kernel/linux.git/drivers/mmc/core/sd.c, branch v6.12.80

mmc: Add quirk to disable DDR50 tuning

2025-06-27T10:11:26+00:00

[ Upstream commit 9510b38dc0ba358c93cbf5ee7c28820afb85937b ] Adds the MMC_QUIRK_NO_UHS_DDR50_TUNING quirk and updates mmc_execute_tuning() to return 0 if that quirk is set. This fixes an issue on certain Swissbit SD cards that do not support DDR50 tuning where tuning requests caused I/O errors to be thrown. Signed-off-by: Erick Shepherd Acked-by: Adrian Hunter Link: https://lore.kernel.org/r/20250331221337.1414534-1-erick.shepherd@ni.com Signed-off-by: Ulf Hansson Signed-off-by: Sasha Levin

mmc: core: Add SD card quirk for broken poweroff notification

2024-12-14T19:03:40+00:00

[ Upstream commit cd068d51594d9635bf6688fc78717572b78bce6a ] GIGASTONE Gaming Plus microSD cards manufactured on 02/2022 report that they support poweroff notification and cache, but they are not working correctly. Flush Cache bit never gets cleared in sd_flush_cache() and Poweroff Notification Ready bit also never gets set to 1 within 1 second from the end of busy of CMD49 in sd_poweroff_notify(). This leads to I/O error and runtime PM error state. I observed that the same card manufactured on 01/2024 works as expected. This problem seems similar to the Kingston cards fixed with commit c467c8f08185 ("mmc: Add MMC_QUIRK_BROKEN_SD_CACHE for Kingston Canvas Go Plus from 11/2019") and should be handled using quirks. CID for the problematic card is here. 12345641535443002000000145016200 Manufacturer ID is 0x12 and defined as CID_MANFID_GIGASTONE as of now, but would like comments on what naming is appropriate because MID list is not public and not sure it's right. Signed-off-by: Keita Aihara Link: https://lore.kernel.org/r/20240913094417.GA4191647@sony.com Signed-off-by: Ulf Hansson Signed-off-by: Sasha Levin

mmc: sd: SDUC Support Recognition

2024-12-14T19:03:11+00:00

[ Upstream commit fce2ce78af1e14dc1316aaddb5b3308be05cf452 ] Ultra Capacity SD cards (SDUC) was already introduced in SD7.0. Those cards support capacity larger than 2TB and up to including 128TB. ACMD41 was extended to support the host-card handshake during initialization. The card expects that the HCS & HO2T bits to be set in the command argument, and sets the applicable bits in the R3 returned response. On the contrary, if a SDUC card is inserted to a non-supporting host, it will never respond to this ACMD41 until eventually, the host will timed out and give up. Also, add SD CSD version 3.0 - designated for SDUC, and properly parse the csd register as the c_size field got expanded to 28 bits. Do not enable SDUC for now - leave it to the last patch in the series. Tested-by: Ricky WU Reviewed-by: Adrian Hunter Signed-off-by: Avri Altman Link: https://lore.kernel.org/r/20241006051148.160278-2-avri.altman@wdc.com Signed-off-by: Ulf Hansson Stable-dep-of: 869d37475788 ("mmc: core: Use GFP_NOIO in ACMD22") Signed-off-by: Sasha Levin

mmc: core Convert UNSTUFF_BITS macro to inline function

2024-09-03T12:34:24+00:00

The UNSTUFF_BITS macro, which is defined in both drivers/mmc/core/mmc.c and drivers/mmc/core/sd.c, has been converted to an inline function to improve readability, maintainability, and type safety. Signed-off-by: Avri Altman Link: https://lore.kernel.org/r/20240902123331.3566447-1-avri.altman@wdc.com Signed-off-by: Ulf Hansson

mmc: core: Replace the argument of mmc_sd_switch() with defines

2024-09-03T12:14:51+00:00

Replace with already defined values for readability. While at it, let's also change the mode-parameter from an int to bool, as the only used values are 0 or 1. Signed-off-by: Chanwoo Lee Link: https://lore.kernel.org/r/20240829024709.402285-1-cw9316.lee@samsung.com Signed-off-by: Ulf Hansson

mmc: core: apply SD quirks earlier during probe

2024-08-26T11:07:26+00:00

Applying MMC_QUIRK_BROKEN_SD_CACHE is broken, as the card's SD quirks are referenced in sd_parse_ext_reg_perf() prior to the quirks being initialized in mmc_blk_probe(). To fix this problem, let's split out an SD-specific list of quirks and apply in mmc_sd_init_card() instead. In this way, sd_read_ext_regs() to has the available information for not assigning the SD_EXT_PERF_CACHE as one of the (un)supported features, which in turn allows mmc_sd_init_card() to properly skip execution of sd_enable_cache(). Fixes: c467c8f08185 ("mmc: Add MMC_QUIRK_BROKEN_SD_CACHE for Kingston Canvas Go Plus from 11/2019") Signed-off-by: Jonathan Bell Co-developed-by: Keita Aihara Signed-off-by: Keita Aihara Reviewed-by: Dragan Simic Reviewed-by: Avri Altman Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20240820230631.GA436523@sony.com Signed-off-by: Ulf Hansson

mmc: core: constify the struct device_type usage

2024-02-27T12:48:36+00:00

Since commit aed65af1cc2f ("drivers: make device_type const"), the driver core can properly handle constant struct device_type. Move the sdio_type, sd_type and mmc_type variables to be constant structures as well, placing it into read-only memory which can not be modified at runtime. Cc: Greg Kroah-Hartman Signed-off-by: Ricardo B. Marliere Link: https://lore.kernel.org/r/20240219-device_cleanup-mmc-v1-1-1910e283cf5a@marliere.net Signed-off-by: Ulf Hansson

mmc: core: Add host specific tuning support for SD HS mode

2023-08-25T09:45:51+00:00

To support the need for host specific tuning for SD high-speed mode, let's add two new optional callbacks, ->prepare|execute_sd_hs_tuning() and let's call them when switching into the SD high-speed mode. Note that, during the tuning process it's also needed for host drivers to send commands to the SD card to verify that the tuning process succeeds. Therefore, let's also share the corresponding functions from the core to allow this. Signed-off-by: Wenchao Chen Link: https://lore.kernel.org/r/20230825091743.15613-2-wenchao.chen@unisoc.com [Ulf: Dropped unnecessary function declarations and updated the commit msg] Signed-off-by: Ulf Hansson

mmc: Add MMC_QUIRK_BROKEN_SD_CACHE for Kingston Canvas Go Plus from 11/2019

2023-06-20T11:19:34+00:00

This microSD card never clears Flush Cache bit after cache flush has been started in sd_flush_cache(). This leads e.g. to failure to mount file system. Add a quirk which disables the SD cache for this specific card from specific manufacturing date of 11/2019, since on newer dated cards from 05/2023 the cache flush works correctly. Fixes: 08ebf903af57 ("mmc: core: Fixup support for writeback-cache for eMMC and SD") Signed-off-by: Marek Vasut Link: https://lore.kernel.org/r/20230620102713.7701-1-marex@denx.de Signed-off-by: Ulf Hansson

mmc: core: Normalize the error handling branch in sd_read_ext_regs()

2022-12-07T12:29:14+00:00

Let's use pr_err() to output the error messages and let's extend a comment to clarify why returning 0 (success) in one case make sense. Fixes: c784f92769ae ("mmc: core: Read the SD function extension registers for power management") Signed-off-by: Zhen Lei [Ulf: Clarified the comment and the commit-msg] Link: https://lore.kernel.org/r/20221130134920.2109-1-thunder.leizhen@huawei.com Signed-off-by: Ulf Hansson