kernel/linux.git/drivers/mmc/core/debugfs.c, branch v6.18.21

mmc: debugfs: add card entry for quirks

2024-04-02T10:25:08+00:00

This is useful to check if a quirk has been applied for the connected mmc card. Signed-off-by: Rouven Czerwinski Link: https://lore.kernel.org/r/20240326094215.212930-2-r.czerwinski@pengutronix.de Signed-off-by: Ulf Hansson

mmc: debugfs: convert permissions to octal

2024-04-02T10:25:08+00:00

Convert the existing symbolic permissions to the octal presentation as this is the preferred representation for debugfs permissions. Signed-off-by: Rouven Czerwinski Link: https://lore.kernel.org/r/20240326094215.212930-1-r.czerwinski@pengutronix.de Signed-off-by: Ulf Hansson

mmc: debugfs: Allow host caps to be modified

2023-10-10T11:44:49+00:00

During board verification, there is a need to test the various supported eMMC/SD speed modes. However, since the framework chooses the best mode supported by the card and the host controller's caps, this currently necessitates changing the devicetree for every iteration. Allow the various speed mode host capabilities to be modified via debugfs in order to allow easier hardware verification. The values to be written are the raw MMC_CAP* values from include/linux/mmc/host.h. This is rather low-level, and these defines are not guaranteed to be stable, but it is perhaps good enough for the intended use case. MMC_CAP_AGGRESSIVE_PM can also be set, in order to be able to re-initialize the card without having to physically remove and re-insert it. /sys/kernel/debug/mmc0# grep timing ios timing spec: 9 (mmc HS200) // Turn on MMC_CAP_AGGRESSIVE_PM and re-trigger runtime suspend /sys/kernel/debug/mmc0# echo $(($(cat caps) | (1 << 7))) > caps /sys/kernel/debug/mmc0# echo on > /sys/bus/mmc/devices/mmc0\:0001/power/control /sys/kernel/debug/mmc0# echo auto > /sys/bus/mmc/devices/mmc0\:0001/power/control // MMC_CAP2_HS200_1_8V_SDR /sys/kernel/debug/mmc0# echo $(($(cat caps2) & ~(1 << 5))) > caps2 /sys/kernel/debug/mmc0# echo on > /sys/bus/mmc/devices/mmc0\:0001/power/control /sys/kernel/debug/mmc0# grep timing ios timing spec: 8 (mmc DDR52) Signed-off-by: Vincent Whitchurch Link: https://lore.kernel.org/r/20230929-mmc-caps-v2-2-11a4c2d94f15@axis.com Signed-off-by: Ulf Hansson

mmc: core: remove unnecessary (void*) conversions

2023-04-03T12:36:12+00:00

Pointer variables of void * type do not require type cast. Signed-off-by: Yu Zhe Link: https://lore.kernel.org/r/20230328031049.22749-1-yuzhe@nfschina.com Signed-off-by: Ulf Hansson

mmc: debugfs: Fix file release memory leak

2022-07-12T10:25:36+00:00

When using single_open() for opening, single_release() should be used instead of seq_release(), otherwise there is a memory leak. Reported-by: Hulk Robot Signed-off-by: Wei Yongjun Acked-by: Adrian Hunter Link: https://lore.kernel.org/r/20220608090152.179395-1-weiyongjun1@huawei.com Signed-off-by: Ulf Hansson

mmc: debugfs: Add debug fs error state entry for mmc driver

2022-07-12T10:25:35+00:00

Add debug fs entry error state to query eMMC and SD card errors statistics. If any errors occurred in eMMC and SD card driver level then err_state value will be set to 1. Signed-off-by: Liangliang Lu Signed-off-by: Sayali Lokhande Signed-off-by: Bao D. Nguyen Signed-off-by: Shaik Sajida Bhanu Acked-by: Adrian Hunter Link: https://lore.kernel.org/r/1653674036-21829-5-git-send-email-quic_c_sbhanu@quicinc.com Signed-off-by: Ulf Hansson

mmc: debugfs: Add debug fs entry for mmc driver

2022-07-12T10:25:34+00:00

Add debug fs entry to query eMMC and SD card errors statistics Signed-off-by: Liangliang Lu Signed-off-by: Sayali Lokhande Signed-off-by: Bao D. Nguyen Signed-off-by: Shaik Sajida Bhanu Acked-by: Adrian Hunter Link: https://lore.kernel.org/r/1653674036-21829-4-git-send-email-quic_c_sbhanu@quicinc.com Signed-off-by: Ulf Hansson

mmc: debugfs: add description for module parameter

2021-06-14T11:57:43+00:00

Make it obvious what this is for. Signed-off-by: Wolfram Sang Link: https://lore.kernel.org/r/20210604104459.7574-1-wsa+renesas@sang-engineering.com Signed-off-by: Ulf Hansson

mmc: core: Use DEFINE_DEBUGFS_ATTRIBUTE instead of DEFINE_SIMPLE_ATTRIBUTE

2020-05-28T09:21:01+00:00

Fixes coccicheck warning: drivers/mmc/core/debugfs.c:222:0-23: WARNING: mmc_clock_fops should be defined with DEFINE_DEBUGFS_ATTRIBUTE Use DEFINE_DEBUGFS_ATTRIBUTE rather than DEFINE_SIMPLE_ATTRIBUTE for debugfs files Fixes: 703aae3d09a4b ("mmc: add a file to debugfs for changing host clock at runtime") Fixes: a04c50aaa916f ("mmc: core: no need to check return value of debugfs_create functions") Reported-by: Hulk Robot Signed-off-by: Zou Wei Link: https://lore.kernel.org/r/1587633319-19835-1-git-send-email-zou_wei@huawei.com Signed-off-by: Ulf Hansson

Merge tag 'mmc-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

2019-07-12T01:11:21+00:00

Pull MMC updates from Ulf Hansson: "MMC core: - Let the dma map ops deal with bouncing and drop dma_max_pfn() from the dma-mapping interface for ARM - Convert the generic MMC DT doc to YAML schemas - Drop questionable support for powered-on re-init of SDIO cards at runtime resume and for SDIO HW reset - Prevent questionable re-init of powered-on removable SDIO cards at system resume - Cleanup and clarify some SDIO core code MMC host: - tmio: Make runtime PM enablement more flexible for variants - tmio/renesas_sdhi: Rename DT doc tmio_mmc.txt to renesas,sdhi.txt to clarify - sdhci-pci: Add support for Intel EHL - sdhci-pci-o2micro: Enable support for 8-bit bus - sdhci-msm: Prevent acquiring a mutex while holding a spin_lock - sdhci-of-esdhc: Improve clock management and tuning - sdhci_am654: Enable support for 4 and 8-bit bus on J721E - sdhci-sprd: Use pinctrl for a proper signal voltage switch - sdhci-sprd: Add support for HS400 enhanced strobe mode - sdhci-sprd: Enable PHY DLL and allow delay config to stabilize the clock - sdhci-sprd: Add support for optional gate clock - sunxi-mmc: Convert DT doc to YAML schemas - meson-gx: Add support for broken DRAM access for DMA MEMSTICK core: - Fixup error path of memstick_init()" * tag 'mmc-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (52 commits) mmc: sdhci_am654: Add dependency on MMC_SDHCI_AM654 mmc: alcor: remove a redundant greater or equal to zero comparison mmc: sdhci-msm: fix mutex while in spinlock mmc: sdhci_am654: Make some symbols static dma-mapping: remove dma_max_pfn mmc: core: let the dma map ops handle bouncing dt-binding: mmc: rename tmio_mmc.txt to renesas,sdhi.txt mmc: sdhci-sprd: Add pin control support for voltage switch dt-bindings: mmc: sprd: Add pinctrl support mmc: sdhci-sprd: Add start_signal_voltage_switch ops mmc: sdhci-pci: Add support for Intel EHL mmc: tmio: Use dma_max_mapping_size() instead of a workaround mmc: sdio: Drop unused in-parameter from mmc_sdio_init_card() mmc: sdio: Drop unused in-parameter to mmc_sdio_reinit_card() mmc: sdio: Don't re-initialize powered-on removable SDIO cards at resume mmc: sdio: Drop powered-on re-init at runtime resume and HW reset mmc: sdio: Move comment about re-initialization to mmc_sdio_reinit_card() mmc: sdio: Drop mmc_claim|release_host() in mmc_sdio_power_restore() mmc: sdio: Turn sdio_run_irqs() into static mmc: sdhci: Fix indenting on SDHCI_CTRL_8BITBUS ...