diff options
| author | Shubhrajyoti Datta <shubhrajyoti.datta@amd.com> | 2022-10-26 20:45:42 +0530 |
|---|---|---|
| committer | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2022-10-27 09:32:09 +0200 |
| commit | b8a34582c7f7f22f82852f9d3cc192e050f892fd (patch) | |
| tree | a2a38ee5e8f7cf4dbbd5bd4b63192c7af90da29b | |
| parent | f7ec74c14f24d78f054efd4ddbda0b4a174cf39f (diff) | |
| download | linux-b8a34582c7f7f22f82852f9d3cc192e050f892fd.tar.bz2 | |
gpio: pca9570: add a platform data structure
Add struct pca9570_platform_data for adding the platform data
structure. Also modify the existing structs for pca9570 and pca9571
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@amd.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
| -rw-r--r-- | drivers/gpio/gpio-pca9570.c | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/drivers/gpio/gpio-pca9570.c b/drivers/gpio/gpio-pca9570.c index ab2a652964ec..e8c2ddb1bcd8 100644 --- a/drivers/gpio/gpio-pca9570.c +++ b/drivers/gpio/gpio-pca9570.c @@ -16,13 +16,25 @@ #include <linux/property.h> /** + * struct pca9570_platform_data - GPIO platformdata + * @ngpio: no of gpios + * @command: Command to be sent + */ +struct pca9570_platform_data { + u16 ngpio; + u32 command; +}; + +/** * struct pca9570 - GPIO driver data * @chip: GPIO controller chip + * @p_data: GPIO controller platform data * @lock: Protects write sequences * @out: Buffer for device register */ struct pca9570 { struct gpio_chip chip; + const struct pca9570_platform_data *p_data; struct mutex lock; u8 out; }; @@ -106,7 +118,8 @@ static int pca9570_probe(struct i2c_client *client) gpio->chip.get = pca9570_get; gpio->chip.set = pca9570_set; gpio->chip.base = -1; - gpio->chip.ngpio = (uintptr_t)device_get_match_data(&client->dev); + gpio->p_data = device_get_match_data(&client->dev); + gpio->chip.ngpio = gpio->p_data->ngpio; gpio->chip.can_sleep = true; mutex_init(&gpio->lock); @@ -119,16 +132,24 @@ static int pca9570_probe(struct i2c_client *client) return devm_gpiochip_add_data(&client->dev, &gpio->chip, gpio); } +static const struct pca9570_platform_data pca9570_gpio = { + .ngpio = 4, +}; + +static const struct pca9570_platform_data pca9571_gpio = { + .ngpio = 8, +}; + static const struct i2c_device_id pca9570_id_table[] = { - { "pca9570", 4 }, - { "pca9571", 8 }, + { "pca9570", (kernel_ulong_t)&pca9570_gpio}, + { "pca9571", (kernel_ulong_t)&pca9571_gpio }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(i2c, pca9570_id_table); static const struct of_device_id pca9570_of_match_table[] = { - { .compatible = "nxp,pca9570", .data = (void *)4 }, - { .compatible = "nxp,pca9571", .data = (void *)8 }, + { .compatible = "nxp,pca9570", .data = &pca9570_gpio }, + { .compatible = "nxp,pca9571", .data = &pca9571_gpio }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, pca9570_of_match_table); |