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gpio: max732x: Drop unused support for irq and setup code via platform data

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The only user of max732x_platform_data is arch/arm/mach-pxa/littleton.c
and it only uses .gpio_base. So drop the other members from the data struct
and simplify the driver accordingly.

The motivating side effect of this change is that the .remove() callback
cannot return a nonzero error code any more which prepares making i2c
remove callbacks return void.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
This commit is contained in:
Uwe Kleine-König 2022-05-02 19:08:27 +02:00 committed by Bartosz Golaszewski
parent 30a35c07d9
commit 6d5f220744
2 changed files with 2 additions and 47 deletions
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37
drivers/gpio/gpio-max732x.c
View File

@ -496,17 +496,13 @@ static int max732x_irq_setup(struct max732x_chip *chip,
const struct i2c_device_id *id)
{
struct i2c_client *client = chip->client;
struct max732x_platform_data *pdata = dev_get_platdata(&client->dev);
int has_irq = max732x_features[id->driver_data] >> 32;
int irq_base = 0;
int ret;
if (((pdata && pdata->irq_base) || client->irq)
&& has_irq != INT_NONE) {
if (client->irq && has_irq != INT_NONE) {
struct gpio_irq_chip *girq;
if (pdata)
irq_base = pdata->irq_base;
chip->irq_features = has_irq;
mutex_init(&chip->irq_lock);
@ -540,10 +536,9 @@ static int max732x_irq_setup(struct max732x_chip *chip,
const struct i2c_device_id *id)
{
struct i2c_client *client = chip->client;
struct max732x_platform_data *pdata = dev_get_platdata(&client->dev);
int has_irq = max732x_features[id->driver_data] >> 32;
if (((pdata && pdata->irq_base) || client->irq) && has_irq != INT_NONE)
if (client->irq && has_irq != INT_NONE)
dev_warn(&client->dev, "interrupt support not compiled in\n");
return 0;
@ -703,44 +698,16 @@ static int max732x_probe(struct i2c_client *client,
if (ret)
return ret;
if (pdata->setup) {
ret = pdata->setup(client, chip->gpio_chip.base,
chip->gpio_chip.ngpio, pdata->context);
if (ret < 0)
dev_warn(&client->dev, "setup failed, %d\n", ret);
}
i2c_set_clientdata(client, chip);
return 0;
}
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);
if (pdata && pdata->teardown) {
int ret;
ret = pdata->teardown(client, chip->gpio_chip.base,
chip->gpio_chip.ngpio, pdata->context);
if (ret < 0) {
dev_err(&client->dev, "%s failed, %d\n",
"teardown", ret);
return ret;
}
}
return 0;
}
static struct i2c_driver max732x_driver = {
.driver = {
.name = "max732x",
.of_match_table = of_match_ptr(max732x_of_table),
},
.probe = max732x_probe,
.remove = max732x_remove,
.id_table = max732x_id,
};

12
include/linux/platform_data/max732x.h
View File

@ -7,17 +7,5 @@
struct max732x_platform_data {
/* number of the first GPIO */
unsigned gpio_base;
/* interrupt base */
int irq_base;
void *context; /* param to setup/teardown */
int (*setup)(struct i2c_client *client,
unsigned gpio, unsigned ngpio,
void *context);
int (*teardown)(struct i2c_client *client,
unsigned gpio, unsigned ngpio,
void *context);
};
#endif /* __LINUX_I2C_MAX732X_H */