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2016-02-29mmc: tmio: add flag to reduce delay after changing clock statusWolfram Sang2-3/+8
The docs for RCar Gen2 & 3 I have access to, mention delays of 5ms after stop and 1ms after start. Make it possible to apply these values. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: sdhi: error message on ENOMEM is superfluousWolfram Sang1-3/+1
We will get a full dump anyhow. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: sdhi: Add EXT_ACC register busy checkShinobu Uehara1-0/+1
All the docs I have access to say that this register needs the bus busy check. Signed-off-by: Shinobu Uehara <shinobu.uehara.xc@renesas.com> Signed-off-by: Ai Kyuse <ai.kyuse.uw@renesas.com> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: tmio_dma: remove debug messages with little informationWolfram Sang1-11/+0
When compiling the driver with CONFIG_MMC_DEBUG set, I got build warnings. They have been 'fixed' meanwhile. However, because these debug messages look random anyhow (some duplicate information printed etc), let's just drop them and rather re-add something consistent if that should ever be needed. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: block: don't use the OR operation for flag of dataJaehoon Chung1-3/+3
After removed the MMC_DATA_STREAM, only two flags are remained. (MMC_DATA_READ and MMC_DATA_WRITE) The flags of READ and WRITE can't be used together. That's why it doesn't need to use "OR' operation. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: core: remove the MMC_DATA_STREAM flagJaehoon Chung1-1/+0
It's not set to MMC_DATA_STREAM anywhere. It seems that it had been used with CMD11/CMD20. But according to Spec, CMD11/CMD20 are obsolete command. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: sunxi-mmc: remove the MMC_DATA_STREAM flagJaehoon Chung1-5/+0
Remove the MMC_DATA_STREAM flag because it isn't used anymore. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: s3cmci: remove the MMC_DATA_STREAM flagJaehoon Chung1-2/+1
Remove the MMC_DATA_STREAM flag because it isn't used anymore. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: pxamci: remove the MMC_DATA_STREAM flagJaehoon Chung1-6/+0
Remove the MMC_DATA_STREAM flag because it isn't used anymore. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: mxcmmc: remove the MMC_DATA_STREAM flagJaehoon Chung1-3/+0
Remove the MMC_DATA_STREAM flag because it isn't used anymore. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: jz4740_mmc: remove the MMC_DATA_STREAM flagJaehoon Chung1-2/+0
Remove the MMC_DATA_STREAM flag because it isn't used anymore. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: dw_mmc: remove the MMC_DATA_STREAM flagJaehoon Chung1-2/+0
Remove the MMC_DATA_STREAM flag because it isn't used anymore. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: davinci_mmc: remove the MMC_DATA_STREAM flagJaehoon Chung1-12/+3
Remove the MMC_DATA_STREAM flag because it isn't used anymore. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: bfin_sdh: remove the MMC_DATA_STREAM flagJaehoon Chung1-3/+0
Remove the MMC_DATA_STREAM flag because it isn't used anymore. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: atmel-mci: remove the MMC_DATA_STREAM flagJaehoon Chung1-7/+2
Remove the MMC_DATA_STREAM flag because it isn't used anymore. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: sunxi: Enable eMMC HS-DDR (MMC_CAP_1_8V_DDR) supportChen-Yu Tsai1-0/+1
Now that clock delay settings for 8 bit DDR are correct, and vqmmc support is available, we can enable MMC_CAP_1_8V_DDR support. This enables MMC HS-DDR at up to 52 MHz, even if signal voltage switching is not available. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: sunxi: Support 8 bit eMMC DDR transfer modesChen-Yu Tsai1-7/+26
Allwinner's MMC controller needs to run at double the card clock rate for 8 bit DDR transfer modes. Interestingly, this is not needed for 4 bit DDR transfers. Different clock delays are needed for 8 bit eMMC DDR, due to the increased module clock rate. For the A80 though, the same values for 4 bit and 8 bit are shared. The new values for the other SoCs were from A83T user manual's "new timing mode" default values, which describes them in clock phase, rather than delay periods. These values were used without any modification. They may not be correct, but they work. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: sunxi: Support MMC_DDR52 timing modesChen-Yu Tsai1-5/+7
DDR transfer modes include UHS-1 DDR50 and MMC HS-DDR (or MMC_DDR52). Consider MMC_DDR52 when setting clock delays. Since MMC high speed mode goes up to 52 MHz instead of 50 MHz for SD, and this number is visible in the capability macro, increase the clock rate upper limit to 52 MHz. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: sanitize 'bus width' in debug outputWolfram Sang2-2/+2
The bus width is sometimes the actual bus width, and sometimes indices to different arrays encoding the bus width. In my debugging case "2" could mean 8-bit as well as 4-bit, which was extremly confusing. Let's use the human-readable actual bus width in all places. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: core: use the defined function to check whether card is removableJaehoon Chung1-5/+4
In linux/mmc/host.h, mmc_card_is_removable() is already defined. There is no reason that it doesn't use. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: sdhci-iproc: use sdhci_pltfm_unregister directlyJisheng Zhang1-6/+1
The sdhci_iproc_remove() is jsut a wrapper to sdhci_pltfm_unregister. So use the sdhci_pltfm_unregister() for the .remove hook directly. Signed-off-by: Jisheng Zhang <jszhang@marvell.com> Acked-by: Scott Branden <sbranden@broadcom.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: DT: sdhci-iproc: add bcm2835 compatibleStefan Wahren1-1/+4
Since sdhci-iproc can support bcm2835 we need add the compatible string to the binding. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Acked-by: Scott Branden <sbranden@broadcom.com> Acked-by: Eric Anholt <eric@anholt.net> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Scott Branden <sbranden@broadcom.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: sdhci-iproc: add bcm2835 supportStefan Wahren2-3/+18
Scott Branden from Broadcom said that the BCM2835 eMMC IP core is very similar to IPROC and share most of the quirks. So use this driver instead of separate one. The sdhci-iproc contains a better workaround for the clock domain crossing problem which doesn't need any delays. This results in a better write performance. Btw we get the rid of the SDHCI_CAPABILITIES hack in the sdhci_readl function. Suggested-by: Scott Branden <sbranden@broadcom.com> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Acked-by: Eric Anholt <eric@anholt.net> Acked-by: Scott Branden <sbranden@broadcom.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: sdhci-iproc: define MMC caps in platform dataStefan Wahren1-2/+3
This patch moves the definition of the MMC capabilities from the probe function into iproc platform data. After that we are able to add support for another platform more easily. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Suggested-by: Stephen Warren <swarren@wwwdotorg.org> Acked-by: Scott Branden <sbranden@broadcom.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: mmc_test: mention that '0' runs all testsWolfram Sang1-0/+1
I had to use the source to determine what I need to write to 'test' so that all tests are run. Let's mention this explicitly in 'testlist'. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: mmcif: don't depend on MMC_BLOCKWolfram Sang1-1/+1
I don't see a reason why a host driver should depend on the card driver. It also prevents that we can use the mmc_test driver. So, remove it. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: make MAN_BKOPS_EN message a debugWolfram Sang1-1/+1
IMO this info is only useful for developers. Most users won't need this information, since there is not much they can do about it. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: omap_hsmmc: don't print uninitialized variablesArnd Bergmann1-2/+2
When DT based probing is used but the DMA request fails, the driver will print uninitialized stack data from the rx_req and tx_req variables, as indicated by this warning: drivers/mmc/host/omap_hsmmc.c: In function 'omap_hsmmc_probe': drivers/mmc/host/omap_hsmmc.c:2162:3: warning: 'rx_req' may be used uninitialized in this function [-Wmaybe-uninitialized] dev_err(mmc_dev(host->mmc), "unable to obtain RX DMA engine channel %u\n", rx_req); This removes the DMA request line number from the warning, which is the easiest solution and won't hurt us any more as we are planning to remove the legacy code path anyway. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Tony Lindgren <tony@atomide.com> Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: sdhci-acpi: enable sdhci-acpi device to suspend/resume asynchronouslyFu, Zhonghui1-0/+2
This patch enables sdhci-acpi devices to suspend/resume asynchronously. This will improve system suspend/resume speed. After enabling the sdhci-acpi devices and all their child devices to suspend/resume asynchronously on ASUS T100TA, the system suspend-to-idle time is reduced from 1645ms to 1089ms, and the system resume time is reduced from 940ms to 908ms. Signed-off-by: Zhonghui Fu <zhonghui.fu@linux.intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: core: enable mmc host device to suspend/resume asynchronouslyFu, Zhonghui1-0/+1
This patch enables mmc hosts to suspend/resume asynchronously. This will improve system suspend/resume speed. After applying this patch and enabling all mmc hosts' child devices to suspend/resume asynchronously on ASUS T100TA, the system suspend-to-idle time is reduced from 1645ms to 1107ms, and the system resume time is reduced from 940ms to 914ms. Signed-off-by: Zhonghui Fu <zhonghui.fu@linux.intel.com> Acked-by: Venu Byravarasu <vbyravarasu@nvidia.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: sunxi: Support vqmmc regulatorChen-Yu Tsai1-0/+31
eMMC chips require 2 power supplies, vmmc for internal logic, and vqmmc for driving output buffers. vqmmc also controls signaling voltage. Most boards we've seen use the same regulator for both, nevertheless the 2 have different usages, and should be set separately. This patch adds support for vqmmc regulator supply, including voltage switching. The MMC core can use this to try different signaling voltages for eMMC. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: sunxi: Return error on mmc_regulator_set_ocr() fail in .set_ios opChen-Yu Tsai1-1/+4
Let .set_ios() fail if mmc_regulator_set_ocr() fails to enable and set a proper voltage for vmmc. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: sunxi: Document host init sequenceChen-Yu Tsai1-0/+12
sunxi_mmc_init_host() originated from Allwinner kernel sources. The magic numbers written to various registers was never documented. Add comments for values found in Allwinner user manuals. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: sdhci-iproc: Actually enable the clockStefan Wahren1-1/+8
The RPi firmware-based clocks driver can actually disable unused clocks, so when switching to use it we ended up losing our MMC clock once all devices were probed. This patch adopts the changes from 1e5a0a9a58e2 ("mmc: sdhci-bcm2835: Actually enable the clock") to sdhci-iproc. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Acked-by: Scott Branden <sbranden@broadcom.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: debugfs: Add a restriction to mmc debugfs clock settingChuanxiao Dong1-1/+1
Clock frequency values written to an mmc host should not be less than the minimum clock frequency which the mmc host supports. Signed-off-by: Yuan Juntao <juntaox.yuan@intel.com> Signed-off-by: Pawel Wodkowski <pawelx.wodkowski@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: sdhci-iproc: Clean up platform allocations if shdci init failsStefan Wahren1-1/+5
This patch adopts the changes from 475c9e43bfa7 ("mmc: sdhci-bcm2835: Clean up platform allocations if sdhci init fails") to sdhci-iproc. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Acked-by: Scott Branden <sbranden@broadcom.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: sdhci-of-arasan: Remove no-hispd and no-cmd23 quirks for sdhci-arasan4.9aRameshwar Prasad Sahu1-5/+0
The Arason SD host controller supports set block count command (cmd23) and high speed mode. This patch re-enable both of these features that was disabled. For device that doesn't support high speed, it should configure its capability register accordingly instead disables it explicitly. Signed-off-by: Rameshwar Prasad Sahu <rsahu@apm.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: host: omap_hsmmc: add a verbose print to enable CONFIG_REGULATOR_PBIASKishon Vijay Abraham I1-1/+4
Since v4.3+, CONFIG_REGULATOR_PBIAS should be enabled (for platforms that have PBIAS regulator) in order for MMC1 to work. Add a more verbose print to help enable CONFIG_REGULATOR_PBIAS for users using a olddefconfig or a custom .config. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Acked-by: Sebastian Reichel <sre@kernel.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: remove unnecessary assignment statements before returnMasahiro Yamada3-23/+6
Variable assignment just before return is redundant. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: core: pwrseq_simple: remove unused header filePeter Chen1-1/+0
Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: usdhi6rol0: use to_delayed_workGeliang Tang1-1/+1
Use to_delayed_work() instead of open-coding it. Signed-off-by: Geliang Tang <geliangtang@163.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: sh_mmcif: use to_delayed_workGeliang Tang1-1/+1
Use to_delayed_work() instead of open-coding it. Signed-off-by: Geliang Tang <geliangtang@163.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: sdricoh_cs: Less checks in sdricoh_init_mmc() after, error detectionMarkus Elfring1-12/+8
This issue was detected by using the Coccinelle software. Two pointer checks could be repeated by the sdricoh_init_mmc() function during error handling even if the relevant properties can be determined for the involved variables before by source code analysis. * This implementation detail could be improved by adjustments for jump targets according to the Linux coding style convention. * Drop an unnecessary initialisation for the variable "mmc" then. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-29mmc: sdricoh_cs: Delete unnecessary variable initialisationsMarkus Elfring1-3/+3
These variables will eventually be set to an appropriate value a bit later. * host * iobase * result Thus let us omit the explicit initialisation at the beginning. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-02-28Linux 4.5-rc6Linus Torvalds1-1/+1
2016-02-27do_last(): ELOOP failure exit should be done after leaving RCU modeAl Viro1-5/+4
... or we risk seeing a bogus value of d_is_symlink() there. Cc: stable@vger.kernel.org # v4.2+ Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-02-27should_follow_link(): validate ->d_seq after having decided to followAl Viro1-0/+5
... otherwise d_is_symlink() above might have nothing to do with the inode value we've got. Cc: stable@vger.kernel.org # v4.2+ Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-02-27namei: ->d_inode of a pinned dentry is stable only for positivesAl Viro1-2/+2
both do_last() and walk_component() risk picking a NULL inode out of dentry about to become positive, *then* checking its flags and seeing that it's not negative anymore and using (already stale by then) value they'd fetched earlier. Usually ends up oopsing soon after that... Cc: stable@vger.kernel.org # v3.13+ Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-02-27do_last(): don't let a bogus return value from ->open() et.al. to confuse usAl Viro1-0/+4
... into returning a positive to path_openat(), which would interpret that as "symlink had been encountered" and proceed to corrupt memory, etc. It can only happen due to a bug in some ->open() instance or in some LSM hook, etc., so we report any such event *and* make sure it doesn't trick us into further unpleasantness. Cc: stable@vger.kernel.org # v3.6+, at least Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-02-27fs: return -EOPNOTSUPP if clone is not supportedChristoph Hellwig1-2/+4
-EBADF is a rather confusing error if an operations is not supported, and nfsd gets rather upset about it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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