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

[Otavio Salvador]

Add board_mmc_getwp() for reading the ESDHC write-protect pin.

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

Changes in v2: None

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

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;
-- 
2.4.5