diff options
| -rw-r--r-- | drivers/gpio/gpio-max732x.c | 62 |
1 files changed, 51 insertions, 11 deletions
diff --git a/drivers/gpio/gpio-max732x.c b/drivers/gpio/gpio-max732x.c index 6c676225b886..a642f780901d 100644 --- a/drivers/gpio/gpio-max732x.c +++ b/drivers/gpio/gpio-max732x.c @@ -21,6 +21,7 @@ #include <linux/irq.h> #include <linux/i2c.h> #include <linux/i2c/max732x.h> +#include <linux/of.h> /* @@ -116,6 +117,22 @@ static const struct i2c_device_id max732x_id[] = { }; MODULE_DEVICE_TABLE(i2c, max732x_id); +#ifdef CONFIG_OF +static const struct of_device_id max732x_of_table[] = { + { .compatible = "maxim,max7319" }, + { .compatible = "maxim,max7320" }, + { .compatible = "maxim,max7321" }, + { .compatible = "maxim,max7322" }, + { .compatible = "maxim,max7323" }, + { .compatible = "maxim,max7324" }, + { .compatible = "maxim,max7325" }, + { .compatible = "maxim,max7326" }, + { .compatible = "maxim,max7327" }, + { } +}; +MODULE_DEVICE_TABLE(of, max732x_of_table); +#endif + struct max732x_chip { struct gpio_chip gpio_chip; @@ -457,10 +474,12 @@ static int max732x_irq_setup(struct max732x_chip *chip, int has_irq = max732x_features[id->driver_data] >> 32; int ret; - if (pdata->irq_base && has_irq != INT_NONE) { + if (((pdata && pdata->irq_base) || client->irq) + && has_irq != INT_NONE) { int lvl; - chip->irq_base = pdata->irq_base; + if (pdata) + chip->irq_base = pdata->irq_base; chip->irq_features = has_irq; mutex_init(&chip->irq_lock); @@ -515,7 +534,7 @@ static int max732x_irq_setup(struct max732x_chip *chip, struct max732x_platform_data *pdata = dev_get_platdata(&client->dev); int has_irq = max732x_features[id->driver_data] >> 32; - if (pdata->irq_base && has_irq != INT_NONE) + if (((pdata && pdata->irq_base) || client->irq) && has_irq != INT_NONE) dev_warn(&client->dev, "interrupt support not compiled in\n"); return 0; @@ -574,28 +593,47 @@ static int max732x_setup_gpio(struct max732x_chip *chip, return port; } +static struct max732x_platform_data *of_gpio_max732x(struct device *dev) +{ + struct max732x_platform_data *pdata; + + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return NULL; + + pdata->gpio_base = -1; + + return pdata; +} + static int max732x_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct max732x_platform_data *pdata; + struct device_node *node; struct max732x_chip *chip; struct i2c_client *c; uint16_t addr_a, addr_b; int ret, nr_port; pdata = dev_get_platdata(&client->dev); - if (pdata == NULL) { + node = client->dev.of_node; + + if (!pdata && node) + pdata = of_gpio_max732x(&client->dev); + + if (!pdata) { dev_dbg(&client->dev, "no platform data\n"); return -EINVAL; } - chip = devm_kzalloc(&client->dev, sizeof(struct max732x_chip), - GFP_KERNEL); + chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL); if (chip == NULL) return -ENOMEM; chip->client = client; nr_port = max732x_setup_gpio(chip, id, pdata->gpio_base); + chip->gpio_chip.dev = &client->dev; addr_a = (client->addr & 0x0f) | 0x60; addr_b = (client->addr & 0x0f) | 0x50; @@ -643,7 +681,7 @@ static int max732x_probe(struct i2c_client *client, if (ret) goto out_failed; - if (pdata->setup) { + if (pdata && pdata->setup) { ret = pdata->setup(client, chip->gpio_chip.base, chip->gpio_chip.ngpio, pdata->context); if (ret < 0) @@ -664,9 +702,10 @@ static int max732x_remove(struct i2c_client *client) { struct max732x_platform_data *pdata = dev_get_platdata(&client->dev); struct max732x_chip *chip = i2c_get_clientdata(client); - int ret; - if (pdata->teardown) { + if (pdata && pdata->teardown) { + int ret; + ret = pdata->teardown(client, chip->gpio_chip.base, chip->gpio_chip.ngpio, pdata->context); if (ret < 0) { @@ -689,8 +728,9 @@ static int max732x_remove(struct i2c_client *client) static struct i2c_driver max732x_driver = { .driver = { - .name = "max732x", - .owner = THIS_MODULE, + .name = "max732x", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(max732x_of_table), }, .probe = max732x_probe, .remove = max732x_remove, |