- 22 Jul, 2012 6 commits
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Aaron Lu authored
For SD hosts using retuning mode 1, when retuning timer expired, it will need to do retuning in sdhci_request before processing the actual request. But the retuning command is fixed: cmd19 for SD card and cmd21 for eMMC card, so we can't use the original request's command to do the tuning. And since the tuning command depends on the card type attached to the host, we will need to know the card type to use the correct tuning command. Signed-off-by:
Aaron Lu <aaron.lu@amd.com> Reviewed-by:
Philip Rakity <prakity@marvell.com> Cc: stable <stable@vger.kernel.org> [3.3+] Signed-off-by:
Chris Ball <cjb@laptop.org>
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Daniel Drake authored
At http://dev.laptop.org/ticket/11980 we have determined that the Marvell CaFe SDHCI controller reports bad card presence during resume. It reports that no card is present even when it is. This is a regression -- resume worked back around 2.6.37. Around 400ms after resuming, a "card inserted" interrupt is generated, at which point it starts reporting presence. Work around this hardware oddity by setting the SDHCI_QUIRK_BROKEN_CARD_DETECTION flag. Thanks to Chris Ball for helping with diagnosis. Signed-off-by:
Daniel Drake <dsd@laptop.org> [stable@: please apply to 3.0+] Cc: <stable@vger.kernel.org> Signed-off-by:
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Mark Brown authored
For most error conditions sdhci_add_host() will print a diagnostic message indicating why it failed but there are a few cases where this does not happen. Add error messages in these cases to aid diagnosis. Signed-off-by:
Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by:
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Sylwester Nawrocki authored
The s3c2410_gpio* calls are obsolete and have been scheduled for removal since several kernel releases. Remove them and use common gpiolib API. This patch is a prerequisite for removal of the S3C24XX SoC specific arch/arm/plat-samsung/include/gpio-fns.h header. Tested on Micro2440-SDK. Signed-off-by:
Sylwester Nawrocki <sylvester.nawrocki@gmail.com> Signed-off-by:
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Philip Rakity authored
Currently only the capability_0 register can be set if SDHCI_QUIRK_MISSING_CAPS is defined. This is a problem when the capability_1 register also needs changing. Use the quirk SDHCI_QUIRK_MISSING_CAPS to allow both registers to be set. Redefining caps[1] is useful when the board design does not support 1.8v vccq so UHS modes are not available. The code that calls sdhci_add_host can then detect this condition and adjust the caps so the UHS mode will not be attempted on UHS cards. Signed-off-by:
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Shawn Guo authored
If bootloader or platform initialization code does not enable the power supply to mmc slot, we need to do it in mmc driver. Signed-off-by:
Shawn Guo <shawn.guo@linaro.org> Signed-off-by:
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- 21 Jul, 2012 33 commits
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Alan Cox authored
The effect of the existing code is that we continue blindly when we should warn about an invalid allocation unit. Reported-by: dcb314@hotmail.com Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=44061Signed-off-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
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Philip Rakity authored
If we are using a regulator the SD Host Controller and the regulator should agree about the voltages supported. Use the common subset that is supported. Signed-off-by:
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Philip Rakity authored
max_current_caps can return 0 if not available from the sd controller. If no regulator is present or the regulator specifies a current less then 200ma, we no longer still set the 200mA caps bit anyway. Signed-off-by:
Aaron Lu <aaron_lu@amd.com> Signed-off-by:
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Philip Rakity authored
The sd host controller spec indicates the the MAX_CURRENT value may be returned as 0. In this case other methods need to be used to return the current. If 0 is returned and there is a regulator, ask the regulator for how much current is available. Signed-off-by:
Mark F. Brown <mark.brown314@gmail.com> Reviewed-by:
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Guennadi Liakhovetski authored
Extend the sh_mmcif driver to support GPIO card detection, provided by the slot function module. The original .get_cd() platform callback is also preserved for now. Signed-off-by:
Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by:
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Guennadi Liakhovetski authored
Currently mmc host drivers have to decide whether to enable card detection before calling mmc_add_host() -- in which case a card insertion event can arrive before the host has been completely initialised -- or after mmc_add_host(), in which case the initial card detection can be problematic. This patch adds an explicit indication of when card detection should not be carried out. With it in place enabling card detection before calling mmc_add_host() should be safe. Similarly, disabling it again after calling mmc_remove_host() will avoid any races. Signed-off-by:
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Guennadi Liakhovetski authored
Add primitive OF support to the sh-mmcif driver, which also makes it necessary to be able to run without platform data. Signed-off-by:
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Guennadi Liakhovetski authored
Add primitive support for OF to the SDHI TMIO glue, which also makes it necessary to be able to run without platform data. Signed-off-by:
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Guennadi Liakhovetski authored
The tmio-mmc driver is already using the generic GPIO CD handler in IRQ mode. This patch adds support for CD polling mode and also checks for availability of a WP GPIO. Signed-off-by:
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Guennadi Liakhovetski authored
Let SDHI platforms specify mmc_host::caps2 flags in their platform data. Signed-off-by:
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Guennadi Liakhovetski authored
Allow tmio mmc glue drivers to pass mmc_host::caps2 flags down to the mmc layer. Signed-off-by:
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Guennadi Liakhovetski authored
Card Write-Protect pin is often implemented, using a GPIO, which makes it simple to provide a generic handler for it. Signed-off-by:
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Guennadi Liakhovetski authored
This prepares for the addition of further slot functions. Signed-off-by:
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Guennadi Liakhovetski authored
A simple extension of mmc slot functions add support for CD GPIO polling for cases where the GPIO cannot produce interrupts, or where this is not desired for some reason. Signed-off-by:
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Guennadi Liakhovetski authored
To handle CD and WP SD/MMC slot pins we need generic flags to specify their polarity. Signed-off-by:
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Guennadi Liakhovetski authored
struct mmc_host::hotplug is becoming a generic hook for slot functions. Rename it accordingly. Signed-off-by:
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Guennadi Liakhovetski authored
Add regulator support to the sh_mmcif driver, but also preserve the current power-callback. Also note, that the card power is not switched off during clock gating periods, hence there's no need to power it on every time the card is re-activated. Signed-off-by:
Simon Horman <horms@verge.net.au> Signed-off-by:
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Guennadi Liakhovetski authored
From the original version of sh_mmcif the .set_pwr() callback has only been used to turn the card's power on, and the .down_pwr() callback has been used to turn it off. .set_pwr() can be used for both these tasks, which is also how it is implemented by the only user of this API: the SH7724 ecovec board. Signed-off-by:
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Guennadi Liakhovetski authored
With aggressive clock gating the clock can be disabled during interface inactivity. During this time its frequency can be changed by another its user. Therefore when the interface is activated again and the clock is re-enabled, its frequency has to be re-read. Signed-off-by:
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Guennadi Liakhovetski authored
Regardless of whether the MMC bus clock is the same as the PM clock on this specific interface, it has to be managed separately. Its proper management should also include enabling and disabling of the clock, whenever the interface is becoming active or going idle respectively. Signed-off-by:
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Guennadi Liakhovetski authored
A check for NULL platform data can be conveniently made in the very beginning of probing. Replace numbered error-handling labels in .probe() with meaningful names to make any future reorganisation simpler. Signed-off-by:
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Guennadi Liakhovetski authored
Signed-off-by:
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Guennadi Liakhovetski authored
Currently the SDHI glue for the TMIO MMC driver installs dummy .get_cd() and .set_pwr() callbacks even if the platform didn't supply them. This is not necessary, since the TMIO MMC driver itself checks for NULL callbacks. This is also dubious if the platform provides a regulator for SD-card power switching. It is better to only install those callbacks, if they are really provided by the platform. Signed-off-by:
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Guennadi Liakhovetski authored
Currently the TMIO MMC driver derives the OCR mask from the platform data and uses a platform callback to turn card power on and off. This patch adds regulator support to the driver. Signed-off-by:
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Guennadi Liakhovetski authored
Instead of delivering one static clock frequency value, read from the hardware during probing, enable the tmio-mmc driver to re-read the frequency dynamically. Signed-off-by:
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Guennadi Liakhovetski authored
Every time the clock is enabled after possibly being disabled, we have to re-read its frequency and update our configuration. Signed-off-by:
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Guennadi Liakhovetski authored
We don't have to force-enable MMC interrupts in our .probe() method, mmc_add_host() will trigger card detection, that will enable all the necessary interrupts. Signed-off-by:
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Jonathan Kliegman authored
host->dma_ops is not valid if host->usa dma is 0 so protect host->dma_ops reference in dw_mci_resume Signed-off-by:
Jonathan Kliegman <kliegs@chromium.org> Acked-by:
Jaehoon Chung <jh80.chung@samsung.com> Acked-by:
Will Newton <will.newton@imgtec.com> Signed-off-by:
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Guennadi Liakhovetski authored
Add a function to get regulators, supplying card's Vdd and Vccq on a specific host. If a Vdd supplying regulator is found, the function checks, whether a valid OCR mask can be obtained from it. The Vccq regulator is optional. A failure to get it is not fatal. Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by:
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Laurent Pinchart authored
The tmio_mmc_set_ios() function configures the MMC power, clock and bus width. When the mmc core requests the driver to power off the card, we inform runtime PM, that the controller can be suspended. This can lead to the MSTP clock being turned off. Writing to any 16-bit hardware registers with the MSTP clock off leads to timeouts and errors being printed to the kernel log. This can occur both when stopping the MMC clock and when configuring the bus width. To fix this, stop the MMC clock before calling put_runtime_pm(), and skip bus width configuration when power is off. Signed-off-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Tested-by:
Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Tested-by:
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Laurent Pinchart authored
The MMC_SLEEP_AWAKE and SD_IO_SEND_OP_COND commands share the same opcode. SD_IO_SEND_OP_COND isn't supported by the SH MMCIF, but MMC_SLEEP_AWAKE is. Discriminate between the two commands using the command flags, and reject SD_IO_SEND_OP_COND only. Signed-off-by:
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Girish K S authored
In the current dwmmc driver there is support for selecting IDMAC from the menu config option. If the support for IDMAC is enabled in the menu config and the hardware configuration register's DMA_INTERFACE field is 0, the driver will still try to do the DMA initialization. The dw_mci_idmac_init function currently implemented returns only success indicating that the DMA initialization is always successful. This patch adds a check for existence of the DMA IP to allow the DMA initialization. Signed-off-by:
Girish K S <girish.shivananjappa@linaro.org> Acked-by:
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Chris Ball authored
Tested on an OLPC XO-1.75. (MMP2, sdhci-pxav3, CONFIG_MACH_MMP2_DT=y) Signed-off-by:
Haojian Zhuang <haojian.zhuang@gmail.com>
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- 11 Jul, 2012 1 commit
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Chris Ball authored
Even though these aren't parsed by the MMC driver, make clear that they're required by the OF core. (Also, a few typo fixes.) Signed-off-by:
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