sdhci has support for using GPIOs for card detection.  If we have a
GPIO specified, we can use that directly, without needing our own
interrupt handler.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NChris Ball <chris@printf.net>

None of this code is currently used: there are no definitions of
struct sdhci_plat_data in arch/arm, neither are there any DT properties
which use card_power_gpio/power_active_high/power_always_enb.  In any
case, slot power control should be rigged up via vmmc and the regulator
subsystem in the DT case.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NChris Ball <chris@printf.net>

Use devm_ioremap_resource() to simplify iomem resource handling in the
probe path.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NChris Ball <chris@printf.net>

sdhci-spear is unsafe should a probe fail or defer, since it overwrites
the platform_data with its own driver-private data.  It's trivial to
fix as SDHCI allows for driver-private data to be appended to its own
structure - we just need to arrange the code to allow this.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NChris Ball <chris@printf.net>

Fix the error handling paths for DT and simplify using the devm_* API
for clk_get().
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NChris Ball <chris@printf.net>

pdata could be NULL if cd_gpio = -1. Dereference pdata only
if it is not NULL.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NChris Ball <chris@printf.net>

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d063
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Acked-by: NSonic Zhang <sonic.zhang@analog.com>
Acked-by: NSeungwon Jeon <tgih.jun@samsung.com>
Acked-by: NShawn Guo <shawn.guo@linaro.org>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Acked-by: NHaojian Zhuang <haojian.zhuang@gmail.com>
Acked-by: NJaehoon Chung <jh80.chung@samsung.com>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
Acked-by: NTony Prisk <linux@prisktech.co.nz>
Signed-off-by: NChris Ball <cjb@laptop.org>

Add CONFIG_PM_SLEEP to suspend/resume functions to fix the following
build warning when CONFIG_PM_SLEEP is not selected. This is because
sleep PM callbacks defined by SIMPLE_DEV_PM_OPS are only used when
the CONFIG_PM_SLEEP is enabled.

drivers/mmc/host/sdhci-spear.c:295:12: warning: 'sdhci_suspend' defined but not used [-Wunused-function]
drivers/mmc/host/sdhci-spear.c:308:12: warning: 'sdhci_resume' defined but not used [-Wunused-function]
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

Basically all drivers can have sdhci_ops struct const, but almost none do.
This patch constifies all sdhci_ops struct declarations where possible.

The patch was auto-generated with the following coccinelle semantic patch:

// <smpl>
@r1@
identifier ops;
identifier fld;
@@
ops.fld = ...;

@disable optional_qualifier@
identifier ops != r1.ops;
@@
static
+const
struct sdhci_ops ops = { ... };
// </smpl>
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Acked-by: NShawn Guo <shawn.guo@linaro.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

clk_{un}prepare is mandatory for platforms using common clock
framework. Because for SPEAr we don't do anything in clk_{un}prepare()
calls, just call them once in probe/remove.
Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

SPEAr sdhci driver expects the clock to be set to 50 MHz for proper
functioning.  This patch sets clk to 50 MHz in probe.
Signed-off-by: NVipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

CONFIG_HOTPLUG is going away as an option so __devexit is no
longer needed.
Signed-off-by: NBill Pemberton <wfp5p@virginia.edu>
Cc: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Chris Ball <cjb@laptop.org>
Cc: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Cc: Venkatraman S <svenkatr@ti.com>
Cc: Viresh Kumar <viresh.linux@gmail.com>
Cc: Ian Molton <ian@mnementh.co.uk>
Cc: Bruce Chang <brucechang@via.com.tw>
Cc: Harald Welte <HaraldWelte@viatech.com>
Cc: Pierre Ossman <pierre@ossman.eu>
Acked-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

CONFIG_HOTPLUG is going away as an option so __devinit is no longer
needed.
Signed-off-by: NBill Pemberton <wfp5p@virginia.edu>
Cc: Chris Ball <cjb@laptop.org>
Cc: Manuel Lauss <manuel.lauss@gmail.com>
Cc: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Cc: Venkatraman S <svenkatr@ti.com>
Cc: Ian Molton <ian@mnementh.co.uk>
Cc: Bruce Chang <brucechang@via.com.tw>
Cc: Harald Welte <HaraldWelte@viatech.com>
Cc: Pierre Ossman <pierre@ossman.eu>
Acked-by: NLudovic Desroches <ludovic.desroches@atmel.com>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
Acked-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer
needed.
Signed-off-by: NBill Pemberton <wfp5p@virginia.edu>
Cc: Chris Ball <cjb@laptop.org>
Cc: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Cc: Venkatraman S <svenkatr@ti.com>
Cc: Ian Molton <ian@mnementh.co.uk>
Cc: Bruce Chang <brucechang@via.com.tw>
Cc: Harald Welte <HaraldWelte@viatech.com>
Cc: Pierre Ossman <pierre@ossman.eu>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
Acked-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.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>

viresh.kumar@st.com email-id doesn't exist anymore as I have left the
company.  Replace ST's id with viresh.linux@gmail.com.

It also updates .mailmap file to fix address for 'git shortlog'
Signed-off-by: NViresh Kumar <viresh.linux@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

This patch replaces normal calls to resource allocation routines
with devm_*() derivative of those routines. This removes the need
to free those resources inside the driver.
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

pdev is guaranteed to be valid in probe. And so check for non-NULL is
not required. Remove it.
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Signed-off-by: NShiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

With the inclusion of following patch (59b5bc3929b37):
"mmc: sdhci: remove "state" argument from sdhci_suspend_host"

we get a compilation error for sdhci-spear:
drivers/mmc/host/sdhci-spear.c:283:2: error: too many arguments to function
‘sdhci_suspend_host’

This patch fixes this error.
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

This patch converts the drivers in drivers/mmc/host/* to use the
module_platform_driver() macro which makes the code smaller and a bit
simpler.
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Acked-by: N"Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Acked-by: NDavid Brown <davidb@codeaurora.org>
Acked-by: NViresh Kumar <viresh.kumar@st.com>
Acked-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: NSascha Hauer <s.hauer@pengutronix.de>
Acked-by: NWolfram Sang <w.sang@pengutronix.de>
Acked-by: NAnton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Suspend/Resume is missing from sdhci-spear driver. This patch adds
support for suspend/resume for this driver.
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

We are cleaning up the implicit presence of module.h; these guys are
some of the people who just assume it will be there.  Call it out
explitly for those that really need it.
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Currently if card_power_gpio is passed from platform data, it is acquired
and its value is either set or reset. After that we overwrite it with 1,
which is not required.

So, this patch removes the extra line which sets its value.
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Scripted with coccinelle.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Add a glue layer to support the sdhci driver on the ST SPEAr platform.
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Cc: <shiraz.hashim@st.com>
Cc: Linus Walleij <linus.ml.walleij@gmail.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>