The commit, mmc: omap: clarify DDR timing mode between SD-UHS and eMMC,
switched omap_hsmmc to support MMC DDR mode instead of UHS DDR50 mode.
Add UHS DDR50 mode again and this time let's also keep the MMC DDR mode.
Fixes: 5438ad95a5 (mmc: omap: clarify DDR timing mode between SD-UHS and eMMC)
Reported-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
omap_hsmmc only supports one slot. So slot id is always zero, and
slot id was never used in the callbacks anyway
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Andreas Fenkart <afenkart@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
These callbacks are set during driver probe and not from the platform
init, -- evtl. they had been for oamp 1/2 -- for omap3 they are local
functions of the driver. These indirection could be dropped
altogether in favor of regular function calls TODO
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Andreas Fenkart <afenkart@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
this is needed when installing callbacks in the host struct and not
in the platform data, e.g. cover detect irq should be stored in
omap_hsmmc_host and not platform data
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Andreas Fenkart <afenkart@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
omap_hsmmc supports only one slot per controller, see OMAP_MMC_MAX_SLOTS.
This unnecessary indirection leads to confusion in the omap_hsmmc driver.
For example the card_detect callback is not installed by platform code
but from the driver probe function. So it should be a field of
omap_hsmmc_host. But since it is declared under the platform slot while
the drivers struct omap_hsmmc_host has no slot abstraction, this looks
like a bug, especially when not familiar that this driver only supports
1 slot anyway.
Either we should add a slot abstraction to omap_hsmmc_host or remove
it from the platform data struct. Removed since slot multiplexing is
an un-implemented feature
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Andreas Fenkart <afenkart@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
these callbacks are not set, probably legacy omap 1/2 features
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Andreas Fenkart <afenkart@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
- omap mmc driver supports multiplexing, omap_mmc_hs doesn't
this leads to one of the major confusions in the omap_hsmmc driver
- platform data should be read-only for the driver
most callbacks are not set by the omap3 platform init code while still
required. So they are set from the driver probe function, which is against
the paradigm that platform-data should not be modified by the driver
typical examples are card_detect, read_only callbacks
un-bundling by searching for driver name \"omap_hsmmc in the
arch/arm folder. omap_hsmmc_platform_data is not initialized directly,
but from omap2_hsmmc_info, which is defined in a separate header file
not touched by this patch
hwmod includes platform headers to declare features of the platform. All
the declared features are prefixed OMAP_HSMMC. There is no need to
include platform header from hwmod other except for feature defines
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Andreas Fenkart <afenkart@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Now, omap_hsmmc can use .multi_io_quirk callback
instead of MMC_CAP2_NO_MULTI_READ flags.
let's use it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This patch removes the superflous .owner field for drivers which
use the module_platform_driver API, as this is overriden in
platform_driver_register anyway.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The am335x can't detect pending cirq in PM runtime suspend.
This patch reconfigures dat1 as a GPIO before going to suspend.
SDIO interrupts are detected with the GPIO, the GPIO will only wake
the module from suspend, SDIO irq detection will still happen through the
IP block.
Idea of remuxing the pins by Tony Lindgren. Code contributions from
Tony Lindgren and Balaji T K <balajitk@ti.com>
Signed-off-by: Andreas Fenkart <afenkart@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
These are predefined states of the driver model. When not present,
as if not set in the device tree, they become no-ops.
Explicitly selecting the default state is not needed since the
device core layer sets pin mux to "default" state before probe.
This is not the simplest implementation, on AM335x at least, we could
switch to idle at any point in the suspend hook, only the default state
needs to be set before writing to the irq registers or an IRQ might get
lost.
Acked-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Andreas Fenkart <afenkart@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
On multicores, an sdio irq handler could be running in parallel to
runtime suspend. In the worst case it could be waiting for the spinlock
held by the runtime suspend. When runtime suspend is complete and the
functional clock (fclk) turned off, the irq handler will continue and
cause a SIGBUS on the first register access.
Acked-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Andreas Fenkart <afenkart@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
To detect sdio irqs properly without spurious events,
OMAP4 needs IWE in CON and CTPL, CLKEXTFREE in HCTL to be set
Tested-by: Andreas Fenkart <afenkart@gmail.com>
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Add SDIO IRQ entries to debugfs entry. Note that PSTATE shows current
state of data lines, incl. SDIO IRQ pending
Signed-off-by: Andreas Fenkart <afenkart@gmail.com>
Acked-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
There have been various patches floating around for enabling
the SDIO IRQ for hsmmc, but none of them ever got merged.
Probably the reason for not merging the SDIO interrupt patches
has been the lack of wake-up path for SDIO on some omaps that
has also needed remuxing the SDIO DAT1 line to a GPIO making
the patches complex.
This patch adds the minimal SDIO IRQ support to hsmmc for
omaps that do have the wake-up path. For those omaps, the
DAT1 line need to have the wake-up enable bit set, and the
wake-up interrupt is the same as for the MMC controller.
This patch has been tested on am3730 es1.2 with mwifiex
connected to MMC3 with mwifiex waking to Ethernet traffic
from off-idle mode. Note that for omaps that do not have
the SDIO wake-up path, this patch will not work for idle
modes and further patches for remuxing DAT1 to GPIO are
needed.
Based on earlier patches [1][2] by David Vrabel
<david.vrabel@csr.com>, Steve Sakoman <steve@sakoman.com>
For now, only support SDIO interrupt if we are booted with
a separate wake-irq configued via device tree. This is
because omaps need the wake-irq for idle states, and some
omaps need special quirks. And we don't want to add new
legacy mux platform init code callbacks any longer as we
are moving to DT based booting anyways.
To use it, you need to specify the wake-irq using the
interrupts-extended property.
[1] http://www.sakoman.com/cgi-bin/gitweb.cgi?p=linux.git;a=commitdiff_plain;h=010810d22f6f49ac03da4ba384969432e0320453
[2] http://comments.gmane.org/gmane.linux.kernel.mmc/20446
Acked-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Andreas Fenkart <afenkart@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
moving dmaengine consumer specific function to omap-dmaengine.h
to Resolve build failure seen with sh-allmodconfig:
include/linux/omap-dma.h:171:8: error: expected identifier before numeric constant
make[4]: *** [drivers/mmc/host/omap_hsmmc.o] Error 1
Cc: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Balaji T K <balajitk@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
Check for set block count command fails always since host->cmd is set
to NULL in the same function incorrectly. Correct host->cmd usage properly.
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
With devm_ioremap_resource conversion release_mem_region, iounmap can be
removed in clean up path
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
With devm_request_threaded_irq conversion free_irq can be removed
in clean up path
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
With devm_request_irq conversion free_irq can be removed in clean up path
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
With devm_clk_get conversion clk_put can be removed in clean up path
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
Add set block count command support for close ended multiblock read/write.
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <chris@printf.net>
split start dma function into setup and start dma to keep track of
host_cookie when cmd23 support is enabled along with async request.
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <chris@printf.net>
mrq is not populated for set block count(cmd23) command.
Use block read/write mmc_commond pointer for request done and
avoid NULL pointer access in error case for sbc (cmd23).
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <chris@printf.net>
clk_get_rate throws DEBUG_LOCKS_WARN_ON(in_interrupt()) warning
if called from interrupt context.
use cached clock rate in set_data_timeout, so that
set_data_timeout can be called from interrupt context.
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <chris@printf.net>
Remove redundant reset done check since omap hwmod layer ensures IP reset.
Signed-off-by: Balaji T K <balajitk@ti.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Chris Ball <chris@printf.net>
of_get_hsmmc_pdata returns a pointer, returning NULL is invalid,
return ERR_PTR for error case.
Signed-off-by: Balaji T K <balajitk@ti.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Chris Ball <chris@printf.net>
remove pbias workaround
Signed-off-by: Balaji T K <balajitk@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: Florian Vaussard <florian.vaussard@epfl.ch>
Tested-by: Stefan Roese <sr@denx.de>
Signed-off-by: Chris Ball <chris@printf.net>
In DT case, PBAIS registers are programmed via regulator,
use regulator APIs to control PBIAS.
Signed-off-by: Balaji T K <balajitk@ti.com>
Tested-by: Florian Vaussard <florian.vaussard@epfl.ch>
Tested-by: Stefan Roese <sr@denx.de>
Signed-off-by: Chris Ball <chris@printf.net>
handle vcc and vcc_aux independently to reduce indent.
Signed-off-by: Balaji T K <balajitk@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: Florian Vaussard <florian.vaussard@epfl.ch>
Tested-by: Stefan Roese <sr@denx.de>
Signed-off-by: Chris Ball <chris@printf.net>
Use devm_regulator API, while at it use
devm_regulator_get_optional for optional vmmc_aux supply
Signed-off-by: Balaji T K <balajitk@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: Florian Vaussard <florian.vaussard@epfl.ch>
Tested-by: Stefan Roese <sr@denx.de>
Signed-off-by: Chris Ball <chris@printf.net>
This should probably be done implicitly through mmc_of_parse(), but that
doesn't play well along with the multi-slot model the hsmmc driver
features. Hence, for now, do it manually. The properties are already
documented in Documentation/devicetree/bindings/mmc/mmc.txt.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <chris@printf.net>
When device is booted using devicetree, platforms impacted by Erratum
2.1.1.128 is not detected easily in the mmc driver. This erratum
indicates that the module cannot do multi-block transfers. Platforms
such as LDP which use OMAP3 ES revision prior to ES3.0 are impacted by
this.
Provide a new compatible property "ti,omap3-pre-es3-hsmmc" to allow
driver to determine if driver needs to implement quirks associated
with the specific module version (primarily because the IP revision
information is not sufficient for the same).
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <chris@printf.net>
Static checkers complain that testing for both "next" and "!next" is
duplicative.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <chris@printf.net>
Suspend and resume of cards are handled by the protocol layer and
consequently the mmc_suspend|resume_host APIs are marked as deprecated.
While moving away from using the deprecated APIs, there are nothing
left to be done for the suspend and resume callbacks, so remove them.
Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Cc: linux-omap@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
With lazy disable gone, no_off is not used any more in omap_hsmmc
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
clock divisor can take a max value of 1023. Update code so that card
init can be handled at f_min even at higher IP clock frequencies from
which clock to the card is derived.
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
With HSMMC_HAS_UPDATED_RESET reset of cmd/data (SRC/SRD) can be to
quick and can be missed resulting in wait for software timeout.
With cpu_relax timeout can be long and unpredictable. Use udelay
instead for timeout implementation.
Reported-by: Yuzheng Ma <mayuzheng@kedacom.com>
Tested-by: Yuzheng Ma <mayuzheng@kedacom.com>
Reviewed-by: Hein Tibosch <hein_tibosch@yahoo.es>
Signed-off-by: Jianpeng Ma <majianpeng@gmail.com>
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
We want to get rid of the omap specific platform init code
callbacks as they don't play nice with device tree.
Convert the context loss check to be based on a
register state detection instead.
Cc: Andreas Fenkart <afenkart@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
[add check for CON and HCTL in context save and restore function]
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
pbias_disable is set to protect the mmc pbias i/o cells in DT boot
by preventing voltage switch. Currently pbias_disable is enabled only
for omap3 and not for omap4 due to reg_offset difference of 0x100.
Enable pbias_disable for omap4+ too by using res->start
which does not include the reg_offset.
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Commit 1f6b9fa40e consolidated writes to
the STAT register in one location, moving them from omap_hsmmc_do_irq()
to omap_hsmmc_irq(). This move has the unwanted side effect that the
controller status flags are potentially cleared after a new command has
been started as a consequence of reading the previous status flags.
This means that if the new command changes the status flags before the
IRQ routine returns, those flags may be cleared without handling the
event which asserted them, and thus missing the event.
Move the writing of the STAT register back in omap_hsmmc_do_irq(),
before handling the status flags which generated the interrupt.
Signed-off-by: Francesco Lavra <francescolavra.fl@gmail.com>
Reviewed-and-Tested-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
omap_hsmmc.c depends on <linux/sizes.h> being included indirectly by
another header. Once we enable COMPILE_TEST for this driver, we might
compile under architectures which won't include <linux/sizes.h> for us.
In fact, one such case is x86.
In order to prevent compile breakages, let's explicitly include
<linux/sizes.h>.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Acked-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d06310
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Sonic Zhang <sonic.zhang@analog.com>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Chris Ball <cjb@laptop.org>
MMC driver probe will abort for DT case because of failed
platform_get_resource_byname() lookup. Fix it by skipping resource
lookup byname for device tree build.
Issue is hidden because hwmod populates the IO resources which
helps to succeed platform_get_resource_byname() and probe.
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Convert dmaengine channel requests to use
dma_request_slave_channel_compat(). This supports platforms booting
with or without DT populated.
Signed-off-by: Matt Porter <mporter@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Otherwise SDIO cards won't necessarily work when booted with
device tree as we will never power down the SDIO cards. This
means the SDIO card reset does not happen which at least some
WLAN controllers expect to happen with ifconfig wlan0 down.
The PBIAS voltage is only available for the first controller
instance, so let's limit the PBIAS workaround to the first
controller only.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Tested-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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>
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.
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Merge tag 'headers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
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
...
Ulf Hansson