[U-Boot] [PATCH V2 4/4] imx: mx6: implement board_mmc_get_env_devno

[Peng Fan]

Implement board_mmc_get_env_devno for the boards.

Following is examples:
SD1/SD2/SD3: return devno;
SD2/SD3: return devno - 1;
SD2/SD4: if (devno == 2), return dev - 2; return dev - 1;

Signed-off-by: Peng Fan <peng.fan at nxp.com>
Cc: Stefano Babic <sbabic at denx.de>
---

Changes V2:
 implement board_mmc_get_env_devno in different board files.

 board/freescale/mx6qarm2/mx6qarm2.c         | 5 +++++
 board/freescale/mx6sabresd/mx6sabresd.c     | 5 +++++
 board/freescale/mx6slevk/mx6slevk.c         | 5 +++++
 board/freescale/mx6sxsabresd/mx6sxsabresd.c | 5 +++++
 4 files changed, 20 insertions(+)

diff --git a/board/freescale/mx6qarm2/mx6qarm2.c b/board/freescale/mx6qarm2/mx6qarm2.c
index 98ccdb7..aa87ba9 100644
--- a/board/freescale/mx6qarm2/mx6qarm2.c
+++ b/board/freescale/mx6qarm2/mx6qarm2.c
@@ -110,6 +110,11 @@ struct fsl_esdhc_cfg usdhc_cfg[2] = {
 	{USDHC4_BASE_ADDR},
 };
 
+int board_mmc_get_env_devno(int devno)
+{
+	return devno - 2;
+}
+
 int board_mmc_getcd(struct mmc *mmc)
 {
 	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
diff --git a/board/freescale/mx6sabresd/mx6sabresd.c b/board/freescale/mx6sabresd/mx6sabresd.c
index 581c9d5..6128462 100644
--- a/board/freescale/mx6sabresd/mx6sabresd.c
+++ b/board/freescale/mx6sabresd/mx6sabresd.c
@@ -234,6 +234,11 @@ struct fsl_esdhc_cfg usdhc_cfg[3] = {
 #define USDHC2_CD_GPIO	IMX_GPIO_NR(2, 2)
 #define USDHC3_CD_GPIO	IMX_GPIO_NR(2, 0)
 
+int board_mmc_get_env_devno(int devno)
+{
+	return devno - 1;
+}
+
 int board_mmc_getcd(struct mmc *mmc)
 {
 	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c
index 5eab4b5..84573f5 100644
--- a/board/freescale/mx6slevk/mx6slevk.c
+++ b/board/freescale/mx6slevk/mx6slevk.c
@@ -170,6 +170,11 @@ static struct fsl_esdhc_cfg usdhc_cfg[3] = {
 	{USDHC3_BASE_ADDR, 0, 4},
 };
 
+int board_mmc_get_env_devno(int devno)
+{
+	return devno;
+}
+
 int board_mmc_getcd(struct mmc *mmc)
 {
 	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
diff --git a/board/freescale/mx6sxsabresd/mx6sxsabresd.c b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
index 3ee4662..78f0151 100644
--- a/board/freescale/mx6sxsabresd/mx6sxsabresd.c
+++ b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
@@ -309,6 +309,11 @@ static struct fsl_esdhc_cfg usdhc_cfg[3] = {
 #define USDHC3_PWR_GPIO	IMX_GPIO_NR(2, 11)
 #define USDHC4_CD_GPIO	IMX_GPIO_NR(6, 21)
 
+int board_mmc_get_env_devno(int devno)
+{
+	return devno - 1;
+}
+
 int board_mmc_getcd(struct mmc *mmc)
 {
 	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
-- 
2.6.2