- 26 Oct, 2011 40 commits
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Adrian Hunter authored
Implement eMMC hardware reset for Medfield. Signed-off-by:
Adrian Hunter <adrian.hunter@intel.com> Signed-off-by:
Chris Ball <cjb@laptop.org>
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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:
Per Forlin <per.forlin@linaro.org> Acked-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:
Ulf HANSSON <ulf.hansson@stericsson.com> Acked-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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Sahitya Tummala authored
Not all targets have IRQ1 line routed from the SD controller to the processor. So we cannot rely on IRQ1 for PIO interrupts. This patch moves all PIO interrupts to IRQ0 and enables the PIO mode. Signed-off-by:
Murali Palnati <palnatim@codeaurora.org> Signed-off-by:
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Sahitya Tummala authored
On some targets, MCI_IRQ_MASK1 is not routed to the MSM in which case only "cmd_irq" must be used even for PIO. With this change, all the targets will use only "cmd_irq" for both CMD and PIO. Signed-off-by:
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Sahitya Tummala authored
For clocks that support rates which can be set (most clocks other than _pclk AHB clocks), a rate must be set using clk_set_rate() before the clock is enabled for the first time with clk_enable(). Subsequent calls to clk_enable() need not be preceded with the clk_set_rate() calls unless we wish to change the clock rate that is set previously. SDC host->clk is currently enabled without setting the clock rate even once. This patch fixes this, by ensuring that the clock rate for this clock is first set before enabling the clock. Signed-off-by:
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Sahitya Tummala authored
Signed-off-by:
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Alexander Tarasikov authored
This allows boards with non-standard sdio cards to fill the CIS/CCCR data. It is particularly important for old msm72k boards using wl1251. Also drop the obsolete embedded_sdio_data structure from the header as it was intended to surve a similiar purpose but was not implemented. Signed-off-by:
Alexander Tarasikov <alexander.tarasikov@gmail.com> Acked-by:
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Alexander Tarasikov authored
The use of && instead of || caused a NULL pointer dereference if gpio setup was not passed via platform data Signed-off-by:
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Simon Horman authored
This allows specific (non-multiplexed) IRQ handlers to be used. Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Paul Mundt <lethal@linux-sh.org> Acked-by:
Magnus Damm <magnus.damm@gmail.com> Signed-off-by:
Simon Horman <horms@verge.net.au> Signed-off-by:
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Simon Horman authored
Allow named IRQs to use corresponding specific handlers. If named IRQs are used, at least an "sdcard" IRQ has to be specified by the platform. If names are not used, an arbitrary number of IRQs can be provided by the platform, in which case the generic ISR will be used for each of them. Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by:
Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by:
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Simon Horman authored
Provide separate interrupt handlers which may be used by platforms where SDHI has three interrupt sources. This patch also removes the commented-out handling of CRC and other errors. Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by:
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Simon Horman authored
This avoids the need to look up the masks each time an interrupt is handled. As suggested by Guennadi. Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by:
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Venkatraman S authored
Fix the sparse warning output "warning: Using plain integer as NULL pointer" Signed-off-by:
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Venkatraman S authored
Fix the sparse warning "drivers/mmc/card/queue.c:111:20: warning: symbol 'mmc_alloc_sg' was not declared. Should it be static?" Signed-off-by:
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Sascha Hauer authored
The individual SoC dependency in Kconfig hardly scales anymore. Instead of having such a fine grained dependency just depend on ARCH_MXC and risk that the uninformed user has to look in the help text to figure out which driver is the correct one. Signed-off-by:
Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by:
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Grant Likely authored
Add hooks to read gpio configuration out of the device tree node. [grant.likely: Rewrite of original patch from John Bonesio] Signed-off-by:
Grant Likely <grant.likely@secretlab.ca> [swarren: Fixed tegra_sdhci_get_ro() to retrieve pdata correctly] [swarren: Reworked to avoid #ifdef CONFIG_OF] [swarren: Reworked binding based on fsl-imx-esdhc.txt] [swarren: Documented binding] Signed-off-by:
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Daniel Drake authored
Now that we have improved the runtime power management powerup/powerdown code, we believe that MMC_CAP_POWER_OFF_CARD is no longer necessary: runtime PM should now work everywhere. The only hard evidence for introducing MMC_CAP_POWER_OFF_CARD was the Marvell sd8686 wifi chip, which was believed to require external gpio manipulation which wasn't supported by some boards. After further investigation it was realized (and confirmed by Marvell folks) that sd8686 requirements can be fulfilled by changing the reset sequence itself, even if no external gpio is manipulated. For further information, see the following thread: http://www.mail-archive.com/linux-mmc@vger.kernel.org/msg04289.html Enable this trivially for a release or two. If no problems are reported, we will follow up with a more extensive patch to remove this flag altogether. If problems are reported, we can look at whitelist/blacklist possibilities as before. Signed-off-by:
Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by:
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Per Forlin authored
Add description on how to enable random fault injection for MMC IO. Signed-off-by:
Akinobu Mita <akinobu.mita@gmail.com> Reviewed-by:
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Per Forlin authored
This adds support to inject data errors after a completed host transfer. The mmc core will return error even though the host transfer is successful. This simple fault injection proved to be very useful to test the non-blocking error handling in the mmc_blk_issue_rw_rq(). Random faults can also test how the host driver handles pre_req() and post_req() in case of errors. Signed-off-by:
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Per Forlin authored
Export symbols should_fail() and fault_create_debugfs_attr() in order to let modules utilize the fault injection framework. Signed-off-by:
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Richard Zhu authored
Eanble the ADMA2 mode for freescale esdhc imx driver, tested on MX25 3DS board, MX51 BBG board and MX53 LOCO board. This patch is only used to enable the ADMA2 for MX51/53 platforms. MX25/35 can't support the ADMA2 mode, set BROKEN_ADMA quirk on MX25/35 platforms. The ADMA mode supported or not can be distinguished by bit 20 of the Capability Register (offset 0x40) in the FSL eSDHC module. Signed-off-by:
Richard Zhu <richard.zhu@linaro.org> Tested-and-acked-by:
Eric Miao <eric.miao@linaro.org> Signed-off-by:
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Nicolas Ferre authored
Remove the use of irq_to_gpio() in the card detection interrupt handler. The information is available in the board structure and we can avoid using a function that has little meaning. Signed-off-by:
Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by:
Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by:
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Ludovic Desroches authored
This patch fixes a potential issue about PDC interrupts. For example we have a ENDRX pending interrupt and a RXBUFF pending interrupt. We have received the RXBUFF interrupt but the transfer is not finished (so we didn't have time to give a new buffer to the PDC controller). Then we will compute ENDRX interrupt and we will give a new buffer to the PDC controller, just after we will compute the RXBUFF interrupt and give one or two new buffers to the PDC controller but we are not sure that the first buffer given has been filled. So in this situation we may have "lost" one sg buffer. It's the same for transmission. Signed-off-by:
Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by:
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Ludovic Desroches authored
Assuming that a sg buffer size is a page size is false so use sg_dma_len. A 4096 bytes can be required with two 2048-bytes sg buffer. Signed-off-by:
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