Commit graph

2480 commits

Author SHA1 Message Date
Philip Rakity
bad37e1ac6 mmc: sdhci: if MAX_CURRENT is 0, try getting current from regulator
The sd host controller spec indicates the the MAX_CURRENT value may
be returned as 0.  In this case other methods need to be used to
return the current.  If 0 is returned and there is a regulator,
ask the regulator for how much current is available.

Signed-off-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Mark F. Brown <mark.brown314@gmail.com>
Reviewed-by: Aaron Lu <aaron.lu@amd.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:22 -04:00
Guennadi Liakhovetski
e480606ad4 mmc: sh_mmcif: support generic card-detection
Extend the sh_mmcif driver to support GPIO card detection, provided by the
slot function module. The original .get_cd() platform callback is also
preserved for now.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:22 -04:00
Guennadi Liakhovetski
d9adcc1286 mmc: prohibit card detection when host is not ready
Currently mmc host drivers have to decide whether to enable card
detection before calling mmc_add_host() -- in which case a card
insertion event can arrive before the host has been completely
initialised -- or after mmc_add_host(), in which case the initial
card detection can be problematic.

This patch adds an explicit indication of when card detection should
not be carried out. With it in place enabling card detection before
calling mmc_add_host() should be safe. Similarly, disabling it again
after calling mmc_remove_host() will avoid any races.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:21 -04:00
Guennadi Liakhovetski
bf68a812f0 mmc: sh-mmcif: add OF support, make platform data optional
Add primitive OF support to the sh-mmcif driver, which also makes it
necessary to be able to run without platform data.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:21 -04:00
Guennadi Liakhovetski
c7bb4487a3 mmc: sdhi: add OF support, make platform data optional
Add primitive support for OF to the SDHI TMIO glue, which also makes it
necessary to be able to run without platform data.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:20 -04:00
Guennadi Liakhovetski
3071cafb7f mmc: tmio: use generic GPIO CD and WP handlers
The tmio-mmc driver is already using the generic GPIO CD handler in IRQ
mode. This patch adds support for CD polling mode and also checks for
availability of a WP GPIO.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:20 -04:00
Guennadi Liakhovetski
d7d8d500bc mmc: sh_mobile_sdhi: support caps2 flags
Let SDHI platforms specify mmc_host::caps2 flags in their platform data.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:19 -04:00
Guennadi Liakhovetski
02cb3221d5 mmc: tmio: support caps2 flags
Allow tmio mmc glue drivers to pass mmc_host::caps2 flags down to
the mmc layer.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:18 -04:00
Guennadi Liakhovetski
5aa7dad305 mmc: core: add WP pin handler to slot functions
Card Write-Protect pin is often implemented, using a GPIO, which makes
it simple to provide a generic handler for it.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:18 -04:00
Guennadi Liakhovetski
a7d1a1ebd8 mmc: core: convert slot functions to managed allocation
This prepares for the addition of further slot functions.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:17 -04:00
Guennadi Liakhovetski
befe4048d8 mmc: add CD GPIO polling support to slot functions
A simple extension of mmc slot functions add support for CD GPIO polling
for cases where the GPIO cannot produce interrupts, or where this is not
desired for some reason.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:17 -04:00
Guennadi Liakhovetski
27410ee7e3 mmc: core: use a more generic name for slot function types and fields
struct mmc_host::hotplug is becoming a generic hook for slot functions.
Rename it accordingly.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:16 -04:00
Guennadi Liakhovetski
7d17baa05d mmc: sh_mmcif: add regulator support
Add regulator support to the sh_mmcif driver, but also preserve the current
power-callback.

Also note, that the card power is not switched off during clock gating
periods, hence there's no need to power it on every time the card is
re-activated.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Reviwed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:15 -04:00
Guennadi Liakhovetski
e2ee996eaa mmc: sh_mmcif: remove redundant .down_pwr() callback
From the original version of sh_mmcif the .set_pwr() callback has only been
used to turn the card's power on, and the .down_pwr() callback has been
used to turn it off. .set_pwr() can be used for both these tasks, which is
also how it is implemented by the only user of this API: the SH7724 ecovec
board.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:14 -04:00
Guennadi Liakhovetski
a660926710 mmc: sh_mmcif: re-read the clock frequency every time it is turned on
With aggressive clock gating the clock can be disabled during interface
inactivity. During this time its frequency can be changed by another its
user. Therefore when the interface is activated again and the clock is
re-enabled, its frequency has to be re-read.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:14 -04:00
Guennadi Liakhovetski
b289174ff7 mmc: sh_mmcif: fix clock management
Regardless of whether the MMC bus clock is the same as the PM clock on
this specific interface, it has to be managed separately. Its proper
management should also include enabling and disabling of the clock,
whenever the interface is becoming active or going idle respectively.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:13 -04:00
Guennadi Liakhovetski
e1aae2eb3f mmc: sh_mmcif: simplify and use meaningful label names in error-handling
A check for NULL platform data can be conveniently made in the very
beginning of probing. Replace numbered error-handling labels in .probe()
with meaningful names to make any future reorganisation simpler.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:13 -04:00
Guennadi Liakhovetski
944640d0ff mmc: tmio: remove a duplicated comment line
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:12 -04:00
Guennadi Liakhovetski
71da63e767 mmc: sdhi: do not install dummy callbacks
Currently the SDHI glue for the TMIO MMC driver installs dummy .get_cd() and
.set_pwr() callbacks even if the platform didn't supply them. This is not
necessary, since the TMIO MMC driver itself checks for NULL callbacks. This
is also dubious if the platform provides a regulator for SD-card power
switching. It is better to only install those callbacks, if they are really
provided by the platform.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:11 -04:00
Guennadi Liakhovetski
b958a67c6b mmc: tmio: add regulator support
Currently the TMIO MMC driver derives the OCR mask from the platform data
and uses a platform callback to turn card power on and off. This patch adds
regulator support to the driver.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: Liam Girdwood <lrg@ti.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:11 -04:00
Guennadi Liakhovetski
56c4928793 mmc: sdhi: implement tmio-mmc clock enable-update and disable callbacks
Instead of delivering one static clock frequency value, read from the
hardware during probing, enable the tmio-mmc driver to re-read the
frequency dynamically.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:10 -04:00
Guennadi Liakhovetski
8c102a9646 mmc: tmio: add callbacks to enable-update and disable the interface clock
Every time the clock is enabled after possibly being disabled, we have
to re-read its frequency and update our configuration.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:10 -04:00
Guennadi Liakhovetski
e0337cc8b0 mmc: tmio: don't needlessly enable interrupts during probing
We don't have to force-enable MMC interrupts in our .probe() method,
mmc_add_host() will trigger card detection, that will enable all the
necessary interrupts.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:09 -04:00
Jonathan Kliegman
3bfe619dc3 mmc: dw_mmc: Fix null dma_ops access when use_dma is false
host->dma_ops is not valid if host->usa dma is 0 so protect
host->dma_ops reference in dw_mci_resume

Signed-off-by: Jonathan Kliegman <kliegs@chromium.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:09 -04:00
Guennadi Liakhovetski
e137788dd1 mmc: add a function to get regulators, supplying card's power
Add a function to get regulators, supplying card's Vdd and Vccq on a
specific host. If a Vdd supplying regulator is found, the function checks,
whether a valid OCR mask can be obtained from it. The Vccq regulator is
optional. A failure to get it is not fatal.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Reviwed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:08 -04:00
Laurent Pinchart
6de707f200 mmc: tmio: Don't access hardware registers after stopping clocks
The tmio_mmc_set_ios() function configures the MMC power, clock and bus
width. When the mmc core requests the driver to power off the card, we
inform runtime PM, that the controller can be suspended. This can lead
to the MSTP clock being turned off.

Writing to any 16-bit hardware registers with the MSTP clock off leads
to timeouts and errors being printed to the kernel log. This can occur
both when stopping the MMC clock and when configuring the bus width.

To fix this, stop the MMC clock before calling put_runtime_pm(), and
skip bus width configuration when power is off.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Simon Horman <horms@verge.net.au>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:07 -04:00
Laurent Pinchart
7541ca9847 mmc: sh_mmcif: Support MMC_SLEEP_AWAKE command
The MMC_SLEEP_AWAKE and SD_IO_SEND_OP_COND commands share the same
opcode. SD_IO_SEND_OP_COND isn't supported by the SH MMCIF, but
MMC_SLEEP_AWAKE is. Discriminate between the two commands using the
command flags, and reject SD_IO_SEND_OP_COND only.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:07 -04:00
Girish K S
94c6cee91b mmc: dw_mmc: Add check for IDMAC configuration
In the current dwmmc driver there is support for selecting IDMAC from
the menu config option. If the support for IDMAC is enabled in the menu
config and the hardware configuration register's DMA_INTERFACE field is
0, the driver will still try to do the DMA initialization.

The dw_mci_idmac_init function currently implemented returns only success
indicating that the DMA initialization is always successful. This patch
adds a check for existence of the DMA IP to allow the DMA initialization.

Signed-off-by: Girish K S <girish.shivananjappa@linaro.org>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:06 -04:00
Chris Ball
b650352dd3 mmc: sdhci-pxa: Add device tree support
Tested on an OLPC XO-1.75.  (MMP2, sdhci-pxav3, CONFIG_MACH_MMP2_DT=y)

Signed-off-by: Chris Ball <cjb@laptop.org>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-07-21 00:01:47 -04:00
Guennadi Liakhovetski
0e79f9ae16 mmc: sh_mmcif: switch to the new DMA channel allocation and configuration
Using the "private" field from struct dma_chan is deprecated. The sh
dmaengine driver now also supports the preferred DMA channel allocation
and configuration method, using a standard filter function and a channel
configuration operation. This patch updates sh_mmcif to use this new
method.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: Chris Ball <cjb@laptop.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-07-20 11:28:54 +05:30
Alan Cox
adc8d746ca tty: move the termios object into the tty
This will let us sort out a whole pile of tty related races. The
alternative would be to keep points and refcount the termios objects.
However
1. They are tiny anyway
2. Many devices don't use the stored copies
3. We can remove a pty special case

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16 13:00:41 -07:00
Guennadi Liakhovetski
c471270d7a mmc: sh_mobile_sdhi: prepare for conversion to the shdma base library
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: Chris Ball <cjb@laptop.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-07-13 09:13:07 +05:30
Guennadi Liakhovetski
916001fe33 mmc: sh_mmcif: remove unneeded struct sh_mmcif_dma, prepare to shdma conversion
Now that all users have been updated to use the embedded in struct
sh_mmcif_plat_data DMA slave IDs, struct sh_mmcif_dma is no longer needed
and can be removed. This also makes preparation to the shdma base library
conversion easier.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: Chris Ball <cjb@laptop.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-07-13 09:13:07 +05:30
Chris Ball
45a6b32e24 mmc: core: Export regulator_* functions as GPL
The regulator API functions we're wrapping are exported as GPL, so our
wrappers for the same functions should be too.

Reported-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:04:06 -04:00
Subhash Jadavani
ecf8b5d0a3 mmc: block: replace __blk_end_request() with blk_end_request()
For completing any block request, MMC block driver is calling:
	spin_lock_irq(queue)
	__blk_end_request()
	spin_unlock_irq(queue)

But if we analyze the sources of latency in kernel using ftrace,
__blk_end_request() function at times may take up to 6.5ms with
spinlock held and irq disabled.

__blk_end_request() calls couple of functions and ftrace output
shows that blk_update_bidi_request() function is almost taking 6ms.
There are 2 function to end the current request: ___blk_end_request()
and blk_end_request(). Both these functions do same thing except
that blk_end_request() function doesn't take up the spinlock
while calling the blk_update_bidi_request().

This patch replaces all __blk_end_request() calls with
blk_end_request() and __blk_end_request_all() calls with
blk_end_request_all().

Testing done: 20 process concurrent read/write on sd card
and eMMC. Ran this test for almost a day on multicore system
and no errors observed.

This change is not meant for improving MMC throughput; it's basically
about becoming fair to other threads/interrupts in the system. By
holding spin lock and interrupts disabled for longer duration, we
won't allow other threads/interrupts to run at all.  Actually slight
performance degradation at file system level can be expected as we
are not holding the spin lock during blk_update_bidi_request() which
means our mmcqd thread may get preempted for other high priority
thread or any interrupt in the system.

These are performance numbers (100MB file write) with eMMC running
in DDR mode:

Without this patch:
	Name of the Test   Value   Unit
	LMDD Read Test     53.79   MBPS
	LMDD Write Test    18.86   MBPS
	IOZONE  Read Test  51.65   MBPS
	IOZONE  Write Test 24.36   MBPS

With this patch:
	Name of the Test    Value  Unit
	LMDD Read Test      52.94  MBPS
	LMDD Write Test     16.70  MBPS
	IOZONE  Read Test   52.08  MBPS
	IOZONE  Write Test  23.29  MBPS

Read numbers are fine. Write numbers are bit down (especially LMDD
write), may be because write requests normally have large transfer
size and which means there are chances that while mmcq is executing
blk_update_bidi_request(), it may get interrupted by interrupts or
other high priority thread.

Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:04:05 -04:00
Venkatraman S
6af9e96e05 mmc: core: Fix the HPI execution sequence
mmc_execute_hpi should send the HPI command only once, and only
if the card is in PRG state.

According to eMMC spec, the command's completion time is
not dependent on OUT_OF_INTERRUPT_TIME. Only the transition
out of PRG STATE is guarded by OUT_OF_INTERRUPT_TIME - which
is defined to begin at the end of sending the command itself.

Specify the default timeout for the actual sending of HPI
command, and then use OUT_OF_INTERRUPT_TIME to wait for
the transition out of PRG state.

Reported-by: Alex Lemberg <Alex.Lemberg@sandisk.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:04:04 -04:00
Guennadi Liakhovetski
fd0ea65d3e mmc: extend and rename cd-gpio helpers to handle more slot GPIO functions
GPIOs can be used in MMC/SD-card slots not only for hotplug detection, but
also to implement the write-protection pin. Rename cd-gpio helpers to
slot-gpio to make addition of further slot GPIO functions possible.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:04:04 -04:00
Guennadi Liakhovetski
0f506a9669 mmc: tmio: use MMC opcode defines instead of numbers
mmc.h defines macros for most frequently used MMC opcodes. Use them instead
of hard-coded numbers.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:04:03 -04:00
Guennadi Liakhovetski
623b51fc86 mmc: cd-gpio: pass IRQF_ONESHOT to request_threaded_irq()
Fix a boot regression on Mackerel boards with sh_mobile_sdhi
in existing kernels causing:

genirq: Threaded irq requested with handler=NULL and !ONESHOT for irq XXX

caused by 1c6c6952 (genirq: Reject bogus threaded irq requests).

This is backported from Guennadi's patch:
"mmc: extend and rename cd-gpio helpers to handle more slot GPIO functions"

Reported-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:03:57 -04:00
Venkatraman S
87f761b6c0 mmc: core: Revert "skip card initialization if power class selection fails"
This reverts commit 3d93576e(skip card initialization if
power class selection fails).
Problem has been reported when this is used with eMMC4.41
card with Tegra Platform. Till the issue is root caused,
bus width selection failure should not be treated as fatal.

Reported-by: Marc Dietrich <marvin24@gmx.de>
Signed-Off-by: Venkatraman S <svenkatr@ti.com>
CC: Ulf Hansson <ulf.hansson@stericsson.com>
CC: Subhash Jadavani <subhashj@codeaurora.org>
CC: Saugata Das <saugata.das@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 22:47:13 -04:00
Arnd Bergmann
524cd267e5 Merge branch 'for-3.6/common-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/clk
From Stephen Warren <swarren@wwwdotorg.org>:

This branch contains numerous changes required as a baseline in order to
convert Tegra to the common clock framework. The intention was to also
include patches to actually convert Tegra to the common clock framework.
However, those patches appeared late in the kernel cycle and currently
cause regressions on some boards, so were dropped for now.

* 'for-3.6/common-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
  ARM: tegra: Provide clock for only one PWM controller
  ARM: tegra: Fix PWM clock programming
  ARM: tegra: dma: rename driver name for clock to "tegra-apbdma"
  ARM: tegra: Remove second instance of uart clk
  crypto: add clk_prepare/clk_unprepare
  ASoC: tegra: add clk_prepare/clk_unprepare
  staging: nvec: add clk_prepare/clk_unprepare
  spi/tegra: add clk_prepare/clk_unprepare
  Input: tegra-kbc - add clk_prepare/clk_unprepare
  USB: ehci-tegra: add clk_prepare/clk_unprepare
  mmc: tegra: add clk_prepare/clk_unprepare
  i2c: tegra: Add clk_prepare/clk_unprepare
  ARM: tegra: add clk_prepare/clk_unprepare

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-06 22:21:23 +02:00
Arnd Bergmann
ebaaa25de8 Merge branch 'tegra/cleanup' into next/clk
Dependency for tegra/common-clk branch

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-06 22:20:40 +02:00
Arnd Bergmann
8e31cbc66b Merge branch 'for-3.6/cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/cleanup
From Stephen Warren <swarren@wwwdotorg.org>:

This branch contains various minor cleanups, such as binding and .dts
renames, DT content cleanup, SDHCI support-8bit property usage cleanup, and
removal of some unnecessary sleep code.

* 'for-3.6/cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
  ARM: dt: tegra: rename board files to match SoC
  ASoC: tegra: simplify Kconfig dependencies
  ARM: dt: tegra: remove legacy support-8bit property
  mmc: tegra: use bus-width property instead of support-8bit
  ARM: tegra: Remove flow controller programming
  dt: name all Tegra binding docs consistently
  ARM: tegra20: Rename "emc" to "memory-controller"
  ARM: dt: tegra20: Rename "emc" to "memory-controller"
  ARM: tegra{20,30}: Rename "mc" to "memory-controller"
  ARM: dt: tegra{20,30}.dtsi: Rename "mc" to "memory-controller"
  amba: tegra-ahb: Remove empty *_remove()

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-06 22:09:21 +02:00
Ming Lei
fe85227347 Revert "mmc: omap_hsmmc: Enable Auto CMD12"
This patch reverts the commit dba3c29ea4.

After bisecting, this commit dba3c29 is found to ruin micro-SD card data
(writing incorrect file, or fs is corrupt after several times mount)
on the beagle-xm revB, and reverting the commit will fix the problem.

Also from TRM of OMAP3/OMAP4/DM37x, the below is mentioned about
the Auto CMD12 Enable bit.
        - SDIO does not support this feature.
        - SD card only.
Looks it is not suitable to always enable Auto CMD12 in host controller
driver.

Considered that the commit is not mature enough, so ask to revert it
first.

Cc: Balaji T K <balajitk@ti.com>
Cc: Venkatraman S <svenkatr@ti.com>
Buglink: https://lkml.org/lkml/2012/6/10/225
Reported-by: Paolo Pisati <p.pisati@gmail.com>
Reported-bisected-and-tested-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Acked-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-26 16:10:30 -04:00
Subhash Jadavani
d380443cd0 mmc: block: fix the data timeout issue with ACMD22
If multi block write operation fails for SD card, during
error handling we send the SD_APP_SEND_NUM_WR_BLKS (ACMD22)
to know how many blocks were already programmed by card.

But mmc_sd_num_wr_blocks() function which sends the ACMD22
calculates the data timeout value from csd.tacc_ns and
csd.tacc_clks parameters which will be 0 for block addressed
(>2GB cards) SD card. This would result in timeout_ns and
timeout_clks being 0 in the mmc_request passed to host driver.
This means host controller would program its data timeout timer
value with 0 which could result in DATA TIMEOUT errors from
controller.

To fix this issue, mmc_sd_num_wr_blocks() should instead
just call the mmc_set_data_timeout() to calculate the
data timeout value. mmc_set_data_timeout() function
ensures that non zero timeout value is set even for
block addressed SD cards.

Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Reviewed-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-26 16:10:29 -04:00
Linus Torvalds
a2a2609c97 Merge branch 'akpm' (Andrew's patch-bomb)
* emailed from Andrew Morton <akpm@linux-foundation.org>: (21 patches)
  mm/memblock: fix overlapping allocation when doubling reserved array
  c/r: prctl: Move PR_GET_TID_ADDRESS to a proper place
  pidns: find_new_reaper() can no longer switch to init_pid_ns.child_reaper
  pidns: guarantee that the pidns init will be the last pidns process reaped
  fault-inject: avoid call to random32() if fault injection is disabled
  Viresh has moved
  get_maintainer: Fix --help warning
  mm/memory.c: fix kernel-doc warnings
  mm: fix kernel-doc warnings
  mm: correctly synchronize rss-counters at exit/exec
  mm, thp: print useful information when mmap_sem is unlocked in zap_pmd_range
  h8300: use the declarations provided by <asm/sections.h>
  h8300: fix use of extinct _sbss and _ebss
  xtensa: use the declarations provided by <asm/sections.h>
  xtensa: use "test -e" instead of bashism "test -a"
  xtensa: replace xtensa-specific _f{data,text} by _s{data,text}
  memcg: fix use_hierarchy css_is_ancestor oops regression
  mm, oom: fix and cleanup oom score calculations
  nilfs2: ensure proper cache clearing for gc-inodes
  thp: avoid atomic64_read in pmd_read_atomic for 32bit PAE
  ...
2012-06-20 14:41:57 -07:00
Viresh Kumar
10d8935f46 Viresh has moved
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: Viresh Kumar <viresh.linux@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-06-20 14:39:36 -07:00
Linus Torvalds
a4d7a12238 Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM fixes from Russell King:
 "This includes three MMCI changes - one to fix up the wrong version of
  the DT support patch which was merged, and two to make deferred
  probing work.  It also includes a fix to the OMAP SPI driver which is
  causing a boot time warning.

  The remainder are very minor ARM fixes."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  SPI: fix over-eager devm_xxx() conversion
  ARM: 7427/1: mmc: mmci: Defer probe() in case of yet uninitialized GPIOs
  ARM: 7426/1: mmc: mmci: Remove wrong error handling of gpio 0
  ARM: 7425/1: extable: ensure fixup entries are 4-byte aligned
  ARM: 7421/1: bpf_jit: BPF_S_ANC_ALU_XOR_X support
  ARM: 7423/1: kprobes: run t32_simulate_ldr_literal() without insn slot
  ARM: 7422/1: mmc: mmci: Allocate platform memory during Device Tree boot
2012-06-20 09:42:09 -07:00
Roland Stigge
2805b9ab7c ARM: 7427/1: mmc: mmci: Defer probe() in case of yet uninitialized GPIOs
If the GPIOs used by the MMCI driver are not registered yet when the driver is
probe()d, they can't be used. This happens if the mmci driver is probed before
the respective GPIO controller (e.g. on the LPC32xx EA3250 board, the PCA9532
GPIO controller would be initialized via DT after mmci). Therefore, we defer
mmci in this case.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-06-17 22:24:36 +01:00
Roland Stigge
f433809817 ARM: 7426/1: mmc: mmci: Remove wrong error handling of gpio 0
Zero is a valid GPIO and shouldn't be handled as an error return code from
of_get_named_gpio(). It was a leftover from old code before getting
pdata->gpio_*() was modified.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-06-17 22:24:32 +01:00
Lee Jones
b9b52918ab ARM: 7422/1: mmc: mmci: Allocate platform memory during Device Tree boot
When booting with Device Tree enabled, platform specific information
is gathered by parsing the DT binary. Platform data is subsequently
populated with the result. The memory required for this is not
automatically allocated during Device Tree boot, so we'll do it here
instead.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-06-14 15:11:05 +01:00
Prashant Gaikwad
1e674bc668 mmc: tegra: add clk_prepare/clk_unprepare
Use clk_prepare/clk_unprepare as required by the generic clk framework.

Cc: cjb@laptop.org
Cc: linux-mmc@vger.kernel.org
Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-06-11 11:55:36 -06:00
Stephen Warren
c11bd55790 mmc: tegra: use bus-width property instead of support-8bit
Update the driver to parse the new unified bus-width property introduced
in commit 7f21779 "mmc: dt: Consolidate DT bindings", instead of the legacy
support-8bit property.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Chris Ball <cjb@laptop.org>
2012-06-11 11:48:43 -06:00
Marek Vasut
a3e545e9ab mmc: mxs-mmc: Move of_match_table out of CONFIG_PM
Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 10:16:40 -04:00
Heiko Stübner
81ec1daa11 mmc: sdhci-s3c: pass IRQF ONESHOT to request threaded irq
Fix a boot regression in existing kernels causing:

genirq: Threaded irq requested with handler=NULL and !ONESHOT for irq XXX

caused by 1c6c6952 (genirq: Reject bogus threaded irq requests).

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 09:53:22 -04:00
Jaehoon Chung
85e727edb9 mmc: core: return an error on suspend if mmc_deselect_cards fails
When mmc_host is not spi mode, mmc/sd is doing mmc_deselect_cards().
mmc_deselect_cards could be returned error.
If returned error, we can know something wrong when enter suspend.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 09:49:47 -04:00
Tony Lindgren
ebbe6f889f mmc: omap: Fix broken reg_shift initialization
Commit fa550189 (mmc: core: Prevent eMMC VCC supply to be cut from late init)
slightly affected timings for how things are done for the omap MMC driver
causing the MMC cards not getting detected any longer.

Turns out this was caused by buggy reg_shift initialization in the omap
MMC driver that was happening after mmc_add_host() was being called.

Fix this by initializing reg_shift before mmc_add_host() is called.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 09:47:49 -04:00
Tony Lindgren
3caf41406d mmc: omap: Fix NULL pointer dereference if mmc_omap_new_slot() fails
Commit b01a4f1c (mmc: omap: convert to per instance workqueue) initializes
the workqueue too late causing the following:

Unable to handle kernel NULL pointer dereference at virtual address 00000000
pgd = c0004000
[00000000] *pgd=00000000
Internal error: Oops: 5 [#1] SMP ARM
Modules linked in:
CPU: 0    Not tainted  (3.4.0-08218-gb48b2c3 #158)
PC is at __queue_work+0x8/0x46c
LR is at queue_work_on+0x38/0x40
pc : [<c005bb4c>]    lr : [<c005c00c>]    psr: 60000193
sp : c0691e1c  ip : 00000000  fp : c07374ac
r10: c7aae400  r9 : c0395700  r8 : 00000100
r7 : c0691e70  r6 : 00000000  r5 : 00000000  r4 : c7aae440
r3 : 00000001  r2 : c7aae440  r1 : 00000000  r0 : 00000000
Flags: nZCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
Control: 00c5387d  Table: 80004000  DAC: 00000017
Process swapper/0 (pid: 0, stack limit = 0xc06902f8)
Stack: (0xc0691e1c to 0xc0692000)

Fix this by initializing the workqueue before mmc_omap_remove_slot()
get called. Tested on n770, looks like n800 at least still has some
other issue with MMC.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 09:45:50 -04:00
Tony Lindgren
4f837791d9 mmc: omap: Fix a section warning regression
Commit b6e0703b (mmc: omap: make it behave well as a module) made some
__devinit changes but missed one function causing a section warning:

WARNING: vmlinux.o(.devinit.text+0x8604): Section mismatch in reference
from the function mmc_omap_probe)

The function __devinit mmc_omap_probe() references a function
__init mmc_omap_new_slot().

Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 09:44:09 -04:00
Seungwon Jeon
e419990b5e mmc: dw_mmc: correct the calculation for CLKDIV
In case of "host->bus_hz < slot->clock", divider value is
miscalculated. And clock divider register value is multiple of 2. If
calculated divider value is odd number, result can be over-clocking.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Will Newton <will.newton@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 09:38:51 -04:00
Seungwon Jeon
fda5f73686 mmc: dw_mmc: fix incorrect setting of host->data of NULL
Setting host->data to NULL is incorrect sequence in
dw_mci_command_complete. This early setting makes the skip of
dma_unmap_sg in dw_mci_dma_cleanup.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Will Newton <will.newton@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 09:37:03 -04:00
Seungwon Jeon
141a712a4e mmc: dw_mmc: fix the IDMAC sw reset
IDMAC may not be cleaned in driver probe if it has been already used in
boot time. So IDMAC needs sw reset newly. And DMA interface reset
precedes the internal DMAC reset. Additionally SDMMC_IDMAC_SWRESET is
replaced with magic code.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Will Newton <will.newton@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 09:36:21 -04:00
Seungwon Jeon
eed6c63cef mmc: dw_mmc: fix the transmission handling in IDMAC
DTO interrupt can be later than transmit interrupt(IDMAC) in case of
write. Current handling of IDMAC interrupt sets EVENT_DATA_COMPLETE as
well as EVENT_XFER_COMPLETE regardless of DTO rising. This makes the
current request finish in tasklet and permits the next request even
though current data transfer is still in progress. As a result, sequence
is broken and lock-up happens. Setting EVENT_DATA_COMPLETE is not proper
after IDMAC interrupt. It should be taken after DTO interrupt is
generated.

Reported-by: Dmitry Shmidt <dimitrysh@android.com>
Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Hyeonsu Kim <hyeonsu.kim@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 09:35:47 -04:00
Yong Ding
2a0fe914a3 mmc: sdio: fix setting card data bus width as 4-bit
SDIO_CCCR_IF[1:0] in SDIO card is used for card data bus width
setting as below:

     00b: 1-bit bus
     01b: Reserved
     10b: 4-bit bus
     11b: 8-bit bus (only for embedded SDIO)

And sdio_enable_wide is for setting data bus width as 4-bit.
But currently, it first reads the register, second OR' 1b with
SDIO_CCCR_IF[1], and then writes it back.

As we can see, this is based on such assumption that the
SDIO_CCCR_IF[0] is always 0. Apparently, this is not right.

Signed-off-by: Yong Ding <yongd@marvell.com>
Acked-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 09:22:53 -04:00
Nicolas Ferre
693e5e2025 mmc: atmel-mci: fix burst/chunk size modification
The use of DMA slave config operation requires that the burst size
(aka chunk size) is specified through this interface.
Modify atmel-mci slave driver to use this specification on its side.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 08:52:12 -04:00
Ludovic Desroches
b87cc1b5d3 mmc: atmel-mci: fix data timeout issue
The data timeout timer was configured after mmc_add_host call. So, with bad
timings, it was possible to have a mmc request causing mod_timer call on a
non setup timer.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 05:57:27 -04:00
Chris Ball
09eeff52bf mmc: sdhci: Use DBG() instead of pr_warning() on large timeout
3bdc9ba892 ("mmc: use really long write timeout to deal with crappy
cards") in 3.4 increased the write timeout that the core sends to host
drivers to 3 seconds.  This makes sdhci's "requested timeout too large"
warning trigger on every write; so, change this pr_warning() to a DBG().

Reported-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 05:52:36 -04:00
Linus Torvalds
84a442b9a1 arm-soc: device tree conversions, part 2
These continue the device tree work from part 1, this set is for the
 tegra, mxs and imx platforms, all of which have dependencies on clock
 or pinctrl changes submitted earlier.
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Merge tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm-soc device tree conversions (part 2) from Olof Johansson:
 "These continue the device tree work from part 1, this set is for the
  tegra, mxs and imx platforms, all of which have dependencies on clock
  or pinctrl changes submitted earlier."

Fix up trivial conflicts due to nearby changes in
drivers/{gpio/gpio,i2c/busses/i2c}-mxs.c

* tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (73 commits)
  ARM: dt: tegra: invert status=disable vs status=okay
  ARM: dt: tegra: consistent basic property ordering
  ARM: dt: tegra: sort nodes based on bus order
  ARM: dt: tegra: remove duplicate device_type property
  ARM: dt: tegra: consistenly use lower-case for hex constants
  ARM: dt: tegra: format regs properties consistently
  ARM: dt: tegra: gpio comment cleanup
  ARM: dt: tegra: remove unnecessary unit addresses
  ARM: dt: tegra: whitespace cleanup
  ARM: dt: tegra cardhu: fix typo in SDHCI node name
  ARM: dt: tegra: cardhu: register core regulator tps62361
  ARM: dt: tegra30.dtsi: Add SMMU node
  ARM: dt: tegra20.dtsi: Add GART node
  ARM: dt: tegra30.dtsi: Add Memory Controller(MC) nodes
  ARM: dt: tegra20.dtsi: Add Memory Controller(MC) nodes
  ARM: dt: tegra: Add device tree support for AHB
  ARM: dts: enable audio support for imx28-evk
  ARM: dts: enable i2c device for imx28-evk
  i2c: mxs: add device tree probe support
  ARM: dts: enable mmc for imx28-evk
  ...
2012-05-26 12:57:47 -07:00
Linus Torvalds
2795343705 arm-soc: clock driver changes
The new clock subsystem was merged in linux-3.4 without any users, this
 now moves the first three platforms over to it: imx, mxs and spear.
 
 The series also contains the changes for the clock subsystem itself,
 since Mike preferred to have it together with the platforms that require
 these changes, in order to avoid interdependencies and conflicts.
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Merge tag 'clock' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm-soc clock driver changes from Olof Johansson:
 "The new clock subsystem was merged in linux-3.4 without any users,
  this now moves the first three platforms over to it: imx, mxs and
  spear.

  The series also contains the changes for the clock subsystem itself,
  since Mike preferred to have it together with the platforms that
  require these changes, in order to avoid interdependencies and
  conflicts."

Fix up trivial conflicts in arch/arm/mach-kirkwood/common.c (code
removed in one branch, added OF support in another) and
drivers/dma/imx-sdma.c (independent changes next to each other).

* tag 'clock' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (97 commits)
  clk: Fix CLK_SET_RATE_GATE flag validation in clk_set_rate().
  clk: Provide dummy clk_unregister()
  SPEAr: Update defconfigs
  SPEAr: Add SMI NOR partition info in dts files
  SPEAr: Switch to common clock framework
  SPEAr: Call clk_prepare() before calling clk_enable
  SPEAr: clk: Add General Purpose Timer Synthesizer clock
  SPEAr: clk: Add Fractional Synthesizer clock
  SPEAr: clk: Add Auxiliary Synthesizer clock
  SPEAr: clk: Add VCO-PLL Synthesizer clock
  SPEAr: Add DT bindings for SPEAr's timer
  ARM i.MX: remove now unused clock files
  ARM: i.MX6: implement clocks using common clock framework
  ARM i.MX35: implement clocks using common clock framework
  ARM i.MX5: implement clocks using common clock framework
  ARM: Kirkwood: Replace clock gating
  ARM: Orion: Audio: Add clk/clkdev support
  ARM: Orion: PCIE: Add support for clk
  ARM: Orion: XOR: Add support for clk
  ARM: Orion: CESA: Add support for clk
  ...
2012-05-26 12:42:29 -07:00
Linus Torvalds
ce53044c68 arm-soc: driver specific updates
These changes are specific to some driver that may be used by multiple
 boards or socs. The most significant change in here is the move of the
 samsung iommu code from a platform specific in-kernel interface to the
 generic iommu subsystem.
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Merge tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm-soc driver specific updates from Olof Johansson:
 "These changes are specific to some driver that may be used by multiple
  boards or socs.  The most significant change in here is the move of
  the samsung iommu code from a platform specific in-kernel interface to
  the generic iommu subsystem."

Fix up trivial conflicts in arch/arm/mach-exynos/Kconfig

* tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (28 commits)
  mmc: dt: Consolidate DT bindings
  iommu/exynos: Add iommu driver for EXYNOS Platforms
  ARM: davinci: optimize the DMA ISR
  ARM: davinci: implement DEBUG_LL port choice
  ARM: tegra: Add SMMU enabler in AHB
  ARM: tegra: Add Tegra AHB driver
  Input: pxa27x_keypad add choice to set direct_key_mask
  Input: pxa27x_keypad direct key may be low active
  Input: pxa27x_keypad bug fix for direct_key_mask
  Input: pxa27x_keypad keep clock on as wakeup source
  ARM: dt: tegra: pinmux changes for USB ULPI
  ARM: tegra: add USB ULPI PHY reset GPIO to device tree
  ARM: tegra: don't hard-code USB ULPI PHY reset_gpio
  ARM: tegra: change pll_p_out4's rate to 24MHz
  ARM: tegra: fix pclk rate
  ARM: tegra: reparent sclk to pll_c_out1
  ARM: tegra: Add pllc clock init table
  ARM: dt: tegra cardhu: basic audio support
  ARM: dt: tegra30.dtsi: Add audio-related nodes
  ARM: tegra: add AUXDATA required for audio
  ...
2012-05-26 12:22:27 -07:00
Linus Torvalds
92bf3d0941 MMC highlights for 3.5:
Drivers:
  - at91-mci: This driver will be replaced by atmel-mci in 3.7.
  - atmel-mci: Add support for old at91-mci hardware.
  - dw_mmc: Allow multiple controllers; this previously caused corruption.
  - imxmmc: Remove this driver, replaced by mxcmmc.
  - mmci: Add device tree support.
  - omap: Allow multiple controllers.
  - omap_hsmmc: Auto CMD12, DDR support.
  - tegra: Support SD 3.0 spec.
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Merge tag 'mmc-merge-for-3.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc

Pull MMC changes from Chris Ball
 - at91-mci: This driver will be replaced by atmel-mci in 3.7.
 - atmel-mci: Add support for old at91-mci hardware.
 - dw_mmc: Allow multiple controllers; this previously caused
   corruption.
 - imxmmc: Remove this driver, replaced by mxcmmc.
 - mmci: Add device tree support.
 - omap: Allow multiple controllers.
 - omap_hsmmc: Auto CMD12, DDR support.
 - tegra: Support SD 3.0 spec.

Fix up the usual trivial conflicts in feature-removal-schedule.txt

* tag 'mmc-merge-for-3.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (38 commits)
  mmc: at91-mci: this driver is now deprecated
  mmc: omap_hsmmc: pass IRQF_ONESHOT to request_threaded_irq
  mmc: block: Allow disabling 512B sector size emulation
  mmc: atmel-mci: add debug logs
  mmc: atmel-mci: add support for version lower than v2xx
  mmc: atmel-mci: change the state machine for compatibility with old IP
  mmc: atmel-mci: the r/w proof capability lack was not well managed
  mmc: dw_mmc: Fixed sdio interrupt mask bit setting bug
  mmc: omap: convert to module_platform_driver
  mmc: omap: make it behave well as a module
  mmc: omap: convert to per instance workqueue
  mmc: core: Remove dead code
  mmc: card: Avoid null pointer dereference
  mmc: core: Prevent eMMC VCC supply to be cut from late init
  mmc: dw_mmc: make multiple instances of dw_mci_card_workqueue
  mmc: queue: remove redundant memsets
  mmc: queue: rename mmc_request function
  mmc: core: skip card initialization if power class selection fails
  mmc: core: fix the signaling 1.8V for HS200
  mmc: core: fix the decision of HS200/DDR card-type
  ...
2012-05-25 08:23:32 -07:00
Linus Torvalds
813a95e5b4 arm-soc: soc-specific pinctrl changes
With this, five platforms are moving to the relatively new pinctrl
 subsystem for their pin management, replacing the older soc specific
 in-kernel interfaces with common code.
 
 There is quite a bit of net addition of code for each platform being
 added to the pinctrl subsystem. but the payback comes later when adding
 new boards can be done by only providing new device trees instead.
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Merge tag 'pinctrl' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm soc-specific pinctrl changes from Olof Johansson:
 "With this, five platforms are moving to the relatively new pinctrl
  subsystem for their pin management, replacing the older soc specific
  in-kernel interfaces with common code.

  There is quite a bit of net addition of code for each platform being
  added to the pinctrl subsystem.  But the payback comes later when
  adding new boards can be done by only providing new device trees
  instead."

Fix up trivial conflicts in arch/arm/mach-ux500/{Makefile,board-mop500.c}

* tag 'pinctrl' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (61 commits)
  mtd: nand: gpmi: fix compile error caused by pinctrl call
  ARM: PRIMA2: select PINCTRL and PINCTRL_SIRF in Kconfig
  ARM: nomadik: enable PINCTRL_NOMADIK where needed
  ARM: mxs: enable pinctrl support
  video: mxsfb: adopt pinctrl support
  ASoC: mxs-saif: adopt pinctrl support
  i2c: mxs: adopt pinctrl support
  mtd: nand: gpmi: adopt pinctrl support
  mmc: mxs-mmc: adopt pinctrl support
  serial: mxs-auart: adopt pinctrl support
  serial: amba-pl011: adopt pinctrl support
  spi/imx: adopt pinctrl support
  i2c: imx: adopt pinctrl support
  can: flexcan: adopt pinctrl support
  net: fec: adopt pinctrl support
  ARM: ux500: switch MSP to using pinctrl for pins
  ARM: ux500: alter MSP registration to return a device pointer
  ARM: ux500: switch to using pinctrl for uart0
  ARM: ux500: delete custom pin control system
  ARM: ux500: switch over to Nomadik pinctrl driver
  ...
2012-05-22 09:39:42 -07:00
Russell King
ddf90a2ff2 Merge branches 'amba', 'devel-stable', 'fixes', 'mach-types', 'mmci', 'pci' and 'versatile' into for-linus 2012-05-21 15:15:10 +01:00
Ludovic Desroches
0caaa9539a mmc: at91-mci: this driver is now deprecated
at91-mci is deprecated since atmel-mci can deal with all chips.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 14:33:48 -04:00
Ming Lei
db35f83ef4 mmc: omap_hsmmc: pass IRQF_ONESHOT to request_threaded_irq
The flag of IRQF_ONESHOT should be passed to request_threaded_irq,
otherwise the following failure message should be dumped because
hardware handler is defined as NULL:

[    3.383483] genirq: Threaded irq requested with handler=NULL and
!ONESHOT for irq 368
[    3.392730] omap_hsmmc: probe of omap_hsmmc.0 failed with error -22

The patch fixes one kernel hang bug which is caused by mmc card
probe failure and root device can't be brought up.

Signed-off-by: Ming Lei <ming.lei@canonical.com>
Acked-by: Venkatraman S <svenkatr@ti.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 10:28:27 -04:00
Saugata Das
a5075eb948 mmc: block: Allow disabling 512B sector size emulation
This patch adds support for large sector size of 4KB by disabling
emulation.  This patch passes eMMC DATA_SECTOR_SIZE as the logical
block size during mmc_blk_alloc_req.

In order to use this patch for 4KB sector size, ensure that
USE_NATIVE_SECTOR is enabled, partition table is 4KB sector size
aligned and file system block and sector size are 4KB multiples.

Signed-off-by: Saugata Das <saugata.das@linaro.org>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 09:35:21 -04:00
Ludovic Desroches
6801c41a77 mmc: atmel-mci: add debug logs
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 08:43:00 -04:00
Ludovic Desroches
24011f3464 mmc: atmel-mci: add support for version lower than v2xx
Fix mci IP bugs and endianness issue.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 08:42:52 -04:00
Ludovic Desroches
f51775471a mmc: atmel-mci: change the state machine for compatibility with old IP
The state machine use in atmel-mci can't work with old IP versions
(< 0x200).  This patch allows to have a common state machine for all
versions in order to remove at91-mci driver only used for old versions.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 08:41:34 -04:00
Ludovic Desroches
7a90dcc2d7 mmc: atmel-mci: the r/w proof capability lack was not well managed
First mci IPs (mainly on rm9200 and 9261) don't have the r/w proof
capability.  The driver didn't work correctly without this capability
in PDC mode because of the double buffer switch which is too slow
even if we stop the transfer to perform this switch.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 08:41:10 -04:00
Kyoungil Kim
705ad0472b mmc: dw_mmc: Fixed sdio interrupt mask bit setting bug
The sdio interrupt mask bits are arranged in [31:16].
(1 << SDMMC_INT_SDIO(slot->id))) does 16 bits left shift twice.
So this patch changes to do 16 bits left shift only one time.

Signed-off-by: Kyoungil Kim <ki0351.kim@samsung.com>
Acked-by: Shashidhar Hiremath <shashidharh@vayavyalabs.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 08:34:48 -04:00
Venkatraman S
680f1b5b21 mmc: omap: convert to module_platform_driver
Get rid of boilerplate code by using module_platform_driver macro,
no functional changes.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Acked-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 08:26:38 -04:00
Venkatraman S
b6e0703bbf mmc: omap: make it behave well as a module
Use proper __devinit and __devexit annotation for driver functions.
Instantiate the probe function for driver_ops instead of a probe in
the register function.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Acked-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 08:26:15 -04:00
Venkatraman S
b01a4f1ce2 mmc: omap: convert to per instance workqueue
Currently, a global mmc_omap_wq is created for all instances of omap
hosts, which can lead to races and doesn't lend itself to unload the
module cleanly.  Instead, create per instance workqueue and remove
 the common workqueue.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Acked-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 08:25:41 -04:00
Arnd Bergmann
3c0dec5f58 Merge branch 'clk-next' of git://git.linaro.org/people/mturquette/linux into next/clock
* 'clk-next' of git://git.linaro.org/people/mturquette/linux:
  clk: Fix CLK_SET_RATE_GATE flag validation in clk_set_rate().
  clk: Provide dummy clk_unregister()
  ARM: Kirkwood: Replace clock gating
  ARM: Orion: Audio: Add clk/clkdev support
  ARM: Orion: PCIE: Add support for clk
  ARM: Orion: XOR: Add support for clk
  ARM: Orion: CESA: Add support for clk
  ARM: Orion: SDIO: Add support for clk.
  ARM: Orion: NAND: Add support for clk, if there is one.
  ARM: Orion: EHCI: Add support for enabling clocks
  ARM: Orion: SATA: Add per channel clk/clkdev support.
  ARM: Orion: UART: Get the clock rate via clk_get_rate().
  ARM: Orion: WDT: Add clk/clkdev support
  ARM: Orion: Eth: Add clk/clkdev support.
  ARM: Orion: SPI: Add clk/clkdev support.
  ARM: Orion: Add clocks using the generic clk infrastructure.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-05-16 16:35:25 +02:00
Arnd Bergmann
deb88cc3c6 Merge branch 'drivers/mmc' into next/dt2
Changes in the dt2 branch move stuff around that gets changed
in the drivers/mmc branch. I chose a non-obvious resolution by
adding the new bus-width property into all the tegra sdhci device
nodes.

Conflicts:
	arch/arm/boot/dts/tegra-cardhu.dts
	arch/arm/boot/dts/tegra-harmony.dts
	arch/arm/boot/dts/tegra-ventana.dts

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-05-15 13:44:11 +02:00
Arnd Bergmann
c49314fa6c Merge branch 'drivers/mmc' into next/drivers
* drivers/mmc:
  mmc: dt: Consolidate DT bindings

Also pulls in the omap/dt-missed-3.4 branch as a dependency.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-05-15 13:31:11 +02:00
Arnd Bergmann
7f217794ff mmc: dt: Consolidate DT bindings
This patch unifies the current DT MMC bindings documentation and code,
adds generic MMC DT bindings documentation, and updates .dts files for
consistency.

[cjb: typo fixes, addition of max-frequency property]
Signed-off-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-05-15 13:29:42 +02:00
Arnd Bergmann
4f5a9fd341 Merge branch 'imx/pinctrl' into imx/clock
Conflicts:
	drivers/mmc/host/sdhci-esdhc-imx.c
	drivers/net/ethernet/freescale/fec.c
	drivers/spi/spi-imx.c
	drivers/tty/serial/imx.c

This resolves dependencies between the pinctrl and clock changes
in imx.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-05-14 15:30:52 +02:00
Arnd Bergmann
304ea74770 Merge branch 'imx/dt/for-3.5' of git://git.linaro.org/people/shawnguo/linux-2.6.git into next/dt2
Shawn Guo <shawn.guo@linaro.org> writes:

  I chose to base it on Sascha's imx-common-clk series than -rc, because
  otherwise it will keep patching clock file that has been removed by
  imx-common-clk series.  It also depends on imx-pinctrl pull-request
  I just sent to be functional.

  Note: when imx-common-clk and imx-pinctrl get merged together, the
  following files will have conflicts.  But the conflicts should not be
  so hard to resolve.

[arnd: resolved those merge conflicts by pulling pinctrl branch]

* imx/dt: (24 commits)
  ARM: dts: imx53-qsb: enable audio support
  ARM: dts: imx51-babbage: enable audio support
  ARM: imx: add audio codec clk lookup for imx53-qsb
  ARM: imx: add audmux pad setting for imx51-babbage
  ARM: imx: add more imx5 ssi clocks
  ARM: dts: imx53-qsb: Add Dialog DA9053 PMIC support
  ARM: dts: imx6q-sabrelite: add serial2 pinctrl support
  ARM: dts: imx6q-sabrelite: add sound device imx6q-sabrelite-sgtl5000
  ARM: imx6q_sabrelite: clk_register_clkdev cko1 for sgtl5000
  ARM: imx6q: add ssi1_ipg clk_lookup
  ARM: dts: imx6q-sabrelite: add audmux pinctrl support
  ARM: dts: imx6q-sabrelite: add i2c1 pinctrl support
  ARM: dts: imx6q-sabrelite: add audmux device
  ARM: dts: imx6q-sabrelite: add ssi device
  ARM: dts: imx6q-arm2: add pinctrl state for usdhc
  ARM: imx6: Add UART2 for low-level debug
  ARM: imx6q: register phy fixup only when CONFIG_PHYLIB is enabled
  ARM: imx6q: move imx6q_sabrelite specific code to a dedicated function
  ARM: dts: imx6q-sabrelite: Add SPI NOR support
  ARM: dts: Add basic support for imx6q-sabresd
  ...

Pulls in imx/pinctrl and imx/clock as dependencies.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-05-14 15:28:19 +02:00
Arnd Bergmann
6b204283f2 Merge branch 'imx/pinctrl' into imx/dt
Conflicts:
	drivers/mmc/host/sdhci-esdhc-imx.c
	drivers/net/ethernet/freescale/fec.c
	drivers/spi/spi-imx.c
	drivers/tty/serial/imx.c

This resolves some simply but annoying conflicts.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-05-14 15:23:13 +02:00
Olof Johansson
e29402edf8 Merge branch 'mxs/dt/for-3.5' of git://git.linaro.org/people/shawnguo/linux-2.6 into next/dt2
* 'mxs/dt/for-3.5' of git://git.linaro.org/people/shawnguo/linux-2.6: (51 commits)
  ARM: dts: enable audio support for imx28-evk
  ARM: dts: enable i2c device for imx28-evk
  i2c: mxs: add device tree probe support
  ARM: dts: enable mmc for imx28-evk
  ARM: dts: enable mmc for imx23-evk
  mmc: mxs-mmc: add device tree support
  mmc: mxs-mmc: copy wp_gpio in struct mxs_mmc_host
  mmc: mxs-mmc: have dma_channel than dma_res in mxs_mmc_host
  mmc: mxs-mmc: use devm_* helper to make cleanup simpler
  mmc: mxs-mmc: move header from mach into linux folder
  mmc: mxs-mmc: get rid of the use of cpu_is_xxx
  mmc: mxs-mmc: let ssp_is_old take host as parameter
  mmc: mxs-mmc: use global stmp_device functionality
  ARM: mxs: add gpio support for device tree boot
  gpio/mxs: add device tree probe
  gpio/mxs: get rid of the use of cpu_is_xxx
  gpio/mxs: use devm_* helpers to make error handling simple
  ARM: mxs: add mxs-dma dt support
  ARM: mxs: do not add dma device by default
  dma: mxs-dma: add device tree probe support
  ...
2012-05-12 22:33:24 -07:00
Shawn Guo
6de4d817aa mmc: mxs-mmc: add device tree support
It adds device tree probe support for mxs-mmc driver.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Chris Ball <cjb@laptop.org>
2012-05-13 08:27:37 +08:00
Shawn Guo
31b0ff5e73 mmc: mxs-mmc: copy wp_gpio in struct mxs_mmc_host
Copy wp_gpio from platform_data into struct mxs_mmc_host, so that
the use of platform_data can be limited in probe function, which
will ease the device tree probe.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Chris Ball <cjb@laptop.org>
2012-05-13 08:05:58 +08:00
Shawn Guo
b60188c820 mmc: mxs-mmc: have dma_channel than dma_res in mxs_mmc_host
It replaces dma_res with dma_channel in struct mxs_mmc_host, so that
the device tree support will be a little easier, since dma channel
can not be retrieved from "struct resource *dma_res".

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Chris Ball <cjb@laptop.org>
2012-05-13 08:05:51 +08:00
Shawn Guo
df06bfc724 mmc: mxs-mmc: use devm_* helper to make cleanup simpler
Use devm_request_and_ioremap and devm_request_irq helpers to clean up
the code a little bit.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Chris Ball <cjb@laptop.org>
2012-05-13 08:05:45 +08:00
Shawn Guo
81f38ee8e6 mmc: mxs-mmc: move header from mach into linux folder
Rename arch/arm/mach-mxs/include/mach/mmc.h to
include/linux/mmc/mxs-mmc.h, so that mxs-mmc driver becomes
<mach/*> inclusion free.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Chris Ball <cjb@laptop.org>
2012-05-13 08:05:38 +08:00
Shawn Guo
ef9b4d3996 mmc: mxs-mmc: get rid of the use of cpu_is_xxx
The register HW_SSP_VERSION is broken for ssp version detection,
as the address of the register is different between imx23 and imx28.
Let's use platform_device_id to detect the device, so that the use
of cpu_is_xxx can be removed.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Chris Ball <cjb@laptop.org>
2012-05-13 08:05:31 +08:00
Shawn Guo
e0bf141db2 mmc: mxs-mmc: let ssp_is_old take host as parameter
Let macro ssp_is_old take host as parameter to make the code easy
to read.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Chris Ball <cjb@laptop.org>
2012-05-13 08:05:25 +08:00
Shawn Guo
70e6020688 mmc: mxs-mmc: use global stmp_device functionality
Use global stmp_device functionality to reduce mach-dependency.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Chris Ball <cjb@laptop.org>
2012-05-13 08:05:07 +08:00
Olof Johansson
4a0dfe69fe Merge branch 'imx/pinctrl/for-3.5' of git://git.linaro.org/people/shawnguo/linux-2.6 into next/pinctrl
* 'imx/pinctrl/for-3.5' of git://git.linaro.org/people/shawnguo/linux-2.6: (290 commits)
  ARM: mxs: enable pinctrl support
  video: mxsfb: adopt pinctrl support
  ASoC: mxs-saif: adopt pinctrl support
  i2c: mxs: adopt pinctrl support
  mtd: nand: gpmi: adopt pinctrl support
  mmc: mxs-mmc: adopt pinctrl support
  serial: mxs-auart: adopt pinctrl support
  serial: amba-pl011: adopt pinctrl support
  spi/imx: adopt pinctrl support
  i2c: imx: adopt pinctrl support
  can: flexcan: adopt pinctrl support
  net: fec: adopt pinctrl support
  tty: serial: imx: adopt pinctrl support
  mmc: sdhci-imx-esdhc: adopt pinctrl support
  ARM: imx6q: switch to use pinctrl subsystem
  ARM: mxs: enable pinctrl dummy states
  ARM: imx: enable pinctrl dummy states
  +3.4-rc5 update
2012-05-11 22:59:11 -07:00
Shawn Guo
9c92cf2409 mmc: mxs-mmc: adopt pinctrl support
Cc: linux-mmc@vger.kernel.org
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Chris Ball <cjb@laptop.org>
2012-05-12 09:43:15 +08:00
Dong Aisheng
e62d8b8fe7 mmc: sdhci-imx-esdhc: adopt pinctrl support
Cc: linux-mmc@vger.kernel.org
Cc: Chris Ball <cjb@laptop.org>
Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
2012-05-11 14:56:01 +08:00
Olof Johansson
caafc71b1a DaVinci SoC updates for v3.5
This pull request updates the DaVinci SoC support to implement DEBUG_LL port
 choice and optimizes the DMA ISR by removing unnecessary register reads.
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Merge tag 'v3.5-soc' of git://gitorious.org/linux-davinci/linux-davinci into next/drivers

DaVinci SoC updates for v3.5

This pull request updates the DaVinci SoC support to implement DEBUG_LL port
choice and optimizes the DMA ISR by removing unnecessary register reads.

* tag 'v3.5-soc' of git://gitorious.org/linux-davinci/linux-davinci:
  ARM: davinci: optimize the DMA ISR
  ARM: davinci: implement DEBUG_LL port choice
  + sync with Linux 3.4-rc6

Signed-off-by: Olof Johansson <olof@lixom.net>
2012-05-10 00:23:17 -07:00
Olof Johansson
bf98a6eaa9 Merge branch 'for-3.5/dt' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/dt2
By Stephen Warren (29) and others
via Stephen Warren
* 'for-3.5/dt' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra: (43 commits)
  ARM: dt: tegra trimslice: add support for audio
  ARM: dt: tegra trimslice: enable SDHCI1 controller
  ARM: dt: tegra trimslice: add RTC I2C device
  ARM: dt: tegra seaboard: add i2c devices
  ARM: dt: tegra seaboard: configure I2C2 pinmux
  ARM: dt: tegra seaboard: fix I2C2 SCL rate
  ARM: dt: tegra: enable als and proximity sensor
  + pinctrl mergebase branch

The pinctrl mergebase branch merge conflicts in drivers/pinctrl/core.c
that were resolved.

Signed-off-by: Olof Johansson <olof@lixom.net>
2012-05-09 23:51:32 -07:00
Olof Johansson
bd69e27304 Merge branch 'for-3.5/usb-ulpi' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/drivers
By Stephen Warren (30) and others
via Stephen Warren
* 'for-3.5/usb-ulpi' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra: (7 commits)
  ARM: dt: tegra: pinmux changes for USB ULPI
  ARM: tegra: add USB ULPI PHY reset GPIO to device tree
  ARM: tegra: don't hard-code USB ULPI PHY reset_gpio
  ARM: tegra: change pll_p_out4's rate to 24MHz
  ARM: tegra: fix pclk rate
  ARM: tegra: reparent sclk to pll_c_out1
  ARM: tegra: Add pllc clock init table
  + depends/pinctrl/mergebase branch

Pinctrl mergebase has a conflict in drivers/pinctrl/core.c that was resolved.

Signed-off-by: Olof Johansson <olof@lixom.net>
2012-05-09 23:47:14 -07:00
Olof Johansson
7488185d07 Merge branch 'for-3.5/gpio-pinmux' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/pinctrl
By Stephen Warren
via Stephen Warren
* 'for-3.5/gpio-pinmux' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
  pinctrl: tegra: error reporting cleanup
  pinctrl: tegra: debugfs enhancements
  pinctrl: tegra: refactor probe handling
  ARM: dt: tegra20: add pinmux to device tree
  ARM: dt: tegra cardhu: add pinmux to device tree
  ARM: tegra: Remove pre-pinctrl pinmux driver
  ARM: tegra: Switch to new pinctrl driver
  gpio: tegra: Hide tegra_gpio_enable/disable()
  ARM: tegra: seaboard: Don't gpio_request() ISL29018_IRQ
  gpio: tegra: configure pins during irq_set_type
  ARM: tegra: Remove VBUS_GPIO handling from board files
  usb: ehci-tegra: Add vbus_gpio to platform data
2012-05-09 23:43:04 -07:00
Philippe De Swert
f6f44590f2 mmc: core: Remove dead code
bus_width is passed to the function and when 0 (MMC_BUS_WIDTH_1)
will cause the function to return. So in in the second test it
definitely is different from 0, and the third test is redundant.

Signed-off-by: Philippe De Swert <philippedeswert@gmail.com>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Acked-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-09 20:47:49 -04:00
Philippe De Swert
1c02f000e7 mmc: card: Avoid null pointer dereference
After the null check on md the code jumped to cmd_done, which then
will dereference md in mmc_blk_put. This patch avoids the possible
null pointer dereference in that case.

Signed-off-by: Philippe De Swert <philippedeswert@gmail.com>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-09 20:47:37 -04:00
Ulf Hansson
fa5501890d mmc: core: Prevent eMMC VCC supply to be cut from late init
For eMMC cards that has been initialized from a bootloader,
the VCC voltage supply must not be cut in an uncontrolled
manner, without first sending SLEEP or POWEROFF_NOTIFY.

The regulator_init_complete late initcall, may cut the VCC
regulator if it's reference counter is zero. To be able to
prevent the regulator from being cut, mmc_start_host, which
should execute at device init and thus before late init,
calls mmc_power_up. Then the host driver is able to increase
the reference to the regulator.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-09 12:55:01 -04:00
Thomas Abraham
95dcc2cb6c mmc: dw_mmc: make multiple instances of dw_mci_card_workqueue
The variable 'dw_mci_card_workqueue' is a global variable shared between
multiple instances of the dw_mmc host controller. Due to this, data
corruption has been noticed when multiple instances of dw_mmc controllers
are actively reading/writing the media. Fix this by adding a instance
of 'struct workqueue_struct' for each host instance and removing the
global 'dw_mci_card_workqueue' instance.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-09 10:14:10 -04:00
Venkatraman S
b41b6f1d1c mmc: queue: remove redundant memsets
Not needed to memset, as they are pointers and are assigned
to proper values in the next line anyway.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-09 10:10:46 -04:00
Venkatraman S
1b50f5f392 mmc: queue: rename mmc_request function
The name mmc_request is used for both the issue function
and a data structure, which creates conflicts in symbol lookups
in editors. Rename the function to mmc_request_fn.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-09 10:08:54 -04:00
Subhash Jadavani
3d93576e34 mmc: core: skip card initialization if power class selection fails
With current implementation of power class selection,
mmc_select_powerclass() should never fail. So treat any error
returned by this function as serious enough to skip the card
initialization.

Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-09 10:07:12 -04:00
Seungwon Jeon
10942aa40a mmc: core: fix the signaling 1.8V for HS200
Currently only 1.2V is treated for HS200 mode. If the host has only
1.8V I/O capability not 1.2V, mmc_set_signal_voltage can't be called
for 1.8V HS200. EXT_CSD_CARD_TYPE_SDR_1_8V needs to be considered.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-09 10:04:12 -04:00
Seungwon Jeon
96cf5f02ae mmc: core: fix the decision of HS200/DDR card-type
Current implementation decides the card type exclusively. Even though
eMMC device can support both HS200 and DDR mode, card type will be
set only for HS200. If the host doesn't support HS200 but has DDR
capability, then DDR mode can't be selected.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-09 10:03:21 -04:00
Andrew Lunn
f4f7561e03 ARM: Orion: SDIO: Add support for clk.
Some orion devices can gate the SDIO clock. If the clock exists,
enable/disable it as appropriate.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Jamie Lentin <jm@lentin.co.uk>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-05-08 16:34:00 -07:00
Lee Jones
c0a120a4bc mmc: mmci: Fix compiler error when CONFIG_OF is not set
error: implicit declaration of function 'mmci_dt_populate_generic_pdata'

This is due to the '#if CONFIG_OF' guards placed around
mmci_dt_populate_generic_pdata(), but not around the call to it. We
repair this by inserting a stub which elegantly returns when CONFIG_OF
is not set.

Reported-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-08 10:36:52 -04:00
Lee Jones
9a59701605 mmc: mmci: Use correct GPIO binding for IRQ requests
Now there are irqdomains in place for Snowball, we can request GPIO
IRQs directly by their binding. This replaces the previous method
of hard-coding the hwirq using u32 values in the DT.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-04 10:08:29 -04:00
Lee Jones
000bc9d5ed mmc: mmci: Enable Device Tree support for ux500 variants
Provide a means to collect attributes specific to ST-Ericsson's ux500
variant series. This patch registers itself as the AMBA driver to be
called during the probe process. Once all attributes and ux500 specifics
are are collected the normal mmci core probe is called.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-04 10:08:29 -04:00
Russell King
dfb85185bd AMBA: get rid of last two uses of NO_IRQ
This gets rid of the last two users of NO_IRQ in AMBA primecell
drivers.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-05-03 11:33:15 +01:00
Viresh Kumar
6ebaf8f2b0 mmc: sdhci-spear: Use devm_* derivatives
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: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-01 10:30:44 -04:00
Viresh Kumar
3524b5d1ed mmc: sdhci-spear: No need to check 'pdev == NULL' in probe
pdev is guaranteed to be valid in probe. And so check for non-NULL is
not required. Remove it.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-01 10:30:10 -04:00
Linus Torvalds
acdf2fc860 Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Pull [GIT PULL] slave-dmaengine fixes from Vinod Koul.

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine/amba-pl08x : reset phychan_hold on terminate all
  dma: pl330: fix a couple of compilation warnings
  dma/ste_dma40: fix erroneous comparison
  dma/ste_dma40: explicitly include regulator consumer header
  dma40: Improve the logic of stopping logical chan
  dmaengine: at_hdmac: remove clear-on-read in atc_dostart()
  dma: mxs-dma: enable channel in device_issue_pending call
  dmaengine: imx-dma: dont complete descriptor for cyclic dma
2012-04-26 15:33:36 -07:00
Linus Walleij
34fd421349 ARM: 7378/1: mmci: add support for the Nomadik MMCI variant
The Nomadik variant is somewhere inbetween the U300 and the Ux500
variant, its actually expose the same primecell ID as the U300
but had different characteristics so it needs a small revision
bump and hard-coding from the board/device tree. After this it
works just fine.

Acked-by: Ulf Hansson <ulf.hansson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-25 19:55:19 +01:00
Sascha Hauer
52dac61505 mmc sdhc i.MX: do not depend on grouped clocks
the current i.MX clock support groups together unrelated clocks
to a single clock which is then used by the driver. This can't
be accomplished with the generic clock framework so we instead
request the individual clocks in the driver. For i.MX there are
generally three different clocks:

ipg: bus clock (needed to access registers)
ahb: dma relevant clock, sometimes referred to as hclk in the datasheet
per: bit clock, pixel clock

This patch changes the driver to request the individual clocks.
Currently all clk_get will get the same clock until the SoCs
are converted to the generic clock framework

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-04-25 17:03:38 +02:00
Sascha Hauer
529aa29e03 mmc mxcmmc: do not depend on grouped clocks
the current i.MX clock support groups together unrelated clocks
to a single clock which is then used by the driver. This can't
be accomplished with the generic clock framework so we instead
request the individual clocks in the driver. For i.MX there are
generally three different clocks:

ipg: bus clock (needed to access registers)
ahb: dma relevant clock, sometimes referred to as hclk in the datasheet
per: bit clock, pixel clock

This patch changes the driver to request the individual clocks.
Currently all clk_get will get the same clock until the SoCs
are converted to the generic clock framework

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-04-25 17:03:38 +02:00
Guennadi Liakhovetski
0e9f480bb5 mmc: cd-gpio: protect against NULL context in mmc_cd_gpio_free()
Do not oops, even if mmc_cd_gpio_free() is mistakenly called on a driver
cleanup path, even though a previous call to mmc_cd_gpio_request() failed.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
[stable@: please apply to 3.3-stable]
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-24 12:21:22 -04:00
Chuanxiao Dong
0dd1bfeb6c mmc: core: check PM_SLEEP for mmc_bus_suspend/resume callbacks
If PM_SLEEP is not enabled, mmc.c will give warnning since mmc_bus_suspend/
mmc_bus_resume functions are defined but not used. This patch can fix this
warnning.

Reported-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-23 08:11:28 -04:00
Russell King
48b332f991 mmc: omap_hsmmc: release correct resource
res can be one of several resources, as this variable is re-used several
times during probe.  This can cause the wrong resource parameters to be
passed to release_mem_region().

Get the original memory resource before calling release_mem_region().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-22 11:17:42 -04:00
Pavan Kunapuli
ca5879d3ff mmc: tegra: support SDHCI SPEC 300
Tegra3 SDHOST controller doesn't advertise v3.00 support by default.
This support has to be enabled by configuring a vendor register in
the tegra3 sd host address space.

Signed-off-by: Pavan Kunapuli <pkunapuli@nvidia.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-22 11:17:39 -04:00
Nicolas Pitre
bbbc4c4d8c mmc: sdio: avoid spurious calls to interrupt handlers
Commit 06e8935feb ("optimized SDIO IRQ handling for single irq")
introduced some spurious calls to SDIO function interrupt handlers,
such as when the SDIO IRQ thread is started, or the safety check
performed upon a system resume.  Let's add a flag to perform the
optimization only when a real interrupt is signaled by the host
driver and we know there is no point confirming it.

Reported-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-22 11:17:28 -04:00
Sascha Hauer
6187fee46f mmc: remove imxmmc driver
This driver is broken since 2.6.31 when the traditional i.MX1
support was removed.

In theory the i.MX1 mmc controller can be supported by the mxcmmc
driver which basically is the same hardware. However, the i.MX1
controller has severe bugs which made several workarounds necessary which
resulted in a different driver structure. At that time it seemed easier
to write a second driver to support hardware without bugs.

As noone cared for the i.MX1 driver for a long time and it does
not compile, remove it.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-22 11:17:25 -04:00
Mark Brown
021459773d mmc: sdhci: Log what timeout was set if the timeout is too large
Rather than just logging that we came up with an excessively large timeout
say what the timeout was, this may provide some clues as to what the issue
is.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-22 11:17:16 -04:00
Jan Luebbe
7f8bea7f75 mmc: davinci_mmc: set MODULE_ALIAS to allow autoloading
Davinci MMC platform devices (as in mach-davinci/devices-da8xx.c) use
"davinci_mmc" as their name. To allow autoloading of the relevant
driver, the module needs to set the MODULE_ALIAS.

Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-22 11:16:58 -04:00
Rajendra Nayak
cd03d9a858 mmc: omap_hsmmc: Cleanup use of cpu_is_* for debounce_clock
There really does not seem to be a need to use cpu_is_* check for getting
the debounce clock as clkdev is perfectly capable of handling situations
when certain clocks are only available on select platforms.

Also get rid of the 'got_dbclk' flag and instead use the dbclk clock
pointer to know if a valid debounce clock exists for the platform.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-22 11:16:53 -04:00
Venkatraman S
31463b1415 mmc: omap_hsmmc: use spinlock IRQ safe variant
Prevent possible races between HSMMC/DMA IRQs and next requests.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-22 11:16:50 -04:00
Balaji T K
03b5d924b9 mmc: omap_hsmmc: add DDR support
Add Dual data rate support for omap_hsmmc.

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-22 11:16:47 -04:00
Balaji T K
dba3c29ea4 mmc: omap_hsmmc: Enable Auto CMD12
Enable Auto-CMD12 for multi block read/write on HSMMC.
Tested on OMAP4430, OMAP3430 and OMAP2430 SDP

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-22 11:16:43 -04:00
Ulf Hansson
7c57091940 mmc: core: Do not pre-claim host in suspend
Since SDIO drivers may want to do some SDIO operations in their suspend
callback functions, we must not keep the host claimed when calling them.

Daniel Drake reported that libertas_sdio encountered a deadlock in its
suspend function.

Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com>
Tested-by: Daniel Drake <dsd@laptop.org>
[stable@: please apply to 3.2-stable and 3.3-stable]
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 21:52:13 -04:00
Jaehoon Chung
e1631f989e mmc: dw_mmc: prevent NULL dereference for dma_ops
Now, dma_ops is assumed that use the IDMAC.  But if dma_ops is assigned
the pdata->dma_ops, we didn't ensure that callback function is defined.

If the callback isn't defined, then we should run in PIO mode.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 21:52:05 -04:00
Eric Bénard
b89152824f mmc: unbreak sdhci-esdhc-imx on i.MX25
This was broken by me in 37865fe915
("mmc: sdhci-esdhc-imx: fix timeout on i.MX's sdhci") where more
extensive tests would have shown that read or write of data to the
card were failing (even if the partition table was correctly read).

Signed-off-by: Eric Bénard <eric@eukrea.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 20:45:00 -04:00
H Hartley Sweeten
5ca6518832 mmc: cd-gpio: Include header to pickup exported symbol prototypes
Include the linux/mmc/cd-gpio.h header to pickup the prototypes
for the two exported symbols.

This quiets the sparse warnings:

warning: symbol 'mmc_cd_gpio_request' was not declared. Should it be static?
warning: symbol 'mmc_cd_gpio_free' was not declared. Should it be static?

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 20:45:00 -04:00
Daniel Drake
87b87a3fc0 mmc: sdhci: refine non-removable card checking for card detection
Commit c79396c191 ("mmc: sdhci: prevent card detection activity
for non-removable cards") disables card detection where the cards
are marked as non-removable.

This makes sense, but the implementation detail of calling
mmc_card_is_removable() causes some problems, because
mmc_card_is_removable() is overloaded with CONFIG_MMC_UNSAFE_RESUME
semantics.

In the OLPC XO case, we need CONFIG_MMC_UNSAFE_RESUME because our root
filesystem is stored on SD, but we also have external SD card slots
where we want automatic card detection.

Refine the check to only apply to hosts marked as MMC_CAP_NONREMOVABLE,
which is defined to mean that the card is *really* nonremovable. This
could be revisited in future if we find a way to improve
CONFIG_MMC_UNSAFE_RESUME semantics.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Acked-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
[stable@: please apply to 3.3-stable]
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 20:44:25 -04:00
Seungwon Jeon
a99aa9b9b4 mmc: dw_mmc: Fix switch from DMA to PIO
When dw_mci_pre_dma_transfer returns failure in some reasons,
dw_mci_submit_data will prepare to switch the PIO mode from DMA.
After switching to PIO mode, DMA(IDMAC in particular) is still
enabled. This makes the corruption in handling interrupt and
the driver lock-up.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 20:30:37 -04:00
Chuanxiao Dong
32d317c60e mmc: remove MMC bus legacy suspend/resume method
MMC bus is using legacy suspend/resume method, which is not compatible if
runtime pm callbacks are used. In this scenario, MMC bus suspend/resume
callbacks cannot be called when system entering S3. So change to use the
new defined dev_pm_ops for system sleeping mode.

Tested on AM335x Platform. Solves major issue/crash reported at
http://www.mail-archive.com/linux-omap@vger.kernel.org/msg65425.html

Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Tested-by: Hebbar, Gururaja <gururaja.hebbar@ti.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Ulf Hansson <ulf.hansson@stericsson.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 20:30:19 -04:00
Rajendra Nayak
4d048f915f mmc: omap_hsmmc: Get rid of of_have_populated_dt() usage
of_have_populated_dt() is not expected to be used in drivers but
instead only in early platform init code.
Drivers on the other hand should rely on dev->of_node or of_match_device().
Besides usage of of_have_populated_dt() also throws up build error as below
which was reported by Balaji TK, when omap_hsmmc is built as a module.

ERROR: "allnodes" [drivers/mmc/host/omap_hsmmc.ko] undefined!
make[1]: *** [__modpost] Error 1
make: *** [modules] Error 2

So get rid of all of_have_populated_dt() usage in omap_hsmmc driver and
instead use dev->of_node to make the same dicisions as earlier.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Reported-by: Benoit Cousson <b-cousson@ti.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Reviewed-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 20:29:08 -04:00
Chris Ball
b6d085f6f5 mmc: omap_hsmmc: build fix for CONFIG_OF=y and CONFIG_MMC_OMAP_HS=m
Commit 46856a68dc ("mmc: omap_hsmmc: Convert hsmmc driver to use device tree")
introduced in 3.4-rc1 has a missing semi-colon, causing:

drivers/mmc/host/omap_hsmmc.c:1745: error: expected ',' or ';' before 'extern'

Reported-by: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 20:29:05 -04:00
Adrian Hunter
283028122d mmc: fixes for eMMC v4.5 sanitize operation
eMMC v4.5 sanitize operation erases all copies of unmapped
data.  However trim or erase operations must be used first
to unmap the required sectors.  That was not being done.

Fixes apply to linux 3.2 on.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: <stable@vger.kernel.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 20:28:58 -04:00
Adrian Hunter
7194efb8f0 mmc: fixes for eMMC v4.5 discard operation
eMMC v4.5 discard operation is significantly different from the
existing trim operation because it is not guaranteed to work with
the new sanitize operation.  Consequently mmc_can_trim() is
separated from mmc_can_discard().

Also the new discard operation does not result in the sectors being
set to all-zeros, so discard_zeroes_data must not be set.

In addition, the new discard has the same timeout as trim, but from
v4.5 trim is defined to use the hc timeout.  The timeout calculation
is adjusted accordingly.

Fixes apply to linux 3.2 on.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: <stable@vger.kernel.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 20:28:55 -04:00
Shawn Guo
d04525ed03 dma: mxs-dma: enable channel in device_issue_pending call
Enable channel in device_issue_pending call, so that the order between
cookie assignment and channel enabling can be ensured naturally.

It fixes the mxs gpmi-nand breakage which is caused by the incorrect
order of cookie assigning and channel enabling.

Suggested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Huang Shijie <b32955@freescale.com>
Tested-by <samgandhi9@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-04-20 15:35:58 +05:30
Stephen Warren
3e215d0a19 gpio: tegra: Hide tegra_gpio_enable/disable()
Recent pinctrl discussions concluded that gpiolib APIs should in fact do
whatever is required to mux a GPIO onto pins, by calling pinctrl APIs if
required. This change implements this for the Tegra GPIO driver, and removes
calls to the Tegra-specific APIs from drivers and board files.

Cc: Chris Ball <cjb@laptop.org>
Cc: linux-mmc@vger.kernel.org
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Chris Ball <cjb@laptop.org> # for sdhci-tegra.c
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
2012-04-18 10:26:38 -06:00
Paul Walmsley
3bdc9ba892 mmc: use really long write timeout to deal with crappy cards
Several people have noticed that crappy SD cards take much longer to
complete multiple block writes than the 300ms that Linux specifies.
Try to work around this by using a three second write timeout instead.

This is a generalized version of a patch from Chase Maupin
<Chase.Maupin@ti.com>, whose patch description said:

* With certain SD cards timeouts like the following have been seen
  due to an improper calculation of the dto value:
    mmcblk0: error -110 transferring data, sector 4126233, nr 8,
    card status 0xc00
* By removing the dto calculation and setting the timeout value
  to the maximum specified by the SD card specification part A2
  section 2.2.15 these timeouts can be avoided.
* This change has been used by beagleboard users as well as the
  Texas Instruments SDK without a negative impact.
* There are multiple discussion threads about this but the most
  relevant ones are:
    * http://talk.maemo.org/showthread.php?p=1000707#post1000707
    * http://www.mail-archive.com/linux-omap@vger.kernel.org/msg42213.html
* Original proposal for this fix was done by Sukumar Ghoral of
  Texas Instruments
* Tested using a Texas Instruments AM335x EVM

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:34 -04:00
Alf Høgemark
8c2fc8e413 mmc: sdhci-dove: Fix compile error by including module.h
This patch fixes a compile error in drivers/mmc/host/sdhci-dove.c
by including the linux/module.h file.

Signed-off-by: Alf Høgemark <alf@i100.no>
Cc: <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:33 -04:00
Al Cooper
4188bba0e9 mmc: Prevent 1.8V switch for SD hosts that don't support UHS modes.
The driver should not try to switch to 1.8V when the SD 3.0 host
controller does not have any UHS capabilities bits set (SDR50, DDR50
or SDR104). See page 72 of "SD Specifications Part A2 SD Host
Controller Simplified Specification Version 3.00" under
"1.8V Signaling Enable". Instead of setting SDR12 and SDR25 in the host
capabilities data structure for all V3.0 host controllers, only set them
if SDR104, SDR50 or DDR50 is set in the host capabilities register. This
will prevent the switch to 1.8V later.

Signed-off-by: Al Cooper <acooper@gmail.com>
Acked-by: Arindam Nath <arindam.nath@amd.com>
Acked-by: Philip Rakity <prakity@marvell.com>
Acked-by: Girish K S <girish.shivananjappa@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:32 -04:00
Chris Ball
79263f33b0 Revert "mmc: sdhci-pci: Add MSI support"
This reverts commit e6039832be.
There are reports of MSI breaking SDHCI on multiple chipsets (JMicron
and O2Micro, at least), so this should be reverted until we come up
with a whitelist or something.

Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:32 -04:00
Chris Ball
84e41d2d56 Revert "mmc: sdhci-pci: add quirks for broken MSI on O2Micro controllers"
This reverts commit c16e981b2fd9455af670a69a84f4c8cf07e12658, because
it's no longer useful once MSI support is reverted.

Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:31 -04:00
Subhash Jadavani
93fc5a47f2 mmc: core: fix power class selection
mmc_select_powerclass() function returns error if eMMC
VDD level supported by host is between 2.7v to 3.2v.

According to eMMC specification, valid voltage for high
voltage cards is 2.7v to 3.6v. This patch ensures that
2.7v to 3.6v VDD range is treated as valid range.

Also, failure to set the power class shouldn't be treated
as fatal error because even if setting the power class
fails, card can still work in default power class.
If mmc_select_powerclass() returns error, just print
the warning message and go ahead with rest of the card
initialization.

Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Acked-by: Girish K S <girish.shivananjappa@linaro.org>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:31 -04:00
Balaji T K
fc307df88f mmc: omap_hsmmc: fix module re-insertion
OMAP4 and OMAP3 HSMMC IP registers differ by 0x100 offset.
Adding the offset to platform_device resource structure
increments the start address for every insmod operation.
MMC command fails on re-insertion as module due to incorrect register
base.  Fix this by updating the ioremap base address only.

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:30 -04:00
Felipe Balbi
b796450b45 mmc: omap_hsmmc: convert to module_platform_driver
This will delete some boilerplate code, no functional changes.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:29 -04:00
Felipe Balbi
efa25fd3a3 mmc: omap_hsmmc: make it behave well as a module
If we put probe() on __init section, that will never work for multiple
module insertions/removals.

In order to make it work properly, move probe to __devinit section and
use platform_driver_register() instead of platform_driver_probe().

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:29 -04:00
Felipe Balbi
927ce944ae mmc: omap_hsmmc: trivial cleanups
A bunch of non-functional cleanups to the omap_hsmmc driver.

It basically decreases indentation level, drop unneded dereferences
and drop unneded accesses to the platform_device structure.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:28 -04:00
Balaji T K
92a3aebf06 mmc: omap_hsmmc: context save after enabling runtime pm
Call context save api after enabling runtime pm to make sure that
register access in context save api happens with clk enabled.

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:27 -04:00
Balaji T K
d59d77ed1e mmc: omap_hsmmc: use runtime put sync in probe error patch
pm_runtime_put_sync instead of autosuspend pm runtime API
because iounmap(host->base) follows immediately.

Reported-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:27 -04:00
Rafael J. Wysocki
e841a7c69b mmc: sdio: Use empty system suspend/resume callbacks at the bus level
Neil Brown reports that commit 35cd133c

   PM: Run the driver callback directly if the subsystem one is not there

breaks suspend for his libertas wifi, because SDIO has a protocol
where the suspend method can return -ENOSYS and this means "There is
no point in suspending, just turn me off".  Moreover, the suspend
methods provided by SDIO drivers are not supposed to be called by
the PM core or bus-level suspend routines (which aren't presend for
SDIO).  Instead, when the SDIO core gets to suspend the device's
ancestor, it calls the device driver's suspend function, catches the
ENOSYS, and turns the device off.

The commit above breaks the SDIO core's assumption that the device
drivers' callbacks won't be executed if it doesn't provide any
bus-level callbacks.  If fact, however, this assumption has never
been really satisfied, because device class or device type suspend
might very well use the driver's callback even without that commit.

The simplest way to address this problem is to make the SDIO core
tell the PM core to ignore driver callbacks, for example by providing
no-operation suspend/resume callbacks at the bus level for it,
which is implemented by this change.

Reported-and-tested-by: Neil Brown <neilb@suse.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
[stable: please apply to 3.3-stable only]
Cc: <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:26 -04:00
Subhash Jadavani
6500c8ed95 mmc: bus: print bus speed mode of UHS-I card
When UHS-I card is detected also print the bus speed mode in which
UHS-I card will be running.

Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Acked-by: Aaron Lu <aaron.lu@amd.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:26 -04:00
Manuel Lauss
210b7d2859 mmc: sdhci-pci: add quirks for broken MSI on O2Micro controllers
MSI on my O2Micro OZ600 SD card reader is broken.  This patch adds a quirk
to disable MSI on these controllers.

Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:25 -04:00
Simon Horman
eb91b9118d mmc: sh_mmcif: Simplify calculation of mmc->f_min
There is no need to tune mmc->f_min to a value near 400kHz as the MMC core
begins testing frequencies at 400kHz regardless of the value of mmc->f_min.

As suggested by Guennadi Liakhovetski.

Cc: Magnus Damm <magnus.damm@gmail.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Tested-by: Cao Minh Hiep <hiepcm@gmail.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:24 -04:00
Simon Horman
930f152cc9 mmc: sh_mmcif: mmc->f_max should be half of the bus clock
mmc->f_max should be half of the bus clock.
And now that mmc->f_max is not equal to the bus clock the
latter should be used directly to calculate mmc->f_min.

Cc: Magnus Damm <magnus.damm@gmail.com>
Tested-by: Cao Minh Hiep <hiepcm@gmail.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:24 -04:00
Simon Horman
f938825704 mmc: sh_mmcif: double clock speed
Correct an off-by one error when calculating the clock divisor in cases
where the host clock is a power of two of the target clock.  Previously the
divisor was one greater than the correct value in these cases leading to
the clock being set at half the desired speed.

Thanks to Guennadi Liakhovetski for working with me on the logic for this
change.

Tested-by: Cao Minh Hiep <hiepcm@gmail.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:23 -04:00
Ulf Hansson
5865f2876b mmc: block: Remove use of mmc_blk_set_blksize
According to the specifications for SD and (e)MMC default
blocksize (named BLOCKLEN in Spec.) must always be 512
bytes. Since we hardcoded to always use 512 bytes, we do
not explicitly have to set it. Future improvements should
potentially make it possible to use a greater blocksize
than 512 bytes, but until then let's skip this.

Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com>
Reviewed-by: Subhash Jadavani <subhashj@codeauora.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:22 -04:00
Ludovic Desroches
faf8180b20 mmc: atmel-mci: add support for odd clock dividers
Add an odd clock divider capability available from v5xx. It also involves
changing the clock divider calculation, and changing the switch-case
statement to use top-down fallthrough.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:22 -04:00
Ludovic Desroches
33ab4bbbdf mmc: atmel-mci: r/w proof capability only available since v2xx
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:21 -04:00
Ludovic Desroches
66292ad92c mmc: atmel-mci: correct data timeout computation
The HSMCI operates at a rate of up to Master Clock divided by two.
Moreover previous calculation can cause overflows and so wrong
timeouts.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:21 -04:00
Mark Brown
9f4e8151db mmc: sdhci-s3c: Enable runtime power management
Since most of the work is already done by the core we just need to add
runtime suspend methods and tell the PM core that runtime PM is enabled
for this device.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:20 -04:00
Mark Brown
d5e9c02cab mmc: sdhci-s3c: Use CONFIG_PM_SLEEP to ifdef system suspend
This matches current best practice as one can have runtime PM enabled
without system sleep and CONFIG_PM is defined for both.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:19 -04:00
Julia Lawall
9bda6da7ff mmc: sdhci-s3c: use devm_ functions
The various devm_ functions allocate memory that is released when a driver
detaches.  This patch uses these functions for data that is allocated in
the probe function of a platform device and is only freed in the remove
function.

By using devm_ioremap, it also removes a potential memory leak, because
there was no call to iounmap in the probe function.

The call to platform_get_resource was moved just to make it closer to the
place where its result it used.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:16 -04:00
Thomas Abraham
1d4dc338bb mmc: sdhci-s3c: Keep a copy of platform data and use it
The platform data is copied into driver's private data and the copy is
used for all access to the platform data. This simpifies the addition
of device tree support for the sdhci-s3c driver.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 19:58:01 -04:00
Thomas Abraham
0d22c77089 mmc: sdhci-s3c: derive transfer width host cap from max_width in platdata
max_width member in platform data can be used to derive the mmc bus transfer
width that can be supported by the controller.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 19:57:58 -04:00
Thomas Abraham
3119936a28 mmc: sdhci-s3c: Remove usage of clk_type member in platform data
SDHCI controllers on Exynos4 do not include the sdclk divider as per the
sdhci controller specification. This case can be represented using the
sdhci quirk SDHCI_QUIRK_NONSTANDARD_CLOCK instead of using an additional
enum type definition 'clk_types'.

Hence, usage of clk_type member in platform data is removed and the sdhci
quirk is used. In addition to that, since this qurik is SoC specific,
driver data is introduced to represent controllers on SoC's that require
this quirk.

Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Jeongbae Seo <jeongbae.seo@samsung.com>
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 19:57:49 -04:00
Linus Torvalds
623ff7739e MTD merge for 3.4
Artem's cleanup of the MTD API continues apace.
 Fixes and improvements for ST FSMC and SuperH FLCTL NAND, amongst others.
 More work on DiskOnChip G3, new driver for DiskOnChip G4.
 Clean up debug/warning printks in JFFS2 to use pr_<level>.
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Merge tag 'for-linus-3.4' of git://git.infradead.org/mtd-2.6

Pull MTD changes from David Woodhouse:
 - Artem's cleanup of the MTD API continues apace.
 - Fixes and improvements for ST FSMC and SuperH FLCTL NAND, amongst
   others.
 - More work on DiskOnChip G3, new driver for DiskOnChip G4.
 - Clean up debug/warning printks in JFFS2 to use pr_<level>.

Fix up various trivial conflicts, largely due to changes in calling
conventions for things like dmaengine_prep_slave_sg() (new inline
wrapper to hide new parameter, clashing with rewrite of previously last
parameter that used to be an 'append' flag, and is now a bitmap of
'unsigned long flags').

(Also some header file fallout - like so many merges this merge window -
and silly conflicts with sparse fixes)

* tag 'for-linus-3.4' of git://git.infradead.org/mtd-2.6: (120 commits)
  mtd: docg3 add protection against concurrency
  mtd: docg3 refactor cascade floors structure
  mtd: docg3 increase write/erase timeout
  mtd: docg3 fix inbound calculations
  mtd: nand: gpmi: fix function annotations
  mtd: phram: fix section mismatch for phram_setup
  mtd: unify initialization of erase_info->fail_addr
  mtd: support ONFI multi lun NAND
  mtd: sm_ftl: fix typo in major number.
  mtd: add device-tree support to spear_smi
  mtd: spear_smi: Remove default partition information from driver
  mtd: Add device-tree support to fsmc_nand
  mtd: fix section mismatch for doc_probe_device
  mtd: nand/fsmc: Remove sparse warnings and errors
  mtd: nand/fsmc: Add DMA support
  mtd: nand/fsmc: Access the NAND device word by word whenever possible
  mtd: nand/fsmc: Use dev_err to report error scenario
  mtd: nand/fsmc: Use devm routines
  mtd: nand/fsmc: Modify fsmc driver to accept nand timing parameters via platform
  mtd: fsmc_nand: add pm callbacks to support hibernation
  ...
2012-03-30 17:31:56 -07:00
Linus Torvalds
ef08e78268 Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine update from Vinod Koul:
 "This includes the cookie cleanup by Russell, the addition of context
  parameter for dmaengine APIs, more arm dmaengine driver cleanup by
  moving code to dmaengine, this time for imx by Javier and pl330 by
  Boojin along with the usual driver fixes."

Fix up some fairly trivial conflicts with various other cleanups.

* 'next' of git://git.infradead.org/users/vkoul/slave-dma: (67 commits)
  dmaengine: imx: fix the build failure on x86_64
  dmaengine: i.MX: Fix merge of cookie branch.
  dmaengine: i.MX: Add support for interleaved transfers.
  dmaengine: imx-dma: use 'dev_dbg' and 'dev_warn' for messages.
  dmaengine: imx-dma: remove 'imx_dmav1_baseaddr' and 'dma_clk'.
  dmaengine: imx-dma: remove unused arg of imxdma_sg_next.
  dmaengine: imx-dma: remove internal structure.
  dmaengine: imx-dma: remove 'resbytes' field of 'internal' structure.
  dmaengine: imx-dma: remove 'in_use' field of 'internal' structure.
  dmaengine: imx-dma: remove sg member from internal structure.
  dmaengine: imx-dma: remove 'imxdma_setup_sg_hw' function.
  dmaengine: imx-dma: remove 'imxdma_config_channel_hw' function.
  dmaengine: imx-dma: remove 'imxdma_setup_mem2mem_hw' function.
  dmaengine: imx-dma: remove dma_mode member of internal structure.
  dmaengine: imx-dma: remove data member from internal structure.
  dmaengine: imx-dma: merge old dma-v1.c with imx-dma.c
  dmaengine: at_hdmac: add slave config operation
  dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic
  dmaengine/dma_slave: introduce inline wrappers
  dma: imx-sdma: Treat firmware messages as warnings instead of erros
  ...
2012-03-29 15:34:57 -07:00
Linus Torvalds
b5174fa3a7 MMC highlights for 3.4:
Core:
  * Support for MMC 4.5 Data Tag feature -- we tag REQ_META, so devices
    that support Data Tag will provide increased throughput for metadata.
  * Faster detection of card removal on I/O errors.
 
 Drivers:
  * dw_mmc now supports eMMC Power Off Notify, has PCI support, and
    implements pre_req and post_req for asynchronous requests.
  * omap_hsmmc now supports device tree.
  * esdhc now has power management support.
  * sdhci-tegra now supports Tegra30 devices.
  * sdhci-spear now supports hibernation.
  * tmio_mmc now supports using a GPIO for card detection.
  * Intel PCH now supports 8-bit bus transfers.
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Merge tag 'mmc-merge-for-3.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc

Pull MMC updates from Chris Ball:

Core:
 * Support for MMC 4.5 Data Tag feature -- we tag REQ_META, so devices
   that support Data Tag will provide increased throughput for metadata.
 * Faster detection of card removal on I/O errors.

Drivers:
 * dw_mmc now supports eMMC Power Off Notify, has PCI support, and
   implements pre_req and post_req for asynchronous requests.
 * omap_hsmmc now supports device tree.
 * esdhc now has power management support.
 * sdhci-tegra now supports Tegra30 devices.
 * sdhci-spear now supports hibernation.
 * tmio_mmc now supports using a GPIO for card detection.
 * Intel PCH now supports 8-bit bus transfers.

* tag 'mmc-merge-for-3.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (53 commits)
  mmc: sh_mmcif: simplify bitmask macros
  mmc: sh_mobile_sdhi: support modular mmc-core with non-standard hotplug
  mmc: sh_mobile_sdhi: add a callback for board specific init code
  mmc: tmio: cosmetic: prettify the tmio_mmc_set_ios() function
  mmc: sh_mobile_sdhi: do not manage PM clocks manually
  mmc: tmio_mmc: remove unused sdio_irq_enabled flag
  mmc: tmio_mmc: power status flag doesn't have to be exposed in platform data
  mmc: sh_mobile_sdhi: pass card hotplug GPIO number to TMIO MMC
  mmc: tmio_mmc: support the generic MMC GPIO card hotplug helper
  mmc: tmio: calculate the native hotplug condition only once
  mmc: simplify mmc_cd_gpio_request() by removing two parameters
  mmc: sdhci-pci: allow 8-bit bus width for Intel PCH
  mmc: sdhci: check interrupt flags in ISR again
  mmc: sdhci-pci: Add MSI support
  mmc: core: warn when card doesn't support HPI
  mmc: davinci: Poll status for small size transfers
  mmc: davinci: Eliminate spurious interrupts
  mmc: omap_hsmmc: Avoid a regulator voltage change with dt
  mmc: omap_hsmmc: Convert hsmmc driver to use device tree
  mmc: sdhci-pci: add SDHCI_QUIRK2_HOST_OFF_CARD_ON for Medfield SDIO
  ...
2012-03-28 20:59:45 -07:00
Linus Torvalds
0195c00244 Disintegrate and delete asm/system.h
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Merge tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system

Pull "Disintegrate and delete asm/system.h" from David Howells:
 "Here are a bunch of patches to disintegrate asm/system.h into a set of
  separate bits to relieve the problem of circular inclusion
  dependencies.

  I've built all the working defconfigs from all the arches that I can
  and made sure that they don't break.

  The reason for these patches is that I recently encountered a circular
  dependency problem that came about when I produced some patches to
  optimise get_order() by rewriting it to use ilog2().

  This uses bitops - and on the SH arch asm/bitops.h drags in
  asm-generic/get_order.h by a circuituous route involving asm/system.h.

  The main difficulty seems to be asm/system.h.  It holds a number of
  low level bits with no/few dependencies that are commonly used (eg.
  memory barriers) and a number of bits with more dependencies that
  aren't used in many places (eg.  switch_to()).

  These patches break asm/system.h up into the following core pieces:

    (1) asm/barrier.h

        Move memory barriers here.  This already done for MIPS and Alpha.

    (2) asm/switch_to.h

        Move switch_to() and related stuff here.

    (3) asm/exec.h

        Move arch_align_stack() here.  Other process execution related bits
        could perhaps go here from asm/processor.h.

    (4) asm/cmpxchg.h

        Move xchg() and cmpxchg() here as they're full word atomic ops and
        frequently used by atomic_xchg() and atomic_cmpxchg().

    (5) asm/bug.h

        Move die() and related bits.

    (6) asm/auxvec.h

        Move AT_VECTOR_SIZE_ARCH here.

  Other arch headers are created as needed on a per-arch basis."

Fixed up some conflicts from other header file cleanups and moving code
around that has happened in the meantime, so David's testing is somewhat
weakened by that.  We'll find out anything that got broken and fix it..

* tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system: (38 commits)
  Delete all instances of asm/system.h
  Remove all #inclusions of asm/system.h
  Add #includes needed to permit the removal of asm/system.h
  Move all declarations of free_initmem() to linux/mm.h
  Disintegrate asm/system.h for OpenRISC
  Split arch_align_stack() out from asm-generic/system.h
  Split the switch_to() wrapper out of asm-generic/system.h
  Move the asm-generic/system.h xchg() implementation to asm-generic/cmpxchg.h
  Create asm-generic/barrier.h
  Make asm-generic/cmpxchg.h #include asm-generic/cmpxchg-local.h
  Disintegrate asm/system.h for Xtensa
  Disintegrate asm/system.h for Unicore32 [based on ver #3, changed by gxt]
  Disintegrate asm/system.h for Tile
  Disintegrate asm/system.h for Sparc
  Disintegrate asm/system.h for SH
  Disintegrate asm/system.h for Score
  Disintegrate asm/system.h for S390
  Disintegrate asm/system.h for PowerPC
  Disintegrate asm/system.h for PA-RISC
  Disintegrate asm/system.h for MN10300
  ...
2012-03-28 15:58:21 -07:00
David Howells
9ffc93f203 Remove all #inclusions of asm/system.h
Remove all #inclusions of asm/system.h preparatory to splitting and killing
it.  Performed with the following command:

perl -p -i -e 's!^#\s*include\s*<asm/system[.]h>.*\n!!' `grep -Irl '^#\s*include\s*<asm/system[.]h>' *`

Signed-off-by: David Howells <dhowells@redhat.com>
2012-03-28 18:30:03 +01:00
Linus Torvalds
34800598b2 ARM: driver specific updates
These are all specific to some driver. They are typically the platform
 side of a change in the drivers directory, such as adding a new driver
 or extending the interface to the platform. In cases where there is no
 maintainer for the driver, or the maintainer prefers to have the
 platform changes in the same branch as the driver changes, the patches
 to the drivers are included as well.
 
 A much smaller set of driver updates that depend on other branches
 getting merged first will be sent later.
 
 The new export of tegra_chip_uid conflicts with other changes in fuse.c.
 In rtc-sa1100.c, the global removal of IRQF_DISABLED conflicts with
 the cleanup of the interrupt handling of that driver.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull "ARM: driver specific updates" from Arnd Bergmann:
 "These are all specific to some driver.  They are typically the
  platform side of a change in the drivers directory, such as adding a
  new driver or extending the interface to the platform.  In cases where
  there is no maintainer for the driver, or the maintainer prefers to
  have the platform changes in the same branch as the driver changes,
  the patches to the drivers are included as well.

  A much smaller set of driver updates that depend on other branches
  getting merged first will be sent later.

  The new export of tegra_chip_uid conflicts with other changes in
  fuse.c.  In rtc-sa1100.c, the global removal of IRQF_DISABLED
  conflicts with the cleanup of the interrupt handling of that driver.

  Signed-off-by: Arnd Bergmann <arnd@arndb.de>"

Fixed up aforementioned trivial conflicts.

* tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (94 commits)
  ARM: SAMSUNG: change the name from s3c-sdhci to exynos4-sdhci
  mmc: sdhci-s3c: add platform data for the second capability
  ARM: SAMSUNG: support the second capability for samsung-soc
  ARM: EXYNOS: add support DMA for EXYNOS4X12 SoC
  ARM: EXYNOS: Add apb_pclk clkdev entry for mdma1
  ARM: EXYNOS: Enable MDMA driver
  regulator: Remove bq24022 regulator driver
  rtc: sa1100: add OF support
  pxa: magician/hx4700: Convert to gpio-regulator from bq24022
  ARM: OMAP3+: SmartReflex: fix error handling
  ARM: OMAP3+: SmartReflex: fix the use of debugfs_create_* API
  ARM: OMAP3+: SmartReflex: micro-optimization for sanity check
  ARM: OMAP3+: SmartReflex: misc cleanups
  ARM: OMAP3+: SmartReflex: move late_initcall() closer to its argument
  ARM: OMAP3+: SmartReflex: add missing platform_set_drvdata()
  ARM: OMAP3+: hwmod: add SmartReflex IRQs
  ARM: OMAP3+: SmartReflex: clear ERRCONFIG_VPBOUNDINTST only on a need
  ARM: OMAP3+: SmartReflex: Fix status masking in ERRCONFIG register
  ARM: OMAP3+: SmartReflex: Add a shutdown hook
  ARM: OMAP3+: SmartReflex Class3: disable errorgen before disable VP
  ...

Conflicts:
	arch/arm/mach-tegra/Makefile
	arch/arm/mach-tegra/fuse.c
	drivers/rtc/rtc-sa1100.c
2012-03-27 16:41:24 -07:00
Linus Torvalds
d61b7a572b ARM: global cleanups
Quite a bit of code gets removed, and some stuff moved around, mostly
 the old samsung s3c24xx stuff. There should be no functional changes
 in this series otherwise. Some cleanups have dependencies on other
 arm-soc branches and will be sent in the second round.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull "ARM: global cleanups" from Arnd Bergmann:
 "Quite a bit of code gets removed, and some stuff moved around, mostly
  the old samsung s3c24xx stuff.  There should be no functional changes
  in this series otherwise.  Some cleanups have dependencies on other
  arm-soc branches and will be sent in the second round.

  Signed-off-by: Arnd Bergmann <arnd@arndb.de>"

Fixed up trivial conflicts mainly due to #include's being changes on
both sides.

* tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (121 commits)
  ep93xx: Remove unnecessary includes of ep93xx-regs.h
  ep93xx: Move EP93XX_SYSCON defines to SoC private header
  ep93xx: Move crunch code to mach-ep93xx directory
  ep93xx: Make syscon access functions private to SoC
  ep93xx: Configure GPIO ports in core code
  ep93xx: Move peripheral defines to local SoC header
  ep93xx: Convert the watchdog driver into a platform device.
  ep93xx: Use ioremap for backlight driver
  ep93xx: Move GPIO defines to gpio-ep93xx.h
  ep93xx: Don't use system controller defines in audio drivers
  ep93xx: Move PHYS_BASE defines to local SoC header file
  ARM: EXYNOS: Add clock register addresses for EXYNOS4X12 bus devfreq driver
  ARM: EXYNOS: add clock registers for exynos4x12-cpufreq
  PM / devfreq: update the name of EXYNOS clock registers that were omitted
  PM / devfreq: update the name of EXYNOS clock register
  ARM: EXYNOS: change the prefix S5P_ to EXYNOS4_ for clock
  ARM: EXYNOS: use static declaration on regarding clock
  ARM: EXYNOS: replace clock.c for other new EXYNOS SoCs
  ARM: OMAP2+: Fix build error after merge
  ARM: S3C24XX: remove call to s3c24xx_setup_clocks
  ...
2012-03-27 16:03:32 -07:00
Guennadi Liakhovetski
7f52421743 mmc: sh_mobile_sdhi: support modular mmc-core with non-standard hotplug
Currently if a platform wants to implement a non-standard card-detection
method, it would need to call tmio_mmc_cd_wakeup(), which is an inline
function, calling mmc_detect_change(). For this the platform would have
to link mmc_core statically into the kernel, losing the ability to build
it as a module. This patch adds a callback to the sh_mobile_sdhi driver,
which eliminates this dependency.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-03-27 12:20:19 -04:00
Bastian Hecht
e82b4ac94e mmc: sh_mobile_sdhi: add a callback for board specific init code
Some boards need a preliminary setup stage to prepare the sdhi
controller.

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-03-27 12:20:19 -04:00
Guennadi Liakhovetski
4932bd64a2 mmc: tmio: cosmetic: prettify the tmio_mmc_set_ios() function
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-03-27 12:20:18 -04:00
Guennadi Liakhovetski
996bc8aebd mmc: sh_mobile_sdhi: do not manage PM clocks manually
On sh-mobile platforms the MMC clock frequency for the TMIO MMC unit is
obtained from the same clock, as the one, that runtime power-manages the
controller. The SDHI glue code has to access that clock directly,
bypassing the runtime PM framework, to get its frequency, but it
shouldn't enable or disable it.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-03-27 12:20:18 -04:00
Guennadi Liakhovetski
5bd99c375e mmc: tmio_mmc: remove unused sdio_irq_enabled flag
The sdio_irq_enabled member of struct tmio_mmc_host is a left-over from the
previously removed SDIO IRQ workaround. It is no longer needed and can now
be removed too.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-03-27 12:20:17 -04:00
Guennadi Liakhovetski
c391e1b9eb mmc: tmio_mmc: power status flag doesn't have to be exposed in platform data
The controller power status flag does not have to be accessed from the
hot-plug detection code any more, it can now be removed from the platform
data and put in the controller private struct.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-03-27 12:20:16 -04:00
Guennadi Liakhovetski
58126c878b mmc: sh_mobile_sdhi: pass card hotplug GPIO number to TMIO MMC
To use TMIO MMC driver ability to interface to the generic MMC GPIO card
hotplug detection helper, the SDHI driver has to pass the GPIO number
from its own platform data.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-03-27 12:20:16 -04:00
Guennadi Liakhovetski
c8be24c2af mmc: tmio_mmc: support the generic MMC GPIO card hotplug helper
If the platform specifies the TMIO_MMC_HAS_COLD_CD flag, use the generic
MMC GPIO card hotplug helper.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-03-27 12:20:15 -04:00
Guennadi Liakhovetski
2b1ac5c2ca mmc: tmio: calculate the native hotplug condition only once
The condition, whether we have to use the native TMIO card hotplug
detection interrupt, is rather complex, it is better to only calculate it
once and store in the private data.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-03-27 12:20:15 -04:00
Guennadi Liakhovetski
c9b0546a59 mmc: simplify mmc_cd_gpio_request() by removing two parameters
Calculate the IRQ number, using gpio_to_irq() and use fixed flags: trigger
on both edges. This makes two out of four arguments of the
mmc_cd_gpio_request() function redundant.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-03-27 12:20:14 -04:00
Alexander Stein
296e0b0357 mmc: sdhci-pci: allow 8-bit bus width for Intel PCH
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-03-27 12:20:14 -04:00
Alexander Stein
6379b2375a mmc: sdhci: check interrupt flags in ISR again
When using MSI it is possible that a new MSI is sent while an earlier
MSI is currently handled. In this case SDHCI_INT_STATUS only contains
SDHCI_INT_RESPONSE and the ISR would not be called again. But at the end
of the ISR SDHCI_INT_DATA_END is now also pending which would be ignored.

Fix this by rereading the interrupt flags in the ISR until no interrupt
we care is pending.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-03-27 12:20:13 -04:00
Alexander Stein
e6039832be mmc: sdhci-pci: Add MSI support
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-03-27 12:20:12 -04:00