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2016-11-29mmc: sdhci-msm: Implement set_clock callback for sdhci-msmRitesh Harjani1-1/+65
sdhci-msm controller may have different clk-rates for each bus speed mode. Thus implement set_clock callback for sdhci-msm driver. Signed-off-by: Sahitya Tummala <stummala@codeaurora.org> Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: sdhci: Factor out sdhci_enable_clkRitesh Harjani2-11/+18
Factor out sdhci_enable_clk from sdhci_set_clock and make it EXPORT_SYMBOL so that it can be called. Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: sdhci-msm: Enable few quirksRitesh Harjani1-1/+3
sdhc-msm controller needs this SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN & SDHCI_QUIRK2_PRESET_VALUE_BROKEN to be set. Hence setting it. Signed-off-by: Sahitya Tummala <stummala@codeaurora.org> Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: sdhci-msm: Add get_min_clock() and get_max_clock() callbackRitesh Harjani1-0/+17
This add get_min_clock() and get_max_clock() callback for sdhci-msm. sdhci-msm min/max clocks may be different hence implement these callbacks. Signed-off-by: Sahitya Tummala <stummala@codeaurora.org> Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: sdhci-msm: Update DLL reset sequenceVenkat Gopalakrishnan1-0/+60
SDCC core with minor version >= 0x42 introduced new 14lpp DLL. This has additional requirements in the reset sequence for DLL tuning. Make necessary changes as needed. Without this patch we see below errors on such SDHC controllers sdhci_msm 7464900.sdhci: mmc0: DLL failed to LOCK mmc0: tuning execution failed: -110 Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org> Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29dt-bindings: sdhci-msm: Add xo valueRitesh Harjani1-0/+1
Add "xo" value which is tcxo clock to sdhci-msm DT binding properties. Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: sdhci-msm: Change poor style writel/readl of registersRitesh Harjani1-30/+32
This patch changes the poor style of writel/readl registers into more readable format. This avoid mixed style format of readl/writel in sdhci-msm driver. This patch also removes the one line comments which were present for above writel/readl, since they were of no help. Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29Documentation: synopsys-dw-mshc: remove the unused propertiesJaehoon Chung1-5/+0
"support-highspeed" was the obsoleted property. And "broken-cd" is not synopsys specific property. It can be referred to mmc.txt binding Documentation. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: dw_mmc: The "clock-freq-min-max" property was deprecatedJaehoon Chung2-1/+4
The "clock-freq-min-max" property was deprecated. There is "max-frequency" property in drivers/mmc/core/host.c "max-frequency" can be replaced with "clock-freq-min-max". Minimum clock value might be set to 100K by default. Then MMC core should try to find the correct value from 400K to 100K. So it just needs to set Maximum clock value. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: dw_mmc: remove the unnecessary mmc_data structureJaehoon Chung1-4/+2
Remove the unnecessary mmc_data structure. Instead, cmd->data can be used. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: dw_mmc: use the cookie's enum values for post/pre_req()Jaehoon Chung2-20/+25
This patch removed the meaningless value. Instead, use the cookie's enum values for executing correctly. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: dw_mmc: call the dw_mci_prep_stop_abort() by defaultJaehoon Chung1-10/+5
stop_cmdr should be set to values relevant to stop command. It migth be assigned to values whatever there is mrq->stop or not. Then it doesn't need to use dw_mci_prepare_command(). It's enough to use the prep_stop_abort for preparing stop command. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: dw_mmc: use the hold register when send stop commandJaehoon Chung1-0/+3
If DW_MMC_CARD_NO_USE_HOLD isn't set, it's usesd by default. Enve if SDMMC_CMD_USB_HOLD_REG is set in prepare_command(), but it doesn't set in pre_stop_abort(). To maintain the consistency, add the checking condition for this. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: dw_mmc: change the DW_MCI_FREQ_MIN from 400K to 100KJaehoon Chung1-1/+1
If there is no property "clock-freq-min-max", mmc->f_min should be set to 400K by default. But Some SoC can be used 100K. When 100K is used, MMC core will try to check from 400K to 100K. Reported-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: dw_mmc: fix the debug message for checking card's presentJaehoon Chung1-5/+2
If display the debug message, this message should be spamming. If flags is maintained the previous value, didn't display the debug message. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: dw_mmc: display the real register value on debugfsJaehoon Chung1-6/+8
Developer wants to see the real register value, not register offset. This patch fixed to display the real value of register. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: dw_mmc: fix spelling mistake in dev_dbg messageColin Ian King1-2/+2
Trivial fix to spelling mistake "desciptor" to "descriptor" in dev_dbg message. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: block: move packed command struct initLinus Walleij3-46/+43
By moving the mmc_packed_init() and mmc_packed_clean() into the only file in the kernel where they are used, we save two exported functions and can staticize those to the block.c file. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: block: rename data to blkdataLinus Walleij2-11/+12
The struct mmc_blk_request contains an opaque void *data that is actually only used to store a pointer to a per-request struct mmc_blk_data. This is confusing, so rename the member to blkdata and forward-declare the block.c local struct. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: block: use mmc_req_is_special()Linus Walleij1-3/+1
Instead of open coding the check for the same thing that the helper checks: use the helper. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: davinci: request gpios using gpio descriptorsahaslam@baylibre.com1-1/+12
Request card detect and write protect gpios using the provided API by mmc core. If a gpio is provided for card detect, we don't need to poll. So only use polling when a gpio is not provided. Once all pdata users register the gpios using gpio descriptors, we could remove the platform callbacks. Signed-off-by: Axel Haslam <ahaslam@baylibre.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Tested-by: David Lechner <david@lechnology.com>
2016-11-29mmc: davinci: use mmc_of_parse to parse common mmc configurationahaslam@baylibre.com1-64/+55
Card detect and write protect are currently not working on a DT boot, and the driver relies on polling to get the state of the card. The current code depends on platform data callbacks to register and get the state of the gpios. mmc core provides a generic way to parse device tree configuration, which will take care of registering the gpios for us, lets use it so that we don't need to poll, and parse the same properties. Signed-off-by: Axel Haslam <ahaslam@baylibre.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Tested-by: David Lechner <david@lechnology.com>
2016-11-29mmc: tmio: remove SDIO from TODO listWolfram Sang1-1/+0
We surely have SDIO support by now :) Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: tmio: fix wrong bitmask for SDIO irqsWolfram Sang1-1/+1
Commit 7729c7a232a953 ("mmc: tmio: Provide separate interrupt handlers") refactored the sdio irq handler and wrongly used the mask for SD irqs, not for SDIO irqs. This doesn't really matter in practice because both values keep the only interrupt we are interested in. But still, this is wrong and wants to be fixed. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: wbsd: implement check for dma mapping errorAlexey Khoroshilov1-4/+7
wbsd_request_dma() does not check for dma mapping errors. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: mmc_test: Uninitialized return valueDan Carpenter1-1/+1
We never set "ret" to RESULT_OK. Fixes: 9f9c4180f88d ("mmc: mmc_test: add test for non-blocking transfers") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: sdhci: remove unneeded (void *) casts in sdhci_(pltfm_)priv()Masahiro Yamada2-2/+2
The type of host->private is (unsigned long *). No cast is needed to return an opaque pointer. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: sdhci-iproc: support standard byte register accessesScott Branden1-2/+33
Add bytewise register accesses support for newer versions of IPROC SDHCI controllers. Previous sdhci-iproc versions of SDIO controllers (such as Raspberry Pi and Cygnus) only allowed for 32-bit register accesses. Signed-off-by: Srinath Mannam <srinath.mannam@broadcom.com> Signed-off-by: Scott Branden <scott.branden@broadcom.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: sdhci-iproc: Add brcm, sdhci-iproc compat string in bindings documentScott Branden1-0/+9
Adds brcm,sdhci-iproc compat string to DT bindings document for the iProc SDHCI driver. Signed-off-by: Anup Patel <anup.patel@broadcom.com> Signed-off-by: Scott Branden <scott.branden@broadcom.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: sh_mobile_sdhi: Add tuning supportSimon Horman1-1/+264
Add tuning support for use with SDR104 mode This includes adding support for the sampling clock controller (SCC). Based on work by Ai Kyuse. Cc: Ai Kyuse <ai.kyuse.uw@renesas.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: tmio: Add tuning supportAi Kyuse2-0/+76
Add tuning support for use with SDR104 mode Signed-off-by: Ai Kyuse <ai.kyuse.uw@renesas.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: tmio: Add hw reset supportAi Kyuse2-0/+10
Add hw reset support. Signed-off-by: Ai Kyuse <ai.kyuse.uw@renesas.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: tmio: document mandatory and optional callbacksSimon Horman1-1/+4
Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: tmio: enhance illegal sequence handlingAi Kyuse1-6/+9
An illegal sequence command error may occur if there is a stopbit or cmd_index error as well as a CRC error. The correct course of action is to re-enable IRQs An illegal sequence data error may occur if there is a CRC or stopbit error, or underrun. In this case set data->error correctly. This is in preparation for enabling tuning support which relies on differentiating between illegal sequence and other errors. Signed-off-by: Ai Kyuse <ai.kyuse.uw@renesas.com> [simon: broken out of a larger patch] Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: core: Add helper to see if a host can be retunedSimon Horman1-0/+5
This is in preparation for restoring saved tuning parameters when resuming the TMIO driver. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: sh_mobile_sdhi: Add r7s72100 supportChris Brandt2-0/+8
Add support for r7s72100 SoC. Signed-off-by: Chris Brandt <chris.brandt@renesas.com> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: tmio-mmc: add support for 32bit data portChris Brandt3-0/+47
For the r7s72100 SOC, the DATA_PORT register was changed to 32-bits wide. Therefore a new flag has been created that will allow 32-bit reads/writes to the DATA_PORT register instead of 16-bit (because 16-bits accesses are not supported). Signed-off-by: Chris Brandt <chris.brandt@renesas.com> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: sh_mobile_sdhi: add ocr_mask optionChris Brandt1-0/+2
In moving platforms from board files to DT, there still needs to be a way to set the ocr_mask setting for the tmio driver during probe. Without this setting, the probe will fail because the supported voltages are not known. This patch will also traditional platform registration platforms to migrate to DT. Signed-off-by: Chris Brandt <chris.brandt@renesas.com> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: core: use enum mmc_blk_status properlyLinus Walleij6-47/+74
There were several instances of code using the enum mmc_blk_status by arbitrarily converting it to an int and throwing it around to different functions. This makes the code hard to understand to may give rise to strange errors. Especially the function prototype mmc_start_req() had to be modified to take a pointer to an enum mmc_blk_status and the function pointer .err_check() inside struct mmc_async_req needed to return an enum mmc_blk_status. In every case: instead of assigning the block layer error code to an int, use the enum, also change the signature of all functions actually passing this enum to use the enum. To make it possible to use the enum everywhere applicable, move it to <linux/mmc/core.h> so that all code actually using it can also see it. An interesting case was encountered in the MMC test code which did not return a enum mmc_blk_status at all in the .err_check function supposed to check whether asynchronous requests worked or not: instead it returned a normal -ERROR or even the test frameworks internal error codes. The test code would also pass on enum mmc_blk_status codes as error codes inside the test code instead of converting them to the local RESULT_* codes. I have tried to fix all instances properly and run some tests on the result. Cc: Chunyan Zhang <zhang.chunyan@linaro.org> Cc: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: block: convert ecc_err to a boolLinus Walleij1-4/+4
The ecc_err flag is only assigned 0 or 1 and treated as a bool, so convert it to a bool. Cc: Chunyan Zhang <zhang.chunyan@linaro.org> Cc: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: block: make gen_err a bool variableLinus Walleij1-8/+9
This gen_err flag is only assigned 0 or 1 and treated as a bool, so convert it to a bool. Cc: Chunyan Zhang <zhang.chunyan@linaro.org> Cc: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-29mmc: sdhci: Use sdhci-caps-mask and sdhci-caps to change the caps read during __sdhci_read_capsZach Brown1-2/+22
The sdhci capabilities register can be incorrect. The sdhci-caps-mask and sdhci-caps dt properties specify which bits of the register are incorrect and what their values should be. This patch makes the sdhci driver use those properties to correct the caps during __sdhci_read_caps. During __sdhci_read_caps Use the sdhci-caps-mask property to turn off the incorrect bits of the sdhci register after reading them. Use the sdhci-caps to turn on bits after using sdhci-caps-mask to turn off the incorrect ones. Signed-off-by: Zach Brown <zach.brown@ni.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>