* [PATCH v6 0/4] Add modules for realtek USB card reader
@ 2014-04-09 6:15 rogerable
2014-04-09 6:16 ` [PATCH v6 1/4] [v6 fix] mfd/rtsx_usb: fix possible race condition rogerable
` (3 more replies)
0 siblings, 4 replies; 6+ messages in thread
From: rogerable @ 2014-04-09 6:15 UTC (permalink / raw)
To: Samuel Ortiz, Lee Jones, Chris Ball, Greg Kroah-Hartman,
Maxim Levitsky, Alex Dubov, Dan Carpenter, Ulf Hansson,
Andrew Morton, Oliver Neukum
Cc: rogerable, linux-kernel, linux-mmc, driverdev-devel, wei_wang,
micky_ching
From: Roger Tseng <rogerable@realtek.com>
This patchset adds modules to support Realtek USB vendor specific class flash
card reader: one base module in MFD subsystem and two host modules in both mmc
and memstick subsystems. The architecture is similar to rtsx_pci.
This work is done primarily to replace the staging driver: staging/rts5139,
which doesn't utilize mmc nor memstick subsystems. Once the patchset or its
revision is applied, we may need Greg's help to remove the staging one.
v2:
1. Fix potential buffer overflow in rtsx_usb_seq_write_register()
2. Remove unnecessary casting and messages
3. Revise coding style and white spaces
v3:
1. Fix MMC detection fail when under xhci
2. Minor change of pm_runtime behavior in rtsx_usb_ms to prevent some rare
freeze due to erroneous Memstick card(not MS-Pro)
3. Further revise coding style as suggested in the thread of v2
4. Using managed resources: devm_*
5. Change license from "GPL v2 and later" to "GPL v2"
v4:
1. Remove invocations to deprecated/removed mmc_suspend|resume_host APIs and
unnecessary platform device pm routines
2. Support CRC-ignored R1 response for CMD13 in response to commit:
a27fbf2f067b0cd6f172c8b696b9a44c58bfaa7a: mmc: add ignorance case for
CMD13 CRC error
3. Remove unnecessary #ifdef CONFIG_PM_RUNTIME
v5:
1. rtsx_usb_ms.c: adding header inclusion, removing unnecessary NULL checking,
and add cancel_work_sync in removal handler to wait possible pending
works.
(Changes only rtsx_usb_ms. Other files remain the same to v4)
v6:
NOTE:since the v3 of patch 1/3 (rtsx_usb) has been merged, only diffs are
submitted and splitted into two.
1. rtsx_usb.c: fix possible race conditions:
rtsx_usb_bulk_transfer_sglist(): del_timer() => del_timer_sync()
rtsx_usb_probe(): move setup_timer() before mfd_add_devices() and also
remove unnecessary init_timer()
2. rtsx_usb.c: rtsx_usb_suspend(): add comments to LED turn-off
(Changes only rtsx_usb.c. Other files remain the same to v5)
Roger Tseng (4):
[v6 fix] mfd/rtsx_usb: fix possible race condition
[v6 fix] mfd/rtsx_usb: add comment in rtsx_usb_suspend
mmc: Add realtek USB sdmmc host driver
memstick: Add realtek USB memstick host driver
drivers/memstick/host/Kconfig | 10 +
drivers/memstick/host/Makefile | 1 +
drivers/memstick/host/rtsx_usb_ms.c | 839 ++++++++++++++++++++
drivers/mfd/rtsx_usb.c | 14 +-
drivers/mmc/host/Kconfig | 7 +
drivers/mmc/host/Makefile | 1 +
drivers/mmc/host/rtsx_usb_sdmmc.c | 1462 +++++++++++++++++++++++++++++++++++
7 files changed, 2330 insertions(+), 4 deletions(-)
create mode 100644 drivers/memstick/host/rtsx_usb_ms.c
create mode 100644 drivers/mmc/host/rtsx_usb_sdmmc.c
--
1.8.2
^ permalink raw reply [flat|nested] 6+ messages in thread* [PATCH v6 1/4] [v6 fix] mfd/rtsx_usb: fix possible race condition 2014-04-09 6:15 [PATCH v6 0/4] Add modules for realtek USB card reader rogerable @ 2014-04-09 6:16 ` rogerable 2014-04-09 6:16 ` [PATCH v6 2/4] [v6 fix] mfd/rtsx_usb: add comment in rtsx_usb_suspend rogerable ` (2 subsequent siblings) 3 siblings, 0 replies; 6+ messages in thread From: rogerable @ 2014-04-09 6:16 UTC (permalink / raw) To: Samuel Ortiz, Lee Jones, Chris Ball, Greg Kroah-Hartman, Maxim Levitsky, Alex Dubov, Dan Carpenter, Ulf Hansson, Andrew Morton, Oliver Neukum Cc: rogerable, linux-kernel, linux-mmc, driverdev-devel, wei_wang, micky_ching From: Roger Tseng <rogerable@realtek.com> Fix two possible race condition generated by misuse of del_timer in rtsx_usb_bulk_transfer_sglist() and uninitialized timers before mfd_add_devices in rtsx_usb_probe(). Signed-off-by: Roger Tseng <rogerable@realtek.com> --- drivers/mfd/rtsx_usb.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/mfd/rtsx_usb.c b/drivers/mfd/rtsx_usb.c index b53b9d4..0ca7973 100644 --- a/drivers/mfd/rtsx_usb.c +++ b/drivers/mfd/rtsx_usb.c @@ -67,7 +67,7 @@ static int rtsx_usb_bulk_transfer_sglist(struct rtsx_ucr *ucr, ucr->sg_timer.expires = jiffies + msecs_to_jiffies(timeout); add_timer(&ucr->sg_timer); usb_sg_wait(&ucr->current_sg); - del_timer(&ucr->sg_timer); + del_timer_sync(&ucr->sg_timer); if (act_len) *act_len = ucr->current_sg.bytes; @@ -644,14 +644,14 @@ static int rtsx_usb_probe(struct usb_interface *intf, if (ret) goto out_init_fail; + /* initialize USB SG transfer timer */ + setup_timer(&ucr->sg_timer, rtsx_usb_sg_timed_out, (unsigned long) ucr); + ret = mfd_add_devices(&intf->dev, usb_dev->devnum, rtsx_usb_cells, ARRAY_SIZE(rtsx_usb_cells), NULL, 0, NULL); if (ret) goto out_init_fail; - /* initialize USB SG transfer timer */ - init_timer(&ucr->sg_timer); - setup_timer(&ucr->sg_timer, rtsx_usb_sg_timed_out, (unsigned long) ucr); #ifdef CONFIG_PM intf->needs_remote_wakeup = 1; usb_enable_autosuspend(usb_dev); -- 1.8.2 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v6 2/4] [v6 fix] mfd/rtsx_usb: add comment in rtsx_usb_suspend 2014-04-09 6:15 [PATCH v6 0/4] Add modules for realtek USB card reader rogerable 2014-04-09 6:16 ` [PATCH v6 1/4] [v6 fix] mfd/rtsx_usb: fix possible race condition rogerable @ 2014-04-09 6:16 ` rogerable 2014-04-09 6:16 ` [PATCH v6 3/4] mmc: Add realtek USB sdmmc host driver rogerable 2014-04-09 6:16 ` [PATCH v6 4/4] memstick: Add realtek USB memstick " rogerable 3 siblings, 0 replies; 6+ messages in thread From: rogerable @ 2014-04-09 6:16 UTC (permalink / raw) To: Samuel Ortiz, Lee Jones, Chris Ball, Greg Kroah-Hartman, Maxim Levitsky, Alex Dubov, Dan Carpenter, Ulf Hansson, Andrew Morton, Oliver Neukum Cc: rogerable, linux-kernel, linux-mmc, driverdev-devel, wei_wang, micky_ching From: Roger Tseng <rogerable@realtek.com> Explain why there is no need to have a symmetric LED turn-on in resume handler while calling rtsx_usb_turn_off_led() in suspend handler. Signed-off-by: Roger Tseng <rogerable@realtek.com> --- drivers/mfd/rtsx_usb.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/mfd/rtsx_usb.c b/drivers/mfd/rtsx_usb.c index 0ca7973..141ea52 100644 --- a/drivers/mfd/rtsx_usb.c +++ b/drivers/mfd/rtsx_usb.c @@ -687,9 +687,15 @@ static int rtsx_usb_suspend(struct usb_interface *intf, pm_message_t message) dev_dbg(&intf->dev, "%s called with pm message 0x%04u\n", __func__, message.event); + /* + * Call to make sure LED is off during suspend to save more power. + * It is NOT a permanent state and could be turned on anytime later. + * Thus no need to call turn_on when resunming. + */ mutex_lock(&ucr->dev_mutex); rtsx_usb_turn_off_led(ucr); mutex_unlock(&ucr->dev_mutex); + return 0; } -- 1.8.2 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v6 3/4] mmc: Add realtek USB sdmmc host driver 2014-04-09 6:15 [PATCH v6 0/4] Add modules for realtek USB card reader rogerable 2014-04-09 6:16 ` [PATCH v6 1/4] [v6 fix] mfd/rtsx_usb: fix possible race condition rogerable 2014-04-09 6:16 ` [PATCH v6 2/4] [v6 fix] mfd/rtsx_usb: add comment in rtsx_usb_suspend rogerable @ 2014-04-09 6:16 ` rogerable 2014-04-09 8:48 ` Ulf Hansson 2014-04-09 6:16 ` [PATCH v6 4/4] memstick: Add realtek USB memstick " rogerable 3 siblings, 1 reply; 6+ messages in thread From: rogerable @ 2014-04-09 6:16 UTC (permalink / raw) To: Samuel Ortiz, Lee Jones, Chris Ball, Greg Kroah-Hartman, Maxim Levitsky, Alex Dubov, Dan Carpenter, Ulf Hansson, Andrew Morton, Oliver Neukum Cc: rogerable, linux-kernel, linux-mmc, driverdev-devel, wei_wang, micky_ching From: Roger Tseng <rogerable@realtek.com> Realtek USB SD/MMC host driver provides mmc host support based on the Realtek USB card reader MFD driver. Signed-off-by: Roger Tseng <rogerable@realtek.com> --- drivers/mmc/host/Kconfig | 7 + drivers/mmc/host/Makefile | 1 + drivers/mmc/host/rtsx_usb_sdmmc.c | 1462 +++++++++++++++++++++++++++++++++++++ 3 files changed, 1470 insertions(+) create mode 100644 drivers/mmc/host/rtsx_usb_sdmmc.c diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index 1384f67..1c01df4 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -689,3 +689,10 @@ config MMC_REALTEK_PCI help Say Y here to include driver code to support SD/MMC card interface of Realtek PCI-E card reader + +config MMC_REALTEK_USB + tristate "Realtek USB SD/MMC Card Interface Driver" + depends on MFD_RTSX_USB + help + Say Y here to include driver code to support SD/MMC card interface + of Realtek RTS5129/39 series card reader diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile index 3483b6b..8194317 100644 --- a/drivers/mmc/host/Makefile +++ b/drivers/mmc/host/Makefile @@ -53,6 +53,7 @@ obj-$(CONFIG_MMC_USHC) += ushc.o obj-$(CONFIG_MMC_WMT) += wmt-sdmmc.o obj-$(CONFIG_MMC_REALTEK_PCI) += rtsx_pci_sdmmc.o +obj-$(CONFIG_MMC_REALTEK_USB) += rtsx_usb_sdmmc.o obj-$(CONFIG_MMC_SDHCI_PLTFM) += sdhci-pltfm.o obj-$(CONFIG_MMC_SDHCI_CNS3XXX) += sdhci-cns3xxx.o diff --git a/drivers/mmc/host/rtsx_usb_sdmmc.c b/drivers/mmc/host/rtsx_usb_sdmmc.c new file mode 100644 index 0000000..37f58b5 --- /dev/null +++ b/drivers/mmc/host/rtsx_usb_sdmmc.c @@ -0,0 +1,1462 @@ +/* Realtek USB SD/MMC Card Interface driver + * + * Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved. + * + * 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, see <http://www.gnu.org/licenses/>. + * + * Author: + * Roger Tseng <rogerable@realtek.com> + */ + +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/delay.h> +#include <linux/platform_device.h> +#include <linux/usb.h> +#include <linux/mmc/host.h> +#include <linux/mmc/mmc.h> +#include <linux/mmc/sd.h> +#include <linux/mmc/sdio.h> +#include <linux/mmc/card.h> +#include <linux/scatterlist.h> +#include <linux/pm_runtime.h> + +#include <linux/mfd/rtsx_usb.h> +#include <asm/unaligned.h> + +#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) +#include <linux/leds.h> +#include <linux/workqueue.h> +#define RTSX_USB_USE_LEDS_CLASS +#endif + +struct rtsx_usb_sdmmc { + struct platform_device *pdev; + struct rtsx_ucr *ucr; + struct mmc_host *mmc; + struct mmc_request *mrq; + + struct mutex host_mutex; + + u8 ssc_depth; + unsigned int clock; + bool vpclk; + bool double_clk; + bool host_removal; + bool card_exist; + bool initial_mode; + bool ddr_mode; + + unsigned char power_mode; + +#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) + struct led_classdev led; + char led_name[32]; + struct work_struct led_work; +#endif +}; + +static inline struct device *sdmmc_dev(struct rtsx_usb_sdmmc *host) +{ + return &(host->pdev->dev); +} + +static inline void sd_clear_error(struct rtsx_usb_sdmmc *host) +{ + struct rtsx_ucr *ucr = host->ucr; + rtsx_usb_ep0_write_register(ucr, CARD_STOP, + SD_STOP | SD_CLR_ERR, + SD_STOP | SD_CLR_ERR); + + rtsx_usb_clear_dma_err(ucr); + rtsx_usb_clear_fsm_err(ucr); +} + +#ifdef DEBUG +static void sd_print_debug_regs(struct rtsx_usb_sdmmc *host) +{ + struct rtsx_ucr *ucr = host->ucr; + u8 val = 0; + + rtsx_usb_ep0_read_register(ucr, SD_STAT1, &val); + dev_dbg(sdmmc_dev(host), "SD_STAT1: 0x%x\n", val); + rtsx_usb_ep0_read_register(ucr, SD_STAT2, &val); + dev_dbg(sdmmc_dev(host), "SD_STAT2: 0x%x\n", val); + rtsx_usb_ep0_read_register(ucr, SD_BUS_STAT, &val); + dev_dbg(sdmmc_dev(host), "SD_BUS_STAT: 0x%x\n", val); +} +#else +#define sd_print_debug_regs(host) +#endif /* DEBUG */ + +static int sd_read_data(struct rtsx_usb_sdmmc *host, struct mmc_command *cmd, + u16 byte_cnt, u8 *buf, int buf_len, int timeout) +{ + struct rtsx_ucr *ucr = host->ucr; + int err; + u8 trans_mode; + + if (!buf) + buf_len = 0; + + rtsx_usb_init_cmd(ucr); + if (cmd != NULL) { + dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD%d\n", __func__ + , cmd->opcode); + if (cmd->opcode == MMC_SEND_TUNING_BLOCK) + trans_mode = SD_TM_AUTO_TUNING; + else + trans_mode = SD_TM_NORMAL_READ; + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, + SD_CMD0, 0xFF, (u8)(cmd->opcode) | 0x40); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, + SD_CMD1, 0xFF, (u8)(cmd->arg >> 24)); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, + SD_CMD2, 0xFF, (u8)(cmd->arg >> 16)); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, + SD_CMD3, 0xFF, (u8)(cmd->arg >> 8)); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, + SD_CMD4, 0xFF, (u8)cmd->arg); + } else { + trans_mode = SD_TM_AUTO_READ_3; + } + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, (u8)byte_cnt); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BYTE_CNT_H, + 0xFF, (u8)(byte_cnt >> 8)); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BLOCK_CNT_L, 0xFF, 1); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BLOCK_CNT_H, 0xFF, 0); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG2, 0xFF, + SD_CALCULATE_CRC7 | SD_CHECK_CRC16 | + SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_6); + if (trans_mode != SD_TM_AUTO_TUNING) + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, + CARD_DATA_SOURCE, 0x01, PINGPONG_BUFFER); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_TRANSFER, + 0xFF, trans_mode | SD_TRANSFER_START); + rtsx_usb_add_cmd(ucr, CHECK_REG_CMD, SD_TRANSFER, + SD_TRANSFER_END, SD_TRANSFER_END); + + if (cmd != NULL) { + rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD1, 0, 0); + rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD2, 0, 0); + rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD3, 0, 0); + rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD4, 0, 0); + } + + err = rtsx_usb_send_cmd(ucr, MODE_CR, timeout); + if (err) { + dev_dbg(sdmmc_dev(host), + "rtsx_usb_send_cmd failed (err = %d)\n", err); + return err; + } + + err = rtsx_usb_get_rsp(ucr, !cmd ? 1 : 5, timeout); + if (err || (ucr->rsp_buf[0] & SD_TRANSFER_ERR)) { + sd_print_debug_regs(host); + + if (!err) { + dev_dbg(sdmmc_dev(host), + "Transfer failed (SD_TRANSFER = %02x)\n", + ucr->rsp_buf[0]); + err = -EIO; + } else { + dev_dbg(sdmmc_dev(host), + "rtsx_usb_get_rsp failed (err = %d)\n", err); + } + + return err; + } + + if (cmd != NULL) { + cmd->resp[0] = get_unaligned_be32(ucr->rsp_buf + 1); + dev_dbg(sdmmc_dev(host), "cmd->resp[0] = 0x%08x\n", + cmd->resp[0]); + } + + if (buf && buf_len) { + /* 2-byte aligned part */ + err = rtsx_usb_read_ppbuf(ucr, buf, byte_cnt - (byte_cnt % 2)); + if (err) { + dev_dbg(sdmmc_dev(host), + "rtsx_usb_read_ppbuf failed (err = %d)\n", err); + return err; + } + + /* unaligned byte */ + if (byte_cnt % 2) + return rtsx_usb_read_register(ucr, + PPBUF_BASE2 + byte_cnt, + buf + byte_cnt - 1); + } + + return 0; +} + +static int sd_write_data(struct rtsx_usb_sdmmc *host, struct mmc_command *cmd, + u16 byte_cnt, u8 *buf, int buf_len, int timeout) +{ + struct rtsx_ucr *ucr = host->ucr; + int err; + u8 trans_mode; + + if (!buf) + buf_len = 0; + + if (buf && buf_len) { + err = rtsx_usb_write_ppbuf(ucr, buf, buf_len); + if (err) { + dev_dbg(sdmmc_dev(host), + "rtsx_usb_write_ppbuf failed (err = %d)\n", + err); + return err; + } + } + + trans_mode = (cmd != NULL) ? SD_TM_AUTO_WRITE_2 : SD_TM_AUTO_WRITE_3; + rtsx_usb_init_cmd(ucr); + + if (cmd != NULL) { + dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD%d\n", __func__, + cmd->opcode); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, + SD_CMD0, 0xFF, (u8)(cmd->opcode) | 0x40); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, + SD_CMD1, 0xFF, (u8)(cmd->arg >> 24)); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, + SD_CMD2, 0xFF, (u8)(cmd->arg >> 16)); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, + SD_CMD3, 0xFF, (u8)(cmd->arg >> 8)); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, + SD_CMD4, 0xFF, (u8)cmd->arg); + } + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, (u8)byte_cnt); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BYTE_CNT_H, + 0xFF, (u8)(byte_cnt >> 8)); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BLOCK_CNT_L, 0xFF, 1); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BLOCK_CNT_H, 0xFF, 0); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG2, 0xFF, + SD_CALCULATE_CRC7 | SD_CHECK_CRC16 | + SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_6); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, + CARD_DATA_SOURCE, 0x01, PINGPONG_BUFFER); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_TRANSFER, 0xFF, + trans_mode | SD_TRANSFER_START); + rtsx_usb_add_cmd(ucr, CHECK_REG_CMD, SD_TRANSFER, + SD_TRANSFER_END, SD_TRANSFER_END); + + if (cmd != NULL) { + rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD1, 0, 0); + rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD2, 0, 0); + rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD3, 0, 0); + rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD4, 0, 0); + } + + err = rtsx_usb_send_cmd(ucr, MODE_CR, timeout); + if (err) { + dev_dbg(sdmmc_dev(host), + "rtsx_usb_send_cmd failed (err = %d)\n", err); + return err; + } + + err = rtsx_usb_get_rsp(ucr, !cmd ? 1 : 5, timeout); + if (err) { + sd_print_debug_regs(host); + dev_dbg(sdmmc_dev(host), + "rtsx_usb_get_rsp failed (err = %d)\n", err); + return err; + } + + if (cmd != NULL) { + cmd->resp[0] = get_unaligned_be32(ucr->rsp_buf + 1); + dev_dbg(sdmmc_dev(host), "cmd->resp[0] = 0x%08x\n", + cmd->resp[0]); + } + + return 0; +} + +static void sd_send_cmd_get_rsp(struct rtsx_usb_sdmmc *host, + struct mmc_command *cmd) +{ + struct rtsx_ucr *ucr = host->ucr; + u8 cmd_idx = (u8)cmd->opcode; + u32 arg = cmd->arg; + int err = 0; + int timeout = 100; + int i; + u8 *ptr; + int stat_idx = 0; + int len = 2; + u8 rsp_type; + + dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD %d, arg = 0x%08x\n", + __func__, cmd_idx, arg); + + /* Response type: + * R0 + * R1, R5, R6, R7 + * R1b + * R2 + * R3, R4 + */ + switch (mmc_resp_type(cmd)) { + case MMC_RSP_NONE: + rsp_type = SD_RSP_TYPE_R0; + break; + case MMC_RSP_R1: + rsp_type = SD_RSP_TYPE_R1; + break; + case MMC_RSP_R1 & ~MMC_RSP_CRC: + rsp_type = SD_RSP_TYPE_R1 | SD_NO_CHECK_CRC7; + break; + case MMC_RSP_R1B: + rsp_type = SD_RSP_TYPE_R1b; + break; + case MMC_RSP_R2: + rsp_type = SD_RSP_TYPE_R2; + break; + case MMC_RSP_R3: + rsp_type = SD_RSP_TYPE_R3; + break; + default: + dev_dbg(sdmmc_dev(host), "cmd->flag is not valid\n"); + err = -EINVAL; + goto out; + } + + if (rsp_type == SD_RSP_TYPE_R1b) + timeout = 3000; + + if (cmd->opcode == SD_SWITCH_VOLTAGE) { + err = rtsx_usb_write_register(ucr, SD_BUS_STAT, + SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP, + SD_CLK_TOGGLE_EN); + if (err) + goto out; + } + + rtsx_usb_init_cmd(ucr); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CMD0, 0xFF, 0x40 | cmd_idx); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CMD1, 0xFF, (u8)(arg >> 24)); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CMD2, 0xFF, (u8)(arg >> 16)); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CMD3, 0xFF, (u8)(arg >> 8)); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CMD4, 0xFF, (u8)arg); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG2, 0xFF, rsp_type); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_DATA_SOURCE, + 0x01, PINGPONG_BUFFER); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_TRANSFER, + 0xFF, SD_TM_CMD_RSP | SD_TRANSFER_START); + rtsx_usb_add_cmd(ucr, CHECK_REG_CMD, SD_TRANSFER, + SD_TRANSFER_END | SD_STAT_IDLE, + SD_TRANSFER_END | SD_STAT_IDLE); + + if (rsp_type == SD_RSP_TYPE_R2) { + /* Read data from ping-pong buffer */ + for (i = PPBUF_BASE2; i < PPBUF_BASE2 + 16; i++) + rtsx_usb_add_cmd(ucr, READ_REG_CMD, (u16)i, 0, 0); + stat_idx = 16; + } else if (rsp_type != SD_RSP_TYPE_R0) { + /* Read data from SD_CMDx registers */ + for (i = SD_CMD0; i <= SD_CMD4; i++) + rtsx_usb_add_cmd(ucr, READ_REG_CMD, (u16)i, 0, 0); + stat_idx = 5; + } + len += stat_idx; + + rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_STAT1, 0, 0); + + err = rtsx_usb_send_cmd(ucr, MODE_CR, 100); + if (err) { + dev_dbg(sdmmc_dev(host), + "rtsx_usb_send_cmd error (err = %d)\n", err); + goto out; + } + + err = rtsx_usb_get_rsp(ucr, len, timeout); + if (err || (ucr->rsp_buf[0] & SD_TRANSFER_ERR)) { + sd_print_debug_regs(host); + sd_clear_error(host); + + if (!err) { + dev_dbg(sdmmc_dev(host), + "Transfer failed (SD_TRANSFER = %02x)\n", + ucr->rsp_buf[0]); + err = -EIO; + } else { + dev_dbg(sdmmc_dev(host), + "rtsx_usb_get_rsp failed (err = %d)\n", err); + } + + goto out; + } + + if (rsp_type == SD_RSP_TYPE_R0) { + err = 0; + goto out; + } + + /* Skip result of CHECK_REG_CMD */ + ptr = ucr->rsp_buf + 1; + + /* Check (Start,Transmission) bit of Response */ + if ((ptr[0] & 0xC0) != 0) { + err = -EILSEQ; + dev_dbg(sdmmc_dev(host), "Invalid response bit\n"); + goto out; + } + + /* Check CRC7 */ + if (!(rsp_type & SD_NO_CHECK_CRC7)) { + if (ptr[stat_idx] & SD_CRC7_ERR) { + err = -EILSEQ; + dev_dbg(sdmmc_dev(host), "CRC7 error\n"); + goto out; + } + } + + if (rsp_type == SD_RSP_TYPE_R2) { + for (i = 0; i < 4; i++) { + cmd->resp[i] = get_unaligned_be32(ptr + 1 + i * 4); + dev_dbg(sdmmc_dev(host), "cmd->resp[%d] = 0x%08x\n", + i, cmd->resp[i]); + } + } else { + cmd->resp[0] = get_unaligned_be32(ptr + 1); + dev_dbg(sdmmc_dev(host), "cmd->resp[0] = 0x%08x\n", + cmd->resp[0]); + } + +out: + cmd->error = err; +} + +static int sd_rw_multi(struct rtsx_usb_sdmmc *host, struct mmc_request *mrq) +{ + struct rtsx_ucr *ucr = host->ucr; + struct mmc_data *data = mrq->data; + int read = (data->flags & MMC_DATA_READ) ? 1 : 0; + u8 cfg2, trans_mode; + int err; + u8 flag; + size_t data_len = data->blksz * data->blocks; + unsigned int pipe; + + if (read) { + dev_dbg(sdmmc_dev(host), "%s: read %zu bytes\n", + __func__, data_len); + cfg2 = SD_CALCULATE_CRC7 | SD_CHECK_CRC16 | + SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_0; + trans_mode = SD_TM_AUTO_READ_3; + } else { + dev_dbg(sdmmc_dev(host), "%s: write %zu bytes\n", + __func__, data_len); + cfg2 = SD_NO_CALCULATE_CRC7 | SD_CHECK_CRC16 | + SD_NO_WAIT_BUSY_END | SD_NO_CHECK_CRC7 | SD_RSP_LEN_0; + trans_mode = SD_TM_AUTO_WRITE_3; + } + + rtsx_usb_init_cmd(ucr); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, 0x00); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BYTE_CNT_H, 0xFF, 0x02); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BLOCK_CNT_L, + 0xFF, (u8)data->blocks); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BLOCK_CNT_H, + 0xFF, (u8)(data->blocks >> 8)); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_DATA_SOURCE, + 0x01, RING_BUFFER); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_TC3, + 0xFF, (u8)(data_len >> 24)); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_TC2, + 0xFF, (u8)(data_len >> 16)); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_TC1, + 0xFF, (u8)(data_len >> 8)); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_TC0, + 0xFF, (u8)data_len); + if (read) { + flag = MODE_CDIR; + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_CTL, + 0x03 | DMA_PACK_SIZE_MASK, + DMA_DIR_FROM_CARD | DMA_EN | DMA_512); + } else { + flag = MODE_CDOR; + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_CTL, + 0x03 | DMA_PACK_SIZE_MASK, + DMA_DIR_TO_CARD | DMA_EN | DMA_512); + } + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG2, 0xFF, cfg2); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_TRANSFER, 0xFF, + trans_mode | SD_TRANSFER_START); + rtsx_usb_add_cmd(ucr, CHECK_REG_CMD, SD_TRANSFER, + SD_TRANSFER_END, SD_TRANSFER_END); + + err = rtsx_usb_send_cmd(ucr, flag, 100); + if (err) + return err; + + if (read) + pipe = usb_rcvbulkpipe(ucr->pusb_dev, EP_BULK_IN); + else + pipe = usb_sndbulkpipe(ucr->pusb_dev, EP_BULK_OUT); + + err = rtsx_usb_transfer_data(ucr, pipe, data->sg, data_len, + data->sg_len, NULL, 10000); + if (err) { + dev_dbg(sdmmc_dev(host), "rtsx_usb_transfer_data error %d\n" + , err); + sd_clear_error(host); + return err; + } + + return rtsx_usb_get_rsp(ucr, 1, 2000); +} + +static inline void sd_enable_initial_mode(struct rtsx_usb_sdmmc *host) +{ + rtsx_usb_write_register(host->ucr, SD_CFG1, + SD_CLK_DIVIDE_MASK, SD_CLK_DIVIDE_128); +} + +static inline void sd_disable_initial_mode(struct rtsx_usb_sdmmc *host) +{ + rtsx_usb_write_register(host->ucr, SD_CFG1, + SD_CLK_DIVIDE_MASK, SD_CLK_DIVIDE_0); +} + +static void sd_normal_rw(struct rtsx_usb_sdmmc *host, + struct mmc_request *mrq) +{ + struct mmc_command *cmd = mrq->cmd; + struct mmc_data *data = mrq->data; + u8 *buf; + + buf = kzalloc(data->blksz, GFP_NOIO); + if (!buf) { + cmd->error = -ENOMEM; + return; + } + + if (data->flags & MMC_DATA_READ) { + if (host->initial_mode) + sd_disable_initial_mode(host); + + cmd->error = sd_read_data(host, cmd, (u16)data->blksz, buf, + data->blksz, 200); + + if (host->initial_mode) + sd_enable_initial_mode(host); + + sg_copy_from_buffer(data->sg, data->sg_len, buf, data->blksz); + } else { + sg_copy_to_buffer(data->sg, data->sg_len, buf, data->blksz); + + cmd->error = sd_write_data(host, cmd, (u16)data->blksz, buf, + data->blksz, 200); + } + + kfree(buf); +} + +static int sd_change_phase(struct rtsx_usb_sdmmc *host, u8 sample_point, int tx) +{ + struct rtsx_ucr *ucr = host->ucr; + int err; + + dev_dbg(sdmmc_dev(host), "%s: %s sample_point = %d\n", + __func__, tx ? "TX" : "RX", sample_point); + + rtsx_usb_init_cmd(ucr); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CLK_DIV, CLK_CHANGE, CLK_CHANGE); + + if (tx) + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_VPCLK0_CTL, + 0x0F, sample_point); + else + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_VPCLK1_CTL, + 0x0F, sample_point); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_VPCLK0_CTL, PHASE_NOT_RESET, 0); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_VPCLK0_CTL, + PHASE_NOT_RESET, PHASE_NOT_RESET); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CLK_DIV, CLK_CHANGE, 0); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG1, SD_ASYNC_FIFO_RST, 0); + + err = rtsx_usb_send_cmd(ucr, MODE_C, 100); + if (err) + return err; + + return 0; +} + +static inline u32 get_phase_point(u32 phase_map, unsigned int idx) +{ + idx &= MAX_PHASE; + return phase_map & (1 << idx); +} + +static int get_phase_len(u32 phase_map, unsigned int idx) +{ + int i; + + for (i = 0; i < MAX_PHASE + 1; i++) { + if (get_phase_point(phase_map, idx + i) == 0) + return i; + } + return MAX_PHASE + 1; +} + +static u8 sd_search_final_phase(struct rtsx_usb_sdmmc *host, u32 phase_map) +{ + int start = 0, len = 0; + int start_final = 0, len_final = 0; + u8 final_phase = 0xFF; + + if (phase_map == 0) { + dev_dbg(sdmmc_dev(host), "Phase: [map:%x]\n", phase_map); + return final_phase; + } + + while (start < MAX_PHASE + 1) { + len = get_phase_len(phase_map, start); + if (len_final < len) { + start_final = start; + len_final = len; + } + start += len ? len : 1; + } + + final_phase = (start_final + len_final / 2) & MAX_PHASE; + dev_dbg(sdmmc_dev(host), "Phase: [map:%x] [maxlen:%d] [final:%d]\n", + phase_map, len_final, final_phase); + + return final_phase; +} + +static void sd_wait_data_idle(struct rtsx_usb_sdmmc *host) +{ + int err, i; + u8 val = 0; + + for (i = 0; i < 100; i++) { + err = rtsx_usb_ep0_read_register(host->ucr, + SD_DATA_STATE, &val); + if (val & SD_DATA_IDLE) + return; + + usleep_range(100, 1000); + } +} + +static int sd_tuning_rx_cmd(struct rtsx_usb_sdmmc *host, + u8 opcode, u8 sample_point) +{ + int err; + struct mmc_command cmd = {0}; + + err = sd_change_phase(host, sample_point, 0); + if (err) + return err; + + cmd.opcode = MMC_SEND_TUNING_BLOCK; + err = sd_read_data(host, &cmd, 0x40, NULL, 0, 100); + if (err) { + /* Wait till SD DATA IDLE */ + sd_wait_data_idle(host); + sd_clear_error(host); + return err; + } + + return 0; +} + +static void sd_tuning_phase(struct rtsx_usb_sdmmc *host, + u8 opcode, u16 *phase_map) +{ + int err, i; + u16 raw_phase_map = 0; + + for (i = MAX_PHASE; i >= 0; i--) { + err = sd_tuning_rx_cmd(host, opcode, (u8)i); + if (!err) + raw_phase_map |= 1 << i; + } + + if (phase_map) + *phase_map = raw_phase_map; +} + +static int sd_tuning_rx(struct rtsx_usb_sdmmc *host, u8 opcode) +{ + int err, i; + u16 raw_phase_map[RX_TUNING_CNT] = {0}, phase_map; + u8 final_phase; + + /* setting fixed default TX phase */ + err = sd_change_phase(host, 0x01, 1); + if (err) { + dev_dbg(sdmmc_dev(host), "TX phase setting failed\n"); + return err; + } + + /* tuning RX phase */ + for (i = 0; i < RX_TUNING_CNT; i++) { + sd_tuning_phase(host, opcode, &(raw_phase_map[i])); + + if (raw_phase_map[i] == 0) + break; + } + + phase_map = 0xFFFF; + for (i = 0; i < RX_TUNING_CNT; i++) { + dev_dbg(sdmmc_dev(host), "RX raw_phase_map[%d] = 0x%04x\n", + i, raw_phase_map[i]); + phase_map &= raw_phase_map[i]; + } + dev_dbg(sdmmc_dev(host), "RX phase_map = 0x%04x\n", phase_map); + + if (phase_map) { + final_phase = sd_search_final_phase(host, phase_map); + if (final_phase == 0xFF) + return -EINVAL; + + err = sd_change_phase(host, final_phase, 0); + if (err) + return err; + } else { + return -EINVAL; + } + + return 0; +} + +static int sdmmc_get_ro(struct mmc_host *mmc) +{ + struct rtsx_usb_sdmmc *host = mmc_priv(mmc); + struct rtsx_ucr *ucr = host->ucr; + int err; + u16 val; + + if (host->host_removal) + return -ENOMEDIUM; + + mutex_lock(&ucr->dev_mutex); + + /* Check SD card detect */ + err = rtsx_usb_get_card_status(ucr, &val); + + mutex_unlock(&ucr->dev_mutex); + + + /* Treat failed detection as non-ro */ + if (err) + return 0; + + if (val & SD_WP) + return 1; + + return 0; +} + +static int sdmmc_get_cd(struct mmc_host *mmc) +{ + struct rtsx_usb_sdmmc *host = mmc_priv(mmc); + struct rtsx_ucr *ucr = host->ucr; + int err; + u16 val; + + if (host->host_removal) + return -ENOMEDIUM; + + mutex_lock(&ucr->dev_mutex); + + /* Check SD card detect */ + err = rtsx_usb_get_card_status(ucr, &val); + + mutex_unlock(&ucr->dev_mutex); + + /* Treat failed detection as non-exist */ + if (err) + goto no_card; + + if (val & SD_CD) { + host->card_exist = true; + return 1; + } + +no_card: + host->card_exist = false; + return 0; +} + +static void sdmmc_request(struct mmc_host *mmc, struct mmc_request *mrq) +{ + struct rtsx_usb_sdmmc *host = mmc_priv(mmc); + struct rtsx_ucr *ucr = host->ucr; + struct mmc_command *cmd = mrq->cmd; + struct mmc_data *data = mrq->data; + unsigned int data_size = 0; + + dev_dbg(sdmmc_dev(host), "%s\n", __func__); + + if (host->host_removal) { + cmd->error = -ENOMEDIUM; + goto finish; + } + + if ((!host->card_exist)) { + cmd->error = -ENOMEDIUM; + goto finish_detect_card; + } + + /* + * Reject SDIO CMDs to speed up card identification + * since unsupported + */ + if (cmd->opcode == SD_IO_SEND_OP_COND || + cmd->opcode == SD_IO_RW_DIRECT || + cmd->opcode == SD_IO_RW_EXTENDED) { + cmd->error = -EINVAL; + goto finish; + } + + mutex_lock(&ucr->dev_mutex); + + mutex_lock(&host->host_mutex); + host->mrq = mrq; + mutex_unlock(&host->host_mutex); + + if (mrq->data) + data_size = data->blocks * data->blksz; + + if (!data_size) { + sd_send_cmd_get_rsp(host, cmd); + } else if ((!(data_size % 512) && cmd->opcode != MMC_SEND_EXT_CSD) || + mmc_op_multi(cmd->opcode)) { + sd_send_cmd_get_rsp(host, cmd); + + if (!cmd->error) { + sd_rw_multi(host, mrq); + + if (mmc_op_multi(cmd->opcode) && mrq->stop) { + sd_send_cmd_get_rsp(host, mrq->stop); + rtsx_usb_write_register(ucr, MC_FIFO_CTL, + FIFO_FLUSH, FIFO_FLUSH); + } + } + } else { + sd_normal_rw(host, mrq); + } + + if (mrq->data) { + if (cmd->error || data->error) + data->bytes_xfered = 0; + else + data->bytes_xfered = data->blocks * data->blksz; + } + + mutex_unlock(&ucr->dev_mutex); + +finish_detect_card: + if (cmd->error) { + /* + * detect card when fail to update card existence state and + * speed up card removal when retry + */ + sdmmc_get_cd(mmc); + dev_dbg(sdmmc_dev(host), "cmd->error = %d\n", cmd->error); + } + +finish: + mutex_lock(&host->host_mutex); + host->mrq = NULL; + mutex_unlock(&host->host_mutex); + + mmc_request_done(mmc, mrq); +} + +static int sd_set_bus_width(struct rtsx_usb_sdmmc *host, + unsigned char bus_width) +{ + int err = 0; + u8 width[] = { + [MMC_BUS_WIDTH_1] = SD_BUS_WIDTH_1BIT, + [MMC_BUS_WIDTH_4] = SD_BUS_WIDTH_4BIT, + [MMC_BUS_WIDTH_8] = SD_BUS_WIDTH_8BIT, + }; + + if (bus_width <= MMC_BUS_WIDTH_8) + err = rtsx_usb_write_register(host->ucr, SD_CFG1, + 0x03, width[bus_width]); + + return err; +} + +static int sd_pull_ctl_disable_lqfp48(struct rtsx_ucr *ucr) +{ + rtsx_usb_init_cmd(ucr); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0x55); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0x55); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0x95); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x55); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x55); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0xA5); + + return rtsx_usb_send_cmd(ucr, MODE_C, 100); +} + +static int sd_pull_ctl_disable_qfn24(struct rtsx_ucr *ucr) +{ + rtsx_usb_init_cmd(ucr); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0x65); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0x55); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0x95); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x55); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x56); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0x59); + + return rtsx_usb_send_cmd(ucr, MODE_C, 100); +} + +static int sd_pull_ctl_enable_lqfp48(struct rtsx_ucr *ucr) +{ + rtsx_usb_init_cmd(ucr); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0xAA); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0xAA); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0xA9); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x55); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x55); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0xA5); + + return rtsx_usb_send_cmd(ucr, MODE_C, 100); +} + +static int sd_pull_ctl_enable_qfn24(struct rtsx_ucr *ucr) +{ + rtsx_usb_init_cmd(ucr); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0xA5); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0x9A); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0xA5); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x9A); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x65); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0x5A); + + return rtsx_usb_send_cmd(ucr, MODE_C, 100); +} + +static int sd_power_on(struct rtsx_usb_sdmmc *host) +{ + struct rtsx_ucr *ucr = host->ucr; + int err; + + dev_dbg(sdmmc_dev(host), "%s\n", __func__); + rtsx_usb_init_cmd(ucr); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_SELECT, 0x07, SD_MOD_SEL); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_SHARE_MODE, + CARD_SHARE_MASK, CARD_SHARE_SD); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_EN, + SD_CLK_EN, SD_CLK_EN); + err = rtsx_usb_send_cmd(ucr, MODE_C, 100); + if (err) + return err; + + if (CHECK_PKG(ucr, LQFP48)) + err = sd_pull_ctl_enable_lqfp48(ucr); + else + err = sd_pull_ctl_enable_qfn24(ucr); + if (err) + return err; + + err = rtsx_usb_write_register(ucr, CARD_PWR_CTL, + POWER_MASK, PARTIAL_POWER_ON); + if (err) + return err; + + usleep_range(800, 1000); + + rtsx_usb_init_cmd(ucr); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PWR_CTL, + POWER_MASK|LDO3318_PWR_MASK, POWER_ON|LDO_ON); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_OE, + SD_OUTPUT_EN, SD_OUTPUT_EN); + + return rtsx_usb_send_cmd(ucr, MODE_C, 100); +} + +static int sd_power_off(struct rtsx_usb_sdmmc *host) +{ + struct rtsx_ucr *ucr = host->ucr; + int err; + + dev_dbg(sdmmc_dev(host), "%s\n", __func__); + rtsx_usb_init_cmd(ucr); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_EN, SD_CLK_EN, 0); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_OE, SD_OUTPUT_EN, 0); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PWR_CTL, + POWER_MASK, POWER_OFF); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PWR_CTL, + POWER_MASK|LDO3318_PWR_MASK, POWER_OFF|LDO_SUSPEND); + + err = rtsx_usb_send_cmd(ucr, MODE_C, 100); + if (err) + return err; + + if (CHECK_PKG(ucr, LQFP48)) + return sd_pull_ctl_disable_lqfp48(ucr); + return sd_pull_ctl_disable_qfn24(ucr); +} + +static int sd_set_power_mode(struct rtsx_usb_sdmmc *host, + unsigned char power_mode) +{ + int err; + + if (power_mode != MMC_POWER_OFF) + power_mode = MMC_POWER_ON; + + if (power_mode == host->power_mode) + return 0; + + if (power_mode == MMC_POWER_OFF) { + err = sd_power_off(host); + pm_runtime_put(sdmmc_dev(host)); + } else { + pm_runtime_get_sync(sdmmc_dev(host)); + err = sd_power_on(host); + } + + if (!err) + host->power_mode = power_mode; + + return err; +} + +static int sd_set_timing(struct rtsx_usb_sdmmc *host, + unsigned char timing, bool *ddr_mode) +{ + struct rtsx_ucr *ucr = host->ucr; + int err; + + *ddr_mode = false; + + rtsx_usb_init_cmd(ucr); + + switch (timing) { + case MMC_TIMING_UHS_SDR104: + case MMC_TIMING_UHS_SDR50: + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG1, + 0x0C | SD_ASYNC_FIFO_RST, + SD_30_MODE | SD_ASYNC_FIFO_RST); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF, + CRC_VAR_CLK0 | SD30_FIX_CLK | SAMPLE_VAR_CLK1); + break; + + case MMC_TIMING_UHS_DDR50: + *ddr_mode = true; + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG1, + 0x0C | SD_ASYNC_FIFO_RST, + SD_DDR_MODE | SD_ASYNC_FIFO_RST); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF, + CRC_VAR_CLK0 | SD30_FIX_CLK | SAMPLE_VAR_CLK1); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_PUSH_POINT_CTL, + DDR_VAR_TX_CMD_DAT, DDR_VAR_TX_CMD_DAT); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_SAMPLE_POINT_CTL, + DDR_VAR_RX_DAT | DDR_VAR_RX_CMD, + DDR_VAR_RX_DAT | DDR_VAR_RX_CMD); + break; + + case MMC_TIMING_MMC_HS: + case MMC_TIMING_SD_HS: + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG1, + 0x0C, SD_20_MODE); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF, + CRC_FIX_CLK | SD30_VAR_CLK0 | SAMPLE_VAR_CLK1); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_PUSH_POINT_CTL, + SD20_TX_SEL_MASK, SD20_TX_14_AHEAD); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_SAMPLE_POINT_CTL, + SD20_RX_SEL_MASK, SD20_RX_14_DELAY); + break; + + default: + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, + SD_CFG1, 0x0C, SD_20_MODE); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF, + CRC_FIX_CLK | SD30_VAR_CLK0 | SAMPLE_VAR_CLK1); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, + SD_PUSH_POINT_CTL, 0xFF, 0); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_SAMPLE_POINT_CTL, + SD20_RX_SEL_MASK, SD20_RX_POS_EDGE); + break; + } + + err = rtsx_usb_send_cmd(ucr, MODE_C, 100); + + return err; +} + +static void sdmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) +{ + struct rtsx_usb_sdmmc *host = mmc_priv(mmc); + struct rtsx_ucr *ucr = host->ucr; + + dev_dbg(sdmmc_dev(host), "%s\n", __func__); + mutex_lock(&ucr->dev_mutex); + + if (rtsx_usb_card_exclusive_check(ucr, RTSX_USB_SD_CARD)) { + mutex_unlock(&ucr->dev_mutex); + return; + } + + sd_set_power_mode(host, ios->power_mode); + sd_set_bus_width(host, ios->bus_width); + sd_set_timing(host, ios->timing, &host->ddr_mode); + + host->vpclk = false; + host->double_clk = true; + + switch (ios->timing) { + case MMC_TIMING_UHS_SDR104: + case MMC_TIMING_UHS_SDR50: + host->ssc_depth = SSC_DEPTH_2M; + host->vpclk = true; + host->double_clk = false; + break; + case MMC_TIMING_UHS_DDR50: + case MMC_TIMING_UHS_SDR25: + host->ssc_depth = SSC_DEPTH_1M; + break; + default: + host->ssc_depth = SSC_DEPTH_512K; + break; + } + + host->initial_mode = (ios->clock <= 1000000) ? true : false; + host->clock = ios->clock; + + rtsx_usb_switch_clock(host->ucr, host->clock, host->ssc_depth, + host->initial_mode, host->double_clk, host->vpclk); + + mutex_unlock(&ucr->dev_mutex); + dev_dbg(sdmmc_dev(host), "%s end\n", __func__); +} + +static int sdmmc_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios) +{ + struct rtsx_usb_sdmmc *host = mmc_priv(mmc); + struct rtsx_ucr *ucr = host->ucr; + int err = 0; + + dev_dbg(sdmmc_dev(host), "%s: signal_voltage = %d\n", + __func__, ios->signal_voltage); + + if (host->host_removal) + return -ENOMEDIUM; + + if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_120) + return -EPERM; + + mutex_lock(&ucr->dev_mutex); + + err = rtsx_usb_card_exclusive_check(ucr, RTSX_USB_SD_CARD); + if (err) { + mutex_unlock(&ucr->dev_mutex); + return err; + } + + /* Let mmc core do the busy checking, simply stop the forced-toggle + * clock(while issuing CMD11) and switch voltage. + */ + rtsx_usb_init_cmd(ucr); + + if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_330) { + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_PAD_CTL, + SD_IO_USING_1V8, SD_IO_USING_3V3); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, LDO_POWER_CFG, + TUNE_SD18_MASK, TUNE_SD18_3V3); + } else { + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BUS_STAT, + SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP, + SD_CLK_FORCE_STOP); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_PAD_CTL, + SD_IO_USING_1V8, SD_IO_USING_1V8); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, LDO_POWER_CFG, + TUNE_SD18_MASK, TUNE_SD18_1V8); + } + + err = rtsx_usb_send_cmd(ucr, MODE_C, 100); + mutex_unlock(&ucr->dev_mutex); + + return err; +} + +static int sdmmc_card_busy(struct mmc_host *mmc) +{ + struct rtsx_usb_sdmmc *host = mmc_priv(mmc); + struct rtsx_ucr *ucr = host->ucr; + int err; + u8 stat; + u8 mask = SD_DAT3_STATUS | SD_DAT2_STATUS | SD_DAT1_STATUS + | SD_DAT0_STATUS; + + dev_dbg(sdmmc_dev(host), "%s\n", __func__); + + mutex_lock(&ucr->dev_mutex); + + err = rtsx_usb_write_register(ucr, SD_BUS_STAT, + SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP, + SD_CLK_TOGGLE_EN); + if (err) + goto out; + + mdelay(1); + + err = rtsx_usb_read_register(ucr, SD_BUS_STAT, &stat); + if (err) + goto out; + + err = rtsx_usb_write_register(ucr, SD_BUS_STAT, + SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP, 0); +out: + mutex_unlock(&ucr->dev_mutex); + + if (err) + return err; + + /* check if any pin between dat[0:3] is low */ + if ((stat & mask) != mask) + return 1; + else + return 0; +} + +static int sdmmc_execute_tuning(struct mmc_host *mmc, u32 opcode) +{ + struct rtsx_usb_sdmmc *host = mmc_priv(mmc); + struct rtsx_ucr *ucr = host->ucr; + int err = 0; + + if (host->host_removal) + return -ENOMEDIUM; + + mutex_lock(&ucr->dev_mutex); + + if (!host->ddr_mode) + err = sd_tuning_rx(host, MMC_SEND_TUNING_BLOCK); + + mutex_unlock(&ucr->dev_mutex); + + return err; +} + +static const struct mmc_host_ops rtsx_usb_sdmmc_ops = { + .request = sdmmc_request, + .set_ios = sdmmc_set_ios, + .get_ro = sdmmc_get_ro, + .get_cd = sdmmc_get_cd, + .start_signal_voltage_switch = sdmmc_switch_voltage, + .card_busy = sdmmc_card_busy, + .execute_tuning = sdmmc_execute_tuning, +}; + +#ifdef RTSX_USB_USE_LEDS_CLASS +static void rtsx_usb_led_control(struct led_classdev *led, + enum led_brightness brightness) +{ + struct rtsx_usb_sdmmc *host = container_of(led, + struct rtsx_usb_sdmmc, led); + + if (host->host_removal) + return; + + host->led.brightness = brightness; + schedule_work(&host->led_work); +} + +static void rtsx_usb_update_led(struct work_struct *work) +{ + struct rtsx_usb_sdmmc *host = + container_of(work, struct rtsx_usb_sdmmc, led_work); + struct rtsx_ucr *ucr = host->ucr; + + mutex_lock(&ucr->dev_mutex); + + if (host->led.brightness == LED_OFF) + rtsx_usb_turn_off_led(ucr); + else + rtsx_usb_turn_on_led(ucr); + + mutex_unlock(&ucr->dev_mutex); +} +#endif + +static void rtsx_usb_init_host(struct rtsx_usb_sdmmc *host) +{ + struct mmc_host *mmc = host->mmc; + + mmc->f_min = 250000; + mmc->f_max = 208000000; + mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195; + mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SD_HIGHSPEED | + MMC_CAP_MMC_HIGHSPEED | MMC_CAP_BUS_WIDTH_TEST | + MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | MMC_CAP_UHS_SDR50 | + MMC_CAP_NEEDS_POLL; + + mmc->max_current_330 = 400; + mmc->max_current_180 = 800; + mmc->ops = &rtsx_usb_sdmmc_ops; + mmc->max_segs = 256; + mmc->max_seg_size = 65536; + mmc->max_blk_size = 512; + mmc->max_blk_count = 65535; + mmc->max_req_size = 524288; + + host->power_mode = MMC_POWER_OFF; +} + +static int rtsx_usb_sdmmc_drv_probe(struct platform_device *pdev) +{ + struct mmc_host *mmc; + struct rtsx_usb_sdmmc *host; + struct rtsx_ucr *ucr; +#ifdef RTSX_USB_USE_LEDS_CLASS + int err; +#endif + + ucr = usb_get_intfdata(to_usb_interface(pdev->dev.parent)); + if (!ucr) + return -ENXIO; + + dev_dbg(&(pdev->dev), ": Realtek USB SD/MMC controller found\n"); + + mmc = mmc_alloc_host(sizeof(*host), &pdev->dev); + if (!mmc) + return -ENOMEM; + + host = mmc_priv(mmc); + host->ucr = ucr; + host->mmc = mmc; + host->pdev = pdev; + platform_set_drvdata(pdev, host); + + mutex_init(&host->host_mutex); + rtsx_usb_init_host(host); + pm_runtime_enable(&pdev->dev); + +#ifdef RTSX_USB_USE_LEDS_CLASS + snprintf(host->led_name, sizeof(host->led_name), + "%s::", mmc_hostname(mmc)); + host->led.name = host->led_name; + host->led.brightness = LED_OFF; + host->led.default_trigger = mmc_hostname(mmc); + host->led.brightness_set = rtsx_usb_led_control; + + err = led_classdev_register(mmc_dev(mmc), &host->led); + if (err) + dev_err(&(pdev->dev), + "Failed to register LED device: %d\n", err); + INIT_WORK(&host->led_work, rtsx_usb_update_led); + +#endif + mmc_add_host(mmc); + + return 0; +} + +static int rtsx_usb_sdmmc_drv_remove(struct platform_device *pdev) +{ + struct rtsx_usb_sdmmc *host = platform_get_drvdata(pdev); + struct mmc_host *mmc; + + if (!host) + return 0; + + mmc = host->mmc; + host->host_removal = true; + + mutex_lock(&host->host_mutex); + if (host->mrq) { + dev_dbg(&(pdev->dev), + "%s: Controller removed during transfer\n", + mmc_hostname(mmc)); + host->mrq->cmd->error = -ENOMEDIUM; + if (host->mrq->stop) + host->mrq->stop->error = -ENOMEDIUM; + mmc_request_done(mmc, host->mrq); + } + mutex_unlock(&host->host_mutex); + + mmc_remove_host(mmc); + +#ifdef RTSX_USB_USE_LEDS_CLASS + cancel_work_sync(&host->led_work); + led_classdev_unregister(&host->led); +#endif + + mmc_free_host(mmc); + + /* Balance possible unbalanced usage count + * e.g. unconditional module removal + */ + if (pm_runtime_active(&pdev->dev)) + pm_runtime_put(&pdev->dev); + + pm_runtime_disable(&pdev->dev); + platform_set_drvdata(pdev, NULL); + + dev_dbg(&(pdev->dev), + ": Realtek USB SD/MMC module has been removed\n"); + + return 0; +} + +static struct platform_device_id rtsx_usb_sdmmc_ids[] = { + { + .name = "rtsx_usb_sdmmc", + }, { + /* sentinel */ + } +}; +MODULE_DEVICE_TABLE(platform, rtsx_usb_sdmmc_ids); + +static struct platform_driver rtsx_usb_sdmmc_driver = { + .probe = rtsx_usb_sdmmc_drv_probe, + .remove = rtsx_usb_sdmmc_drv_remove, + .id_table = rtsx_usb_sdmmc_ids, + .driver = { + .owner = THIS_MODULE, + .name = "rtsx_usb_sdmmc", + }, +}; +module_platform_driver(rtsx_usb_sdmmc_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Roger Tseng <rogerable@realtek.com>"); +MODULE_DESCRIPTION("Realtek USB SD/MMC Card Host Driver"); -- 1.8.2 ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v6 3/4] mmc: Add realtek USB sdmmc host driver 2014-04-09 6:16 ` [PATCH v6 3/4] mmc: Add realtek USB sdmmc host driver rogerable @ 2014-04-09 8:48 ` Ulf Hansson 0 siblings, 0 replies; 6+ messages in thread From: Ulf Hansson @ 2014-04-09 8:48 UTC (permalink / raw) To: Roger Cc: Samuel Ortiz, Lee Jones, Chris Ball, Greg Kroah-Hartman, Maxim Levitsky, Alex Dubov, Dan Carpenter, Andrew Morton, Oliver Neukum, linux-kernel, linux-mmc, driverdev-devel, Wei WANG, micky On 9 April 2014 08:16, <rogerable@realtek.com> wrote: > From: Roger Tseng <rogerable@realtek.com> > > Realtek USB SD/MMC host driver provides mmc host support based on the Realtek > USB card reader MFD driver. > > Signed-off-by: Roger Tseng <rogerable@realtek.com> > --- > drivers/mmc/host/Kconfig | 7 + > drivers/mmc/host/Makefile | 1 + > drivers/mmc/host/rtsx_usb_sdmmc.c | 1462 +++++++++++++++++++++++++++++++++++++ > 3 files changed, 1470 insertions(+) > create mode 100644 drivers/mmc/host/rtsx_usb_sdmmc.c > > diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig > index 1384f67..1c01df4 100644 > --- a/drivers/mmc/host/Kconfig > +++ b/drivers/mmc/host/Kconfig > @@ -689,3 +689,10 @@ config MMC_REALTEK_PCI > help > Say Y here to include driver code to support SD/MMC card interface > of Realtek PCI-E card reader > + > +config MMC_REALTEK_USB > + tristate "Realtek USB SD/MMC Card Interface Driver" > + depends on MFD_RTSX_USB > + help > + Say Y here to include driver code to support SD/MMC card interface > + of Realtek RTS5129/39 series card reader > diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile > index 3483b6b..8194317 100644 > --- a/drivers/mmc/host/Makefile > +++ b/drivers/mmc/host/Makefile > @@ -53,6 +53,7 @@ obj-$(CONFIG_MMC_USHC) += ushc.o > obj-$(CONFIG_MMC_WMT) += wmt-sdmmc.o > > obj-$(CONFIG_MMC_REALTEK_PCI) += rtsx_pci_sdmmc.o > +obj-$(CONFIG_MMC_REALTEK_USB) += rtsx_usb_sdmmc.o > > obj-$(CONFIG_MMC_SDHCI_PLTFM) += sdhci-pltfm.o > obj-$(CONFIG_MMC_SDHCI_CNS3XXX) += sdhci-cns3xxx.o > diff --git a/drivers/mmc/host/rtsx_usb_sdmmc.c b/drivers/mmc/host/rtsx_usb_sdmmc.c > new file mode 100644 > index 0000000..37f58b5 > --- /dev/null > +++ b/drivers/mmc/host/rtsx_usb_sdmmc.c > @@ -0,0 +1,1462 @@ > +/* Realtek USB SD/MMC Card Interface driver > + * > + * Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved. > + * > + * 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, see <http://www.gnu.org/licenses/>. > + * > + * Author: > + * Roger Tseng <rogerable@realtek.com> > + */ > + > +#include <linux/module.h> > +#include <linux/slab.h> > +#include <linux/delay.h> > +#include <linux/platform_device.h> > +#include <linux/usb.h> > +#include <linux/mmc/host.h> > +#include <linux/mmc/mmc.h> > +#include <linux/mmc/sd.h> > +#include <linux/mmc/sdio.h> > +#include <linux/mmc/card.h> > +#include <linux/scatterlist.h> > +#include <linux/pm_runtime.h> > + > +#include <linux/mfd/rtsx_usb.h> > +#include <asm/unaligned.h> > + > +#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) > +#include <linux/leds.h> > +#include <linux/workqueue.h> > +#define RTSX_USB_USE_LEDS_CLASS > +#endif > + > +struct rtsx_usb_sdmmc { > + struct platform_device *pdev; > + struct rtsx_ucr *ucr; > + struct mmc_host *mmc; > + struct mmc_request *mrq; > + > + struct mutex host_mutex; > + > + u8 ssc_depth; > + unsigned int clock; > + bool vpclk; > + bool double_clk; > + bool host_removal; > + bool card_exist; > + bool initial_mode; > + bool ddr_mode; > + > + unsigned char power_mode; > + > +#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) > + struct led_classdev led; > + char led_name[32]; > + struct work_struct led_work; > +#endif > +}; > + > +static inline struct device *sdmmc_dev(struct rtsx_usb_sdmmc *host) > +{ > + return &(host->pdev->dev); > +} > + > +static inline void sd_clear_error(struct rtsx_usb_sdmmc *host) > +{ > + struct rtsx_ucr *ucr = host->ucr; > + rtsx_usb_ep0_write_register(ucr, CARD_STOP, > + SD_STOP | SD_CLR_ERR, > + SD_STOP | SD_CLR_ERR); > + > + rtsx_usb_clear_dma_err(ucr); > + rtsx_usb_clear_fsm_err(ucr); > +} > + > +#ifdef DEBUG > +static void sd_print_debug_regs(struct rtsx_usb_sdmmc *host) > +{ > + struct rtsx_ucr *ucr = host->ucr; > + u8 val = 0; > + > + rtsx_usb_ep0_read_register(ucr, SD_STAT1, &val); > + dev_dbg(sdmmc_dev(host), "SD_STAT1: 0x%x\n", val); > + rtsx_usb_ep0_read_register(ucr, SD_STAT2, &val); > + dev_dbg(sdmmc_dev(host), "SD_STAT2: 0x%x\n", val); > + rtsx_usb_ep0_read_register(ucr, SD_BUS_STAT, &val); > + dev_dbg(sdmmc_dev(host), "SD_BUS_STAT: 0x%x\n", val); > +} > +#else > +#define sd_print_debug_regs(host) > +#endif /* DEBUG */ > + > +static int sd_read_data(struct rtsx_usb_sdmmc *host, struct mmc_command *cmd, > + u16 byte_cnt, u8 *buf, int buf_len, int timeout) > +{ > + struct rtsx_ucr *ucr = host->ucr; > + int err; > + u8 trans_mode; > + > + if (!buf) > + buf_len = 0; > + > + rtsx_usb_init_cmd(ucr); > + if (cmd != NULL) { > + dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD%d\n", __func__ > + , cmd->opcode); > + if (cmd->opcode == MMC_SEND_TUNING_BLOCK) > + trans_mode = SD_TM_AUTO_TUNING; > + else > + trans_mode = SD_TM_NORMAL_READ; > + > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, > + SD_CMD0, 0xFF, (u8)(cmd->opcode) | 0x40); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, > + SD_CMD1, 0xFF, (u8)(cmd->arg >> 24)); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, > + SD_CMD2, 0xFF, (u8)(cmd->arg >> 16)); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, > + SD_CMD3, 0xFF, (u8)(cmd->arg >> 8)); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, > + SD_CMD4, 0xFF, (u8)cmd->arg); > + } else { > + trans_mode = SD_TM_AUTO_READ_3; > + } > + > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, (u8)byte_cnt); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BYTE_CNT_H, > + 0xFF, (u8)(byte_cnt >> 8)); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BLOCK_CNT_L, 0xFF, 1); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BLOCK_CNT_H, 0xFF, 0); > + > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG2, 0xFF, > + SD_CALCULATE_CRC7 | SD_CHECK_CRC16 | > + SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_6); > + if (trans_mode != SD_TM_AUTO_TUNING) > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, > + CARD_DATA_SOURCE, 0x01, PINGPONG_BUFFER); > + > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_TRANSFER, > + 0xFF, trans_mode | SD_TRANSFER_START); > + rtsx_usb_add_cmd(ucr, CHECK_REG_CMD, SD_TRANSFER, > + SD_TRANSFER_END, SD_TRANSFER_END); > + > + if (cmd != NULL) { > + rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD1, 0, 0); > + rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD2, 0, 0); > + rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD3, 0, 0); > + rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD4, 0, 0); > + } > + > + err = rtsx_usb_send_cmd(ucr, MODE_CR, timeout); > + if (err) { > + dev_dbg(sdmmc_dev(host), > + "rtsx_usb_send_cmd failed (err = %d)\n", err); > + return err; > + } > + > + err = rtsx_usb_get_rsp(ucr, !cmd ? 1 : 5, timeout); > + if (err || (ucr->rsp_buf[0] & SD_TRANSFER_ERR)) { > + sd_print_debug_regs(host); > + > + if (!err) { > + dev_dbg(sdmmc_dev(host), > + "Transfer failed (SD_TRANSFER = %02x)\n", > + ucr->rsp_buf[0]); > + err = -EIO; > + } else { > + dev_dbg(sdmmc_dev(host), > + "rtsx_usb_get_rsp failed (err = %d)\n", err); > + } > + > + return err; > + } > + > + if (cmd != NULL) { > + cmd->resp[0] = get_unaligned_be32(ucr->rsp_buf + 1); > + dev_dbg(sdmmc_dev(host), "cmd->resp[0] = 0x%08x\n", > + cmd->resp[0]); > + } > + > + if (buf && buf_len) { > + /* 2-byte aligned part */ > + err = rtsx_usb_read_ppbuf(ucr, buf, byte_cnt - (byte_cnt % 2)); > + if (err) { > + dev_dbg(sdmmc_dev(host), > + "rtsx_usb_read_ppbuf failed (err = %d)\n", err); > + return err; > + } > + > + /* unaligned byte */ > + if (byte_cnt % 2) > + return rtsx_usb_read_register(ucr, > + PPBUF_BASE2 + byte_cnt, > + buf + byte_cnt - 1); > + } > + > + return 0; > +} > + > +static int sd_write_data(struct rtsx_usb_sdmmc *host, struct mmc_command *cmd, > + u16 byte_cnt, u8 *buf, int buf_len, int timeout) > +{ > + struct rtsx_ucr *ucr = host->ucr; > + int err; > + u8 trans_mode; > + > + if (!buf) > + buf_len = 0; > + > + if (buf && buf_len) { > + err = rtsx_usb_write_ppbuf(ucr, buf, buf_len); > + if (err) { > + dev_dbg(sdmmc_dev(host), > + "rtsx_usb_write_ppbuf failed (err = %d)\n", > + err); > + return err; > + } > + } > + > + trans_mode = (cmd != NULL) ? SD_TM_AUTO_WRITE_2 : SD_TM_AUTO_WRITE_3; > + rtsx_usb_init_cmd(ucr); > + > + if (cmd != NULL) { > + dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD%d\n", __func__, > + cmd->opcode); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, > + SD_CMD0, 0xFF, (u8)(cmd->opcode) | 0x40); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, > + SD_CMD1, 0xFF, (u8)(cmd->arg >> 24)); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, > + SD_CMD2, 0xFF, (u8)(cmd->arg >> 16)); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, > + SD_CMD3, 0xFF, (u8)(cmd->arg >> 8)); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, > + SD_CMD4, 0xFF, (u8)cmd->arg); > + } > + > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, (u8)byte_cnt); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BYTE_CNT_H, > + 0xFF, (u8)(byte_cnt >> 8)); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BLOCK_CNT_L, 0xFF, 1); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BLOCK_CNT_H, 0xFF, 0); > + > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG2, 0xFF, > + SD_CALCULATE_CRC7 | SD_CHECK_CRC16 | > + SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_6); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, > + CARD_DATA_SOURCE, 0x01, PINGPONG_BUFFER); > + > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_TRANSFER, 0xFF, > + trans_mode | SD_TRANSFER_START); > + rtsx_usb_add_cmd(ucr, CHECK_REG_CMD, SD_TRANSFER, > + SD_TRANSFER_END, SD_TRANSFER_END); > + > + if (cmd != NULL) { > + rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD1, 0, 0); > + rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD2, 0, 0); > + rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD3, 0, 0); > + rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD4, 0, 0); > + } > + > + err = rtsx_usb_send_cmd(ucr, MODE_CR, timeout); > + if (err) { > + dev_dbg(sdmmc_dev(host), > + "rtsx_usb_send_cmd failed (err = %d)\n", err); > + return err; > + } > + > + err = rtsx_usb_get_rsp(ucr, !cmd ? 1 : 5, timeout); > + if (err) { > + sd_print_debug_regs(host); > + dev_dbg(sdmmc_dev(host), > + "rtsx_usb_get_rsp failed (err = %d)\n", err); > + return err; > + } > + > + if (cmd != NULL) { > + cmd->resp[0] = get_unaligned_be32(ucr->rsp_buf + 1); > + dev_dbg(sdmmc_dev(host), "cmd->resp[0] = 0x%08x\n", > + cmd->resp[0]); > + } > + > + return 0; > +} > + > +static void sd_send_cmd_get_rsp(struct rtsx_usb_sdmmc *host, > + struct mmc_command *cmd) > +{ > + struct rtsx_ucr *ucr = host->ucr; > + u8 cmd_idx = (u8)cmd->opcode; > + u32 arg = cmd->arg; > + int err = 0; > + int timeout = 100; > + int i; > + u8 *ptr; > + int stat_idx = 0; > + int len = 2; > + u8 rsp_type; > + > + dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD %d, arg = 0x%08x\n", > + __func__, cmd_idx, arg); > + > + /* Response type: > + * R0 > + * R1, R5, R6, R7 > + * R1b > + * R2 > + * R3, R4 > + */ > + switch (mmc_resp_type(cmd)) { > + case MMC_RSP_NONE: > + rsp_type = SD_RSP_TYPE_R0; > + break; > + case MMC_RSP_R1: > + rsp_type = SD_RSP_TYPE_R1; > + break; > + case MMC_RSP_R1 & ~MMC_RSP_CRC: > + rsp_type = SD_RSP_TYPE_R1 | SD_NO_CHECK_CRC7; > + break; > + case MMC_RSP_R1B: > + rsp_type = SD_RSP_TYPE_R1b; > + break; > + case MMC_RSP_R2: > + rsp_type = SD_RSP_TYPE_R2; > + break; > + case MMC_RSP_R3: > + rsp_type = SD_RSP_TYPE_R3; > + break; > + default: > + dev_dbg(sdmmc_dev(host), "cmd->flag is not valid\n"); > + err = -EINVAL; > + goto out; > + } > + > + if (rsp_type == SD_RSP_TYPE_R1b) > + timeout = 3000; > + > + if (cmd->opcode == SD_SWITCH_VOLTAGE) { > + err = rtsx_usb_write_register(ucr, SD_BUS_STAT, > + SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP, > + SD_CLK_TOGGLE_EN); > + if (err) > + goto out; > + } > + > + rtsx_usb_init_cmd(ucr); > + > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CMD0, 0xFF, 0x40 | cmd_idx); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CMD1, 0xFF, (u8)(arg >> 24)); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CMD2, 0xFF, (u8)(arg >> 16)); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CMD3, 0xFF, (u8)(arg >> 8)); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CMD4, 0xFF, (u8)arg); > + > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG2, 0xFF, rsp_type); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_DATA_SOURCE, > + 0x01, PINGPONG_BUFFER); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_TRANSFER, > + 0xFF, SD_TM_CMD_RSP | SD_TRANSFER_START); > + rtsx_usb_add_cmd(ucr, CHECK_REG_CMD, SD_TRANSFER, > + SD_TRANSFER_END | SD_STAT_IDLE, > + SD_TRANSFER_END | SD_STAT_IDLE); > + > + if (rsp_type == SD_RSP_TYPE_R2) { > + /* Read data from ping-pong buffer */ > + for (i = PPBUF_BASE2; i < PPBUF_BASE2 + 16; i++) > + rtsx_usb_add_cmd(ucr, READ_REG_CMD, (u16)i, 0, 0); > + stat_idx = 16; > + } else if (rsp_type != SD_RSP_TYPE_R0) { > + /* Read data from SD_CMDx registers */ > + for (i = SD_CMD0; i <= SD_CMD4; i++) > + rtsx_usb_add_cmd(ucr, READ_REG_CMD, (u16)i, 0, 0); > + stat_idx = 5; > + } > + len += stat_idx; > + > + rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_STAT1, 0, 0); > + > + err = rtsx_usb_send_cmd(ucr, MODE_CR, 100); > + if (err) { > + dev_dbg(sdmmc_dev(host), > + "rtsx_usb_send_cmd error (err = %d)\n", err); > + goto out; > + } > + > + err = rtsx_usb_get_rsp(ucr, len, timeout); > + if (err || (ucr->rsp_buf[0] & SD_TRANSFER_ERR)) { > + sd_print_debug_regs(host); > + sd_clear_error(host); > + > + if (!err) { > + dev_dbg(sdmmc_dev(host), > + "Transfer failed (SD_TRANSFER = %02x)\n", > + ucr->rsp_buf[0]); > + err = -EIO; > + } else { > + dev_dbg(sdmmc_dev(host), > + "rtsx_usb_get_rsp failed (err = %d)\n", err); > + } > + > + goto out; > + } > + > + if (rsp_type == SD_RSP_TYPE_R0) { > + err = 0; > + goto out; > + } > + > + /* Skip result of CHECK_REG_CMD */ > + ptr = ucr->rsp_buf + 1; > + > + /* Check (Start,Transmission) bit of Response */ > + if ((ptr[0] & 0xC0) != 0) { > + err = -EILSEQ; > + dev_dbg(sdmmc_dev(host), "Invalid response bit\n"); > + goto out; > + } > + > + /* Check CRC7 */ > + if (!(rsp_type & SD_NO_CHECK_CRC7)) { > + if (ptr[stat_idx] & SD_CRC7_ERR) { > + err = -EILSEQ; > + dev_dbg(sdmmc_dev(host), "CRC7 error\n"); > + goto out; > + } > + } > + > + if (rsp_type == SD_RSP_TYPE_R2) { > + for (i = 0; i < 4; i++) { > + cmd->resp[i] = get_unaligned_be32(ptr + 1 + i * 4); > + dev_dbg(sdmmc_dev(host), "cmd->resp[%d] = 0x%08x\n", > + i, cmd->resp[i]); > + } > + } else { > + cmd->resp[0] = get_unaligned_be32(ptr + 1); > + dev_dbg(sdmmc_dev(host), "cmd->resp[0] = 0x%08x\n", > + cmd->resp[0]); > + } > + > +out: > + cmd->error = err; > +} > + > +static int sd_rw_multi(struct rtsx_usb_sdmmc *host, struct mmc_request *mrq) > +{ > + struct rtsx_ucr *ucr = host->ucr; > + struct mmc_data *data = mrq->data; > + int read = (data->flags & MMC_DATA_READ) ? 1 : 0; > + u8 cfg2, trans_mode; > + int err; > + u8 flag; > + size_t data_len = data->blksz * data->blocks; > + unsigned int pipe; > + > + if (read) { > + dev_dbg(sdmmc_dev(host), "%s: read %zu bytes\n", > + __func__, data_len); > + cfg2 = SD_CALCULATE_CRC7 | SD_CHECK_CRC16 | > + SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_0; > + trans_mode = SD_TM_AUTO_READ_3; > + } else { > + dev_dbg(sdmmc_dev(host), "%s: write %zu bytes\n", > + __func__, data_len); > + cfg2 = SD_NO_CALCULATE_CRC7 | SD_CHECK_CRC16 | > + SD_NO_WAIT_BUSY_END | SD_NO_CHECK_CRC7 | SD_RSP_LEN_0; > + trans_mode = SD_TM_AUTO_WRITE_3; > + } > + > + rtsx_usb_init_cmd(ucr); > + > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, 0x00); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BYTE_CNT_H, 0xFF, 0x02); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BLOCK_CNT_L, > + 0xFF, (u8)data->blocks); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BLOCK_CNT_H, > + 0xFF, (u8)(data->blocks >> 8)); > + > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_DATA_SOURCE, > + 0x01, RING_BUFFER); > + > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_TC3, > + 0xFF, (u8)(data_len >> 24)); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_TC2, > + 0xFF, (u8)(data_len >> 16)); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_TC1, > + 0xFF, (u8)(data_len >> 8)); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_TC0, > + 0xFF, (u8)data_len); > + if (read) { > + flag = MODE_CDIR; > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_CTL, > + 0x03 | DMA_PACK_SIZE_MASK, > + DMA_DIR_FROM_CARD | DMA_EN | DMA_512); > + } else { > + flag = MODE_CDOR; > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_CTL, > + 0x03 | DMA_PACK_SIZE_MASK, > + DMA_DIR_TO_CARD | DMA_EN | DMA_512); > + } > + > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG2, 0xFF, cfg2); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_TRANSFER, 0xFF, > + trans_mode | SD_TRANSFER_START); > + rtsx_usb_add_cmd(ucr, CHECK_REG_CMD, SD_TRANSFER, > + SD_TRANSFER_END, SD_TRANSFER_END); > + > + err = rtsx_usb_send_cmd(ucr, flag, 100); > + if (err) > + return err; > + > + if (read) > + pipe = usb_rcvbulkpipe(ucr->pusb_dev, EP_BULK_IN); > + else > + pipe = usb_sndbulkpipe(ucr->pusb_dev, EP_BULK_OUT); > + > + err = rtsx_usb_transfer_data(ucr, pipe, data->sg, data_len, > + data->sg_len, NULL, 10000); > + if (err) { > + dev_dbg(sdmmc_dev(host), "rtsx_usb_transfer_data error %d\n" > + , err); > + sd_clear_error(host); > + return err; > + } > + > + return rtsx_usb_get_rsp(ucr, 1, 2000); > +} > + > +static inline void sd_enable_initial_mode(struct rtsx_usb_sdmmc *host) > +{ > + rtsx_usb_write_register(host->ucr, SD_CFG1, > + SD_CLK_DIVIDE_MASK, SD_CLK_DIVIDE_128); > +} > + > +static inline void sd_disable_initial_mode(struct rtsx_usb_sdmmc *host) > +{ > + rtsx_usb_write_register(host->ucr, SD_CFG1, > + SD_CLK_DIVIDE_MASK, SD_CLK_DIVIDE_0); > +} > + > +static void sd_normal_rw(struct rtsx_usb_sdmmc *host, > + struct mmc_request *mrq) > +{ > + struct mmc_command *cmd = mrq->cmd; > + struct mmc_data *data = mrq->data; > + u8 *buf; > + > + buf = kzalloc(data->blksz, GFP_NOIO); > + if (!buf) { > + cmd->error = -ENOMEM; > + return; > + } > + > + if (data->flags & MMC_DATA_READ) { > + if (host->initial_mode) > + sd_disable_initial_mode(host); > + > + cmd->error = sd_read_data(host, cmd, (u16)data->blksz, buf, > + data->blksz, 200); > + > + if (host->initial_mode) > + sd_enable_initial_mode(host); > + > + sg_copy_from_buffer(data->sg, data->sg_len, buf, data->blksz); > + } else { > + sg_copy_to_buffer(data->sg, data->sg_len, buf, data->blksz); > + > + cmd->error = sd_write_data(host, cmd, (u16)data->blksz, buf, > + data->blksz, 200); > + } > + > + kfree(buf); > +} > + > +static int sd_change_phase(struct rtsx_usb_sdmmc *host, u8 sample_point, int tx) > +{ > + struct rtsx_ucr *ucr = host->ucr; > + int err; > + > + dev_dbg(sdmmc_dev(host), "%s: %s sample_point = %d\n", > + __func__, tx ? "TX" : "RX", sample_point); > + > + rtsx_usb_init_cmd(ucr); > + > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CLK_DIV, CLK_CHANGE, CLK_CHANGE); > + > + if (tx) > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_VPCLK0_CTL, > + 0x0F, sample_point); > + else > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_VPCLK1_CTL, > + 0x0F, sample_point); > + > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_VPCLK0_CTL, PHASE_NOT_RESET, 0); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_VPCLK0_CTL, > + PHASE_NOT_RESET, PHASE_NOT_RESET); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CLK_DIV, CLK_CHANGE, 0); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG1, SD_ASYNC_FIFO_RST, 0); > + > + err = rtsx_usb_send_cmd(ucr, MODE_C, 100); > + if (err) > + return err; > + > + return 0; > +} > + > +static inline u32 get_phase_point(u32 phase_map, unsigned int idx) > +{ > + idx &= MAX_PHASE; > + return phase_map & (1 << idx); > +} > + > +static int get_phase_len(u32 phase_map, unsigned int idx) > +{ > + int i; > + > + for (i = 0; i < MAX_PHASE + 1; i++) { > + if (get_phase_point(phase_map, idx + i) == 0) > + return i; > + } > + return MAX_PHASE + 1; > +} > + > +static u8 sd_search_final_phase(struct rtsx_usb_sdmmc *host, u32 phase_map) > +{ > + int start = 0, len = 0; > + int start_final = 0, len_final = 0; > + u8 final_phase = 0xFF; > + > + if (phase_map == 0) { > + dev_dbg(sdmmc_dev(host), "Phase: [map:%x]\n", phase_map); > + return final_phase; > + } > + > + while (start < MAX_PHASE + 1) { > + len = get_phase_len(phase_map, start); > + if (len_final < len) { > + start_final = start; > + len_final = len; > + } > + start += len ? len : 1; > + } > + > + final_phase = (start_final + len_final / 2) & MAX_PHASE; > + dev_dbg(sdmmc_dev(host), "Phase: [map:%x] [maxlen:%d] [final:%d]\n", > + phase_map, len_final, final_phase); > + > + return final_phase; > +} > + > +static void sd_wait_data_idle(struct rtsx_usb_sdmmc *host) > +{ > + int err, i; > + u8 val = 0; > + > + for (i = 0; i < 100; i++) { > + err = rtsx_usb_ep0_read_register(host->ucr, > + SD_DATA_STATE, &val); > + if (val & SD_DATA_IDLE) > + return; > + > + usleep_range(100, 1000); > + } > +} > + > +static int sd_tuning_rx_cmd(struct rtsx_usb_sdmmc *host, > + u8 opcode, u8 sample_point) > +{ > + int err; > + struct mmc_command cmd = {0}; > + > + err = sd_change_phase(host, sample_point, 0); > + if (err) > + return err; > + > + cmd.opcode = MMC_SEND_TUNING_BLOCK; > + err = sd_read_data(host, &cmd, 0x40, NULL, 0, 100); > + if (err) { > + /* Wait till SD DATA IDLE */ > + sd_wait_data_idle(host); > + sd_clear_error(host); > + return err; > + } > + > + return 0; > +} > + > +static void sd_tuning_phase(struct rtsx_usb_sdmmc *host, > + u8 opcode, u16 *phase_map) > +{ > + int err, i; > + u16 raw_phase_map = 0; > + > + for (i = MAX_PHASE; i >= 0; i--) { > + err = sd_tuning_rx_cmd(host, opcode, (u8)i); > + if (!err) > + raw_phase_map |= 1 << i; > + } > + > + if (phase_map) > + *phase_map = raw_phase_map; > +} > + > +static int sd_tuning_rx(struct rtsx_usb_sdmmc *host, u8 opcode) > +{ > + int err, i; > + u16 raw_phase_map[RX_TUNING_CNT] = {0}, phase_map; > + u8 final_phase; > + > + /* setting fixed default TX phase */ > + err = sd_change_phase(host, 0x01, 1); > + if (err) { > + dev_dbg(sdmmc_dev(host), "TX phase setting failed\n"); > + return err; > + } > + > + /* tuning RX phase */ > + for (i = 0; i < RX_TUNING_CNT; i++) { > + sd_tuning_phase(host, opcode, &(raw_phase_map[i])); > + > + if (raw_phase_map[i] == 0) > + break; > + } > + > + phase_map = 0xFFFF; > + for (i = 0; i < RX_TUNING_CNT; i++) { > + dev_dbg(sdmmc_dev(host), "RX raw_phase_map[%d] = 0x%04x\n", > + i, raw_phase_map[i]); > + phase_map &= raw_phase_map[i]; > + } > + dev_dbg(sdmmc_dev(host), "RX phase_map = 0x%04x\n", phase_map); > + > + if (phase_map) { > + final_phase = sd_search_final_phase(host, phase_map); > + if (final_phase == 0xFF) > + return -EINVAL; > + > + err = sd_change_phase(host, final_phase, 0); > + if (err) > + return err; > + } else { > + return -EINVAL; > + } > + > + return 0; > +} > + > +static int sdmmc_get_ro(struct mmc_host *mmc) > +{ > + struct rtsx_usb_sdmmc *host = mmc_priv(mmc); > + struct rtsx_ucr *ucr = host->ucr; > + int err; > + u16 val; > + > + if (host->host_removal) > + return -ENOMEDIUM; > + > + mutex_lock(&ucr->dev_mutex); > + > + /* Check SD card detect */ > + err = rtsx_usb_get_card_status(ucr, &val); > + > + mutex_unlock(&ucr->dev_mutex); > + > + > + /* Treat failed detection as non-ro */ > + if (err) > + return 0; > + > + if (val & SD_WP) > + return 1; > + > + return 0; > +} > + > +static int sdmmc_get_cd(struct mmc_host *mmc) > +{ > + struct rtsx_usb_sdmmc *host = mmc_priv(mmc); > + struct rtsx_ucr *ucr = host->ucr; > + int err; > + u16 val; > + > + if (host->host_removal) > + return -ENOMEDIUM; > + > + mutex_lock(&ucr->dev_mutex); > + > + /* Check SD card detect */ > + err = rtsx_usb_get_card_status(ucr, &val); > + > + mutex_unlock(&ucr->dev_mutex); > + > + /* Treat failed detection as non-exist */ > + if (err) > + goto no_card; > + > + if (val & SD_CD) { > + host->card_exist = true; > + return 1; > + } > + > +no_card: > + host->card_exist = false; > + return 0; > +} > + > +static void sdmmc_request(struct mmc_host *mmc, struct mmc_request *mrq) > +{ > + struct rtsx_usb_sdmmc *host = mmc_priv(mmc); > + struct rtsx_ucr *ucr = host->ucr; > + struct mmc_command *cmd = mrq->cmd; > + struct mmc_data *data = mrq->data; > + unsigned int data_size = 0; > + > + dev_dbg(sdmmc_dev(host), "%s\n", __func__); > + > + if (host->host_removal) { > + cmd->error = -ENOMEDIUM; > + goto finish; > + } > + > + if ((!host->card_exist)) { > + cmd->error = -ENOMEDIUM; > + goto finish_detect_card; > + } > + > + /* > + * Reject SDIO CMDs to speed up card identification > + * since unsupported > + */ > + if (cmd->opcode == SD_IO_SEND_OP_COND || > + cmd->opcode == SD_IO_RW_DIRECT || > + cmd->opcode == SD_IO_RW_EXTENDED) { > + cmd->error = -EINVAL; > + goto finish; > + } > + > + mutex_lock(&ucr->dev_mutex); > + > + mutex_lock(&host->host_mutex); > + host->mrq = mrq; > + mutex_unlock(&host->host_mutex); > + > + if (mrq->data) > + data_size = data->blocks * data->blksz; > + > + if (!data_size) { > + sd_send_cmd_get_rsp(host, cmd); > + } else if ((!(data_size % 512) && cmd->opcode != MMC_SEND_EXT_CSD) || > + mmc_op_multi(cmd->opcode)) { > + sd_send_cmd_get_rsp(host, cmd); > + > + if (!cmd->error) { > + sd_rw_multi(host, mrq); > + > + if (mmc_op_multi(cmd->opcode) && mrq->stop) { > + sd_send_cmd_get_rsp(host, mrq->stop); > + rtsx_usb_write_register(ucr, MC_FIFO_CTL, > + FIFO_FLUSH, FIFO_FLUSH); > + } > + } > + } else { > + sd_normal_rw(host, mrq); > + } > + > + if (mrq->data) { > + if (cmd->error || data->error) > + data->bytes_xfered = 0; > + else > + data->bytes_xfered = data->blocks * data->blksz; > + } > + > + mutex_unlock(&ucr->dev_mutex); > + > +finish_detect_card: > + if (cmd->error) { > + /* > + * detect card when fail to update card existence state and > + * speed up card removal when retry > + */ > + sdmmc_get_cd(mmc); > + dev_dbg(sdmmc_dev(host), "cmd->error = %d\n", cmd->error); > + } > + > +finish: > + mutex_lock(&host->host_mutex); > + host->mrq = NULL; > + mutex_unlock(&host->host_mutex); > + > + mmc_request_done(mmc, mrq); > +} > + > +static int sd_set_bus_width(struct rtsx_usb_sdmmc *host, > + unsigned char bus_width) > +{ > + int err = 0; > + u8 width[] = { > + [MMC_BUS_WIDTH_1] = SD_BUS_WIDTH_1BIT, > + [MMC_BUS_WIDTH_4] = SD_BUS_WIDTH_4BIT, > + [MMC_BUS_WIDTH_8] = SD_BUS_WIDTH_8BIT, > + }; > + > + if (bus_width <= MMC_BUS_WIDTH_8) > + err = rtsx_usb_write_register(host->ucr, SD_CFG1, > + 0x03, width[bus_width]); > + > + return err; > +} > + > +static int sd_pull_ctl_disable_lqfp48(struct rtsx_ucr *ucr) > +{ > + rtsx_usb_init_cmd(ucr); > + > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0x55); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0x55); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0x95); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x55); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x55); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0xA5); > + > + return rtsx_usb_send_cmd(ucr, MODE_C, 100); > +} > + > +static int sd_pull_ctl_disable_qfn24(struct rtsx_ucr *ucr) > +{ > + rtsx_usb_init_cmd(ucr); > + > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0x65); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0x55); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0x95); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x55); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x56); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0x59); > + > + return rtsx_usb_send_cmd(ucr, MODE_C, 100); > +} > + > +static int sd_pull_ctl_enable_lqfp48(struct rtsx_ucr *ucr) > +{ > + rtsx_usb_init_cmd(ucr); > + > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0xAA); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0xAA); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0xA9); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x55); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x55); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0xA5); > + > + return rtsx_usb_send_cmd(ucr, MODE_C, 100); > +} > + > +static int sd_pull_ctl_enable_qfn24(struct rtsx_ucr *ucr) > +{ > + rtsx_usb_init_cmd(ucr); > + > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0xA5); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0x9A); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0xA5); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x9A); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x65); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0x5A); > + > + return rtsx_usb_send_cmd(ucr, MODE_C, 100); > +} > + > +static int sd_power_on(struct rtsx_usb_sdmmc *host) > +{ > + struct rtsx_ucr *ucr = host->ucr; > + int err; > + > + dev_dbg(sdmmc_dev(host), "%s\n", __func__); > + rtsx_usb_init_cmd(ucr); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_SELECT, 0x07, SD_MOD_SEL); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_SHARE_MODE, > + CARD_SHARE_MASK, CARD_SHARE_SD); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_EN, > + SD_CLK_EN, SD_CLK_EN); > + err = rtsx_usb_send_cmd(ucr, MODE_C, 100); > + if (err) > + return err; > + > + if (CHECK_PKG(ucr, LQFP48)) > + err = sd_pull_ctl_enable_lqfp48(ucr); > + else > + err = sd_pull_ctl_enable_qfn24(ucr); > + if (err) > + return err; > + > + err = rtsx_usb_write_register(ucr, CARD_PWR_CTL, > + POWER_MASK, PARTIAL_POWER_ON); > + if (err) > + return err; > + > + usleep_range(800, 1000); > + > + rtsx_usb_init_cmd(ucr); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PWR_CTL, > + POWER_MASK|LDO3318_PWR_MASK, POWER_ON|LDO_ON); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_OE, > + SD_OUTPUT_EN, SD_OUTPUT_EN); > + > + return rtsx_usb_send_cmd(ucr, MODE_C, 100); > +} > + > +static int sd_power_off(struct rtsx_usb_sdmmc *host) > +{ > + struct rtsx_ucr *ucr = host->ucr; > + int err; > + > + dev_dbg(sdmmc_dev(host), "%s\n", __func__); > + rtsx_usb_init_cmd(ucr); > + > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_EN, SD_CLK_EN, 0); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_OE, SD_OUTPUT_EN, 0); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PWR_CTL, > + POWER_MASK, POWER_OFF); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PWR_CTL, > + POWER_MASK|LDO3318_PWR_MASK, POWER_OFF|LDO_SUSPEND); > + > + err = rtsx_usb_send_cmd(ucr, MODE_C, 100); > + if (err) > + return err; > + > + if (CHECK_PKG(ucr, LQFP48)) > + return sd_pull_ctl_disable_lqfp48(ucr); > + return sd_pull_ctl_disable_qfn24(ucr); > +} > + > +static int sd_set_power_mode(struct rtsx_usb_sdmmc *host, > + unsigned char power_mode) > +{ > + int err; > + > + if (power_mode != MMC_POWER_OFF) > + power_mode = MMC_POWER_ON; > + > + if (power_mode == host->power_mode) > + return 0; > + > + if (power_mode == MMC_POWER_OFF) { > + err = sd_power_off(host); > + pm_runtime_put(sdmmc_dev(host)); > + } else { > + pm_runtime_get_sync(sdmmc_dev(host)); > + err = sd_power_on(host); > + } > + > + if (!err) > + host->power_mode = power_mode; > + > + return err; > +} > + > +static int sd_set_timing(struct rtsx_usb_sdmmc *host, > + unsigned char timing, bool *ddr_mode) > +{ > + struct rtsx_ucr *ucr = host->ucr; > + int err; > + > + *ddr_mode = false; > + > + rtsx_usb_init_cmd(ucr); > + > + switch (timing) { > + case MMC_TIMING_UHS_SDR104: > + case MMC_TIMING_UHS_SDR50: > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG1, > + 0x0C | SD_ASYNC_FIFO_RST, > + SD_30_MODE | SD_ASYNC_FIFO_RST); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF, > + CRC_VAR_CLK0 | SD30_FIX_CLK | SAMPLE_VAR_CLK1); > + break; > + > + case MMC_TIMING_UHS_DDR50: > + *ddr_mode = true; > + > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG1, > + 0x0C | SD_ASYNC_FIFO_RST, > + SD_DDR_MODE | SD_ASYNC_FIFO_RST); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF, > + CRC_VAR_CLK0 | SD30_FIX_CLK | SAMPLE_VAR_CLK1); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_PUSH_POINT_CTL, > + DDR_VAR_TX_CMD_DAT, DDR_VAR_TX_CMD_DAT); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_SAMPLE_POINT_CTL, > + DDR_VAR_RX_DAT | DDR_VAR_RX_CMD, > + DDR_VAR_RX_DAT | DDR_VAR_RX_CMD); > + break; > + > + case MMC_TIMING_MMC_HS: > + case MMC_TIMING_SD_HS: > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CFG1, > + 0x0C, SD_20_MODE); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF, > + CRC_FIX_CLK | SD30_VAR_CLK0 | SAMPLE_VAR_CLK1); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_PUSH_POINT_CTL, > + SD20_TX_SEL_MASK, SD20_TX_14_AHEAD); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_SAMPLE_POINT_CTL, > + SD20_RX_SEL_MASK, SD20_RX_14_DELAY); > + break; > + > + default: > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, > + SD_CFG1, 0x0C, SD_20_MODE); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF, > + CRC_FIX_CLK | SD30_VAR_CLK0 | SAMPLE_VAR_CLK1); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, > + SD_PUSH_POINT_CTL, 0xFF, 0); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_SAMPLE_POINT_CTL, > + SD20_RX_SEL_MASK, SD20_RX_POS_EDGE); > + break; > + } > + > + err = rtsx_usb_send_cmd(ucr, MODE_C, 100); > + > + return err; > +} > + > +static void sdmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) > +{ > + struct rtsx_usb_sdmmc *host = mmc_priv(mmc); > + struct rtsx_ucr *ucr = host->ucr; > + > + dev_dbg(sdmmc_dev(host), "%s\n", __func__); > + mutex_lock(&ucr->dev_mutex); > + > + if (rtsx_usb_card_exclusive_check(ucr, RTSX_USB_SD_CARD)) { > + mutex_unlock(&ucr->dev_mutex); > + return; > + } > + > + sd_set_power_mode(host, ios->power_mode); > + sd_set_bus_width(host, ios->bus_width); > + sd_set_timing(host, ios->timing, &host->ddr_mode); > + > + host->vpclk = false; > + host->double_clk = true; > + > + switch (ios->timing) { > + case MMC_TIMING_UHS_SDR104: > + case MMC_TIMING_UHS_SDR50: > + host->ssc_depth = SSC_DEPTH_2M; > + host->vpclk = true; > + host->double_clk = false; > + break; > + case MMC_TIMING_UHS_DDR50: > + case MMC_TIMING_UHS_SDR25: > + host->ssc_depth = SSC_DEPTH_1M; > + break; > + default: > + host->ssc_depth = SSC_DEPTH_512K; > + break; > + } > + > + host->initial_mode = (ios->clock <= 1000000) ? true : false; > + host->clock = ios->clock; > + > + rtsx_usb_switch_clock(host->ucr, host->clock, host->ssc_depth, > + host->initial_mode, host->double_clk, host->vpclk); > + > + mutex_unlock(&ucr->dev_mutex); > + dev_dbg(sdmmc_dev(host), "%s end\n", __func__); > +} > + > +static int sdmmc_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios) > +{ > + struct rtsx_usb_sdmmc *host = mmc_priv(mmc); > + struct rtsx_ucr *ucr = host->ucr; > + int err = 0; > + > + dev_dbg(sdmmc_dev(host), "%s: signal_voltage = %d\n", > + __func__, ios->signal_voltage); > + > + if (host->host_removal) > + return -ENOMEDIUM; > + > + if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_120) > + return -EPERM; > + > + mutex_lock(&ucr->dev_mutex); > + > + err = rtsx_usb_card_exclusive_check(ucr, RTSX_USB_SD_CARD); > + if (err) { > + mutex_unlock(&ucr->dev_mutex); > + return err; > + } > + > + /* Let mmc core do the busy checking, simply stop the forced-toggle > + * clock(while issuing CMD11) and switch voltage. > + */ > + rtsx_usb_init_cmd(ucr); > + > + if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_330) { > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_PAD_CTL, > + SD_IO_USING_1V8, SD_IO_USING_3V3); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, LDO_POWER_CFG, > + TUNE_SD18_MASK, TUNE_SD18_3V3); > + } else { > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_BUS_STAT, > + SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP, > + SD_CLK_FORCE_STOP); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_PAD_CTL, > + SD_IO_USING_1V8, SD_IO_USING_1V8); > + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, LDO_POWER_CFG, > + TUNE_SD18_MASK, TUNE_SD18_1V8); > + } > + > + err = rtsx_usb_send_cmd(ucr, MODE_C, 100); > + mutex_unlock(&ucr->dev_mutex); > + > + return err; > +} > + > +static int sdmmc_card_busy(struct mmc_host *mmc) > +{ > + struct rtsx_usb_sdmmc *host = mmc_priv(mmc); > + struct rtsx_ucr *ucr = host->ucr; > + int err; > + u8 stat; > + u8 mask = SD_DAT3_STATUS | SD_DAT2_STATUS | SD_DAT1_STATUS > + | SD_DAT0_STATUS; > + > + dev_dbg(sdmmc_dev(host), "%s\n", __func__); > + > + mutex_lock(&ucr->dev_mutex); > + > + err = rtsx_usb_write_register(ucr, SD_BUS_STAT, > + SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP, > + SD_CLK_TOGGLE_EN); > + if (err) > + goto out; > + > + mdelay(1); > + > + err = rtsx_usb_read_register(ucr, SD_BUS_STAT, &stat); > + if (err) > + goto out; > + > + err = rtsx_usb_write_register(ucr, SD_BUS_STAT, > + SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP, 0); > +out: > + mutex_unlock(&ucr->dev_mutex); > + > + if (err) > + return err; > + > + /* check if any pin between dat[0:3] is low */ > + if ((stat & mask) != mask) > + return 1; > + else > + return 0; > +} > + > +static int sdmmc_execute_tuning(struct mmc_host *mmc, u32 opcode) > +{ > + struct rtsx_usb_sdmmc *host = mmc_priv(mmc); > + struct rtsx_ucr *ucr = host->ucr; > + int err = 0; > + > + if (host->host_removal) > + return -ENOMEDIUM; > + > + mutex_lock(&ucr->dev_mutex); > + > + if (!host->ddr_mode) > + err = sd_tuning_rx(host, MMC_SEND_TUNING_BLOCK); > + > + mutex_unlock(&ucr->dev_mutex); > + > + return err; > +} > + > +static const struct mmc_host_ops rtsx_usb_sdmmc_ops = { > + .request = sdmmc_request, > + .set_ios = sdmmc_set_ios, > + .get_ro = sdmmc_get_ro, > + .get_cd = sdmmc_get_cd, > + .start_signal_voltage_switch = sdmmc_switch_voltage, > + .card_busy = sdmmc_card_busy, > + .execute_tuning = sdmmc_execute_tuning, > +}; > + > +#ifdef RTSX_USB_USE_LEDS_CLASS > +static void rtsx_usb_led_control(struct led_classdev *led, > + enum led_brightness brightness) > +{ > + struct rtsx_usb_sdmmc *host = container_of(led, > + struct rtsx_usb_sdmmc, led); > + > + if (host->host_removal) > + return; > + > + host->led.brightness = brightness; > + schedule_work(&host->led_work); > +} > + > +static void rtsx_usb_update_led(struct work_struct *work) > +{ > + struct rtsx_usb_sdmmc *host = > + container_of(work, struct rtsx_usb_sdmmc, led_work); > + struct rtsx_ucr *ucr = host->ucr; > + > + mutex_lock(&ucr->dev_mutex); > + > + if (host->led.brightness == LED_OFF) > + rtsx_usb_turn_off_led(ucr); > + else > + rtsx_usb_turn_on_led(ucr); > + > + mutex_unlock(&ucr->dev_mutex); > +} > +#endif > + > +static void rtsx_usb_init_host(struct rtsx_usb_sdmmc *host) > +{ > + struct mmc_host *mmc = host->mmc; > + > + mmc->f_min = 250000; > + mmc->f_max = 208000000; > + mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195; > + mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SD_HIGHSPEED | > + MMC_CAP_MMC_HIGHSPEED | MMC_CAP_BUS_WIDTH_TEST | > + MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | MMC_CAP_UHS_SDR50 | > + MMC_CAP_NEEDS_POLL; > + > + mmc->max_current_330 = 400; > + mmc->max_current_180 = 800; > + mmc->ops = &rtsx_usb_sdmmc_ops; > + mmc->max_segs = 256; > + mmc->max_seg_size = 65536; > + mmc->max_blk_size = 512; > + mmc->max_blk_count = 65535; > + mmc->max_req_size = 524288; > + > + host->power_mode = MMC_POWER_OFF; > +} > + > +static int rtsx_usb_sdmmc_drv_probe(struct platform_device *pdev) > +{ > + struct mmc_host *mmc; > + struct rtsx_usb_sdmmc *host; > + struct rtsx_ucr *ucr; > +#ifdef RTSX_USB_USE_LEDS_CLASS > + int err; > +#endif > + > + ucr = usb_get_intfdata(to_usb_interface(pdev->dev.parent)); > + if (!ucr) > + return -ENXIO; > + > + dev_dbg(&(pdev->dev), ": Realtek USB SD/MMC controller found\n"); > + > + mmc = mmc_alloc_host(sizeof(*host), &pdev->dev); > + if (!mmc) > + return -ENOMEM; > + > + host = mmc_priv(mmc); > + host->ucr = ucr; > + host->mmc = mmc; > + host->pdev = pdev; > + platform_set_drvdata(pdev, host); > + > + mutex_init(&host->host_mutex); > + rtsx_usb_init_host(host); > + pm_runtime_enable(&pdev->dev); > + > +#ifdef RTSX_USB_USE_LEDS_CLASS > + snprintf(host->led_name, sizeof(host->led_name), > + "%s::", mmc_hostname(mmc)); > + host->led.name = host->led_name; > + host->led.brightness = LED_OFF; > + host->led.default_trigger = mmc_hostname(mmc); > + host->led.brightness_set = rtsx_usb_led_control; > + > + err = led_classdev_register(mmc_dev(mmc), &host->led); > + if (err) > + dev_err(&(pdev->dev), > + "Failed to register LED device: %d\n", err); > + INIT_WORK(&host->led_work, rtsx_usb_update_led); > + > +#endif > + mmc_add_host(mmc); > + > + return 0; > +} > + > +static int rtsx_usb_sdmmc_drv_remove(struct platform_device *pdev) > +{ > + struct rtsx_usb_sdmmc *host = platform_get_drvdata(pdev); > + struct mmc_host *mmc; > + > + if (!host) > + return 0; > + > + mmc = host->mmc; > + host->host_removal = true; > + > + mutex_lock(&host->host_mutex); > + if (host->mrq) { > + dev_dbg(&(pdev->dev), > + "%s: Controller removed during transfer\n", > + mmc_hostname(mmc)); > + host->mrq->cmd->error = -ENOMEDIUM; > + if (host->mrq->stop) > + host->mrq->stop->error = -ENOMEDIUM; > + mmc_request_done(mmc, host->mrq); > + } > + mutex_unlock(&host->host_mutex); > + > + mmc_remove_host(mmc); > + > +#ifdef RTSX_USB_USE_LEDS_CLASS > + cancel_work_sync(&host->led_work); > + led_classdev_unregister(&host->led); > +#endif > + > + mmc_free_host(mmc); > + > + /* Balance possible unbalanced usage count > + * e.g. unconditional module removal > + */ > + if (pm_runtime_active(&pdev->dev)) > + pm_runtime_put(&pdev->dev); This shouldn't be needed. mmc_remove_host() will invoke your ->set_ios() callback with power_mode set to MMC_POWER_OFF. > + > + pm_runtime_disable(&pdev->dev); > + platform_set_drvdata(pdev, NULL); > + > + dev_dbg(&(pdev->dev), > + ": Realtek USB SD/MMC module has been removed\n"); > + > + return 0; > +} > + > +static struct platform_device_id rtsx_usb_sdmmc_ids[] = { > + { > + .name = "rtsx_usb_sdmmc", > + }, { > + /* sentinel */ > + } > +}; > +MODULE_DEVICE_TABLE(platform, rtsx_usb_sdmmc_ids); > + > +static struct platform_driver rtsx_usb_sdmmc_driver = { > + .probe = rtsx_usb_sdmmc_drv_probe, > + .remove = rtsx_usb_sdmmc_drv_remove, > + .id_table = rtsx_usb_sdmmc_ids, > + .driver = { > + .owner = THIS_MODULE, > + .name = "rtsx_usb_sdmmc", > + }, > +}; > +module_platform_driver(rtsx_usb_sdmmc_driver); > + > +MODULE_LICENSE("GPL v2"); > +MODULE_AUTHOR("Roger Tseng <rogerable@realtek.com>"); > +MODULE_DESCRIPTION("Realtek USB SD/MMC Card Host Driver"); > -- > 1.8.2 > Fix the minor thing above and you may add my ack! Kind regards Ulf Hansson ^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v6 4/4] memstick: Add realtek USB memstick host driver 2014-04-09 6:15 [PATCH v6 0/4] Add modules for realtek USB card reader rogerable ` (2 preceding siblings ...) 2014-04-09 6:16 ` [PATCH v6 3/4] mmc: Add realtek USB sdmmc host driver rogerable @ 2014-04-09 6:16 ` rogerable 3 siblings, 0 replies; 6+ messages in thread From: rogerable @ 2014-04-09 6:16 UTC (permalink / raw) To: Samuel Ortiz, Lee Jones, Chris Ball, Greg Kroah-Hartman, Maxim Levitsky, Alex Dubov, Dan Carpenter, Ulf Hansson, Andrew Morton, Oliver Neukum Cc: rogerable, linux-kernel, linux-mmc, driverdev-devel, wei_wang, micky_ching From: Roger Tseng <rogerable@realtek.com> Realtek USB memstick host driver provides memstick host support based on the Realtek USB card reader MFD driver. Signed-off-by: Roger Tseng <rogerable@realtek.com> --- drivers/memstick/host/Kconfig | 10 + drivers/memstick/host/Makefile | 1 + drivers/memstick/host/rtsx_usb_ms.c | 839 ++++++++++++++++++++++++++++++++++++ 3 files changed, 850 insertions(+) create mode 100644 drivers/memstick/host/rtsx_usb_ms.c diff --git a/drivers/memstick/host/Kconfig b/drivers/memstick/host/Kconfig index 1b37cf8..7310e32 100644 --- a/drivers/memstick/host/Kconfig +++ b/drivers/memstick/host/Kconfig @@ -52,3 +52,13 @@ config MEMSTICK_REALTEK_PCI To compile this driver as a module, choose M here: the module will be called rtsx_pci_ms. + +config MEMSTICK_REALTEK_USB + tristate "Realtek USB Memstick Card Interface Driver" + depends on MFD_RTSX_USB + help + Say Y here to include driver code to support Memstick card interface + of Realtek RTS5129/39 series USB card reader + + To compile this driver as a module, choose M here: the module will + be called rts5139_ms. diff --git a/drivers/memstick/host/Makefile b/drivers/memstick/host/Makefile index af3459d..491c955 100644 --- a/drivers/memstick/host/Makefile +++ b/drivers/memstick/host/Makefile @@ -6,3 +6,4 @@ obj-$(CONFIG_MEMSTICK_TIFM_MS) += tifm_ms.o obj-$(CONFIG_MEMSTICK_JMICRON_38X) += jmb38x_ms.o obj-$(CONFIG_MEMSTICK_R592) += r592.o obj-$(CONFIG_MEMSTICK_REALTEK_PCI) += rtsx_pci_ms.o +obj-$(CONFIG_MEMSTICK_REALTEK_USB) += rtsx_usb_ms.o diff --git a/drivers/memstick/host/rtsx_usb_ms.c b/drivers/memstick/host/rtsx_usb_ms.c new file mode 100644 index 0000000..a7282b7 --- /dev/null +++ b/drivers/memstick/host/rtsx_usb_ms.c @@ -0,0 +1,839 @@ +/* Realtek USB Memstick Card Interface driver + * + * Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved. + * + * 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, see <http://www.gnu.org/licenses/>. + * + * Author: + * Roger Tseng <rogerable@realtek.com> + */ + +#include <linux/module.h> +#include <linux/highmem.h> +#include <linux/delay.h> +#include <linux/platform_device.h> +#include <linux/workqueue.h> +#include <linux/memstick.h> +#include <linux/kthread.h> +#include <linux/mfd/rtsx_usb.h> +#include <linux/pm_runtime.h> +#include <linux/mutex.h> +#include <linux/sched.h> +#include <linux/completion.h> +#include <asm/unaligned.h> + +struct rtsx_usb_ms { + struct platform_device *pdev; + struct rtsx_ucr *ucr; + struct memstick_host *msh; + struct memstick_request *req; + + struct mutex host_mutex; + struct work_struct handle_req; + + struct task_struct *detect_ms; + struct completion detect_ms_exit; + + u8 ssc_depth; + unsigned int clock; + int power_mode; + unsigned char ifmode; + bool eject; +}; + +static inline struct device *ms_dev(struct rtsx_usb_ms *host) +{ + return &(host->pdev->dev); +} + +static inline void ms_clear_error(struct rtsx_usb_ms *host) +{ + struct rtsx_ucr *ucr = host->ucr; + rtsx_usb_ep0_write_register(ucr, CARD_STOP, + MS_STOP | MS_CLR_ERR, + MS_STOP | MS_CLR_ERR); + + rtsx_usb_clear_dma_err(ucr); + rtsx_usb_clear_fsm_err(ucr); +} + +#ifdef DEBUG + +static void ms_print_debug_regs(struct rtsx_usb_ms *host) +{ + struct rtsx_ucr *ucr = host->ucr; + u16 i; + u8 *ptr; + + /* Print MS host internal registers */ + rtsx_usb_init_cmd(ucr); + + /* MS_CFG to MS_INT_REG */ + for (i = 0xFD40; i <= 0xFD44; i++) + rtsx_usb_add_cmd(ucr, READ_REG_CMD, i, 0, 0); + + /* CARD_SHARE_MODE to CARD_GPIO */ + for (i = 0xFD51; i <= 0xFD56; i++) + rtsx_usb_add_cmd(ucr, READ_REG_CMD, i, 0, 0); + + /* CARD_PULL_CTLx */ + for (i = 0xFD60; i <= 0xFD65; i++) + rtsx_usb_add_cmd(ucr, READ_REG_CMD, i, 0, 0); + + /* CARD_DATA_SOURCE, CARD_SELECT, CARD_CLK_EN, CARD_PWR_CTL */ + rtsx_usb_add_cmd(ucr, READ_REG_CMD, CARD_DATA_SOURCE, 0, 0); + rtsx_usb_add_cmd(ucr, READ_REG_CMD, CARD_SELECT, 0, 0); + rtsx_usb_add_cmd(ucr, READ_REG_CMD, CARD_CLK_EN, 0, 0); + rtsx_usb_add_cmd(ucr, READ_REG_CMD, CARD_PWR_CTL, 0, 0); + + rtsx_usb_send_cmd(ucr, MODE_CR, 100); + rtsx_usb_get_rsp(ucr, 21, 100); + + ptr = ucr->rsp_buf; + for (i = 0xFD40; i <= 0xFD44; i++) + dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++)); + for (i = 0xFD51; i <= 0xFD56; i++) + dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++)); + for (i = 0xFD60; i <= 0xFD65; i++) + dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++)); + + dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", CARD_DATA_SOURCE, *(ptr++)); + dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", CARD_SELECT, *(ptr++)); + dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", CARD_CLK_EN, *(ptr++)); + dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", CARD_PWR_CTL, *(ptr++)); +} + +#else + +static void ms_print_debug_regs(struct rtsx_usb_ms *host) +{ +} + +#endif + +static int ms_pull_ctl_disable_lqfp48(struct rtsx_ucr *ucr) +{ + rtsx_usb_init_cmd(ucr); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0x55); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0x55); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0x95); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x55); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x55); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0xA5); + + return rtsx_usb_send_cmd(ucr, MODE_C, 100); +} + +static int ms_pull_ctl_disable_qfn24(struct rtsx_ucr *ucr) +{ + rtsx_usb_init_cmd(ucr); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0x65); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0x55); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0x95); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x55); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x56); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0x59); + + return rtsx_usb_send_cmd(ucr, MODE_C, 100); +} + +static int ms_pull_ctl_enable_lqfp48(struct rtsx_ucr *ucr) +{ + rtsx_usb_init_cmd(ucr); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0x55); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0x55); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0x95); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x55); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x55); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0xA5); + + return rtsx_usb_send_cmd(ucr, MODE_C, 100); +} + +static int ms_pull_ctl_enable_qfn24(struct rtsx_ucr *ucr) +{ + rtsx_usb_init_cmd(ucr); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0x65); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0x55); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0x95); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x55); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x55); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0x59); + + return rtsx_usb_send_cmd(ucr, MODE_C, 100); +} + +static int ms_power_on(struct rtsx_usb_ms *host) +{ + struct rtsx_ucr *ucr = host->ucr; + int err; + + dev_dbg(ms_dev(host), "%s\n", __func__); + + rtsx_usb_init_cmd(ucr); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_SELECT, 0x07, MS_MOD_SEL); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_SHARE_MODE, + CARD_SHARE_MASK, CARD_SHARE_MS); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_EN, + MS_CLK_EN, MS_CLK_EN); + err = rtsx_usb_send_cmd(ucr, MODE_C, 100); + if (err < 0) + return err; + + if (CHECK_PKG(ucr, LQFP48)) + err = ms_pull_ctl_enable_lqfp48(ucr); + else + err = ms_pull_ctl_enable_qfn24(ucr); + if (err < 0) + return err; + + err = rtsx_usb_write_register(ucr, CARD_PWR_CTL, + POWER_MASK, PARTIAL_POWER_ON); + if (err) + return err; + + usleep_range(800, 1000); + + rtsx_usb_init_cmd(ucr); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_PWR_CTL, + POWER_MASK, POWER_ON); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_OE, + MS_OUTPUT_EN, MS_OUTPUT_EN); + + return rtsx_usb_send_cmd(ucr, MODE_C, 100); +} + +static int ms_power_off(struct rtsx_usb_ms *host) +{ + struct rtsx_ucr *ucr = host->ucr; + int err; + + dev_dbg(ms_dev(host), "%s\n", __func__); + + rtsx_usb_init_cmd(ucr); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_CLK_EN, MS_CLK_EN, 0); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_OE, MS_OUTPUT_EN, 0); + + err = rtsx_usb_send_cmd(ucr, MODE_C, 100); + if (err < 0) + return err; + + if (CHECK_PKG(ucr, LQFP48)) + return ms_pull_ctl_disable_lqfp48(ucr); + + return ms_pull_ctl_disable_qfn24(ucr); +} + +static int ms_transfer_data(struct rtsx_usb_ms *host, unsigned char data_dir, + u8 tpc, u8 cfg, struct scatterlist *sg) +{ + struct rtsx_ucr *ucr = host->ucr; + int err; + unsigned int length = sg->length; + u16 sec_cnt = (u16)(length / 512); + u8 trans_mode, dma_dir, flag; + unsigned int pipe; + struct memstick_dev *card = host->msh->card; + + dev_dbg(ms_dev(host), "%s: tpc = 0x%02x, data_dir = %s, length = %d\n", + __func__, tpc, (data_dir == READ) ? "READ" : "WRITE", + length); + + if (data_dir == READ) { + flag = MODE_CDIR; + dma_dir = DMA_DIR_FROM_CARD; + if (card->id.type != MEMSTICK_TYPE_PRO) + trans_mode = MS_TM_NORMAL_READ; + else + trans_mode = MS_TM_AUTO_READ; + pipe = usb_rcvbulkpipe(ucr->pusb_dev, EP_BULK_IN); + } else { + flag = MODE_CDOR; + dma_dir = DMA_DIR_TO_CARD; + if (card->id.type != MEMSTICK_TYPE_PRO) + trans_mode = MS_TM_NORMAL_WRITE; + else + trans_mode = MS_TM_AUTO_WRITE; + pipe = usb_sndbulkpipe(ucr->pusb_dev, EP_BULK_OUT); + } + + rtsx_usb_init_cmd(ucr); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_TPC, 0xFF, tpc); + if (card->id.type == MEMSTICK_TYPE_PRO) { + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_SECTOR_CNT_H, + 0xFF, (u8)(sec_cnt >> 8)); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_SECTOR_CNT_L, + 0xFF, (u8)sec_cnt); + } + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_TRANS_CFG, 0xFF, cfg); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_TC3, + 0xFF, (u8)(length >> 24)); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_TC2, + 0xFF, (u8)(length >> 16)); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_TC1, + 0xFF, (u8)(length >> 8)); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_TC0, 0xFF, + (u8)length); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MC_DMA_CTL, + 0x03 | DMA_PACK_SIZE_MASK, dma_dir | DMA_EN | DMA_512); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_DATA_SOURCE, + 0x01, RING_BUFFER); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_TRANSFER, + 0xFF, MS_TRANSFER_START | trans_mode); + rtsx_usb_add_cmd(ucr, CHECK_REG_CMD, MS_TRANSFER, + MS_TRANSFER_END, MS_TRANSFER_END); + + err = rtsx_usb_send_cmd(ucr, flag | STAGE_MS_STATUS, 100); + if (err) + return err; + + err = rtsx_usb_transfer_data(ucr, pipe, sg, length, + 1, NULL, 10000); + if (err) + goto err_out; + + err = rtsx_usb_get_rsp(ucr, 3, 15000); + if (err) + goto err_out; + + if (ucr->rsp_buf[0] & MS_TRANSFER_ERR || + ucr->rsp_buf[1] & (MS_CRC16_ERR | MS_RDY_TIMEOUT)) { + err = -EIO; + goto err_out; + } + return 0; +err_out: + ms_clear_error(host); + return err; +} + +static int ms_write_bytes(struct rtsx_usb_ms *host, u8 tpc, + u8 cfg, u8 cnt, u8 *data, u8 *int_reg) +{ + struct rtsx_ucr *ucr = host->ucr; + int err, i; + + dev_dbg(ms_dev(host), "%s: tpc = 0x%02x\n", __func__, tpc); + + rtsx_usb_init_cmd(ucr); + + for (i = 0; i < cnt; i++) + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, + PPBUF_BASE2 + i, 0xFF, data[i]); + + if (cnt % 2) + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, + PPBUF_BASE2 + i, 0xFF, 0xFF); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_TPC, 0xFF, tpc); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_BYTE_CNT, 0xFF, cnt); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_TRANS_CFG, 0xFF, cfg); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_DATA_SOURCE, + 0x01, PINGPONG_BUFFER); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_TRANSFER, + 0xFF, MS_TRANSFER_START | MS_TM_WRITE_BYTES); + rtsx_usb_add_cmd(ucr, CHECK_REG_CMD, MS_TRANSFER, + MS_TRANSFER_END, MS_TRANSFER_END); + rtsx_usb_add_cmd(ucr, READ_REG_CMD, MS_TRANS_CFG, 0, 0); + + err = rtsx_usb_send_cmd(ucr, MODE_CR, 100); + if (err) + return err; + + err = rtsx_usb_get_rsp(ucr, 2, 5000); + if (err || (ucr->rsp_buf[0] & MS_TRANSFER_ERR)) { + u8 val; + + rtsx_usb_ep0_read_register(ucr, MS_TRANS_CFG, &val); + dev_dbg(ms_dev(host), "MS_TRANS_CFG: 0x%02x\n", val); + + if (int_reg) + *int_reg = val & 0x0F; + + ms_print_debug_regs(host); + + ms_clear_error(host); + + if (!(tpc & 0x08)) { + if (val & MS_CRC16_ERR) + return -EIO; + } else { + if (!(val & 0x80)) { + if (val & (MS_INT_ERR | MS_INT_CMDNK)) + return -EIO; + } + } + + return -ETIMEDOUT; + } + + if (int_reg) + *int_reg = ucr->rsp_buf[1] & 0x0F; + + return 0; +} + +static int ms_read_bytes(struct rtsx_usb_ms *host, u8 tpc, + u8 cfg, u8 cnt, u8 *data, u8 *int_reg) +{ + struct rtsx_ucr *ucr = host->ucr; + int err, i; + u8 *ptr; + + dev_dbg(ms_dev(host), "%s: tpc = 0x%02x\n", __func__, tpc); + + rtsx_usb_init_cmd(ucr); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_TPC, 0xFF, tpc); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_BYTE_CNT, 0xFF, cnt); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_TRANS_CFG, 0xFF, cfg); + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, CARD_DATA_SOURCE, + 0x01, PINGPONG_BUFFER); + + rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, MS_TRANSFER, + 0xFF, MS_TRANSFER_START | MS_TM_READ_BYTES); + rtsx_usb_add_cmd(ucr, CHECK_REG_CMD, MS_TRANSFER, + MS_TRANSFER_END, MS_TRANSFER_END); + for (i = 0; i < cnt - 1; i++) + rtsx_usb_add_cmd(ucr, READ_REG_CMD, PPBUF_BASE2 + i, 0, 0); + if (cnt % 2) + rtsx_usb_add_cmd(ucr, READ_REG_CMD, PPBUF_BASE2 + cnt, 0, 0); + else + rtsx_usb_add_cmd(ucr, READ_REG_CMD, + PPBUF_BASE2 + cnt - 1, 0, 0); + + rtsx_usb_add_cmd(ucr, READ_REG_CMD, MS_TRANS_CFG, 0, 0); + + err = rtsx_usb_send_cmd(ucr, MODE_CR, 100); + if (err) + return err; + + err = rtsx_usb_get_rsp(ucr, cnt + 2, 5000); + if (err || (ucr->rsp_buf[0] & MS_TRANSFER_ERR)) { + u8 val; + + rtsx_usb_ep0_read_register(ucr, MS_TRANS_CFG, &val); + dev_dbg(ms_dev(host), "MS_TRANS_CFG: 0x%02x\n", val); + + if (int_reg && (host->ifmode != MEMSTICK_SERIAL)) + *int_reg = val & 0x0F; + + ms_print_debug_regs(host); + + ms_clear_error(host); + + if (!(tpc & 0x08)) { + if (val & MS_CRC16_ERR) + return -EIO; + } else { + if (!(val & 0x80)) { + if (val & (MS_INT_ERR | MS_INT_CMDNK)) + return -EIO; + } + } + + return -ETIMEDOUT; + } + + ptr = ucr->rsp_buf + 1; + for (i = 0; i < cnt; i++) + data[i] = *ptr++; + + + if (int_reg && (host->ifmode != MEMSTICK_SERIAL)) + *int_reg = *ptr & 0x0F; + + return 0; +} + +static int rtsx_usb_ms_issue_cmd(struct rtsx_usb_ms *host) +{ + struct memstick_request *req = host->req; + int err = 0; + u8 cfg = 0, int_reg; + + dev_dbg(ms_dev(host), "%s\n", __func__); + + if (req->need_card_int) { + if (host->ifmode != MEMSTICK_SERIAL) + cfg = WAIT_INT; + } + + if (req->long_data) { + err = ms_transfer_data(host, req->data_dir, + req->tpc, cfg, &(req->sg)); + } else { + if (req->data_dir == READ) + err = ms_read_bytes(host, req->tpc, cfg, + req->data_len, req->data, &int_reg); + else + err = ms_write_bytes(host, req->tpc, cfg, + req->data_len, req->data, &int_reg); + } + if (err < 0) + return err; + + if (req->need_card_int) { + if (host->ifmode == MEMSTICK_SERIAL) { + err = ms_read_bytes(host, MS_TPC_GET_INT, + NO_WAIT_INT, 1, &req->int_reg, NULL); + if (err < 0) + return err; + } else { + + if (int_reg & MS_INT_CMDNK) + req->int_reg |= MEMSTICK_INT_CMDNAK; + if (int_reg & MS_INT_BREQ) + req->int_reg |= MEMSTICK_INT_BREQ; + if (int_reg & MS_INT_ERR) + req->int_reg |= MEMSTICK_INT_ERR; + if (int_reg & MS_INT_CED) + req->int_reg |= MEMSTICK_INT_CED; + } + dev_dbg(ms_dev(host), "int_reg: 0x%02x\n", req->int_reg); + } + + return 0; +} + +static void rtsx_usb_ms_handle_req(struct work_struct *work) +{ + struct rtsx_usb_ms *host = container_of(work, + struct rtsx_usb_ms, handle_req); + struct rtsx_ucr *ucr = host->ucr; + struct memstick_host *msh = host->msh; + int rc; + + if (!host->req) { + do { + rc = memstick_next_req(msh, &host->req); + dev_dbg(ms_dev(host), "next req %d\n", rc); + + if (!rc) { + mutex_lock(&ucr->dev_mutex); + + if (rtsx_usb_card_exclusive_check(ucr, + RTSX_USB_MS_CARD)) + host->req->error = -EIO; + else + host->req->error = + rtsx_usb_ms_issue_cmd(host); + + mutex_unlock(&ucr->dev_mutex); + + dev_dbg(ms_dev(host), "req result %d\n", + host->req->error); + } + } while (!rc); + } + +} + +static void rtsx_usb_ms_request(struct memstick_host *msh) +{ + struct rtsx_usb_ms *host = memstick_priv(msh); + + dev_dbg(ms_dev(host), "--> %s\n", __func__); + + if (!host->eject) + schedule_work(&host->handle_req); +} + +static int rtsx_usb_ms_set_param(struct memstick_host *msh, + enum memstick_param param, int value) +{ + struct rtsx_usb_ms *host = memstick_priv(msh); + struct rtsx_ucr *ucr = host->ucr; + unsigned int clock = 0; + u8 ssc_depth = 0; + int err; + + dev_dbg(ms_dev(host), "%s: param = %d, value = %d\n", + __func__, param, value); + + mutex_lock(&ucr->dev_mutex); + + err = rtsx_usb_card_exclusive_check(ucr, RTSX_USB_MS_CARD); + if (err) + goto out; + + switch (param) { + case MEMSTICK_POWER: + if (value == host->power_mode) + break; + + if (value == MEMSTICK_POWER_ON) { + pm_runtime_get_sync(ms_dev(host)); + err = ms_power_on(host); + } else if (value == MEMSTICK_POWER_OFF) { + err = ms_power_off(host); + if (host->msh->card) + pm_runtime_put_noidle(ms_dev(host)); + else + pm_runtime_put(ms_dev(host)); + } else + err = -EINVAL; + if (!err) + host->power_mode = value; + break; + + case MEMSTICK_INTERFACE: + if (value == MEMSTICK_SERIAL) { + clock = 19000000; + ssc_depth = SSC_DEPTH_512K; + err = rtsx_usb_write_register(ucr, MS_CFG, 0x5A, + MS_BUS_WIDTH_1 | PUSH_TIME_DEFAULT); + if (err < 0) + break; + } else if (value == MEMSTICK_PAR4) { + clock = 39000000; + ssc_depth = SSC_DEPTH_1M; + + err = rtsx_usb_write_register(ucr, MS_CFG, 0x5A, + MS_BUS_WIDTH_4 | PUSH_TIME_ODD | + MS_NO_CHECK_INT); + if (err < 0) + break; + } else { + err = -EINVAL; + break; + } + + err = rtsx_usb_switch_clock(ucr, clock, + ssc_depth, false, true, false); + if (err < 0) { + dev_dbg(ms_dev(host), "switch clock failed\n"); + break; + } + + host->ssc_depth = ssc_depth; + host->clock = clock; + host->ifmode = value; + break; + default: + err = -EINVAL; + break; + } +out: + mutex_unlock(&ucr->dev_mutex); + + /* power-on delay */ + if (param == MEMSTICK_POWER && value == MEMSTICK_POWER_ON) + usleep_range(10000, 12000); + + dev_dbg(ms_dev(host), "%s: return = %d\n", __func__, err); + return err; +} + +#ifdef CONFIG_PM_SLEEP +static int rtsx_usb_ms_suspend(struct device *dev) +{ + struct rtsx_usb_ms *host = dev_get_drvdata(dev); + struct memstick_host *msh = host->msh; + + dev_dbg(ms_dev(host), "--> %s\n", __func__); + + memstick_suspend_host(msh); + return 0; +} + +static int rtsx_usb_ms_resume(struct device *dev) +{ + struct rtsx_usb_ms *host = dev_get_drvdata(dev); + struct memstick_host *msh = host->msh; + + dev_dbg(ms_dev(host), "--> %s\n", __func__); + + memstick_resume_host(msh); + return 0; +} +#endif /* CONFIG_PM_SLEEP */ + +/* + * Thread function of ms card slot detection. The thread starts right after + * successful host addition. It stops while the driver removal function sets + * host->eject true. + */ +static int rtsx_usb_detect_ms_card(void *__host) +{ + struct rtsx_usb_ms *host = (struct rtsx_usb_ms *)__host; + struct rtsx_ucr *ucr = host->ucr; + u8 val = 0; + int err; + + for (;;) { + mutex_lock(&ucr->dev_mutex); + + /* Check pending MS card changes */ + err = rtsx_usb_read_register(ucr, CARD_INT_PEND, &val); + if (err) { + mutex_unlock(&ucr->dev_mutex); + goto poll_again; + } + + /* Clear the pending */ + rtsx_usb_write_register(ucr, CARD_INT_PEND, + XD_INT | MS_INT | SD_INT, + XD_INT | MS_INT | SD_INT); + + mutex_unlock(&ucr->dev_mutex); + + if (val & MS_INT) { + dev_dbg(ms_dev(host), "MS slot change detected\n"); + memstick_detect_change(host->msh); + } + +poll_again: + if (host->eject) + break; + + msleep(1000); + } + + complete(&host->detect_ms_exit); + return 0; +} + +static int rtsx_usb_ms_drv_probe(struct platform_device *pdev) +{ + struct memstick_host *msh; + struct rtsx_usb_ms *host; + struct rtsx_ucr *ucr; + int err; + + ucr = usb_get_intfdata(to_usb_interface(pdev->dev.parent)); + if (!ucr) + return -ENXIO; + + dev_dbg(&(pdev->dev), + "Realtek USB Memstick controller found\n"); + + msh = memstick_alloc_host(sizeof(*host), &pdev->dev); + if (!msh) + return -ENOMEM; + + host = memstick_priv(msh); + host->ucr = ucr; + host->msh = msh; + host->pdev = pdev; + host->power_mode = MEMSTICK_POWER_OFF; + platform_set_drvdata(pdev, host); + + mutex_init(&host->host_mutex); + INIT_WORK(&host->handle_req, rtsx_usb_ms_handle_req); + + init_completion(&host->detect_ms_exit); + host->detect_ms = kthread_create(rtsx_usb_detect_ms_card, host, + "rtsx_usb_ms_%d", pdev->id); + if (IS_ERR(host->detect_ms)) { + dev_dbg(&(pdev->dev), + "Unable to create polling thread.\n"); + err = PTR_ERR(host->detect_ms); + goto err_out; + } + + msh->request = rtsx_usb_ms_request; + msh->set_param = rtsx_usb_ms_set_param; + msh->caps = MEMSTICK_CAP_PAR4; + + pm_runtime_enable(&pdev->dev); + err = memstick_add_host(msh); + if (err) + goto err_out; + + wake_up_process(host->detect_ms); + return 0; +err_out: + memstick_free_host(msh); + return err; +} + +static int rtsx_usb_ms_drv_remove(struct platform_device *pdev) +{ + struct rtsx_usb_ms *host = platform_get_drvdata(pdev); + struct memstick_host *msh; + int err; + + msh = host->msh; + host->eject = true; + cancel_work_sync(&host->handle_req); + + mutex_lock(&host->host_mutex); + if (host->req) { + dev_dbg(&(pdev->dev), + "%s: Controller removed during transfer\n", + dev_name(&msh->dev)); + host->req->error = -ENOMEDIUM; + do { + err = memstick_next_req(msh, &host->req); + if (!err) + host->req->error = -ENOMEDIUM; + } while (!err); + } + mutex_unlock(&host->host_mutex); + + wait_for_completion(&host->detect_ms_exit); + memstick_remove_host(msh); + memstick_free_host(msh); + + /* Balance possible unbalanced usage count + * e.g. unconditional module removal + */ + if (pm_runtime_active(ms_dev(host))) + pm_runtime_put(ms_dev(host)); + + pm_runtime_disable(&pdev->dev); + platform_set_drvdata(pdev, NULL); + + dev_dbg(&(pdev->dev), + ": Realtek USB Memstick controller has been removed\n"); + + return 0; +} + +static SIMPLE_DEV_PM_OPS(rtsx_usb_ms_pm_ops, + rtsx_usb_ms_suspend, rtsx_usb_ms_resume); + +static struct platform_device_id rtsx_usb_ms_ids[] = { + { + .name = "rtsx_usb_ms", + }, { + /* sentinel */ + } +}; +MODULE_DEVICE_TABLE(platform, rtsx_usb_ms_ids); + +static struct platform_driver rtsx_usb_ms_driver = { + .probe = rtsx_usb_ms_drv_probe, + .remove = rtsx_usb_ms_drv_remove, + .id_table = rtsx_usb_ms_ids, + .driver = { + .owner = THIS_MODULE, + .name = "rtsx_usb_ms", + .pm = &rtsx_usb_ms_pm_ops, + }, +}; +module_platform_driver(rtsx_usb_ms_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Roger Tseng <rogerable@realtek.com>"); +MODULE_DESCRIPTION("Realtek USB Memstick Card Host Driver"); -- 1.8.2 ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2014-04-09 8:48 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2014-04-09 6:15 [PATCH v6 0/4] Add modules for realtek USB card reader rogerable 2014-04-09 6:16 ` [PATCH v6 1/4] [v6 fix] mfd/rtsx_usb: fix possible race condition rogerable 2014-04-09 6:16 ` [PATCH v6 2/4] [v6 fix] mfd/rtsx_usb: add comment in rtsx_usb_suspend rogerable 2014-04-09 6:16 ` [PATCH v6 3/4] mmc: Add realtek USB sdmmc host driver rogerable 2014-04-09 8:48 ` Ulf Hansson 2014-04-09 6:16 ` [PATCH v6 4/4] memstick: Add realtek USB memstick " rogerable
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