Add a driver for the SDIO/MMC host found on the Amlogic Meson SoCs. This
is an MMC controller which provides an interface between the application
processor and various memory cards. It supports the SD specification
v2.0 and the eMMC specification v4.41.

The controller provides an internal "mux" which allows connecting up to
three MMC devices to it. Only one device can be used at a time though
since the registers are shared across all devices. The driver takes care
of synchronizing access (similar to the dw_mmc driver).
The maximum supported bus-width is 4-bits.

Amlogic's GPL kernel sources call the corresponding driver "aml_sdio" to
differentiate it from the other MMC controller in (at least the Meson8
and Meson8b) the SoCs (they call the other drivers aml_sdhc and
aml_sdhc_m8, which seem to support a bus-width of up to 8-bits). This
means that there are three different MMC host controller IP blocks from
Amlogic (each of them with completely own register layout and features):
- "SDIO": 1 and 4 bit bus width, support for high-speed modes up to
  UHS-I SDR50, part of Meson6, Meson8 and Meson8b (the driver from this
  patch targets this controller)
- "SDHC": 1, 4 and 8 bit bus width, compatible with standard iNAND
  interface, support for speeds up to HS200 and MMC spec up to version
  4.5x, part of Meson8 and Meson8b SoCs (there is no mainline driver
  for this controller yet)
- "SDEMMC": 1, 4 and 8 bit bus width, support for speeds up to HS400
  and MMC spec up to version 5.0, part of the Meson GX (64-bit) SoCs
  (supported by the meson-gx MMC host driver)
Signed-off-by: NCarlo Caione <carlo@endlessm.com>
Signed-off-by: NMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Create a new sdhci-omap driver to configure the eMMC/SD/SDIO controller
in TI's OMAP SoCs making use of the SDHCI core library. For OMAP specific
configurations, populate sdhci_ops with OMAP specific callbacks and use
SDHCI quirks.
Enable only high speed mode for both SD and eMMC here and add other
UHS mode support later.
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>
Acked-by: NTony Lindgren <tony@atomide.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

It does not make sense for qcom dml code to be a seperate module, as
this has just 2 helper functions specific to qcom, and used directly by
mmci driver, so just compile this along with main mmci driver.

This would also fix issues arrising due to Kconfig combinations between
mmci and qcom dml.
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Add a new variant of the SDHI driver to support R-Car Gen3 with DMA via
on-chip bus mastering.  Since the DMAC is in a part of the SDHI module it
is not suitable to be used via DMA Engine.

Clearing of DM_CM_INFO1 after DMA thanks to Dirk Behme

Cc: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: NYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: NAi Kyuse <ai.kyuse.uw@renesas.com>
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>

Rename the source file SDHI. A follow-up patch will make it a library
file used by a different top-level module file.

The name "renesas" is chosen as the SDHI driver is applicable to a wider
range of SoCs than SH-Mobile it seems to be a more appropriate name.
However, the SDHI driver source itself, is left as sh_mobile_sdhi to
avoid unnecessary churn.

the name "core" was chosen to reflect the desired role of this file,
to provide core functionality to the sdhi driver. A follow-up patch will
move the file into that role.

Internal symbols have also been renamed to reflect the filename change.

The .name member of struct platform_driver and parameter to
MODULE_ALIAS() have not been changed in order to avoid the complication
of potentially breaking SH SoCs which still use platform drivers.
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Reviewed-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Rename the source file for DMA for SDHI as a follow-up to attaching
DMA code to the SDHI driver rather than the tmio_core driver.

The name "renesas" is chosen as the SDHI driver is applicable to a wider
range of SoCs than SH-Mobile it seems to be a more appropriate name.
However, the SDHI driver source itself, is left as sh_mobile_sdhi to
avoid unnecessary churn.

The name sys_dmac was chosen to reflect the type of DMA used.

Internal symbols have also been renamed to reflect the filename change.

A follow-up patch will re-organise the SDHI driver removing
the need for renesas_sdhi_get_dma_ops().
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Reviewed-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Rename tmio_mmc_pio.c to tmio_mmc_core.c to more accurately reflect its
function: to provide core code for the tmio-mmc and sh-mobole-sdhi drivers.
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Reviewed-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Refactor DMA support to allow it to be provided by a set of call-backs
that are provided by a host driver. The motivation is to allow multiple
DMA implementations to be provided and instantiated at run-time.

Instantiate the existing DMA implementation from the sh_mobile_sdhi driver
which appears to match the current use-case. This has the side effect
of moving the DMA code from the tmio_core to the sh_mobile_sdhi driver.

A follow-up patch will change the source file for the SDHI DMA
implementation accordingly. Another follow-up patch will re-organise the
SDHI driver removing the need for tmio_mmc_get_dma_ops().
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Reviewed-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Add platform driver for Octeon SOCs.
Signed-off-by: NSteven J. Hill <Steven.Hill@cavium.com>
Signed-off-by: NDavid Daney <david.daney@cavium.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Marvell Xenon eMMC/SD/SDIO Host Controller contains PHY.
Multiple types of PHYs are supported.

Add support to multiple types of PHYs init and configuration.
Add register definitions of PHYs.

Xenon PHY cannot fit in kernel common PHY framework.
Xenon SDHC PHY register is a part of Xenon SDHC register set.
Besides, MMC initialization has to call several PHY functions to
complete timing setting.
Those PHY setting functions have to access SDHC registers and know
current MMC setting, such as bus width, clock frequency and
speed mode.
As a result, implement Xenon PHY in MMC host directory.
Signed-off-by: NHu Ziji <huziji@marvell.com>
Signed-off-by: NGregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Add Xenon eMMC/SD/SDIO host controller core functionality.
Add Xenon specific initialization process.
Add Xenon specific mmc_host_ops APIs.
Add Xenon specific register definitions.

Add CONFIG_MMC_SDHCI_XENON support in drivers/mmc/host/Kconfig.

Marvell Xenon SDHC conforms to SD Physical Layer Specification
Version 3.01 and is designed according to the guidelines provided
in the SD Host Controller Standard Specification Version 3.00.
Signed-off-by: NHu Ziji <huziji@marvell.com>
Signed-off-by: NGregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Add a platform driver for ThunderX ARM SOCs.
Signed-off-by: NJan Glauber <jglauber@cavium.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

The 2835 has two SD controllers: The Arasan sdhci controller (supported
by the iproc driver) and a custom sdhost controller.  This patch adds a
driver for the latter.

The sdhci controller supports both sdcard and sdio.  The sdhost
controller supports the sdcard only, but has better performance.  Also
note that the rpi3 has sdio wifi, so driving the sdcard with the sdhost
controller allows to use the sdhci controller for wifi support.

The configuration is done by devicetree via pin muxing.  Both SD
controller are available on the same pins (2 pin groups = pin 22 to 27 +
pin 48 to 53).  So it's possible to use both SD controllers at the same
time with different pin groups.

The code was originally written by Phil Elwell in the downstream
Rasbperry Pi tree.   In preparation for the upstream merge it was
cleaned up and the code base was moderized by Eric Anholt, Stefan
Wahren and Gerd Hoffmann.
Signed-off-by: NEric Anholt <eric@anholt.net>
Signed-off-by: NStefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

This platform driver adds initial support for the DW host controller
found on ZTE SoCs.

It has been tested on ZX296718 EVB board currently. More support on
timing tuning will be added when hardware is available.
Signed-off-by: NJun Nie <jun.nie@linaro.org>
Signed-off-by: NJaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Add a driver for the Cadence SD4HC SD/SDIO/eMMC Controller.

For SD, it basically relies on the SDHCI standard code.
For eMMC, this driver provides some callbacks to support the
hardware part that is specific to this IP design.
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Initial support for the SD/eMMC controller in the Amlogic S905/GX*
family of SoCs.
Signed-off-by: NKevin Hilman <khilman@baylibre.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Add SDHCI driver for Broadcom BRCMSTB SoCs.
This driver works with all ARM based SoCs and the 7425, 7429
and 7435 MIPS based SoCs.

The driver disables all UHS speed modes by default and relies
on the Device Tree node properties to enable these modes for
SoC/Board combinations that support them.
Signed-off-by: NAl Cooper <alcooperx@gmail.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

The sdhci-bcm2835 is no more needed since it has been replaced
by sdhci-iproc.
Signed-off-by: NStefan Wahren <stefan.wahren@i2se.com>
Acked-by: NEric Anholt <eric@anholt.net>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

This driver supports the SDHCI host controller found on a PIC32.
Signed-off-by: NAndrei Pistirica <andrei.pistirica@microchip.com>
Signed-off-by: NJoshua Henderson <joshua.henderson@microchip.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>

sdhci-pci-o2micro.c contains no initialisation and its functions are only
called from shdci-pci.c, so there is no reason for it to be a separate
module, let alone or for it to always be built-in.

- Rename sdhci-pci.c to sdhci-pci-core.c so that the sdhci-pci module
  can be built from multiple source files
- Add sdhci-pci-o2micro.c to it
- Remove redundant exports
Signed-off-by: NBen Hutchings <ben@decadent.org.uk>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Introduce driver for he Atmel SDMMC available on sama5d2. It is a sdhci
compliant controller.
Signed-off-by: NLudovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Add Mediatek MMC driver code
Support eMMC/SD/SDIO
Signed-off-by: NChaotian Jing <chaotian.jing@mediatek.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

This driver is orphaned now that mach-msm has been removed.
Delete it.

Cc: Chris Ball <chris@printf.net>
Cc: David Brown <davidb@codeaurora.org>
Cc: Bryan Huntsman <bryanh@codeaurora.org>
Cc: Daniel Walker <dwalker@fifo99.com>
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>
Acked-by: NUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: NKumar Gala <galak@codeaurora.org>

Add IPROC SDHCI driver for IPROC family of Broadcom devices.
Acked-by: NRay Jui <rjui@broadcom.com>
Signed-off-by: NCorneliu Doban <cdoban@broadcom.com>
Signed-off-by: NScott Branden <sbranden@broadcom.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

This patch adds new host controller driver for
Fujitsu SDHCI controller f_sdh30.
Signed-off-by: NVincent Yang <Vincent.Yang@tw.fujitsu.com>
Signed-off-by: NAndy Green <andy.green@linaro.org>
Signed-off-by: NTetsuya Takinishi <t.takinishi@jp.fujitsu.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

This patch resurrects an old never-finished driver for Toshiba PCI SD
controllers found in some older Toshiba laptops (such as Portege R100):

02:0d.0 System peripheral [0880]: Toshiba America Info Systems SD TypA Controller [1179:0805] (rev 05)

The code is fixed, cleaned up and successfully tested with SD, SDHC, SDXC and
MMC cards on Portege R100. (MMC cards don't even work in Windows!)
SDIO probably does not work (don't have any SDIO card).

The hardware is slow (around 2 MB/s - same in Windows) because it does not
support bus mastering (busmaster enable bit cannot be set in PCI control reg).
Also the card clock is limited to 16MHz (33MHz PCI clock divided by 2).
Signed-off-by: NOndrej Zary <linux@rainbow-software.org>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

To support HS200 and UHS-1, we need add a big hunk of code,
as shown in the following patches. So a separate file for
rockchip SOCs is suitable.
Signed-off-by: NAddy Ke <addy.ke@rock-chips.com>
Acked-by: NJaehoon Chung <jh80.chung@samsung.com>
Tested-by: NDoug Anderson <dianders@chromium.org>
Reviewed-by: NDoug Anderson <dianders@chromium.org>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

On Qualcomm APQ8064 SOCs, SD card controller has an additional glue
called DML (Data Mover Local/Lite) to assist dma transfers.
This hardware needs to be setup before any dma transfer is requested.
DML itself is not a DMA engine, its just a gule between the SD card
controller and dma controller.

Most of this code has been ported from qualcomm's 3.4 kernel.

This patch adds the code necessary to intialize the hardware and setup
before doing any dma transfers.
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: NStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

This platform driver adds initial support for the SDHCI host controller
found on STMicroelectronics SoCs.

It has been tested on STiH41x b2020 platforms currently.
Signed-off-by: NGiuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: NPeter Griffin <peter.griffin@linaro.org>
Acked-by: NLee Jones <lee.jones@linaro.org>
Acked-by: NMaxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

The Allwinner sunxi mmc host uses dma in bus-master mode using a built-in
designware idmac controller, which is identical to the one found in the mmc-dw
hosts. However the rest of the host is not identical to mmc-dw, it deals with
sending stop commands in hardware which makes it significantly different
from the mmc-dw devices.
Signed-off-by: NDavid Lanzendörfer <david.lanzendoerfer@o2s.ch>
[hdegoede@redhat.com: various cleanups and fixes]
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Acked-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Acked-by: NChris Ball <chris@printf.net>
Signed-off-by: NMike Turquette <mturquette@linaro.org>

This patch adds a driver for the Renesas usdhi6rol0 SD/SDIO host controller
in both PIO and DMA modes.
Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Signed-off-by: NChris Ball <chris@printf.net>

The Allwinner sunxi mmc host uses dma in bus-master mode using a built-in
designware idmac controller, which is identical to the one found in the
mmc-dw hosts. However the rest of the host is not identical to mmc-dw, it
deals with sending stop commands in hardware which makes it significantly
different from the mmc-dw devices.
Signed-off-by: NDavid Lanzendörfer <david.lanzendoerfer@o2s.ch>
[hdegoede@redhat.com: various cleanups and fixes]
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Acked-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: NChris Ball <chris@printf.net>

Add SD/MMC driver for MOXA ART SoCs.

The "MOXA ART MMC controller" is likely a faraday "ftsdc010",
a controller with support in U-Boot:

http://git.denx.de/?p=u-boot.git;a=blob;f=drivers/mmc/ftsdc010_mci.cSigned-off-by: NJonas Jensen <jonas.jensen@gmail.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: NChris Ball <chris@printf.net>

Realtek USB SD/MMC host driver provides mmc host support based on the
Realtek USB card reader MFD driver.
Signed-off-by: NRoger Tseng <rogerable@realtek.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: NChris Ball <chris@printf.net>

Realtek USB SD/MMC host driver provides mmc host support based on the Realtek
USB card reader MFD driver.
Signed-off-by: NRoger Tseng <rogerable@realtek.com>
Acked-by: NUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

This platform driver adds the initial support of Secure Digital Host
Controller Interface compliant controller found in Qualcomm chipsets.
Signed-off-by: NAsutosh Das <asutoshd@codeaurora.org>
Signed-off-by: NVenkat Gopalakrishnan <venkatg@codeaurora.org>
Tested-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NGeorgi Djakov <gdjakov@mm-sol.com>
Acked-by: NUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: NChris Ball <chris@printf.net>

It turns now that the only really platform specific code that is needed for
SOCFPGA is using the SDMMC_CMD_USE_HOLD_REG in the prepare_command function.
Since the Rockchip already has this functionality, re-use the code that is
already in dw_mmc-pltfm.c.
Signed-off-by: NDinh Nguyen <dinguyen@altera.com>
Acked-by: NJaehoon Chung <jh80.chung@samsung.com>
Acked-by: NSteffen Trumtrar <s.trumtrar@pengutronix.de>
Tested-by: NSteffen Trumtrar <s.trumtrar@pengutronix.de>
Acked-by: NSeungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: NChris Ball <chris@printf.net>

Add a driver for Arasan's SDHCI controller core.
Signed-off-by: NSoren Brinkmann <soren.brinkmann@xilinx.com>
Acked-by: Rob Herring <rob.herring@calxeda.com> [binding]
Acked-by: NMichal Simek <monstr@monstr.eu>
Signed-off-by: NChris Ball <chris@printf.net>

Add dw_mmc-k3.c for k3v2, support sd/emmc
Signed-off-by: NZhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: NZhigang Wang <brooke.wangzhigang@huawei.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NChris Ball <chris@printf.net>

Add O2Micro/BayHubTech SD Host DeviceId 8520 support.
Add O2Micro/BayHubTech SD Host DeviceId 8420 & 8421 support.
Add O2Micro/BayHubTech SD Host DeviceId 8620 & 8621 support.

These card readers are used in laptops like Lenovo ThinkPad W540,
Dell Latitude E5440, Dell Latitude E6540.
Signed-off-by: NPeter Guo <peter.guo@bayhubtech.com>
Signed-off-by: NAdam Lee <adam.lee@canonical.com>
Signed-off-by: NChris Ball <chris@printf.net>