[U-Boot] [PATCH] axs10x/emdk/hsdk/iot_dk: Implement board_mmc_getcd()

[Alexey Brodkin]

So now we may detect MMC/SD-card existence and
instead of completely misleading message on missing card:
------------------------>8-----------------------
Loading Environment from FAT... Card did not respond to voltage select!
------------------------>8-----------------------

we now get very clear one:
------------------------>8-----------------------
Loading Environment from FAT... MMC: no card present
------------------------>8-----------------------

Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com>
---
 board/synopsys/axs10x/axs10x.c         | 7 +++++++
 board/synopsys/emdk/emdk.c             | 7 +++++++
 board/synopsys/hsdk/hsdk.c             | 7 +++++++
 board/synopsys/iot_devkit/iot_devkit.c | 7 +++++++
 4 files changed, 28 insertions(+)

diff --git a/board/synopsys/axs10x/axs10x.c b/board/synopsys/axs10x/axs10x.c
index af78127..c95f7af 100644
--- a/board/synopsys/axs10x/axs10x.c
+++ b/board/synopsys/axs10x/axs10x.c
@@ -33,6 +33,13 @@ int board_mmc_init(bd_t *bis)
 	return 0;
 }
 
+int board_mmc_getcd(struct mmc *mmc)
+{
+	struct dwmci_host *host = mmc->priv;
+
+	return !(dwmci_readl(host, DWMCI_CDETECT) & 1);
+}
+
 #define AXS_MB_CREG	0xE0011000
 
 int board_early_init_f(void)
diff --git a/board/synopsys/emdk/emdk.c b/board/synopsys/emdk/emdk.c
index bbb946a..79cafef 100644
--- a/board/synopsys/emdk/emdk.c
+++ b/board/synopsys/emdk/emdk.c
@@ -34,6 +34,13 @@ int board_mmc_init(bd_t *bis)
 	return 0;
 }
 
+int board_mmc_getcd(struct mmc *mmc)
+{
+	struct dwmci_host *host = mmc->priv;
+
+	return !(dwmci_readl(host, DWMCI_CDETECT) & 1);
+}
+
 #define CREG_BASE		0xF0001000
 #define CREG_BOOT_OFFSET	0
 #define CREG_BOOT_WP_OFFSET	8
diff --git a/board/synopsys/hsdk/hsdk.c b/board/synopsys/hsdk/hsdk.c
index 4f46d2e..b6aefdb 100644
--- a/board/synopsys/hsdk/hsdk.c
+++ b/board/synopsys/hsdk/hsdk.c
@@ -1019,6 +1019,13 @@ int board_late_init(void)
 	return 0;
 }
 
+int board_mmc_getcd(struct mmc *mmc)
+{
+	struct dwmci_host *host = mmc->priv;
+
+	return !(dwmci_readl(host, DWMCI_CDETECT) & 1);
+}
+
 int board_mmc_init(bd_t *bis)
 {
 	struct dwmci_host *host = NULL;
diff --git a/board/synopsys/iot_devkit/iot_devkit.c b/board/synopsys/iot_devkit/iot_devkit.c
index 40c29e7..f8838fb 100644
--- a/board/synopsys/iot_devkit/iot_devkit.c
+++ b/board/synopsys/iot_devkit/iot_devkit.c
@@ -170,6 +170,13 @@ int board_mmc_init(bd_t *bis)
 	return 0;
 }
 
+int board_mmc_getcd(struct mmc *mmc)
+{
+	struct dwmci_host *host = mmc->priv;
+
+	return !(dwmci_readl(host, DWMCI_CDETECT) & 1);
+}
+
 #define IOTDK_RESET_SEQ		0x55AA6699
 
 void reset_cpu(ulong addr)
-- 
2.7.4