As host controller can support eMMC's HS200 mode at 1.8V or 1.2V,
these capability will be added.
Signed-off-by: NSeungwon Jeon <tgih.jun@samsung.com>
Tested-by: NAlim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Add function to support getting voltage from device-tree.
If voltage-range is specified in device-tree node, this function
will parse it and return the available voltage mask.
Signed-off-by: NHaijun Zhang <haijun.zhang@freescale.com>
Acked-by: NAnton Vorontsov <anton@enomsg.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

[ this is a follow-up to this discussion:
http://archive.arm.linux.org.uk/lurker/message/20130730.230827.a1ceb12a.en.html ]
This patchset renames all uses of "bcm," name bindings to
"brcm," as they were done prior to knowing that brcm had
already been standardized as Broadcom vendor prefix
(in Documentation/devicetree/bindings/vendor-prefixes.txt).
This will not cause any churn on devices because none of
these bindings have made it into production yet.
Also rename the the following dt binding docs that had "bcm,"
in their name for consistency:
 - bcm,kona-sdhci.txt -> kona-sdhci.txt
 - bcm,kona-timer.txt -> kona-timer.txt
Signed-off-by: NChristian Daudt <csd@broadcom.com>
Acked-by: NStephen Warren <swarren@nvidia.com>

Cortex-A9 SoCs from Rockchip use a slightly modified variant of dw_mmc
controllers that seems to require the SDMMC_CMD_USE_HOLD_REG bit to
always be set.

There also seem to be no other modifications (additional register etc)
present, so to keep the footprint low, add this small variant to the
pltfm driver.
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Acked-by: NSeungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

The DT-binding for MMC_CAP2_FULL_PWR_CYCLE, is used to indicate whether
it is possible to perform a full power cycle of the card.
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

As of now we rely on code outside of the driver to set the ciu clock
frequency.  There's no reason to do that.  Add support for setting up
the clock in the driver during probe.
Signed-off-by: NDoug Anderson <dianders@chromium.org>
Acked-by: NJaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

It is possible to specify a regulator that should be turned on when
dw_mmc is probed.  At the moment dw_mmc will fail to use the regulator
properly if the regulator probes after dw_mmc.  Fix this problem by
honoring EPROBE_DEFER.

At the same time move the regulator code out of the slot init code.
We only specify one regulator for the whole device and other parts of
the code (like suspend/resume) assume that the regulator has only been
enabled once.
Signed-off-by: NDoug Anderson <dianders@chromium.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

Add SDHCI bindings for the Broadcom 281xx SoCs.

Changes from V2:
 - Documentation cleanups

Changes from V1:
 - split original patch into 2, one for driver and this one for dt
Signed-off-by: NChristian Daudt <csd@broadcom.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>

Signed-off-by: NAnatol Pomozov <anatol.pomozov@gmail.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Adding devicetree support for imx21-mmc and imx31-mmc. Based on generic
gpio helper functions by Guennadi and generic DMA devicetree bindings.
Signed-off-by: NMarkus Pargmann <mpa@pengutronix.de>
Signed-off-by: NAnatolij Gustschin <agust@denx.de>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NChris Ball <cjb@laptop.org>

With the generic DMA device tree helper supported by mxs-dma driver,
client devices only need to call dma_request_slave_channel() for
requesting a DMA channel from dmaengine.

Since mxs is a DT only platform now, along with the changes, the non-DT
case checking in probe function also gets cleaned up.
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>
Cc: Chris Ball <cjb@laptop.org>
Cc: linux-mmc@vger.kernel.org
Reviewed-by: NArnd Bergmann <arnd@arndb.de>

Adds device tree support for davinci_mmc. Also add binding documentation.
As of now tested for non-dma PIO mode and without GPIO card_detect/
write_protect option because of dependencies on EDMA and GPIO module DT
support.
Signed-off-by: NManjunathappa, Prakash <prakash.pm@ti.com>
Reviewed-by: NMark Rutland <mark.rutland@arm.com>
Tested-by: NSekhar Nori <nsekhar@ti.com>
Cc: linux-mmc@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: davinci-linux-open-source@linux.davincidsp.com
Cc: devicetree-discuss@lists.ozlabs.org
Cc: cjb@laptop.org
Cc: Sekhar Nori <nsekhar@ti.com>
Cc: mporter@ti.com
Cc: Arnd Bergmann <arnd@arndb.de>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NChris Ball <cjb@laptop.org>
Signed-off-by: NSekhar Nori <nsekhar@ti.com>

This patch adds the new driver for CSR SiRF SoCs:

SiRFprimaII: unicore ARM Cortex-A9
SiRFatlas6: unicore ARM Cortex-A9
SiRFmarco: dual core ARM Cortex-A9 SMP
Signed-off-by: NBarry Song <Baohua.Song@csr.com>
Signed-off-by: NBin Shi <Bin.Shi@csr.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NChris Ball <cjb@laptop.org>

With device core now able to setup the default pin configuration,
the call to devm_pinctrl_get_select_default can be removed. And
the pin configuration code based on the deprecated Samsung specific
gpio bindings is also removed.
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

Many MMC capability flags are platform-dependent and are traditionally set
in platform data. With DT often each such capability requires a special
binding. Add bindings for MMC_CAP_SD_HIGHSPEED, MMC_CAP_MMC_HIGHSPEED,
MMC_CAP_POWER_OFF_CARD and MMC_CAP_SDIO_IRQ capabilities. Also add code to
DT parser to look up "keep-power-in-suspend" and "enable-sdio-wakeup"
bindings and set MMC_PM_KEEP_POWER and MMC_PM_WAKE_SDIO_IRQ respectively,
if found.
Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: NChris Ball <cjb@laptop.org>

Define device-tree bindings for the tmio-mmc driver to be able to specify
parameters, currently provided in platform data.
Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: NChris Ball <cjb@laptop.org>

Clarify ways to specify write-protect and card-detect MMC lines in FDT.
Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: NChris Ball <cjb@laptop.org>

None of mmc drivers implements bus-width as a required device tree
property.  Instead, some drivers like atmel-mci, dw_mmc, sdhci-s3c
implement it as an optional one, and will force bus width to be 1
when the property is absent.  Let's change the common binding to
reflect what the drivers are usually doing.
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

The file Documentation/devicetree/bindings/mmc/mmc.txt is common for all
MMC host drivers. Use a generic MMC host reference instead of an SDHCI
left-over.
Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: NChris Ball <cjb@laptop.org>

The "disable-wp" property is used to specify that a given SD card slot
doesn't have a concept of write protect.  This eliminates the need for
special case code for SD slots that should never be write protected
(like a micro SD slot or a dev board).

The dw_mmc driver is special in needing to specify "disable-wp"
because the lack of a "wp-gpios" property means to use the special
purpose write protect line.  On some other mmc devices the lack of
"wp-gpios" means that write protect should be disabled.
Signed-off-by: NDoug Anderson <dianders@chromium.org>
Acked-by: NSeungwon Jeon <tgih.jun@samsung.com>
Acked-by: NWill Newton <will.newton@imgtec.com>
Acked-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NChris Ball <cjb@laptop.org>

This patch adds a simple Device Tree binding for the mvsdio driver, as
well as the necessary documentation for it. Compatibility with non-DT
platforms is preserved, by keeping the platform_data based
initialization.

We introduce a small difference between non-DT and DT platforms: DT
platforms are required to provide a clocks = <...> property, which the
driver uses to get the frequency of the clock that goes to the SDIO
IP. The behaviour on non-DT platforms is kept unchanged: a clock
reference is not mandatory, but the clock frequency must be passed in
the "clock" field of the mvsdio_platform_data structure.
Signed-off-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: NAndrew Lunn <andrew@lunn.ch>
Tested-by: NStefan Peter <s.peter@mpl.ch>
Tested-by: NFlorian Fainelli <florian@openwrt.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>
Signed-off-by: NChris Ball <cjb@laptop.org>

Add a very simple driver for the BCM2835 SoC, which is used in the
Raspberry Pi board.
Signed-off-by: NStephen Warren <swarren@wwwdotorg.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

Fixed a typo in referenced file name.

Cc: Thomas Abraham <thomas.abraham@linaro.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NRob Herring <rob.herring@calxeda.com>

Correct spelling typos within Documentation/devicetree
Signed-off-by: NMasanari Iida <standby24x7@gmail.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

This patch adds a simple Device Tree binding for the mvsdio driver, as
well as the necessary documentation for it. Compatibility with non-DT
platforms is preserved, by keeping the platform_data based
initialization.

We introduce a small difference between non-DT and DT platforms: DT
platforms are required to provide a clocks = <...> property, which the
driver uses to get the frequency of the clock that goes to the SDIO
IP. The behaviour on non-DT platforms is kept unchanged: a clock
reference is not mandatory, but the clock frequency must be passed in
the "clock" field of the mvsdio_platform_data structure.
Signed-off-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: NAndrew Lunn <andrew@lunn.ch>
Tested-by: NStefan Peter <s.peter@mpl.ch>
Tested-by: NFlorian Fainelli <florian@openwrt.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>
Signed-off-by: NChris Ball <cjb@laptop.org>

Add a very simple driver for the BCM2835 SoC, which is used in the
Raspberry Pi board.
Signed-off-by: NStephen Warren <swarren@wwwdotorg.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

The OLPC XO-1.75 laptop includes a SDHCI controller which is 1.8v
capable, and it truthfully reports so in its capabilities. This
alternate voltage is used for driving new "UHS-I" SD cards at their
full speed.

However, what the controller doesn't know is that the motherboard
physically doesn't have a 1.8v supply available, so attempting to
switch to the 1.8v level will result in a situation that cannot be
recovered from without physically replugging the SD card.

Add a device tree flag that can be used on systems like these,
and hook it up to the equivalent SDHCI quirk.
Signed-off-by: NDaniel Drake <dsd@laptop.org>
Reviewed-by: NPhilip Rakity <prakity@nvidia.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

This patch adds support for pin configuration using pinctrl subsystem
to the sdhci-s3c driver.
Signed-off-by: NTomasz Figa <t.figa@samsung.com>
Acked-by: NThomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

HSMMC IP on AM33xx need a special setting to handle High-speed cards.
Other platforms like TI81xx, OMAP4 may need this as-well. This depends
on the HSMMC IP timing closure done for the high speed cards.

From AM335x TRM (SPRUH73F - 18.3.12 Output Signals Generation):

The MMC/SD/SDIO output signals can be driven on either falling edge or
rising edge depending on the SD_HCTL[2] HSPE bit. This feature allows
to reach better timing performance, and thus to increase data transfer
frequency.

There are few pre-requisites for enabling the HSPE bit
- Controller should support High-Speed-Enable Bit and
- Controller should not be using DDR Mode and
- Controller should advertise that it supports High Speed in
  capabilities register and
- MMC/SD clock coming out of controller > 25MHz
Signed-off-by: NHebbar, Gururaja <gururaja.hebbar@ti.com>
Signed-off-by: NVenkatraman S <svenkatr@ti.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Add documentation for pm capabilties such as MMC_PM_KEEP_POWER
and MMC_PM_WAKE_SDIO_IRQ.
Signed-off-by: NAbhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Fix typo in the synopsis dwmmc controller dt binding filename.
Signed-off-by: NAbhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

This patch adds support for the SD/MMC host controller found
on Wondermedia 8xxx series SoCs, currently supported under
arm/arch-vt8500.

A binding document is also included, based on mmc.txt with
additional properties.
Signed-off-by: NTony Prisk <linux@prisktech.co.nz>
Signed-off-by: NChris Ball <cjb@laptop.org>

clk_{un}prepare is mandatory for platforms using common clock framework.
Since this driver is used by SPEAr platform, which supports common clock
framework, add clk_{un}prepare() support for it.
Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

This adds simple DT bindings for SDHCI SPEAr controller. It uses cd-gpios
from common mmc bindings.

This also fixes spear300-evb.dts with correct name for card detect binding.
Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

Add device tree based discovery support for Samsung's sdhci controller.

Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Reviewed-by: NJaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

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: NThomas Abraham <thomas.abraham@linaro.org>
Acked-by: NWill Newton <will.newton@imgtec.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Add device tree based discovery support.
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Acked-by: NWill Newton <will.newton@imgtec.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Signed-off-by: NChris Ball <cjb@laptop.org>

This patch adds device tree support and binding documentation for
sdhci-dove.
Signed-off-by: NSebastian Hesselbarth <sebastian.hesselbarth@googlemail.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Signed-off-by: NLudovic Desroches <ludovic.desroches@atmel.com>
Acked-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: NChris Ball <cjb@laptop.org>