static int pca953x_probe(struct udevice *dev)
{
struct pca953x_info *info = dev_get_platdata(dev);
struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
struct dm_i2c_chip *chip = dev_get_parent_platdata(dev);
char name[32], *str;
int addr;
ulong driver_data;
int ret;
if (!info) {
dev_err(dev, "platdata not ready\n");
return -ENOMEM;
}
if (!chip) {
dev_err(dev, "i2c not ready\n");
return -ENODEV;
}
addr = fdtdec_get_int(gd->fdt_blob, dev->of_offset, "reg", 0);
if (addr == 0)
return -ENODEV;
info->addr = addr;
driver_data = dev_get_driver_data(dev);
info->gpio_count = driver_data & PCA_GPIO_MASK;
if (info->gpio_count > MAX_BANK * BANK_SZ) {
dev_err(dev, "Max support %d pins now\n", MAX_BANK * BANK_SZ);
return -EINVAL;
}
info->chip_type = PCA_CHIP_TYPE(driver_data);
if (info->chip_type != PCA953X_TYPE) {
dev_err(dev, "Only support PCA953X chip type now.\n");
return -EINVAL;
}
info->bank_count = DIV_ROUND_UP(info->gpio_count, BANK_SZ);
ret = pca953x_read_regs(dev, PCA953X_OUTPUT, info->reg_output);
if (ret) {
dev_err(dev, "Error reading output register\n");
return ret;
}
ret = pca953x_read_regs(dev, PCA953X_DIRECTION, info->reg_direction);
if (ret) {
dev_err(dev, "Error reading direction register\n");
return ret;
}
snprintf(name, sizeof(name), "gpio@%x_", info->addr);
str = strdup(name);
if (!str)
return -ENOMEM;
uc_priv->bank_name = str;
uc_priv->gpio_count = info->gpio_count;
dev_dbg(dev, "%s is ready\n", str);
return 0;
}
static int pca953x_probe(struct udevice *dev)
{
struct pca953x_info *info = dev_get_platdata(dev);
struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
char name[32], label[8], *str;
int addr;
ulong driver_data;
int ret;
int size;
const u8 *tmp;
addr = dev_read_addr(dev);
if (addr == 0)
return -ENODEV;
info->addr = addr;
driver_data = dev_get_driver_data(dev);
info->gpio_count = driver_data & PCA_GPIO_MASK;
if (info->gpio_count > MAX_BANK * BANK_SZ) {
dev_err(dev, "Max support %d pins now\n", MAX_BANK * BANK_SZ);
return -EINVAL;
}
info->chip_type = PCA_CHIP_TYPE(driver_data);
if (info->chip_type != PCA953X_TYPE) {
dev_err(dev, "Only support PCA953X chip type now.\n");
return -EINVAL;
}
info->bank_count = DIV_ROUND_UP(info->gpio_count, BANK_SZ);
ret = pca953x_read_regs(dev, PCA953X_OUTPUT, info->reg_output);
if (ret) {
dev_err(dev, "Error reading output register\n");
return ret;
}
ret = pca953x_read_regs(dev, PCA953X_DIRECTION, info->reg_direction);
if (ret) {
dev_err(dev, "Error reading direction register\n");
return ret;
}
tmp = dev_read_prop(dev, "label", &size);
if (tmp) {
memcpy(label, tmp, sizeof(label) - 1);
label[sizeof(label) - 1] = '\0';
snprintf(name, sizeof(name), "%s@%x_", label, info->addr);
} else {
snprintf(name, sizeof(name), "gpio@%x_", info->addr);
}
str = strdup(name);
if (!str)
return -ENOMEM;
uc_priv->bank_name = str;
uc_priv->gpio_count = info->gpio_count;
dev_dbg(dev, "%s is ready\n", str);
return 0;
}
