- 26 Oct, 2011 40 commits
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Girish K S authored
This patch adds support for the power off notify feature, available in eMMC 4.5 devices. If the host has support for this feature, then the mmc core will notify the device by setting the POWER_OFF_NOTIFICATION byte in the extended csd register with a value of 1 (POWER_ON). For suspend mode short timeout is used, whereas for the normal poweroff long timeout is used. Signed-off-by:
Girish K S <girish.shivananjappa@linaro.org> Signed-off-by:
Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by:
Chris Ball <cjb@laptop.org>
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Jaehoon Chung authored
sc->clk_bus[ptr] could be NULL. Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by:
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Girish K S authored
All the files using printk function for displaying kernel messages in the mmc driver have been replaced with corresponding macro. Signed-off-by:
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Seungwon Jeon authored
EXT_CSD[248] includes the default maximum timeout for CMD6. This field is added at eMMC4.5 Spec. And it can be used for default timeout except for some operations which don't define the timeout (i.e. background operation, sanitize, flush cache) in eMMC4.5 Spec. Signed-off-by:
Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by:
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Adrian Hunter authored
Ths patch allows runtime PM for sdhci-pci, runtime suspending after inactivity of 50ms and ensuring runtime resume before SDHC registers are accessed. During runtime suspend, interrupts are masked. The host controller state is restored at runtime resume. For Medfield, the host controller's card detect mechanism is supplanted by an always-on GPIO which provides for card detect wake-up. Signed-off-by:
Adrian Hunter <adrian.hunter@intel.com> Signed-off-by:
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Adrian Hunter authored
mmc_request_done() is sometimes called from interrupt or other atomic context. Mostly all mmc_request_done() does is complete(), however it contains code to retry on error, which uses ->request(). As the error path is certainly not performance critical, this may be moved to the waiting function mmc_wait_for_req_done(). This allows ->request() to use runtime PM get_sync() and guarantee it is never in an atomic context. Signed-off-by:
Ulf Hansson <ulf.hansson@stericsson.com> Signed-off-by:
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Paul Gortmaker authored
We are cleaning up the implicit presence of module.h; these guys are some of the people who just assume it will be there. Call it out explitly for those that really need it. Signed-off-by:
Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by:
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Stephen Rothwell authored
Commit "mmc: add module param to set fault injection attributes" adds a module_param to this file. But it is relying on the old implicit "module.h is everywhere" behaviour, and without the explicit include of moduleparam.h, the pending module.h split up produces this error: core/debugfs.c:28:35: error: expected ')' before numeric constant Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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Namjae Jeon authored
It allows gerneral purpose partitions in MMC Device. And I try to simply make mmc_blk_alloc_parts using mmc_part structure suggested by Andrei Warkentin. After patching, we see general purpose partitions like this: > cat /proc/partitions 179 0 847872 mmcblk0 179 192 4096 mmcblk0gp3 179 160 4096 mmcblk0gp2 179 128 4096 mmcblk0gp1 179 96 1052672 mmcblk0gp0 179 64 1024 mmcblk0boot1 179 32 1024 mmcblk0boot0 Signed-off-by:Namjae Jeon <linkinjeon@gmail.com> Acked-by:
Andrei Warkentin <awarkentin@vmware.com> Signed-off-by:
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Andrei Warkentin authored
f39b2dd9 ("mmc: core: Bus width testing needs to handle suspend/resume") added code to only compare read-only ext_csd fields in bus width testing code, yet it's comparing some fields that are never set. The affected fields are ext_csd.raw_erased_mem_count and ext_csd.raw_partition_support. Signed-off-by:
Andrei Warkentin <andrey.warkentin@gmail.com> Acked-by:
Philip Rakity <prakity@marvell.com> Cc: <stable@kernel.org> Signed-off-by:
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Yong Zhang authored
Since commit [e58aa3d2: genirq: Run irq handlers with interrupts disabled], we run all interrupt handlers with interrupts disabled and we even check and yell when an interrupt handler returns with interrupts enabled (see commit [b738a50a: genirq: Warn when handler enables interrupts]). So now this flag is a NOOP and can be removed. Signed-off-by:
Yong Zhang <yong.zhang0@gmail.com> Acked-by:
Kishore Kadiyala <kishore.kadiyala@ti.com> Acked-by:
Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by:
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Adrian Hunter authored
Intel Medfield platform blocks access to eMMC boot partitions which results in switch errors. Since there is no access, mmcboot0/1 devices should not be created. Add a host capability to reflect that. Signed-off-by:
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Adrian Hunter authored
In the case of a switch error, do not update partition config as though the switch succeeded, and ensure blk_end_request is called on the failed request. Signed-off-by:
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Girish K S authored
This patch adds the power class selection feature available for mmc versions 4.0 and above. During the enumeration stage before switching to the lower data bus, check if the power class is supported for the current bus width. If the power class is available then switch to the power class and use the higher data bus. If power class is not supported then switch to the lower data bus in a worst case. Signed-off-by:
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Per Forlin authored
Signed-off-by:
Per Forlin <per.forlin@linaro.org> Reviewed-by:
Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by:
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Per Forlin authored
Replace setup("fail_mmc_request") and faulty "ifdef KERNEL" with a simple module_param(). The module param mmc_core.fail_request may be used to set the fault injection attributes during boot time or module load time. Signed-off-by: -
Per Forlin authored
mmc_core module needs to use setup_fault_attr() in order to set fault injection attributes during module load time. Signed-off-by:
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Shawn Guo authored
This patch adds the basic support for imx6q usdhc, which is a derivative of esdhc controller. Signed-off-by:
Shawn Guo <shawn.guo@linaro.org> Signed-off-by:
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Aaron Lu authored
This is a minor fix. It makes mmc_ios_show print proper string when the host's timing is one of the newly added UHS-I modes. Signed-off-by:
Aaron Lu <aaron.lu@amd.com> Signed-off-by:
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Guennadi Liakhovetski authored
Provide platforms with a simplified way to specify MMCIF DMA slave IDs in a way, similar to SDHI and other sh_dma clients. Signed-off-by:
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Adrian Hunter authored
For cards that support hardware reset (just eMMC), try a reset and retry before returning an I/O error. However this is not done for ECC errors and is never done twice for the same operation type (READ, WRITE, DISCARD, SECURE DISCARD) until that type of operation again succeeds. Signed-off-by:
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Adrian Hunter authored
MMC core provides a checking function that checks if the reset has happended. Add a test to use that function. Signed-off-by:
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Adrian Hunter authored
Implement eMMC hardware reset for Medfield. Signed-off-by:
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Adrian Hunter authored
Add an SDHCI operation for hardware reset and connect it to the host controller operation. Signed-off-by:
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Adrian Hunter authored
eMMC's may have a hardware reset line. This patch provides a host controller operation to implement hardware reset and a function to reset and reinitialize the card. Also, for MMC, the reset is always performed before initialization. The host must set the new host capability MMC_CAP_HW_RESET to enable hardware reset. Signed-off-by:
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Per Forlin authored
The error condition indicates that mmci_post_request() should cleanup after the mmci_pre_request(). In this case the resources allocated by device_prep_slave_sg() are freed by calling dmaengine_terminate_all(). dma_unmap_sg() should always be performed if the host_cookie is set. Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
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Per Forlin authored
The err condition in post_req() is set to undo a call made to pre_req() that hasn't been started yet. The err condition is not set if an MMC request returns an error. Signed-off-by:
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Stefan Nilsson XK authored
Earlier all cards where initiated with bus mode set as OPENDRAIN, and then later switched to PUSHPULL. According to the MMC/SD/SDIO specifications only MMC cards use OPENDRAIN during init. For both SD and SDIO the bus mode shall be PUSHPULL before attempting to init the card. The consequence of having incorrect bus mode can lead to not being able to detect the card. Therefore the default behavior have now been changed to PUSHPULL in mmc_power_up, and will only be temporarily switched when trying to attach or init a MMC card. Signed-off-by:
Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com> Signed-off-by:
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Stefan Nilsson XK authored
Adds a quirk which can be turned on for SDIO devices that do not support 512 byte requests in byte mode during CMD53. These requests will always be sent in block mode instead. This patch also enables this quirk for ST-Ericsson CW1200 WLAN device. Signed-off-by:
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Tanmay Upadhyay authored
Signed-off-by:
Tanmay Upadhyay <tanmay.upadhyay@einfochips.com> Acked-by:
Zhangfei Gao <zhangfei.gao@marvell.com> Signed-off-by:
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Ulf Hansson authored
During a rescan operation mmc_attach(sd|mmc|sdio) functions are called. The error handling in these function can trigger a detach of the bus, which also meant a power off. This is not notified by the rescan operation which then continues to the next attach function. If a power off has been done, the framework must never send any new commands to the host driver, without first doing a new power up. This will most likely trigger any host driver to hang. Moving power off out of detach and instead handle power off separately when it is actually needed, solves the issue. Signed-off-by:
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Viresh Kumar authored
Currently if card_power_gpio is passed from platform data, it is acquired and its value is either set or reset. After that we overwrite it with 1, which is not required. So, this patch removes the extra line which sets its value. Signed-off-by:
Viresh Kumar <viresh.kumar@st.com> Signed-off-by:
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Xu lei authored
Freescale eSDHC registers only support 32-bit accesses, this patch ensures that all Freescale eSDHC register accesses are 32-bit. Signed-off-by:
Xu lei <B33228@freescale.com> Signed-off-by:
Roy Zang <tie-fei.zang@freescale.com> Signed-off-by:
Kumar Gala <galak@kernel.crashing.org> Acked-by:
Anton Vorontsov <cbouatmailru@gmail.com> Signed-off-by:
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Balaji T K authored
Put MMC to sleep if it supports SLEEP/AWAKE (CMD5) in the mmc suspend so that Vcc (NAND core) can be cut to minimize power consumption. eMMC put into SLEEP can respond to CMD0 or H/W reset or CMD5. Current implemention on resume from suspend relies on CMD0 in mmc_init_card to get out of SLEEP mode. Signed-off-by:
Balaji T K <balajitk@ti.com> Acked-by:
Venkatraman S <svenkatr@ti.com> Reviewed-by:
Subhash Jadavani <subhashj@codeaurora.org> Acked-by:
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Thomas Abraham authored
The default controller configuration which was previously setup by platform helper functions is moved into the driver. Cc: Ben Dooks <ben-linux@fluff.org> Signed-off-by:
Thomas Abraham <thomas.abraham@linaro.org> Acked-by:
Kukjin Kim <kgene.kim@samsung.com> Signed-off-by:
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Daniel Drake authored
Stress-testing the runtime power management of libertas_sdio through a rmmod/insmod loop revealed that it is quite easy to cause an ETIMEDOUT failure in mmc_sdio_power_restore() leading to: libertas_sdio: probe of mmc1:0001:1 failed with error -16 Experimentation shows that a very short delay (100us) is needed in the power down path before the card can be successfully booted again. We know that this setup is lacking poweroff clamps on the card's power lines, but as only a short delay is needed, apply this unconditionally. Also bump up to 1ms sleep for extra legroom. Signed-off-by:
Daniel Drake <dsd@laptop.org> Signed-off-by:
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Stephen Warren authored
The previous patch which implemented a DT binding for sdhci-tegra did not allow all platform data fields to be initialized from DT. The following were missing: is_8bit: Implemented by this patch. pm_flags: Not implemented yet. There are no mainline users of this field. I'm not quite sure what it's for, and hence how to represent this in DT; the value ends up being assigned to host->mmc->pm_caps. While we're at it, fix the binding documentation to refer to "SD/MMC" instead of "eSDHC", since that's the correct name; "eSDHC" was cut/paste from the Freescale binding docs. Signed-off-by:
Stephen Warren <swarren@nvidia.com> Signed-off-by:
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Shashidhar Hiremath authored
The Patch adds the support for SDIO interrupts for all slots. It includes enabling of SDIO interrupts through dw_mci_enable_sdio_irq and the handling of the slot specific interrupts in the Interrupt Service Routine. Signed-off-by:
Shashidhar Hiremath <shashidharh@vayavyalabs.com> Acked-by:
James Hogan <james.hogan@imgtec.com> Signed-off-by:
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Subhash Jadavani authored
If DMA resource is not available then SDCC driver should atleast work in PIO data transfer mode. Signed-off-by:
Sahitya Tummala <stummala@codeaurora.org> Signed-off-by:
David Brown <davidb@codeaurora.org> Signed-off-by:
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Sahitya Tummala authored
Intialize busclk_timer before it is accessed in probe. Signed-off-by:
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