return ret ? ret : -ENOENT;
}
-int gpio_lookup_name(const char *name, struct udevice **devp,
- unsigned int *offsetp, unsigned int *gpiop)
+int dm_gpio_lookup_name(const char *name, struct gpio_desc *desc)
{
struct gpio_dev_priv *uc_priv = NULL;
struct udevice *dev;
int numeric;
int ret;
- if (devp)
- *devp = NULL;
numeric = isdigit(*name) ? simple_strtoul(name, NULL, 10) : -1;
for (ret = uclass_first_device(UCLASS_GPIO, &dev);
dev;
if (!dev)
return ret ? ret : -EINVAL;
+ desc->dev = dev;
+ desc->offset = offset;
+
+ return 0;
+}
+
+int gpio_lookup_name(const char *name, struct udevice **devp,
+ unsigned int *offsetp, unsigned int *gpiop)
+{
+ struct gpio_desc desc;
+ int ret;
+
if (devp)
- *devp = dev;
+ *devp = NULL;
+ ret = dm_gpio_lookup_name(name, &desc);
+ if (ret)
+ return ret;
+
+ if (devp)
+ *devp = desc.dev;
if (offsetp)
- *offsetp = offset;
- if (gpiop)
- *gpiop = uc_priv->gpio_base + offset;
+ *offsetp = desc.offset;
+ if (gpiop) {
+ struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(desc.dev);
+
+ *gpiop = uc_priv->gpio_base + desc.offset;
+ }
return 0;
}
return ops->xlate ? ops->xlate(desc->dev, desc, args) : 0;
}
-static int dm_gpio_request(struct gpio_desc *desc, const char *label)
+int dm_gpio_request(struct gpio_desc *desc, const char *label)
{
struct udevice *dev = desc->dev;
struct gpio_dev_priv *uc_priv;
static int check_reserved(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,
return 0;
}
+int gpio_claim_vector(const int *gpio_num_array, const char *fmt)
+{
+ int i, ret;
+ int gpio;
+
+ for (i = 0; i < 32; i++) {
+ gpio = gpio_num_array[i];
+ if (gpio == -1)
+ break;
+ ret = gpio_requestf(gpio, fmt, i);
+ if (ret)
+ goto err;
+ ret = gpio_direction_input(gpio);
+ if (ret) {
+ gpio_free(gpio);
+ goto err;
+ }
+ }
+
+ return 0;
+err:
+ for (i--; i >= 0; i--)
+ gpio_free(gpio_num_array[i]);
+
+ return ret;
+}
+
/*
* get a number comprised of multiple GPIO values. gpio_num_array points to
* the array of gpio pin numbers to scan, terminated by -1.
*/
-unsigned gpio_get_values_as_int(const int *gpio_num_array)
+int gpio_get_values_as_int(const int *gpio_list)
{
int gpio;
unsigned bitmask = 1;
unsigned vector = 0;
+ int ret;
while (bitmask &&
- ((gpio = *gpio_num_array++) != -1)) {
- if (gpio_get_value(gpio))
+ ((gpio = *gpio_list++) != -1)) {
+ ret = gpio_get_value(gpio);
+ if (ret < 0)
+ return ret;
+ else if (ret)
vector |= bitmask;
bitmask <<= 1;
}
+
return vector;
}
UCLASS_DRIVER(gpio) = {
.id = UCLASS_GPIO,
.name = "gpio",
+ .flags = DM_UC_FLAG_SEQ_ALIAS,
.post_probe = gpio_post_probe,
.pre_remove = gpio_pre_remove,
.per_device_auto_alloc_size = sizeof(struct gpio_dev_priv),