In case the cyclic framework is enabled, poll the card detect of already initialized cards and deinitialize them in case they are removed. Since the card initialization is a longer process and card initialization is done on first access to an uninitialized card anyway, avoid initializing newly detected uninitialized cards in the cyclic callback.
Signed-off-by: Marek Vasut <[email protected]> --- Cc: Jaehoon Chung <[email protected]> Cc: Peng Fan <[email protected]> Cc: Simon Glass <[email protected]> --- V2: Move the cyclic registration/unregistration into mmc init/deinit V3: Replace if (CONFIG_IS_ENABLED(CYCLIC)...) with #if as the former does not work with structure members V4: Stuff the code with CONFIG_IS_ENABLED() variants to avoid #ifdefs V5: Rebase on u-boot/next V6: Rebase on u-boot/next --- drivers/mmc/mmc.c | 25 +++++++++++++++++++++++++ include/mmc.h | 3 +++ 2 files changed, 28 insertions(+) diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 0b881f11b4a..c787ff6bc49 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -3039,6 +3039,20 @@ static int mmc_complete_init(struct mmc *mmc) return err; } +static void __maybe_unused mmc_cyclic_cd_poll(struct cyclic_info *c) +{ + struct mmc *m = CONFIG_IS_ENABLED(CYCLIC, (container_of(c, struct mmc, cyclic)), (NULL)); + + if (!m->has_init) + return; + + if (mmc_getcd(m)) + return; + + mmc_deinit(m); + m->has_init = 0; +} + int mmc_init(struct mmc *mmc) { int err = 0; @@ -3061,6 +3075,14 @@ int mmc_init(struct mmc *mmc) if (err) pr_info("%s: %d, time %lu\n", __func__, err, get_timer(start)); + if (CONFIG_IS_ENABLED(CYCLIC, (!mmc->cyclic.func), (NULL))) { + /* Register cyclic function for card detect polling */ + CONFIG_IS_ENABLED(CYCLIC, (cyclic_register(&mmc->cyclic, + mmc_cyclic_cd_poll, + 100 * 1000, + mmc->cfg->name))); + } + return err; } @@ -3068,6 +3090,9 @@ int mmc_deinit(struct mmc *mmc) { u32 caps_filtered; + if (CONFIG_IS_ENABLED(CYCLIC, (mmc->cyclic.func), (NULL))) + CONFIG_IS_ENABLED(CYCLIC, (cyclic_unregister(&mmc->cyclic))); + if (!CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) && !CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) && !CONFIG_IS_ENABLED(MMC_HS400_SUPPORT)) diff --git a/include/mmc.h b/include/mmc.h index f508cd15700..0044ff8bef7 100644 --- a/include/mmc.h +++ b/include/mmc.h @@ -14,6 +14,7 @@ #include <linux/sizes.h> #include <linux/compiler.h> #include <linux/dma-direction.h> +#include <cyclic.h> #include <part.h> struct bd_info; @@ -757,6 +758,8 @@ struct mmc { bool hs400_tuning:1; enum bus_mode user_speed_mode; /* input speed mode from user */ + + CONFIG_IS_ENABLED(CYCLIC, (struct cyclic_info cyclic)); }; #if CONFIG_IS_ENABLED(DM_MMC) -- 2.45.2
