luck/tmp_suning_uos_patched
1
0
Fork 1
Code Issues Pull Requests Packages Projects Releases Wiki Activity

gpio: pca953x: store driver_data for future use

Browse Source 
Instead of using id->driver_data directly we copied it to the internal
structure. This will help to adapt driver for ACPI use.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Andy Shevchenko 2015-10-01 14:20:27 +03:00 committed by Linus Walleij
parent 8d2402605b
commit c6664149af
1 changed files with 10 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/gpio/gpio-pca953x.c
View File

@ -42,6 +42,9 @@
#define PCA_INT 0x0100
#define PCA953X_TYPE 0x1000
#define PCA957X_TYPE 0x2000
#define PCA_TYPE_MASK 0xF000
#define PCA_CHIP_TYPE(x) ((x) & PCA_TYPE_MASK)
static const struct i2c_device_id pca953x_id[] = {
{ "pca9505", 40 | PCA953X_TYPE | PCA_INT, },
@ -96,6 +99,7 @@ struct pca953x_chip {
struct gpio_chip gpio_chip;
const char *const *names;
int chip_type;
unsigned long driver_data;
};
static inline struct pca953x_chip *to_pca(struct gpio_chip *gc)
@ -518,14 +522,13 @@ static irqreturn_t pca953x_irq_handler(int irq, void *devid)
}
static int pca953x_irq_setup(struct pca953x_chip *chip,
const struct i2c_device_id *id,
int irq_base)
{
struct i2c_client *client = chip->client;
int ret, i, offset = 0;
if (client->irq && irq_base != -1
&& (id->driver_data & PCA_INT)) {
&& (chip->driver_data & PCA_INT)) {
switch (chip->chip_type) {
case PCA953X_TYPE:
@ -582,12 +585,11 @@ static int pca953x_irq_setup(struct pca953x_chip *chip,
#else /* CONFIG_GPIO_PCA953X_IRQ */
static int pca953x_irq_setup(struct pca953x_chip *chip,
const struct i2c_device_id *id,
int irq_base)
{
struct i2c_client *client = chip->client;
if (irq_base != -1 && (id->driver_data & PCA_INT))
if (irq_base != -1 && (chip->driver_data & PCA_INT))
dev_warn(&client->dev, "interrupt support not compiled in\n");
return 0;
@ -678,14 +680,15 @@ static int pca953x_probe(struct i2c_client *client,
chip->client = client;
chip->chip_type = id->driver_data & (PCA953X_TYPE | PCA957X_TYPE);
chip->driver_data = id->driver_data;
chip->chip_type = PCA_CHIP_TYPE(chip->driver_data);
mutex_init(&chip->i2c_lock);
/* initialize cached registers from their original values.
* we can't share this chip with another i2c master.
*/
pca953x_setup_gpio(chip, id->driver_data & PCA_GPIO_MASK);
pca953x_setup_gpio(chip, chip->driver_data & PCA_GPIO_MASK);
if (chip->chip_type == PCA953X_TYPE)
ret = device_pca953x_init(chip, invert);
@ -698,7 +701,7 @@ static int pca953x_probe(struct i2c_client *client,
if (ret)
return ret;
ret = pca953x_irq_setup(chip, id, irq_base);
ret = pca953x_irq_setup(chip, irq_base);
if (ret)
return ret;