This hook was solely used to set the DMA mask, which is now done
by the newly-added sdhci_set_dma_mask() function.

The use of a flag to ensure the mask is only set once is a strong hint
that it should not have been done there anyway.
Signed-off-by: NAlexandre Courbot <acourbot@nvidia.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Set the DMA mask in sdhci_add_host() after we determined the
capabilities of the device. 64-bit devices in particular are given the
proper mask that ensures bounce buffers are not used.

Also disable DMA if no proper DMA mask can be set, as the DMA-API
documentation specifies.
Signed-off-by: NAlexandre Courbot <acourbot@nvidia.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

If mmc_blk_ioctl returns -EINVAL, blkdev_ioctl continues to
work without returning err to user-space. But now we check
CAP_SYS_RAWIO firstly, so we return -EPERM to blkdev_ioctl,
which make blkdev_ioctl return -EPERM to user-space directly.
So this will break all the ioctl with BLKROSET. Now we find
Android-adb suffer it for the following log:

remount of /system failed;
couldn't make block device writable: Operation not permitted
openat(AT_FDCWD, "/dev/block/platform/ff420000.dwmmc/by-name/system", O_RDONLY) = 3
ioctl(3, BLKROSET, 0)  = -1 EPERM (Operation not permitted)

Fixes: a5f5774c ("mmc: block: Add new ioctl to send multi commands")
Cc: stable@vger.kernel.org
Signed-off-by: NShawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Using an at91sam9g20ek development board with DTS configuration may trigger
a kernel panic because of a NULL pointer dereference exception, while
configuring DMA. Let's fix this by adding a check for pdata before
dereferencing it.
Signed-off-by: NBrent Taylor <motobud@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

When initializing sdio card, we get struct mmc_card
from mmc_alloc_card which allocates it by kzalloc. So we
don't need another memset while reading cccr.
Signed-off-by: NShawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

When initializing sd or sdio card, we get struct mmc_card
from mmc_alloc_card which allocates it by kzalloc. So we don't
need another memset while decoding cid.
Signed-off-by: NShawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/of_mmc_spi.c: In function 'mmc_spi_get_pdata':
drivers/mmc/host/of_mmc_spi.c:77:6: warning: variable 'ret' set but not used [-Wunused-but-set-variable]
  int ret = -EINVAL;
      ^
Signed-off-by: NBrian Norris <computersforpeace@gmail.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

This patch adds Generic PHY access for sdhci-of-arasan. Driver
can get PHY handler from dt-binding, and power-on/init the PHY.
Currently, it's just mandatory for arasan,sdhci-5.1.
Signed-off-by: NShawn Lin <shawn.lin@rock-chips.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Currently, some err handling of sdhci_arasan_probe return directly
without calling sdhci_pltfm_free. This patch fixes them.
Signed-off-by: NShawn Lin <shawn.lin@rock-chips.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

We don't really need disable clk_ahb when failing to resume. Otherwise
we may take risk of bus error for accessing register without clk_ahb.
Signed-off-by: NShawn Lin <shawn.lin@rock-chips.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

This patch adds phys and phy-names for sdhci-of-arasan as required
properties for arasan,sdhci-5.1, and details the example as well.
Signed-off-by: NShawn Lin <shawn.lin@rock-chips.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Normally the timeout clock frequency is read from the capabilities
register.  It is also possible to set the value prior to calling
sdhci_add_host() in which case that value will override the
capabilities register value.  However that was being done after
calculating max_busy_timeout so that max_busy_timeout was being
calculated using the wrong value of timeout_clk.

Fix that by moving the override before max_busy_timeout is
calculated.

The result is that the max_busy_timeout and max_discard
increase for BSW devices so that, for example, the time for
mkfs.ext4 on a 64GB eMMC drops from about 1 minute 40 seconds
to about 20 seconds.

Note, in the future, the capabilities setting will be tidied up
and this override won't be used anymore.  However this fix is
needed for stable.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org # v3.18+
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

The header file asm/sizes.h is unnecessary, let's remove it.
This also allows to compile under X86 arch.
Signed-off-by: NWang Hongcheng <annie.wang@amd.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

This adds the HIDs for Qualcomm Technologies Inc SDHC
controllers:
QCOM8051: non-removable device that does not support 1.8v
QCOM8052: non-removable device that does support 1.8v
Signed-off-by: NPhilip Elcan <pelcan@codeaurora.org>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

The Tegra30+ SDMMC module has memcomp pads that are used to
automatically find and set the correct drive strength settings to
the sdmmc pads. The calibration needs to be manually kicked off
when the card signal voltage is changed, after the card clock is
supplied again.
Signed-off-by: NLucas Stach <dev@lynxeye.de>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
[Ulf: Rebased to fix a trivial compile error]
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

We've introduced a new helper in the MMC core:
mmc_regulator_set_vqmmc().  Let's use this in mtk-sd.  Using this new
helper has some advantages:

    1. We get the mmc_regulator_set_vqmmc() behavior of trying to match
       VQMMC and VMMC when the signal voltage is 3.3V.  This ensures max
       compatibility.

    2. We get rid of a few more warnings when probing unsupported
       voltages.

    3. We get rid of some non-mediatek specific code in mtk-sd.
Signed-off-by: NNicolas Boichat <drinkcat@chromium.org>
Reviewed-by: NDouglas Anderson <dianders@chromium.org>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

In commit ceae98f2 ("mmc: core: Try other signal levels
during power up") we can see that there are times when it's
valid to try several signal voltages.  Don't print an ugly
error in the logs when that happens.
Signed-off-by: NNicolas Boichat <drinkcat@chromium.org>
Reviewed-by: NDouglas Anderson <dianders@chromium.org>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Make use of ARCH_RENESAS in place of ARCH_SHMOBILE.

This is part of an ongoing process to migrate from ARCH_SHMOBILE to
ARCH_RENESAS the motivation for which being that RENESAS seems to be a more
appropriate name than SHMOBILE for the majority of Renesas ARM based SoCs.
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
Acked-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

The new code to do the clock rate setting externally to the SDMMC
module has a shortcut to not propagate changes with a 0 rate to
the CAR by simply bailing out. This breaks proper cutting of the
card clock. Fix it by directly calling the correct sdhci function.

Fixes: a8e326a9 "mmc: tegra: implement module external clock change"
Signed-off-by: NLucas Stach <dev@lynxeye.de>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

This patch fixes the MMC SPI driver from doing polling card detect when a
CD GPIO that supports interrupts is specified using the gpios DT property.

Without this patch the DT node below results in the following output:

 spi_gpio: spi-gpio { /* SD2 @ CN12 */
         compatible = "spi-gpio";
         #address-cells = <1>;
         #size-cells = <0>;
         gpio-sck = <&gpio6 16 GPIO_ACTIVE_HIGH>;
         gpio-mosi = <&gpio6 17 GPIO_ACTIVE_HIGH>;
         gpio-miso = <&gpio6 18 GPIO_ACTIVE_HIGH>;
         num-chipselects = <1>;
         cs-gpios = <&gpio6 21 GPIO_ACTIVE_LOW>;
         status = "okay";

         spi@0 {
                 compatible = "mmc-spi-slot";
                 reg = <0>;
                 voltage-ranges = <3200 3400>;
                 spi-max-frequency = <25000000>;
                 gpios = <&gpio6 22 GPIO_ACTIVE_LOW>;   /* CD */
         };
 };

 # dmesg | grep mmc
 mmc_spi spi32766.0: SD/MMC host mmc0, no WP, no poweroff, cd polling
 mmc0: host does not support reading read-only switch, assuming write-enable
 mmc0: new SDHC card on SPI
 mmcblk0: mmc0:0000 SU04G 3.69 GiB
 mmcblk0: p1

With this patch applied the "cd polling" portion above disappears.
Signed-off-by: NMagnus Damm <damm+renesas@opensource.se>
Cc: stable@vger.kernel.org # v3.18+
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

SD card support for Tegra114 started failing after commit a8e326a9
("mmc: tegra: implement module external clock change") was merged. This
commit was part of a series to enable UHS-I modes for Tegra. To
workaround this problem for now, disable UHS-I modes for Tegra114 by
separating the soc data structures for Tegra114 and Tegra124 so that
UHS-I is still enabled for Tegra124 but not Tegra114.

Fixes: a8e326a9 ("mmc: tegra: implement module external clock change")
Signed-off-by: NJon Hunter <jonathanh@nvidia.com>
Reviewed-by: NLucas Stach <dev@lynxeye.de>
Acked-by: NThierry Reding <treding@nvidia.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Now all clients migration to use sdhci_pltfm_init for private
allocation is done and there's no users of the priv variable, so we can
remove it from the sdhci_pltfm_host structure.
Signed-off-by: NJisheng Zhang <jszhang@marvell.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

The sdhci_pltfm_init() function has initialized the priv member as
NULL, so there's no need to do it again.
Signed-off-by: NJisheng Zhang <jszhang@marvell.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Commit 0e748234 ("mmc: sdhci: Add size for caller in init+register")
allows users of sdhci_pltfm to allocate private space in calls to
sdhci_pltfm_init+sdhci_pltfm_register. This patch migrates sdhci-tegra
to this allocation.
Signed-off-by: NJisheng Zhang <jszhang@marvell.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Tested-by: NThierry Reding <treding@nvidia.com>
Acked-by: NThierry Reding <treding@nvidia.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Commit 0e748234 ("mmc: sdhci: Add size for caller in init+register")
allows users of sdhci_pltfm to allocate private space in calls to
sdhci_pltfm_init+sdhci_pltfm_register. This patch migrates sdhci-st
to this allocation.
Signed-off-by: NJisheng Zhang <jszhang@marvell.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Commit 0e748234 ("mmc: sdhci: Add size for caller in init+register")
allows users of sdhci_pltfm to allocate private space in calls to
sdhci_pltfm_init+sdhci_pltfm_register. This patch migrates sdhci-pxav3
to this allocation.
Signed-off-by: NJisheng Zhang <jszhang@marvell.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Commit 0e748234 ("mmc: sdhci: Add size for caller in init+register")
allows users of sdhci_pltfm to allocate private space in calls to
sdhci_pltfm_init+sdhci_pltfm_register. This patch migrates the
sdhci-of-esdhc driver to this allocation.
Signed-off-by: NJisheng Zhang <jszhang@marvell.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Commit 0e748234 ("mmc: sdhci: Add size for caller in init+register")
allows users of sdhci_pltfm to allocate private space in calls to
sdhci_pltfm_init+sdhci_pltfm_register. This patch migrates the
sdhci-of-at91 driver to this allocation.
Signed-off-by: NJisheng Zhang <jszhang@marvell.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NLudovic Desroches <ludovic.desroches@atmel.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Commit 0e748234 ("mmc: sdhci: Add size for caller in init+register")
allows users of sdhci_pltfm to allocate private space in calls to
sdhci_pltfm_init+sdhci_pltfm_register. This patch migrates the
sdhci-of-arasan driver to this allocation.
Signed-off-by: NJisheng Zhang <jszhang@marvell.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

sdhci_pltfm_unregister() could operate host's registers, it will cause
problems if the clk is already disabled and unprepared. Fix this issue
by moving the clk_disable_unprepare() call to the end of remove
function.
Signed-off-by: NJisheng Zhang <jszhang@marvell.com>
Acked-by: NSören Brinkmann <soren.brinkmann@xilinx.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Commit 0e748234 ("mmc: sdhci: Add size for caller in init+register")
allows users of sdhci_pltfm to allocate private space in calls to
sdhci_pltfm_init+sdhci_pltfm_register. This patch migrates sdhci-msm
to this allocation.
Signed-off-by: NJisheng Zhang <jszhang@marvell.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

There's no need to allocate one sdhci_msm_pdata for each sdhci_msm_host.
This patch removes the sdhci_msm_pdata member from sdhci_msm_host and
uses one static global sdhci_msm_pdata for all sdhci msm hosts. It also
marks sdhci_msm_ops as const.
Signed-off-by: NJisheng Zhang <jszhang@marvell.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Commit 0e748234 ("mmc: sdhci: Add size for caller in init+register")
allows users of sdhci_pltfm to allocate private space in calls to
sdhci_pltfm_init+sdhci_pltfm_register. This patch migrates the sdhci
esdhc-imx driver to this allocation.
Signed-off-by: NJisheng Zhang <jszhang@marvell.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Commit 0e748234 ("mmc: sdhci: Add size for caller in init+register")
allows users of sdhci_pltfm to allocate private space in calls to
sdhci_pltfm_init+sdhci_pltfm_register. This patch migrates sdhci-bcm2835
to this allocation.
Signed-off-by: NJisheng Zhang <jszhang@marvell.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Acked-by: NEric Anholt <eric@anholt.net>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

use mmc core layer's API to support sd write protect
Signed-off-by: NChaotian Jing <chaotian.jing@mediatek.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Registers are 64bit apart, so we refactor bus_shift handling a little and set
it based on the DT compatible. Also, EXT_ACC is different. It has been tested
on a Salvator-X (Gen3) and, to check for regressions, on a Lager (Gen2).
Signed-off-by: NAi Kyuse <ai.kyuse.uw@renesas.com>
Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Further simplify the code in sdhci_prepare_data() - we don't set
SDHCI_REQ_USE_DMA anywhere else in the driver, so there is no
need to set it, and then immediately test it.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Tested-by: NGregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Rather than scanning the scatterlist multiple times for each quirk,
scan it once, checking for each possible quirk.  This should be
cheaper due to the length and offset members commonly sharing the
same cache line than scanning the scatterlist multiple times.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Tested-by: NGregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Prepare to consolidate the DMA address/size quirk handling into one
single loop.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Tested-by: NGregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

The patch "mmc: sdhci: plug DMA mapping leak on error" added
un-mapping logic to sdhci_tasklet_finish() where it is always
called, thereby preventing the mapping leaking.

Consequently the un-mapping code in sdhci_finish_data() is no
longer needed.  Remove it.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
[ Split from original "mmc: sdhci: plug DMA mapping leak on error" patch ]
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Tested-by: NGregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>