Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Add host capability MMC_CAP_CD_WAKE to enable irq wake on the card detect
irq.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

The MMC_CAP2_HC_ERASE_SZ is used only by a few mmc host drivers. Its intent
is to enable eMMC's high-capacity erase size, as to improve the behaviour
of the erase operations.

We should strive to avoid software configuration options that aren't
necessary, but instead deploy common behaviours. For these reasons, let's
remove the capability bit for MMC_CAP2_HC_ERASE_SZ and make it the default
behaviour.

Note that this change doesn't affect eMMCs supporting trim/discard, because
these commands operates on sectors and takes precedence over erase
commands.
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Reviewed-by: NShawn Lin <shawn.lin@rock-chips.com>
Tested-by: NShawn Lin <shawn.lin@rock-chips.com>

Some errors are flagged only with the next command after a multiblock
transfer, e.g. ECC error. So, when checking for data transfer errors,
we check the result from the stop command as well.
Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

To detect errors like ECC errors, we must parse the R1 response bits. Introduce
a helper function to also set the error value of a command when R1 error bits
are set. Add ECC error to list of flags checked. Use the new helper for the
stop command to call mmc_blk_recovery when detecting ECC errors which are only
flagged on the next command after multiblock.
Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: NYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

To make the code more consistent and to increase readability, add an
mmc_spi_send_csd() function, which gets called from mmc_send_csd() in case
of SPI mode.
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Reviewed-by: NShawn Lin <shawn.lin@rock-chips.com>

Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Reviewed-by: NShawn Lin <shawn.lin@rock-chips.com>

Instead of having the caller to check for SPI mode, let's leave that to
internals of mmc_send_cid(). In this way the code gets cleaner and it
becomes clear what is specific to SPI and non-SPI mode.
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Reviewed-by: NShawn Lin <shawn.lin@rock-chips.com>

The mmc_send_cid() is never called using non SPI mode. Thus, let's remove
the redundant code dealing with this.
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Reviewed-by: NShawn Lin <shawn.lin@rock-chips.com>

Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Reviewed-by: NShawn Lin <shawn.lin@rock-chips.com>

The mmc_flush_cache() is a eMMC specific function, let's move it to
mmc_ops.c to make that clear.
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Reviewed-by: NShawn Lin <shawn.lin@rock-chips.com>

The mmc_interrupt_hpi() is a eMMC specific function, let's move it to
mmc_ops.c to make that clear. The move also enables us to make
mmc_send_hpi_cmd() static, so let's do that change as well.
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Reviewed-by: NShawn Lin <shawn.lin@rock-chips.com>

The mmc_start_bkops(), mmc_stop_bkops() and mmc_read_bkops_status()
functions are all specific to eMMCs. To make this clear, let's move them
from from core.c to mmc_ops.c and take the opportunity to make
mmc_read_bkops_status() static.

While moving them, get rid of MMC_BKOPS_MAX_TIMEOUT (4 min) and use the
common default timeout MMC_OPS_TIMEOUT_MS (10 min) instead, as there is no
need to have specific default timeout for bkops.
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Reviewed-by: NShawn Lin <shawn.lin@rock-chips.com>

The mmc_start|stop_bkops(), mmc_read_bkops_status() and mmc_interrupt_hpi()
functions are all used from within the mmc core module, thus there are no
need to use EXPORT_SYMBOL() for them, so let's remove it.
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Reviewed-by: NShawn Lin <shawn.lin@rock-chips.com>

Document deprecation of "vmmc_aux" for io regulator and use of generic
mmc binding "vqmmc" in omap-hsmmc.
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

In preparation for using the generic mmc binding for io regulator
("vqmmc"), use mmc_regulator_get_supply() to get vmmc and vqmmc regulators.
Only if "vqmmc" regulator isn't found, fallback to use "vmmc_aux"
regulator.
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Do not initialize MMC regulators to NULL on error in omap_hsmmc driver
similar to what is done in mmc_regulator_get_supply(). This is in
preparation for using mmc_regulator_get_supply() to get MMC
regulators.
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

commit 94647a30 ("ARM: dts: omap3-overo: Enable WiFi/BT combo")
while enabling WiFi/BT combo added regulator to trigger the nReset
signal of the Bluetooth module in vqmmc-supply. However BT should be
handled by UART. Moreover "vqmmc" is not a defined binding for
omap_hsmmc. While "vqmmc" in mmc2 hasn't caused any issues so far,
mmc2 will start to mis-behave once omap_hsmmc defines "vqmmc"
binding.

Remove "vqmmc-supply" property in mmc2 here.
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Drivers core will runtime suspend a device with no driver. That means the
SDIO card will be runtime suspended as soon as it is added. It is then
runtime resumed to add each function. That is entirely pointless, so add
pm runtime get/put to keep the SDIO card runtime resumed until the function
devices have been added.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

The error path deletes the device by calling mmc_sdio_remove() which must
be called without the host claimed. Simplify the error path so it does just
that and add a comment about why we don't disable runtime PM.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Add PCI ids and enhanced strobe support for Intel CNP. This is combined
with GLK due to the pending CMDQ support which they both share.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Update copyrights to reflect work by Wolfram Sang and myself since last
year.
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
Reviewed-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Use EXPORT_SYMBOL_GPL rather than the non _GPL variant as there seems to be
no reason not to.
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
Reviewed-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Update files for tmio/sdhi MMC driver to reflect recent filename
changes.
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
Reviewed-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

The acpi-subsys already calls acpi_bus_get_status() and checks that
device->status.present is set before even registering the platform_device
so out probe function will never get called if device->status.present is
false and there is no need for this check.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

To achieve that, we set the registers in the generic HW reset routine
which gets called at both, init and resume. We also make sure to move
SDIO initialization before reset gets called in probe().
Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: NMasaharu Hayakawa <masaharu.hayakawa.ry@renesas.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

This patch applies customized PCI_DEVICE_ macros to specify the pci_ids
instead of open-coding them within the sdhci-pci driver.

By introducing device specific macros the pci_ids table becomes much
shorter and easier to comprehend than it would be possible using the
generic version of the PCI_DEVICE_ macros.
Signed-off-by: NMatthias Kraemer <matthiasmartinsson@gmail.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

The SDHCI_QUIRK_NO_MULTIBLOCK quirk was used as a workaround for the
ENGcm07207 erratum. However, it caused excruciatingly slow SD transfers
(300 kB/s on average), and this erratum actually does not imply that
multiple-block transfers are not supported, so this was overkill.

The suggested workaround for this erratum is to set SYSCTL.RSTA, but the
simple DAT line software reset (which resets the DMA circuit among
others) triggered by sdhci_finish_data() in case of errors seems to be
sufficient. Indeed, generating errors in a controlled manner on i.MX25
using the FEVT register right in the middle of read data transfers
without this quirk shows that nothing is written to the buffer by the
eSDHC past CMD12, and no extra Auto CMD12 is sent with AC12EN set, so
the data transfers on AHB are properly aborted. For write data
transfers, neither extra data nor extra Auto CMD12 is sent, as expected.
Moreover, after intensive stress tests on i.MX25, removing
SDHCI_QUIRK_NO_MULTIBLOCK seems to be safe.

SDHCI_QUIRK_BROKEN_ADMA has nothing to do with ENGcm07207, so set
ESDHC_FLAG_ERR004536 for the devices that had ESDHC_FLAG_ENGCM07207 set
in order to continue getting SDHCI_QUIRK_BROKEN_ADMA.
Signed-off-by: NBenoît Thébaudeau <benoit@wsystem.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Reviewed-by: NFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

On i.MX, SYSCTL.SDCLKFS may always be set to 0 in order to make the SD
clock frequency prescaler divide by 1 in SDR mode, even with the eSDHC.
The previous minimum prescaler value of 2 in SDR mode with the eSDHC was
a code remnant from PowerPC, which actually has this limitation on
earlier revisions.

In DDR mode, the prescaler can divide by up to 512.

The maximum SD clock frequency in High Speed mode is 50 MHz. On i.MX25,
this change makes it possible to get 48 MHz from the USB PLL
(240 MHz / 5 / 1) instead of only 40 MHz from the USB PLL
(240 MHz / 3 / 2) or 33.25 MHz from the AHB clock (133 MHz / 2 / 2).
Signed-off-by: NBenoît Thébaudeau <benoit@wsystem.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Reviewed-by: NFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

On i.MX25, the eSDHC DAT line software reset (SYSCTL.RSTD) unexpectedly
clears at least the data transfer width (PROCTL.DTW), which then results
in data CRC errors. This behavior is not documented, but it has actually
been observed. Consequently, the DAT line software resets triggered by
sdhci.c in case of errors caused unrecoverable errors.

Fix this by making sure that the DAT line software reset does not alter
the Host Control register. This behavior being undocumented, it may also
be present on other i.MX SoCs, so apply this fix for the whole i.MX
family.
Signed-off-by: NBenoît Thébaudeau <benoit@wsystem.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Reviewed-by: NFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

The eSDHC can only DMA from 32-bit-aligned addresses.

This fixes the following test cases of mmc_test:
  11:	Badly aligned write
  12:	Badly aligned read
  13:	Badly aligned multi-block write
  14:	Badly aligned multi-block read
Signed-off-by: NBenoît Thébaudeau <benoit@wsystem.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Reviewed-by: NFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Fix various English mistakes and typos in comments and in printed
strings.
Signed-off-by: NBenoît Thébaudeau <benoit@wsystem.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Reviewed-by: NFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

The dma gpd dma_free_coherent call size in invalid.

Fixes: 20848903 ("mmc: mediatek: Add Mediatek MMC driver")
Signed-off-by: NPhong LE <ple@baylibre.com>
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Null check at line 1165: if (mrq->cmd), implies that mrq->cmd might
be NULL.
Add null checks before dereferencing pointer mrq->cmd in order to avoid
any potential NULL pointer dereference.

Addresses-Coverity-ID: 1408740
Tested-by: NStefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: NGustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

It is 'R-Car', not 'RCar'. No code or binding changes, only descriptive text.
Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Using the device_property interfaces allows mmc drivers to work
on platforms which run on either device tree or ACPI.
Signed-off-by: NDavid Woods <dwoods@mellanox.com>
Reviewed-by: NChris Metcalf <cmetcalf@mellanox.com>
Cc: stable@vger.linux.org
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Using the device_property interfaces allows the dw_mmc driver to work
on platforms which run on either device tree or ACPI.
Signed-off-by: NDavid Woods <dwoods@mellanox.com>
Reviewed-by: NChris Metcalf <cmetcalf@mellanox.com>
Cc: stable@vger.linux.org
Acked-by: NJaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Add "rockchip,rk3328-dw-mshc", "rockchip,rk3288-dw-mshc" for
dwmmc on rk3328 platform.
Signed-off-by: NShawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

clk_prepare_enable() may fail, so we should better check its return value
and propagate it in the case of error.
Signed-off-by: NFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

drivers/mmc/core/block.c:1929:3-4: Unneeded semicolon

 Remove unneeded semicolon.

Generated by: scripts/coccinelle/misc/semicolon.cocci

CC: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>