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pca953x: support GPIOLIB GPIO naming 

Add support to the PCA953x driver to use the GPIOLIB naming facility for
GPIOs.

Signed-off-by: Daniel Silverstone <dsilvers@simtec.co.uk>
Cc: Ben Gardner <bgardner@wabtec.com>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Daniel Silverstone 2009-06-17 16:26:15 -07:00 committed by Linus Torvalds
parent 7bfa58dd4a
commit 77906a5461
2 changed files with 5 additions and 0 deletions
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4
drivers/gpio/pca953x.c
View File

@ -50,6 +50,7 @@ struct pca953x_chip {
struct i2c_client *client;
struct gpio_chip gpio_chip;
char **names;
};
static int pca953x_write_reg(struct pca953x_chip *chip, int reg, uint16_t val)
@ -192,6 +193,7 @@ static void pca953x_setup_gpio(struct pca953x_chip *chip, int gpios)
gc->label = chip->client->name;
gc->dev = &chip->client->dev;
gc->owner = THIS_MODULE;
gc->names = chip->names;
}
static int __devinit pca953x_probe(struct i2c_client *client,
@ -215,6 +217,8 @@ static int __devinit pca953x_probe(struct i2c_client *client,
chip->gpio_start = pdata->gpio_base;
chip->names = pdata->names;
/* initialize cached registers from their original values.
* we can't share this chip with another i2c master.
*/

1
include/linux/i2c/pca953x.h
View File

@ -15,4 +15,5 @@ struct pca953x_platform_data {
int (*teardown)(struct i2c_client *client,
unsigned gpio, unsigned ngpio,
void *context);
char **names;
};