Add a MSM8998-specific SDCC compatible, because using only a generic
qcom,sdhci-msm-v4 fallback is deprecated.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20220714091042.22287-2-krzysztof.kozlowski@linaro.orgSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Cards with 4k native sector size may only be read 4k-aligned,
accommodate for this in the single read recovery and use it.

Fixes: 81196976 (mmc: block: Add blk-mq support)
Signed-off-by: Christian Loehle <cloehle@hyperstone.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Link: https://lore.kernel.org/r/cf4f316274c5474586d0d99b17db4a4c@hyperstone.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Merge the mmc fixes for v5.19rc[n] into the next branch, to allow them to
get tested together with the new mmc changes that are targeted for v5.20.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Use mmc_card_sdio macro to simplify code.
Signed-off-by: Seunghui Lee <sh043.lee@samsung.com>
Link: https://lore.kernel.org/r/20220713033635.28432-3-sh043.lee@samsung.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Add mmc_card_sd_combo() macro for sd combo type card and use the mmc_card_*
macro to simplify code instead of comparing card->type.
Signed-off-by: Seunghui Lee <sh043.lee@samsung.com>
Link: https://lore.kernel.org/r/20220713033635.28432-2-sh043.lee@samsung.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

The entries in arrays must have fixed order, so the bindings and Linux
driver expecting various combinations of 'reg' addresses was never
actually conforming to guidelines.

The 'core' reg entry is valid only for SDCC v4 and lower, so disallow it
in SDCC v5.  SDCC v4 supports CQE and ICE, so allow them, even though
the qcom,sdhci-msm-v4 compatible is used also for earlier SoCs with SDCC
v2 or v3, so it is not entirely accurate.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20220712144245.17417-3-krzysztof.kozlowski@linaro.orgSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Bindings before conversion to DT schema expected reg-names without
"_mem" suffix.  This was used by older DTS files and by the MSM SDHCI
driver.
Reported-by: Douglas Anderson <dianders@chromium.org>
Fixes: edfbf8c307ff ("dt-bindings: mmc: sdhci-msm: Fix issues in yaml bindings")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20220712144245.17417-2-krzysztof.kozlowski@linaro.orgSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

We need runtime PM enabled early in probe before sdhci_setup_host() for
sdhci_omap_set_capabilities(). But on the first runtime resume we must
not call sdhci_runtime_resume_host() as sdhci_setup_host() has not been
called yet. Let's check for an initialized controller like we already do
for context restore to fix a lockdep warning.

Fixes: f433e8aa ("mmc: sdhci-omap: Implement PM runtime functions")
Reported-by: Yegor Yefremov <yegorslists@googlemail.com>
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20220622051215.34063-1-tony@atomide.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

This commit adds dt-binding documentation of mmc for MediaTek MT8188 SoC
platform.
Signed-off-by: Johnson Wang <johnson.wang@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220708114747.13878-1-johnson.wang@mediatek.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Commit "mmc: sdhci-msm: Reset GCC_SDCC_BCR register for SDHC" added
support for utilizing a hardware reset and parsing it from DT, however
the bindings were not updated along with it.

So, document the usage of "resets" property with the limit of only one
item.
Signed-off-by: Robert Marko <robimarko@gmail.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220704143554.1180927-1-robimarko@gmail.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

In set_uhs_signaling, the DDR bit is being set by fully writing the MC1R
register.
This can lead to accidental erase of certain bits in this register.
Avoid this by doing a read-modify-write operation.

Fixes: d0918764 ("mmc: sdhci-of-at91: fix MMC_DDR_52 timing selection")
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Tested-by: Karl Olsen <karl@micro-technic.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20220630090926.15061-1-eugen.hristev@microchip.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

SD_ROCR_S18A is already defined and is used to check the rocr value, so
let's replace with already defined values for readability.
Signed-off-by: ChanWoo Lee <cw9316.lee@samsung.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20220706004840.24812-1-cw9316.lee@samsung.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Convert the Samsung SoC SDHCI Controller bindings to DT schema.

The original bindings were quite old and incomplete, so add during
conversion typical (already used) properties like reg, clocks,
interrupts.

The bindings were not precising the clocks, although the upstream DTS
and Linux driver were expecting bus clocks in certain patterns in any
order.  Document the status quo even though it is not a proper approach
for bindings.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220626120342.38851-6-krzysztof.kozlowski@linaro.orgSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

If we reset because of an error, we need to preserve values for the
clock frequency. Otherwise, glitches may be seen on the bus.

To achieve that, we introduce a 'preserve' parameter to the reset
function and the IP core specific reset callbacks to handle everything
accordingly.
Reported-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20220625131722.1397-1-wsa@kernel.orgSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Use bitmap_equal() instead of hand writing it. It improves semantic and
avoids some explicit computation to convert a number of bits to a number of
bytes.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/b216df8798f765ab14bce65739c220643320f376.1656155715.git.christophe.jaillet@wanadoo.frSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

'erased_blocks_bitmap' is never freed. As it is allocated at the same time
as 'used_blocks_bitmap', it is likely that it should be freed also at the
same time.

Add the corresponding bitmap_free() in msb_data_clear().

Fixes: 0ab30494 ("memstick: add support for legacy memorysticks")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/b3b78926569445962ea5c3b6e9102418a9effb88.1656155715.git.christophe.jaillet@wanadoo.frSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Some functions of the bitmap API take advantage of the fact that a bitmap
is an array of long.

So, to make sure this assertion is correct, allocate bitmaps with
bitmap_zalloc() instead of kzalloc()+hand-computed number of bytes.

While at it, also use bitmap_free() instead of kfree() to keep the
semantic.

Fixes: 0ab30494 ("memstick: add support for legacy memorysticks")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/dbf633c48c24ae6d95f852557e8d8b3bbdef65fe.1656155715.git.christophe.jaillet@wanadoo.frSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Fix typo's,
* difference -> different
* alignment -> aligned

While at it updated the comment to make it clear that Renesas SDHI DMAC
needs buffers to be 128-byte aligned.
Reported-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20220624181438.4355-3-prabhakar.mahadev-lad.rj@bp.renesas.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

In case of devm_reset_control_get_optional_exclusive() failure we returned
directly instead of jumping to the error path to roll back initialization.

This patch moves devm_reset_control_get_optional_exclusive() early in the
probe so that we have the reset handle prior to initialization of the
hardware.

Fixes: b4d86f37 ("mmc: renesas_sdhi: do hard reset if possible")
Reported-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20220624181438.4355-2-prabhakar.mahadev-lad.rj@bp.renesas.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Callers of of_find_compatible_node() should drop the reference count
accordingly, so let's do that.
Signed-off-by: Liang He <windhl@126.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20220621065259.4079817-1-windhl@126.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

If CONFIG_PM is not set.

make ARCH=x86_64 CROSS_COMPILE=x86_64-linux-gnu-, will be failed, like this:

drivers/mmc/host/sdhci-pci-gli.c:834:13: error: ‘gl9763e_set_low_power_negotiation’ defined but not used [-Werror=unused-function]
 static void gl9763e_set_low_power_negotiation(struct sdhci_pci_slot *slot, bool enable)
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[3]: *** [drivers/mmc/host/sdhci-pci-gli.o] Error 1

To fix building warning, wrap all related code with CONFIG_PM.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Ren Zhijie <renzhijie2@huawei.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20220619104712.125364-1-renzhijie2@huawei.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

If 'no-mmc' is set but 'no-mmc-hs400' is not, this warning is raised.
Specifying 'no-mmc' should be enough though.
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Link: https://lore.kernel.org/r/20220614113905.1458715-1-alexander.stein@ew.tq-group.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Due to flaws in hardware design, GL9763E takes long time to exit from L1
state. The I/O performance will suffer severe impact if it often enter and
exit L1 state during I/O requests.

To improve I/O read/write performance and take battery life into account,
let's turn on GL9763E L1 negotiation before entering runtime suspend and
turn off GL9763E L1 negotiation while executing runtime resume. That is to
say, GL9763E will not enter L1 state when executing I/O requests and enter
L1 state when PCIe bus idle.
Signed-off-by: Renius Chen <reniuschengl@gmail.com>
Signed-off-by: Jason Lai <jason.lai@genesyslogic.com.tw>
Link: https://lore.kernel.org/r/20220613092907.2502-1-jason.lai@genesyslogic.com.tw
[Ulf: Improved the commit message a bit]
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

sdhci_pltfm_unregister() returns 0 unconditionally and returning an
error in a platform remove callback isn't very sensible. (The only
effect of the latter is that the device core emits a generic warning and
then removes the device anyhow.)

So return 0 unconditionally to make it obvious there is no error
forwarded to the upper layers.

This is a preparation for making platform remove callbacks return void.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20220610211257.102071-5-u.kleine-koenig@pengutronix.deSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

sdhci_pltfm_unregister() returns 0 unconditionally and returning an
error in a platform remove callback isn't very sensible. (The only
effect of the latter is that the device core emits a generic warning and
then removes the device anyhow.)

So return 0 unconditionally to make it obvious there is no error
forwarded to the upper layers.

This is a preparation for making platform remove callbacks return void.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20220610211257.102071-4-u.kleine-koenig@pengutronix.deSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

dw_mci_pltfm_remove() returns 0 unconditionally and returning an error
in a platform remove callback isn't very sensible. (The only effect of
the latter is that the device core emits a generic warning and then
removes the device anyhow.)

So return 0 unconditionally to make it obvious there is no error
forwarded to the upper layers.

This is a preparation for making platform remove callbacks return void.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20220610211257.102071-3-u.kleine-koenig@pengutronix.deSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

dw_mci_pltfm_remove() returns 0 unconditionally and returning an error
in a platform remove callback isn't very sensible. (The only effect of
the latter is that the device core emits a generic warning and then
removes the device anyhow.)

So return 0 unconditionally to make it obvious there is no error
forwarded to the upper layers.

This is a preparation for making platform remove callbacks return void.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20220610211257.102071-2-u.kleine-koenig@pengutronix.deSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

dw_mci_pltfm_remove() returns 0 unconditionally and returning an error
in a platform remove callback isn't very sensible. (The only effect of
the latter is that the device core emits a generic warning and then
removes the device anyhow.)

So return 0 unconditionally to make it obvious there is no error
forwarded to the upper layers.

This is a preparation for making platform remove callbacks return void.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20220610211257.102071-1-u.kleine-koenig@pengutronix.deSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Clang warns a few times along the lines of:

  drivers/mmc/host/sdhci-brcmstb.c:302:6: warning: variable 'base_clk' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
          if (res)
              ^~~
  drivers/mmc/host/sdhci-brcmstb.c:376:24: note: uninitialized use occurs here
          clk_disable_unprepare(base_clk);
                                ^~~~~~~~

base_clk is used in the error path before it is initialized. Initialize
it to NULL, as clk_disable_unprepare() calls clk_disable() and
clk_unprepare(), which both handle NULL pointers gracefully.

Link: https://github.com/ClangBuiltLinux/linux/issues/1650Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20220608152757.82529-1-nathan@kernel.orgSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Delete the redundant word 'is'.
Signed-off-by: Xiang wangx <wangxiang@cdjrlc.com>
Link: https://lore.kernel.org/r/20220608130847.46359-1-wangxiang@cdjrlc.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

The patch enabling generic Gen4 support forgot to add the clock
requirements which are the same as for Gen3. Update the binding.
Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20220608122344.3431-1-wsa+renesas@sang-engineering.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Despite the name, R-Car V3U is the first member of the R-Car Gen4
family.  Hence move its compatible value to the R-Car Gen4 section.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20220608094831.8242-1-wsa+renesas@sang-engineering.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

When using single_open() for opening, single_release() should be
used instead of seq_release(), otherwise there is a memory leak.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20220608090152.179395-1-weiyongjun1@huawei.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20220603233810.21972-1-wsa+renesas@sang-engineering.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

For now, Gen4 is treated the same as Gen3. But we still want a seperate
fallback just in case.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20220603233300.21789-1-wsa+renesas@sang-engineering.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Convert the mmc-spi-slot text based binding doc to yaml,
with the side effect of cleaning up some of the riscv
dtbs_check warnings.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220606201343.514391-2-mail@conchuod.ieSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Document the compatible for Samsung Exynos5420 SoC Synopsys Designware
MSHC with SMU, already used in DTS and driver.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220605163710.144210-5-krzysztof.kozlowski@linaro.orgSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Convert the Samsung Exynos SoC specific extensions to the Synopsys
Designware Mobile Storage Host Controller to DT schema.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220605163710.144210-4-krzysztof.kozlowski@linaro.orgSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Add changes to capture eMMC and SD card errors.
This is useful for debug and testing.
Signed-off-by: Liangliang Lu <quic_luliang@quicinc.com>
Signed-off-by: Sayali Lokhande <quic_sayalil@quicinc.com>
Signed-off-by: Bao D. Nguyen <quic_nguyenb@quicinc.com>
Signed-off-by: Ram Prakash Gupta <quic_rampraka@quicinc.com>
Signed-off-by: Shaik Sajida Bhanu <quic_c_sbhanu@quicinc.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/1653674036-21829-6-git-send-email-quic_c_sbhanu@quicinc.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Add debug fs entry error state to query eMMC and SD card errors statistics.
If any errors occurred in eMMC and SD card driver level then
err_state value will be set to 1.
Signed-off-by: Liangliang Lu <quic_luliang@quicinc.com>
Signed-off-by: Sayali Lokhande <quic_sayalil@quicinc.com>
Signed-off-by: Bao D. Nguyen <quic_nguyenb@quicinc.com>
Signed-off-by: Shaik Sajida Bhanu <quic_c_sbhanu@quicinc.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/1653674036-21829-5-git-send-email-quic_c_sbhanu@quicinc.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>