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authorThierry Reding <thierry.reding@avionic-design.de>2012-01-02 01:15:36 +0000
committerAndy Fleming <afleming@freescale.com>2012-01-08 21:28:27 -0600
commit314284b1567f1ce29c19060641e7f213146f7ab8 (patch)
tree116155fe43126dbd7a94cff179e16b084c9f1e04 /board/freescale/mx53loco/mx53loco.c
parentbfe6f6235fdfa130ad8c5a8898ef4d3a37bcad8c (diff)
downloadu-boot-linaro-stable-314284b1567f1ce29c19060641e7f213146f7ab8.tar.gz
mmc: Change board_mmc_getcd() function prototype.
The new API no longer uses the extra cd parameter that was used to store the card presence state. Instead, this information is returned via the function's return value. board_mmc_getcd() returns -1 to indicate that no card-detection mechanism is implemented; 0 indicates that no card is present and 1 is returned if it was detected that a card is present. The rationale for this change can be found in the following email thread: http://lists.denx.de/pipermail/u-boot/2011-November/110180.html In summary, the old API was not consistent with the rest of the MMC API which always passes a struct mmc as the first parameter. Furthermore the cd parameter was used to mean "card absence" in some implementations and "card presence" in others. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Tested-by: Jason Liu <jason.hui@linaro.org>
Diffstat (limited to 'board/freescale/mx53loco/mx53loco.c')
-rw-r--r--board/freescale/mx53loco/mx53loco.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/board/freescale/mx53loco/mx53loco.c b/board/freescale/mx53loco/mx53loco.c
index ea4d35431..e6345e7e5 100644
--- a/board/freescale/mx53loco/mx53loco.c
+++ b/board/freescale/mx53loco/mx53loco.c
@@ -147,19 +147,20 @@ struct fsl_esdhc_cfg esdhc_cfg[2] = {
{MMC_SDHC3_BASE_ADDR, 1},
};
-int board_mmc_getcd(u8 *cd, struct mmc *mmc)
+int board_mmc_getcd(struct mmc *mmc)
{
struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
+ int ret;
mxc_request_iomux(MX53_PIN_EIM_DA11, IOMUX_CONFIG_ALT1);
mxc_request_iomux(MX53_PIN_EIM_DA13, IOMUX_CONFIG_ALT1);
if (cfg->esdhc_base == MMC_SDHC1_BASE_ADDR)
- *cd = gpio_get_value(77); /*GPIO3_13*/
+ ret = !gpio_get_value(77); /* GPIO3_13 */
else
- *cd = gpio_get_value(75); /*GPIO3_11*/
+ ret = !gpio_get_value(75); /* GPIO3_11 */
- return 0;
+ return ret;
}
int board_mmc_init(bd_t *bis)