Jon Mason [Fri, 14 Oct 2011 19:56:14 +0000 (14:56 -0500)]
PCI: enable MPS "performance" setting to properly handle bridge MPS
Rework the "performance" MPS option to configure the device MPS with the
smaller of the device MPSS or the bridge MPS (which is assumed to be
properly configured at this point to the largest allowable MPS based on
its parent bus).
Also, rework the MRRS setting to report an inability to set the MRRS to
a valid setting.
Signed-off-by: Jon Mason <mason@myri.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Jon Mason [Fri, 14 Oct 2011 19:56:13 +0000 (14:56 -0500)]
PCI: Workaround for Intel MPS errata
Intel 5000 and 5100 series memory controllers have a known issue if read
completion coalescing is enabled and the PCI-E Maximum Payload Size is
set to 256B. To work around this issue, disable read completion
coalescing in the memory controller and root complexes. Unfortunately,
it must always be disabled, even if no 256B MPS devices are present, due
to the possibility of one being hotplugged.
Links to erratas:
http://www.intel.com/content/dam/doc/specification-update/5000-chipset-memory-controller-hub-specification-update.pdf
http://www.intel.com/content/dam/doc/specification-update/5100-memory-controller-hub-chipset-specification-update.pdf
Thanks to Jesse Brandeburg and Ben Hutchings for providing insight into
the problem.
Tested-and-Reported-by: Avi Kivity <avi@redhat.com> Signed-off-by: Jon Mason <mason@myri.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Takashi Iwai [Fri, 14 Oct 2011 13:26:20 +0000 (15:26 +0200)]
ALSA: hda - Fix ADC input-amp handling for Cx20549 codec
It seems that Conexant CX20549 chip handle only a single input-amp even
though the audio-input widget has multiple sources. This has been never
clear, and I implemented in the current way based on the debug information
I got at the early time -- the device reacts individual input-amp values
for different sources. This is true for another Conexant codec, but it's
not applied to CX20549 actually.
This patch changes the auto-parser code to handle a single input-amp
per audio-in widget for CX20549. After applying this, you'll see only a
single "Capture" volume control instead of separate "Mic" or "Line"
captures when the device is set up to use a single ADC.
We haven't tested 20551 and 20561 codecs yet. If these show the similar
behavior like 20549, they need to set spec->single_adc_amp=1, too.
Takashi Iwai [Fri, 14 Oct 2011 13:22:34 +0000 (15:22 +0200)]
ALSA: hda - Keep EAPD turned on for old Conexant chips
In the old Conexant chips (5045, 5047, 5051 and 5066), a single EAPD
may handle both headphone and speaker outputs while it's assigned only
to one of them. Turning off dynamically leads to the unexpected silent
output in such a configuration with the auto-mute function.
Since it's difficult to know how the EAPD is handled in the actual h/w
implementation, better to keep EAPD on while running for such codecs.
Takashi Iwai [Thu, 27 Oct 2011 14:33:27 +0000 (16:33 +0200)]
ALSA: hda/realtek - Fix missing volume controls with ALC260
ALC260 has multiple mixer widgets connected to the shared DAC, but the
driver currently doesn't check this possibility and ignores when the DAC
is shared with others. This resulted in the silent output from some
routes because of lack of the amp setup.
This patch adds the workaround for it by checking the route even with the
shared DAC, but also checking the conflict with the existing control for
the very same widget NID.
Namjae Jeon [Wed, 12 Oct 2011 15:43:14 +0000 (00:43 +0900)]
mmc: fix compile error when CONFIG_BLOCK is not enabled
'DISK_NAME_LEN' is undeclared when CONFIG_BLOCK is disabled; its use was
introduced via genhd.h by the general purpose partition patch.
To fix, we just add our own MAX_MMC_PART_NAME_LEN macro instead of using
DISK_NAME_LEN.
Reported-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Namjae Jeon <linkinjeon@gmail.com> Acked-by: Randy Dunlap <rdunlap@xenotime.net> Acked-by: Andrei Warkentin <andreiw@vmware.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Seungwon Jeon [Tue, 25 Oct 2011 00:43:12 +0000 (09:43 +0900)]
mmc: core: Cleanup eMMC4.5 conditionals
Code cleanup, putting all eMMC 4.5 detection cases together.
This patch removes one if-statement and assembles all. And it also
removes variable initialization below else-statement -- all members
of card structure are already set to zero at card-init.
Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Paul Walmsley [Thu, 6 Oct 2011 20:50:35 +0000 (14:50 -0600)]
mmc: omap_hsmmc: if multiblock reads are broken, disable them
When device data indicates that multiple block reads are not supported
on a given HSMMC controller instance, log a message to the console, and
pass the appropriate MMC capability flag to the MMC core.
Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Dave Hylands <dhylands@gmail.com> Tested-by: Steve Sakoman <sakoman@gmail.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Paul Walmsley [Thu, 6 Oct 2011 20:50:33 +0000 (14:50 -0600)]
mmc: core: add workaround for controllers with broken multiblock reads
Due to hardware bugs, some MMC host controllers don't support
multiple-block reads[1]. To resolve, add a new MMC capability flag,
MMC_CAP2_NO_MULTI_READ, which can be set by affected host controller
drivers. When this capability is set, all reads will be issued one
sector at a time.
1. See for example Advisory 2.1.1.128 "MMC: Multiple Block Read
Operation Issue" in _OMAP3530/3525/3515/3503 Silicon Errata_
Revision F (October 2010) (SPRZ278F), available from
http://focus.ti.com/lit/er/sprz278f/sprz278f.pdf
Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Dave Hylands <dhylands@gmail.com> Tested-by: Steve Sakoman <sakoman@gmail.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Axel Lin [Wed, 26 Oct 2011 01:53:41 +0000 (09:53 +0800)]
ASoC: wm8940: Properly set codec->dapm.bias_level
Reported-by: Chris Paulson-Ellis <chris@edesix.com> Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: stable@vger.kernel.org
Linus Torvalds [Thu, 27 Oct 2011 06:44:20 +0000 (08:44 +0200)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (68 commits)
Input: adp5589-keys - add support for the ADP5585 derivatives
Input: imx_keypad - add pm suspend and resume support
Input: force feedback - potential integer wrap in input_ff_create()
Input: tsc2007 - make sure that X plate resistance is specified
Input: serio_raw - fix memory leak when closing char device
Input: serio_raw - kick clients when disconnecting port
Input: serio_raw - explicitly mark disconnected ports as dead
Input: serio_raw - fix coding style issues
Input: serio_raw - use dev_*() for messages
Input: serio_raw - use bool for boolean data
Input: serio_raw - perform proper locking when adding clients to list
Input: serio_raw - rename serio_raw_list to serio_raw_client
Input: serio_raw - use kref instead of rolling out its own refcounting
Input: psmouse - switch to using dev_*() for messages
Input: wacom - correct max Y value on medium bamboos
Input: wacom - add ABS_DISTANCE to Bamboo Pen reports
Input: wacom - remove unneeded touch pressure initialization
Input: lm8323 - wrap suspend and resume in CONFIG_PM_SLEEP
Input: ad7879-i2c - wrap suspend and resume in CONFIG_PM_SLEEP
Input: synaptics_i2c - wrap suspend and resume in CONFIG_PM_SLEEP
...
Linus Torvalds [Thu, 27 Oct 2011 06:41:50 +0000 (08:41 +0200)]
Merge branch 'clk' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm
* 'clk' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm:
ARM: 7131/1: clkdev: Add Common Macro for clk_lookup
clk: spi-pl022: convert to clk_prepare()/clk_unprepare()
clk: timer-sp: convert to clk_prepare()/clk_unprepare()
clk: sa1111: convert to clk_prepare()/clk_unprepare()
clk: mmci: convert to clk_prepare()/clk_unprepare()
clk: amba-pl011: convert to clk_prepare()/clk_unprepare()
clk: amba-pl010: convert to clk_prepare()/clk_unprepare()
clk: amba-clcd: convert to clk_prepare()/clk_unprepare()
clk: amba bus: convert to clk_prepare()/clk_unprepare()
clk: provide prepare/unprepare functions
Linus Torvalds [Thu, 27 Oct 2011 06:40:50 +0000 (08:40 +0200)]
Merge branch 'amba' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm
* 'amba' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm:
ARM: 7079/1: spi: Fix builderror in spi-pl022.c
PM: add runtime PM support to MMCI
PM: add runtime PM support to core Primecell driver
Linus Torvalds [Thu, 27 Oct 2011 06:32:37 +0000 (08:32 +0200)]
Merge branch 'upstream-linus' of git://github.com/jgarzik/libata-dev
* 'upstream-linus' of git://github.com/jgarzik/libata-dev: (50 commits)
pata_efar: fix register naming used in efar_set_piomode()
pata_rdc: add Power Management support
ata_piix: unify code for programming PIO and MWDMA timings
ata_piix: SITRE handling fix
libata: make ata_sff_data_xfer_noirq() work with 32-bit PIO
pata_artop: add Power Management support
pata_sl82c105: add Power Management support
pata_pdc2027x: add Power Management support
pata_legacy: use PIO mask defines
pata_legacy: unify QDI ->set_piomode methods
libata: remove no longer needed pata_qdi driver
pata_it8213: fix register naming used in it8213_set_piomode()
pata_it8213: add UDMA100 and UDMA133 support
pata_rdc: parallel scanning needs an extra locking
pata_via: add via_fixup()
libata: ata_timing_compute() fixup
pata_scc: add proper cable detection method
pata_arasan_cf: remove bogus to_platform_device() calls
pata_atiixp: add proper ->prereset method
pata_serverworks: add serverworks_fixup()
...
Michal Hocko [Tue, 27 Sep 2011 06:56:03 +0000 (08:56 +0200)]
lguest: move process freezing before pending signals check
run_guest tries to freeze the current process after it has handled
pending interrupts and before it calls lguest_arch_run_guest.
This doesn't work nicely if the task has been killed while being frozen
and when we want to handle that signal as soon as possible.
Let's move try_to_freeze before we check for pending signal so that we
can get out of the loop as soon as possible.
Signed-off-by: Michal Hocko <mhocko@suse.cz> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Mark Brown [Mon, 24 Oct 2011 21:59:21 +0000 (23:59 +0200)]
h8300: Move gpio.h to gpio-internal.h
The current h8300 GPIO implementation doesn't provide the standard GPIO
API, and in fact provides only direction control rather than normal GPIO
functionality. Currently this is only used by the platform interrupt
implementation rather than by a range of drivers so in preparation for
moving over to gpiolib move the header out of the way of the gpiolib
header, allowing a default GPIO implementation to be provided.
For actual use of these GPIOs with gpiolib a real driver would still need
to be written but there appears to be no current need for this.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Rob Herring [Wed, 10 Aug 2011 21:31:46 +0000 (16:31 -0500)]
gpio: pl061: add DT binding support
This adds devicetree binding support to the ARM pl061 driver removing the
platform_data dependency. When DT binding is used, the gpio numbering is
assigned dynamically. For now, interrupts are not supported with DT until
irqdomains learn dynamic irq assignment.
Rather than add another case of -1, updating the driver to use NO_IRQ.
Signed-off-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Takashi Iwai [Wed, 26 Oct 2011 21:04:08 +0000 (23:04 +0200)]
ALSA: hda - Fix pin-config for ASUS W90V
The association numbers of surround/CLFE speaker pins aren't correctly
mapped by the auto-parser. This patch fixes the CLFE speaker pin to the
right assoc value (from 3 to 1).
Ulf Hansson [Thu, 13 Oct 2011 14:03:58 +0000 (16:03 +0200)]
mmc: core: Prevent too long response times for suspend
While trying to suspend the mmc host there could still be
ongoing requests that we need to wait for. At the same time
a device driver must respond to a suspend request rather quickly.
Instead of potentially wait "forever" by claiming the host we now
"try" to claim the host instead. If it fails, -EBUSY is returned.
Subhash Jadavani [Wed, 10 Aug 2011 05:46:01 +0000 (11:16 +0530)]
mmc: sd: Handle SD3.0 cards not supporting UHS-I bus speed mode
Here is Essential conditions to indicate Version 3.00 Card
(SD_SPEC=2 and SD_SPEC3=1) :
(1) The card shall support CMD6
(2) The card shall support CMD8
(3) The card shall support CMD42
(4) User area capacity shall be up to 2GB (SDSC) or 32GB (SDHC)
User area capacity shall be more than or equal to 32GB and
up to 2TB (SDXC)
(5) Speed Class shall be supported (SDHC or SDXC)
So even if SD card doesn't support any of the newly defined
UHS-I bus speed mode, it can advertise itself as SD3.0 cards
as long as it supports all the essential conditions of
SD3.0 cards. Given this, these type of cards should atleast
run in High Speed mode @50MHZ if it supports HS.
But current initialization sequence for SD3.0 cards is
such that these non-UHS-I SD3.0 cards runs in Default
Speed mode @25MHz.
This patch makes sure that these non-UHS-I SD3.0 cards run
in High Speed Mode @50MHz.
Tested this patch with SanDisk Extreme SDHC 8GB Class 10 card.
Jaehoon Chung [Mon, 17 Oct 2011 10:36:23 +0000 (19:36 +0900)]
mmc: dw_mmc: modify DATA register offset
In dw_mmc 2.40a spec, Data register's offset is changed.
Before we used Data register offset 0x100. but if somebody uses a
2.40a controller, we must use 0x200 for Data register.
This patch adds a version-id checking point and uses SDMMC_DATA(x)
instead of SDMMC_DATA. It assumes 2.40a is the latest version.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: James Hogan <james.hogan@imgtec.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Adrian Hunter [Fri, 6 May 2011 09:14:10 +0000 (12:14 +0300)]
mmc: omap_hsmmc: ensure pbias configuration is always done
Go through the driver's set_power() functions rather than
calling regulator_enable/disable() directly because otherwise
pbias configuration for MMC1 is not done.
Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com> Acked-by: Balaji T K <balajitk@ti.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Girish K S [Thu, 13 Oct 2011 06:34:16 +0000 (12:04 +0530)]
mmc: core: Add Power Off Notify Feature eMMC 4.5
This patch adds support for the power off notify feature, available in
eMMC 4.5 devices. If the host has support for this feature, then the
mmc core will notify the device by setting the POWER_OFF_NOTIFICATION
byte in the extended csd register with a value of 1 (POWER_ON).
For suspend mode short timeout is used, whereas for the normal poweroff
long timeout is used.
Signed-off-by: Girish K S <girish.shivananjappa@linaro.org> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
EXT_CSD[248] includes the default maximum timeout for CMD6.
This field is added at eMMC4.5 Spec. And it can be used for default
timeout except for some operations which don't define the timeout
(i.e. background operation, sanitize, flush cache) in eMMC4.5 Spec.
Adrian Hunter [Mon, 3 Oct 2011 12:33:34 +0000 (15:33 +0300)]
mmc: sdhci-pci: add runtime pm support
Ths patch allows runtime PM for sdhci-pci, runtime suspending after
inactivity of 50ms and ensuring runtime resume before SDHC registers
are accessed. During runtime suspend, interrupts are masked.
The host controller state is restored at runtime resume.
For Medfield, the host controller's card detect mechanism is
supplanted by an always-on GPIO which provides for card detect wake-up.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Adrian Hunter [Mon, 3 Oct 2011 12:33:33 +0000 (15:33 +0300)]
mmc: core: move ->request() call from atomic context
mmc_request_done() is sometimes called from interrupt or other atomic
context. Mostly all mmc_request_done() does is complete(), however it
contains code to retry on error, which uses ->request(). As the error
path is certainly not performance critical, this may be moved to the
waiting function mmc_wait_for_req_done().
This allows ->request() to use runtime PM get_sync() and guarantee it
is never in an atomic context.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Ulf Hansson <ulf.hansson@stericsson.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Paul Gortmaker [Sun, 3 Jul 2011 19:15:51 +0000 (15:15 -0400)]
mmc: Add module.h to drivers/mmc users assuming implicit presence.
We are cleaning up the implicit presence of module.h; these guys are
some of the people who just assume it will be there. Call it out
explitly for those that really need it.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Chris Ball <cjb@laptop.org>
mmc: using module_param requires the inclusion of moduleparam.h
Commit "mmc: add module param to set fault injection attributes" adds
a module_param to this file. But it is relying on the old implicit
"module.h is everywhere" behaviour, and without the explicit include
of moduleparam.h, the pending module.h split up produces this error:
core/debugfs.c:28:35: error: expected ')' before numeric constant
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Namjae Jeon [Thu, 6 Oct 2011 14:41:38 +0000 (23:41 +0900)]
mmc: core: general purpose MMC partition support.
It allows gerneral purpose partitions in MMC Device. And I try to simply
make mmc_blk_alloc_parts using mmc_part structure suggested by Andrei
Warkentin. After patching, we see general purpose partitions like this:
> cat /proc/partitions
179 0 847872 mmcblk0
179 192 4096 mmcblk0gp3
179 160 4096 mmcblk0gp2
179 128 4096 mmcblk0gp1
179 96 1052672 mmcblk0gp0
179 64 1024 mmcblk0boot1
179 32 1024 mmcblk0boot0
Signed-off-by: Namjae Jeon <linkinjeon@gmail.com> Acked-by: Andrei Warkentin <awarkentin@vmware.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Andrei Warkentin [Sat, 24 Sep 2011 16:12:30 +0000 (12:12 -0400)]
mmc: core: ext_csd.raw_* used in comparison but never set
f39b2dd9d ("mmc: core: Bus width testing needs to handle suspend/resume")
added code to only compare read-only ext_csd fields in bus width testing
code, yet it's comparing some fields that are never set.
The affected fields are ext_csd.raw_erased_mem_count and
ext_csd.raw_partition_support.
Signed-off-by: Andrei Warkentin <andrey.warkentin@gmail.com> Acked-by: Philip Rakity <prakity@marvell.com> Cc: <stable@kernel.org> Signed-off-by: Chris Ball <cjb@laptop.org>
Since commit [e58aa3d2: genirq: Run irq handlers with interrupts
disabled], we run all interrupt handlers with interrupts disabled
and we even check and yell when an interrupt handler returns with
interrupts enabled (see commit [b738a50a: genirq: Warn when handler
enables interrupts]).
Adrian Hunter [Fri, 23 Sep 2011 09:48:21 +0000 (12:48 +0300)]
mmc: block: support no access to boot partitions
Intel Medfield platform blocks access to eMMC boot partitions which
results in switch errors. Since there is no access, mmcboot0/1
devices should not be created. Add a host capability to reflect that.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Adrian Hunter [Fri, 23 Sep 2011 09:48:20 +0000 (12:48 +0300)]
mmc: block: fix boot partition switch error path
In the case of a switch error, do not update partition config as though
the switch succeeded, and ensure blk_end_request is called on the
failed request.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Andrei Warkentin <andrey.warkentin@gmail.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Girish K S [Fri, 23 Sep 2011 15:11:47 +0000 (20:41 +0530)]
mmc: core: eMMC 4.5 Power Class Selection Feature
This patch adds the power class selection feature available for mmc
versions 4.0 and above. During the enumeration stage before switching
to the lower data bus, check if the power class is supported for the
current bus width. If the power class is available then switch to the
power class and use the higher data bus. If power class is not supported
then switch to the lower data bus in a worst case.
Signed-off-by: Girish K S <girish.shivananjappa@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
Per Forlin [Tue, 13 Sep 2011 21:03:29 +0000 (23:03 +0200)]
mmc: add module param to set fault injection attributes
Replace setup("fail_mmc_request") and faulty "ifdef KERNEL" with
a simple module_param(). The module param mmc_core.fail_request
may be used to set the fault injection attributes during boot time
or module load time.
Signed-off-by: Per Forlin <per.forlin@linaro.org> Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Adrian Hunter [Mon, 29 Aug 2011 13:42:15 +0000 (16:42 +0300)]
mmc: block: add eMMC hardware reset support
For cards that support hardware reset (just eMMC), try a reset and
retry before returning an I/O error. However this is not done for
ECC errors and is never done twice for the same operation type
(READ, WRITE, DISCARD, SECURE DISCARD) until that type of operation
again succeeds.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Adrian Hunter [Mon, 29 Aug 2011 13:42:11 +0000 (16:42 +0300)]
mmc: core: add eMMC hardware reset support
eMMC's may have a hardware reset line. This patch provides a
host controller operation to implement hardware reset and
a function to reset and reinitialize the card. Also, for MMC,
the reset is always performed before initialization.
The host must set the new host capability MMC_CAP_HW_RESET
to enable hardware reset.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Per Forlin [Mon, 29 Aug 2011 13:35:59 +0000 (15:35 +0200)]
mmc: mmci: simplify err check in mmci_post_request
The error condition indicates that mmci_post_request() should cleanup
after the mmci_pre_request(). In this case the resources allocated by
device_prep_slave_sg() are freed by calling dmaengine_terminate_all().
dma_unmap_sg() should always be performed if the host_cookie is set.
Signed-off-by: Per Forlin <per.forlin@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
Per Forlin [Mon, 29 Aug 2011 13:35:58 +0000 (15:35 +0200)]
mmc: core: clarify how to use post_req in case of errors
The err condition in post_req() is set to undo a call made to pre_req()
that hasn't been started yet. The err condition is not set if an MMC
request returns an error.
Signed-off-by: Per Forlin <per.forlin@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
Earlier all cards where initiated with bus mode set as OPENDRAIN, and then
later switched to PUSHPULL. According to the MMC/SD/SDIO specifications
only MMC cards use OPENDRAIN during init. For both SD and SDIO the bus
mode shall be PUSHPULL before attempting to init the card.
The consequence of having incorrect bus mode can lead to not being able
to detect the card. Therefore the default behavior have now been changed
to PUSHPULL in mmc_power_up, and will only be temporarily switched when
trying to attach or init a MMC card.
Signed-off-by: Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com> Signed-off-by: Ulf HANSSON <ulf.hansson@stericsson.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
Adds a quirk which can be turned on for SDIO devices that do not support
512 byte requests in byte mode during CMD53. These requests will always
be sent in block mode instead.
This patch also enables this quirk for ST-Ericsson CW1200 WLAN device.
Signed-off-by: Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com> Signed-off-by: Ulf HANSSON <ulf.hansson@stericsson.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
mmc: core: Fix hangs related to insert/remove of cards
During a rescan operation mmc_attach(sd|mmc|sdio) functions are
called. The error handling in these function can trigger a detach
of the bus, which also meant a power off. This is not notified by
the rescan operation which then continues to the next attach function.
If a power off has been done, the framework must never send any
new commands to the host driver, without first doing a new power up.
This will most likely trigger any host driver to hang.
Moving power off out of detach and instead handle power off
separately when it is actually needed, solves the issue.
mmc: sdhci-spear: Don't set power gpio to 1 on probe
Currently if card_power_gpio is passed from platform data, it is acquired
and its value is either set or reset. After that we overwrite it with 1,
which is not required.
So, this patch removes the extra line which sets its value.
Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Xu lei [Fri, 9 Sep 2011 12:05:46 +0000 (20:05 +0800)]
mmc: sdhci-of-esdhc: Access Freescale eSDHC registers as 32-bit
Freescale eSDHC registers only support 32-bit accesses, this patch
ensures that all Freescale eSDHC register accesses are 32-bit.
Signed-off-by: Xu lei <B33228@freescale.com> Signed-off-by: Roy Zang <tie-fei.zang@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Anton Vorontsov <cbouatmailru@gmail.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Linus Torvalds [Wed, 26 Oct 2011 19:46:18 +0000 (21:46 +0200)]
Merge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux
* 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux:
tools, slub: Fix off-by-one buffer corruption after readlink() call
slub: Discard slab page when node partial > minimum partial number
slub: correct comments error for per cpu partial
mm: restrict access to slab files under procfs and sysfs
slub: Code optimization in get_partial_node()
slub: doc: update the slabinfo.c file path
slub: explicitly document position of inserting slab to partial list
slub: update slabinfo tools to report per cpu partial list statistics
slub: per cpu cache for partial pages
slub: return object pointer from get_partial() / new_slab().
slub: pass kmem_cache_cpu pointer to get_partial()
slub: Prepare inuse field in new_slab()
slub: Remove useless statements in __slab_alloc
slub: free slabs without holding locks
slub: use print_hex_dump
slab: use print_hex_dump
Balaji T K [Thu, 8 Sep 2011 16:38:39 +0000 (22:08 +0530)]
mmc: core: Put eMMC in Sleep mode before suspend
Put MMC to sleep if it supports SLEEP/AWAKE (CMD5) in the mmc suspend
so that Vcc (NAND core) can be cut to minimize power consumption.
eMMC put into SLEEP can respond to CMD0 or H/W reset or CMD5.
Current implemention on resume from suspend relies on CMD0 in
mmc_init_card to get out of SLEEP mode.
Signed-off-by: Balaji T K <balajitk@ti.com> Acked-by: Venkatraman S <svenkatr@ti.com> Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
The default controller configuration which was previously setup by
platform helper functions is moved into the driver.
Cc: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Daniel Drake [Wed, 7 Sep 2011 09:22:09 +0000 (10:22 +0100)]
mmc: core: add a short delay in mmc_power_off
Stress-testing the runtime power management of libertas_sdio
through a rmmod/insmod loop revealed that it is quite easy to
cause an ETIMEDOUT failure in mmc_sdio_power_restore() leading to:
libertas_sdio: probe of mmc1:0001:1 failed with error -16
Experimentation shows that a very short delay (100us) is needed in
the power down path before the card can be successfully booted again.
We know that this setup is lacking poweroff clamps on the card's power
lines, but as only a short delay is needed, apply this unconditionally.
Also bump up to 1ms sleep for extra legroom.
Signed-off-by: Daniel Drake <dsd@laptop.org> Signed-off-by: Chris Ball <cjb@laptop.org>
Stephen Warren [Tue, 30 Aug 2011 19:17:16 +0000 (13:17 -0600)]
mmc: sdhci-tegra: Add 8-bit support to device tree binding.
The previous patch which implemented a DT binding for sdhci-tegra did not
allow all platform data fields to be initialized from DT. The following
were missing:
is_8bit: Implemented by this patch.
pm_flags: Not implemented yet. There are no mainline users of this field.
I'm not quite sure what it's for, and hence how to represent this
in DT; the value ends up being assigned to host->mmc->pm_caps.
While we're at it, fix the binding documentation to refer to "SD/MMC"
instead of "eSDHC", since that's the correct name; "eSDHC" was cut/paste
from the Freescale binding docs.
Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Chris Ball <cjb@laptop.org>
mmc: dw_mmc: Support SDIO interrupts for all slots
The Patch adds the support for SDIO interrupts for all slots.
It includes enabling of SDIO interrupts through dw_mci_enable_sdio_irq
and the handling of the slot specific interrupts in the Interrupt Service
Routine.
Signed-off-by: Shashidhar Hiremath <shashidharh@vayavyalabs.com> Acked-by: James Hogan <james.hogan@imgtec.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Sahitya Tummala [Mon, 2 May 2011 12:39:18 +0000 (18:09 +0530)]
mmc: msm_sdcc: Use MCI_INT_MASK0 for PIO interrupts
Not all targets have IRQ1 line routed from the SD controller to
the processor. So we cannot rely on IRQ1 for PIO interrupts.
This patch moves all PIO interrupts to IRQ0 and enables the PIO
mode.
Signed-off-by: Murali Palnati <palnatim@codeaurora.org> Signed-off-by: Sahitya Tummala <stummala@codeaurora.org> Signed-off-by: David Brown <davidb@codeaurora.org> Signed-off-by: Chris Ball <cjb@laptop.org>
Sahitya Tummala [Mon, 2 May 2011 12:37:43 +0000 (18:07 +0530)]
msm: mmc: Remove "pio_irq" resource
On some targets, MCI_IRQ_MASK1 is not routed to the MSM in which
case only "cmd_irq" must be used even for PIO. With this change,
all the targets will use only "cmd_irq" for both CMD and PIO.
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org> Signed-off-by: David Brown <davidb@codeaurora.org> Signed-off-by: Chris Ball <cjb@laptop.org>
Sahitya Tummala [Mon, 2 May 2011 12:37:01 +0000 (18:07 +0530)]
mmc: msm_sdcc: Enable SDC host->clk only after setting the rate.
For clocks that support rates which can be set (most clocks other
than _pclk AHB clocks), a rate must be set using clk_set_rate()
before the clock is enabled for the first time with clk_enable().
Subsequent calls to clk_enable() need not be preceded with the
clk_set_rate() calls unless we wish to change the clock rate that
is set previously.
SDC host->clk is currently enabled without setting the clock rate
even once. This patch fixes this, by ensuring that the clock rate
for this clock is first set before enabling the clock.
Signed-off-by: Murali Palnati <palnatim@codeaurora.org> Signed-off-by: Sahitya Tummala <stummala@codeaurora.org> Signed-off-by: David Brown <davidb@codeaurora.org> Signed-off-by: Chris Ball <cjb@laptop.org>
This allows boards with non-standard sdio cards to fill the CIS/CCCR data.
It is particularly important for old msm72k boards using wl1251.
Also drop the obsolete embedded_sdio_data structure from the header
as it was intended to surve a similiar purpose but was not implemented.
Signed-off-by: Alexander Tarasikov <alexander.tarasikov@gmail.com> Acked-by: Sahitya Tummala <stummala@codeaurora.org>
[davidb: minor formatting cleanup] Signed-off-by: David Brown <davidb@codeaurora.org> Signed-off-by: Chris Ball <cjb@laptop.org>
mmc: msm_sdcc: Fix a typo in MSM SDCC driver gpio setup
The use of && instead of || caused a NULL pointer dereference if
gpio setup was not passed via platform data
Signed-off-by: Alexander Tarasikov <alexander.tarasikov@gmail.com> Acked-by: Sahitya Tummala <stummala@codeaurora.org> Signed-off-by: David Brown <davidb@codeaurora.org> Signed-off-by: Chris Ball <cjb@laptop.org>
Simon Horman [Thu, 25 Aug 2011 01:27:28 +0000 (10:27 +0900)]
ARM: shmobile: ag5evm, ap4: Named SDHI IRQ sources
This allows specific (non-multiplexed) IRQ handlers to be used.
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Paul Mundt <lethal@linux-sh.org> Acked-by: Magnus Damm <magnus.damm@gmail.com> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Chris Ball <cjb@laptop.org>
Simon Horman [Fri, 26 Aug 2011 08:42:39 +0000 (10:42 +0200)]
mmc: sdhi: Allow named IRQs to use specific handlers
Allow named IRQs to use corresponding specific handlers. If named IRQs are
used, at least an "sdcard" IRQ has to be specified by the platform. If
names are not used, an arbitrary number of IRQs can be provided by the
platform, in which case the generic ISR will be used for each of them.
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Magnus Damm <magnus.damm@gmail.com> Signed-off-by: Simon Horman <horms@verge.net.au>
[g.liakhovetski@gmx.de: style and typo corrections, platform data check] Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
The individual SoC dependency in Kconfig hardly scales anymore.
Instead of having such a fine grained dependency just depend
on ARCH_MXC and risk that the uninformed user has to look in
the help text to figure out which driver is the correct one.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Chris Ball <cjb@laptop.org>
Grant Likely [Tue, 23 Aug 2011 18:15:33 +0000 (12:15 -0600)]
mmc: sdhci-tegra: Add Device Tree probing support
Add hooks to read gpio configuration out of the device tree node.
[grant.likely: Rewrite of original patch from John Bonesio] Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
[swarren: Fixed tegra_sdhci_get_ro() to retrieve pdata correctly]
[swarren: Reworked to avoid #ifdef CONFIG_OF]
[swarren: Reworked binding based on fsl-imx-esdhc.txt]
[swarren: Documented binding] Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Daniel Drake [Wed, 20 Jul 2011 16:39:22 +0000 (17:39 +0100)]
mmc: enable runtime PM by default
Now that we have improved the runtime power management powerup/powerdown
code, we believe that MMC_CAP_POWER_OFF_CARD is no longer necessary:
runtime PM should now work everywhere.
The only hard evidence for introducing MMC_CAP_POWER_OFF_CARD was the
Marvell sd8686 wifi chip, which was believed to require external gpio
manipulation which wasn't supported by some boards.
After further investigation it was realized (and confirmed by Marvell
folks) that sd8686 requirements can be fulfilled by changing the reset
sequence itself, even if no external gpio is manipulated.
For further information, see the following thread:
http://www.mail-archive.com/linux-mmc@vger.kernel.org/msg04289.html
Enable this trivially for a release or two. If no problems are reported,
we will follow up with a more extensive patch to remove this flag
altogether. If problems are reported, we can look at whitelist/blacklist
possibilities as before.
Signed-off-by: Daniel Drake <dsd@laptop.org> Acked-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Chris Ball <cjb@laptop.org>