X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fgpio%2Fgpio-uclass.c;h=4559739d619c637d79495e349290b7ae93646de9;hb=ca75159d8abc085b39e3e468ca34ccb2940d2bf5;hp=4efda311a49e81c8470a23d88f62a09b07f0f5bc;hpb=7a1af7a79bd79ded6a78d0c1afdbc3353669e313;p=u-boot

diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c
index 4efda311a4..4559739d61 100644
--- a/drivers/gpio/gpio-uclass.c
+++ b/drivers/gpio/gpio-uclass.c
@@ -6,10 +6,12 @@
 
 #include <common.h>
 #include <dm.h>
+#include <dt-bindings/gpio/gpio.h>
 #include <errno.h>
 #include <fdtdec.h>
 #include <malloc.h>
 #include <asm/gpio.h>
+#include <linux/bug.h>
 #include <linux/ctype.h>
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -112,19 +114,33 @@ int gpio_lookup_name(const char *name, struct udevice **devp,
 	return 0;
 }
 
+int gpio_xlate_offs_flags(struct udevice *dev,
+					 struct gpio_desc *desc,
+					 struct fdtdec_phandle_args *args)
+{
+	if (args->args_count < 1)
+		return -EINVAL;
+
+	desc->offset = args->args[0];
+
+	if (args->args_count < 2)
+		return 0;
+
+	if (args->args[1] & GPIO_ACTIVE_LOW)
+		desc->flags = GPIOD_ACTIVE_LOW;
+
+	return 0;
+}
+
 static int gpio_find_and_xlate(struct gpio_desc *desc,
 			       struct fdtdec_phandle_args *args)
 {
 	struct dm_gpio_ops *ops = gpio_get_ops(desc->dev);
 
-	/* Use the first argument as the offset by default */
-	if (args->args_count > 0)
-		desc->offset = args->args[0];
+	if (ops->xlate)
+		return ops->xlate(desc->dev, desc, args);
 	else
-		desc->offset = -1;
-	desc->flags = 0;
-
-	return ops->xlate ? ops->xlate(desc->dev, desc, args) : 0;
+		return gpio_xlate_offs_flags(desc->dev, desc, args);
 }
 
 int dm_gpio_request(struct gpio_desc *desc, const char *label)
@@ -154,6 +170,7 @@ int dm_gpio_request(struct gpio_desc *desc, const char *label)
 
 static int dm_gpio_requestf(struct gpio_desc *desc, const char *fmt, ...)
 {
+#if !defined(CONFIG_SPL_BUILD) || !defined(CONFIG_USE_TINY_PRINTF)
 	va_list args;
 	char buf[40];
 
@@ -161,6 +178,9 @@ static int dm_gpio_requestf(struct gpio_desc *desc, const char *fmt, ...)
 	vscnprintf(buf, sizeof(buf), fmt, args);
 	va_end(args);
 	return dm_gpio_request(desc, buf);
+#else
+	return dm_gpio_request(desc, fmt);
+#endif
 }
 
 /**
@@ -199,6 +219,7 @@ int gpio_request(unsigned gpio, const char *label)
  */
 int gpio_requestf(unsigned gpio, const char *fmt, ...)
 {
+#if !defined(CONFIG_SPL_BUILD) || !defined(CONFIG_USE_TINY_PRINTF)
 	va_list args;
 	char buf[40];
 
@@ -206,6 +227,9 @@ int gpio_requestf(unsigned gpio, const char *fmt, ...)
 	vscnprintf(buf, sizeof(buf), fmt, args);
 	va_end(args);
 	return gpio_request(gpio, buf);
+#else
+	return gpio_request(gpio, fmt);
+#endif
 }
 
 int _dm_gpio_free(struct udevice *dev, uint offset)
@@ -248,10 +272,14 @@ int gpio_free(unsigned gpio)
 	return _dm_gpio_free(desc.dev, desc.offset);
 }
 
-static int check_reserved(struct gpio_desc *desc, const char *func)
+static int check_reserved(const struct gpio_desc *desc, const char *func)
 {
-	struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(desc->dev);
+	struct gpio_dev_priv *uc_priv;
+
+	if (!dm_gpio_is_valid(desc))
+		return -ENOENT;
 
+	uc_priv = dev_get_uclass_priv(desc->dev);
 	if (!uc_priv->name[desc->offset]) {
 		printf("%s: %s: error: gpio %s%d not reserved\n",
 		       desc->dev->name, func,
@@ -311,7 +339,7 @@ int gpio_direction_output(unsigned gpio, int value)
 							desc.offset, value);
 }
 
-int dm_gpio_get_value(struct gpio_desc *desc)
+int dm_gpio_get_value(const struct gpio_desc *desc)
 {
 	int value;
 	int ret;
@@ -325,7 +353,7 @@ int dm_gpio_get_value(struct gpio_desc *desc)
 	return desc->flags & GPIOD_ACTIVE_LOW ? !value : value;
 }
 
-int dm_gpio_set_value(struct gpio_desc *desc, int value)
+int dm_gpio_set_value(const struct gpio_desc *desc, int value)
 {
 	int ret;
 
@@ -339,6 +367,38 @@ int dm_gpio_set_value(struct gpio_desc *desc, int value)
 	return 0;
 }
 
+int dm_gpio_get_open_drain(struct gpio_desc *desc)
+{
+	struct dm_gpio_ops *ops = gpio_get_ops(desc->dev);
+	int ret;
+
+	ret = check_reserved(desc, "get_open_drain");
+	if (ret)
+		return ret;
+
+	if (ops->set_open_drain)
+		return ops->get_open_drain(desc->dev, desc->offset);
+	else
+		return -ENOSYS;
+}
+
+int dm_gpio_set_open_drain(struct gpio_desc *desc, int value)
+{
+	struct dm_gpio_ops *ops = gpio_get_ops(desc->dev);
+	int ret;
+
+	ret = check_reserved(desc, "set_open_drain");
+	if (ret)
+		return ret;
+
+	if (ops->set_open_drain)
+		ret = ops->set_open_drain(desc->dev, desc->offset, value);
+	else
+		return 0; /* feature not supported -> ignore setting */
+
+	return ret;
+}
+
 int dm_gpio_set_dir_flags(struct gpio_desc *desc, ulong flags)
 {
 	struct udevice *dev = desc->dev;
@@ -564,6 +624,24 @@ int gpio_get_values_as_int(const int *gpio_list)
 	return vector;
 }
 
+int dm_gpio_get_values_as_int(const struct gpio_desc *desc_list, int count)
+{
+	unsigned bitmask = 1;
+	unsigned vector = 0;
+	int ret, i;
+
+	for (i = 0; i < count; i++) {
+		ret = dm_gpio_get_value(&desc_list[i]);
+		if (ret < 0)
+			return ret;
+		else if (ret)
+			vector |= bitmask;
+		bitmask <<= 1;
+	}
+
+	return vector;
+}
+
 static int _gpio_request_by_name_nodev(const void *blob, int node,
 				       const char *list_name, int index,
 				       struct gpio_desc *desc, int flags,
@@ -574,6 +652,7 @@ static int _gpio_request_by_name_nodev(const void *blob, int node,
 
 	desc->dev = NULL;
 	desc->offset = 0;
+	desc->flags = 0;
 	ret = fdtdec_parse_phandle_with_args(blob, node, list_name,
 					     "#gpio-cells", 0, index, &args);
 	if (ret) {
@@ -735,7 +814,7 @@ static int gpio_renumber(struct udevice *removed_dev)
 	return 0;
 }
 
-int gpio_get_number(struct gpio_desc *desc)
+int gpio_get_number(const struct gpio_desc *desc)
 {
 	struct udevice *dev = desc->dev;
 	struct gpio_dev_priv *uc_priv;