Signed-off-by: Ziyuan Xu xzy.xu@rock-chips.com ---
drivers/mmc/dw_mmc.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+)
diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c index 700f764..baf2280 100644 --- a/drivers/mmc/dw_mmc.c +++ b/drivers/mmc/dw_mmc.c @@ -384,6 +384,26 @@ static int dwmci_setup_bus(struct dwmci_host *host, u32 freq) }
#ifdef CONFIG_DM_MMC_OPS +static bool dwmci_card_busy(struct udevice *dev) +{ + struct mmc *mmc = mmc_get_mmc_dev(dev); +#else +static bool dwmci_card_busy(struct mmc *mmc) +{ +#endif + u32 status; + struct dwmci_host *host = (struct dwmci_host *)mmc->priv; + + /* + * Check the busy bit which is low when DAT[3:0] + * (the data lines) are 0000 + */ + status = dwmci_readl(host, DWMCI_STATUS); + + return !!(status & DWMCI_BUSY); +} + +#ifdef CONFIG_DM_MMC_OPS static int dwmci_set_ios(struct udevice *dev) { struct mmc *mmc = mmc_get_mmc_dev(dev); @@ -475,12 +495,14 @@ int dwmci_probe(struct udevice *dev) }
const struct dm_mmc_ops dm_dwmci_ops = { + .card_busy = dwmci_card_busy, .send_cmd = dwmci_send_cmd, .set_ios = dwmci_set_ios, };
#else static const struct mmc_ops dwmci_ops = { + .card_busy = dwmci_card_busy, .send_cmd = dwmci_send_cmd, .set_ios = dwmci_set_ios, .init = dwmci_init,