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[U-Boot,v2,07/15] cgtqmx6eval: Add ESDHC write-protect support

Message ID 1436814070-9108-7-git-send-email-otavio@ossystems.com.br
State Changes Requested
Headers show

Commit Message

Otavio Salvador July 13, 2015, 7:01 p.m. UTC 
Add board_mmc_getwp() for reading the ESDHC write-protect pin.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
---

Changes in v2: None

 board/congatec/cgtqmx6eval/cgtqmx6eval.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
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Patch

diff --git a/board/congatec/cgtqmx6eval/cgtqmx6eval.c b/board/congatec/cgtqmx6eval/cgtqmx6eval.c
index e05060c..1ae126c 100644
--- a/board/congatec/cgtqmx6eval/cgtqmx6eval.c
+++ b/board/congatec/cgtqmx6eval/cgtqmx6eval.c
@@ -113,6 +113,25 @@  int board_mmc_getcd(struct mmc *mmc)
 	return ret;
 }
 
+int board_mmc_getwp(struct mmc *mmc)
+{
+	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
+	int ret = 0;
+
+	switch (cfg->esdhc_base) {
+	case USDHC2_BASE_ADDR:
+		return -1;	/* no write protection for onboard \B5SD */
+	case USDHC3_BASE_ADDR:
+		return -1;	/* no write protection for eMMC */
+	case USDHC4_BASE_ADDR:
+		gpio_direction_input(IMX_GPIO_NR(2, 7));
+		ret = gpio_get_value(IMX_GPIO_NR(2, 7));
+		break;
+	}
+
+	return ret;
+}
+
 int board_mmc_init(bd_t *bis)
 {
 	s32 status = 0;