diff options
| -rw-r--r-- | drivers/mmc/host/s3cmci.c | 19 | ||||
| -rw-r--r-- | include/asm-arm/plat-s3c24xx/mci.h | 1 |
2 files changed, 19 insertions, 1 deletions
diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c index 6f1b474e33b..62d73d3497f 100644 --- a/drivers/mmc/host/s3cmci.c +++ b/drivers/mmc/host/s3cmci.c @@ -984,6 +984,18 @@ static void s3cmci_send_request(struct mmc_host *mmc) enable_irq(host->irq); } +static int s3cmci_card_present(struct s3cmci_host *host) +{ + struct s3c24xx_mci_pdata *pdata = host->pdata; + int ret; + + if (pdata->gpio_detect == 0) + return -ENOSYS; + + ret = s3c2410_gpio_getpin(pdata->gpio_detect) ? 0 : 1; + return ret ^ pdata->detect_invert; +} + static void s3cmci_request(struct mmc_host *mmc, struct mmc_request *mrq) { struct s3cmci_host *host = mmc_priv(mmc); @@ -992,7 +1004,12 @@ static void s3cmci_request(struct mmc_host *mmc, struct mmc_request *mrq) host->cmd_is_stop = 0; host->mrq = mrq; - s3cmci_send_request(mmc); + if (s3cmci_card_present(host) == 0) { + dbg(host, dbg_err, "%s: no medium present\n", __func__); + host->mrq->cmd->error = -ENOMEDIUM; + mmc_request_done(mmc, mrq); + } else + s3cmci_send_request(mmc); } static void s3cmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) diff --git a/include/asm-arm/plat-s3c24xx/mci.h b/include/asm-arm/plat-s3c24xx/mci.h index 4f4ccd18f0c..2d0852ac3b2 100644 --- a/include/asm-arm/plat-s3c24xx/mci.h +++ b/include/asm-arm/plat-s3c24xx/mci.h @@ -3,6 +3,7 @@ struct s3c24xx_mci_pdata { unsigned int wprotect_invert : 1; + unsigned int detect_invert : 1; /* set => detect active high. */ unsigned int gpio_detect; unsigned int gpio_wprotect; |