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path: root/drivers/mmc/host/dw_mmc-exynos.c
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2021-11-02mmc: dw_mmc: exynos: fix the finding clock sample valueJaehoon Chung
commit 697542bceae51f7620af333b065dd09d213629fb upstream. Even though there are candiates value if can't find best value, it's returned -EIO. It's not proper behavior. If there is not best value, use a first candiate value to work eMMC. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Christian Hewitt <christianshewitt@gmail.com> Cc: stable@vger.kernel.org Fixes: c537a1c5ff63 ("mmc: dw_mmc: exynos: add variable delay tuning sequence") Link: https://lore.kernel.org/r/20211022082106.1557-1-jh80.chung@samsung.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-27mmc: mmc: extend the mmc_send_tuning()Chaotian Jing
The mmc_execute_tuning() has already prepared the opcode, there is no need to prepare it again at mmc_send_tuning(), and, there is a BUG of mmc_send_tuning() to determine the opcode by bus width, assume eMMC was running at HS200, 4bit mode, then the mmc_send_tuning() will overwrite the opcode from CMD21 to CMD19, then got error. in addition, extend an argument of "cmd_error" to allow getting if there was cmd error when tune response. Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com> [Ulf: Rebased patch] Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-06-01mmc: dw_mmc: exynos: Fix modalias to make module auto-loading workZhangfei Gao
Make the modalias match driver name, this is required to make module auto-loading work. Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-03-23mmc: dw_mmc: exynos: dw_mci_exynos_prepare_hs400_tuning() can be staticWu Fengguang
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-03-23mmc: dw_mmc: exynos: Support eMMC's HS400 modeSeungwon Jeon
Implements HS400 mode support for exynos host driver. This also include some updates as new mode is added. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com> [Alim: addressed review comments] Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-01-28mmc: dw_mmc: exynos: remove incorrect __exit_p()Dmitry Torokhov
dw_mci_pltfm_remove() is not (nor should it be) marked as __exit, so we should not be using __exit_p() wrapper with it. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Reviewed-by: Doug Anderson <dianders@chromium.org> Tested-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-01-19mmc: dw_mmc: Convert to mmc_send_tuning()Ulf Hansson
Instead of having a local hack taking care of sending the tuning command and as well to verify the response pattern, let's convert to the common mmc_send_tuning() API. This change affects the Exynos variant, since it's the only one which support the dw_mmc's ->execute_tuning() callback. It's seems like dw_mmc internal logic expects failed data transfers to be ended using a stop command. Let the tuning requests also fall into this category, since there are data transfer involved. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com> Tested-by: Alim Akhtar <alim.akhtar@samsung.com>
2015-01-19mmc: dw_mmc: remove unnecessary debug messageBeomho Seo
This patch remove unnecessary 'out of memory' message on dw mmc driver. Signed-off-by: Beomho Seo <beomho.seo@samsung.com> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-01-19mmc: dw_mmc: exynos: move definitions to header fileSeungwon Jeon
Move exynos related definition to header file. And this also changes some of the registers name to match the standard naming convention. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> [Alim: updated the commit message] Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-01-19mmc: dw_mmc: exynos: don't use if clock isn't availableSeungwon Jeon
Add checking whether the clock is valid. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-11-26mmc: dw_mmc: exynos: Add support for exynos7Abhilash Kesavan
The Exynos7 has a DWMMC controller (v2.70a) which is different from prior versions. This patch adds new compatible strings for exynos7. This patch also fixes the CLKSEL register offset on exynos7. Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@samsung.com> Tested-by: Vivek Gautam <gautam.vivek@samsung.com> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-05-12mmc: dw_mmc: exynos: Staticize dw_mci_exynos_pmopsSachin Kamat
'dw_mci_exynos_pmops' is local to this file. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
2014-04-20mmc: dw_mmc: clarify DDR timing mode between SD-UHS and eMMCSeungwon Jeon
Replaced UHS_DDR50 with MMC_DDR52. And MMC_CAP_UHS_DDR50 is removed because of non-implementation of UHS signaling. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
2013-11-08mmc: dw_mmc: exynos: Revert the sdr_timing assignmentYuvaraj Kumar C D
e6c784eded7b3 ("mmc: dw_mmc: exynos: move the exynos private init") was wrongly assigning ddr_timing value to sdr_timing. This patch fixes this by reverting the sdr_timing assignment statement to the earlier location. Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@samsung.com> Acked-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-09-25mmc: dw_mmc: exynos: adjust the clock rate with speed modeSeungwon Jeon
Exynos's host has divider logic before 'cclk_in' to controller core. It means that actual clock rate of ciu clock comes from this divider value. So, source clock should be adjusted along with 'ciu_div' which indicates the host's divider ratio. Setting clock rate basically fits the required speed. Specially, 'cclk_in' should have double rate of target speed in case of DDR 8-bit mode. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Tested-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-09-25mmc: dw_mmc: exynos: add variable delay tuning sequenceSeungwon Jeon
Implements variable delay tuning. In this change, exynos host can determine the correct sampling point for the HS200 and SDR104 speed mode. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Tested-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-09-25mmc: dw_mmc: exynos: configure SMU in exynos5420Yuvaraj Kumar C D
Exynos5420 Mobile Storage Host controller has Security Management Unit (SMU) for channel 0 and channel 1 (mainly for eMMC). This time, SMU configuration is set for non-encryption mode. Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@samsung.com> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-09-25mmc: dw_mmc: exynos: move the exynos private initYuvaraj Kumar C D
Currently platform specific private data initialization is done by dw_mci_exynos_priv_init and dw_mci_exynos_parse_dt. As we already have separate platform specific device tree parser dw_mci_exynos_parse_dt, move the dw_mci_exynos_priv_init code to dw_mci_exynos_parse_dt. We can use the dw_mci_exynos_priv_init to do some actual platform specific initialization of SMU and etc. Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@samsung.com> Tested-by: Alim Akhtar <alim.akhtar@samsung.com> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-09-25mmc: dw_mmc: Add exynos resume_noirq callback to clear WAKEUP_INTDoug Anderson
If the WAKEUP_INT is asserted at wakeup and not cleared, we'll end up looping around forever. This has been seen to happen on exynos5420 silicon despite the fact that we haven't enabled any wakeup events due to a silicon errata. It is safe to do on all exynos variants. Signed-off-by: Doug Anderson <dianders@chromium.org> Acked-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-08-25mmc: dw_mmc: exynos: Add a new compatible string for exynos5420Yuvaraj Kumar C D
The Exynos5420 has a DWMMC controller which is different from prior versions.This patch adds a new compatible string for Exynos5420. Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@samsung.com> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-06-27mmc: dw_mmc: Add support DW SD/MMC driver on SOCFPGADinh Nguyen
Add platform specific functionality for the DW SD/MMC driver for SoCFPGA. Move SDMMC_CMD_USE_HOLD_REG to dw_mmc.h so other platforms can use this define. Signed-off-by: Dinh Nguyen <dinguyen@altera.com> Reviewed-by: Pavel Machek <pavel@denx.de> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Seungwon Jeon <tgih.jun@samsung.com Signed-off-by: Chris Ball <cjb@laptop.org>
2013-04-12mmc: dw_mmc: let device core setup the default pin configurationThomas Abraham
With device core now able to setup the default pin configuration, the pin configuration code based on the deprecated Samsung specific gpio bindings is removed. Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Doug Anderson <dianders@chromium.org> Tested-by: Doug Anderson <dianders@chromium.org> Acked-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-03-22mmc: dw_mmc: Add MSHC compatible for Exynos4412Dongjin Kim
This patch adds the compatible string for MSHC controller of Exynos4412. And exynos5250_dwmmc_caps is renamed to exynos_dwmmc_caps, since it has the capabilities of common features supported by Exynos4 and Exynos5. Signed-off-by: Dongjin Kim <tobetter@gmail.com> Acked-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-03-22mmc: dw_mmc: exynos: Remove unnecessary use of of_match_ptr()Sachin Kamat
'dw_mci_exynos_match' is always compiled in. Hence of_match_ptr is not required. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-03-12mmc: dw_mmc: Make dw_mci_exynos_probe staticSachin Kamat
Silences the following sparse warning: drivers/mmc/host/dw_mmc-exynos.c:218:5: warning: symbol 'dw_mci_exynos_probe' was not declared. Should it be static? Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24mmc: dw_mmc: exynos: Remove code for wp-gpiosDoug Anderson
The exynos code claimed the write protect with devm_gpio_request() but never did anything with it. That meant that anyone using a write protect GPIO would effectively be write protected all the time. The handling for wp-gpios belongs in the main dw_mmc driver and has been moved there. Signed-off-by: Doug Anderson <dianders@chromium.org> Acked-by: Seungwon Jeon <tgih.jun@samsung.com> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-11-07mmc: dw_mmc: constify dw_mci_idmac_ops in exynos back-endArnd Bergmann
The of_device_id match data is now marked as const and must not be modified. This changes the dw_mmc to mark all pointers passing the dw_mci_drv_data or dw_mci_dma_ops structures as const, and also marks the static definitions as const. drivers/mmc/host/dw_mmc-exynos.c: In function 'dw_mci_exynos_probe': drivers/mmc/host/dw_mmc-exynos.c:234:11: warning: assignment discards 'const' qualifier from pointer target type [enabled by default] Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Thomas Abraham <thomas.abraham@linaro.org> Cc: Will Newton <will.newton@imgtec.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-11-07mmc: dw_mmc: fix modular build for exynos back-endArnd Bergmann
The MODULE_DEVICE_TABLE entry for dw_mci_exynos_match was incorrectly copied from the platform back-end, which causes this error when building the driver as a loadable module: drivers/mmc/host/dw_mmc-exynos.c: At top level: drivers/mmc/host/dw_mmc-exynos.c:226:34: error: '__mod_of_device_table' aliased to undefined symbol 'dw_mci_pltfm_match' This patch fixes the problem by just using the correct string. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Thomas Abraham <thomas.abraham@linaro.org> Cc: Will Newton <will.newton@imgtec.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03mmc: dw_mmc: add support for exynos specific implementation of dw-mshcThomas Abraham
Samsung Exynos SoC's extend the dw-mshc controller for additional clock and bus control. Add support for these extensions and include provide device tree based discovery suppory as well. Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Will Newton <will.newton@imgtec.com> Signed-off-by: Chris Ball <cjb@laptop.org>
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