diff options
| author | Liming Sun <limings@nvidia.com> | 2024-06-12 18:52:37 -0400 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2024-07-08 15:02:33 +0200 |
| commit | f21adcb86653e2b2784bbc0f180c332b50c404df (patch) | |
| tree | 7f7065d24bc4af6d752d105ebe294f0e37e7243d /drivers/mmc | |
| parent | 1535085f99c554460966995ecec934b74185cd5c (diff) | |
mmc: dw_mmc: Add support for platform specific eMMC HW reset
This commit adds a new callback to allow drivers to support platform
specific eMMC HW reset.
Reviewed-by: David Thompson <davthompson@nvidia.com>
Signed-off-by: Liming Sun <limings@nvidia.com>
Link: https://lore.kernel.org/r/3df02ffa8bdaa74f5261c8914d2545b97fb3478a.1718213918.git.limings@nvidia.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/dw_mmc.c | 6 | ||||
| -rw-r--r-- | drivers/mmc/host/dw_mmc.h | 2 |
2 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 7195de2cde44..2333ef4893ee 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -1617,6 +1617,7 @@ static void dw_mci_hw_reset(struct mmc_host *mmc) { struct dw_mci_slot *slot = mmc_priv(mmc); struct dw_mci *host = slot->host; + const struct dw_mci_drv_data *drv_data = host->drv_data; int reset; if (host->use_dma == TRANS_MODE_IDMAC) @@ -1626,6 +1627,11 @@ static void dw_mci_hw_reset(struct mmc_host *mmc) SDMMC_CTRL_FIFO_RESET)) return; + if (drv_data && drv_data->hw_reset) { + drv_data->hw_reset(host); + return; + } + /* * According to eMMC spec, card reset procedure: * tRstW >= 1us: RST_n pulse width diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h index b504f7ae513a..6447b916990d 100644 --- a/drivers/mmc/host/dw_mmc.h +++ b/drivers/mmc/host/dw_mmc.h @@ -566,6 +566,7 @@ struct dw_mci_slot { * @execute_tuning: implementation specific tuning procedure. * @set_data_timeout: implementation specific timeout. * @get_drto_clks: implementation specific cycle count for data read timeout. + * @hw_reset: implementation specific HW reset. * * Provide controller implementation specific extensions. The usage of this * data structure is fully optional and usage of each member in this structure @@ -586,5 +587,6 @@ struct dw_mci_drv_data { void (*set_data_timeout)(struct dw_mci *host, unsigned int timeout_ns); u32 (*get_drto_clks)(struct dw_mci *host); + void (*hw_reset)(struct dw_mci *host); }; #endif /* _DW_MMC_H_ */ |