For the HS200/HS400/SDR104, tuning is needed to determine the optimal sampling point. Actual tuning procedure is provided by specific host controller driver.
Signed-off-by: Ziyuan Xu xzy.xu@rock-chips.com ---
drivers/mmc/dw_mmc.c | 18 ++++++++++++++++++ include/dwmmc.h | 1 + 2 files changed, 19 insertions(+)
diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c index 7e9ffc2..c05288c 100644 --- a/drivers/mmc/dw_mmc.c +++ b/drivers/mmc/dw_mmc.c @@ -404,6 +404,22 @@ static bool dwmci_card_busy(struct mmc *mmc) }
#ifdef CONFIG_DM_MMC_OPS +static int dwmci_execute_tuning(struct udevice *dev, u32 opcode) +{ + struct mmc *mmc = mmc_get_mmc_dev(dev); +#else +static int dwmci_execute_tuning(struct mmc *mmc, u32 opcode) +{ +#endif + struct dwmci_host *host = (struct dwmci_host *)mmc->priv; + + if (!host->execute_tuning) + return -EIO; + + return host->execute_tuning(host, opcode); +} + +#ifdef CONFIG_DM_MMC_OPS static int dwmci_set_ios(struct udevice *dev) { struct mmc *mmc = mmc_get_mmc_dev(dev); @@ -498,6 +514,7 @@ const struct dm_mmc_ops dm_dwmci_ops = { .card_busy = dwmci_card_busy, .send_cmd = dwmci_send_cmd, .set_ios = dwmci_set_ios, + .execute_tuning = dwmci_execute_tuning, };
#else @@ -506,6 +523,7 @@ static const struct mmc_ops dwmci_ops = { .send_cmd = dwmci_send_cmd, .set_ios = dwmci_set_ios, .init = dwmci_init, + .execute_tuning = dwmci_execute_tuning, }; #endif
diff --git a/include/dwmmc.h b/include/dwmmc.h index 4dda009..95be7c2 100644 --- a/include/dwmmc.h +++ b/include/dwmmc.h @@ -180,6 +180,7 @@ struct dwmci_host { * @freq: Frequency the host is trying to achieve */ unsigned int (*get_mmc_clk)(struct dwmci_host *host, uint freq); + int (*execute_tuning)(struct dwmci_host *host, u32 opcode); #ifndef CONFIG_BLK struct mmc_config cfg; #endif