[U-Boot] [PATCH] mmc: fsl_esdhc: Fix wp_enable issue

[Ye Li]

The wp-gpios property is used for gpio, if this is set, the WP pin is muxed
to gpio function, can't be used as internal WP checking. However the codes
remain to use internal WP checking.

This patch changes to examine the "fsl,wp-controller" for enabling internal WP
checking, and "wp-gpios" for muxing to gpio.

Signed-off-by: Ye Li <ye.li at nxp.com>
---
 drivers/mmc/fsl_esdhc.c | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c
index 87273c8..4e10f13 100644
--- a/drivers/mmc/fsl_esdhc.c
+++ b/drivers/mmc/fsl_esdhc.c
@@ -297,6 +297,13 @@ static int esdhc_setup_data(struct fsl_esdhc_priv *priv, struct mmc *mmc,
 				printf("\nThe SD card is locked. Can not write to a locked card.\n\n");
 				return -ETIMEDOUT;
 			}
+		} else {
+#ifdef CONFIG_DM_GPIO
+			if (dm_gpio_is_valid(&priv->wp_gpio) && dm_gpio_get_value(&priv->wp_gpio)) {
+				printf("\nThe SD card is locked. Can not write to a locked card.\n\n");
+				return -ETIMEDOUT;
+			}
+#endif
 		}
 
 		esdhc_clrsetbits32(&regs->wml, WML_WR_WML_MASK,
@@ -1455,14 +1462,15 @@ static int fsl_esdhc_probe(struct udevice *dev)
 #endif
 	}
 
-	priv->wp_enable = 1;
-
+	if (dev_read_prop(dev, "fsl,wp-controller", NULL)) {
+		priv->wp_enable = 1;
+	} else {
+		priv->wp_enable = 0;
 #ifdef CONFIG_DM_GPIO
-	ret = gpio_request_by_name(dev, "wp-gpios", 0, &priv->wp_gpio,
+		gpio_request_by_name(dev, "wp-gpios", 0, &priv->wp_gpio,
 				   GPIOD_IS_IN);
-	if (ret)
-		priv->wp_enable = 0;
 #endif
+	}
 
 	priv->vs18_enable = 0;
 
-- 
2.7.4