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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-07 20:14:19 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-07 20:14:19 -0700 |
commit | 8de4651abe61c6b6a94a70a57ef163020fed05ee (patch) | |
tree | a2455b59b7df7239a5819b9cf2248e27eef483c4 /drivers/mmc | |
parent | 327fff3e1391a27dcc89de6e0481689a865361c9 (diff) | |
parent | 9c31e8840836de447e1e508a6d756af419790ed6 (diff) | |
download | op-kernel-dev-8de4651abe61c6b6a94a70a57ef163020fed05ee.zip op-kernel-dev-8de4651abe61c6b6a94a70a57ef163020fed05ee.tar.gz |
Merge tag 'mfd-3.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-next
Pull MFD (multi-function device) updates from Samuel Ortiz:
"For the 3.12 merge window we have one new driver for the DA9063 PMIC
from Dialog Semiconductor.
Besides that driver we also have:
- Device tree support for the s2mps11 driver
- More devm_* conversion for the pm8921, max89xx, menelaus, tps65010,
wl1273 and pcf50633-adc drivers.
- A conversion to threaded IRQ and IRQ domain for the twl6030 driver.
- A fairly big update for the rtsx driver: Better power saving
support, better vendor settings handling, and a few fixes.
- Support for a couple more boards (COMe-bHL6 and COMe-cTH6) for the
Kontron driver.
- A conversion to the dev_get_platdata() API for all MFD drivers.
- A removal of non-DT (legacy) support for the twl6040 driver.
- A few fixes and additions (Mic detect level) to the wm5110 register
tables.
- Regmap support for the davinci_voicecodec driver.
- The usual bunch of minor cleanups and janitorial fixes"
* tag 'mfd-3.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-next: (81 commits)
mfd: ucb1x00-core: Rewrite ucb1x00_add_dev()
mfd: ab8500-debugfs: Apply a check for -ENOMEM after allocating memory for event name
mfd: ab8500-debugfs: Apply a check for -ENOMEM after allocating memory for sysfs
mfd: timberdale: Use module_pci_driver
mfd: timberdale: Remove redundant break
mfd: timberdale: Staticize local variables
mfd: ab8500-debugfs: Staticize local variables
mfd: db8500-prcmu: Staticize clk_mgt
mfd: db8500-prcmu: Use ANSI function declaration
mfd: omap-usb-host: Staticize usbhs_driver_name
mfd: 88pm805: Fix potential NULL pdata dereference
mfd: 88pm800: Fix potential NULL pdata dereference
mfd: twl6040: Use regmap for register cache
mfd: davinci_voicecodec: Provide a regmap for register I/O
mfd: davinci_voicecodec: Remove unused read and write functions
mmc: memstick: rtsx: Modify copyright comments
mmc: rtsx: Clear SD_CLK toggle enable bit if switching voltage fail
mfd: mmc: rtsx: Change default tx phase
mfd: pcf50633-adc: Use devm_*() functions
mfd: rtsx: Copyright modifications
...
Diffstat (limited to 'drivers/mmc')
-rw-r--r-- | drivers/mmc/host/rtsx_pci_sdmmc.c | 70 |
1 files changed, 51 insertions, 19 deletions
diff --git a/drivers/mmc/host/rtsx_pci_sdmmc.c b/drivers/mmc/host/rtsx_pci_sdmmc.c index 82a35b9..375a880e 100644 --- a/drivers/mmc/host/rtsx_pci_sdmmc.c +++ b/drivers/mmc/host/rtsx_pci_sdmmc.c @@ -1,6 +1,6 @@ /* Realtek PCI-Express SD/MMC Card Interface driver * - * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved. + * 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 as published by the @@ -17,7 +17,6 @@ * * Author: * Wei WANG <wei_wang@realsil.com.cn> - * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China */ #include <linux/module.h> @@ -56,7 +55,6 @@ struct realtek_pci_sdmmc { bool double_clk; bool eject; bool initial_mode; - bool ddr_mode; int power_state; #define SDMMC_POWER_ON 1 #define SDMMC_POWER_OFF 0 @@ -228,6 +226,7 @@ static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host, int stat_idx = 0; u8 rsp_type; int rsp_len = 5; + bool clock_toggled = false; dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD %d, arg = 0x%08x\n", __func__, cmd_idx, arg); @@ -271,6 +270,8 @@ static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host, 0xFF, SD_CLK_TOGGLE_EN); if (err < 0) goto out; + + clock_toggled = true; } rtsx_pci_init_cmd(pcr); @@ -351,6 +352,10 @@ static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host, out: cmd->error = err; + + if (err && clock_toggled) + rtsx_pci_write_register(pcr, SD_BUS_STAT, + SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP, 0); } static int sd_rw_multi(struct realtek_pci_sdmmc *host, struct mmc_request *mrq) @@ -475,18 +480,24 @@ static void sd_normal_rw(struct realtek_pci_sdmmc *host, kfree(buf); } -static int sd_change_phase(struct realtek_pci_sdmmc *host, u8 sample_point) +static int sd_change_phase(struct realtek_pci_sdmmc *host, + u8 sample_point, bool rx) { struct rtsx_pcr *pcr = host->pcr; int err; - dev_dbg(sdmmc_dev(host), "%s: sample_point = %d\n", - __func__, sample_point); + dev_dbg(sdmmc_dev(host), "%s(%s): sample_point = %d\n", + __func__, rx ? "RX" : "TX", sample_point); rtsx_pci_init_cmd(pcr); rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CLK_CTL, CHANGE_CLK, CHANGE_CLK); - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPRX_CTL, 0x1F, sample_point); + if (rx) + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, + SD_VPRX_CTL, 0x1F, sample_point); + else + rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, + SD_VPTX_CTL, 0x1F, sample_point); rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPCLK0_CTL, PHASE_NOT_RESET, 0); rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_VPCLK0_CTL, PHASE_NOT_RESET, PHASE_NOT_RESET); @@ -602,7 +613,7 @@ static int sd_tuning_rx_cmd(struct realtek_pci_sdmmc *host, int err; u8 cmd[5] = {0}; - err = sd_change_phase(host, sample_point); + err = sd_change_phase(host, sample_point, true); if (err < 0) return err; @@ -664,7 +675,7 @@ static int sd_tuning_rx(struct realtek_pci_sdmmc *host, u8 opcode) if (final_phase == 0xFF) return -EINVAL; - err = sd_change_phase(host, final_phase); + err = sd_change_phase(host, final_phase, true); if (err < 0) return err; } else { @@ -833,14 +844,11 @@ static int sd_set_power_mode(struct realtek_pci_sdmmc *host, return err; } -static int sd_set_timing(struct realtek_pci_sdmmc *host, - unsigned char timing, bool *ddr_mode) +static int sd_set_timing(struct realtek_pci_sdmmc *host, unsigned char timing) { struct rtsx_pcr *pcr = host->pcr; int err = 0; - *ddr_mode = false; - rtsx_pci_init_cmd(pcr); switch (timing) { @@ -857,8 +865,6 @@ static int sd_set_timing(struct realtek_pci_sdmmc *host, break; case MMC_TIMING_UHS_DDR50: - *ddr_mode = true; - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD_CFG1, 0x0C | SD_ASYNC_FIFO_NOT_RST, SD_DDR_MODE | SD_ASYNC_FIFO_NOT_RST); @@ -926,7 +932,7 @@ static void sdmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) sd_set_bus_width(host, ios->bus_width); sd_set_power_mode(host, ios->power_mode); - sd_set_timing(host, ios->timing, &host->ddr_mode); + sd_set_timing(host, ios->timing); host->vpclk = false; host->double_clk = true; @@ -1121,11 +1127,11 @@ static int sdmmc_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios) goto out; } +out: /* Stop toggle SD clock in idle */ err = rtsx_pci_write_register(pcr, SD_BUS_STAT, SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP, 0); -out: mutex_unlock(&pcr->pcr_mutex); return err; @@ -1148,9 +1154,35 @@ static int sdmmc_execute_tuning(struct mmc_host *mmc, u32 opcode) rtsx_pci_start_run(pcr); - if (!host->ddr_mode) - err = sd_tuning_rx(host, MMC_SEND_TUNING_BLOCK); + /* Set initial TX phase */ + switch (mmc->ios.timing) { + case MMC_TIMING_UHS_SDR104: + err = sd_change_phase(host, SDR104_TX_PHASE(pcr), false); + break; + + case MMC_TIMING_UHS_SDR50: + err = sd_change_phase(host, SDR50_TX_PHASE(pcr), false); + break; + + case MMC_TIMING_UHS_DDR50: + err = sd_change_phase(host, DDR50_TX_PHASE(pcr), false); + break; + + default: + err = 0; + } + if (err) + goto out; + + /* Tuning RX phase */ + if ((mmc->ios.timing == MMC_TIMING_UHS_SDR104) || + (mmc->ios.timing == MMC_TIMING_UHS_SDR50)) + err = sd_tuning_rx(host, opcode); + else if (mmc->ios.timing == MMC_TIMING_UHS_DDR50) + err = sd_change_phase(host, DDR50_RX_PHASE(pcr), true); + +out: mutex_unlock(&pcr->pcr_mutex); return err; |