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If the CD/WP-GPIOs are not provided by the SoC's GPIO controller,
we need to handle the case where omap_hsmmc is probed earlier than
the GPIO controller chosen in the device tree.
Fix this by checking the return value of of_get_named_gpio against
-EPROBE_DEFER and passing it through to the probe function.
Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Acked-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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Pull ARM SoC Header cleanups from Olof Johansson:
"This is a collection of header file cleanups, mostly for OMAP and
AT91, that keeps moving the platforms in the direction of
multiplatform by removing the need for mach-dependent header files
used in drivers and other places."
Fix up mostly trivial conflicts as per Olof.
* tag 'headers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (106 commits)
ARM: OMAP2+: Move iommu/iovmm headers to platform_data
ARM: OMAP2+: Make some definitions local
ARM: OMAP2+: Move iommu2 to drivers/iommu/omap-iommu2.c
ARM: OMAP2+: Move plat/iovmm.h to include/linux/omap-iommu.h
ARM: OMAP2+: Move iopgtable header to drivers/iommu/
ARM: OMAP: Merge iommu2.h into iommu.h
atmel: move ATMEL_MAX_UART to platform_data/atmel.h
ARM: OMAP: Remove omap_init_consistent_dma_size()
arm: at91: move at91rm9200 rtc header in drivers/rtc
arm: at91: move reset controller header to arm/arm/mach-at91
arm: at91: move pit define to the driver
arm: at91: move at91_shdwc.h to arch/arm/mach-at91
arm: at91: move board header to arch/arm/mach-at91
arn: at91: move at91_tc.h to arch/arm/mach-at91
arm: at91 move at91_aic.h to arch/arm/mach-at91
arm: at91 move board.h to arch/arm/mach-at91
arm: at91: move platfarm_data to include/linux/platform_data/atmel.h
arm: at91: drop machine defconfig
ARM: OMAP: Remove NEED_MACH_GPIO_H
ARM: OMAP: Remove unnecessary mach and plat includes
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg Kroah-Hartman:
"Here's the large driver core updates for 3.8-rc1.
The biggest thing here is the various __dev* marking removals. This
is going to be a pain for the merge with different subsystem trees, I
know, but all of the patches included here have been ACKed by their
various subsystem maintainers, as they wanted them to go through here.
If this is too much of a pain, I can pull all of them out of this tree
and just send you one with the other fixes/updates and then, after
3.8-rc1 is out, do the rest of the removals to ensure we catch them
all, it's up to you. The merges should all be trivial, and Stephen
has been doing them all in linux-next for a few weeks now quite
easily.
Other than the __dev* marking removals, there's nothing major here,
some firmware loading updates and other minor things in the driver
core.
All of these have (much to Stephen's annoyance), been in linux-next
for a while.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
Fixed up trivial conflicts in drivers/gpio/gpio-{em,stmpe}.c due to gpio
update.
* tag 'driver-core-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (93 commits)
modpost.c: Stop checking __dev* section mismatches
init.h: Remove __dev* sections from the kernel
acpi: remove use of __devinit
PCI: Remove __dev* markings
PCI: Always build setup-bus when PCI is enabled
PCI: Move pci_uevent into pci-driver.c
PCI: Remove CONFIG_HOTPLUG ifdefs
unicore32/PCI: Remove CONFIG_HOTPLUG ifdefs
sh/PCI: Remove CONFIG_HOTPLUG ifdefs
powerpc/PCI: Remove CONFIG_HOTPLUG ifdefs
mips/PCI: Remove CONFIG_HOTPLUG ifdefs
microblaze/PCI: Remove CONFIG_HOTPLUG ifdefs
dma: remove use of __devinit
dma: remove use of __devexit_p
firewire: remove use of __devinitdata
firewire: remove use of __devinit
leds: remove use of __devexit
leds: remove use of __devinit
leds: remove use of __devexit_p
mmc: remove use of __devexit
...
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Define the most frequently used bitmasks of the Interrupt Enable /
Interrupt Status register with consistent naming ( with _EN suffix).
Use meaningful concatenation of bitfields for INT_EN_MASK, which shows
which interrupts are enabled by default. No functional changes.
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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Fatal errors for the driver are not reported when just error debug
is enabled. Convert selected dev_dbg to dev_err for accurate error
reporting.
Reported-by: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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prepare() is supposed to prevent new children from being registered.
On the MMC subsystem, children (new cards) registration starts with
the card detect IRQ.
Move card detect IRQ disabling to prepare() so that no new cards
will be registered while we're trying to suspend.
Likewise, move card detect IRQ enabling to complete() so we only
try to register new children after our MMC IP is back up.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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HSMMC IP on AM33xx need a special setting to handle High-speed cards.
Other platforms like TI81xx, OMAP4 may need this as-well. This depends
on the HSMMC IP timing closure done for the high speed cards.
From AM335x TRM (SPRUH73F - 18.3.12 Output Signals Generation):
The MMC/SD/SDIO output signals can be driven on either falling edge or
rising edge depending on the SD_HCTL[2] HSPE bit. This feature allows
to reach better timing performance, and thus to increase data transfer
frequency.
There are few pre-requisites for enabling the HSPE bit
- Controller should support High-Speed-Enable Bit and
- Controller should not be using DDR Mode and
- Controller should advertise that it supports High Speed in
capabilities register and
- MMC/SD clock coming out of controller > 25MHz
Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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Update error code to cmd->error for commands with response_busy and no data.
Signed-off-by: Balaji T K <balajitk@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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Avoid soft reset of command internal state machine on data errors.
Signed-off-by: Balaji T K <balajitk@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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ae4bf788ee9 ("mmc: omap_hsmmc: consolidate error report handling of HSMMC
IRQ") sets both end_cmd and end_trans to 1.
Setting end_cmd to 1 for Data Timeout/CRC leads to NULL pointer dereference of
host->cmd as the command complete has previously been handled.
Set end_cmd only in case of command Timeout/CRC.
Moreover host->cmd->error should not be updated on data error case, only
host->data->error needs to be updated.
Signed-off-by: Balaji T K <balajitk@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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MMC debounce clock is applicable only for omap2430, warning message gets
printed when enable fails for debounce clock. Remove the get debounce clock
failure message as it is noisy for other platforms.
Signed-off-by: Balaji T K <balajitk@ti.com>
Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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Maximum bus frequency can be limited by external circuitry like level
shifters etc. Allow passing this value from DT.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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This allows DT-driven board to set up the pin mux only when the driver
is in use.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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CONFIG_HOTPLUG is going away as an option so __devexit is no
longer needed.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Chris Ball <cjb@laptop.org>
Cc: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Cc: Venkatraman S <svenkatr@ti.com>
Cc: Viresh Kumar <viresh.linux@gmail.com>
Cc: Ian Molton <ian@mnementh.co.uk>
Cc: Bruce Chang <brucechang@via.com.tw>
Cc: Harald Welte <HaraldWelte@viatech.com>
Cc: Pierre Ossman <pierre@ossman.eu>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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CONFIG_HOTPLUG is going away as an option so __devinit is no longer
needed.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Chris Ball <cjb@laptop.org>
Cc: Manuel Lauss <manuel.lauss@gmail.com>
Cc: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Cc: Venkatraman S <svenkatr@ti.com>
Cc: Ian Molton <ian@mnementh.co.uk>
Cc: Bruce Chang <brucechang@via.com.tw>
Cc: Harald Welte <HaraldWelte@viatech.com>
Cc: Pierre Ossman <pierre@ossman.eu>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer
needed.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Chris Ball <cjb@laptop.org>
Cc: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Cc: Venkatraman S <svenkatr@ti.com>
Cc: Ian Molton <ian@mnementh.co.uk>
Cc: Bruce Chang <brucechang@via.com.tw>
Cc: Harald Welte <HaraldWelte@viatech.com>
Cc: Pierre Ossman <pierre@ossman.eu>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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dev->platform_data is NULL in case of device tree boot,
instead use the saved version in struct omap_hsmmc_host.
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>
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struct omap_hsmmc_host *host should not be accessed after mmc_free_host().
Reorder mmc_free_host() after iounmap(host->base).
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>
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We need to remove this from plat for ARM common zImage
support.
Also remove includes not needed by the omap_hsmmc.c driver.
Cc: linux-mmc@vger.kernel.org
Acked-by: Chris Ball <cjb@laptop.org>
Acked-by: Venkatraman S <svenkatr@ti.com>
[tony@atomide.com: fold in removal of unused driver includes]
Signed-off-by: Tony Lindgren <tony@atomide.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc
Pull MMC updates from Chris Ball:
"Core:
- Add DT properties for card detection (broken-cd, cd-gpios,
non-removable)
- Don't poll non-removable devices
- Fixup/rework eMMC sleep mode/"power off notify" feature
- Support eMMC background operations (BKOPS). To set the one-time
programmable fuse that enables bkops on an eMMC that doesn't
already have it set, you can use the "mmc bkops enable" command in:
git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc-utils.git
Drivers:
- atmel-mci, dw_mmc, pxa-mci, dove, s3c, spear: Add device tree
support
- bfin_sdh: Add support for the controller in bf60x
- dw_mmc: Support Samsung Exynos SoCs
- eSDHC: Add ADMA support
- sdhci: Support testing a cd-gpio (from slot-gpio) instead of
presence bit
- sdhci-pltfm: Support broken-cd DT property
- tegra: Convert to only supporting DT (mach-tegra has gone DT-only)"
* tag 'mmc-merge-for-3.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (67 commits)
mmc: core: Fixup broken suspend and eMMC4.5 power off notify
mmc: sdhci-spear: Add clk_{un}prepare() support
mmc: sdhci-spear: add device tree bindings
mmc: sdhci-s3c: Add clk_(enable/disable) in runtime suspend/resume
mmc: core: Replace MMC_CAP2_BROKEN_VOLTAGE with test for fixed regulator
mmc: sdhci-pxav3: Use sdhci_get_of_property for parsing DT quirks
mmc: dt: Support "broken-cd" property in sdhci-pltfm
mmc: sdhci-s3c: fix the wrong number of max bus clocks
mmc: sh-mmcif: avoid oops on spurious interrupts
mmc: sh-mmcif: properly handle MMC_WRITE_MULTIPLE_BLOCK completion IRQ
mmc: sdhci-s3c: Fix crash on module insertion for second time
mmc: sdhci-s3c: Enable only required bus clock
mmc: Revert "mmc: dw_mmc: Add check for IDMAC configuration"
mmc: mxcmmc: fix bug that may block a data transfer forever
mmc: omap_hsmmc: Pass on the suspend failure to the PM core
mmc: atmel-mci: AP700x PDC is not connected to MCI
mmc: atmel-mci: DMA can be used with other controllers
mmc: mmci: use clk_prepare_enable and clk_disable_unprepare
mmc: sdhci-s3c: Add device tree support
mmc: dw_mmc: add support for exynos specific implementation of dw-mshc
...
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In some cases mmc_suspend_host() is not able to claim the
host and proceed with the suspend process. The core returns
-EBUSY to the host controller driver. Unfortunately, the
host controller driver does not pass on this information
to the PM core and hence the system suspend process continues.
ret = mmc_suspend_host(host->mmc);
if (ret) {
host->suspended = 0;
if (host->pdata->resume) {
ret = host->pdata->resume(dev, host->slot_id);
The return status from mmc_suspend_host() is overwritten by return
status from host->pdata->resume. So the original return status is lost.
In these cases the MMC core gets to an unexpected state
during resume and multiple issues related to MMC crop up.
1. Host controller driver starts accessing the device registers
before the clocks are enabled which leads to a prefetch abort.
2. A file copy thread which was launched before suspend gets
stuck due to the host not being reclaimed during resume.
To avoid such problems pass on the -EBUSY status to the PM core
from the host controller driver. With this change, MMC core
suspend might still fail but it does not end up making the
system unusable. Suspend gets aborted and the user can try
suspending the system again.
Signed-off-by: Vaibhav Bedia <vaibhav.bedia@ti.com>
Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com>
Acked-by: Venkatraman S <svenkatr@ti.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
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Pull ARM soc general cleanups from Olof Johansson:
"This is a large branch that contains a handful of different cleanups:
- Fixing up the I/O space remapping on PCI on ARM. This is a series
from Rob Herring that restructures how all pci devices allocate I/O
space, and it's part of the work to allow multiplatform kernels.
- A number of cleanup series for OMAP, moving and removing some
headers, sparse irq rework and in general preparation for
multiplatform.
- Final removal of all non-DT boards for Tegra, it is now
device-tree-only!
- Removal of a stale platform, nxp4008. It's an old mobile chipset
that is no longer in use, and was very likely never really used
with a mainline kernel. We have not been able to find anyone
interested in keeping it around in the kernel.
- Removal of the legacy dmaengine driver on tegra
+ A handful of other things that I haven't described above."
Fix up some conflicts with the staging tree (and because nxp4008 was
removed)
* tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (184 commits)
ARM: OMAP2+: serial: Change MAX_HSUART_PORTS to 6
ARM: OMAP4: twl-common: Support for additional devices on i2c1 bus
ARM: mmp: using for_each_set_bit to simplify the code
ARM: tegra: harmony: fix ldo7 regulator-name
ARM: OMAP2+: Make omap4-keypad.h local
ARM: OMAP2+: Make l4_3xxx.h local
ARM: OMAP2+: Make l4_2xxx.h local
ARM: OMAP2+: Make l3_3xxx.h local
ARM: OMAP2+: Make l3_2xxx.h local
ARM: OMAP1: Move irda.h from plat to mach
ARM: OMAP2+: Make hdq1w.h local
ARM: OMAP2+: Make gpmc-smsc911x.h local
ARM: OMAP2+: Make gpmc-smc91x.h local
ARM: OMAP1: Move flash.h from plat to mach
ARM: OMAP2+: Make debug-devices.h local
ARM: OMAP1: Move board-voiceblue.h from plat to mach
ARM: OMAP1: Move board-sx1.h from plat to mach
ARM: OMAP2+: Make omap-wakeupgen.h local
ARM: OMAP2+: Make omap-secure.h local
ARM: OMAP2+: Make ctrl_module_wkup_44xx.h local
...
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull non-critical ARM soc bug fixes from Olof Johansson:
"These were submitted as bug fixes before v3.6 but not considered
important enough to be included in it. Some of them cross over to
cleanup territory as well, and aren't strictly bugfixes."
* tag 'fixes-non-critical' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (48 commits)
ARM: nomadik: remove NAND_NO_READRDY use
ARM: pxa: fix return value check in pxa2xx_drv_pcmcia_probe()
ARM: SAMSUNG: Add missing variable declaration in s3c64xx_spi1_set_platdata()
ARM: S3C24XX: removes unnecessary semicolon
ARM: S3C24xx: delete double assignment
ARM: EXYNOS: fix address for EXYNOS4 MDMA1
ARM: EXYNOS: fixed SYSMMU setup definition to mate parameter name
ARM: ep93xx: Move ts72xx.h out of include/mach
ARM: ep93xx: use __iomem pointers for MMIO
ARM: msm: Fix early debug uart mapping on some memory configs
ARM: msm: io: Change the default static iomappings to be shared
ARM: msm: io: Remove 7x30 iomap region from 7x00
ARM: msm: Remove call to missing FPGA init on 8660
ARM: OMAP4: wakeupgen: remove duplicate AUXCOREBOOT* read/write
ARM: OMAP4: wakeupgen: Fix the typo in AUXCOREBOOT register save
dma: tegra: make data used as *of_device_id.data const
can: mpc5xxx_can: make data used as *of_device_id.data const
macintosh/mediabay: make data used as *of_device_id.data const
i2c/mpc: make data used as *of_device_id.data const
mfd/da9052: make i2c_device_id array const
...
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull the trivial tree from Jiri Kosina:
"Tiny usual fixes all over the place"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (34 commits)
doc: fix old config name of kprobetrace
fs/fs-writeback.c: cleanup riteback_sb_inodes kerneldoc
btrfs: fix the commment for the action flags in delayed-ref.h
btrfs: fix trivial typo for the comment of BTRFS_FREE_INO_OBJECTID
vfs: fix kerneldoc for generic_fh_to_parent()
treewide: fix comment/printk/variable typos
ipr: fix small coding style issues
doc: fix broken utf8 encoding
nfs: comment fix
platform/x86: fix asus_laptop.wled_type module parameter
mfd: printk/comment fixes
doc: getdelays.c: remember to close() socket on error in create_nl_socket()
doc: aliasing-test: close fd on write error
mmc: fix comment typos
dma: fix comments
spi: fix comment/printk typos in spi
Coccinelle: fix typo in memdup_user.cocci
tmiofb: missing NULL pointer checks
tools: perf: Fix typo in tools/perf
tools/testing: fix comment / output typos
...
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This prepares *of_device_id.data becoming const. Without this change
the following warning would occur:
drivers/mmc/host/omap_hsmmc.c: In function 'omap_hsmmc_probe':
drivers/mmc/host/omap_hsmmc.c:1808: warning: initialization discards qualifiers from pointer target type
Acked-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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plat/board.h file is now empty - remove it.
Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Cc: Chris Ball <cjb@laptop.org>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: linux-mmc@vger.kernel.org
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Acked-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Consolidate the duplicated code around the handling of CMD_TIMEOUT,
CMD_CRC, DATA_TIMEOUT, DATA_CRC and CARD_ERR handling into a single
function.
This generally shrinks code bloat, but is also required for implementing
software based guard timers.
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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Flushing spurious IRQs from HSMMC IP is done twice in omap_hsmmc_irq
and omap_hsmmc_do_irq. Consolidate them to one location.
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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SYSCONFIG register of HSMMC IP is managed by the omap hwmod
abstraction layer. Resetting the IP and configuring the correct
SYSCONFIG mode is centrally managed by hwmod.
Remove code which manipulates IP reset and SYSCONFIG directly in
the driver.
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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Some straight forward cleanup of unnecessary #include's and host
variables. Some of the verbose and redundant debug messages are
converted to use dev_vdbg.
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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1/ If regulator_get fails, return an error. This is important if
it failed with EPROBE_DEFER, as the probe needs to be deferred.
2/ Don't set .set_power until the regulator has been found, or
the deferred probe will not bother calling omap_hsmmc_reg_get().
Signed-off-by: NeilBrown <neilb@suse.de>
Acked-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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Correct spelling typo in drivers/mmc
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Pull ARM DMA engine updates from Russell King:
"This looks scary at first glance, but what it is is:
- a rework of the sa11x0 DMA engine driver merged during the previous
cycle, to extract a common set of helper functions for DMA engine
implementations.
- conversion of amba-pl08x.c to use these helper functions.
- addition of OMAP DMA engine driver (using these helper functions),
and conversion of some of the OMAP DMA users to use DMA engine.
Nothing in the helper functions is ARM specific, so I hope that other
implementations can consolidate some of their code by making use of
these helpers.
This has been sitting in linux-next most of the merge cycle, and has
been tested by several OMAP folk. I've tested it on sa11x0 platforms,
and given it my best shot on my broken platforms which have the
amba-pl08x controller.
The last point is the addition to feature-removal-schedule.txt, which
will have a merge conflict. Between myself and TI, we're planning to
remove the old TI DMA implementation next year."
Fix up trivial add/add conflicts in Documentation/feature-removal-schedule.txt
and drivers/dma/{Kconfig,Makefile}
* 'dmaengine' of git://git.linaro.org/people/rmk/linux-arm: (53 commits)
ARM: 7481/1: OMAP2+: omap2plus_defconfig: enable OMAP DMA engine
ARM: 7464/1: mmc: omap_hsmmc: ensure probe returns error if DMA channel request fails
Add feature removal of old OMAP private DMA implementation
mtd: omap2: remove private DMA API implementation
mtd: omap2: add DMA engine support
spi: omap2-mcspi: remove private DMA API implementation
spi: omap2-mcspi: add DMA engine support
ARM: omap: remove mmc platform data dma_mask and initialization
mmc: omap: remove private DMA API implementation
mmc: omap: add DMA engine support
mmc: omap_hsmmc: remove private DMA API implementation
mmc: omap_hsmmc: add DMA engine support
dmaengine: omap: add support for cyclic DMA
dmaengine: omap: add support for setting fi
dmaengine: omap: add support for returning residue in tx_state method
dmaengine: add OMAP DMA engine driver
dmaengine: sa11x0-dma: add cyclic DMA support
dmaengine: sa11x0-dma: fix DMA residue support
dmaengine: PL08x: ensure all descriptors are freed when channel is released
dmaengine: PL08x: get rid of write only pool_ctr and free_txd locking
...
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request fails
If dma_request_channel() fails (e.g. because DMA enine is not built
into the kernel), the return value from probe is zero causing the
driver to be bound to the device even though probe failed.
To fix, ensure that probe returns an error value when a DMA channel
request fail.
Signed-off-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Add DMA engine support to the OMAP driver. This supplements the
private DMA API implementation contained within this driver, and the
driver can be switched at build time between using DMA engine and the
private DMA API.
Tested-by: Tony Lindgren <tony@atomide.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Remove the private DMA API implementation from omap_hsmmc, making it
use entirely the DMA engine API.
Tested-by: Tony Lindgren <tony@atomide.com>
Tested-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Add DMA engine support to the OMAP HSMMC driver. This supplements the
private DMA API implementation contained within this driver, and the
driver can be switched at build time between using DMA engine and the
private DMA API.
Tested-by: Grazvydas Ignotas <notasas@gmail.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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If platform_get_resource_by_name() fails, driver probe is aborted an
should return an error so the driver is not bound to the device.
However, in the current error path of platform_get_resource_by_name(),
probe returns zero since the return value (ret) is not properly set.
With a zero return value, the driver core assumes probe was successful
and will bind the driver to the device.
Fix this by ensuring that probe returns an error code in this failure
path.
Signed-off-by: Kevin Hilman <khilman@ti.com>
Acked-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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In preparation for OMAP moving to the Common Clock Framework (CCF)
add clk_prepare() and clk_unprepare() for the hsmmc clocks.
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Acked-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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This patch reverts the commit dba3c29ea4a1d5d544.
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>
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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
...
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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