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git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
Pull pwm changes from Thierry Reding:
"The patches for this release cycle include various enhancements
(device tree support, better compile coverage, ...) for existing
drivers. There is a new driver for Atmel SoCs.
Various drivers as well as the sysfs support received minor fixes and
cleanups"
* tag 'pwm/for-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
pwm: tiecap: Remove duplicate put_sync call
pwm: tiehrpwm: use dev_err() instead of pr_err()
pwm: pxa: remove unnecessary space before tabs
pwm: ep93xx: split module author names
pwm: use seq_puts() instead of seq_printf()
pwm: atmel-pwm: Do not unprepare clock after successful registration
of: Add Atmel PWM controller device tree binding
pwm: atmel-pwm: Add Atmel PWM controller driver
backlight: pwm_bl: Remove error message upon devm_kzalloc() failure
pwm: pca9685: depends on I2C rather than REGMAP_I2C
pwm: renesas-tpu: Enable driver compilation with COMPILE_TEST
pwm: jz4740: Use devm_clk_get()
pwm: jz4740: Pass device to clk_get()
pwm: sysfs: Convert to use ATTRIBUTE_GROUPS macro
pwm: pxa: Add device tree support
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Remove duplicate 'pm_runtime_put_sync' in the remove path.
Signed-off-by: Sourav Poddar <sourav.poddar@ti.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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Use dev_err() instead of pr_err() to provide a better message
to userspace.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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Remove unnecessary space before tabs in order to fix the following
checkpatch warning.
WARNING: please, no space before tabs
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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Split module author names in order to fix the following
checkpatch warning.
WARNING: quoted string split across lines
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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For a constant format without additional arguments, use seq_puts()
instead of seq_printf(). Also, the following checkpatch warning is
fixed.
WARNING: Prefer seq_puts to seq_printf
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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When the PWM controller is registered successfully, the clock can not
unprepare, so fix it.
Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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Add a PWM framework driver for the PWM controller found on Atmel SoCs.
Signed-off-by: Bo Shen <voice.shen@atmel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
[thierry.reding: coding style and other minor cleanups]
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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No need to have a specific OOM message, since there is generic MM out of memory
message in place.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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REGMAP_I2C is not a visible config option.
Thus make PWM_PCA9685 depend on I2c and then select REGMAP_I2C.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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This helps increasing build testing coverage.
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: linux-pwm@vger.kernel.org
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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Using the managed version of clk_get() makes the code a bit shorter and the
error paths less complicated.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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In preparation to switching the jz4740 clk driver to the common clk framework
make sure to pass the device to clk_get().
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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Use new ATTRIBUTE_GROUPS macro to reduce the number of lines of code.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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This patch adds device tree support to the PXA's PWM driver. Nothing
needs to be extracted from the device tree node by the PWM device.
Client devices need only specify the period; the per-chip index is
implicitly zero because one device node must be present for each PWM
output in use. This approach is more convenient due to the wide
variability in the number of PWM channels present across the various PXA
variants, and is made possible by the fact that the register sets for
each PWM channel are segregated from each other. An of_xlate() method
is added to parse this single-cell node. The existing ID table is
reused for the match table data.
Tested on a Palm Treo 680 (both platform data and DT cases).
Signed-off-by: Mike Dunn <mikedunn@newsguy.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394
Pull firewire updates from Stefan Richter:
"IEEE 1394 (FireWire) subsystem changes:
- make remote debugging over 1394 a runtime option instead of a
buildtime option
- extend remote debug access past the 4 GB barrier on respectively
capable hardware
- documentation update"
* tag 'firewire-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
firewire: Enable remote DMA above 4 GB
firewire: ohci: Turn remote DMA support into a module parameter
Documentation/: update FireWire debugging documentation
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This makes all of a machine's memory accessible to remote debugging via
FireWire, using the physical response unit (i.e. RDMA) of OHCI-1394 link
layer controllers.
This requires actual support by the controller. The only ones currently
known to support it are Agere/LSI FW643. Most if not all other OHCI-1394
controllers do not implement the optional Physical Upper Bound register.
With them, RDMA will continue to be limited to the lowermost 4 GB.
firewire-ohci's startup message in the kernel log is augmented to tell
whether the controller does expose more than 4 GB to RDMA.
While OHCI-1394 allows for a maximum Physical Upper Bound of
0xffff'0000'0000 (near 256 TB), this implementation sets it to
0x8000'0000'0000 (128 TB) in order to avoid interference with applications
that require interrupt-served asynchronous request reception at
respectively low addresses.
Note, this change does not switch remote DMA on. It only increases the
range of remote access to all memory (instead of just 4 GB) whenever
remote DMA was switched on by other means. The latter is achieved by
setting firewire-ohci's remote_dma parameter, or if the physical DMA
filter is opened through firewire-sbp2.
Derived from patch "firewire: Enable physical DMA above 4GB" by
Peter Hurley <peter@hurleysoftware.com> from March 27, 2013.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
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This makes it possible to debug kernel over FireWire without the need to
recompile it.
[Stefan R: changed description from "...0" to "...N"]
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc
Pull MMC updates from Chris Ball:
"MMC highlights for 3.14:
Core:
- Avoid get_cd() on cards marked nonremovable
Drivers:
- arasan: New driver for controllers found in e.g. Xilinx Zynq SoC
- dwmmc: Support Hisilicon K3 SoC controllers
- esdhc-imx: Support for HS200 mode, DDR modes on MX6, runtime PM
- sdhci-pci: Support O2Micro/BayHubTech controllers used in laptops
like Lenovo ThinkPad W540, Dell Latitude E5440, Dell Latitude E6540
- tegra: Support Tegra124 SoCs"
* tag 'mmc-updates-for-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (55 commits)
mmc: sdhci-pci: Fix possibility of chip->fixes being null
mmc: sdhci-pci: Fix BYT sd card getting stuck in runtime suspend
mmc: sdhci: Allow for long command timeouts
mmc: sdio: add a quirk for broken SDIO_CCCR_INTx polling
mmc: sdhci: fix lockdep error in tuning routine
mmc: dw_mmc: k3: remove clk_table
mmc: dw_mmc: fix dw_mci_get_cd
mmc: dw_mmc: fix sparse non static symbol warning
mmc: sdhci-esdhc-imx: fix warning during module remove function
mmc: sdhci-esdhc-imx: fix access hardirq-unsafe lock in atomic context
mmc: core: sd: implement proper support for sd3.0 au sizes
mmc: atmel-mci: add vmmc-supply support
mmc: sdhci-pci: add broken HS200 quirk for Intel Merrifield
mmc: sdhci: add quirk for broken HS200 support
mmc: arasan: Add driver for Arasan SDHCI
mmc: dw_mmc: add dw_mmc-k3 for k3 platform
mmc: dw_mmc: use slot-gpio to handle cd pin
mmc: sdhci-pci: add support of O2Micro/BayHubTech SD hosts
mmc: sdhci-pci: break out definitions to header file
mmc: tmio: fixup compile error
...
Conflicts:
MAINTAINERS
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It is possible for chip->fixes to be null. Check before dereferencing it.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable <stable@vger.kernel.org> # 3.11+
Signed-off-by: Chris Ball <chris@printf.net>
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A host controller for a SD card may need a GPIO for card detect in order
to wake up from runtime suspend when a card is inserted. If that GPIO is
not configured, then the host controller will not wake up. Fix that for
the affected devices by not enabling runtime PM unless the GPIO is
successfully set up.
This affects BYT sd card host controller which had runtime PM enabled from
v3.11. For completeness, the MFD sd card host controller is flagged also.
The original patch before rebasing (see link below) was tested on v3.11.10
and v3.12.4 although the patch applied with some offsets and fuzz. The
original patch is here:
http://marc.info/?l=linux-mmc&m=138676702327057
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable <stable@vger.kernel.org> # 3.11+
Signed-off-by: Chris Ball <chris@printf.net>
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The driver has a timer with a 10 second timeout to catch devices that stop
responding. However it is possible for commands to take even longer than
that. Change the timer timeout to reflect the command timeout.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Chris Ball <chris@printf.net>
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Polling SDIO_CCCR_INTx could create a fake interrupt with Marvell
SD8797 card. Add a quirk to handle this case. The fixup here is
to issue a dummy CMD52 read to function 0 register 0xff, and this
dummy read must be right after SDIO_CCCR_INTx is read.
Patch has been verified on a dw_mmc controller (Samsung Chromebook)
with MMC_CAP_SDIO_IRQ disabled.
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Reviewed-by: Paul Stewart <pstew@chromium.org>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
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The sdhci_execute_tuning routine gets lock separately by
disable_irq(host->irq);
spin_lock(&host->lock);
It will cause the following lockdep error message since the &host->lock
could also be got in irq context.
Use spin_lock_irqsave/spin_unlock_restore instead to get rid of
this error message.
[ INFO: inconsistent lock state ]
3.13.0-rc1+ #287 Not tainted
---------------------------------
inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage.
kworker/u2:1/33 [HC0[0]:SC0[0]:HE1:SE1] takes:
(&(&host->lock)->rlock){?.-...}, at: [<8045f7f4>] sdhci_execute_tuning+0x4c/0x710
{IN-HARDIRQ-W} state was registered at:
[<8005f030>] mark_lock+0x140/0x6ac
[<80060760>] __lock_acquire+0xb30/0x1cbc
[<800620d0>] lock_acquire+0x70/0x84
[<8061d1c8>] _raw_spin_lock+0x30/0x40
[<804605cc>] sdhci_irq+0x24/0xa68
[<8006b1d4>] handle_irq_event_percpu+0x54/0x18c
[<8006b350>] handle_irq_event+0x44/0x64
[<8006e50c>] handle_fasteoi_irq+0xa0/0x170
[<8006a8f0>] generic_handle_irq+0x30/0x44
[<8000f238>] handle_IRQ+0x54/0xbc
[<8000864c>] gic_handle_irq+0x30/0x64
[<80013024>] __irq_svc+0x44/0x5c
[<80329bf4>] dev_vprintk_emit+0x50/0x58
[<80329c24>] dev_printk_emit+0x28/0x30
[<80329fec>] __dev_printk+0x4c/0x90
[<8032a180>] dev_err+0x3c/0x48
[<802dd4f0>] _regulator_get+0x158/0x1cc
[<802dd5b4>] regulator_get_optional+0x18/0x1c
[<80461df4>] sdhci_add_host+0x42c/0xbd8
[<80464820>] sdhci_esdhc_imx_probe+0x378/0x67c
[<8032ee88>] platform_drv_probe+0x20/0x50
[<8032d48c>] driver_probe_device+0x118/0x234
[<8032d690>] __driver_attach+0x9c/0xa0
[<8032b89c>] bus_for_each_dev+0x68/0x9c
[<8032cf44>] driver_attach+0x20/0x28
[<8032cbc8>] bus_add_driver+0x148/0x1f4
[<8032dce0>] driver_register+0x80/0x100
[<8032ee54>] __platform_driver_register+0x50/0x64
[<8084b094>] sdhci_esdhc_imx_driver_init+0x18/0x20
[<80008980>] do_one_initcall+0x108/0x16c
[<8081cca4>] kernel_init_freeable+0x10c/0x1d0
[<80611b28>] kernel_init+0x10/0x120
[<8000e9c8>] ret_from_fork+0x14/0x2c
irq event stamp: 805
hardirqs last enabled at (805): [<8061d43c>] _raw_spin_unlock_irqrestore+0x38/0x4c
hardirqs last disabled at (804): [<8061d2c8>] _raw_spin_lock_irqsave+0x24/0x54
softirqs last enabled at (570): [<8002b824>] __do_softirq+0x1c4/0x290
softirqs last disabled at (561): [<8002bcf4>] irq_exit+0xb4/0x10c
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&(&host->lock)->rlock);
<Interrupt>
lock(&(&host->lock)->rlock);
*** DEADLOCK ***
2 locks held by kworker/u2:1/33:
#0: (kmmcd){.+.+..}, at: [<8003db18>] process_one_work+0x128/0x468
#1: ((&(&host->detect)->work)){+.+...}, at: [<8003db18>] process_one_work+0x128/0x468
stack backtrace:
CPU: 0 PID: 33 Comm: kworker/u2:1 Not tainted 3.13.0-rc1+ #287
Workqueue: kmmcd mmc_rescan
Backtrace:
[<80012160>] (dump_backtrace+0x0/0x10c) from [<80012438>] (show_stack+0x18/0x1c)
r6:bfad0900 r5:00000000 r4:8088ecc8 r3:bfad0900
[<80012420>] (show_stack+0x0/0x1c) from [<806169ec>] (dump_stack+0x84/0x9c)
[<80616968>] (dump_stack+0x0/0x9c) from [<806147b4>] (print_usage_bug+0x260/0x2d0)
r5:8076ba88 r4:80977410
[<80614554>] (print_usage_bug+0x0/0x2d0) from [<8005f0d0>] (mark_lock+0x1e0/0x6ac)
r9:8005e678 r8:00000000 r7:bfad0900 r6:00001015 r5:bfad0cd0
r4:00000002
[<8005eef0>] (mark_lock+0x0/0x6ac) from [<80060234>] (__lock_acquire+0x604/0x1cbc)
[<8005fc30>] (__lock_acquire+0x0/0x1cbc) from [<800620d0>] (lock_acquire+0x70/0x84)
[<80062060>] (lock_acquire+0x0/0x84) from [<8061d1c8>] (_raw_spin_lock+0x30/0x40)
r7:00000000 r6:bfb63000 r5:00000000 r4:bfb60568
[<8061d198>] (_raw_spin_lock+0x0/0x40) from [<8045f7f4>] (sdhci_execute_tuning+0x4c/0x710)
r4:bfb60000
[<8045f7a8>] (sdhci_execute_tuning+0x0/0x710) from [<80453454>] (mmc_sd_init_card+0x5f8/0x660)
[<80452e5c>] (mmc_sd_init_card+0x0/0x660) from [<80453748>] (mmc_attach_sd+0xb4/0x180)
r9:bf92d400 r8:8065f364 r7:00061a80 r6:bfb60000 r5:8065f358
r4:bfb60000
[<80453694>] (mmc_attach_sd+0x0/0x180) from [<8044d9f8>] (mmc_rescan+0x284/0x2f0)
r5:8065f358 r4:bfb602f8
[<8044d774>] (mmc_rescan+0x0/0x2f0) from [<8003db94>] (process_one_work+0x1a4/0x468)
r8:00000000 r7:bfb55eb0 r6:bf80dc00 r5:bfb602f8 r4:bfb35980
r3:8044d774
[<8003d9f0>] (process_one_work+0x0/0x468) from [<8003e850>] (worker_thread+0x118/0x3e0)
[<8003e738>] (worker_thread+0x0/0x3e0) from [<80044de0>] (kthread+0xd4/0xf0)
[<80044d0c>] (kthread+0x0/0xf0) from [<8000e9c8>] (ret_from_fork+0x14/0x2c)
r7:00000000 r6:00000000 r5:80044d0c r4:bfb37b40
Signed-off-by: Dong Aisheng <b29396@freescale.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chris Ball <chris@printf.net>
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Remove clk_table and directly use ios->clock as clock source rate.
Abstract init clock rate and max clock limitation in clk.c
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Chris Ball <chris@printf.net>
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bf626e5550f24aec ("mmc: dw_mmc: use slot-gpio to handle cd pin") caused
CDETECT to be ignored, since negated return value of mmc_gpio_get_cd(mmc)
can not be checked by IS_ERR_VALUE.
Also, add spin_lock_bh(&host->lock) for atomic access to
DW_MMC_CARD_PRESENT, otherwise sd detect may occasionally fail.
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Reported-by: Kevin Hilman <khilman@linaro.org>
Reviewed-by: Sachin Kamat <sachin.kamat@linaro.org>
Tested-by: Sachin Kamat <sachin.kamat@linaro.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Chris Ball <chris@printf.net>
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Fixes the following sparse warning:
drivers/mmc/host/dw_mmc-k3.c:116:1: warning:
symbol 'dw_mci_k3_pmops' was not declared. Should it be static?
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Chris Ball <chris@printf.net>
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Since the clock is managed by runtime pm currently, we do not need
disable it again during driver remove function, or it will cause
clock disable count mismatch issue since the clocks have already been disabled.
The issue can be simply reproduced by unbind the devices via sysfs.
mx6slevk:/sys/bus/platform/drivers/sdhci-esdhc-imx# echo 2194000.usdhc > unbind
mmc1: card aaaa removed
------------[ cut here ]------------
WARNING: CPU: 0 PID: 657 at drivers/clk/clk.c:842 __clk_disable+0x68/0x88()
Modules linked in:
CPU: 0 PID: 657 Comm: sh Not tainted 3.13.0-rc1+ #285
Backtrace:
[<80012160>] (dump_backtrace+0x0/0x10c) from [<80012438>] (show_stack+0x18/0x1c)
r6:80481370 r5:00000000 r4:8088ecc8 r3:00000000
[<80012420>] (show_stack+0x0/0x1c) from [<80616b14>] (dump_stack+0x84/0x9c)
[<80616a90>] (dump_stack+0x0/0x9c) from [<80027158>] (warn_slowpath_common+0x70/0x94)
r5:00000009 r4:00000000
[<800270e8>] (warn_slowpath_common+0x0/0x94) from [<80027220>] (warn_slowpath_null+0x24/0x2c)
r8:bec4ff78 r7:0000000e r6:bf91d800 r5:bf81d080 r4:bf81d080
[<800271fc>] (warn_slowpath_null+0x0/0x2c) from [<80481370>] (__clk_disable+0x68/0x88)
[<80481308>] (__clk_disable+0x0/0x88) from [<8048148c>] (clk_disable+0x20/0x2c)
r4:200f0113 r3:bf95ec00
[<8048146c>] (clk_disable+0x0/0x2c) from [<80463bd8>] (sdhci_esdhc_imx_remove+0x64/0xa4)
r5:bf81d080 r4:bfabb010
[<80463b74>] (sdhci_esdhc_imx_remove+0x0/0xa4) from [<8032e82c>] (platform_drv_remove+0x20/0x24)
r6:808ae0e0 r5:808ae0e0 r4:bf91d810 r3:80463b74
[<8032e80c>] (platform_drv_remove+0x0/0x24) from [<8032d010>] (__device_release_driver+0x78/0xd0)
[<8032cf98>] (__device_release_driver+0x0/0xd0) from [<8032d090>] (device_release_driver+0x28/0x34)
r5:bf91d810 r4:bf91d844
[<8032d068>] (device_release_driver+0x0/0x34) from [<8032c0c8>] (unbind_store+0x80/0xc4)
r5:bf91d810 r4:80899ba0
[<8032c048>] (unbind_store+0x0/0xc4) from [<8032b648>] (drv_attr_store+0x28/0x34)
r7:bed73100 r6:0000000e r5:00000000 r4:8032b620
[<8032b620>] (drv_attr_store+0x0/0x34) from [<80140580>] (sysfs_write_file+0x1b0/0x1e4)
[<801403d0>] (sysfs_write_file+0x0/0x1e4) from [<800dcda0>] (vfs_write+0xb4/0x190)
[<800dccec>] (vfs_write+0x0/0x190) from [<800dd3e4>] (SyS_write+0x44/0x80)
r9:0000000e r8:00000000 r7:01a00408 r6:bf3b1c00 r5:00000000
r4:00000000
[<800dd3a0>] (SyS_write+0x0/0x80) from [<8000e900>] (ret_fast_syscall+0x0/0x48)
r9:bec4e000 r8:8000eac4 r7:00000004 r6:76f5fb40 r5:01a00408
r4:0000000e
---[ end trace a0897d268e6233b2 ]---
If without runtime pm, we just run as before to match the clock enable
in probe function.
Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
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Sometimes we may meet the following lockdep issue.
The root cause is .set_clock callback is executed with spin_lock_irqsave
in sdhci_do_set_ios. However, the IMX set_clock callback will try to access
clk_get_rate which is using a mutex lock.
The fix avoids access mutex in .set_clock callback by initializing the
pltfm_host->clock at probe time and use it later instead of calling
clk_get_rate again in atomic context.
[ INFO: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected ]
3.13.0-rc1+ #285 Not tainted
------------------------------------------------------
kworker/u8:1/29 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
(prepare_lock){+.+...}, at: [<80480b08>] clk_prepare_lock+0x44/0xe4
and this task is already holding:
(&(&host->lock)->rlock#2){-.-...}, at: [<804611f4>] sdhci_do_set_ios+0x20/0x720
which would create a new lock dependency:
(&(&host->lock)->rlock#2){-.-...} -> (prepare_lock){+.+...}
but this new dependency connects a HARDIRQ-irq-safe lock:
(&(&host->lock)->rlock#2){-.-...}
... which became HARDIRQ-irq-safe at:
[<8005f030>] mark_lock+0x140/0x6ac
[<80060760>] __lock_acquire+0xb30/0x1cbc
[<800620d0>] lock_acquire+0x70/0x84
[<8061d2f0>] _raw_spin_lock+0x30/0x40
[<80460668>] sdhci_irq+0x24/0xa68
[<8006b1d4>] handle_irq_event_percpu+0x54/0x18c
[<8006b350>] handle_irq_event+0x44/0x64
[<8006e50c>] handle_fasteoi_irq+0xa0/0x170
[<8006a8f0>] generic_handle_irq+0x30/0x44
[<8000f238>] handle_IRQ+0x54/0xbc
[<8000864c>] gic_handle_irq+0x30/0x64
[<80013024>] __irq_svc+0x44/0x5c
[<80614c58>] printk+0x38/0x40
[<804622a8>] sdhci_add_host+0x844/0xbcc
[<80464948>] sdhci_esdhc_imx_probe+0x378/0x67c
[<8032ee88>] platform_drv_probe+0x20/0x50
[<8032d48c>] driver_probe_device+0x118/0x234
[<8032d690>] __driver_attach+0x9c/0xa0
[<8032b89c>] bus_for_each_dev+0x68/0x9c
[<8032cf44>] driver_attach+0x20/0x28
[<8032cbc8>] bus_add_driver+0x148/0x1f4
[<8032dce0>] driver_register+0x80/0x100
[<8032ee54>] __platform_driver_register+0x50/0x64
[<8084b094>] sdhci_esdhc_imx_driver_init+0x18/0x20
[<80008980>] do_one_initcall+0x108/0x16c
[<8081cca4>] kernel_init_freeable+0x10c/0x1d0
[<80611c50>] kernel_init+0x10/0x120
[<8000e9c8>] ret_from_fork+0x14/0x2c
to a HARDIRQ-irq-unsafe lock:
(prepare_lock){+.+...}
... which became HARDIRQ-irq-unsafe at:
... [<8005f030>] mark_lock+0x140/0x6ac
[<8005f604>] mark_held_locks+0x68/0x12c
[<8005f780>] trace_hardirqs_on_caller+0xb8/0x1d8
[<8005f8b4>] trace_hardirqs_on+0x14/0x18
[<8061a130>] mutex_trylock+0x180/0x20c
[<80480ad8>] clk_prepare_lock+0x14/0xe4
[<804816a4>] clk_notifier_register+0x28/0xf0
[<80015120>] twd_clk_init+0x50/0x68
[<80008980>] do_one_initcall+0x108/0x16c
[<8081cca4>] kernel_init_freeable+0x10c/0x1d0
[<80611c50>] kernel_init+0x10/0x120
[<8000e9c8>] ret_from_fork+0x14/0x2c
other info that might help us debug this:
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(prepare_lock);
local_irq_disable();
lock(&(&host->lock)->rlock#2);
lock(prepare_lock);
<Interrupt>
lock(&(&host->lock)->rlock#2);
*** DEADLOCK ***
3 locks held by kworker/u8:1/29:
#0: (kmmcd){.+.+.+}, at: [<8003db18>] process_one_work+0x128/0x468
#1: ((&(&host->detect)->work)){+.+.+.}, at: [<8003db18>] process_one_work+0x128/0x468
#2: (&(&host->lock)->rlock#2){-.-...}, at: [<804611f4>] sdhci_do_set_ios+0x20/0x720
the dependencies between HARDIRQ-irq-safe lock and the holding lock:
-> (&(&host->lock)->rlock#2){-.-...} ops: 330 {
IN-HARDIRQ-W at:
[<8005f030>] mark_lock+0x140/0x6ac
[<80060760>] __lock_acquire+0xb30/0x1cbc
[<800620d0>] lock_acquire+0x70/0x84
[<8061d2f0>] _raw_spin_lock+0x30/0x40
[<80460668>] sdhci_irq+0x24/0xa68
[<8006b1d4>] handle_irq_event_percpu+0x54/0x18c
[<8006b350>] handle_irq_event+0x44/0x64
[<8006e50c>] handle_fasteoi_irq+0xa0/0x170
[<8006a8f0>] generic_handle_irq+0x30/0x44
[<8000f238>] handle_IRQ+0x54/0xbc
[<8000864c>] gic_handle_irq+0x30/0x64
[<80013024>] __irq_svc+0x44/0x5c
[<80614c58>] printk+0x38/0x40
[<804622a8>] sdhci_add_host+0x844/0xbcc
[<80464948>] sdhci_esdhc_imx_probe+0x378/0x67c
[<8032ee88>] platform_drv_probe+0x20/0x50
[<8032d48c>] driver_probe_device+0x118/0x234
[<8032d690>] __driver_attach+0x9c/0xa0
[<8032b89c>] bus_for_each_dev+0x68/0x9c
[<8032cf44>] driver_attach+0x20/0x28
[<8032cbc8>] bus_add_driver+0x148/0x1f4
[<8032dce0>] driver_register+0x80/0x100
[<8032ee54>] __platform_driver_register+0x50/0x64
[<8084b094>] sdhci_esdhc_imx_driver_init+0x18/0x20
[<80008980>] do_one_initcall+0x108/0x16c
[<8081cca4>] kernel_init_freeable+0x10c/0x1d0
[<80611c50>] kernel_init+0x10/0x120
[<8000e9c8>] ret_from_fork+0x14/0x2c
IN-SOFTIRQ-W at:
[<8005f030>] mark_lock+0x140/0x6ac
[<80060204>] __lock_acquire+0x5d4/0x1cbc
[<800620d0>] lock_acquire+0x70/0x84
[<8061d40c>] _raw_spin_lock_irqsave+0x40/0x54
[<8045e4a4>] sdhci_tasklet_finish+0x1c/0x120
[<8002b538>] tasklet_action+0xa0/0x15c
[<8002b778>] __do_softirq+0x118/0x290
[<8002bcf4>] irq_exit+0xb4/0x10c
[<8000f240>] handle_IRQ+0x5c/0xbc
[<8000864c>] gic_handle_irq+0x30/0x64
[<80013024>] __irq_svc+0x44/0x5c
[<80614c58>] printk+0x38/0x40
[<804622a8>] sdhci_add_host+0x844/0xbcc
[<80464948>] sdhci_esdhc_imx_probe+0x378/0x67c
[<8032ee88>] platform_drv_probe+0x20/0x50
[<8032d48c>] driver_probe_device+0x118/0x234
[<8032d690>] __driver_attach+0x9c/0xa0
[<8032b89c>] bus_for_each_dev+0x68/0x9c
[<8032cf44>] driver_attach+0x20/0x28
[<8032cbc8>] bus_add_driver+0x148/0x1f4
[<8032dce0>] driver_register+0x80/0x100
[<8032ee54>] __platform_driver_register+0x50/0x64
[<8084b094>] sdhci_esdhc_imx_driver_init+0x18/0x20
[<80008980>] do_one_initcall+0x108/0x16c
[<8081cca4>] kernel_init_freeable+0x10c/0x1d0
[<80611c50>] kernel_init+0x10/0x120
[<8000e9c8>] ret_from_fork+0x14/0x2c
INITIAL USE at:
[<8005f030>] mark_lock+0x140/0x6ac
[<8005ff0c>] __lock_acquire+0x2dc/0x1cbc
[<800620d0>] lock_acquire+0x70/0x84
[<8061d40c>] _raw_spin_lock_irqsave+0x40/0x54
[<804611f4>] sdhci_do_set_ios+0x20/0x720
[<80461924>] sdhci_set_ios+0x30/0x3c
[<8044cea0>] mmc_power_up+0x6c/0xd0
[<8044dac4>] mmc_start_host+0x60/0x70
[<8044eb3c>] mmc_add_host+0x60/0x88
[<8046225c>] sdhci_add_host+0x7f8/0xbcc
[<80464948>] sdhci_esdhc_imx_probe+0x378/0x67c
[<8032ee88>] platform_drv_probe+0x20/0x50
[<8032d48c>] driver_probe_device+0x118/0x234
[<8032d690>] __driver_attach+0x9c/0xa0
[<8032b89c>] bus_for_each_dev+0x68/0x9c
[<8032cf44>] driver_attach+0x20/0x28
[<8032cbc8>] bus_add_driver+0x148/0x1f4
[<8032dce0>] driver_register+0x80/0x100
[<8032ee54>] __platform_driver_register+0x50/0x64
[<8084b094>] sdhci_esdhc_imx_driver_init+0x18/0x20
[<80008980>] do_one_initcall+0x108/0x16c
[<8081cca4>] kernel_init_freeable+0x10c/0x1d0
[<80611c50>] kernel_init+0x10/0x120
[<8000e9c8>] ret_from_fork+0x14/0x2c
}
... key at: [<80e040e8>] __key.26952+0x0/0x8
... acquired at:
[<8005eb60>] check_usage+0x3d0/0x5c0
[<8005edac>] check_irq_usage+0x5c/0xb8
[<80060d38>] __lock_acquire+0x1108/0x1cbc
[<800620d0>] lock_acquire+0x70/0x84
[<8061a210>] mutex_lock_nested+0x54/0x3c0
[<80480b08>] clk_prepare_lock+0x44/0xe4
[<8048188c>] clk_get_rate+0x14/0x64
[<8046374c>] esdhc_pltfm_set_clock+0x20/0x2a4
[<8045d70c>] sdhci_set_clock+0x4c/0x498
[<80461518>] sdhci_do_set_ios+0x344/0x720
[<80461924>] sdhci_set_ios+0x30/0x3c
[<8044c390>] __mmc_set_clock+0x44/0x60
[<8044cd4c>] mmc_set_clock+0x10/0x14
[<8044f8f4>] mmc_init_card+0x1b4/0x1520
[<80450f00>] mmc_attach_mmc+0xb4/0x194
[<8044da08>] mmc_rescan+0x294/0x2f0
[<8003db94>] process_one_work+0x1a4/0x468
[<8003e850>] worker_thread+0x118/0x3e0
[<80044de0>] kthread+0xd4/0xf0
[<8000e9c8>] ret_from_fork+0x14/0x2c
the dependencies between the lock to be acquired and HARDIRQ-irq-unsafe lock:
-> (prepare_lock){+.+...} ops: 395 {
HARDIRQ-ON-W at:
[<8005f030>] mark_lock+0x140/0x6ac
[<8005f604>] mark_held_locks+0x68/0x12c
[<8005f780>] trace_hardirqs_on_caller+0xb8/0x1d8
[<8005f8b4>] trace_hardirqs_on+0x14/0x18
[<8061a130>] mutex_trylock+0x180/0x20c
[<80480ad8>] clk_prepare_lock+0x14/0xe4
[<804816a4>] clk_notifier_register+0x28/0xf0
[<80015120>] twd_clk_init+0x50/0x68
[<80008980>] do_one_initcall+0x108/0x16c
[<8081cca4>] kernel_init_freeable+0x10c/0x1d0
[<80611c50>] kernel_init+0x10/0x120
[<8000e9c8>] ret_from_fork+0x14/0x2c
SOFTIRQ-ON-W at:
[<8005f030>] mark_lock+0x140/0x6ac
[<8005f604>] mark_held_locks+0x68/0x12c
[<8005f7c8>] trace_hardirqs_on_caller+0x100/0x1d8
[<8005f8b4>] trace_hardirqs_on+0x14/0x18
[<8061a130>] mutex_trylock+0x180/0x20c
[<80480ad8>] clk_prepare_lock+0x14/0xe4
[<804816a4>] clk_notifier_register+0x28/0xf0
[<80015120>] twd_clk_init+0x50/0x68
[<80008980>] do_one_initcall+0x108/0x16c
[<8081cca4>] kernel_init_freeable+0x10c/0x1d0
[<80611c50>] kernel_init+0x10/0x120
[<8000e9c8>] ret_from_fork+0x14/0x2c
INITIAL USE at:
[<8005f030>] mark_lock+0x140/0x6ac
[<8005ff0c>] __lock_acquire+0x2dc/0x1cbc
[<800620d0>] lock_acquire+0x70/0x84
[<8061a0c8>] mutex_trylock+0x118/0x20c
[<80480ad8>] clk_prepare_lock+0x14/0xe4
[<80482af8>] __clk_init+0x1c/0x45c
[<8048306c>] _clk_register+0xd0/0x170
[<80483148>] clk_register+0x3c/0x7c
[<80483b4c>] clk_register_fixed_rate+0x88/0xd8
[<80483c04>] of_fixed_clk_setup+0x68/0x94
[<8084c6fc>] of_clk_init+0x44/0x68
[<808202b0>] time_init+0x2c/0x38
[<8081ca14>] start_kernel+0x1e4/0x368
[<10008074>] 0x10008074
}
... key at: [<808afebc>] prepare_lock+0x38/0x48
... acquired at:
[<8005eb94>] check_usage+0x404/0x5c0
[<8005edac>] check_irq_usage+0x5c/0xb8
[<80060d38>] __lock_acquire+0x1108/0x1cbc
[<800620d0>] lock_acquire+0x70/0x84
[<8061a210>] mutex_lock_nested+0x54/0x3c0
[<80480b08>] clk_prepare_lock+0x44/0xe4
[<8048188c>] clk_get_rate+0x14/0x64
[<8046374c>] esdhc_pltfm_set_clock+0x20/0x2a4
[<8045d70c>] sdhci_set_clock+0x4c/0x498
[<80461518>] sdhci_do_set_ios+0x344/0x720
[<80461924>] sdhci_set_ios+0x30/0x3c
[<8044c390>] __mmc_set_clock+0x44/0x60
[<8044cd4c>] mmc_set_clock+0x10/0x14
[<8044f8f4>] mmc_init_card+0x1b4/0x1520
[<80450f00>] mmc_attach_mmc+0xb4/0x194
[<8044da08>] mmc_rescan+0x294/0x2f0
[<8003db94>] process_one_work+0x1a4/0x468
[<8003e850>] worker_thread+0x118/0x3e0
[<80044de0>] kthread+0xd4/0xf0
[<8000e9c8>] ret_from_fork+0x14/0x2c
stack backtrace:
CPU: 2 PID: 29 Comm: kworker/u8:1 Not tainted 3.13.0-rc1+ #285
Workqueue: kmmcd mmc_rescan
Backtrace:
[<80012160>] (dump_backtrace+0x0/0x10c) from [<80012438>] (show_stack+0x18/0x1c)
r6:00000000 r5:00000000 r4:8088ecc8 r3:bfa11200
[<80012420>] (show_stack+0x0/0x1c) from [<80616b14>] (dump_stack+0x84/0x9c)
[<80616a90>] (dump_stack+0x0/0x9c) from [<8005ebb4>] (check_usage+0x424/0x5c0)
r5:80979940 r4:bfa29b44
[<8005e790>] (check_usage+0x0/0x5c0) from [<8005edac>] (check_irq_usage+0x5c/0xb8)
[<8005ed50>] (check_irq_usage+0x0/0xb8) from [<80060d38>] (__lock_acquire+0x1108/0x1cbc)
r8:bfa115e8 r7:80df9884 r6:80dafa9c r5:00000003 r4:bfa115d0
[<8005fc30>] (__lock_acquire+0x0/0x1cbc) from [<800620d0>] (lock_acquire+0x70/0x84)
[<80062060>] (lock_acquire+0x0/0x84) from [<8061a210>] (mutex_lock_nested+0x54/0x3c0)
r7:bfa11200 r6:80dafa9c r5:00000000 r4:80480b08
[<8061a1bc>] (mutex_lock_nested+0x0/0x3c0) from [<80480b08>] (clk_prepare_lock+0x44/0xe4)
[<80480ac4>] (clk_prepare_lock+0x0/0xe4) from [<8048188c>] (clk_get_rate+0x14/0x64)
r6:03197500 r5:bf0e9aa8 r4:bf827400 r3:808ae128
[<80481878>] (clk_get_rate+0x0/0x64) from [<8046374c>] (esdhc_pltfm_set_clock+0x20/0x2a4)
r5:bf0e9aa8 r4:bf0e9c40
[<8046372c>] (esdhc_pltfm_set_clock+0x0/0x2a4) from [<8045d70c>] (sdhci_set_clock+0x4c/0x498)
[<8045d6c0>] (sdhci_set_clock+0x0/0x498) from [<80461518>] (sdhci_do_set_ios+0x344/0x720)
r8:0000003b r7:20000113 r6:bf0e9d68 r5:bf0e9aa8 r4:bf0e9c40
r3:00000000
[<804611d4>] (sdhci_do_set_ios+0x0/0x720) from [<80461924>] (sdhci_set_ios+0x30/0x3c)
r9:00000004 r8:bf131000 r7:bf131048 r6:00000000 r5:bf0e9aa8
r4:bf0e9800
[<804618f4>] (sdhci_set_ios+0x0/0x3c) from [<8044c390>] (__mmc_set_clock+0x44/0x60)
r5:03197500 r4:bf0e9800
[<8044c34c>] (__mmc_set_clock+0x0/0x60) from [<8044cd4c>] (mmc_set_clock+0x10/0x14)
r5:00000000 r4:bf0e9800
[<8044cd3c>] (mmc_set_clock+0x0/0x14) from [<8044f8f4>] (mmc_init_card+0x1b4/0x1520)
[<8044f740>] (mmc_init_card+0x0/0x1520) from [<80450f00>] (mmc_attach_mmc+0xb4/0x194)
[<80450e4c>] (mmc_attach_mmc+0x0/0x194) from [<8044da08>] (mmc_rescan+0x294/0x2f0)
r5:8065f358 r4:bf0e9af8
[<8044d774>] (mmc_rescan+0x0/0x2f0) from [<8003db94>] (process_one_work+0x1a4/0x468)
r8:00000000 r7:bfa29eb0 r6:bf80dc00 r5:bf0e9af8 r4:bf9e3f00
r3:8044d774
[<8003d9f0>] (process_one_work+0x0/0x468) from [<8003e850>] (worker_thread+0x118/0x3e0)
[<8003e738>] (worker_thread+0x0/0x3e0) from [<80044de0>] (kthread+0xd4/0xf0)
[<80044d0c>] (kthread+0x0/0xf0) from [<8000e9c8>] (ret_from_fork+0x14/0x2c)
r7:00000000 r6:00000000 r5:80044d0c r4:bf9e7f00
Fixes: 0ddf03c mmc: esdhc-imx: parse max-frequency from devicetree
Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Philippe De Muyter <phdm@macqel.be>
Cc: stable <stable@vger.kernel.org> # 3.13
Signed-off-by: Chris Ball <chris@printf.net>
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This reverts and updates commit 77776fd0a4cc541b9 ("mmc: sd: fix the
maximum au_size for SD3.0"). The au_size for SD3.0 cannot be achieved
by a simple bit shift, so this needs to be implemented differently.
Also, don't print the warning in case of 0 since 'not defined' is
different from 'invalid'.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: stable <stable@vger.kernel.org> # [3.12, 3.13]
Signed-off-by: Chris Ball <chris@printf.net>
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Other MMC hosts handle a regulator named vmmc-supply that allows to power
the MMC card or SDIO device before communicating on the bus.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Chris Ball <chris@printf.net>
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Due to unknown hw issue so far, Merrifield is unable to enable HS200
support. This patch adds quirk to avoid SDHCI to initialize with error
below:
[ 53.850132] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W
3.12.0-rc6-00037-g3d7c8d9-dirty #36
[ 53.850150] Hardware name: Intel Corporation Merrifield/SALT BAY,
BIOS 397 2013.09.12:11.51.40
[ 53.850167] 00000000 00000000 ee409e48 c18816d2 00000000 ee409e78
c123e254 c1acc9b0
[ 53.850227] 00000000 00000000 c1b14148 000003de c16c03bf c16c03bf
ee75b480 ed97c54c
[ 53.850282] ee75b480 ee409e88 c123e292 00000009 00000000 ee409ef8
c16c03bf c1207fac
[ 53.850339] Call Trace:
[ 53.850376] [<c18816d2>] dump_stack+0x4b/0x79
[ 53.850408] [<c123e254>] warn_slowpath_common+0x84/0xa0
[ 53.850436] [<c16c03bf>] ? sdhci_send_command+0xb4f/0xc50
[ 53.850462] [<c16c03bf>] ? sdhci_send_command+0xb4f/0xc50
[ 53.850490] [<c123e292>] warn_slowpath_null+0x22/0x30
[ 53.850516] [<c16c03bf>] sdhci_send_command+0xb4f/0xc50
[ 53.850545] [<c1207fac>] ? native_sched_clock+0x2c/0xb0
[ 53.850575] [<c14c1f93>] ? delay_tsc+0x73/0xb0
[ 53.850601] [<c14c1ebe>] ? __const_udelay+0x1e/0x20
[ 53.850626] [<c16bdeb3>] ? sdhci_reset+0x93/0x190
[ 53.850654] [<c16c05b0>] sdhci_finish_data+0xf0/0x2e0
[ 53.850683] [<c16c130f>] sdhci_irq+0x31f/0x930
[ 53.850713] [<c12cb080>] ? __buffer_unlock_commit+0x10/0x20
[ 53.850740] [<c12cbcd7>] ? trace_buffer_unlock_commit+0x37/0x50
[ 53.850773] [<c1288f3c>] handle_irq_event_percpu+0x5c/0x220
[ 53.850800] [<c128bc96>] ? handle_fasteoi_irq+0x16/0xd0
[ 53.850827] [<c128913a>] handle_irq_event+0x3a/0x60
[ 53.850852] [<c128bc80>] ? unmask_irq+0x30/0x30
[ 53.850878] [<c128bcce>] handle_fasteoi_irq+0x4e/0xd0
[ 53.850895] <IRQ> [<c1890b52>] ? do_IRQ+0x42/0xb0
[ 53.850943] [<c1890a31>] ? common_interrupt+0x31/0x38
[ 53.850973] [<c12b00d8>] ? cgroup_mkdir+0x4e8/0x580
[ 53.851001] [<c1208d32>] ? default_idle+0x22/0xf0
[ 53.851029] [<c1209576>] ? arch_cpu_idle+0x26/0x30
[ 53.851054] [<c1288505>] ? cpu_startup_entry+0x65/0x240
[ 53.851082] [<c18793d5>] ? rest_init+0xb5/0xc0
[ 53.851108] [<c1879320>] ? __read_lock_failed+0x18/0x18
[ 53.851138] [<c1bf6a15>] ? start_kernel+0x31b/0x321
[ 53.851164] [<c1bf652f>] ? repair_env_string+0x51/0x51
[ 53.851190] [<c1bf6363>] ? i386_start_kernel+0x139/0x13c
[ 53.851209] ---[ end trace 92777f5fe48d33f2 ]---
[ 53.853449] mmcblk0: error -84 transferring data, sector 11142162, nr
304, cmd response 0x0, card status 0x0
[ 53.853476] mmcblk0: retrying using single block read
[ 55.937863] sdhci: Timeout waiting for Buffer Read Ready interrupt
during tuning procedure, falling back to fixed sampling clock
[ 56.207951] sdhci: Timeout waiting for Buffer Read Ready interrupt
during tuning procedure, falling back to fixed sampling clock
[ 66.228785] mmc0: Timeout waiting for hardware interrupt.
[ 66.230855] ------------[ cut here ]------------
Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
Reviewed-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Acked-by: Dong Aisheng <b29396@freescale.com>
Cc: stable <stable@vger.kernel.org> # [3.13]
Signed-off-by: Chris Ball <chris@printf.net>
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This patch defines a quirk for platforms unable to enable HS200 support.
Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
Reviewed-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Acked-by: Dong Aisheng <b29396@freescale.com>
Cc: stable <stable@vger.kernel.org> # [3.13]
Signed-off-by: Chris Ball <chris@printf.net>
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Add a driver for Arasan's SDHCI controller core.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Acked-by: Rob Herring <rob.herring@calxeda.com> [binding]
Acked-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: Chris Ball <chris@printf.net>
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Add dw_mmc-k3.c for k3v2, support sd/emmc
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Zhigang Wang <brooke.wangzhigang@huawei.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Chris Ball <chris@printf.net>
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Suggested by Jaehoon: Use slot-gpio to handle cd-gpio
Add function dw_mci_of_get_cd_gpio to check "cd-gpios" from dts.
mmc_gpio_request_cd and mmc_gpio_get_cd are used to handle cd pin
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Chris Ball <chris@printf.net>
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Add O2Micro/BayHubTech SD Host DeviceId 8520 support.
Add O2Micro/BayHubTech SD Host DeviceId 8420 & 8421 support.
Add O2Micro/BayHubTech SD Host DeviceId 8620 & 8621 support.
These card readers are used in laptops like Lenovo ThinkPad W540,
Dell Latitude E5440, Dell Latitude E6540.
Signed-off-by: Peter Guo <peter.guo@bayhubtech.com>
Signed-off-by: Adam Lee <adam.lee@canonical.com>
Signed-off-by: Chris Ball <chris@printf.net>
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Break out definitions in sdhci-pci.c to sdhci-pci.h, for introducing
module files like sdhci-pci-xxx.c
Signed-off-by: Adam Lee <adam.lee@canonical.com>
Signed-off-by: Chris Ball <chris@printf.net>
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This patch fixes the below compile error:
${LINUX}/drivers/mmc/host/tmio_mmc.c: In function 'tmio_mmc_probe':
${LINUX}/drivers/mmc/host/tmio_mmc.c:93:35: \
error: 'res_ctl' undeclared (first use in this function)
${LINUX}/drivers/mmc/host/tmio_mmc.c:93:35: \
note: each undeclared identifier is reported only \
once for each function it appears in
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Chris Ball <chris@printf.net>
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This helps increasing build testing coverage.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Chris Ball <cjb@laptop.org>
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This helps increasing build testing coverage.
The driver doesn't compile on (at least) x86 due (possibly among others)
to missing readsw/writesw I/O accessors, restrict compilation to SUPERH
or ARM.
Whether the CTL_DMA_ENABLE register is part of the standard TMIO
controller or is Renesas-specific is unknown and impossible to test as
we have no current or planned TMIO DMA users other than SUPERH and
ARCH_SHMOBILE. Writing to the register is thus conditionally compiled
for SUPERH and ARCH_SHMOBILE only. Adding ARCH_SHMOBILE_MULTI to the
list would extend this to multiarch kernels, but would break the driver
for non-shmobile platforms if the register is Renesas-specific. We can
thus get rid of the conditional compilation completely without
introducing any further issue, and let future non-Renesas users deal
with the situation if it turns out to be a the problem.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Chris Ball <cjb@laptop.org>
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Tegra124's MMC controller is very similar to earlier SoC generations,
and can be supported by the same driver.
However, there are some non-backwards-compatible HW differences, and
hence a new DT compatible value must be used to describe the HW. This
patch updates the driver to support that new compatible value.
That said, the HW differences are only relevant when enabling certain
high-performance transfer modes. Since the driver is currently very
simple and doesn't enable those modes, we don't actually need to address
any of these HW differences in the code yet, hence the simple nature of
this patch.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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Casting an integer to a void * generates a "cast to pointer from integer
of different size" warning. Cast the integer to an unsigned long first
to fix it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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The channel request and configuration code is duplicated for the rx and
tx channels. Create a function that requests a single channel and call
it twice instead.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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One of Renesas SDHI chip needs workaround to use it, and, we can judge
it based on chip version. This patch adds very quick-hack workaround
method, since we still don't know how many chips need workaround in
the future.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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The accessibility checking method to the higher register was added by
69d1fe18e92afb (mmc: tmio: only access registers above 0xff, if available)
But, it doesn't care 32bit register. It is impossible to calculate it
from the resource size, since there is 16/32 bit register IP (e.g. VERSION
is located on 0xe2 if 16bit register, but it is located on 0x1c4 if 32bit
register).
This patch adds new TMIO_MMC_HAVE_HIGH_REG flags, tmio_mmc driver has it,
and sh_mobile_sdhi doesn't have it today.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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.bus_shift is used to 16/32bit register access offset calculation on
tmio driver. tmio_mmc_xxx is used from Toshiba/Renesas now, but this
bus_shift value depends on HW IP. This patch moves .bus_shift to
tmio_mmc_data member and sets it on each driver.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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Current tmio driver tries to use default ocr_avail if 1) it couldn't
find regulator and 2) if platform data doesn't have ocr_mask.
But, there is no guarantee that regulator driver probe is faster than
TMIO driver probe. TMIO driver will not use regulator in such case.
By this patch, TMIO driver returns -EPROBE_DEFER if it couldn't find
regulator and if platform doesn't have ocr_mask. Because, there is a
possibility that regulator has not been probed, but the user expects it.
This patch changes tmio_mmc_host_probe() behavior, but there is no user
who has conflict.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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Use generic helper function. This also adds support for the cd-gpios and
max-frequency devicetree properties.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
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This also fixes that the read-only gpio was used without being
requested.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
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