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| author | Stefano Babic <sbabic@denx.de> | 2010-02-05 15:04:43 +0100 |
|---|---|---|
| committer | Tom Rix <Tom.Rix@windriver.com> | 2010-03-07 12:36:36 -0600 |
| commit | 11fdade294b4d60c19ae861515aabddca1278deb (patch) | |
| tree | 395639b2c0124e1a4144bb6b9ecaa4b353393134 | |
| parent | 250de12bc2f7842807d25e16971c5bea59c3a4b1 (diff) | |
| download | u-boot-imx-11fdade294b4d60c19ae861515aabddca1278deb.zip u-boot-imx-11fdade294b4d60c19ae861515aabddca1278deb.tar.gz u-boot-imx-11fdade294b4d60c19ae861515aabddca1278deb.tar.bz2 | |
MMC: add weak function to detect MMC/SD card
Most controllers can check if there is a card in the slot.
However, they require pins that could be not available because
required by other functions and the detection of a card must
be performed in another way. This patch adds a weak function
that a board can implement to add its internal custom way
to check the presence of a MMC/SD card.
Signed-off-by: Stefano Babic <sbabic@denx.de>
| -rw-r--r-- | drivers/mmc/mmc.c | 7 | ||||
| -rw-r--r-- | include/mmc.h | 1 |
2 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index d91b9b7..3679225 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -36,6 +36,13 @@ static struct list_head mmc_devices; static int cur_dev_num = -1; +int __board_mmc_getcd(u8 *cd, struct mmc *mmc) { + return -1; +} + +int board_mmc_getcd(u8 *cd, struct mmc *mmc)__attribute__((weak, + alias("__board_mmc_getcd"))); + int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) { return mmc->send_cmd(mmc, cmd, data); diff --git a/include/mmc.h b/include/mmc.h index 2dc69ab..8973bc7 100644 --- a/include/mmc.h +++ b/include/mmc.h @@ -272,6 +272,7 @@ int mmc_init(struct mmc *mmc); int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size); struct mmc *find_mmc_device(int dev_num); void print_mmc_devices(char separator); +int board_mmc_getcd(u8 *cd, struct mmc *mmc); #ifndef CONFIG_GENERIC_MMC int mmc_legacy_init(int verbose); |