- 31 Aug, 2017 1 commit
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Jerome Brunet authored
Using __bf_shf does not compile on arm 32 architecture. This has gone unnoticed till now cause the driver is only used on arm64. In addition, __bf_shf was already used in the driver without any issue. It was used on a constant value, so the call was probably optimized away. Replace __bf_shf by __ffs fixes the problem Signed-off-by:
Jerome Brunet <jbrunet@baylibre.com> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
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- 30 Aug, 2017 39 commits
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Zhoujie Wu authored
Enable runtime pm support for xenon controller, which uses 50ms auto runtime suspend by default. Reimplement system standby based on runtime pm API. Introduce restore_needed to restore the Xenon specific registers when resume. Signed-off-by:
Zhoujie Wu <zjwu@marvell.com> Acked-by:
Adrian Hunter <adrian.hunter@intel.com> Signed-off-by:
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Ulf Hansson authored
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Adrian Hunter authored
mmc_start_areq() is an internal mmc core API. Move the declaration accordingly. Signed-off-by:
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Srinivas Kandagatla authored
It does not make sense for qcom dml code to be a seperate module, as this has just 2 helper functions specific to qcom, and used directly by mmci driver, so just compile this along with main mmci driver. This would also fix issues arrising due to Kconfig combinations between mmci and qcom dml. Signed-off-by:
Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by:
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Maxime Ripard authored
We might be into some troubles if the bootloader misconfigured the MMC controller. We currently only de-assert the reset line at probe time, which means that if the device was already out of reset, we're going to keep whatever state was set already. Switch to a reset instead of the deassert to have a device in a pristine state when we start operating. Signed-off-by:
Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by:
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Maxime Ripard authored
The reset hook was left implemented. Provide a dumb implementation so that client drivers can depend on it. Signed-off-by:
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Jerome Brunet authored
Rework tuning function of the rx phase. Now that the phase can be more precisely set using CCF, test more phase setting and find the largest working window. Then the tuning selected is the one at the center of the window. This rework allows to use new modes, such as UHS SDR50 Reviewed-by:
Kevin Hilman <khilman@baylibre.com> Signed-off-by:
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Jerome Brunet authored
Initial default tx phase was set to 0 while the datasheet recommends 270. Some cards fails to initialize with this setting and eMMC mode DDR52 does not work. Changing this setting to 270 fixes these issues, without any regression so far Reviewed-by:
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Jerome Brunet authored
Implement voltage switch callback (shamelessly copied from sunxi mmc driver). This allow, with the appropriate tuning function, to use SD ultra high speed modes. Reviewed-by:
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Jerome Brunet authored
Several phases can be controlled on the meson-gx controller, the core, tx and rx clock phase. The tx and rx uses delays to allow more fine grained setting of the phase. To properly compute the phase using delays, accessing the clock rate is necessary. Instead of ad-hoc functions, use the common clock framework to set the clock phases (and access the clock rate while doing it). Acked-by:
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Jerome Brunet authored
Implement the card_busy callback to be able to verify that the card is done dealing with voltage switch, when the support is added later on. Reviewed-by:
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Jerome Brunet authored
No functional change, just improve interrupt handler readability Reviewed-by:
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Jerome Brunet authored
It seems that the mmc clock is also used and required, somehow, by the controller itself. It is shown during init, when writing to CFG while the divider is set to 0 will crash the SoC. During a voltage switch, the controller may crash and the card may then fail to exit busy state if the clock is stopped. To avoid this, it is best to keep the clock running for the controller, except during rate change. However, we still need to be able to gate the clock out of the SoC. Let's use the pinmux for this, and fallback to gpio mode (pulled-down) when we need to gate the clock Reviewed-by:
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Jerome Brunet authored
In DDR modes, meson mmc controller requires an input rate twice as fast as the output rate Fixes: 51c5d844 ("MMC: meson: initial support for GX platforms") Reviewed-by:
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Jerome Brunet authored
Thanks to devm, carrying the clock structure around after init is not necessary. Rework the function to remove these from the controller host data. Finally, set initial mmc clock rate before enabling it, simplifying the exit condition. Reviewed-by:
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Jerome Brunet authored
Clean-up clk_set function to prepare the next changes (DDR and clk-stop) Reviewed-by:
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Jerome Brunet authored
Remove conditional write of cfg register. Warn if set_clk fails for some reason. Consistently use host->dev instead of mixing with mmc_dev(mmc) Reviewed-by:
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Jerome Brunet authored
cfg init function overwrite values set in the clk init function Remove the cfg pokes from the clk init. Actually, trying to use the CLK_AUTO, like initially tried in clk_init, would break the card initialization Reviewed-by:
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Jerome Brunet authored
On boot, the clock divider value is 0 which is a weird unsupported value. For example, accessing the cfg register with this value set would crash the SoC. Previous change removed 0 as possible value for CCF but forgot to properly initialize the register before registering the clock. This leads to the CCF finding an illegal value, which it complains about. Initialize the register properly in a standalone patch so the fix can be picked up if necessary. The change this fixed is: "mmc: meson-gx: remove CLK_DIVIDER_ALLOW_ZERO clock flag". Reported-by:
Neil Armstrong <narmstrong@baylibre.com> Signed-off-by:
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Arvind Yadav authored
amba_id are not supposed to change at runtime. All functions working with const amba_id. So mark the non-const structs as const. Signed-off-by:
Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by:
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Shawn Lin authored
The intention for this patch is to help folks debug the failure like this: dwmmc_rockchip fe320000.dwmmc: IDMAC supports 32-bit address mode. dwmmc_rockchip fe320000.dwmmc: Using internal DMA controller. dwmmc_rockchip fe320000.dwmmc: Version ID is 270a dwmmc_rockchip fe320000.dwmmc: DW MMC controller at irq 28,32 bit host data width,256 deep fifo dwmmc_rockchip fe320000.dwmmc: Got CD GPIO mmc_host mmc0: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0) mmc_host mmc0: Bus speed (slot 0) = 50000000Hz (slot req 50000000Hz, actual 50000000HZ div = 0) mmc0: new high speed SDHC card at address 0007 mmcblk: probe of mmc0:0007 failed with error -28 The reason may be some buggy userspace daemon miss the disk remove uevent sometimes so it would finally make the SD card not work. So from the dmesg it only shows a errno of -28 but still don't understand what happened. For quick reproduce this, we could set max_devices to 8 and run for i in $(seq 1 9); do echo "========================" $i echo fe320000.dwmmc > /sys/bus/platform/drivers/dwmmc_rockchip/unbind sleep .5 echo fe320000.dwmmc > /sys/bus/platform/drivers/dwmmc_rockchip/bind sleep .5 mount -t vfat /dev/mmcblk0 /mnt sleep .5 done Another possible reason would be the device has more partitions than what we support, so that they have to increase their max_devices. Signed-off-by:
Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by:
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Masahiro Yamada authored
This will be useful when drivers want to reuse either suspend or resume callback instead of whole of sdhci_pltfm_pmops. Signed-off-by:
Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by:
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Masahiro Yamada authored
This commit provides similar cleanups as commit 83eacdfa ("mmc: sdhci: disable the clock in sdhci_pltfm_unregister()") did for unregister hooks. sdhci-brcmstb.c and sdhci-sirf.c implement their own suspend/resume hooks to handle pltfm_host->clk. Move clock handling to sdhci_pltfm.c so that the drivers can reuse sdhci_pltfm_pmops. The following drivers did not previously touch pltfm_host->clk during suspend/resume, but now do: - sdhci-bcm-kona.c - sdhci-dove.c - sdhci-iproc.c - sdhci-pxav2.c - sdhci-tegra.c - sdhci-xenon.c Signed-off-by:
Al Cooper <alcooperx@gmail.com> Signed-off-by:
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Masahiro Yamada authored
The difference between sdhci_pxav2_remove() and sdhci_pltfm_unregister() is clk_put(). It will go away by using the managed resource clk, then sdhci_pltfm_unregister() can be reused. Also, rename the jump labels to say what the goto does. (Coding style suggested by Documentation/process/coding-style.rst) Signed-off-by:
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Masahiro Yamada authored
Currently, the probe function initializes the PHY, but PHY settings are lost during the sleep state. Restore the PHY registers when resuming. To facilitate this, split sdhci_cdns_phy_init() into the DT parse part and PHY update part so that the latter can be invoked from the resume hook. Signed-off-by:
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Hu Ziji authored
Support HS400 Enhanced Strobe feature in Xenon. Enable Enhanced Strobe together with Data Strobe. Disable Enhanced Strobe when eMMC is not in HS400 mode. Signed-off-by:
Hu Ziji <huziji@marvell.com> Signed-off-by:
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Kishon Vijay Abraham I authored
TI's implementation of sdhci controller used in DRA7 SoC's has CRC in responses with length 136 bits. Add quirk to indicate the controller has CRC in MMC_RSP_136. If this quirk is set sdhci library shouldn't shift the response present in SDHCI_RESPONSE register. Signed-off-by:
Kishon Vijay Abraham I <kishon@ti.com> Acked-by:
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Adrian Hunter authored
Read each register only once and move the code to a separate function so that it is not jammed against the 80 column margin. Signed-off-by:
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Jerome Brunet authored
Remove unused clock rate defines. These should not be defined but requested from the clock framework. Also correct typo on the DELAY register Reviewed-by:
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Jerome Brunet authored
Remove CLK_DIVIDER_ALLOW_ZERO. This flag means that a 1 based divider with a 0 value will behave as a bypass clock The mmc divider does not behave like this, a 0 value disables the clock Remove this flag so CCF never allows a 0 value on this clock Fixes: 51c5d844 ("MMC: meson: initial support for GX platforms") Reviewed-by:
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Jerome Brunet authored
CCF generic mux will shift the mask using the value defined in shift Define the mask accordingly Reviewed-by:
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Linus Walleij authored
Instead of passing a block device to mmc_blk_ioctl[_multi]_cmd(), let's pass struct mmc_blk_data() so we operate ioctl()s on the MMC block device representation rather than the vanilla block device. This saves a little duplicated code and makes it possible to issue ioctl()s not targeted for a specific block device but rather for a specific partition/area. Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
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Linus Walleij authored
Instead of passing a struct mmc_blk_data * to mmc_blk_part_switch() let's pass the actual partition type we want to switch to. This is necessary in order not to have a block device with a backing mmc_blk_data and request queue and all for every hardware partition, such as RPMB. Signed-off-by:
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Linus Walleij authored
mmc_blk_ioctl() calls either mmc_blk_ioctl_cmd() or mmc_blk_ioctl_multi_cmd() and each of these make the same check. Factor it into a new helper function, call it on both branches of the switch() statement and save a chunk of duplicate code. Cc: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by:
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Linus Walleij authored
If we don't have the block layer enabled, we do not present card status and extcsd in the debugfs. Debugfs is not ABI, and maintaining files of no relevance for non-block devices comes at a high maintenance cost if we shall support it with the block layer compiled out. The debugfs entries suffer from all the same starvation issues as the other userspace things, under e.g. a heavy dd operation. The expected number of debugfs users utilizing these two debugfs files is already low as there is an ioctl() to get the same information using the mmc-tools, and of these few users the expected number of people using it on SDIO or combo cards are expected to be zero. It is therefore logical to move this over to the block layer when it is enabled, using the new custom requests and issue it using the block request queue. On the other hand it moves some debugfs code from debugfs.c and into block.c. Tested during heavy dd load by cat:in the status file. Signed-off-by:
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Linus Walleij authored
This function retrieves the status of the card with the default number of retries. Since the block layer wants to use this, and since the block layer is a loadable kernel module, we need to export this symbol. Signed-off-by:
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Linus Walleij authored
We have a data pointer for the ioctl() data, but we need to pass other data along with the DRV_OP:s, so make this a void * so it can be reused. Signed-off-by:
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Axel Lin authored
Get rid of boilerplate code by using module_platform_driver macro. Signed-off-by:
Axel Lin <axel.lin@ingics.com> Acked-by:
Jan Glauber <jglauber@cavium.com> Signed-off-by:
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Fabrizio Castro authored
Signed-off-by:
Fabrizio Castro <fabrizio.castro@bp.renesas.com> Reviewed-by:
Chris Paterson <chris.paterson2@renesas.com> Acked-by:
Simon Horman <horms+renesas@verge.net.au> Acked-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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