#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;
for (ret = uclass_first_device(UCLASS_GPIO, &dev);
dev;
ret = uclass_next_device(&dev)) {
- uc_priv = dev->uclass_priv;
+ uc_priv = dev_get_uclass_priv(dev);
if (gpio >= uc_priv->gpio_base &&
gpio < uc_priv->gpio_base + uc_priv->gpio_count) {
desc->dev = dev;
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;
ret = uclass_next_device(&dev)) {
int len;
- uc_priv = dev->uclass_priv;
+ uc_priv = dev_get_uclass_priv(dev);
if (numeric != -1) {
offset = numeric - uc_priv->gpio_base;
/* Allow GPIOs to be numbered from 0 */
- if (offset >= 0 && offset < uc_priv->gpio_count)
+ if (offset < uc_priv->gpio_count)
break;
}
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;
+}
+
+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;
}
{
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);
}
-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;
char *str;
int ret;
- uc_priv = dev->uclass_priv;
+ uc_priv = dev_get_uclass_priv(dev);
if (uc_priv->name[desc->offset])
return -EBUSY;
str = strdup(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];
vscnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
return dm_gpio_request(desc, buf);
+#else
+ return dm_gpio_request(desc, fmt);
+#endif
}
/**
*/
int gpio_requestf(unsigned gpio, const char *fmt, ...)
{
+#if !defined(CONFIG_SPL_BUILD) || !defined(CONFIG_USE_TINY_PRINTF)
va_list args;
char buf[40];
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)
struct gpio_dev_priv *uc_priv;
int ret;
- uc_priv = dev->uclass_priv;
+ uc_priv = dev_get_uclass_priv(dev);
if (!uc_priv->name[offset])
return -ENXIO;
if (gpio_get_ops(dev)->free) {
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 = desc->dev->uclass_priv;
+ 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,
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;
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;
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;
struct gpio_dev_priv *priv;
/* Must be called on an active device */
- priv = dev->uclass_priv;
+ priv = dev_get_uclass_priv(dev);
assert(priv);
*bit_count = priv->gpio_count;
int get_function(struct udevice *dev, int offset, bool skip_unused,
const char **namep)
{
- struct gpio_dev_priv *uc_priv = dev->uclass_priv;
+ struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
struct dm_gpio_ops *ops = gpio_get_ops(dev);
BUILD_BUG_ON(GPIOF_COUNT != ARRAY_SIZE(gpio_function));
BUILD_BUG_ON(GPIOF_COUNT != ARRAY_SIZE(gpio_function));
*buf = 0;
- priv = dev->uclass_priv;
+ priv = dev_get_uclass_priv(dev);
ret = gpio_get_raw_function(dev, offset, NULL);
if (ret < 0)
return ret;
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;
+}
+
+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;
}
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) {
* calls in gpio_request_by_name(), but we can do this until
* gpio_request_by_name_nodev() can be dropped.
*/
- return gpio_request_by_name_nodev(gd->fdt_blob, dev->of_offset,
+ return gpio_request_by_name_nodev(gd->fdt_blob, dev_of_offset(dev),
list_name, index, desc, flags);
}
int count;
int ret;
- for (count = 0; ; count++) {
- if (count >= max_count) {
- ret = -ENOSPC;
- goto err;
- }
+ for (count = 0; count < max_count; count++) {
ret = _gpio_request_by_name_nodev(blob, node, list_name, count,
&desc[count], flags, true);
if (ret == -ENOENT)
* calls in gpio_request_by_name(), but we can do this until
* gpio_request_list_by_name_nodev() can be dropped.
*/
- return gpio_request_list_by_name_nodev(gd->fdt_blob, dev->of_offset,
+ return gpio_request_list_by_name_nodev(gd->fdt_blob, dev_of_offset(dev),
list_name, desc, max_count,
flags);
}
{
int ret;
- ret = fdtdec_parse_phandle_with_args(gd->fdt_blob, dev->of_offset,
+ ret = fdtdec_parse_phandle_with_args(gd->fdt_blob, dev_of_offset(dev),
list_name, "#gpio-cells", 0, -1,
NULL);
if (ret) {
base = 0;
uclass_foreach_dev(dev, uc) {
if (device_active(dev) && dev != removed_dev) {
- uc_priv = dev->uclass_priv;
+ uc_priv = dev_get_uclass_priv(dev);
uc_priv->gpio_base = base;
base += uc_priv->gpio_count;
}
return 0;
}
+int gpio_get_number(const struct gpio_desc *desc)
+{
+ struct udevice *dev = desc->dev;
+ struct gpio_dev_priv *uc_priv;
+
+ if (!dev)
+ return -1;
+ uc_priv = dev->uclass_priv;
+
+ return uc_priv->gpio_base + desc->offset;
+}
+
static int gpio_post_probe(struct udevice *dev)
{
- struct gpio_dev_priv *uc_priv = dev->uclass_priv;
+ struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
uc_priv->name = calloc(uc_priv->gpio_count, sizeof(char *));
if (!uc_priv->name)
static int gpio_pre_remove(struct udevice *dev)
{
- struct gpio_dev_priv *uc_priv = dev->uclass_priv;
+ struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
int i;
for (i = 0; i < uc_priv->gpio_count; i++) {
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),
projects / u-boot / blobdiff