[PATCH v7 0/7] FM V4L2 drivers for WL128x

[PATCH v7 0/7] FM V4L2 drivers for WL128x

[manjunatha_halli]

From: Manjunatha Halli <manjunatha_halli@ti.com>

Mauro and the list,

This is the v7 version of the TI WL128x FM V4L2 drivers patchset.
This introduces wl128x folder under the drivers/media/radio which cater
to FM core on Texas Instrument's WL128x (also compatible with WL127x)
WiLink chipsets.
WL128x's FM can work in either Rx or Tx mode, and V4L2 interfaces are
provided for both.

** patch description **

Texas Instrument's WL128x chipset packs BT, FM, GPS and WLAN in a single
die with BT, FM and GPS being interfaced over a single UART.
This driver works on top of the shared transport line discipline driver.
This driver can also be made use for the WL127x version of the chip which packs
BT, FM and WLAN only.

Comments on the last version of the patches have been taken care,
such as,
- Now using the v4l2 control framework to support all the v4l2 controls.
- re-arranged the error handling in IRQ handlers.

Thanks & Regards,
Manjunatha Halli

Manjunatha Halli (7):
  drivers:media:radio: wl128x: fmdrv common header file
  drivers:media:radio: wl128x: fmdrv_v4l2 sources
  drivers:media:radio: wl128x: fmdrv_common sources
  drivers:media:radio: wl128x: FM driver RX sources
  drivers:media:radio: wl128x: FM driver TX sources
  drivers:media:radio: wl128x: Kconfig & Makefile added for wl128x
    driver
  drivers:media:radio: Update Kconfig and Makefile for supporting
    wl128x

 drivers/media/radio/Kconfig               |    3 +
 drivers/media/radio/Makefile              |    1 +
 drivers/media/radio/wl128x/Kconfig        |   17 +
 drivers/media/radio/wl128x/Makefile       |    6 +
 drivers/media/radio/wl128x/fmdrv.h        |  245 ++++
 drivers/media/radio/wl128x/fmdrv_common.c | 1970 +++++++++++++++++++++++++++++
 drivers/media/radio/wl128x/fmdrv_common.h |  402 ++++++
 drivers/media/radio/wl128x/fmdrv_rx.c     |  904 +++++++++++++
 drivers/media/radio/wl128x/fmdrv_rx.h     |   59 +
 drivers/media/radio/wl128x/fmdrv_tx.c     |  438 +++++++
 drivers/media/radio/wl128x/fmdrv_tx.h     |   37 +
 drivers/media/radio/wl128x/fmdrv_v4l2.c   |  588 +++++++++
 drivers/media/radio/wl128x/fmdrv_v4l2.h   |   33 +
 13 files changed, 4703 insertions(+), 0 deletions(-)
 create mode 100644 drivers/media/radio/wl128x/Kconfig
 create mode 100644 drivers/media/radio/wl128x/Makefile
 create mode 100644 drivers/media/radio/wl128x/fmdrv.h
 create mode 100644 drivers/media/radio/wl128x/fmdrv_common.c
 create mode 100644 drivers/media/radio/wl128x/fmdrv_common.h
 create mode 100644 drivers/media/radio/wl128x/fmdrv_rx.c
 create mode 100644 drivers/media/radio/wl128x/fmdrv_rx.h
 create mode 100644 drivers/media/radio/wl128x/fmdrv_tx.c
 create mode 100644 drivers/media/radio/wl128x/fmdrv_tx.h
 create mode 100644 drivers/media/radio/wl128x/fmdrv_v4l2.c
 create mode 100644 drivers/media/radio/wl128x/fmdrv_v4l2.h

[PATCH v7 1/7] drivers:media:radio: wl128x: fmdrv common header file

[manjunatha_halli]

From: Manjunatha Halli <manjunatha_halli@ti.com>

These are common headers used in FM submodules (FM V4L2,
FM common, FM Rx,and FM TX).

Signed-off-by: Manjunatha Halli <manjunatha_halli@ti.com>
---
 drivers/media/radio/wl128x/fmdrv.h |  245 ++++++++++++++++++++++++++++++++++++
 1 files changed, 245 insertions(+), 0 deletions(-)
 create mode 100644 drivers/media/radio/wl128x/fmdrv.h

diff --git a/drivers/media/radio/wl128x/fmdrv.h b/drivers/media/radio/wl128x/fmdrv.h
new file mode 100644
index 0000000..96106b1
--- /dev/null
+++ b/drivers/media/radio/wl128x/fmdrv.h
@@ -0,0 +1,245 @@
+/*
+ *  FM Driver for Connectivity chip of Texas Instruments.
+ *
+ *  Common header for all FM driver sub-modules.
+ *
+ *  Copyright (C) 2009 Texas Instruments
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef _FM_DRV_H
+#define _FM_DRV_H
+
+#include <linux/skbuff.h>
+#include <linux/interrupt.h>
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <linux/timer.h>
+#include <linux/version.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ctrls.h>
+
+#define FM_DRV_VERSION            "0.01"
+/* Should match with FM_DRV_VERSION */
+#define FM_DRV_RADIO_VERSION      KERNEL_VERSION(0, 0, 1)
+#define FM_DRV_NAME               "ti_fmdrv"
+#define FM_DRV_CARD_SHORT_NAME    "TI FM Radio"
+#define FM_DRV_CARD_LONG_NAME     "Texas Instruments FM Radio"
+
+/* Flag info */
+#define FM_INTTASK_RUNNING            0
+#define FM_INTTASK_SCHEDULE_PENDING   1
+#define FM_FIRMWARE_DW_INPROGRESS     2
+#define FM_CORE_READY                 3
+#define FM_CORE_TRANSPORT_READY       4
+#define FM_AF_SWITCH_INPROGRESS	      5
+#define FM_CORE_TX_XMITING	      6
+
+#define FM_TUNE_COMPLETE	      0x1
+#define FM_BAND_LIMIT		      0x2
+
+#define FM_DRV_TX_TIMEOUT      (5*HZ)	/* 5 seconds */
+#define FM_DRV_RX_SEEK_TIMEOUT (20*HZ)	/* 20 seconds */
+
+#define NO_OF_ENTRIES_IN_ARRAY(array) (sizeof(array) / sizeof(array[0]))
+
+enum {
+	FM_MODE_OFF,
+	FM_MODE_TX,
+	FM_MODE_RX,
+	FM_MODE_ENTRY_MAX
+};
+
+#define FM_RX_RDS_INFO_FIELD_MAX	8	/* 4 Group * 2 Bytes */
+
+/*
+ * define private CIDs for V4L2
+ */
+#define V4L2_CID_CHANNEL_SPACING (V4L2_CID_PRIVATE_BASE + 0)
+
+/* RX RDS data format */
+struct fm_rdsdata_format {
+	union {
+		struct {
+			unsigned char rdsbuff[FM_RX_RDS_INFO_FIELD_MAX];
+		} groupdatabuff;
+		struct {
+			unsigned short pidata;
+			unsigned char block_b_byte1;
+			unsigned char block_b_byte2;
+			unsigned char block_c_byte1;
+			unsigned char block_c_byte2;
+			unsigned char block_d_byte1;
+			unsigned char block_d_byte2;
+		} groupgeneral;
+		struct {
+			unsigned short pidata;
+			unsigned char block_b_byte1;
+			unsigned char block_b_byte2;
+			unsigned char firstaf;
+			unsigned char secondaf;
+			unsigned char firstpsbyte;
+			unsigned char secondpsbyte;
+		} group0A;
+
+		struct {
+			unsigned short pidata;
+			unsigned char block_b_byte1;
+			unsigned char block_b_byte2;
+			unsigned short pidata2;
+			unsigned char firstpsbyte;
+			unsigned char secondpsbyte;
+		} group0B;
+	} rdsdata;
+};
+
+/* FM region (Europe/US, Japan) info */
+struct region_info {
+	unsigned int channel_spacing;
+	unsigned int bottom_frequency;
+	unsigned int top_frequency;
+	unsigned char region_index;
+};
+
+typedef void (*int_handler_prototype) (void *);
+
+/* FM Interrupt processing related info */
+struct fm_irq {
+	unsigned char stage_index;
+	unsigned short flag;	/* FM interrupt flag */
+	unsigned short mask;	/* FM interrupt mask */
+	/* Interrupt process timeout handler */
+	struct timer_list int_timeout_timer;
+	unsigned char irq_service_timeout_retry;
+	int_handler_prototype *fm_int_handlers;
+};
+
+/* RDS info */
+struct fm_rds {
+	unsigned char flag;	/* RX RDS on/off status */
+	unsigned char last_block_index;	/* Last received RDS block */
+
+	/* RDS buffer */
+	wait_queue_head_t read_queue;
+	unsigned int buf_size;	/* Size is always multiple of 3 */
+	unsigned int wr_index;
+	unsigned int rd_index;
+	unsigned char *buffer;
+};
+
+#define FM_RDS_MAX_AF_LIST		25
+
+/*
+ * Current RX channel Alternate Frequency cache.
+ * This info is used to switch to other freq (AF)
+ * when current channel signal strengh is below RSSI threshold.
+ */
+struct tuned_station_info {
+	unsigned short picode;
+	unsigned int af_cache[FM_RDS_MAX_AF_LIST];
+	unsigned char no_of_items_in_afcache;
+	unsigned char af_list_max;
+};
+
+/* FM RX mode info */
+struct fm_rx {
+	struct region_info region;	/* Current selected band */
+	unsigned int curr_freq;	/* Current RX frquency */
+	unsigned char curr_mute_mode;	/* Current mute mode */
+	unsigned char curr_deemphasis_mode; /* Current deemphasis mode */
+	/* RF dependent soft mute mode */
+	unsigned char curr_rf_depend_mute;
+	unsigned short curr_volume;	/* Current volume level */
+	short curr_rssi_threshold;	/* Current RSSI threshold level */
+	/* Holds the index of the current AF jump */
+	unsigned char cur_afjump_index;
+	/* Will hold the frequency before the jump */
+	unsigned int freq_before_jump;
+	unsigned char rds_mode;	/* RDS operation mode (RDS/RDBS) */
+	unsigned char af_mode;	/* Alternate frequency on/off */
+	struct tuned_station_info cur_station_info;
+	struct fm_rds rds;
+};
+
+/*
+ * FM TX RDS data
+ *
+ * @ text_type: is the text following PS or RT
+ * @ text: radio text string which could either be PS or RT
+ * @ af_freq: alternate frequency for Tx
+ * TODO: to be declared in application
+ */
+struct tx_rds {
+	unsigned char text_type;
+	unsigned char text[25];
+	unsigned char flag;
+	unsigned int af_freq;
+};
+/*
+ * FM TX global data
+ *
+ * @ pwr_lvl: Power Level of the Transmission from mixer control
+ * @ xmit_state: Transmission state = Updated locally upon Start/Stop
+ * @ audio_io: i2S/Analog
+ * @ tx_frq: Transmission frequency
+ */
+struct fmtx_data {
+	unsigned char pwr_lvl;
+	unsigned char xmit_state;
+	unsigned char audio_io;
+	unsigned char region;
+	unsigned short aud_mode;
+	unsigned int preemph;
+	unsigned long tx_frq;
+	struct tx_rds rds;
+};
+
+/* FM driver operation structure */
+struct fmdrv_ops {
+	struct video_device *radio_dev;	/* V4L2 video device pointer */
+	struct snd_card *card;	/* Card which holds FM mixer controls */
+	unsigned short asci_id;
+	spinlock_t rds_buff_lock; /* To protect access to RDS buffer */
+	spinlock_t resp_skb_lock; /* To protect access to received SKB */
+
+	long flag;		/*  FM driver state machine info */
+	char streg_cbdata; /* status of ST registration */
+
+	struct sk_buff_head rx_q;	/* RX queue */
+	struct tasklet_struct rx_task;	/* RX Tasklet */
+
+	struct sk_buff_head tx_q;	/* TX queue */
+	struct tasklet_struct tx_task;	/* TX Tasklet */
+	unsigned long last_tx_jiffies;	/* Timestamp of last pkt sent */
+	atomic_t tx_cnt;	/* Number of packets can send at a time */
+
+	struct sk_buff *response_skb;	/* Response from the chip */
+	/* Main task completion handler */
+	struct completion maintask_completion;
+	/* Opcode of last command sent to the chip */
+	unsigned char last_sent_pkt_opcode;
+	/* Handler used for wakeup when response packet is received */
+	struct completion *response_completion;
+	struct fm_irq irq_info;
+	unsigned char curr_fmmode; /* Current FM chip mode (TX, RX, OFF) */
+	struct fm_rx rx;	/* FM receiver info */
+	struct fmtx_data tx_data;
+
+	/* V4L2 ctrl framwork handler*/
+	struct v4l2_ctrl_handler ctrl_handler;
+};
+#endif
-- 
1.5.6.3

Re: [PATCH v7 1/7] drivers:media:radio: wl128x: fmdrv common header file

[Francis Galiegue]

manjunatha_halli <at> ti.com> writes:

[...]
> +
> +#define NO_OF_ENTRIES_IN_ARRAY(array) (sizeof(array) / sizeof(array[0]))
> +

Hello,

There is already ARRAY_SIZE() defined in <linux/kernel.h>. And while we're at
it, git grep '#define ARRAY_SIZE' tells that there are 4 definitions in arch:

arch/powerpc/boot/types.h:#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
arch/um/include/shared/user.h:#define ARRAY_SIZE(x) (sizeof(x) /
sizeof((x)[0]))
arch/x86/boot/boot.h:#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x)))
arch/x86/boot/compressed/relocs.c:#define ARRAY_SIZE(x) (sizeof(x) /
sizeof((x)[0]))
include/linux/kernel.h:#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])  
+ __must_be_array(arr))

Does the __must_be_array() cause trouble with arch/? If not, shouldn't these
definitions be merged?

[PATCH v7 2/7] drivers:media:radio: wl128x: fmdrv_v4l2 sources

[manjunatha_halli]

From: Manjunatha Halli <manjunatha_halli@ti.com>

This module interfaces V4L2 subsystem and FM common module.
It registers itself with V4L2 as Radio module.

Signed-off-by: Manjunatha Halli <manjunatha_halli@ti.com>
---
 drivers/media/radio/wl128x/fmdrv_v4l2.c |  588 +++++++++++++++++++++++++++++++
 drivers/media/radio/wl128x/fmdrv_v4l2.h |   33 ++
 2 files changed, 621 insertions(+), 0 deletions(-)
 create mode 100644 drivers/media/radio/wl128x/fmdrv_v4l2.c
 create mode 100644 drivers/media/radio/wl128x/fmdrv_v4l2.h

diff --git a/drivers/media/radio/wl128x/fmdrv_v4l2.c b/drivers/media/radio/wl128x/fmdrv_v4l2.c
new file mode 100644
index 0000000..623102f
--- /dev/null
+++ b/drivers/media/radio/wl128x/fmdrv_v4l2.c
@@ -0,0 +1,588 @@
+/*
+ *  FM Driver for Connectivity chip of Texas Instruments.
+ *  This file provides interfaces to V4L2 subsystem.
+ *
+ *  This module registers with V4L2 subsystem as Radio
+ *  data system interface (/dev/radio). During the registration,
+ *  it will expose two set of function pointers.
+ *
+ *    1) File operation related API (open, close, read, write, poll...etc).
+ *    2) Set of V4L2 IOCTL complaint API.
+ *
+ *  Copyright (C) 2010 Texas Instruments
+ *  Author: Raja Mani <raja_mani@ti.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include "fmdrv.h"
+#include "fmdrv_v4l2.h"
+#include "fmdrv_common.h"
+#include "fmdrv_rx.h"
+#include "fmdrv_tx.h"
+
+static struct video_device *gradio_dev;
+static unsigned char radio_disconnected;
+
+/* -- V4L2 RADIO (/dev/radioX) device file operation interfaces --- */
+
+/* Read RX RDS data */
+static ssize_t fm_v4l2_fops_read(struct file *file, char __user * buf,
+					size_t count, loff_t *ppos)
+{
+	unsigned char rds_mode;
+	int ret;
+	struct fmdrv_ops *fmdev;
+
+	fmdev = video_drvdata(file);
+
+	if (!radio_disconnected) {
+		pr_err("(fmdrv): FM device is already disconnected\n");
+		return -EIO;
+	}
+
+	/* Turn on RDS mode , if it is disabled */
+	ret = fm_rx_get_rds_mode(fmdev, &rds_mode);
+	if (ret < 0) {
+		pr_err("(fmdrv): Unable to read current rds mode\n");
+		return ret;
+	}
+
+	if (rds_mode == FM_RDS_DISABLE) {
+		ret = fmc_set_rds_mode(fmdev, FM_RDS_ENABLE);
+		if (ret < 0) {
+			pr_err("(fmdrv): Failed to enable rds mode\n");
+			return ret;
+		}
+	}
+
+	/* Copy RDS data from internal buffer to user buffer */
+	ret = fmc_transfer_rds_from_internal_buff(fmdev, file, buf, count);
+
+	return ret;
+}
+
+/* Write TX RDS data */
+static ssize_t fm_v4l2_fops_write(struct file *file, const char __user * buf,
+					size_t count, loff_t *ppos)
+{
+	struct tx_rds rds;
+	int ret;
+	struct fmdrv_ops *fmdev;
+
+	ret = copy_from_user(&rds, buf, sizeof(rds));
+	pr_debug("(fmdrv): (%d)type: %d, text %s, af %d\n",
+		   ret, rds.text_type, rds.text, rds.af_freq);
+
+	fmdev = video_drvdata(file);
+	fm_tx_set_radio_text(fmdev, rds.text, rds.text_type);
+	fm_tx_set_af(fmdev, rds.af_freq);
+
+	return 0;
+}
+
+static unsigned int fm_v4l2_fops_poll(struct file *file,
+				      struct poll_table_struct *pts)
+{
+	int ret;
+	struct fmdrv_ops *fmdev;
+
+	fmdev = video_drvdata(file);
+	ret = fmc_is_rds_data_available(fmdev, file, pts);
+	if (ret < 0)
+		return POLLIN | POLLRDNORM;
+
+	return 0;
+}
+
+/*
+ * Handle open request for "/dev/radioX" device.
+ * Start with FM RX mode as default.
+ */
+static int fm_v4l2_fops_open(struct file *file)
+{
+	int ret;
+	struct fmdrv_ops *fmdev = NULL;
+
+	/* Don't allow multiple open */
+	if (radio_disconnected) {
+		pr_err("(fmdrv): FM device is already opened\n");
+		return -EBUSY;
+	}
+
+	fmdev = video_drvdata(file);
+
+	ret = fmc_prepare(fmdev);
+	if (ret < 0) {
+		pr_err("(fmdrv): Unable to prepare FM CORE\n");
+		return ret;
+	}
+
+	pr_debug("(fmdrv): Load FM RX firmware..\n");
+
+	ret = fmc_set_mode(fmdev, FM_MODE_RX);
+	if (ret < 0) {
+		pr_err("(fmdrv): Unable to load FM RX firmware\n");
+		return ret;
+	}
+	radio_disconnected = 1;
+
+	return ret;
+}
+
+static int fm_v4l2_fops_release(struct file *file)
+{
+	int ret = 0;
+	struct fmdrv_ops *fmdev;
+
+	fmdev = video_drvdata(file);
+	if (!radio_disconnected) {
+		pr_debug("(fmdrv): FM device is already closed\n");
+		return ret;
+	}
+
+	ret = fmc_set_mode(fmdev, FM_MODE_OFF);
+	if (ret < 0) {
+		pr_err("(fmdrv): Unable to turn off the chip\n");
+		return ret;
+	}
+
+	ret = fmc_release(fmdev);
+	if (ret < 0) {
+		pr_err("(fmdrv): FM CORE release failed\n");
+		return ret;
+	}
+	radio_disconnected = 0;
+
+	return ret;
+}
+
+/* V4L2 RADIO (/dev/radioX) device IOCTL interfaces */
+static int fm_v4l2_vidioc_querycap(struct file *file, void *priv,
+		struct v4l2_capability *capability)
+{
+	strlcpy(capability->driver, FM_DRV_NAME, sizeof(capability->driver));
+	strlcpy(capability->card, FM_DRV_CARD_SHORT_NAME,
+			sizeof(capability->card));
+	sprintf(capability->bus_info, "UART");
+	capability->version = FM_DRV_RADIO_VERSION;
+	capability->capabilities = V4L2_CAP_HW_FREQ_SEEK | V4L2_CAP_TUNER |
+		V4L2_CAP_RADIO | V4L2_CAP_MODULATOR |
+		V4L2_CAP_AUDIO | V4L2_CAP_READWRITE |
+		V4L2_CAP_RDS_CAPTURE;
+
+	return 0;
+}
+
+static int fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct fmdrv_ops *fmdev = container_of(ctrl->handler,
+			struct fmdrv_ops, ctrl_handler);
+
+	switch (ctrl->id) {
+	case  V4L2_CID_TUNE_ANTENNA_CAPACITOR:
+		ctrl->val = fm_tx_get_tune_cap_val(fmdev);
+		break;
+	default:
+		pr_warn("(fmdev): %s: Unknown IOCTL: %d\n",
+				__func__, ctrl->id);
+		break;
+	}
+
+	return 0;
+}
+
+static int fm_v4l2_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct fmdrv_ops *fmdev = container_of(ctrl->handler,
+			struct fmdrv_ops, ctrl_handler);
+	int ret = -EINVAL;
+
+	switch (ctrl->id) {
+	case V4L2_CID_AUDIO_VOLUME:	/* set volume */
+		ret = fm_rx_set_volume(fmdev,
+				(unsigned short)ctrl->val);
+		break;
+	case V4L2_CID_AUDIO_MUTE:	/* set mute */
+		ret = fmc_set_mute_mode(fmdev,
+				(unsigned char)ctrl->val);
+		break;
+	case V4L2_CID_TUNE_POWER_LEVEL:
+		/* set TX power level - ext control */
+		ret = fm_tx_set_pwr_lvl(fmdev,
+				(unsigned char)ctrl->val);
+		break;
+	case V4L2_CID_TUNE_PREEMPHASIS:
+		ret = fm_tx_set_preemph_filter(fmdev,
+				(unsigned char) ctrl->val);
+		break;
+	}
+	return ret;
+}
+
+static int fm_v4l2_vidioc_g_audio(struct file *file, void *priv,
+					struct v4l2_audio *audio)
+{
+	memset(audio, 0, sizeof(*audio));
+	audio->index = 0;
+	strcpy(audio->name, "Radio");
+	audio->capability = V4L2_AUDCAP_STEREO;
+
+	return 0;
+}
+
+static int fm_v4l2_vidioc_s_audio(struct file *file, void *priv,
+					struct v4l2_audio *audio)
+{
+	if (audio->index != 0)
+		return -EINVAL;
+
+	return 0;
+}
+
+/* Get tuner attributes. If current mode is NOT RX, return error */
+static int fm_v4l2_vidioc_g_tuner(struct file *file, void *priv,
+					struct v4l2_tuner *tuner)
+{
+	struct fmdrv_ops *fmdev = video_drvdata(file);
+	unsigned int bottom_frequency;
+	unsigned int top_frequency;
+	unsigned short stereo_mono_mode;
+	unsigned short rssilvl;
+	int ret = -EINVAL;
+
+	if (tuner->index != 0)
+		return ret;
+
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	ret = fm_rx_get_currband_freq_range(fmdev, &bottom_frequency,
+						 &top_frequency);
+	if (ret != 0)
+		return ret;
+
+	ret = fm_rx_get_stereo_mono(fmdev, &stereo_mono_mode);
+	if (ret != 0)
+		return ret;
+
+	ret = fm_rx_get_rssi_level(fmdev, &rssilvl);
+	if (ret != 0)
+		return ret;
+
+	strcpy(tuner->name, "FM");
+	tuner->type = V4L2_TUNER_RADIO;
+	/* Store rangelow and rangehigh freq in unit of 62.5 Hz */
+	tuner->rangelow = bottom_frequency * 16;
+	tuner->rangehigh = top_frequency * 16;
+	tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO |
+	((fmdev->rx.rds.flag == FM_RDS_ENABLE) ? V4L2_TUNER_SUB_RDS : 0);
+	tuner->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS |
+			    V4L2_TUNER_CAP_LOW;
+	tuner->audmode = (stereo_mono_mode ?
+			  V4L2_TUNER_MODE_MONO : V4L2_TUNER_MODE_STEREO);
+
+	/*
+	 * Actual rssi value lies in between -128 to +127.
+	 * Convert this range from 0 to 255 by adding +128
+	 */
+	rssilvl += 128;
+
+	/*
+	 * Return signal strength value should be within 0 to 65535.
+	 * Find out correct signal radio by multiplying (65535/255) = 257
+	 */
+	tuner->signal = rssilvl * 257;
+	tuner->afc = 0;
+
+	return ret;
+}
+
+/*
+ * Set tuner attributes. If current mode is NOT RX, set to RX.
+ * Currently, we set only audio mode (mono/stereo) and RDS state (on/off).
+ * Should we set other tuner attributes, too?
+ */
+static int fm_v4l2_vidioc_s_tuner(struct file *file, void *priv,
+					struct v4l2_tuner *tuner)
+{
+	struct fmdrv_ops *fmdev = video_drvdata(file);
+	unsigned short aud_mode;
+	unsigned char rds_mode;
+	int ret = -EINVAL;
+
+	if (tuner->index != 0)
+		return ret;
+
+	aud_mode = (tuner->audmode == V4L2_TUNER_MODE_STEREO) ?
+			FM_STEREO_MODE : FM_MONO_MODE;
+	rds_mode = (tuner->rxsubchans & V4L2_TUNER_SUB_RDS) ?
+			FM_RDS_ENABLE : FM_RDS_DISABLE;
+
+	if (fmdev->curr_fmmode != FM_MODE_RX) {
+		ret = fmc_set_mode(fmdev, FM_MODE_RX);
+		if (ret < 0) {
+			pr_err("(fmdrv): Failed to set RX mode; unable to "
+					"write tuner attributes\n");
+			return ret;
+		}
+	}
+
+	ret = fmc_set_stereo_mono(fmdev, aud_mode);
+	if (ret < 0) {
+		pr_err("(fmdrv): Failed to set RX stereo/mono mode\n");
+		return ret;
+	}
+
+	ret = fmc_set_rds_mode(fmdev, rds_mode);
+	if (ret < 0)
+		pr_err("(fmdrv): Failed to set RX RDS mode\n");
+
+	return ret;
+}
+
+/* Get tuner or modulator radio frequency */
+static int fm_v4l2_vidioc_g_frequency(struct file *file, void *priv,
+					struct v4l2_frequency *freq)
+{
+	int ret;
+	struct fmdrv_ops *fmdev = video_drvdata(file);
+
+	ret = fmc_get_frequency(fmdev, &freq->frequency);
+	if (ret < 0) {
+		pr_err("(fmdrv): Failed to get frequency\n");
+		return ret;
+	}
+
+	/* Frequency unit of 62.5 Hz*/
+	freq->frequency = (unsigned int) freq->frequency * 16;
+
+	return 0;
+}
+
+/* Set tuner or modulator radio frequency */
+static int fm_v4l2_vidioc_s_frequency(struct file *file, void *priv,
+					struct v4l2_frequency *freq)
+{
+	struct fmdrv_ops *fmdev = video_drvdata(file);
+	int ret;
+
+	/*
+	 * As V4L2_TUNER_CAP_LOW is set 1 user sends the frequency
+	 * in units of 62.5 Hz.
+	 */
+	freq->frequency = (unsigned int)(freq->frequency / 16);
+
+	ret = fmc_set_frequency(fmdev, freq->frequency);
+
+	return ret;
+}
+
+/* Set hardware frequency seek. If current mode is NOT RX, set it RX. */
+static int fm_v4l2_vidioc_s_hw_freq_seek(struct file *file, void *priv,
+					struct v4l2_hw_freq_seek *seek)
+{
+	struct fmdrv_ops *fmdev = video_drvdata(file);
+	int ret;
+
+	if (fmdev->curr_fmmode != FM_MODE_RX) {
+		ret = fmc_set_mode(fmdev, FM_MODE_RX);
+		if (ret != 0) {
+			pr_err("(fmdrv): Failed to set RX mode; unable to "
+					"start HW frequency seek\n");
+			return ret;
+		}
+	}
+
+	ret = fm_rx_seek(fmdev, seek->seek_upward, seek->wrap_around,
+			seek->spacing);
+	if (ret < 0)
+		pr_err("(fmdrv): RX seek failed - %d\n", ret);
+
+	return ret;
+}
+/* Get modulator attributes. If mode is not TX, return no attributes. */
+static int fm_v4l2_vidioc_g_modulator(struct file *file, void *priv,
+					struct v4l2_modulator *mod)
+{
+	struct fmdrv_ops *fmdev = video_drvdata(file);;
+
+	if (mod->index != 0)
+		return -EINVAL;
+
+	if (fmdev->curr_fmmode != FM_MODE_TX)
+		return -EPERM;
+
+	mod->txsubchans = ((fmdev->tx_data.aud_mode == FM_STEREO_MODE) ?
+	V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO) |
+	((fmdev->tx_data.rds.flag == FM_RDS_ENABLE) ? V4L2_TUNER_SUB_RDS : 0);
+
+	mod->capability = V4L2_TUNER_CAP_STEREO |
+		V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_LOW;
+
+	return 0;
+}
+
+/* Set modulator attributes. If mode is not TX, set to TX. */
+static int fm_v4l2_vidioc_s_modulator(struct file *file, void *priv,
+					struct v4l2_modulator *mod)
+{
+	struct fmdrv_ops *fmdev = video_drvdata(file);
+	unsigned char rds_mode;
+	unsigned short aud_mode;
+	int ret;
+
+	if (mod->index != 0)
+		return -EINVAL;
+
+	if (fmdev->curr_fmmode != FM_MODE_TX) {
+		ret = fmc_set_mode(fmdev, FM_MODE_TX);
+		if (ret != 0) {
+			pr_err("(fmdrv): Failed to set TX mode; unable to "
+					"set modulator attributes\n");
+			return ret;
+		}
+	}
+
+	aud_mode = (mod->txsubchans & V4L2_TUNER_SUB_STEREO) ?
+			FM_STEREO_MODE : FM_MONO_MODE;
+	rds_mode = (mod->txsubchans & V4L2_TUNER_SUB_RDS) ?
+			FM_RDS_ENABLE : FM_RDS_DISABLE;
+	ret = fm_tx_set_stereo_mono(fmdev, aud_mode);
+	if (ret < 0) {
+		pr_err("(fmdrv): Failed to set mono/stereo mode for TX\n");
+		return ret;
+	}
+	ret = fm_tx_set_rds_mode(fmdev, rds_mode);
+	if (ret < 0)
+		pr_err("(fmdrv): Failed to set rds mode for TX\n");
+
+	return ret;
+}
+
+static const struct v4l2_file_operations fm_drv_fops = {
+	.owner = THIS_MODULE,
+	.read = fm_v4l2_fops_read,
+	.write = fm_v4l2_fops_write,
+	.poll = fm_v4l2_fops_poll,
+	.ioctl = video_ioctl2,
+	.open = fm_v4l2_fops_open,
+	.release = fm_v4l2_fops_release,
+};
+
+static const struct v4l2_ctrl_ops fm_ctrl_ops = {
+	.s_ctrl = fm_v4l2_s_ctrl,
+	.g_volatile_ctrl = fm_g_volatile_ctrl,
+};
+static const struct v4l2_ioctl_ops fm_drv_ioctl_ops = {
+	.vidioc_querycap = fm_v4l2_vidioc_querycap,
+	.vidioc_g_audio = fm_v4l2_vidioc_g_audio,
+	.vidioc_s_audio = fm_v4l2_vidioc_s_audio,
+	.vidioc_g_tuner = fm_v4l2_vidioc_g_tuner,
+	.vidioc_s_tuner = fm_v4l2_vidioc_s_tuner,
+	.vidioc_g_frequency = fm_v4l2_vidioc_g_frequency,
+	.vidioc_s_frequency = fm_v4l2_vidioc_s_frequency,
+	.vidioc_s_hw_freq_seek = fm_v4l2_vidioc_s_hw_freq_seek,
+	.vidioc_g_modulator = fm_v4l2_vidioc_g_modulator,
+	.vidioc_s_modulator = fm_v4l2_vidioc_s_modulator
+};
+
+/* V4L2 RADIO device parent structure */
+static struct video_device fm_viddev_template = {
+	.fops = &fm_drv_fops,
+	.ioctl_ops = &fm_drv_ioctl_ops,
+	.name = FM_DRV_NAME,
+	.release = video_device_release,
+};
+
+int fm_v4l2_init_video_device(struct fmdrv_ops *fmdev, int radio_nr)
+{
+	struct v4l2_ctrl *ctrl;
+	int ret;
+
+	/* Allocate new video device */
+	gradio_dev = video_device_alloc();
+	if (NULL == gradio_dev) {
+		pr_err("(fmdrv): Can't allocate video device\n");
+		return -ENOMEM;
+	}
+
+	/* Setup FM driver's V4L2 properties */
+	memcpy(gradio_dev, &fm_viddev_template, sizeof(fm_viddev_template));
+
+	video_set_drvdata(gradio_dev, fmdev);
+
+	/* Register with V4L2 subsystem as RADIO device */
+	if (video_register_device(gradio_dev, VFL_TYPE_RADIO, radio_nr)) {
+		video_device_release(gradio_dev);
+		pr_err("(fmdrv): Could not register video device\n");
+		return -ENOMEM;
+	}
+
+	fmdev->radio_dev = gradio_dev;
+
+	/* Register to v4l2 ctrl handler framework */
+	fmdev->radio_dev->ctrl_handler = &fmdev->ctrl_handler;
+
+	ret = v4l2_ctrl_handler_init(&fmdev->ctrl_handler, 5);
+	if (ret < 0) {
+		pr_err("(fmdev): Can't init ctrl handler\n");
+		v4l2_ctrl_handler_free(&fmdev->ctrl_handler);
+		return -EBUSY;
+	}
+
+	/* Following controls are handled by V4L2 control framework.
+	 * Add in ascending ID order.
+	 * */
+	v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops,
+			V4L2_CID_AUDIO_VOLUME, FM_RX_VOLUME_MIN,
+			FM_RX_VOLUME_MAX, 1, FM_RX_VOLUME_MAX);
+
+	v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops,
+			V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
+
+	v4l2_ctrl_new_std_menu(&fmdev->ctrl_handler, &fm_ctrl_ops,
+			V4L2_CID_TUNE_PREEMPHASIS, V4L2_PREEMPHASIS_75_uS,
+			0, V4L2_PREEMPHASIS_75_uS);
+
+	v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops,
+			V4L2_CID_TUNE_POWER_LEVEL, FM_PWR_LVL_LOW,
+			FM_PWR_LVL_HIGH, 1, FM_PWR_LVL_HIGH);
+
+	ctrl = v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops,
+			V4L2_CID_TUNE_ANTENNA_CAPACITOR, 0,
+			255, 1, 255);
+
+	if (ctrl)
+		ctrl->is_volatile = 1;
+
+	return 0;
+}
+
+void *fm_v4l2_deinit_video_device(void)
+{
+	struct fmdrv_ops *fmdev;
+
+
+	fmdev = video_get_drvdata(gradio_dev);
+
+	/* Unregister to v4l2 ctrl handler framework*/
+	v4l2_ctrl_handler_free(&fmdev->ctrl_handler);
+
+	/* Unregister RADIO device from V4L2 subsystem */
+	video_unregister_device(gradio_dev);
+
+	return fmdev;
+}
diff --git a/drivers/media/radio/wl128x/fmdrv_v4l2.h b/drivers/media/radio/wl128x/fmdrv_v4l2.h
new file mode 100644
index 0000000..485cb93
--- /dev/null
+++ b/drivers/media/radio/wl128x/fmdrv_v4l2.h
@@ -0,0 +1,33 @@
+/*
+ *  FM Driver for Connectivity chip of Texas Instruments.
+ *
+ *  FM V4L2 module header.
+ *
+ *  Copyright (C) 2010 Texas Instruments
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef _FMDRV_V4L2_H
+#define _FMDRV_V4L2_H
+
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ctrls.h>
+
+int fm_v4l2_init_video_device(struct fmdrv_ops *, int);
+void *fm_v4l2_deinit_video_device(void);
+
+#endif
-- 
1.5.6.3

[PATCH v7 3/7] drivers:media:radio: wl128x: fmdrv_common sources

[manjunatha_halli]

From: Manjunatha Halli <manjunatha_halli@ti.com>

These are the sources for the common interfaces required by the
FM V4L2 driver for TI WL127x and WL128x chips.

These implement the FM channel-8 protocol communication with the
chip. This makes use of the Shared Transport as its transport.

Signed-off-by: Manjunatha Halli <manjunatha_halli@ti.com>
---
 drivers/media/radio/wl128x/fmdrv_common.c | 1970 +++++++++++++++++++++++++++++
 drivers/media/radio/wl128x/fmdrv_common.h |  402 ++++++
 2 files changed, 2372 insertions(+), 0 deletions(-)
 create mode 100644 drivers/media/radio/wl128x/fmdrv_common.c
 create mode 100644 drivers/media/radio/wl128x/fmdrv_common.h

diff --git a/drivers/media/radio/wl128x/fmdrv_common.c b/drivers/media/radio/wl128x/fmdrv_common.c
new file mode 100644
index 0000000..874dbd8
--- /dev/null
+++ b/drivers/media/radio/wl128x/fmdrv_common.c
@@ -0,0 +1,1970 @@
+/*
+ *  FM Driver for Connectivity chip of Texas Instruments.
+ *
+ *  This sub-module of FM driver is common for FM RX and TX
+ *  functionality. This module is responsible for:
+ *  1) Forming group of Channel-8 commands to perform particular
+ *     functionality (eg., frequency set require more than
+ *     one Channel-8 command to be sent to the chip).
+ *  2) Sending each Channel-8 command to the chip and reading
+ *     response back over Shared Transport.
+ *  3) Managing TX and RX Queues and Tasklets.
+ *  4) Handling FM Interrupt packet and taking appropriate action.
+ *  5) Loading FM firmware to the chip (common, FM TX, and FM RX
+ *     firmware files based on mode selection)
+ *
+ *  Copyright (C) 2010 Texas Instruments
+ *  Author: Raja Mani <raja_mani@ti.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/firmware.h>
+#include <linux/delay.h>
+#include "fmdrv.h"
+#include "fmdrv_v4l2.h"
+#include "fmdrv_common.h"
+#include <linux/ti_wilink_st.h>
+#include "fmdrv_rx.h"
+#include "fmdrv_tx.h"
+
+/* Region info */
+static struct region_info region_configs[] = {
+	/* Europe/US */
+	{
+	 .channel_spacing = FM_CHANNEL_SPACING_200KHZ * FM_FREQ_MUL,
+	 .bottom_frequency = 87500,	/* 87.5 MHz */
+	 .top_frequency = 108000,	/* 108 MHz */
+	 .region_index = 0,
+	 },
+	/* Japan */
+	{
+	 .channel_spacing = FM_CHANNEL_SPACING_200KHZ * FM_FREQ_MUL,
+	 .bottom_frequency = 76000,	/* 76 MHz */
+	 .top_frequency = 90000,	/* 90 MHz */
+	 .region_index = 1,
+	 },
+};
+
+/* Band selection */
+static unsigned char default_radio_region;	/* Europe/US */
+module_param(default_radio_region, byte, 0);
+MODULE_PARM_DESC(default_radio_region, "Region: 0=Europe/US, 1=Japan");
+
+/* RDS buffer blocks */
+static unsigned int default_rds_buf = 300;
+module_param(default_rds_buf, uint, 0444);
+MODULE_PARM_DESC(rds_buf, "RDS buffer entries");
+
+/* Radio Nr */
+static int radio_nr = -1;
+module_param(radio_nr, int, 0444);
+MODULE_PARM_DESC(radio_nr, "Radio Nr");
+
+/* FM irq handlers forward declaration */
+static void fm_irq_send_flag_getcmd(void *);
+static void fm_irq_handle_flag_getcmd_resp(void *);
+static void fm_irq_handle_hw_malfunction(void *);
+static void fm_irq_handle_rds_start(void *);
+static void fm_irq_send_rdsdata_getcmd(void *);
+static void fm_irq_handle_rdsdata_getcmd_resp(void *);
+static void fm_irq_handle_rds_finish(void *);
+static void fm_irq_handle_tune_op_ended(void *);
+static void fm_irq_handle_power_enb(void *);
+static void fm_irq_handle_low_rssi_start(void *);
+static void fm_irq_afjump_set_pi(void *);
+static void fm_irq_handle_set_pi_resp(void *);
+static void fm_irq_afjump_set_pimask(void *);
+static void fm_irq_handle_set_pimask_resp(void *);
+static void fm_irq_afjump_setfreq(void *);
+static void fm_irq_handle_setfreq_resp(void *);
+static void fm_irq_afjump_enableint(void *);
+static void fm_irq_afjump_enableint_resp(void *);
+static void fm_irq_start_afjump(void *);
+static void fm_irq_handle_start_afjump_resp(void *);
+static void fm_irq_afjump_rd_freq(void *);
+static void fm_irq_afjump_rd_freq_resp(void *);
+static void fm_irq_handle_low_rssi_finish(void *);
+static void fm_irq_send_intmsk_cmd(void *);
+static void fm_irq_handle_intmsk_cmd_resp(void *);
+
+/*
+ * When FM common module receives interrupt packet, following handlers
+ * will be executed one after another to service the interrupt(s)
+ */
+enum fmc_irq_handler_index {
+	FM_SEND_FLAG_GETCMD_INDEX,
+	FM_HANDLE_FLAG_GETCMD_RESP_INDEX,
+
+	/* HW malfunction irq handler */
+	FM_HW_MAL_FUNC_INDEX,
+
+	/* RDS threshold reached irq handler */
+	FM_RDS_START_INDEX,
+	FM_RDS_SEND_RDS_GETCMD_INDEX,
+	FM_RDS_HANDLE_RDS_GETCMD_RESP_INDEX,
+	FM_RDS_FINISH_INDEX,
+
+	/* Tune operation ended irq handler */
+	FM_HW_TUNE_OP_ENDED_INDEX,
+
+	/* TX power enable irq handler */
+	FM_HW_POWER_ENB_INDEX,
+
+	/* Low RSSI irq handler */
+	FM_LOW_RSSI_START_INDEX,
+	FM_AF_JUMP_SETPI_INDEX,
+	FM_AF_JUMP_HANDLE_SETPI_RESP_INDEX,
+	FM_AF_JUMP_SETPI_MASK_INDEX,
+	FM_AF_JUMP_HANDLE_SETPI_MASK_RESP_INDEX,
+	FM_AF_JUMP_SET_AF_FREQ_INDEX,
+	FM_AF_JUMP_HENDLE_SET_AFFREQ_RESP_INDEX,
+	FM_AF_JUMP_ENABLE_INT_INDEX,
+	FM_AF_JUMP_ENABLE_INT_RESP_INDEX,
+	FM_AF_JUMP_START_AFJUMP_INDEX,
+	FM_AF_JUMP_HANDLE_START_AFJUMP_RESP_INDEX,
+	FM_AF_JUMP_RD_FREQ_INDEX,
+	FM_AF_JUMP_RD_FREQ_RESP_INDEX,
+	FM_LOW_RSSI_FINISH_INDEX,
+
+	/* Interrupt process post action */
+	FM_SEND_INTMSK_CMD_INDEX,
+	FM_HANDLE_INTMSK_CMD_RESP_INDEX,
+};
+
+/* FM interrupt handler table */
+static int_handler_prototype g_IntHandlerTable[] = {
+	fm_irq_send_flag_getcmd,
+	fm_irq_handle_flag_getcmd_resp,
+	fm_irq_handle_hw_malfunction,
+	fm_irq_handle_rds_start, /* RDS threshold reached irq handler */
+	fm_irq_send_rdsdata_getcmd,
+	fm_irq_handle_rdsdata_getcmd_resp,
+	fm_irq_handle_rds_finish,
+	fm_irq_handle_tune_op_ended,
+	fm_irq_handle_power_enb, /* TX power enable irq handler */
+	fm_irq_handle_low_rssi_start,
+	fm_irq_afjump_set_pi,
+	fm_irq_handle_set_pi_resp,
+	fm_irq_afjump_set_pimask,
+	fm_irq_handle_set_pimask_resp,
+	fm_irq_afjump_setfreq,
+	fm_irq_handle_setfreq_resp,
+	fm_irq_afjump_enableint,
+	fm_irq_afjump_enableint_resp,
+	fm_irq_start_afjump,
+	fm_irq_handle_start_afjump_resp,
+	fm_irq_afjump_rd_freq,
+	fm_irq_afjump_rd_freq_resp,
+	fm_irq_handle_low_rssi_finish,
+	fm_irq_send_intmsk_cmd, /* Interrupt process post action */
+	fm_irq_handle_intmsk_cmd_resp
+};
+
+long (*g_st_write) (struct sk_buff *skb);
+static struct completion wait_for_fmdrv_reg_comp;
+
+#ifdef FM_DUMP_TXRX_PKT
+ /* To dump outgoing FM Channel-8 packets */
+inline void dump_tx_skb_data(struct sk_buff *skb)
+{
+	int len, len_org;
+	char index;
+	struct fm_cmd_msg_hdr *cmd_hdr;
+
+	cmd_hdr = (struct fm_cmd_msg_hdr *)skb->data;
+	printk(KERN_INFO "<<%shdr:%02x len:%02x opcode:%02x type:%s dlen:%02x",
+	       fm_cb(skb)->completion ? " " : "*", cmd_hdr->header,
+	       cmd_hdr->len, cmd_hdr->fm_opcode,
+	       cmd_hdr->rd_wr ? "RD" : "WR", cmd_hdr->dlen);
+
+	len_org = skb->len - FM_CMD_MSG_HDR_SIZE;
+	if (len_org > 0) {
+		printk("\n   data(%d): ", cmd_hdr->dlen);
+		len = min(len_org, 14);
+		for (index = 0; index < len; index++)
+			printk("%x ",
+			       skb->data[FM_CMD_MSG_HDR_SIZE + index]);
+		printk("%s", (len_org > 14) ? ".." : "");
+	}
+	printk("\n");
+}
+
+ /* To dump incoming FM Channel-8 packets */
+inline void dump_rx_skb_data(struct sk_buff *skb)
+{
+	int len, len_org;
+	char index;
+	struct fm_event_msg_hdr *evt_hdr;
+
+	evt_hdr = (struct fm_event_msg_hdr *)skb->data;
+	printk(KERN_INFO ">> hdr:%02x len:%02x sts:%02x numhci:%02x "
+	    "opcode:%02x type:%s dlen:%02x", evt_hdr->header, evt_hdr->len,
+	    evt_hdr->status, evt_hdr->num_fm_hci_cmds, evt_hdr->fm_opcode,
+	    (evt_hdr->rd_wr) ? "RD" : "WR", evt_hdr->dlen);
+
+	len_org = skb->len - FM_EVT_MSG_HDR_SIZE;
+	if (len_org > 0) {
+		printk("\n   data(%d): ", evt_hdr->dlen);
+		len = min(len_org, 14);
+		for (index = 0; index < len; index++)
+			printk("%x ",
+			       skb->data[FM_EVT_MSG_HDR_SIZE + index]);
+		printk("%s", (len_org > 14) ? ".." : "");
+	}
+	printk("\n");
+}
+#endif
+
+void fmc_update_region_info(struct fmdrv_ops *fmdev,
+				unsigned char region_to_set)
+{
+	memcpy(&fmdev->rx.region, &region_configs[region_to_set],
+		sizeof(struct region_info));
+}
+
+/*
+ * FM common sub-module will schedule this tasklet whenever it receives
+ * FM packet from ST driver.
+ */
+static void __recv_tasklet(unsigned long arg)
+{
+	struct fmdrv_ops *fmdev;
+	struct fm_event_msg_hdr *fm_evt_hdr;
+	struct sk_buff *skb;
+	unsigned char num_fm_hci_cmds;
+	unsigned long flags;
+
+	fmdev = (struct fmdrv_ops *)arg;
+	/* Process all packets in the RX queue */
+	while ((skb = skb_dequeue(&fmdev->rx_q))) {
+		if (skb->len < sizeof(struct fm_event_msg_hdr)) {
+			pr_err("(fmdrv): skb(%p) has only %d bytes"
+				"atleast need %d bytes to decode\n",
+				skb, skb->len,
+				sizeof(struct fm_event_msg_hdr));
+			kfree_skb(skb);
+			continue;
+		}
+
+		fm_evt_hdr = (void *)skb->data;
+		num_fm_hci_cmds = fm_evt_hdr->num_fm_hci_cmds;
+
+		/* FM interrupt packet? */
+		if (fm_evt_hdr->fm_opcode == FM_INTERRUPT) {
+			/* FM interrupt handler started already? */
+			if (!test_bit(FM_INTTASK_RUNNING, &fmdev->flag)) {
+				set_bit(FM_INTTASK_RUNNING, &fmdev->flag);
+				if (fmdev->irq_info.stage_index != 0) {
+					pr_err("(fmdrv): Invalid stage index,"
+						"resetting to zero\n");
+					fmdev->irq_info.stage_index = 0;
+				}
+
+				/*
+				 * Execute first function in interrupt handler
+				 * table.
+				 */
+				fmdev->irq_info.fm_int_handlers
+					[fmdev->irq_info.stage_index](fmdev);
+			} else {
+				set_bit(FM_INTTASK_SCHEDULE_PENDING,
+				&fmdev->flag);
+			}
+			kfree_skb(skb);
+		}
+		/* Anyone waiting for this with completion handler? */
+		else if (fm_evt_hdr->fm_opcode == fmdev->last_sent_pkt_opcode &&
+			fmdev->response_completion != NULL) {
+			if (fmdev->response_skb != NULL)
+				pr_err("(fmdrv): Response SKB ptr not NULL\n");
+
+			spin_lock_irqsave(&fmdev->resp_skb_lock, flags);
+			fmdev->response_skb = skb;
+			spin_unlock_irqrestore(&fmdev->resp_skb_lock, flags);
+			complete(fmdev->response_completion);
+
+			fmdev->response_completion = NULL;
+			atomic_set(&fmdev->tx_cnt, 1);
+		}
+		/* Is this for interrupt handler? */
+		else if (fm_evt_hdr->fm_opcode == fmdev->last_sent_pkt_opcode &&
+			fmdev->response_completion == NULL) {
+			if (fmdev->response_skb != NULL)
+				pr_err("(fmdrv): Response SKB ptr not NULL\n");
+
+			spin_lock_irqsave(&fmdev->resp_skb_lock, flags);
+			fmdev->response_skb = skb;
+			spin_unlock_irqrestore(&fmdev->resp_skb_lock, flags);
+
+			/* Execute interrupt handler where state index points */
+			fmdev->irq_info.fm_int_handlers
+				[fmdev->irq_info.stage_index](fmdev);
+
+			kfree_skb(skb);
+			atomic_set(&fmdev->tx_cnt, 1);
+		} else {
+			pr_err("(fmdrv): Nobody claimed SKB(%p),purging\n",
+				skb);
+		}
+
+		/*
+		 * Check flow control field. If Num_FM_HCI_Commands field is
+		 * not zero, schedule FM TX tasklet.
+		 */
+		if (num_fm_hci_cmds && atomic_read(&fmdev->tx_cnt))
+			if (!skb_queue_empty(&fmdev->tx_q))
+				tasklet_schedule(&fmdev->tx_task);
+	}
+}
+
+/* FM send tasklet: is scheduled when FM packet has to be sent to chip */
+static void __send_tasklet(unsigned long arg)
+{
+	struct fmdrv_ops *fmdev;
+	struct sk_buff *skb;
+	int len;
+
+	fmdev = (struct fmdrv_ops *)arg;
+	/* Check, is there any timeout happenned to last transmitted packet */
+	if (!atomic_read(&fmdev->tx_cnt) &&
+		((jiffies - fmdev->last_tx_jiffies) > FM_DRV_TX_TIMEOUT)) {
+		pr_err("(fmdrv): TX timeout occurred\n");
+		atomic_set(&fmdev->tx_cnt, 1);
+	}
+	/* Send queued FM TX packets */
+	if (atomic_read(&fmdev->tx_cnt)) {
+		skb = skb_dequeue(&fmdev->tx_q);
+		if (skb) {
+			atomic_dec(&fmdev->tx_cnt);
+			fmdev->last_sent_pkt_opcode = fm_cb(skb)->fm_opcode;
+
+			if (fmdev->response_completion != NULL)
+				pr_err("(fmdrv): Response completion handler"
+						"is not NULL\n");
+
+			fmdev->response_completion = fm_cb(skb)->completion;
+
+			/* Write FM packet to ST driver */
+			len = g_st_write(skb);
+			if (len < 0) {
+				kfree_skb(skb);
+				fmdev->response_completion = NULL;
+				pr_err("(fmdrv): TX tasklet failed to send"
+					"skb(%p)\n", skb);
+				atomic_set(&fmdev->tx_cnt, 1);
+			} else {
+				fmdev->last_tx_jiffies = jiffies;
+			}
+		}
+	}
+}
+
+/*
+ * Queues FM Channel-8 packet to FM TX queue and schedules FM TX tasklet for
+ * transmission
+ */
+static int __fm_send_cmd(struct fmdrv_ops *fmdev, unsigned char fm_opcode,
+				unsigned short int type, void *payload,
+				int payload_len,
+				struct completion *wait_completion)
+{
+	struct sk_buff *skb;
+	struct fm_cmd_msg_hdr *cmd_hdr;
+	int size;
+
+
+	if (fm_opcode >= FM_INTERRUPT) {
+		pr_err("(fmdrv): Invalid fm register index\n");
+		return -EINVAL;
+	}
+	if (test_bit(FM_FIRMWARE_DW_INPROGRESS, &fmdev->flag) &&
+			payload == NULL) {
+		pr_err("(fmdrv): Payload data is NULL during fw download\n");
+		return -EINVAL;
+	}
+	if (!test_bit(FM_FIRMWARE_DW_INPROGRESS, &fmdev->flag))
+		size =
+		    FM_CMD_MSG_HDR_SIZE + ((payload == NULL) ? 0 : payload_len);
+	else
+		size = payload_len;
+
+	skb = alloc_skb(size, GFP_ATOMIC);
+	if (!skb) {
+		pr_err("(fmdrv): No memory to create new SKB\n");
+		return -ENOMEM;
+	}
+	/*
+	 * Don't fill FM header info for the commands which come from
+	 * FM firmware file.
+	 */
+	if (!test_bit(FM_FIRMWARE_DW_INPROGRESS, &fmdev->flag) ||
+	    test_bit(FM_INTTASK_RUNNING, &fmdev->flag)) {
+		/* Fill command header info */
+		cmd_hdr =
+		    (struct fm_cmd_msg_hdr *)skb_put(skb, FM_CMD_MSG_HDR_SIZE);
+		cmd_hdr->header = FM_PKT_LOGICAL_CHAN_NUMBER;	/* 0x08 */
+		/* 3 (fm_opcode,rd_wr,dlen) + payload len) */
+		cmd_hdr->len = ((payload == NULL) ? 0 : payload_len) + 3;
+		/* FM opcode */
+		cmd_hdr->fm_opcode = fm_opcode;
+		/* read/write type */
+		cmd_hdr->rd_wr = type;
+		cmd_hdr->dlen = payload_len;
+		fm_cb(skb)->fm_opcode = fm_opcode;
+		/*
+		 * If firmware download has finished and the command is
+		 * not a read command then payload is != NULL - a write
+		 * command with unsigned short payload - convert to be16
+		 */
+		if (payload != NULL)
+			*(unsigned short *)payload =
+				cpu_to_be16(*(unsigned short *)payload);
+	} else if (payload != NULL) {
+		fm_cb(skb)->fm_opcode = *((char *)payload + 2);
+	}
+	if (payload != NULL)
+		memcpy(skb_put(skb, payload_len), payload, payload_len);
+
+	fm_cb(skb)->completion = wait_completion;
+	skb_queue_tail(&fmdev->tx_q, skb);
+	tasklet_schedule(&fmdev->tx_task);
+
+	return 0;
+}
+
+/* Sends FM Channel-8 command to the chip and waits for the reponse */
+int fmc_send_cmd(struct fmdrv_ops *fmdev, unsigned char fm_opcode,
+			unsigned short int type, void *payload, int payload_len,
+			void *reponse, int *reponse_len)
+{
+	struct sk_buff *skb;
+	struct fm_event_msg_hdr *fm_evt_hdr;
+	unsigned long timeleft;
+	unsigned long flags;
+	int ret;
+
+	init_completion(&fmdev->maintask_completion);
+	ret = __fm_send_cmd(fmdev, fm_opcode, type, payload, payload_len,
+			    &fmdev->maintask_completion);
+	if (ret < 0)
+		goto exit;
+
+	timeleft = wait_for_completion_timeout(&fmdev->maintask_completion,
+					       FM_DRV_TX_TIMEOUT);
+	if (!timeleft) {
+		pr_err("(fmdrv): Timeout(%d sec),didn't get reg"
+			   "completion signal from RX tasklet\n",
+			   jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000);
+		return -ETIMEDOUT;
+		goto exit;
+	}
+	if (!fmdev->response_skb) {
+		pr_err("(fmdrv): Reponse SKB is missing\n");
+		return -EFAULT;
+		goto exit;
+	}
+	spin_lock_irqsave(&fmdev->resp_skb_lock, flags);
+	skb = fmdev->response_skb;
+	fmdev->response_skb = NULL;
+	spin_unlock_irqrestore(&fmdev->resp_skb_lock, flags);
+
+	fm_evt_hdr = (void *)skb->data;
+	if (fm_evt_hdr->status != 0) {
+		pr_err("(fmdrv): Received event pkt status(%d) is not zero\n",
+			   fm_evt_hdr->status);
+		kfree_skb(skb);
+		ret = -EIO;
+		goto exit;
+	}
+	/* Send reponse data to caller */
+	if (reponse != NULL && reponse_len != NULL && fm_evt_hdr->dlen) {
+		/* Skip header info and copy only response data */
+		skb_pull(skb, sizeof(struct fm_event_msg_hdr));
+		memcpy(reponse, skb->data, fm_evt_hdr->dlen);
+		*reponse_len = fm_evt_hdr->dlen;
+	} else if (reponse_len != NULL && fm_evt_hdr->dlen == 0) {
+		*reponse_len = 0;
+	}
+	kfree_skb(skb);
+exit:
+	if (ret < 0) {
+		pr_err("(fmdrv): Command %d failed\n", fm_opcode);
+		return ret;
+	}
+
+	return ret;
+}
+
+/* --- Helper functions used in FM interrupt handlers ---*/
+static inline int __check_cmdresp_status(struct fmdrv_ops *fmdev,
+						struct sk_buff **skb)
+{
+	struct fm_event_msg_hdr *fm_evt_hdr;
+	unsigned long flags;
+
+	del_timer(&fmdev->irq_info.int_timeout_timer);
+
+	spin_lock_irqsave(&fmdev->resp_skb_lock, flags);
+	*skb = fmdev->response_skb;
+	fmdev->response_skb = NULL;
+	spin_unlock_irqrestore(&fmdev->resp_skb_lock, flags);
+
+	fm_evt_hdr = (void *)(*skb)->data;
+	if (fm_evt_hdr->status != 0) {
+		pr_err("(fmdrv): irq: opcode %x response status is not zero "
+				"Initiating irq recovery process\n",
+				fm_evt_hdr->fm_opcode);
+
+		mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies +
+				FM_DRV_TX_TIMEOUT);
+		return -1;
+	}
+
+	return 0;
+}
+
+/*
+ * Interrupt process timeout handler.
+ * One of the irq handler did not get proper response from the chip. So take
+ * recovery action here. FM interrupts are disabled in the beginning of
+ * interrupt process. Therefore reset stage index to re-enable default
+ * interrupts. So that next interrupt will be processed as usual.
+ */
+static void __int_timeout_handler(unsigned long data)
+{
+	struct fmdrv_ops *fmdev;
+
+	pr_debug("(fmdrv): irq: timeout,trying to re-enable fm interrupts\n");
+	fmdev = (struct fmdrv_ops *)data;
+	fmdev->irq_info.irq_service_timeout_retry++;
+
+	if (fmdev->irq_info.irq_service_timeout_retry <=
+	    FM_IRQ_TIMEOUT_RETRY_MAX) {
+		fmdev->irq_info.stage_index = FM_SEND_INTMSK_CMD_INDEX;
+		fmdev->irq_info.fm_int_handlers[fmdev->irq_info.
+							 stage_index] (fmdev);
+	} else {
+		/*
+		 * Stop recovery action (interrupt reenable process) and
+		 * reset stage index & retry count values
+		 */
+		fmdev->irq_info.stage_index = 0;
+		fmdev->irq_info.irq_service_timeout_retry = 0;
+		pr_err("(fmdrv): Recovery action failed during"
+			"irq processing, max retry reached\n");
+	}
+}
+
+/* --------- FM interrupt handlers ------------*/
+static void fm_irq_send_flag_getcmd(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+	unsigned short flag;
+	int ret;
+
+	fmdev = arg;
+	/* Send FLAG_GET command , to know the source of interrupt */
+	ret = __fm_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, sizeof(flag), NULL);
+	if (ret)
+		pr_err("(fmdrv): irq: failed to send flag_get command,"
+			   "initiating irq recovery process\n");
+	else
+		fmdev->irq_info.stage_index = FM_HANDLE_FLAG_GETCMD_RESP_INDEX;
+
+	mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies +
+		  FM_DRV_TX_TIMEOUT);
+}
+
+static void fm_irq_handle_flag_getcmd_resp(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+	struct sk_buff *skb;
+	struct fm_event_msg_hdr *fm_evt_hdr;
+	char ret;
+
+	fmdev = arg;
+
+	ret = __check_cmdresp_status(fmdev, &skb);
+	if (ret < 0)
+		return;
+
+	fm_evt_hdr = (void *)skb->data;
+
+	/* Skip header info and copy only response data */
+	skb_pull(skb, sizeof(struct fm_event_msg_hdr));
+	memcpy(&fmdev->irq_info.flag, skb->data, fm_evt_hdr->dlen);
+
+	fmdev->irq_info.flag = be16_to_cpu(fmdev->irq_info.flag);
+	pr_debug("(fmdrv): irq: flag register(0x%x)\n", fmdev->irq_info.flag);
+
+	/* Continue next function in interrupt handler table */
+	fmdev->irq_info.stage_index = FM_HW_MAL_FUNC_INDEX;
+
+	fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev);
+}
+
+static void fm_irq_handle_hw_malfunction(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+
+	fmdev = arg;
+	if (fmdev->irq_info.flag & FM_MAL_EVENT & fmdev->irq_info.mask)
+		pr_err("(fmdrv): irq: HW MAL int received - do nothing\n");
+
+	/* Continue next function in interrupt handler table */
+	fmdev->irq_info.stage_index = FM_RDS_START_INDEX;
+	fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev);
+}
+
+static void fm_irq_handle_rds_start(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+
+	fmdev = arg;
+	if (fmdev->irq_info.flag & FM_RDS_EVENT & fmdev->irq_info.mask) {
+		pr_debug("(fmdrv): irq: rds threshold reached\n");
+		fmdev->irq_info.stage_index = FM_RDS_SEND_RDS_GETCMD_INDEX;
+	} else {
+		/* Continue next function in interrupt handler table */
+		fmdev->irq_info.stage_index = FM_HW_TUNE_OP_ENDED_INDEX;
+	}
+	fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev);
+}
+
+static void fm_irq_send_rdsdata_getcmd(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+	int ret;
+
+	fmdev = arg;
+	/* Send the command to read RDS data from the chip */
+	ret = __fm_send_cmd(fmdev, RDS_DATA_GET, REG_RD, NULL,
+			    (FM_RX_RDS_FIFO_THRESHOLD * 3), NULL);
+	if (ret < 0)
+		pr_err("(fmdrv): irq : failed to send rds get command,"
+			   "initiating irq recovery process\n");
+	else
+		fmdev->irq_info.stage_index =
+		    FM_RDS_HANDLE_RDS_GETCMD_RESP_INDEX;
+
+	/* Start timer to track timeout */
+	mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies +
+		  FM_DRV_TX_TIMEOUT);
+}
+
+/* Keeps track of current RX channel AF (Alternate Frequency) */
+static void __fm_rx_update_af_cache(struct fmdrv_ops *fmdev,
+					unsigned char af)
+{
+	unsigned char index;
+	unsigned int freq;
+
+	/* First AF indicates the number of AF follows. Reset the list */
+	if ((af >= FM_RDS_1_AF_FOLLOWS) && (af <= FM_RDS_25_AF_FOLLOWS)) {
+		fmdev->rx.cur_station_info.af_list_max =
+		    (af - FM_RDS_1_AF_FOLLOWS + 1);
+		fmdev->rx.cur_station_info.no_of_items_in_afcache = 0;
+		pr_debug("(fmdrv): No of expected AF : %d\n",
+			   fmdev->rx.cur_station_info.af_list_max);
+	} else if (((af >= FM_RDS_MIN_AF)
+		    && (fmdev->rx.region.region_index == FM_BAND_EUROPE_US)
+		    && (af <= FM_RDS_MAX_AF)) || ((af >= FM_RDS_MIN_AF)
+						  && (fmdev->rx.region.
+						      region_index ==
+						      FM_BAND_JAPAN)
+						  && (af <=
+						      FM_RDS_MAX_AF_JAPAN))) {
+		freq = fmdev->rx.region.bottom_frequency + (af * 100);
+		if (freq == fmdev->rx.curr_freq) {
+			pr_debug("(fmdrv): Current frequency(%d) is"
+				"matching with received AF(%d)\n",
+			    fmdev->rx.curr_freq, freq);
+			return;
+		}
+		/* Do check in AF cache */
+		for (index = 0;
+		     index < fmdev->rx.cur_station_info.no_of_items_in_afcache;
+		     index++) {
+			if (fmdev->rx.cur_station_info.af_cache[index] == freq)
+				break;
+		}
+		/* Reached the limit of the list - ignore the next AF */
+		if (index == fmdev->rx.cur_station_info.af_list_max) {
+			pr_debug("(fmdrv): AF cache is full\n");
+			return;
+		}
+		/*
+		 * If we reached the end of the list then this AF is not
+		 * in the list - add it.
+		 */
+		if (index == fmdev->rx.cur_station_info.
+				   no_of_items_in_afcache) {
+			pr_debug("(fmdrv): Storing AF %d to cache index %d\n",
+					freq, index);
+			fmdev->rx.cur_station_info.af_cache[index] = freq;
+			fmdev->rx.cur_station_info.no_of_items_in_afcache++;
+		}
+	}
+}
+
+/*
+ * Converts RDS buffer data from big endian format
+ * to little endian format.
+ */
+static void __fm_rdsparse_swapbytes(struct fmdrv_ops *fmdev,
+					struct fm_rdsdata_format *rds_format)
+{
+	unsigned char byte1;
+	unsigned char index = 0;
+	char *rds_buff;
+
+	/*
+	 * Since in Orca the 2 RDS Data bytes are in little endian and
+	 * in Dolphin they are in big endian, the parsing of the RDS data
+	 * is chip dependent
+	 */
+	if (fmdev->asci_id != 0x6350) {
+		rds_buff = &rds_format->rdsdata.groupdatabuff.rdsbuff[0];
+		while (index + 1 < FM_RX_RDS_INFO_FIELD_MAX) {
+			byte1 = rds_buff[index];
+			rds_buff[index] = rds_buff[index + 1];
+			rds_buff[index + 1] = byte1;
+			index += 2;
+		}
+	}
+}
+
+static void fm_irq_handle_rdsdata_getcmd_resp(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+	struct sk_buff *skb;
+	char *rds_data;
+	char meta_data;
+	unsigned char type, block_index;
+	unsigned long group_index;
+	struct fm_rdsdata_format rds_format;
+	int rds_len, ret;
+	unsigned short cur_picode;
+	unsigned char tmpbuf[3];
+	unsigned long flags;
+
+	fmdev = arg;
+
+	ret = __check_cmdresp_status(fmdev, &skb);
+	if (ret < 0)
+		return;
+
+	/* Skip header info */
+	skb_pull(skb, sizeof(struct fm_event_msg_hdr));
+	rds_data = skb->data;
+	rds_len = skb->len;
+
+	/* Parse the RDS data */
+	while (rds_len >= FM_RDS_BLOCK_SIZE) {
+		meta_data = rds_data[2];
+		/*
+		 * Get the type:
+		 * 0=A, 1=B, 2=C, 3=C', 4=D, 5=E
+		 */
+		type = (meta_data & 0x07);
+
+		/*
+		 * Transform the block type into an
+		 * index sequence (0, 1, 2, 3, 4)
+		 */
+		block_index = (type <= FM_RDS_BLOCK_C ? type : (type - 1));
+		pr_debug("(fmdrv): Block index:%d(%s)\n", block_index,
+			   (meta_data & FM_RDS_STATUS_ERROR_MASK) ? "Bad" :
+			   "Ok");
+		if (((meta_data & FM_RDS_STATUS_ERROR_MASK) == 0)
+		    && (block_index == FM_RDS_BLOCK_INDEX_A
+			|| (block_index == fmdev->rx.rds.last_block_index + 1
+			    && block_index <= FM_RDS_BLOCK_INDEX_D))) {
+			/*
+			 * Skip checkword (control) byte and copy only data
+			 * byte
+			 */
+			memcpy(&rds_format.rdsdata.groupdatabuff.
+			       rdsbuff[block_index * (FM_RDS_BLOCK_SIZE - 1)],
+			       rds_data, (FM_RDS_BLOCK_SIZE - 1));
+			fmdev->rx.rds.last_block_index = block_index;
+
+			/* If completed a whole group then handle it */
+			if (block_index == FM_RDS_BLOCK_INDEX_D) {
+				pr_debug("(fmdrv): Good block received\n");
+				__fm_rdsparse_swapbytes(fmdev, &rds_format);
+
+				/*
+				 * Extract PI code and store in local cache.
+				 * We need this during AF switch processing.
+				 */
+				cur_picode = be16_to_cpu
+				(rds_format.rdsdata.groupgeneral.pidata);
+				if (fmdev->rx.cur_station_info.picode !=
+				    cur_picode)
+					fmdev->rx.cur_station_info.picode =
+					    cur_picode;
+				pr_debug("(fmdrv): picode:%d\n", cur_picode);
+
+				group_index =
+				    (rds_format.rdsdata.groupgeneral.
+				     block_b_byte1 >> 3);
+				pr_debug("(fmdrv):Group:%ld%s\n", group_index/2,
+					   (group_index % 2) ? "B" : "A");
+
+				group_index =
+				    1 << (rds_format.rdsdata.groupgeneral.
+					  block_b_byte1 >> 3);
+				if (group_index == FM_RDS_GROUP_TYPE_MASK_0A) {
+					__fm_rx_update_af_cache
+					    (fmdev, rds_format.rdsdata.
+					     group0A.firstaf);
+					__fm_rx_update_af_cache
+						(fmdev, rds_format.
+						 rdsdata.group0A.secondaf);
+				}
+			}
+		} else {
+			pr_debug("(fmdrv): Block sequence mismatch\n");
+			fmdev->rx.rds.last_block_index = -1;
+		}
+		rds_len -= FM_RDS_BLOCK_SIZE;
+		rds_data += FM_RDS_BLOCK_SIZE;
+	}
+
+	/* Copy raw rds data to internal rds buffer */
+	rds_data = skb->data;
+	rds_len = skb->len;
+
+	spin_lock_irqsave(&fmdev->rds_buff_lock, flags);
+	while (rds_len > 0) {
+		/*
+		 * Fill RDS buffer as per V4L2 specification.
+		 * Store control byte
+		 */
+		type = (rds_data[2] & 0x07);
+		block_index = (type <= FM_RDS_BLOCK_C ? type : (type - 1));
+		tmpbuf[2] = block_index;	/* Offset name */
+		tmpbuf[2] |= block_index << 3;	/* Received offset */
+
+		/* Store data byte */
+		tmpbuf[0] = rds_data[0];
+		tmpbuf[1] = rds_data[1];
+
+		memcpy(&fmdev->rx.rds.buffer[fmdev->rx.rds.wr_index], &tmpbuf,
+		       FM_RDS_BLOCK_SIZE);
+		fmdev->rx.rds.wr_index =
+		    (fmdev->rx.rds.wr_index +
+		     FM_RDS_BLOCK_SIZE) % fmdev->rx.rds.buf_size;
+
+		/* Check for overflow & start over */
+		if (fmdev->rx.rds.wr_index == fmdev->rx.rds.rd_index) {
+			pr_debug("(fmdrv): RDS buffer overflow\n");
+			fmdev->rx.rds.wr_index = 0;
+			fmdev->rx.rds.rd_index = 0;
+			break;
+		}
+		rds_len -= FM_RDS_BLOCK_SIZE;
+		rds_data += FM_RDS_BLOCK_SIZE;
+	}
+	spin_unlock_irqrestore(&fmdev->rds_buff_lock, flags);
+
+	/* Wakeup read queue */
+	if (fmdev->rx.rds.wr_index != fmdev->rx.rds.rd_index)
+		wake_up_interruptible(&fmdev->rx.rds.read_queue);
+
+	fmdev->irq_info.stage_index = FM_RDS_FINISH_INDEX;
+	fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev);
+}
+
+static void fm_irq_handle_rds_finish(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+
+	fmdev = arg;
+	/* Continue next function in interrupt handler table */
+	fmdev->irq_info.stage_index = FM_HW_TUNE_OP_ENDED_INDEX;
+	fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev);
+}
+
+static void fm_irq_handle_tune_op_ended(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+	fmdev = arg;
+	if (fmdev->irq_info.flag & (FM_FR_EVENT | FM_BL_EVENT) & fmdev->
+	    irq_info.mask) {
+		pr_debug("(fmdrv): irq: tune ended/bandlimit reached\n");
+		if (test_and_clear_bit(FM_AF_SWITCH_INPROGRESS, &fmdev->flag)) {
+			fmdev->irq_info.stage_index = FM_AF_JUMP_RD_FREQ_INDEX;
+		} else {
+			complete(&fmdev->maintask_completion);
+			fmdev->irq_info.stage_index = FM_HW_POWER_ENB_INDEX;
+		}
+	} else
+		fmdev->irq_info.stage_index = FM_HW_POWER_ENB_INDEX;
+
+	fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev);
+}
+
+static void fm_irq_handle_power_enb(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+
+	fmdev = arg;
+	if (fmdev->irq_info.flag & FM_POW_ENB_EVENT) {
+		pr_debug("(fmdrv): irq: Power Enabled/Disabled\n");
+		complete(&fmdev->maintask_completion);
+	}
+
+	/* Continue next function in interrupt handler table */
+	fmdev->irq_info.stage_index = FM_LOW_RSSI_START_INDEX;
+	fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev);
+}
+
+static void fm_irq_handle_low_rssi_start(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+
+	fmdev = arg;
+	if ((fmdev->rx.af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON) &&
+	    (fmdev->irq_info.flag & FM_LEV_EVENT & fmdev->irq_info.mask) &&
+	    (fmdev->rx.curr_freq != FM_UNDEFINED_FREQ) &&
+	    (fmdev->rx.cur_station_info.no_of_items_in_afcache != 0)) {
+		pr_debug("(fmdrv): irq: rssi level has fallen below"
+			" threshold level\n");
+
+		/* Disable further low RSSI interrupts */
+		fmdev->irq_info.mask &= ~FM_LEV_EVENT;
+
+		fmdev->rx.cur_afjump_index = 0;
+		fmdev->rx.freq_before_jump = fmdev->rx.curr_freq;
+		fmdev->irq_info.stage_index = FM_AF_JUMP_SETPI_INDEX;
+	} else {
+		/* Continue next function in interrupt handler table */
+		fmdev->irq_info.stage_index = FM_SEND_INTMSK_CMD_INDEX;
+	}
+	fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev);
+}
+
+static void fm_irq_afjump_set_pi(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+	int ret;
+	unsigned short payload;
+
+	fmdev = arg;
+	/* Set PI code - must be updated if the AF list is not empty */
+	payload = fmdev->rx.cur_station_info.picode;
+	ret = __fm_send_cmd(fmdev, RDS_PI_SET, REG_WR, &payload,
+			sizeof(payload), NULL);
+	if (ret < 0)
+		pr_err("(fmdrv): irq : failed to set PI,"
+			   "initiating irq recovery process\n");
+	else
+		fmdev->irq_info.stage_index =
+		    FM_AF_JUMP_HANDLE_SETPI_RESP_INDEX;
+
+	mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies +
+		  FM_DRV_TX_TIMEOUT);
+}
+
+static void fm_irq_handle_set_pi_resp(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+	struct sk_buff *skb;
+	int ret;
+
+	fmdev = arg;
+
+	ret = __check_cmdresp_status(fmdev, &skb);
+	if (ret < 0)
+		return;
+
+	/* Continue next function in interrupt handler table */
+	fmdev->irq_info.stage_index = FM_AF_JUMP_SETPI_MASK_INDEX;
+
+	fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev);
+}
+
+/*
+ * Set PI mask.
+ * 0xFFFF = Enable PI code matching
+ * 0x0000 = Disable PI code matching
+ */
+static void fm_irq_afjump_set_pimask(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+	int ret;
+	unsigned short payload;
+
+	fmdev = arg;
+	payload = 0x0000;
+	ret = __fm_send_cmd(fmdev, RDS_PI_MASK_SET, REG_WR, &payload,
+			sizeof(payload), NULL);
+	if (ret < 0)
+		pr_err("(fmdrv): irq: failed to set PI mask, "
+			   "initiating irq recovery process\n");
+	else
+		fmdev->irq_info.stage_index =
+		    FM_AF_JUMP_HANDLE_SETPI_MASK_RESP_INDEX;
+
+	mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies +
+		  FM_DRV_TX_TIMEOUT);
+}
+
+static void fm_irq_handle_set_pimask_resp(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+	struct sk_buff *skb;
+	int ret;
+
+	fmdev = arg;
+
+	ret = __check_cmdresp_status(fmdev, &skb);
+	if (ret < 0)
+		return;
+
+	/* Continue next function in interrupt handler table */
+	fmdev->irq_info.stage_index = FM_AF_JUMP_SET_AF_FREQ_INDEX;
+	fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev);
+}
+
+static void fm_irq_afjump_setfreq(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+	unsigned short frq_index;
+	unsigned short payload;
+	int ret;
+
+	fmdev = arg;
+	pr_debug("(fmdrv): Swtiching to %d KHz\n",
+	       fmdev->rx.cur_station_info.af_cache[fmdev->rx.cur_afjump_index]);
+	frq_index =
+	    (fmdev->rx.cur_station_info.af_cache[fmdev->rx.cur_afjump_index] -
+	     fmdev->rx.region.bottom_frequency) / FM_FREQ_MUL;
+
+	payload = frq_index;
+	ret = __fm_send_cmd(fmdev, AF_FREQ_SET, REG_WR, &payload,
+			sizeof(payload), NULL);
+	if (ret < 0)
+		pr_err("(fmdrv): irq : failed to set AF freq, "
+			   "initiating irq recovery process\n");
+	else
+		fmdev->irq_info.stage_index =
+		    FM_AF_JUMP_HENDLE_SET_AFFREQ_RESP_INDEX;
+
+	mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies +
+		  FM_DRV_TX_TIMEOUT);
+}
+
+static void fm_irq_handle_setfreq_resp(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+	struct sk_buff *skb;
+	int ret;
+
+	fmdev = arg;
+
+	ret = __check_cmdresp_status(fmdev, &skb);
+	if (ret < 0) {
+		return;
+	} else {
+		/* Continue next function in interrupt handler table */
+		fmdev->irq_info.stage_index = FM_AF_JUMP_ENABLE_INT_INDEX;
+	}
+	fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev);
+}
+
+static void fm_irq_afjump_enableint(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+	unsigned short payload;
+	int ret;
+
+	fmdev = arg;
+	/* Enable FR (tuning operation ended) interrupt */
+	payload = FM_FR_EVENT;
+	ret = __fm_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
+			sizeof(payload), NULL);
+	if (ret)
+		pr_err("(fmdrv): irq : failed to enable FR interrupt, "
+			   "initiating irq recovery process\n");
+	else
+		fmdev->irq_info.stage_index = FM_AF_JUMP_ENABLE_INT_RESP_INDEX;
+
+	mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies +
+		  FM_DRV_TX_TIMEOUT);
+}
+
+static void fm_irq_afjump_enableint_resp(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+	struct sk_buff *skb;
+	int ret;
+
+	fmdev = arg;
+
+	ret = __check_cmdresp_status(fmdev, &skb);
+	if (ret < 0)
+		return;
+
+	/* Continue next function in interrupt handler table */
+	fmdev->irq_info.stage_index = FM_AF_JUMP_START_AFJUMP_INDEX;
+	fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev);
+}
+
+static void fm_irq_start_afjump(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+	unsigned short payload;
+	int ret;
+
+	fmdev = arg;
+	payload = FM_TUNER_AF_JUMP_MODE;
+	ret = __fm_send_cmd(fmdev, TUNER_MODE_SET, REG_WR, &payload,
+			sizeof(payload), NULL);
+	if (ret)
+		pr_err("(fmdrv): irq : failed to start af switch, "
+			   "initiating irq recovery process\n");
+	else
+		fmdev->irq_info.stage_index =
+		    FM_AF_JUMP_HANDLE_START_AFJUMP_RESP_INDEX;
+
+	mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies +
+		  FM_DRV_TX_TIMEOUT);
+}
+
+static void fm_irq_handle_start_afjump_resp(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+	struct sk_buff *skb;
+	int ret;
+
+	fmdev = arg;
+
+	ret = __check_cmdresp_status(fmdev, &skb);
+	if (ret < 0)
+		return;
+
+	fmdev->irq_info.stage_index = FM_SEND_FLAG_GETCMD_INDEX;
+	set_bit(FM_AF_SWITCH_INPROGRESS, &fmdev->flag);
+	clear_bit(FM_INTTASK_RUNNING, &fmdev->flag);
+}
+
+static void fm_irq_afjump_rd_freq(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+	unsigned short payload;
+	int ret;
+
+	fmdev = arg;
+	ret = __fm_send_cmd(fmdev, FREQ_SET, REG_RD, NULL,
+			sizeof(payload), NULL);
+	if (ret < 0)
+		pr_err("(fmdrv): irq: failed to read cur freq, "
+			   "initiating irq recovery process\n");
+	else
+		fmdev->irq_info.stage_index = FM_AF_JUMP_RD_FREQ_RESP_INDEX;
+
+	/* Start timer to track timeout */
+	mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies +
+		  FM_DRV_TX_TIMEOUT);
+}
+
+static void fm_irq_afjump_rd_freq_resp(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+	struct sk_buff *skb;
+	unsigned short read_freq;
+	unsigned int curr_freq, jumped_freq;
+	int ret;
+
+	fmdev = arg;
+
+	ret = __check_cmdresp_status(fmdev, &skb);
+	if (ret < 0)
+		return;
+
+	/* Skip header info and copy only response data */
+	skb_pull(skb, sizeof(struct fm_event_msg_hdr));
+	memcpy(&read_freq, skb->data, sizeof(read_freq));
+	read_freq = be16_to_cpu(read_freq);
+	curr_freq = fmdev->rx.region.bottom_frequency +
+	    ((unsigned int)read_freq * FM_FREQ_MUL);
+
+	jumped_freq =
+	    fmdev->rx.cur_station_info.af_cache[fmdev->rx.cur_afjump_index];
+
+	/* If the frequency was changed the jump succeeded */
+	if ((curr_freq != fmdev->rx.freq_before_jump) &&
+	    (curr_freq == jumped_freq)) {
+		pr_debug("(fmdrv): Successfully switched to alternate"
+			"frequency %d\n", curr_freq);
+		fmdev->rx.curr_freq = curr_freq;
+		fm_rx_reset_rds_cache(fmdev);
+
+		/* AF feature is on, enable low level RSSI interrupt */
+		if (fmdev->rx.af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON)
+			fmdev->irq_info.mask |= FM_LEV_EVENT;
+
+		fmdev->irq_info.stage_index = FM_LOW_RSSI_FINISH_INDEX;
+	} else {		/* jump to the next freq in the AF list */
+		fmdev->rx.cur_afjump_index++;
+
+		/* If we reached the end of the list - stop searching */
+		if (fmdev->rx.cur_afjump_index >=
+		    fmdev->rx.cur_station_info.no_of_items_in_afcache) {
+			pr_debug("(fmdrv): AF switch processing failed\n");
+			fmdev->irq_info.stage_index = FM_LOW_RSSI_FINISH_INDEX;
+		} else {	/* AF List is not over - try next one */
+
+			pr_debug("(fmdrv): Trying next freq in AF cache\n");
+			fmdev->irq_info.stage_index = FM_AF_JUMP_SETPI_INDEX;
+		}
+	}
+	fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev);
+}
+
+static void fm_irq_handle_low_rssi_finish(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+
+	fmdev = arg;
+	/* Continue next function in interrupt handler table */
+	fmdev->irq_info.stage_index = FM_SEND_INTMSK_CMD_INDEX;
+	fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index](fmdev);
+}
+
+static void fm_irq_send_intmsk_cmd(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+	unsigned short payload;
+	int ret;
+
+	fmdev = arg;
+
+	/* Re-enable FM interrupts */
+	payload = fmdev->irq_info.mask;
+	ret = __fm_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
+			sizeof(payload), NULL);
+	if (ret)
+		pr_err("(fmdrv): irq: failed to send int_mask_set cmd, "
+			   "initiating irq recovery process\n");
+	else
+		fmdev->irq_info.stage_index = FM_HANDLE_INTMSK_CMD_RESP_INDEX;
+
+	/* Start timer to track timeout */
+	mod_timer(&fmdev->irq_info.int_timeout_timer, jiffies +
+		  FM_DRV_TX_TIMEOUT);
+}
+
+static void fm_irq_handle_intmsk_cmd_resp(void *arg)
+{
+	struct fmdrv_ops *fmdev;
+	struct sk_buff *skb;
+	int ret;
+
+	fmdev = arg;
+
+	ret = __check_cmdresp_status(fmdev, &skb);
+	if (ret < 0)
+		return;
+	/*
+	 * This is last function in interrupt table to be executed.
+	 * So, reset stage index to 0.
+	 */
+	fmdev->irq_info.stage_index = FM_SEND_FLAG_GETCMD_INDEX;
+
+	/* Start processing any pending interrupt */
+	if (test_and_clear_bit(FM_INTTASK_SCHEDULE_PENDING, &fmdev->flag)) {
+		fmdev->irq_info.fm_int_handlers[fmdev->irq_info.stage_index]
+						(fmdev);
+	} else
+		clear_bit(FM_INTTASK_RUNNING, &fmdev->flag);
+}
+
+/* Returns availability of RDS data in internel buffer */
+int fmc_is_rds_data_available(struct fmdrv_ops *fmdev, struct file *file,
+				struct poll_table_struct *pts)
+{
+	poll_wait(file, &fmdev->rx.rds.read_queue, pts);
+	if (fmdev->rx.rds.rd_index != fmdev->rx.rds.wr_index)
+		return 0;
+
+	return -EAGAIN;
+}
+
+/* Copies RDS data from internal buffer to user buffer */
+int fmc_transfer_rds_from_internal_buff(struct fmdrv_ops *fmdev,
+					struct file *file,
+					char __user *buf, size_t count)
+{
+	unsigned int block_count;
+	unsigned long flags;
+	int ret;
+
+	if (fmdev->rx.rds.wr_index == fmdev->rx.rds.rd_index) {
+		if (file->f_flags & O_NONBLOCK)
+			return -EWOULDBLOCK;
+
+		ret = wait_event_interruptible(fmdev->rx.rds.read_queue,
+					       (fmdev->rx.rds.wr_index !=
+						fmdev->rx.rds.rd_index));
+		if (ret)
+			return -EINTR;
+	}
+
+	/* Calculate block count from byte count */
+	count /= 3;
+	block_count = 0;
+	ret = 0;
+
+	spin_lock_irqsave(&fmdev->rds_buff_lock, flags);
+
+	while (block_count < count) {
+		if (fmdev->rx.rds.wr_index == fmdev->rx.rds.rd_index)
+			break;
+
+		if (copy_to_user
+		    (buf, &fmdev->rx.rds.buffer[fmdev->rx.rds.rd_index],
+		     FM_RDS_BLOCK_SIZE))
+			break;
+
+		fmdev->rx.rds.rd_index += FM_RDS_BLOCK_SIZE;
+		if (fmdev->rx.rds.rd_index >= fmdev->rx.rds.buf_size)
+			fmdev->rx.rds.rd_index = 0;
+
+		block_count++;
+		buf += FM_RDS_BLOCK_SIZE;
+		ret += FM_RDS_BLOCK_SIZE;
+	}
+	spin_unlock_irqrestore(&fmdev->rds_buff_lock, flags);
+	return ret;
+}
+
+int fmc_set_frequency(struct fmdrv_ops *fmdev, unsigned int freq_to_set)
+{
+	int ret;
+
+	switch (fmdev->curr_fmmode) {
+	case FM_MODE_RX:
+		ret = fm_rx_set_frequency(fmdev, freq_to_set);
+		break;
+
+	case FM_MODE_TX:
+		ret = fm_tx_set_frequency(fmdev, freq_to_set);
+		break;
+
+	default:
+		ret = -EINVAL;
+	}
+	return ret;
+}
+
+int fmc_get_frequency(struct fmdrv_ops *fmdev, unsigned int *cur_tuned_frq)
+{
+	int ret = 0;
+
+	if (fmdev->rx.curr_freq == FM_UNDEFINED_FREQ) {
+		pr_err("(fmdrv): RX frequency is not set\n");
+		return -EPERM;
+	}
+	if (cur_tuned_frq == NULL) {
+		pr_err("(fmdrv): Invalid memory\n");
+		return -ENOMEM;
+	}
+
+	switch (fmdev->curr_fmmode) {
+	case FM_MODE_RX:
+		*cur_tuned_frq = fmdev->rx.curr_freq;
+		break;
+
+	case FM_MODE_TX:
+		*cur_tuned_frq = 0;	/* TODO : Change this later */
+		break;
+
+	default:
+		ret = -EINVAL;
+	}
+
+	return ret;
+}
+
+int fmc_set_region(struct fmdrv_ops *fmdev, unsigned char region_to_set)
+{
+	int ret;
+
+	switch (fmdev->curr_fmmode) {
+	case FM_MODE_RX:
+		ret = fm_rx_set_region(fmdev, region_to_set);
+		break;
+
+	case FM_MODE_TX:
+		ret = fm_tx_set_region(fmdev, region_to_set);
+		break;
+
+	default:
+		ret = -EINVAL;
+	}
+	return ret;
+}
+
+int fmc_set_mute_mode(struct fmdrv_ops *fmdev, unsigned char mute_mode_toset)
+{
+	int ret;
+
+	switch (fmdev->curr_fmmode) {
+	case FM_MODE_RX:
+		ret = fm_rx_set_mute_mode(fmdev, mute_mode_toset);
+		break;
+
+	case FM_MODE_TX:
+		ret = fm_tx_set_mute_mode(fmdev, mute_mode_toset);
+		break;
+
+	default:
+		ret = -EINVAL;
+	}
+	return ret;
+}
+
+int fmc_set_stereo_mono(struct fmdrv_ops *fmdev, unsigned short mode)
+{
+	int ret;
+
+	switch (fmdev->curr_fmmode) {
+	case FM_MODE_RX:
+		ret = fm_rx_set_stereo_mono(fmdev, mode);
+		break;
+
+	case FM_MODE_TX:
+		ret = fm_tx_set_stereo_mono(fmdev, mode);
+		break;
+
+	default:
+		ret = -EINVAL;
+	}
+	return ret;
+}
+
+int fmc_set_rds_mode(struct fmdrv_ops *fmdev, unsigned char rds_en_dis)
+{
+	int ret;
+
+	switch (fmdev->curr_fmmode) {
+	case FM_MODE_RX:
+		ret = fm_rx_set_rds_mode(fmdev, rds_en_dis);
+		break;
+
+	case FM_MODE_TX:
+		ret = fm_tx_set_rds_mode(fmdev, rds_en_dis);
+		break;
+
+	default:
+		ret = -EINVAL;
+	}
+	return ret;
+}
+
+/* Sends power off command to the chip */
+static int fm_power_down(struct fmdrv_ops *fmdev)
+{
+	unsigned short payload;
+	int ret = 0;
+
+	if (!test_bit(FM_CORE_READY, &fmdev->flag)) {
+		pr_err("(fmdrv): FM core is not ready\n");
+		return -EPERM;
+	}
+	if (fmdev->curr_fmmode == FM_MODE_OFF) {
+		pr_debug("(fmdrv): FM chip is already in OFF state\n");
+		return ret;
+	}
+
+	payload = 0x0;
+	ret = fmc_send_cmd(fmdev, FM_POWER_MODE, REG_WR, &payload,
+		sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	ret = fmc_release(fmdev);
+	if (ret < 0)
+		pr_err("(fmdrv): FM CORE release failed\n");
+
+	return ret;
+}
+
+/* Reads init command from FM firmware file and loads to the chip */
+static int fm_download_firmware(struct fmdrv_ops *fmdev,
+				const char *firmware_name)
+{
+	const struct firmware *fw_entry;
+	struct bts_header *fw_header;
+	struct bts_action *action;
+	struct bts_action_delay *delay;
+	char *fw_data;
+	int ret, fw_len, cmd_cnt;
+
+	cmd_cnt = 0;
+	set_bit(FM_FIRMWARE_DW_INPROGRESS, &fmdev->flag);
+
+	ret = request_firmware(&fw_entry, firmware_name,
+				&fmdev->radio_dev->dev);
+	if (ret < 0) {
+		pr_err("(fmdrv): Unable to read firmware(%s) content\n",
+			   firmware_name);
+		return ret;
+	}
+	pr_debug("(fmdrv): Firmware(%s) length : %d bytes\n", firmware_name,
+		   fw_entry->size);
+
+	fw_data = (void *)fw_entry->data;
+	fw_len = fw_entry->size;
+
+	fw_header = (struct bts_header *)fw_data;
+	if (fw_header->magic != FM_FW_FILE_HEADER_MAGIC) {
+		pr_err("(fmdrv): %s not a legal TI firmware file\n",
+			firmware_name);
+		ret = -EINVAL;
+		goto rel_fw;
+	}
+	pr_debug("(fmdrv): Firmware(%s) magic number : 0x%x\n", firmware_name,
+		   fw_header->magic);
+
+	/* Skip file header info , we already verified it */
+	fw_data += sizeof(struct bts_header);
+	fw_len -= sizeof(struct bts_header);
+
+	while (fw_data && fw_len > 0) {
+		action = (struct bts_action *)fw_data;
+
+		switch (action->type) {
+		case ACTION_SEND_COMMAND:	/* Send */
+			ret = fmc_send_cmd(fmdev, 0, 0, action->data,
+				action->size, NULL, NULL);
+			if (ret < 0)
+				goto rel_fw;
+
+			cmd_cnt++;
+			break;
+
+		case ACTION_DELAY:	/* Delay */
+			delay = (struct bts_action_delay *)action->data;
+			mdelay(delay->msec);
+			break;
+		}
+
+		fw_data += (sizeof(struct bts_action) + (action->size));
+		fw_len -= (sizeof(struct bts_action) + (action->size));
+	}
+	pr_debug("(fmdrv): Firmare commands(%d) loaded to chip\n", cmd_cnt);
+rel_fw:
+	release_firmware(fw_entry);
+	clear_bit(FM_FIRMWARE_DW_INPROGRESS, &fmdev->flag);
+
+	return ret;
+}
+
+/* Loads default RX configuration to the chip */
+static int __load_default_rx_configuration(struct fmdrv_ops *fmdev)
+{
+	int ret;
+
+	ret = fm_rx_set_volume(fmdev, FM_DEFAULT_RX_VOLUME);
+	if (ret < 0)
+		return ret;
+
+	ret = fm_rx_set_rssi_threshold(fmdev, FM_DEFAULT_RSSI_THRESHOLD);
+	return ret;
+}
+
+/* Does FM power on sequence */
+static int fm_power_up(struct fmdrv_ops *fmdev, unsigned char fw_option)
+{
+	unsigned short payload, asic_id, asic_ver;
+	int resp_len, ret;
+	char fw_name[50];
+
+	if (fw_option >= FM_MODE_ENTRY_MAX) {
+		pr_err("(fmdrv): Invalid firmware download option\n");
+		return -EINVAL;
+	}
+
+	/*
+	 * Initialize FM common module. FM GPIO toggling is
+	 * taken care in Shared Transport driver.
+	 */
+	ret = fmc_prepare(fmdev);
+	if (ret < 0) {
+		pr_err("(fmdrv): Unable to prepare FM Common\n");
+		return ret;
+	}
+
+	payload = FM_ENABLE;
+	ret = fmc_send_cmd(fmdev, FM_POWER_MODE, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		goto rel;
+
+	/* Allow the chip to settle down in Channel-8 mode */
+	msleep(20);
+
+	ret = fmc_send_cmd(fmdev, ASIC_ID_GET, REG_RD, NULL,
+			sizeof(asic_id), &asic_id, &resp_len);
+	if (ret < 0)
+		goto rel;
+
+	ret = fmc_send_cmd(fmdev, ASIC_VER_GET, REG_RD, NULL,
+			sizeof(asic_ver), &asic_ver, &resp_len);
+	if (ret < 0)
+		goto rel;
+
+	pr_debug("(fmdrv): ASIC ID: 0x%x , ASIC Version: %d\n",
+		be16_to_cpu(asic_id), be16_to_cpu(asic_ver));
+
+	sprintf(fw_name, "%s_%x.%d.bts", FM_FMC_FW_FILE_START,
+		be16_to_cpu(asic_id), be16_to_cpu(asic_ver));
+	ret = fm_download_firmware(fmdev, fw_name);
+	if (ret < 0) {
+		pr_debug("(fmdrv): Failed to download firmware file %s\n",
+			fw_name);
+		goto rel;
+	}
+
+	sprintf(fw_name, "%s_%x.%d.bts", (fw_option == FM_MODE_RX) ?
+		FM_RX_FW_FILE_START : FM_TX_FW_FILE_START,
+		be16_to_cpu(asic_id), be16_to_cpu(asic_ver));
+	ret = fm_download_firmware(fmdev, fw_name);
+	if (ret < 0) {
+		pr_debug("(fmdrv): Failed to download firmware file %s\n",
+			fw_name);
+		goto rel;
+	} else
+		return ret;
+rel:
+	fmc_release(fmdev);
+
+	return ret;
+}
+
+/* Set FM Modes(TX, RX, OFF) */
+int fmc_set_mode(struct fmdrv_ops *fmdev, unsigned char fm_mode)
+{
+	int ret = 0;
+
+	if (fm_mode >= FM_MODE_ENTRY_MAX) {
+		pr_err("(fmdrv): Invalid FM mode\n");
+		return -EINVAL;
+	}
+	if (fmdev->curr_fmmode == fm_mode) {
+		pr_debug("(fmdrv): Already fm is in mode(%d)\n", fm_mode);
+		return ret;
+	}
+
+	switch (fm_mode) {
+	case FM_MODE_OFF:	/* OFF Mode */
+		ret = fm_power_down(fmdev);
+		if (ret < 0) {
+			pr_err("(fmdrv): Failed to set OFF mode\n");
+			return ret;
+		}
+		break;
+
+	case FM_MODE_TX:	/* TX Mode */
+	case FM_MODE_RX:	/* RX Mode */
+		/* Power down before switching to TX or RX mode */
+		if (fmdev->curr_fmmode != FM_MODE_OFF) {
+			ret = fm_power_down(fmdev);
+			if (ret < 0) {
+				pr_err("(fmdrv): Failed to set OFF mode\n");
+				return ret;
+			}
+			msleep(30);
+		}
+		ret = fm_power_up(fmdev, fm_mode);
+		if (ret < 0) {
+			pr_err("(fmdrv): Failed to load firmware\n");
+			return ret;
+		}
+	}
+	fmdev->curr_fmmode = fm_mode;
+
+	/* Set default configuration */
+	if (fmdev->curr_fmmode == FM_MODE_RX) {
+		pr_debug("(fmdrv): Loading default rx configuration..\n");
+		ret = __load_default_rx_configuration(fmdev);
+		if (ret < 0)
+			pr_err("(fmdrv): Failed to load default values\n");
+	}
+
+	return ret;
+}
+
+/* Returns current FM mode (TX, RX, OFF) */
+int fmc_get_mode(struct fmdrv_ops *fmdev, unsigned char *fmmode)
+{
+	if (!test_bit(FM_CORE_READY, &fmdev->flag)) {
+		pr_err("(fmdrv): FM core is not ready\n");
+		return -EPERM;
+	}
+	if (fmmode == NULL) {
+		pr_err("(fmdrv): Invalid memory\n");
+		return -ENOMEM;
+	}
+
+	*fmmode = fmdev->curr_fmmode;
+	return 0;
+}
+
+/* Called by ST layer when FM packet is available */
+static long fm_st_receive(void *arg, struct sk_buff *skb)
+{
+	struct fmdrv_ops *fmdev;
+
+	fmdev = (struct fmdrv_ops *)arg;
+
+	if (skb == NULL) {
+		pr_err("(fmdrv): Invalid SKB received from ST\n");
+		return -EFAULT;
+	}
+
+	if (skb->cb[0] != FM_PKT_LOGICAL_CHAN_NUMBER) {
+		pr_err("(fmdrv): Received SKB (%p) is not FM Channel 8 pkt\n",
+			skb);
+		return -EINVAL;
+	}
+
+	memcpy(skb_push(skb, 1), &skb->cb[0], 1);
+	skb_queue_tail(&fmdev->rx_q, skb);
+	tasklet_schedule(&fmdev->rx_task);
+
+	return 0;
+}
+
+/*
+ * Called by ST layer to indicate protocol registration completion
+ * status.
+ */
+static void fm_st_reg_comp_cb(void *arg, char data)
+{
+	struct fmdrv_ops *fmdev;
+
+	fmdev = (struct fmdrv_ops *)arg;
+	fmdev->streg_cbdata = data;
+	complete(&wait_for_fmdrv_reg_comp);
+}
+
+/*
+ * This function will be called from FM V4L2 open function.
+ * Register with ST driver and initialize driver data.
+ */
+int fmc_prepare(struct fmdrv_ops *fmdev)
+{
+	static struct st_proto_s fm_st_proto;
+	unsigned long timeleft;
+	int ret = 0;
+
+	if (test_bit(FM_CORE_READY, &fmdev->flag)) {
+		pr_debug("(fmdrv): FM Core is already up\n");
+		return ret;
+	}
+
+	memset(&fm_st_proto, 0, sizeof(fm_st_proto));
+	fm_st_proto.type = ST_FM;
+	fm_st_proto.recv = fm_st_receive;
+	fm_st_proto.match_packet = NULL;
+	fm_st_proto.reg_complete_cb = fm_st_reg_comp_cb;
+	fm_st_proto.write = NULL; /* TI ST driver will fill write pointer */
+	fm_st_proto.priv_data = fmdev;
+
+	ret = st_register(&fm_st_proto);
+	if (ret == -EINPROGRESS) {
+		init_completion(&wait_for_fmdrv_reg_comp);
+		fmdev->streg_cbdata = -EINPROGRESS;
+		pr_debug("(fmdrv): %s waiting for ST reg completion signal\n",
+			__func__);
+
+		timeleft =
+		wait_for_completion_timeout(&wait_for_fmdrv_reg_comp,
+		FM_ST_REGISTER_TIMEOUT);
+
+		if (!timeleft) {
+			pr_err("(fmdrv): Timeout(%d sec), didn't get reg "
+			"completion signal from ST\n",
+			jiffies_to_msecs(FM_ST_REGISTER_TIMEOUT) / 1000);
+			return -ETIMEDOUT;
+		}
+		if (fmdev->streg_cbdata != 0) {
+			pr_err("(fmdrv): ST reg comp CB called with error "
+			"status %d\n", fmdev->streg_cbdata);
+			return -EAGAIN;
+		}
+		ret = 0;
+	} else if (ret == -1) {
+		pr_err("(fmdrv): st_register failed %d\n", ret);
+		return -EAGAIN;
+	}
+
+	if (fm_st_proto.write != NULL) {
+		g_st_write = fm_st_proto.write;
+	} else {
+		pr_err("(fmdrv): Failed to get ST write func pointer\n");
+		ret = st_unregister(ST_FM);
+		if (ret < 0)
+			pr_err("(fmdrv): st_unregister failed %d\n", ret);
+		return -EAGAIN;
+	}
+
+	spin_lock_init(&fmdev->rds_buff_lock);
+	spin_lock_init(&fmdev->resp_skb_lock);
+
+	/* Initialize TX queue and TX tasklet */
+	skb_queue_head_init(&fmdev->tx_q);
+	tasklet_init(&fmdev->tx_task, __send_tasklet, (unsigned long)fmdev);
+
+	/* Initialize RX Queue and RX tasklet */
+	skb_queue_head_init(&fmdev->rx_q);
+	tasklet_init(&fmdev->rx_task, __recv_tasklet, (unsigned long)fmdev);
+
+	fmdev->irq_info.stage_index = 0;
+	atomic_set(&fmdev->tx_cnt, 1);
+	fmdev->response_completion = NULL;
+
+	init_timer(&fmdev->irq_info.int_timeout_timer);
+	fmdev->irq_info.int_timeout_timer.function =
+	    &__int_timeout_handler;
+	fmdev->irq_info.int_timeout_timer.data = (unsigned long)fmdev;
+	fmdev->irq_info.mask =
+	    FM_MAL_EVENT /*| FM_STIC_EVENT <<Enable this later>> */ ;
+
+	/* Region info */
+	memcpy(&fmdev->rx.region, &region_configs[default_radio_region],
+	       sizeof(struct region_info));
+
+	fmdev->rx.curr_mute_mode = FM_MUTE_OFF;
+	fmdev->rx.curr_rf_depend_mute = FM_RX_RF_DEPENDENT_MUTE_OFF;
+	fmdev->rx.rds.flag = FM_RDS_DISABLE;
+	fmdev->rx.curr_freq = FM_UNDEFINED_FREQ;
+	fmdev->rx.rds_mode = FM_RDS_SYSTEM_RDS;
+	fmdev->rx.af_mode = FM_RX_RDS_AF_SWITCH_MODE_OFF;
+	fmdev->irq_info.irq_service_timeout_retry = 0;
+
+	fm_rx_reset_rds_cache(fmdev);
+	init_waitqueue_head(&fmdev->rx.rds.read_queue);
+
+	fm_rx_reset_curr_station_info(fmdev);
+	set_bit(FM_CORE_READY, &fmdev->flag);
+
+	return ret;
+}
+
+/*
+ * This function will be called from FM V4L2 release function.
+ * Unregister from ST driver.
+ */
+int fmc_release(struct fmdrv_ops *fmdev)
+{
+	int ret;
+
+	if (!test_bit(FM_CORE_READY, &fmdev->flag)) {
+		pr_debug("(fmdrv): FM Core is already down\n");
+		return 0;
+	}
+	/* Sevice pending read */
+	wake_up_interruptible(&fmdev->rx.rds.read_queue);
+
+	tasklet_kill(&fmdev->tx_task);
+	tasklet_kill(&fmdev->rx_task);
+
+	skb_queue_purge(&fmdev->tx_q);
+	skb_queue_purge(&fmdev->rx_q);
+
+	fmdev->response_completion = NULL;
+	fmdev->rx.curr_freq = 0;
+
+	ret = st_unregister(ST_FM);
+	if (ret < 0)
+		pr_err("(fmdrv): Failed to de-register FM from ST %d\n", ret);
+	else
+		pr_debug("(fmdrv): Successfully unregistered from ST\n");
+
+	clear_bit(FM_CORE_READY, &fmdev->flag);
+	return ret;
+}
+
+/*
+ * Module init function. Ask FM V4L module to register video device.
+ * Allocate memory for FM driver context and RX RDS buffer.
+ */
+static int __init fm_drv_init(void)
+{
+	struct fmdrv_ops *fmdev = NULL;
+	int ret = -ENOMEM;
+
+	pr_debug("(fmdrv): FM driver version %s\n", FM_DRV_VERSION);
+
+	fmdev = kzalloc(sizeof(struct fmdrv_ops), GFP_KERNEL);
+	if (NULL == fmdev) {
+		pr_err("(fmdrv): Can't allocate operation structure memory\n");
+		return ret;
+	}
+	fmdev->rx.rds.buf_size = default_rds_buf * FM_RDS_BLOCK_SIZE;
+	fmdev->rx.rds.buffer = kzalloc(fmdev->rx.rds.buf_size, GFP_KERNEL);
+	if (NULL == fmdev->rx.rds.buffer) {
+		pr_err("(fmdrv): Can't allocate rds ring buffer\n");
+		goto rel_dev;
+	}
+
+	ret = fm_v4l2_init_video_device(fmdev, radio_nr);
+	if (ret < 0)
+		goto rel_rdsbuf;
+
+	fmdev->irq_info.fm_int_handlers = g_IntHandlerTable;
+	fmdev->curr_fmmode = FM_MODE_OFF;
+	fmdev->tx_data.pwr_lvl = FM_PWR_LVL_DEF;
+	fmdev->tx_data.preemph = FM_TX_PREEMPH_50US;
+	return ret;
+
+rel_rdsbuf:
+	kfree(fmdev->rx.rds.buffer);
+rel_dev:
+	kfree(fmdev);
+
+	return ret;
+}
+
+/* Module exit function. Ask FM V4L module to unregister video device */
+static void __exit fm_drv_exit(void)
+{
+	struct fmdrv_ops *fmdev = NULL;
+
+	fmdev = fm_v4l2_deinit_video_device();
+	if (fmdev != NULL) {
+		kfree(fmdev->rx.rds.buffer);
+		kfree(fmdev);
+	}
+}
+
+module_init(fm_drv_init);
+module_exit(fm_drv_exit);
+
+/* ------------- Module Info ------------- */
+MODULE_AUTHOR("Raja Mani <raja_mani@ti.com>");
+MODULE_DESCRIPTION("FM Driver for Connectivity chip of Texas Instruments. "
+		   FM_DRV_VERSION);
+MODULE_VERSION(FM_DRV_VERSION);
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/radio/wl128x/fmdrv_common.h b/drivers/media/radio/wl128x/fmdrv_common.h
new file mode 100644
index 0000000..d76550d
--- /dev/null
+++ b/drivers/media/radio/wl128x/fmdrv_common.h
@@ -0,0 +1,402 @@
+/*
+ *  FM Driver for Connectivity chip of Texas Instruments.
+ *  FM Common module header file
+ *
+ *  Copyright (C) 2010 Texas Instruments
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef _FMDRV_COMMON_H
+#define _FMDRV_COMMON_H
+
+#define FM_ST_REGISTER_TIMEOUT   msecs_to_jiffies(6000)	/* 6 sec */
+#define FM_PKT_LOGICAL_CHAN_NUMBER  0x08   /* Logical channel 8 */
+
+#define REG_RD       0x1
+#define REG_WR      0x0
+
+struct fm_reg_table {
+	unsigned char opcode;
+	unsigned char type;
+	char *name;
+};
+
+#define STEREO_GET               0
+#define RSSI_LVL_GET             1
+#define IF_COUNT_GET             2
+#define FLAG_GET                 3
+#define RDS_SYNC_GET             4
+#define RDS_DATA_GET             5
+#define FREQ_SET                 10
+#define AF_FREQ_SET              11
+#define MOST_MODE_SET            12
+#define MOST_BLEND_SET           13
+#define DEMPH_MODE_SET           14
+#define SEARCH_LVL_SET           15
+#define BAND_SET                 16
+#define MUTE_STATUS_SET          17
+#define RDS_PAUSE_LVL_SET        18
+#define RDS_PAUSE_DUR_SET        19
+#define RDS_MEM_SET              20
+#define RDS_BLK_B_SET            21
+#define RDS_MSK_B_SET            22
+#define RDS_PI_MASK_SET          23
+#define RDS_PI_SET               24
+#define RDS_SYSTEM_SET           25
+#define INT_MASK_SET             26
+#define SEARCH_DIR_SET           27
+#define VOLUME_SET               28
+#define AUDIO_ENABLE_SET         29
+#define PCM_MODE_SET             30
+#define I2S_MODE_CONFIG_SET      31
+#define POWER_SET                32
+#define INTX_CONFIG_SET          33
+#define PULL_EN_SET              34
+#define HILO_SET                 35
+#define SWITCH2FREF              36
+#define FREQ_DRIFT_REPORT        37
+
+#define PCE_GET                  40
+#define FIRM_VER_GET             41
+#define ASIC_VER_GET             42
+#define ASIC_ID_GET              43
+#define MAN_ID_GET               44
+#define TUNER_MODE_SET           45
+#define STOP_SEARCH              46
+#define RDS_CNTRL_SET            47
+
+#define WRITE_HARDWARE_REG       100
+#define CODE_DOWNLOAD            101
+#define RESET                    102
+
+#define FM_POWER_MODE            254
+#define FM_INTERRUPT             255
+
+/* Transmitter API */
+
+#define CHANL_SET                55
+#define CHANL_BW_SET		56
+#define REF_SET                  57
+#define POWER_ENB_SET            90
+#define POWER_ATT_SET            58
+#define POWER_LEV_SET            59
+#define AUDIO_DEV_SET            60
+#define PILOT_DEV_SET            61
+#define RDS_DEV_SET              62
+#define TX_BAND_SET              65
+#define PUPD_SET                 91
+#define AUDIO_IO_SET             63
+#define PREMPH_SET               64
+#define MONO_SET                 66
+#define MUTE                     92
+#define MPX_LMT_ENABLE           67
+#define PI_SET                   93
+#define ECC_SET                  69
+#define PTY                      70
+#define AF                       71
+#define DISPLAY_MODE             74
+#define RDS_REP_SET              77
+#define RDS_CONFIG_DATA_SET      98
+#define RDS_DATA_SET             99
+#define RDS_DATA_ENB             94
+#define TA_SET                   78
+#define TP_SET                   79
+#define DI_SET                   80
+#define MS_SET                   81
+#define PS_SCROLL_SPEED          82
+#define TX_AUDIO_LEVEL_TEST      96
+#define TX_AUDIO_LEVEL_TEST_THRESHOLD    73
+#define TX_AUDIO_INPUT_LEVEL_RANGE_SET   54
+#define RX_ANTENNA_SELECT        87
+#define I2C_DEV_ADDR_SET         86
+#define REF_ERR_CALIB_PARAM_SET          88
+#define REF_ERR_CALIB_PERIODICITY_SET    89
+#define SOC_INT_TRIGGER                  52
+#define SOC_AUDIO_PATH_SET               83
+#define SOC_PCMI_OVERRIDE                84
+#define SOC_I2S_OVERRIDE         85
+#define RSSI_BLOCK_SCAN_FREQ_SET 95
+#define RSSI_BLOCK_SCAN_START    97
+#define RSSI_BLOCK_SCAN_DATA_GET  5
+#define READ_FMANT_TUNE_VALUE            104
+
+/* SKB helpers */
+struct fm_skb_cb {
+	__u8 fm_opcode;
+	struct completion *completion;
+};
+
+#define fm_cb(skb) ((struct fm_skb_cb *)(skb->cb))
+
+/* FM Channel-8 command message format */
+struct fm_cmd_msg_hdr {
+	__u8 header;		/* Logical Channel-8 */
+	__u8 len;		/* Number of bytes follows */
+	__u8 fm_opcode;		/* FM Opcode */
+	__u8 rd_wr;		/* Read/Write command */
+	__u8 dlen;		/* Length of payload */
+} __attribute__ ((packed));
+
+#define FM_CMD_MSG_HDR_SIZE    5	/* sizeof(struct fm_cmd_msg_hdr) */
+
+/* FM Channel-8 event messgage format */
+struct fm_event_msg_hdr {
+	__u8 header;		/* Logical Channel-8 */
+	__u8 len;		/* Number of bytes follows */
+	__u8 status;		/* Event status */
+	__u8 num_fm_hci_cmds;	/* Number of pkts the host allowed to send */
+	__u8 fm_opcode;		/* FM Opcode */
+	__u8 rd_wr;		/* Read/Write command */
+	__u8 dlen;		/* Length of payload */
+} __attribute__ ((packed));
+
+#define FM_EVT_MSG_HDR_SIZE     7	/* sizeof(struct fm_event_msg_hdr) */
+
+/* TI's magic number in firmware file */
+#define FM_FW_FILE_HEADER_MAGIC	     0x42535442
+
+#define FM_ENABLE   1
+#define FM_DISABLE  0
+
+/* FLAG_GET register bits */
+#define FM_FR_EVENT		(1 << 0)
+#define FM_BL_EVENT		(1 << 1)
+#define FM_RDS_EVENT		(1 << 2)
+#define FM_BBLK_EVENT		(1 << 3)
+#define FM_LSYNC_EVENT		(1 << 4)
+#define FM_LEV_EVENT		(1 << 5)
+#define FM_IFFR_EVENT		(1 << 6)
+#define FM_PI_EVENT		(1 << 7)
+#define FM_PD_EVENT		(1 << 8)
+#define FM_STIC_EVENT		(1 << 9)
+#define FM_MAL_EVENT		(1 << 10)
+#define FM_POW_ENB_EVENT	(1 << 11)
+
+/*
+ * Firmware files of FM. ASIC ID and ASIC version will be appened to this,
+ * later.
+ */
+#define FM_FMC_FW_FILE_START      ("fmc_ch8")
+#define FM_RX_FW_FILE_START       ("fm_rx_ch8")
+#define FM_TX_FW_FILE_START       ("fm_tx_ch8")
+
+#define FM_UNDEFINED_FREQ		   0xFFFFFFFF
+
+/* Band types */
+#define FM_BAND_EUROPE_US	0
+#define FM_BAND_JAPAN		1
+
+/* Seek directions */
+#define FM_SEARCH_DIRECTION_DOWN	0
+#define FM_SEARCH_DIRECTION_UP		1
+
+/* Tunner modes */
+#define FM_TUNER_STOP_SEARCH_MODE	0
+#define FM_TUNER_PRESET_MODE		1
+#define FM_TUNER_AUTONOMOUS_SEARCH_MODE	2
+#define FM_TUNER_AF_JUMP_MODE		3
+
+/* Min and Max volume */
+#define FM_RX_VOLUME_MIN	0
+#define FM_RX_VOLUME_MAX	70
+
+/* Volume gain step */
+#define FM_RX_VOLUME_GAIN_STEP	0x370
+
+/* Mute modes */
+#define FM_MUTE_OFF		0
+#define	FM_MUTE_ON		1
+#define	FM_MUTE_ATTENUATE	2
+
+#define FM_RX_MUTE_UNMUTE_MODE		0x00
+#define FM_RX_MUTE_RF_DEP_MODE		0x01
+#define FM_RX_MUTE_AC_MUTE_MODE		0x02
+#define FM_RX_MUTE_HARD_MUTE_LEFT_MODE	0x04
+#define FM_RX_MUTE_HARD_MUTE_RIGHT_MODE	0x08
+#define FM_RX_MUTE_SOFT_MUTE_FORCE_MODE	0x10
+
+/* RF dependent mute mode */
+#define FM_RX_RF_DEPENDENT_MUTE_ON	1
+#define FM_RX_RF_DEPENDENT_MUTE_OFF	0
+
+/* RSSI threshold min and max */
+#define FM_RX_RSSI_THRESHOLD_MIN	-128
+#define FM_RX_RSSI_THRESHOLD_MAX	127
+
+/* Stereo/Mono mode */
+#define FM_STEREO_MODE		0
+#define FM_MONO_MODE		1
+#define FM_STEREO_SOFT_BLEND	1
+
+/* FM RX De-emphasis filter modes */
+#define FM_RX_EMPHASIS_FILTER_50_USEC	0
+#define FM_RX_EMPHASIS_FILTER_75_USEC	1
+
+/* FM RDS modes */
+#define FM_RDS_DISABLE	0
+#define FM_RDS_ENABLE	1
+
+#define FM_NO_PI_CODE	0
+
+/* FM and RX RDS block enable/disable  */
+#define FM_RX_POWER_SET_FM_ON_RDS_OFF		0x1
+#define FM_RX_POWET_SET_FM_AND_RDS_BLK_ON	0x3
+#define FM_RX_POWET_SET_FM_AND_RDS_BLK_OFF	0x0
+
+/* RX RDS */
+#define FM_RX_RDS_FLUSH_FIFO		0x1
+#define FM_RX_RDS_FIFO_THRESHOLD	64	/* tuples */
+#define FM_RDS_BLOCK_SIZE		3	/* 3 bytes */
+
+/* RDS block types */
+#define FM_RDS_BLOCK_A		0
+#define FM_RDS_BLOCK_B		1
+#define FM_RDS_BLOCK_C		2
+#define FM_RDS_BLOCK_Ctag	3
+#define FM_RDS_BLOCK_D		4
+#define FM_RDS_BLOCK_E		5
+
+#define FM_RDS_BLOCK_INDEX_A		0
+#define FM_RDS_BLOCK_INDEX_B		1
+#define FM_RDS_BLOCK_INDEX_C		2
+#define FM_RDS_BLOCK_INDEX_D		3
+#define FM_RDS_BLOCK_INDEX_UNKNOWN	0xF0
+
+#define FM_RDS_STATUS_ERROR_MASK	0x18
+
+/*
+ * Represents an RDS group type & version.
+ * There are 15 groups, each group has 2 versions: A and B.
+ */
+#define FM_RDS_GROUP_TYPE_MASK_0A	    ((unsigned long)1<<0)
+#define FM_RDS_GROUP_TYPE_MASK_0B	    ((unsigned long)1<<1)
+#define FM_RDS_GROUP_TYPE_MASK_1A	    ((unsigned long)1<<2)
+#define FM_RDS_GROUP_TYPE_MASK_1B	    ((unsigned long)1<<3)
+#define FM_RDS_GROUP_TYPE_MASK_2A	    ((unsigned long)1<<4)
+#define FM_RDS_GROUP_TYPE_MASK_2B	    ((unsigned long)1<<5)
+#define FM_RDS_GROUP_TYPE_MASK_3A	    ((unsigned long)1<<6)
+#define FM_RDS_GROUP_TYPE_MASK_3B           ((unsigned long)1<<7)
+#define FM_RDS_GROUP_TYPE_MASK_4A	    ((unsigned long)1<<8)
+#define FM_RDS_GROUP_TYPE_MASK_4B	    ((unsigned long)1<<9)
+#define FM_RDS_GROUP_TYPE_MASK_5A	    ((unsigned long)1<<10)
+#define FM_RDS_GROUP_TYPE_MASK_5B	    ((unsigned long)1<<11)
+#define FM_RDS_GROUP_TYPE_MASK_6A	    ((unsigned long)1<<12)
+#define FM_RDS_GROUP_TYPE_MASK_6B	    ((unsigned long)1<<13)
+#define FM_RDS_GROUP_TYPE_MASK_7A	    ((unsigned long)1<<14)
+#define FM_RDS_GROUP_TYPE_MASK_7B	    ((unsigned long)1<<15)
+#define FM_RDS_GROUP_TYPE_MASK_8A           ((unsigned long)1<<16)
+#define FM_RDS_GROUP_TYPE_MASK_8B	    ((unsigned long)1<<17)
+#define FM_RDS_GROUP_TYPE_MASK_9A	    ((unsigned long)1<<18)
+#define FM_RDS_GROUP_TYPE_MASK_9B	    ((unsigned long)1<<19)
+#define FM_RDS_GROUP_TYPE_MASK_10A	    ((unsigned long)1<<20)
+#define FM_RDS_GROUP_TYPE_MASK_10B	    ((unsigned long)1<<21)
+#define FM_RDS_GROUP_TYPE_MASK_11A	    ((unsigned long)1<<22)
+#define FM_RDS_GROUP_TYPE_MASK_11B	    ((unsigned long)1<<23)
+#define FM_RDS_GROUP_TYPE_MASK_12A	    ((unsigned long)1<<24)
+#define FM_RDS_GROUP_TYPE_MASK_12B	    ((unsigned long)1<<25)
+#define FM_RDS_GROUP_TYPE_MASK_13A	    ((unsigned long)1<<26)
+#define FM_RDS_GROUP_TYPE_MASK_13B	    ((unsigned long)1<<27)
+#define FM_RDS_GROUP_TYPE_MASK_14A	    ((unsigned long)1<<28)
+#define FM_RDS_GROUP_TYPE_MASK_14B	    ((unsigned long)1<<29)
+#define FM_RDS_GROUP_TYPE_MASK_15A	    ((unsigned long)1<<30)
+#define FM_RDS_GROUP_TYPE_MASK_15B	    ((unsigned long)1<<31)
+
+/* RX Alternate Frequency info */
+#define FM_RDS_MIN_AF		          1
+#define FM_RDS_MAX_AF		        204
+#define FM_RDS_MAX_AF_JAPAN	        140
+#define FM_RDS_1_AF_FOLLOWS	        225
+#define FM_RDS_25_AF_FOLLOWS	        249
+
+/* RDS system type (RDS/RBDS) */
+#define FM_RDS_SYSTEM_RDS		0
+#define FM_RDS_SYSTEM_RBDS		1
+
+/* AF on/off */
+#define FM_RX_RDS_AF_SWITCH_MODE_ON	1
+#define FM_RX_RDS_AF_SWITCH_MODE_OFF	0
+
+/* Retry count when interrupt process goes wrong */
+#define FM_IRQ_TIMEOUT_RETRY_MAX	5	/* 5 times */
+
+/* Audio IO set values */
+#define FM_RX_FM_AUDIO_ENABLE_I2S	0x01
+#define FM_RX_FM_AUDIO_ENABLE_ANALOG	0x02
+#define FM_RX_FM_AUDIO_ENABLE_I2S_AND_ANALOG	0x03
+#define FM_RX_FM_AUDIO_ENABLE_DISABLE	0x00
+
+/* HI/LO set values */
+#define FM_RX_IFFREQ_TO_HI_SIDE		0x0
+#define FM_RX_IFFREQ_TO_LO_SIDE		0x1
+#define FM_RX_IFFREQ_HILO_AUTOMATIC	0x2
+
+/*
+ * Default RX mode configuration. Chip will be configured
+ * with this default values after loading RX firmware.
+ */
+#define FM_DEFAULT_RX_VOLUME		10
+#define FM_DEFAULT_RSSI_THRESHOLD	3
+
+/* Range for TX power level in units for dB/uV */
+#define FM_PWR_LVL_LOW			91
+#define FM_PWR_LVL_HIGH			122
+
+/* Chip specific default TX power level value */
+#define FM_PWR_LVL_DEF			4
+
+/* FM TX Pre-emphasis filter values */
+#define FM_TX_PREEMPH_OFF		1
+#define FM_TX_PREEMPH_50US		0
+#define FM_TX_PREEMPH_75US		2
+
+/* FM TX antenna impedence values */
+#define FM_TX_ANT_IMP_50		0
+#define FM_TX_ANT_IMP_200		1
+#define FM_TX_ANT_IMP_500		2
+
+/* Functions exported by FM common sub-module */
+int fmc_prepare(struct fmdrv_ops *);
+int fmc_release(struct fmdrv_ops *);
+
+void fmc_update_region_info(struct fmdrv_ops *, unsigned char);
+int fmc_send_cmd(struct fmdrv_ops *, unsigned char, unsigned short int,
+				void *, int, void *, int *);
+int fmc_is_rds_data_available(struct fmdrv_ops *, struct file *,
+				struct poll_table_struct *);
+int fmc_transfer_rds_from_internal_buff(struct fmdrv_ops *, struct file *,
+					char __user *, size_t);
+
+int fmc_set_frequency(struct fmdrv_ops *, unsigned int);
+int fmc_set_mode(struct fmdrv_ops *, unsigned char);
+int fmc_set_region(struct fmdrv_ops *, unsigned char);
+int fmc_set_mute_mode(struct fmdrv_ops *, unsigned char);
+int fmc_set_stereo_mono(struct fmdrv_ops *, unsigned short);
+int fmc_set_rds_mode(struct fmdrv_ops *, unsigned char);
+
+int fmc_get_frequency(struct fmdrv_ops *, unsigned int *);
+int fmc_get_region(struct fmdrv_ops *, unsigned char *);
+int fmc_get_mode(struct fmdrv_ops *, unsigned char *);
+
+/*
+ * channel spacing
+ */
+#define FM_CHANNEL_SPACING_50KHZ 1
+#define FM_CHANNEL_SPACING_100KHZ 2
+#define FM_CHANNEL_SPACING_200KHZ 4
+#define FM_FREQ_MUL 50
+
+#endif
+
-- 
1.5.6.3

[PATCH v7 4/7] drivers:media:radio: wl128x: FM driver RX sources

[manjunatha_halli]

From: Manjunatha Halli <manjunatha_halli@ti.com>

This has implementation for FM RX functionality.
It communicates with FM V4l2 module and FM common module.

Signed-off-by: Manjunatha Halli <manjunatha_halli@ti.com>
---
 drivers/media/radio/wl128x/fmdrv_rx.c |  904 +++++++++++++++++++++++++++++++++
 drivers/media/radio/wl128x/fmdrv_rx.h |   59 +++
 2 files changed, 963 insertions(+), 0 deletions(-)
 create mode 100644 drivers/media/radio/wl128x/fmdrv_rx.c
 create mode 100644 drivers/media/radio/wl128x/fmdrv_rx.h

diff --git a/drivers/media/radio/wl128x/fmdrv_rx.c b/drivers/media/radio/wl128x/fmdrv_rx.c
new file mode 100644
index 0000000..c0a29e7
--- /dev/null
+++ b/drivers/media/radio/wl128x/fmdrv_rx.c
@@ -0,0 +1,904 @@
+/*
+ *  FM Driver for Connectivity chip of Texas Instruments.
+ *  This sub-module of FM driver implements FM RX functionality.
+ *
+ *  Copyright (C) 2010 Texas Instruments
+ *  Author: Raja Mani <raja_mani@ti.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include "fmdrv.h"
+#include "fmdrv_common.h"
+#include "fmdrv_rx.h"
+
+void fm_rx_reset_rds_cache(struct fmdrv_ops *fmdev)
+{
+	fmdev->rx.rds.flag = FM_RDS_DISABLE;
+	fmdev->rx.rds.last_block_index = 0;
+	fmdev->rx.rds.wr_index = 0;
+	fmdev->rx.rds.rd_index = 0;
+
+	if (fmdev->rx.af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON)
+		fmdev->irq_info.mask |= FM_LEV_EVENT;
+}
+
+void fm_rx_reset_curr_station_info(struct fmdrv_ops *fmdev)
+{
+	fmdev->rx.cur_station_info.picode = FM_NO_PI_CODE;
+	fmdev->rx.cur_station_info.no_of_items_in_afcache = 0;
+	fmdev->rx.cur_station_info.af_list_max = 0;
+}
+
+int fm_rx_set_frequency(struct fmdrv_ops *fmdev, unsigned int freq_to_set)
+{
+	unsigned long timeleft;
+	unsigned short payload, curr_frq, frq_index, intr_flag;
+	unsigned int curr_frq_in_khz;
+	int ret, resp_len;
+
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	if (freq_to_set < fmdev->rx.region.bottom_frequency ||
+		freq_to_set > fmdev->rx.region.top_frequency) {
+		pr_err("(fmdrv): Invalid frequency %d\n", freq_to_set);
+		return -EINVAL;
+	}
+
+	/* Set audio enable */
+	payload = FM_RX_FM_AUDIO_ENABLE_I2S_AND_ANALOG;
+
+	ret = fmc_send_cmd(fmdev, AUDIO_ENABLE_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	/* Set hilo to automatic selection */
+	payload = FM_RX_IFFREQ_HILO_AUTOMATIC;
+	ret = fmc_send_cmd(fmdev, HILO_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	/* Calculate frequency index to write */
+	frq_index = (freq_to_set - fmdev->rx.region.bottom_frequency) /
+				FM_FREQ_MUL;
+
+	/* Set frequency index */
+	payload = frq_index;
+	ret = fmc_send_cmd(fmdev, FREQ_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	/* Read flags - just to clear any pending interrupts if we had */
+	ret = fmc_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, 2,
+			NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	/* Enable FR, BL interrupts */
+	intr_flag = fmdev->irq_info.mask;
+	fmdev->irq_info.mask = (FM_FR_EVENT | FM_BL_EVENT);
+	payload = fmdev->irq_info.mask;
+	ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	/* Start tune */
+	payload = FM_TUNER_PRESET_MODE;
+	ret = fmc_send_cmd(fmdev, TUNER_MODE_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	/* Wait for tune ended interrupt */
+	init_completion(&fmdev->maintask_completion);
+	timeleft = wait_for_completion_timeout(&fmdev->maintask_completion,
+					       FM_DRV_TX_TIMEOUT);
+	if (!timeleft) {
+		pr_err("(fmdrv): Timeout(%d sec),didn't get tune ended int\n",
+			   jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000);
+		return -ETIMEDOUT;
+	}
+
+	/* Read freq back to confirm */
+	ret = fmc_send_cmd(fmdev, FREQ_SET, REG_RD, NULL, 2,
+			&curr_frq, &resp_len);
+	if (ret < 0)
+		return ret;
+
+	curr_frq = be16_to_cpu(curr_frq);
+	curr_frq_in_khz = (fmdev->rx.region.bottom_frequency
+		+ ((unsigned int)curr_frq * FM_FREQ_MUL));
+
+	/* Re-enable default FM interrupts */
+	fmdev->irq_info.mask = intr_flag;
+	payload = fmdev->irq_info.mask;
+	ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
+		sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	if (curr_frq_in_khz != freq_to_set) {
+		pr_info("(fmdrv): Frequency is set to (%d) but"
+			   " requested frequency is (%d)\n", curr_frq_in_khz,
+			   freq_to_set);
+	}
+
+	/* Update local cache  */
+	fmdev->rx.curr_freq = curr_frq_in_khz;
+
+	/* Reset RDS cache and current station pointers */
+	fm_rx_reset_rds_cache(fmdev);
+	fm_rx_reset_curr_station_info(fmdev);
+
+	/* Do we need to reset anything else? */
+
+	return ret;
+}
+
+static int fm_rx_set_channel_spacing(struct fmdrv_ops *fmdev,
+		unsigned int spacing)
+{
+	unsigned short payload;
+	int ret;
+
+	if (spacing == 0)
+		spacing = FM_CHANNEL_SPACING_50KHZ;
+	else if (spacing > 0 && spacing <= 50000)
+		spacing = FM_CHANNEL_SPACING_50KHZ;
+	else if (spacing > 50000 && spacing <= 100000)
+		spacing = FM_CHANNEL_SPACING_100KHZ;
+	else
+		spacing = FM_CHANNEL_SPACING_200KHZ;
+
+	/* set channel spacing */
+	payload = spacing;
+	ret = fmc_send_cmd(fmdev, CHANL_BW_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	fmdev->rx.region.channel_spacing = spacing * FM_FREQ_MUL;
+
+	return ret;
+}
+
+int fm_rx_seek(struct fmdrv_ops *fmdev, unsigned int seek_upward,
+		unsigned int wrap_around, unsigned int spacing)
+{
+	int resp_len;
+	unsigned short curr_frq, next_frq, last_frq;
+	unsigned short payload, int_reason, intr_flag;
+	char offset, spacing_index;
+	unsigned long timeleft;
+	int ret;
+
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	/* Set channel spacing */
+	ret = fm_rx_set_channel_spacing(fmdev, spacing);
+	if (ret < 0) {
+		pr_err("(fmdrv): Failed to set channel spacing\n");
+		return ret;
+	}
+
+	/* Read the current frequency from chip */
+	ret = fmc_send_cmd(fmdev, FREQ_SET, REG_RD, NULL,
+			sizeof(curr_frq), &curr_frq, &resp_len);
+	if (ret < 0)
+		return ret;
+
+	curr_frq = be16_to_cpu(curr_frq);
+	last_frq = (fmdev->rx.region.top_frequency -
+	   fmdev->rx.region.bottom_frequency) / FM_FREQ_MUL;
+
+	/* Check the offset in order to be aligned to the channel spacing*/
+	spacing_index = fmdev->rx.region.channel_spacing / FM_FREQ_MUL;
+	offset = curr_frq % spacing_index;
+
+	next_frq = seek_upward ? curr_frq + spacing_index /* Seek Up */ :
+				curr_frq - spacing_index /* Seek Down */ ;
+
+	/*
+	 * Add or subtract offset in order to stay aligned to the channel
+	 * spacing.
+	 */
+	if ((short)next_frq < 0)
+		next_frq = last_frq - offset;
+	else if (next_frq > last_frq)
+		next_frq = 0 + offset;
+
+again:
+	/* Set calculated next frequency to perform seek */
+	payload = next_frq;
+	ret = fmc_send_cmd(fmdev, FREQ_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	/* Set search direction (0:Seek Down, 1:Seek Up) */
+	payload = (seek_upward ? FM_SEARCH_DIRECTION_UP :
+					FM_SEARCH_DIRECTION_DOWN);
+	ret = fmc_send_cmd(fmdev, SEARCH_DIR_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	/* Read flags - just to clear any pending interrupts if we had */
+	ret = fmc_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, 2,
+			NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	/* Enable FR, BL interrupts */
+	intr_flag = fmdev->irq_info.mask;
+	fmdev->irq_info.mask = (FM_FR_EVENT | FM_BL_EVENT);
+	payload = fmdev->irq_info.mask;
+	ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	/* Start seek */
+	payload = FM_TUNER_AUTONOMOUS_SEARCH_MODE;
+	ret = fmc_send_cmd(fmdev, TUNER_MODE_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	/* Wait for tune ended/band limit reached interrupt */
+	init_completion(&fmdev->maintask_completion);
+	timeleft = wait_for_completion_timeout(&fmdev->maintask_completion,
+					       FM_DRV_RX_SEEK_TIMEOUT);
+	if (!timeleft) {
+		pr_err("(fmdrv): Timeout(%d sec),didn't get tune ended int\n",
+			   jiffies_to_msecs(FM_DRV_RX_SEEK_TIMEOUT) / 1000);
+		return -ETIMEDOUT;
+	}
+
+	int_reason = fmdev->irq_info.flag & (FM_TUNE_COMPLETE | FM_BAND_LIMIT);
+
+	/* Re-enable default FM interrupts */
+	fmdev->irq_info.mask = intr_flag;
+	payload = fmdev->irq_info.mask;
+	ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	if (int_reason & FM_BL_EVENT) {
+		if (wrap_around == 0) {
+			fmdev->rx.curr_freq = seek_upward ?
+				fmdev->rx.region.top_frequency :
+				fmdev->rx.region.bottom_frequency;
+		} else {
+			fmdev->rx.curr_freq = seek_upward ?
+				fmdev->rx.region.bottom_frequency :
+				fmdev->rx.region.top_frequency;
+			/* Calculate frequency index to write */
+			next_frq = (fmdev->rx.curr_freq -
+					fmdev->rx.region.bottom_frequency) /
+					FM_FREQ_MUL;
+			goto again;
+		}
+	} else {
+		/* Read freq to know where operation tune operation stopped */
+		ret = fmc_send_cmd(fmdev, FREQ_SET, REG_RD, NULL, 2,
+				&curr_frq, &resp_len);
+		if (ret < 0)
+			return ret;
+
+		curr_frq = be16_to_cpu(curr_frq);
+		fmdev->rx.curr_freq = (fmdev->rx.region.bottom_frequency +
+				((unsigned int)curr_frq * FM_FREQ_MUL));
+
+	}
+	/* Reset RDS cache and current station pointers */
+	fm_rx_reset_rds_cache(fmdev);
+	fm_rx_reset_curr_station_info(fmdev);
+
+	return ret;
+}
+
+int fm_rx_set_volume(struct fmdrv_ops *fmdev, unsigned short vol_to_set)
+{
+	unsigned short payload;
+	int ret;
+
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	if (vol_to_set < FM_RX_VOLUME_MIN || vol_to_set > FM_RX_VOLUME_MAX) {
+		pr_err("(fmdrv): Volume is not within(%d-%d) range\n",
+			   FM_RX_VOLUME_MIN, FM_RX_VOLUME_MAX);
+		return -EINVAL;
+	}
+	vol_to_set *= FM_RX_VOLUME_GAIN_STEP;
+
+	payload = vol_to_set;
+	ret = fmc_send_cmd(fmdev, VOLUME_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	fmdev->rx.curr_volume = vol_to_set;
+	return ret;
+}
+
+/* Get volume */
+int fm_rx_get_volume(struct fmdrv_ops *fmdev, unsigned short *curr_vol)
+{
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	if (curr_vol == NULL) {
+		pr_err("(fmdrv): Invalid memory\n");
+		return -ENOMEM;
+	}
+
+	*curr_vol = fmdev->rx.curr_volume / FM_RX_VOLUME_GAIN_STEP;
+
+	return 0;
+}
+
+/* To get current band's bottom and top frequency */
+int fm_rx_get_currband_freq_range(struct fmdrv_ops *fmdev,
+					unsigned int *bottom_frequency,
+					unsigned int *top_frequency)
+{
+	if (bottom_frequency != NULL)
+		*bottom_frequency = fmdev->rx.region.bottom_frequency;
+
+	if (top_frequency != NULL)
+		*top_frequency = fmdev->rx.region.top_frequency;
+
+	return 0;
+}
+
+/* Returns current band index (0-Europe/US; 1-Japan) */
+void fm_rx_get_region(struct fmdrv_ops *fmdev, unsigned char *region)
+{
+	*region = fmdev->rx.region.region_index;
+}
+
+/* Sets band (0-Europe/US; 1-Japan) */
+int fm_rx_set_region(struct fmdrv_ops *fmdev,
+			unsigned char region_to_set)
+{
+	unsigned short payload;
+	unsigned int new_frq = 0;
+	int ret = -EPERM;
+
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return ret;
+
+	if (region_to_set != FM_BAND_EUROPE_US &&
+	    region_to_set != FM_BAND_JAPAN) {
+		pr_err("(fmdrv): Invalid band\n");
+		return -EINVAL;
+	}
+
+	if (fmdev->rx.region.region_index == region_to_set) {
+		pr_err("(fmdrv): Requested band is already configured\n");
+		return ret;
+	}
+
+	/* Send cmd to set the band  */
+	payload = (unsigned short)region_to_set;
+	ret = fmc_send_cmd(fmdev, BAND_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	fmc_update_region_info(fmdev, region_to_set);
+
+	/* Check whether current RX frequency is within band boundary */
+	if (fmdev->rx.curr_freq < fmdev->rx.region.bottom_frequency)
+		new_frq = fmdev->rx.region.bottom_frequency;
+	else if (fmdev->rx.curr_freq > fmdev->rx.region.top_frequency)
+		new_frq = fmdev->rx.region.top_frequency;
+
+	if (new_frq) {
+		pr_debug("(fmdrv): "
+		     "Current freq is not within band limit boundary,"
+		     "switching to %d KHz\n", new_frq);
+		/*
+		 * Current RX frequency is not within boundary. So,
+		 * update it.
+		 */
+		ret = fm_rx_set_frequency(fmdev, new_frq);
+	}
+
+	return ret;
+}
+
+/* Reads current mute mode (Mute Off/On/Attenuate)*/
+int fm_rx_get_mute_mode(struct fmdrv_ops *fmdev,
+			unsigned char *curr_mute_mode)
+{
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	if (curr_mute_mode == NULL) {
+		pr_err("(fmdrv): Invalid memory\n");
+		return -ENOMEM;
+	}
+
+	*curr_mute_mode = fmdev->rx.curr_mute_mode;
+
+	return 0;
+}
+
+static int __fm_config_rx_mute_reg(struct fmdrv_ops *fmdev)
+{
+	unsigned short payload, muteval;
+	int ret;
+
+	muteval = 0;
+	switch (fmdev->rx.curr_mute_mode) {
+	case FM_MUTE_ON:
+		muteval = FM_RX_MUTE_AC_MUTE_MODE;
+		break;
+
+	case FM_MUTE_OFF:
+		muteval = FM_RX_MUTE_UNMUTE_MODE;
+		break;
+
+	case FM_MUTE_ATTENUATE:
+		muteval = FM_RX_MUTE_SOFT_MUTE_FORCE_MODE;
+		break;
+	}
+	if (fmdev->rx.curr_rf_depend_mute == FM_RX_RF_DEPENDENT_MUTE_ON)
+		muteval |= FM_RX_MUTE_RF_DEP_MODE;
+	else
+		muteval &= ~FM_RX_MUTE_RF_DEP_MODE;
+
+	payload = muteval;
+	ret = fmc_send_cmd(fmdev, MUTE_STATUS_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+/* Configures mute mode (Mute Off/On/Attenuate) */
+int fm_rx_set_mute_mode(struct fmdrv_ops *fmdev,
+			unsigned char mute_mode_toset)
+{
+	unsigned char org_state;
+	int ret;
+
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	if (fmdev->rx.curr_mute_mode == mute_mode_toset)
+		return 0;
+
+	org_state = fmdev->rx.curr_mute_mode;
+	fmdev->rx.curr_mute_mode = mute_mode_toset;
+
+	ret = __fm_config_rx_mute_reg(fmdev);
+	if (ret < 0) {
+		fmdev->rx.curr_mute_mode = org_state;
+		return ret;
+	}
+
+	return 0;
+}
+
+/* Gets RF dependent soft mute mode enable/disable status */
+int fm_rx_get_rfdepend_softmute(struct fmdrv_ops *fmdev,
+				unsigned char *curr_mute_mode)
+{
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	if (curr_mute_mode == NULL) {
+		pr_err("(fmdrv): Invalid memory\n");
+		return -ENOMEM;
+	}
+
+	*curr_mute_mode = fmdev->rx.curr_rf_depend_mute;
+
+	return 0;
+}
+
+/* Sets RF dependent soft mute mode */
+int fm_rx_set_rfdepend_softmute(struct fmdrv_ops *fmdev,
+				unsigned char rfdepend_mute)
+{
+	unsigned char org_state;
+	int ret;
+
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	if (rfdepend_mute != FM_RX_RF_DEPENDENT_MUTE_ON &&
+	    rfdepend_mute != FM_RX_RF_DEPENDENT_MUTE_OFF) {
+		pr_err("(fmdrv): Invalid RF dependent soft mute\n");
+		return -EINVAL;
+	}
+	if (fmdev->rx.curr_rf_depend_mute == rfdepend_mute)
+		return 0;
+
+	org_state = fmdev->rx.curr_rf_depend_mute;
+	fmdev->rx.curr_rf_depend_mute = rfdepend_mute;
+
+	ret = __fm_config_rx_mute_reg(fmdev);
+	if (ret < 0) {
+		fmdev->rx.curr_rf_depend_mute = org_state;
+		return ret;
+	}
+
+	return 0;
+}
+
+/* Returns the signal strength level of current channel */
+int fm_rx_get_rssi_level(struct fmdrv_ops *fmdev,
+				unsigned short *rssilvl)
+{
+	unsigned short curr_rssi_lel;
+	int resp_len;
+	int ret;
+
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	if (rssilvl == NULL) {
+		pr_err("(fmdrv): Invalid memory\n");
+		return -ENOMEM;
+	}
+	/* Read current RSSI level */
+	ret = fmc_send_cmd(fmdev, RSSI_LVL_GET, REG_RD, NULL, 2,
+			&curr_rssi_lel, &resp_len);
+	if (ret < 0)
+		return ret;
+
+	*rssilvl = be16_to_cpu(curr_rssi_lel);
+
+	return 0;
+}
+
+/*
+ * Sets the signal strength level that once reached
+ * will stop the auto search process
+ */
+int fm_rx_set_rssi_threshold(struct fmdrv_ops *fmdev,
+				short rssi_lvl_toset)
+{
+	unsigned short payload;
+	int ret;
+
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	if (rssi_lvl_toset < FM_RX_RSSI_THRESHOLD_MIN ||
+	    rssi_lvl_toset > FM_RX_RSSI_THRESHOLD_MAX) {
+		pr_err("(fmdrv): Invalid RSSI threshold level\n");
+		return -EINVAL;
+	}
+	payload = (unsigned short)rssi_lvl_toset;
+	ret = fmc_send_cmd(fmdev, SEARCH_LVL_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	fmdev->rx.curr_rssi_threshold = rssi_lvl_toset;
+	return 0;
+}
+
+/* Returns current RX RSSI threshold value */
+int fm_rx_get_rssi_threshold(struct fmdrv_ops *fmdev, short *curr_rssi_lvl)
+{
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	if (curr_rssi_lvl == NULL) {
+		pr_err("(fmdrv): Invalid memory\n");
+		return -ENOMEM;
+	}
+
+	*curr_rssi_lvl = fmdev->rx.curr_rssi_threshold;
+
+	return 0;
+}
+
+/* Sets RX stereo/mono modes */
+int fm_rx_set_stereo_mono(struct fmdrv_ops *fmdev, unsigned short mode)
+{
+	unsigned short payload;
+	int ret;
+
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	if (mode != FM_STEREO_MODE && mode != FM_MONO_MODE) {
+		pr_err("(fmdrv): Invalid mode\n");
+		return -EINVAL;
+	}
+
+	/* Set stereo/mono mode */
+	payload = (unsigned short)mode;
+	ret = fmc_send_cmd(fmdev, MOST_MODE_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	/* Set stereo blending mode */
+	payload = FM_STEREO_SOFT_BLEND;
+	ret = fmc_send_cmd(fmdev, MOST_BLEND_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+/* Gets current RX stereo/mono mode */
+int fm_rx_get_stereo_mono(struct fmdrv_ops *fmdev, unsigned short *mode)
+{
+	unsigned short curr_mode;
+	int ret, resp_len;
+
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	if (mode == NULL) {
+		pr_err("(fmdrv): Invalid memory\n");
+		return -ENOMEM;
+	}
+
+	ret = fmc_send_cmd(fmdev, MOST_MODE_SET, REG_RD, NULL, 2,
+			&curr_mode, &resp_len);
+	if (ret < 0)
+		return ret;
+
+	*mode = be16_to_cpu(curr_mode);
+
+	return 0;
+}
+
+/* Choose RX de-emphasis filter mode (50us/75us) */
+int fm_rx_set_deemphasis_mode(struct fmdrv_ops *fmdev, unsigned short mode)
+{
+	unsigned short payload;
+	int ret;
+
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	if (mode != FM_RX_EMPHASIS_FILTER_50_USEC &&
+	    mode != FM_RX_EMPHASIS_FILTER_75_USEC) {
+		pr_err("(fmdrv): Invalid rx de-emphasis mode (%d)\n", mode);
+		return -EINVAL;
+	}
+
+	payload = mode;
+	ret = fmc_send_cmd(fmdev, DEMPH_MODE_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	fmdev->rx.curr_deemphasis_mode = mode;
+	return 0;
+}
+
+/* Gets current RX de-emphasis filter mode */
+int fm_rx_get_deemphasis_mode(struct fmdrv_ops *fmdev,
+				unsigned short *curr_deemphasis_mode)
+{
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	if (curr_deemphasis_mode == NULL) {
+		pr_err("(fmdrv): Invalid memory\n");
+		return -ENOMEM;
+	}
+
+	*curr_deemphasis_mode = fmdev->rx.curr_deemphasis_mode;
+
+	return 0;
+}
+
+/* Enable/Disable RX RDS */
+int fm_rx_set_rds_mode(struct fmdrv_ops *fmdev, unsigned char rds_en_dis)
+{
+	unsigned short payload;
+	int ret;
+
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	if (rds_en_dis != FM_RDS_ENABLE && rds_en_dis != FM_RDS_DISABLE) {
+		pr_err("(fmdrv): Invalid rds option\n");
+		return -EINVAL;
+	}
+
+	if (rds_en_dis == FM_RDS_ENABLE
+	    && fmdev->rx.rds.flag == FM_RDS_DISABLE) {
+		/* Turn on RX RDS and RDS circuit */
+		payload = FM_RX_POWET_SET_FM_AND_RDS_BLK_ON;
+		ret = fmc_send_cmd(fmdev, POWER_SET, REG_WR, &payload,
+				sizeof(payload), NULL, NULL);
+		if (ret < 0)
+			return ret;
+
+		/* Clear and reset RDS FIFO */
+		payload = FM_RX_RDS_FLUSH_FIFO;
+		ret = fmc_send_cmd(fmdev, RDS_CNTRL_SET, REG_WR, &payload,
+		sizeof(payload), NULL, NULL);
+		if (ret < 0)
+			return ret;
+
+		/* Read flags - just to clear any pending interrupts. */
+		ret = fmc_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, 2,
+				NULL, NULL);
+		if (ret < 0)
+			return ret;
+
+		/* Set RDS FIFO threshold value */
+		payload = FM_RX_RDS_FIFO_THRESHOLD;
+		ret = fmc_send_cmd(fmdev, RDS_MEM_SET, REG_WR, &payload,
+		sizeof(payload), NULL, NULL);
+		if (ret < 0)
+			return ret;
+
+		/* Enable RDS interrupt */
+		fmdev->irq_info.mask |= FM_RDS_EVENT;
+		payload = fmdev->irq_info.mask;
+		ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
+				sizeof(payload), NULL, NULL);
+		if (ret < 0) {
+			fmdev->irq_info.mask &= ~FM_RDS_EVENT;
+			return ret;
+		}
+
+		/* Update our local flag */
+		fmdev->rx.rds.flag = FM_RDS_ENABLE;
+	} else if (rds_en_dis == FM_RDS_DISABLE
+		   && fmdev->rx.rds.flag == FM_RDS_ENABLE) {
+		/* Turn off RX RDS */
+		/* Turn off RDS circuit */
+		payload = FM_RX_POWER_SET_FM_ON_RDS_OFF;
+		ret = fmc_send_cmd(fmdev, POWER_SET, REG_WR, &payload,
+				sizeof(payload), NULL, NULL);
+		if (ret < 0)
+			return ret;
+
+		/* Reset RDS pointers */
+		fmdev->rx.rds.last_block_index = 0;
+		fmdev->rx.rds.wr_index = 0;
+		fmdev->rx.rds.rd_index = 0;
+		fm_rx_reset_curr_station_info(fmdev);
+
+		/* Update RDS local cache */
+		fmdev->irq_info.mask &= ~(FM_RDS_EVENT);
+		fmdev->rx.rds.flag = FM_RDS_DISABLE;
+	}
+
+	return 0;
+}
+
+/* Returns current RX RDS enable/disable status */
+int fm_rx_get_rds_mode(struct fmdrv_ops *fmdev,
+			unsigned char *curr_rds_en_dis)
+{
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	if (curr_rds_en_dis == NULL) {
+		pr_err("(fmdrv): Invalid memory\n");
+		return -ENOMEM;
+	}
+
+	*curr_rds_en_dis = fmdev->rx.rds.flag;
+
+	return 0;
+}
+
+/* Sets RDS operation mode (RDS/RDBS) */
+int fm_rx_set_rds_system(struct fmdrv_ops *fmdev, unsigned char rds_mode)
+{
+	unsigned short payload;
+	int ret;
+
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	if (rds_mode != FM_RDS_SYSTEM_RDS && rds_mode != FM_RDS_SYSTEM_RBDS) {
+		pr_err("(fmdrv): Invalid rds mode\n");
+		return -EINVAL;
+	}
+	/* Set RDS operation mode */
+	payload = (unsigned short)rds_mode;
+	ret = fmc_send_cmd(fmdev, RDS_SYSTEM_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	fmdev->rx.rds_mode = rds_mode;
+
+	return 0;
+}
+
+/* Returns current RDS operation mode */
+int fm_rx_get_rds_system(struct fmdrv_ops *fmdev,
+				unsigned char *rds_mode)
+{
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	if (rds_mode == NULL) {
+		pr_err("(fmdrv): Invalid memory\n");
+		return -ENOMEM;
+	}
+
+	*rds_mode = fmdev->rx.rds_mode;
+
+	return 0;
+}
+
+/* Configures Alternate Frequency switch mode */
+int fm_rx_set_af_switch(struct fmdrv_ops *fmdev, unsigned char af_mode)
+{
+	unsigned short payload;
+	int ret;
+
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	if (af_mode != FM_RX_RDS_AF_SWITCH_MODE_ON &&
+	    af_mode != FM_RX_RDS_AF_SWITCH_MODE_OFF) {
+		pr_err("(fmdrv): Invalid af mode\n");
+		return -EINVAL;
+	}
+	/* Enable/disable low RSSI interrupt based on af_mode */
+	if (af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON)
+		fmdev->irq_info.mask |= FM_LEV_EVENT;
+	else
+		fmdev->irq_info.mask &= ~FM_LEV_EVENT;
+
+	payload = fmdev->irq_info.mask;
+	ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
+		sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	fmdev->rx.af_mode = af_mode;
+
+	return 0;
+}
+
+/* Returns Alternate Frequency switch status */
+int fm_rx_get_af_switch(struct fmdrv_ops *fmdev, unsigned char *af_mode)
+{
+	if (fmdev->curr_fmmode != FM_MODE_RX)
+		return -EPERM;
+
+	if (af_mode == NULL) {
+		pr_err("(fmdrv): Invalid memory\n");
+		return -ENOMEM;
+	}
+
+	*af_mode = fmdev->rx.af_mode;
+
+	return 0;
+}
diff --git a/drivers/media/radio/wl128x/fmdrv_rx.h b/drivers/media/radio/wl128x/fmdrv_rx.h
new file mode 100644
index 0000000..3e4ba17
--- /dev/null
+++ b/drivers/media/radio/wl128x/fmdrv_rx.h
@@ -0,0 +1,59 @@
+/*
+ *  FM Driver for Connectivity chip of Texas Instruments.
+ *  FM RX module header.
+ *
+ *  Copyright (C) 2010 Texas Instruments
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef _FMDRV_RX_H
+#define _FMDRV_RX_H
+
+int fm_rx_set_frequency(struct fmdrv_ops *, unsigned int);
+int fm_rx_set_mute_mode(struct fmdrv_ops *, unsigned char);
+int fm_rx_set_stereo_mono(struct fmdrv_ops *, unsigned short);
+int fm_rx_set_rds_mode(struct fmdrv_ops *, unsigned char);
+int fm_rx_set_rds_system(struct fmdrv_ops *, unsigned char);
+int fm_rx_set_volume(struct fmdrv_ops *, unsigned short);
+int fm_rx_set_rssi_threshold(struct fmdrv_ops *, short);
+int fm_rx_set_region(struct fmdrv_ops *, unsigned char);
+int fm_rx_set_rfdepend_softmute(struct fmdrv_ops *, unsigned char);
+int fm_rx_set_deemphasis_mode(struct fmdrv_ops *, unsigned short);
+int fm_rx_set_af_switch(struct fmdrv_ops *, unsigned char);
+
+void fm_rx_reset_rds_cache(struct fmdrv_ops *);
+void fm_rx_reset_curr_station_info(struct fmdrv_ops *);
+
+int fm_rx_seek(struct fmdrv_ops *, unsigned int, unsigned int, unsigned int);
+
+int fm_rx_get_rds_mode(struct fmdrv_ops *, unsigned char *);
+int fm_rx_get_rds_system(struct fmdrv_ops *, unsigned char *);
+int fm_rx_get_mute_mode(struct fmdrv_ops *, unsigned char *);
+int fm_rx_get_volume(struct fmdrv_ops *, unsigned short *);
+int fm_rx_get_currband_freq_range(struct fmdrv_ops *,
+					unsigned int *, unsigned int *);
+int fm_rx_get_stereo_mono(struct fmdrv_ops *, unsigned short *);
+int fm_rx_get_rssi_level(struct fmdrv_ops *, unsigned short *);
+int fm_rx_get_rssi_threshold(struct fmdrv_ops *, short *);
+int fm_rx_get_rfdepend_softmute(struct fmdrv_ops *, unsigned char *);
+int fm_rx_get_deemphasis_mode(struct fmdrv_ops *, unsigned short *);
+int fm_rx_get_af_switch(struct fmdrv_ops *, unsigned char *);
+void fm_rx_get_region(struct fmdrv_ops *, unsigned char *);
+
+int fm_rx_set_chanl_spacing(struct fmdrv_ops *, unsigned char);
+int fm_rx_get_chanl_spacing(struct fmdrv_ops *, unsigned char *);
+#endif
+
-- 
1.5.6.3

[PATCH v7 5/7] drivers:media:radio: wl128x: FM driver TX sources

[manjunatha_halli]

From: Manjunatha Halli <manjunatha_halli@ti.com>

This has implementation for FM TX functionality.
It communicates with FM V4l2 module and FM common module.

Signed-off-by: Manjunatha Halli <manjunatha_halli@ti.com>
---
 drivers/media/radio/wl128x/fmdrv_tx.c |  438 +++++++++++++++++++++++++++++++++
 drivers/media/radio/wl128x/fmdrv_tx.h |   37 +++
 2 files changed, 475 insertions(+), 0 deletions(-)
 create mode 100644 drivers/media/radio/wl128x/fmdrv_tx.c
 create mode 100644 drivers/media/radio/wl128x/fmdrv_tx.h

diff --git a/drivers/media/radio/wl128x/fmdrv_tx.c b/drivers/media/radio/wl128x/fmdrv_tx.c
new file mode 100644
index 0000000..ca8769d
--- /dev/null
+++ b/drivers/media/radio/wl128x/fmdrv_tx.c
@@ -0,0 +1,438 @@
+/*
+ *  FM Driver for Connectivity chip of Texas Instruments.
+ *  This sub-module of FM driver implements FM TX functionality.
+ *
+ *  Copyright (C) 2010 Texas Instruments
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <linux/delay.h>
+#include "fmdrv.h"
+#include "fmdrv_common.h"
+#include "fmdrv_tx.h"
+
+int fm_tx_set_stereo_mono(struct fmdrv_ops *fmdev, unsigned short mode)
+{
+	unsigned short payload;
+	int ret = 0;
+
+	if (fmdev->curr_fmmode != FM_MODE_TX)
+		return -EPERM;
+
+	if (fmdev->tx_data.aud_mode == mode)
+		return ret;
+
+	pr_debug("stereo mode: %d\n", mode);
+
+	/* Set Stereo/Mono mode */
+	payload = (1 - mode);
+	ret = fmc_send_cmd(fmdev, MONO_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	fmdev->tx_data.aud_mode = mode;
+
+	return ret;
+}
+
+static int __set_rds_text(struct fmdrv_ops *fmdev, unsigned char *rds_text)
+{
+	unsigned short payload;
+	int ret;
+
+	ret = fmc_send_cmd(fmdev, RDS_DATA_SET, REG_WR, rds_text,
+			strlen(rds_text), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	/* Scroll mode */
+	payload = (unsigned short)0x1;
+	ret = fmc_send_cmd(fmdev, DISPLAY_MODE, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int __set_rds_data_mode(struct fmdrv_ops *fmdev, unsigned char mode)
+{
+	unsigned short payload;
+	int ret;
+
+	/* Setting unique PI TODO: how unique? */
+	payload = (unsigned short)0xcafe;
+	ret = fmc_send_cmd(fmdev, PI_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	/* Set decoder id */
+	payload = (unsigned short)0xa;
+	ret = fmc_send_cmd(fmdev, DI_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	/* TODO: RDS_MODE_GET? */
+	return 0;
+}
+
+static int __set_rds_len(struct fmdrv_ops *fmdev, unsigned char type,
+				unsigned short len)
+{
+	unsigned short payload;
+	int ret;
+
+	len |= type << 8;
+	payload = len;
+	ret = fmc_send_cmd(fmdev, RDS_CONFIG_DATA_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	/* TODO: LENGTH_GET? */
+	return 0;
+}
+
+int fm_tx_set_rds_mode(struct fmdrv_ops *fmdev, unsigned char rds_en_dis)
+{
+	unsigned short payload;
+	int ret;
+	unsigned char rds_text[] = "Zoom2\n";
+
+	if (fmdev->curr_fmmode != FM_MODE_TX)
+		return -EPERM;
+
+	pr_debug("rds_en_dis:%d(E:%d, D:%d)\n", rds_en_dis,
+		   FM_RDS_ENABLE, FM_RDS_DISABLE);
+
+	if (rds_en_dis == FM_RDS_ENABLE) {
+		/* Set RDS length */
+		__set_rds_len(fmdev, 0, strlen(rds_text));
+
+		/* Set RDS text */
+		__set_rds_text(fmdev, rds_text);
+
+		/* Set RDS mode */
+		__set_rds_data_mode(fmdev, 0x0);
+	}
+
+	/* Send command to enable RDS */
+	if (rds_en_dis == FM_RDS_ENABLE)
+		payload = 0x01;
+	else
+		payload = 0x00;
+
+	ret = fmc_send_cmd(fmdev, RDS_DATA_ENB, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	if (rds_en_dis == FM_RDS_ENABLE) {
+		/* Set RDS length */
+		__set_rds_len(fmdev, 0, strlen(rds_text));
+
+		/* Set RDS text */
+		__set_rds_text(fmdev, rds_text);
+	}
+	fmdev->tx_data.rds.flag = rds_en_dis;
+
+	return 0;
+}
+
+int fm_tx_set_radio_text(struct fmdrv_ops *fmdev,
+				unsigned char *rds_text,
+				unsigned char rds_type)
+{
+	unsigned short payload;
+	int ret;
+
+	if (fmdev->curr_fmmode != FM_MODE_TX)
+		return -EPERM;
+
+	fm_tx_set_rds_mode(fmdev, 0);
+
+	/* Set RDS length */
+	__set_rds_len(fmdev, rds_type, strlen(rds_text));
+
+	/* Set RDS text */
+	__set_rds_text(fmdev, rds_text);
+
+	/* Set RDS mode */
+	__set_rds_data_mode(fmdev, 0x0);
+
+	payload = 1;
+	ret = fmc_send_cmd(fmdev, RDS_DATA_ENB, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+int fm_tx_set_af(struct fmdrv_ops *fmdev, unsigned int af)
+{
+	unsigned short payload;
+	int ret;
+
+	if (fmdev->curr_fmmode != FM_MODE_TX)
+		return -EPERM;
+	pr_debug("AF: %d\n", af);
+
+	af = (af - 87500) / 100;
+	payload = (unsigned short)af;
+	ret = fmc_send_cmd(fmdev, TA_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+int fm_tx_set_region(struct fmdrv_ops *fmdev,
+				unsigned char region_to_set)
+{
+	unsigned short payload;
+	int ret;
+
+	if (region_to_set != FM_BAND_EUROPE_US &&
+	    region_to_set != FM_BAND_JAPAN) {
+		pr_err("Invalid band\n");
+		return -EINVAL;
+	}
+
+	/* Send command to set the band */
+	payload = (unsigned short)region_to_set;
+	ret = fmc_send_cmd(fmdev, TX_BAND_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+int fm_tx_set_mute_mode(struct fmdrv_ops *fmdev,
+				unsigned char mute_mode_toset)
+{
+	unsigned short payload;
+	int ret;
+
+	if (fmdev->curr_fmmode != FM_MODE_TX)
+		return -EPERM;
+	pr_debug("tx: mute mode %d\n", mute_mode_toset);
+
+	payload = mute_mode_toset;
+	ret = fmc_send_cmd(fmdev, MUTE, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+/* Set TX Audio I/O */
+static int __set_audio_io(struct fmdrv_ops *fmdev)
+{
+	struct fmtx_data *tx = &fmdev->tx_data;
+	unsigned short payload;
+	int ret;
+
+	/* Set Audio I/O Enable */
+	payload = tx->audio_io;
+	ret = fmc_send_cmd(fmdev, AUDIO_IO_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	/* TODO: is audio set? */
+	return 0;
+}
+
+/* Start TX Transmission */
+static int __enable_xmit(struct fmdrv_ops *fmdev, unsigned char new_xmit_state)
+{
+	struct fmtx_data *tx = &fmdev->tx_data;
+	unsigned short payload;
+	unsigned long timeleft;
+	int ret;
+
+	/* Enable POWER_ENB interrupts */
+	payload = FM_POW_ENB_EVENT;
+	ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	/* Set Power Enable */
+	payload = new_xmit_state;
+	ret = fmc_send_cmd(fmdev, POWER_ENB_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	/* Wait for Power Enabled */
+	init_completion(&fmdev->maintask_completion);
+	timeleft = wait_for_completion_timeout(&fmdev->maintask_completion,
+					       FM_DRV_TX_TIMEOUT);
+	if (!timeleft) {
+		pr_err("Timeout(%d sec),didn't get tune ended interrupt\n",
+			   jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000);
+		return -ETIMEDOUT;
+	}
+
+	set_bit(FM_CORE_TX_XMITING, &fmdev->flag);
+	tx->xmit_state = new_xmit_state;
+
+	return 0;
+}
+
+/* Set TX power level */
+int fm_tx_set_pwr_lvl(struct fmdrv_ops *fmdev, unsigned char new_pwr_lvl)
+{
+	unsigned short payload;
+	struct fmtx_data *tx = &fmdev->tx_data;
+	int ret;
+
+	if (fmdev->curr_fmmode != FM_MODE_TX)
+		return -EPERM;
+	pr_debug("tx: pwr_level_to_set %ld\n", (long int)new_pwr_lvl);
+
+	/* If the core isn't ready update global variable */
+	if (!test_bit(FM_CORE_READY, &fmdev->flag)) {
+		tx->pwr_lvl = new_pwr_lvl;
+		return 0;
+	}
+
+	/* Set power level: Application will specify power level value in
+	 * units of dB/uV, whereas range and step are specific to FM chip.
+	 * For TI's WL chips, convert application specified power level value
+	 * to chip specific value by subtracting 122 from it. Refer to TI FM
+	 * data sheet for details.
+	 * */
+
+	payload = (FM_PWR_LVL_HIGH - new_pwr_lvl);
+	ret = fmc_send_cmd(fmdev, POWER_LEV_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	/* TODO: is the power level set? */
+	tx->pwr_lvl = new_pwr_lvl;
+
+	return 0;
+}
+
+/*
+ * Sets FM TX pre-emphasis filter value (OFF, 50us, or 75us)
+ * Convert V4L2 specified filter values to chip specific filter values.
+ */
+int fm_tx_set_preemph_filter(struct fmdrv_ops *fmdev, unsigned int preemphasis)
+{
+	struct fmtx_data *tx = &fmdev->tx_data;
+	unsigned short payload;
+	int ret;
+
+	if (fmdev->curr_fmmode != FM_MODE_TX)
+		return -EPERM;
+
+	switch (preemphasis) {
+	case V4L2_PREEMPHASIS_DISABLED:
+		payload = FM_TX_PREEMPH_OFF;
+		break;
+	case V4L2_PREEMPHASIS_50_uS:
+		payload = FM_TX_PREEMPH_50US;
+		break;
+	case V4L2_PREEMPHASIS_75_uS:
+		payload = FM_TX_PREEMPH_75US;
+		break;
+	}
+
+	ret = fmc_send_cmd(fmdev, PREMPH_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	tx->preemph = payload;
+
+	return ret;
+}
+
+/* Get the TX tuning capacitor value.*/
+int fm_tx_get_tune_cap_val(struct fmdrv_ops *fmdev)
+{
+	u16 curr_val;
+	int ret, resp_len;
+
+	if (fmdev->curr_fmmode != FM_MODE_TX)
+		return -EPERM;
+
+	ret = fmc_send_cmd(fmdev, READ_FMANT_TUNE_VALUE, REG_RD,
+			NULL, sizeof(curr_val), &curr_val, &resp_len);
+	if (ret < 0)
+		return ret;
+
+	curr_val = be16_to_cpu(curr_val);
+
+	return curr_val;
+}
+
+/* Set TX Frequency */
+int fm_tx_set_frequency(struct fmdrv_ops *fmdev, unsigned int freq_to_set)
+{
+	struct fmtx_data *tx = &fmdev->tx_data;
+	unsigned short payload, chanl_index;
+	int ret;
+
+	if (test_bit(FM_CORE_TX_XMITING, &fmdev->flag)) {
+		__enable_xmit(fmdev, 0);
+		clear_bit(FM_CORE_TX_XMITING, &fmdev->flag);
+	}
+
+	/* Enable FR, BL interrupts */
+	payload = (FM_FR_EVENT | FM_BL_EVENT);
+	ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	tx->tx_frq = (unsigned long)freq_to_set;
+	pr_debug("tx: freq_to_set %ld\n", (long int)tx->tx_frq);
+
+	chanl_index = freq_to_set / 10;
+
+	/* Set current tuner channel */
+	payload = chanl_index;
+	ret = fmc_send_cmd(fmdev, CHANL_SET, REG_WR, &payload,
+			sizeof(payload), NULL, NULL);
+	if (ret < 0)
+		return ret;
+
+	fm_tx_set_pwr_lvl(fmdev, tx->pwr_lvl);
+	fm_tx_set_preemph_filter(fmdev, tx->preemph);
+
+	tx->audio_io = 0x01;	/* I2S */
+	__set_audio_io(fmdev);
+
+	__enable_xmit(fmdev, 0x01);	/* Enable transmission */
+
+	tx->aud_mode = FM_STEREO_MODE;
+	tx->rds.flag = FM_RDS_DISABLE;
+
+	return 0;
+}
+
diff --git a/drivers/media/radio/wl128x/fmdrv_tx.h b/drivers/media/radio/wl128x/fmdrv_tx.h
new file mode 100644
index 0000000..f4b9248
--- /dev/null
+++ b/drivers/media/radio/wl128x/fmdrv_tx.h
@@ -0,0 +1,37 @@
+/*
+ *  FM Driver for Connectivity chip of Texas Instruments.
+ *  FM TX module header.
+ *
+ *  Copyright (C) 2010 Texas Instruments
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef _FMDRV_TX_H
+#define _FMDRV_TX_H
+
+int fm_tx_set_frequency(struct fmdrv_ops *, unsigned int);
+int fm_tx_set_pwr_lvl(struct fmdrv_ops *, unsigned char);
+int fm_tx_set_region(struct fmdrv_ops *, unsigned char);
+int fm_tx_set_mute_mode(struct fmdrv_ops *, unsigned char);
+int fm_tx_set_stereo_mono(struct fmdrv_ops *, unsigned short);
+int fm_tx_set_rds_mode(struct fmdrv_ops *, unsigned char);
+int fm_tx_set_radio_text(struct fmdrv_ops *, unsigned char *, unsigned char);
+int fm_tx_set_af(struct fmdrv_ops *, unsigned int);
+int fm_tx_set_preemph_filter(struct fmdrv_ops *, unsigned int);
+int fm_tx_get_tune_cap_val(struct fmdrv_ops *);
+
+#endif
+
-- 
1.5.6.3

[PATCH v7 6/7] drivers:media:radio: wl128x: Kconfig & Makefile added for wl128x driver

[manjunatha_halli]

From: Manjunatha Halli <manjunatha_halli@ti.com>

Signed-off-by: Manjunatha Halli <manjunatha_halli@ti.com>
---
 drivers/media/radio/wl128x/Kconfig  |   17 +++++++++++++++++
 drivers/media/radio/wl128x/Makefile |    6 ++++++
 2 files changed, 23 insertions(+), 0 deletions(-)
 create mode 100644 drivers/media/radio/wl128x/Kconfig
 create mode 100644 drivers/media/radio/wl128x/Makefile

diff --git a/drivers/media/radio/wl128x/Kconfig b/drivers/media/radio/wl128x/Kconfig
new file mode 100644
index 0000000..749f67b
--- /dev/null
+++ b/drivers/media/radio/wl128x/Kconfig
@@ -0,0 +1,17 @@
+#
+# TI's wl128x FM driver based on TI's ST driver.
+#
+menu "Texas Instruments WL128x FM driver (ST based)"
+config RADIO_WL128X
+	tristate "Texas Instruments WL128x FM Radio"
+	depends on VIDEO_V4L2 && RFKILL
+	select TI_ST
+	help
+	Choose Y here if you have this FM radio chip.
+
+	In order to control your radio card, you will need to use programs
+	that are compatible with the Video For Linux 2 API.  Information on
+	this API and pointers to "v4l2" programs may be found at
+	<file:Documentation/video4linux/API.html>.
+
+endmenu
diff --git a/drivers/media/radio/wl128x/Makefile b/drivers/media/radio/wl128x/Makefile
new file mode 100644
index 0000000..32a0ead
--- /dev/null
+++ b/drivers/media/radio/wl128x/Makefile
@@ -0,0 +1,6 @@
+#
+# Makefile for TI's shared transport driver based wl128x
+# FM radio.
+#
+obj-$(CONFIG_RADIO_WL128X)	+= fm_drv.o
+fm_drv-objs		:= fmdrv_common.o fmdrv_rx.o fmdrv_tx.o fmdrv_v4l2.o
-- 
1.5.6.3

[PATCH v7 7/7] drivers:media:radio: Update Kconfig and Makefile for supporting wl128x

[manjunatha_halli]

From: Manjunatha Halli <manjunatha_halli@ti.com>

Signed-off-by: Manjunatha Halli <manjunatha_halli@ti.com>
---
 drivers/media/radio/Kconfig  |    3 +++
 drivers/media/radio/Makefile |    1 +
 2 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/media/radio/Kconfig b/drivers/media/radio/Kconfig
index 83567b8..4529bc7 100644
--- a/drivers/media/radio/Kconfig
+++ b/drivers/media/radio/Kconfig
@@ -452,4 +452,7 @@ config RADIO_TIMBERDALE
 	  found behind the Timberdale FPGA on the Russellville board.
 	  Enabling this driver will automatically select the DSP and tuner.
 
+# TI's ST based wl128x FM radio
+source "drivers/media/radio/wl128x/Kconfig"
+
 endif # RADIO_ADAPTERS
diff --git a/drivers/media/radio/Makefile b/drivers/media/radio/Makefile
index f615583..b71f448 100644
--- a/drivers/media/radio/Makefile
+++ b/drivers/media/radio/Makefile
@@ -26,5 +26,6 @@ obj-$(CONFIG_RADIO_TEA5764) += radio-tea5764.o
 obj-$(CONFIG_RADIO_SAA7706H) += saa7706h.o
 obj-$(CONFIG_RADIO_TEF6862) += tef6862.o
 obj-$(CONFIG_RADIO_TIMBERDALE) += radio-timb.o
+obj-$(CONFIG_RADIO_WL128X) += wl128x/
 
 EXTRA_CFLAGS += -Isound
-- 
1.5.6.3

Re: [PATCH v7 2/7] drivers:media:radio: wl128x: fmdrv_v4l2 sources

[Hans Verkuil]

On Friday, December 17, 2010 12:06:31 manjunatha_halli@ti.com wrote:
> From: Manjunatha Halli <manjunatha_halli@ti.com>
> 
> This module interfaces V4L2 subsystem and FM common module.
> It registers itself with V4L2 as Radio module.
> 
> Signed-off-by: Manjunatha Halli <manjunatha_halli@ti.com>
> ---
>  drivers/media/radio/wl128x/fmdrv_v4l2.c |  588 +++++++++++++++++++++++++++++++
>  drivers/media/radio/wl128x/fmdrv_v4l2.h |   33 ++
>  2 files changed, 621 insertions(+), 0 deletions(-)
>  create mode 100644 drivers/media/radio/wl128x/fmdrv_v4l2.c
>  create mode 100644 drivers/media/radio/wl128x/fmdrv_v4l2.h
> 
> diff --git a/drivers/media/radio/wl128x/fmdrv_v4l2.c b/drivers/media/radio/wl128x/fmdrv_v4l2.c
> new file mode 100644
> index 0000000..623102f
> --- /dev/null
> +++ b/drivers/media/radio/wl128x/fmdrv_v4l2.c

<snip>

> +static const struct v4l2_file_operations fm_drv_fops = {
> +	.owner = THIS_MODULE,
> +	.read = fm_v4l2_fops_read,
> +	.write = fm_v4l2_fops_write,
> +	.poll = fm_v4l2_fops_poll,
> +	.ioctl = video_ioctl2,

Please use unlocked_ioctl. The .ioctl call is deprecated since it relied on the
Big Kernel Lock which is in the process of being removed from the kernel. The
BKL serialized all ioctl calls, unlocked_ioctl relies on the driver to serialize
where necessary.

There are two ways of doing the conversion: one is to do all the locking within
the driver, the other is to use core-assisted locking. How to do the core-assisted
locking is described in Documentation/video4linux/v4l2-framework.txt, but I'll
repeat the relevant part here:

v4l2_file_operations and locking
--------------------------------

You can set a pointer to a mutex_lock in struct video_device. Usually this
will be either a top-level mutex or a mutex per device node. If you want
finer-grained locking then you have to set it to NULL and do you own locking.

If a lock is specified then all file operations will be serialized on that
lock. If you use videobuf then you must pass the same lock to the videobuf
queue initialize function: if videobuf has to wait for a frame to arrive, then
it will temporarily unlock the lock and relock it afterwards. If your driver
also waits in the code, then you should do the same to allow other processes
to access the device node while the first process is waiting for something.

The implementation of a hotplug disconnect should also take the lock before
calling v4l2_device_disconnect.

> +	.open = fm_v4l2_fops_open,
> +	.release = fm_v4l2_fops_release,
> +};

Regards,

	Hans

-- 
Hans Verkuil - video4linux developer - sponsored by Cisco

Re: [PATCH v7 2/7] drivers:media:radio: wl128x: fmdrv_v4l2 sources

[halli manjunatha]

10 at 5:08 PM, Hans Verkuil <hverkuil@xs4all.nl> wrote:
> On Friday, December 17, 2010 12:06:31 manjunatha_halli@ti.com wrote:
>> From: Manjunatha Halli <manjunatha_halli@ti.com>
>>
>> This module interfaces V4L2 subsystem and FM common module.
>> It registers itself with V4L2 as Radio module.
>>
>> Signed-off-by: Manjunatha Halli <manjunatha_halli@ti.com>
>> ---
>>  drivers/media/radio/wl128x/fmdrv_v4l2.c |  588 +++++++++++++++++++++++++++++++
>>  drivers/media/radio/wl128x/fmdrv_v4l2.h |   33 ++
>>  2 files changed, 621 insertions(+), 0 deletions(-)
>>  create mode 100644 drivers/media/radio/wl128x/fmdrv_v4l2.c
>>  create mode 100644 drivers/media/radio/wl128x/fmdrv_v4l2.h
>>
>> diff --git a/drivers/media/radio/wl128x/fmdrv_v4l2.c b/drivers/media/radio/wl128x/fmdrv_v4l2.c
>> new file mode 100644
>> index 0000000..623102f
>> --- /dev/null
>> +++ b/drivers/media/radio/wl128x/fmdrv_v4l2.c
>
> <snip>
>
>> +static const struct v4l2_file_operations fm_drv_fops = {
>> +     .owner = THIS_MODULE,
>> +     .read = fm_v4l2_fops_read,
>> +     .write = fm_v4l2_fops_write,
>> +     .poll = fm_v4l2_fops_poll,
>> +     .ioctl = video_ioctl2,
>
> Please use unlocked_ioctl. The .ioctl call is deprecated since it relied on the
> Big Kernel Lock which is in the process of being removed from the kernel. The
> BKL serialized all ioctl calls, unlocked_ioctl relies on the driver to serialize
> where necessary.
>
> There are two ways of doing the conversion: one is to do all the locking within
> the driver, the other is to use core-assisted locking. How to do the core-assisted
> locking is described in Documentation/video4linux/v4l2-framework.txt, but I'll
> repeat the relevant part here:
>
> v4l2_file_operations and locking
> --------------------------------
>
> You can set a pointer to a mutex_lock in struct video_device. Usually this
> will be either a top-level mutex or a mutex per device node. If you want
> finer-grained locking then you have to set it to NULL and do you own locking.
>
> If a lock is specified then all file operations will be serialized on that
> lock. If you use videobuf then you must pass the same lock to the videobuf
> queue initialize function: if videobuf has to wait for a frame to arrive, then
> it will temporarily unlock the lock and relock it afterwards. If your driver
> also waits in the code, then you should do the same to allow other processes
> to access the device node while the first process is waiting for something.
>
> The implementation of a hotplug disconnect should also take the lock before
> calling v4l2_device_disconnect.
>
>> +     .open = fm_v4l2_fops_open,
>> +     .release = fm_v4l2_fops_release,
>> +};

Hans,

I did this in my driver,
--- a/drivers/media/radio/wl128x/fmdrv_v4l2.c
+++ b/drivers/media/radio/wl128x/fmdrv_v4l2.c
@@ -477,7 +477,7 @@ static const struct v4l2_file_operations fm_drv_fops = {
        .read = fm_v4l2_fops_read,
        .write = fm_v4l2_fops_write,
        .poll = fm_v4l2_fops_poll,
-       .ioctl = video_ioctl2,
+       .unlocked_ioctl = video_ioctl2,
        .open = fm_v4l2_fops_open,
        .release = fm_v4l2_fops_release,

and apparently didn't face any issues during regression.. (related to
concurrency...)
and more-over all of my ioctls from the application being called in
process context are all synchronous, i.e
application calls and waits for it to finish before calling another ioctl.

So is this approach alright?
Is there a reason to opt for the .ioctl ? The locked approach?
Or have mutex locks inside the unlocked handlers?

If not I will go ahead and submit v8 using the unlocked_ioctl....


> Regards,
>
>        Hans
>
> --
> Hans Verkuil - video4linux developer - sponsored by Cisco
> --
> To unsubscribe from this list: send the line "unsubscribe linux-media" in
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>



-- 
Regards
Halli

Re: [PATCH v7 2/7] drivers:media:radio: wl128x: fmdrv_v4l2 sources

[Hans Verkuil]

On Wednesday, December 22, 2010 07:19:54 halli manjunatha wrote:
> 10 at 5:08 PM, Hans Verkuil <hverkuil@xs4all.nl> wrote:
> > On Friday, December 17, 2010 12:06:31 manjunatha_halli@ti.com wrote:
> >> From: Manjunatha Halli <manjunatha_halli@ti.com>
> >>
> >> This module interfaces V4L2 subsystem and FM common module.
> >> It registers itself with V4L2 as Radio module.
> >>
> >> Signed-off-by: Manjunatha Halli <manjunatha_halli@ti.com>
> >> ---
> >>  drivers/media/radio/wl128x/fmdrv_v4l2.c |  588 +++++++++++++++++++++++++++++++
> >>  drivers/media/radio/wl128x/fmdrv_v4l2.h |   33 ++
> >>  2 files changed, 621 insertions(+), 0 deletions(-)
> >>  create mode 100644 drivers/media/radio/wl128x/fmdrv_v4l2.c
> >>  create mode 100644 drivers/media/radio/wl128x/fmdrv_v4l2.h
> >>
> >> diff --git a/drivers/media/radio/wl128x/fmdrv_v4l2.c b/drivers/media/radio/wl128x/fmdrv_v4l2.c
> >> new file mode 100644
> >> index 0000000..623102f
> >> --- /dev/null
> >> +++ b/drivers/media/radio/wl128x/fmdrv_v4l2.c
> >
> > <snip>
> >
> >> +static const struct v4l2_file_operations fm_drv_fops = {
> >> +     .owner = THIS_MODULE,
> >> +     .read = fm_v4l2_fops_read,
> >> +     .write = fm_v4l2_fops_write,
> >> +     .poll = fm_v4l2_fops_poll,
> >> +     .ioctl = video_ioctl2,
> >
> > Please use unlocked_ioctl. The .ioctl call is deprecated since it relied on the
> > Big Kernel Lock which is in the process of being removed from the kernel. The
> > BKL serialized all ioctl calls, unlocked_ioctl relies on the driver to serialize
> > where necessary.
> >
> > There are two ways of doing the conversion: one is to do all the locking within
> > the driver, the other is to use core-assisted locking. How to do the core-assisted
> > locking is described in Documentation/video4linux/v4l2-framework.txt, but I'll
> > repeat the relevant part here:
> >
> > v4l2_file_operations and locking
> > --------------------------------
> >
> > You can set a pointer to a mutex_lock in struct video_device. Usually this
> > will be either a top-level mutex or a mutex per device node. If you want
> > finer-grained locking then you have to set it to NULL and do you own locking.
> >
> > If a lock is specified then all file operations will be serialized on that
> > lock. If you use videobuf then you must pass the same lock to the videobuf
> > queue initialize function: if videobuf has to wait for a frame to arrive, then
> > it will temporarily unlock the lock and relock it afterwards. If your driver
> > also waits in the code, then you should do the same to allow other processes
> > to access the device node while the first process is waiting for something.
> >
> > The implementation of a hotplug disconnect should also take the lock before
> > calling v4l2_device_disconnect.
> >
> >> +     .open = fm_v4l2_fops_open,
> >> +     .release = fm_v4l2_fops_release,
> >> +};
> 
> Hans,
> 
> I did this in my driver,
> --- a/drivers/media/radio/wl128x/fmdrv_v4l2.c
> +++ b/drivers/media/radio/wl128x/fmdrv_v4l2.c
> @@ -477,7 +477,7 @@ static const struct v4l2_file_operations fm_drv_fops = {
>         .read = fm_v4l2_fops_read,
>         .write = fm_v4l2_fops_write,
>         .poll = fm_v4l2_fops_poll,
> -       .ioctl = video_ioctl2,
> +       .unlocked_ioctl = video_ioctl2,
>         .open = fm_v4l2_fops_open,
>         .release = fm_v4l2_fops_release,
> 
> and apparently didn't face any issues during regression.. (related to
> concurrency...)
> and more-over all of my ioctls from the application being called in
> process context are all synchronous, i.e
> application calls and waits for it to finish before calling another ioctl.
> 
> So is this approach alright?
> Is there a reason to opt for the .ioctl ? The locked approach?
> Or have mutex locks inside the unlocked handlers?
> 
> If not I will go ahead and submit v8 using the unlocked_ioctl....

The old use of .ioctl would serialize all ioctl calls. So if multiple processes
opened the video device node and made ioctl calls, then the Big Kernel Lock would
serialize those ioctls. Switching to .unlocked_ioctl will no longer serialize
those calls and so you will have to do something to prevent race conditions.

Either identify the critical sections and lock them manually, or use the core
assisted locking scheme that V4L2 provides to serialize all file operations.

I recommend the latter since it is very simple to implement and it does the
job. Since there is no locking whatsoever in the driver I think that manually
adding locking is too much work (and too hard to verify correctness).

Regards,

	Hans

-- 
Hans Verkuil - video4linux developer - sponsored by Cisco