From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756446AbYIIENq (ORCPT ); Tue, 9 Sep 2008 00:13:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755230AbYIIEIy (ORCPT ); Tue, 9 Sep 2008 00:08:54 -0400 Received: from mx2.redhat.com ([66.187.237.31]:42586 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753550AbYIIEIE (ORCPT ); Tue, 9 Sep 2008 00:08:04 -0400 From: Jarod Wilson To: linux-kernel@vger.kernel.org Cc: Jarod Wilson , Jarod Wilson , Janne Grunau , Christoph Bartelmus Subject: [PATCH 16/18] lirc driver for the IR interface on BT829-based hardware Date: Tue, 9 Sep 2008 00:06:01 -0400 Message-Id: <1220933164-10160-17-git-send-email-jwilson@redhat.com> In-Reply-To: <1220933164-10160-16-git-send-email-jwilson@redhat.com> References: <1220933164-10160-1-git-send-email-jwilson@redhat.com> <1220933164-10160-2-git-send-email-jwilson@redhat.com> <1220933164-10160-3-git-send-email-jwilson@redhat.com> <1220933164-10160-4-git-send-email-jwilson@redhat.com> <1220933164-10160-5-git-send-email-jwilson@redhat.com> <1220933164-10160-6-git-send-email-jwilson@redhat.com> <1220933164-10160-7-git-send-email-jwilson@redhat.com> <1220933164-10160-8-git-send-email-jwilson@redhat.com> <1220933164-10160-9-git-send-email-jwilson@redhat.com> <1220933164-10160-10-git-send-email-jwilson@redhat.com> <1220933164-10160-11-git-send-email-jwilson@redhat.com> <1220933164-10160-12-git-send-email-jwilson@redhat.com> <1220933164-10160-13-git-send-email-jwilson@redhat.com> <1220933164-10160-14-git-send-email-jwilson@redhat.com> <1220933164-10160-15-git-send-email-jwilson@redhat.com> <1220933164-10160-16-git-send-email-jwilson@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Jarod Wilson Signed-off-by: Janne Grunau CC: Christoph Bartelmus --- drivers/input/lirc/Kconfig | 7 + drivers/input/lirc/Makefile | 1 + drivers/input/lirc/lirc_bt829.c | 388 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 396 insertions(+), 0 deletions(-) create mode 100644 drivers/input/lirc/lirc_bt829.c diff --git a/drivers/input/lirc/Kconfig b/drivers/input/lirc/Kconfig index b2bdbfb..2af6278 100644 --- a/drivers/input/lirc/Kconfig +++ b/drivers/input/lirc/Kconfig @@ -25,6 +25,13 @@ config LIRC_ATIUSB help Driver for the ATI USB RF remote receiver +config LIRC_BT829 + tristate "BT829 based hardware" + default n + depends on LIRC_DEV + help + Driver for the IR interface on BT829-based hardware + config LIRC_CMDIR tristate "CommandIR USB Transceiver" default n diff --git a/drivers/input/lirc/Makefile b/drivers/input/lirc/Makefile index 761cb47..c5f71fa 100644 --- a/drivers/input/lirc/Makefile +++ b/drivers/input/lirc/Makefile @@ -7,6 +7,7 @@ EXTRA_CFLAGS =-DIRCTL_DEV_MAJOR=61 -DLIRC_SERIAL_TRANSMITTER -I$(src) obj-$(CONFIG_LIRC_DEV) += lirc_dev.o obj-$(CONFIG_LIRC_ATIUSB) += lirc_atiusb.o +obj-$(CONFIG_LIRC_BT829) += lirc_bt829.o obj-$(CONFIG_LIRC_CMDIR) += lirc_cmdir.o obj-$(CONFIG_LIRC_I2C) += lirc_i2c.o obj-$(CONFIG_LIRC_IGORPLUGUSB) += lirc_igorplugusb.o diff --git a/drivers/input/lirc/lirc_bt829.c b/drivers/input/lirc/lirc_bt829.c new file mode 100644 index 0000000..01cbdfe --- /dev/null +++ b/drivers/input/lirc/lirc_bt829.c @@ -0,0 +1,388 @@ +/* + * Remote control driver for the TV-card based on bt829 + * + * by Leonid Froenchenko + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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 + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "lirc_dev.h" + +static int poll_main(void); +static int atir_init_start(void); + +static void write_index(unsigned char index, unsigned int value); +static unsigned int read_index(unsigned char index); + +static void do_i2c_start(void); +static void do_i2c_stop(void); + +static void seems_wr_byte(unsigned char al); +static unsigned char seems_rd_byte(void); + +static unsigned int read_index(unsigned char al); +static void write_index(unsigned char ah, unsigned int edx); + +static void cycle_delay(int cycle); + +static void do_set_bits(unsigned char bl); +static unsigned char do_get_bits(void); + +#define DATA_PCI_OFF 0x7FFC00 +#define WAIT_CYCLE 20 + +static int debug; +#define dprintk(fmt, args...) \ + do { \ + if (debug) \ + printk(KERN_DEBUG fmt, ## args); \ + } while (0) + +static int atir_minor; +static unsigned long pci_addr_phys; +static unsigned char *pci_addr_lin; + +static struct lirc_plugin atir_plugin; + +static struct pci_dev *do_pci_probe(void) +{ + struct pci_dev *my_dev; + my_dev = pci_get_device(PCI_VENDOR_ID_ATI, + PCI_DEVICE_ID_ATI_264VT, NULL); + if (my_dev) { + printk(KERN_ERR "ATIR: Using device: %s\n", + pci_name(my_dev)); + pci_addr_phys = 0; + if (my_dev->resource[0].flags & IORESOURCE_MEM) { + pci_addr_phys = my_dev->resource[0].start; + printk(KERN_INFO "ATIR memory at 0x%08X \n", + (unsigned int)pci_addr_phys); + } + if (pci_addr_phys == 0) { + printk(KERN_ERR "ATIR no memory resource ?\n"); + return NULL; + } + } else { + printk(KERN_ERR "ATIR: pci_prob failed\n"); + return NULL; + } + return my_dev; +} + +static int atir_add_to_buf(void *data, struct lirc_buffer *buf) +{ + unsigned char key; + int status; + status = poll_main(); + key = (status >> 8) & 0xFF; + if (status & 0xFF) { + dprintk("ATIR reading key %02X\n", key); + lirc_buffer_write_1(buf, &key); + return 0; + } + return -ENODATA; +} + +static int atir_set_use_inc(void *data) +{ + dprintk("ATIR driver is opened\n"); + return 0; +} + +static void atir_set_use_dec(void *data) +{ + dprintk("ATIR driver is closed\n"); +} + +int init_module(void) +{ + struct pci_dev *pdev; + + pdev = do_pci_probe(); + if (pdev == NULL) + return 1; + + if (!atir_init_start()) + return 1; + + strcpy(atir_plugin.name, "ATIR"); + atir_plugin.minor = -1; + atir_plugin.code_length = 8; + atir_plugin.sample_rate = 10; + atir_plugin.data = 0; + atir_plugin.add_to_buf = atir_add_to_buf; + atir_plugin.set_use_inc = atir_set_use_inc; + atir_plugin.set_use_dec = atir_set_use_dec; + atir_plugin.dev = &pdev->dev; + atir_plugin.owner = THIS_MODULE; + + atir_minor = lirc_register_plugin(&atir_plugin); + dprintk("ATIR driver is registered on minor %d\n", atir_minor); + + return 0; +} + + +void cleanup_module(void) +{ + lirc_unregister_plugin(atir_minor); +} + + +static int atir_init_start(void) +{ + pci_addr_lin = ioremap(pci_addr_phys + DATA_PCI_OFF, 0x400); + if (pci_addr_lin == 0) { + printk(KERN_INFO "atir: pci mem must be mapped\n"); + return 0; + } + return 1; +} + +static void cycle_delay(int cycle) +{ + udelay(WAIT_CYCLE*cycle); +} + + +static int poll_main() +{ + unsigned char status_high, status_low; + + do_i2c_start(); + + seems_wr_byte(0xAA); + seems_wr_byte(0x01); + + do_i2c_start(); + + seems_wr_byte(0xAB); + + status_low = seems_rd_byte(); + status_high = seems_rd_byte(); + + do_i2c_stop(); + + return (status_high << 8) | status_low; +} + +static void do_i2c_start(void) +{ + do_set_bits(3); + cycle_delay(4); + + do_set_bits(1); + cycle_delay(7); + + do_set_bits(0); + cycle_delay(2); +} + +static void do_i2c_stop(void) +{ + unsigned char bits; + bits = do_get_bits() & 0xFD; + do_set_bits(bits); + cycle_delay(1); + + bits |= 1; + do_set_bits(bits); + cycle_delay(2); + + bits |= 2; + do_set_bits(bits); + bits = 3; + do_set_bits(bits); + cycle_delay(2); +} + +static void seems_wr_byte(unsigned char value) +{ + int i; + unsigned char reg; + + reg = do_get_bits(); + for (i = 0; i < 8; i++) { + if (value & 0x80) + reg |= 0x02; + else + reg &= 0xFD; + + do_set_bits(reg); + cycle_delay(1); + + reg |= 1; + do_set_bits(reg); + cycle_delay(1); + + reg &= 0xFE; + do_set_bits(reg); + cycle_delay(1); + value <<= 1; + } + cycle_delay(2); + + reg |= 2; + do_set_bits(reg); + + reg |= 1; + do_set_bits(reg); + + cycle_delay(1); + do_get_bits(); + + reg &= 0xFE; + do_set_bits(reg); + cycle_delay(3); +} + +static unsigned char seems_rd_byte(void) +{ + int i; + int rd_byte; + unsigned char bits_2, bits_1; + + bits_1 = do_get_bits() | 2; + do_set_bits(bits_1); + + rd_byte = 0; + for (i = 0; i < 8; i++) { + bits_1 &= 0xFE; + do_set_bits(bits_1); + cycle_delay(2); + + bits_1 |= 1; + do_set_bits(bits_1); + cycle_delay(1); + + bits_2 = do_get_bits(); + if (bits_2 & 2) + rd_byte |= 1; + + rd_byte <<= 1; + } + + bits_1 = 0; + if (bits_2 == 0) + bits_1 |= 2; + + do_set_bits(bits_1); + cycle_delay(2); + + bits_1 |= 1; + do_set_bits(bits_1); + cycle_delay(3); + + bits_1 &= 0xFE; + do_set_bits(bits_1); + cycle_delay(2); + + rd_byte >>= 1; + rd_byte &= 0xFF; + return rd_byte; +} + +static void do_set_bits(unsigned char new_bits) +{ + int reg_val; + reg_val = read_index(0x34); + if (new_bits & 2) { + reg_val &= 0xFFFFFFDF; + reg_val |= 1; + } else { + reg_val &= 0xFFFFFFFE; + reg_val |= 0x20; + } + reg_val |= 0x10; + write_index(0x34, reg_val); + + reg_val = read_index(0x31); + if (new_bits & 1) + reg_val |= 0x1000000; + else + reg_val &= 0xFEFFFFFF; + + reg_val |= 0x8000000; + write_index(0x31, reg_val); +} + +static unsigned char do_get_bits(void) +{ + unsigned char bits; + int reg_val; + + reg_val = read_index(0x34); + reg_val |= 0x10; + reg_val &= 0xFFFFFFDF; + write_index(0x34, reg_val); + + reg_val = read_index(0x34); + bits = 0; + if (reg_val & 8) + bits |= 2; + else + bits &= 0xFD; + + reg_val = read_index(0x31); + if (reg_val & 0x1000000) + bits |= 1; + else + bits &= 0xFE; + + return bits; +} + +static unsigned int read_index(unsigned char index) +{ + unsigned char *addr; + unsigned int value; + /* addr = pci_addr_lin + DATA_PCI_OFF + ((index & 0xFF) << 2); */ + addr = pci_addr_lin + ((index & 0xFF) << 2); + value = readl(addr); + return value; +} + +static void write_index(unsigned char index, unsigned int reg_val) +{ + unsigned char *addr; + addr = pci_addr_lin + ((index & 0xFF) << 2); + writel(reg_val, addr); +} + +MODULE_AUTHOR("Froenchenko Leonid"); +MODULE_DESCRIPTION("IR remote driver for bt829 based TV cards"); +MODULE_LICENSE("GPL"); + +module_param(debug, bool, 0644); +MODULE_PARM_DESC(debug, "Debug enabled or not"); + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * --------------------------------------------------------------------------- + * Local variables: + * c-basic-offset: 8 + * End: + */ -- 1.6.0.1