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authorChandrabhanu Mahapatra <cmahapatra@ti.com>2012-07-10 19:05:37 +0530
committerLinus Walleij <linus.walleij@linaro.org>2012-07-17 21:00:18 +0200
commit6a7b36aa4b0afbe7a9798feac16de47ad856f358 (patch)
treece7f451864f44cbd4d8896f7ca8d478f07b8d249
parent346720130aa49e1b711c0900e98fd12f4de972b0 (diff)
GPIO: PCA953X: Increase size of invert variable to support 24 bit
TCA6424 is a low voltage 24 bit I2C and SMBus I/O expander of pca953x family similar to its 16 bit predecessor TCA6416. It comes with three 8-bit active Input, Output, Polarity Inversion and Configuration registers each. The polarity of Input ports can be reversed by setting the appropiate bit in Polarity Inversion registers. The variables corresponding to Input, Output and Configuration registers have already been updated to support 24 bit values. This patch thus updates the invert variable of PCA953X platform data to support 24 bit. Signed-off-by: Chandrabhanu Mahapatra <cmahapatra@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
-rw-r--r--drivers/gpio/gpio-pca953x.c11
-rw-r--r--include/linux/i2c/pca953x.h2
2 files changed, 7 insertions, 6 deletions
diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index de24af202447..266b910de43b 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -568,7 +568,7 @@ static void pca953x_irq_teardown(struct pca953x_chip *chip)
* WARNING: This is DEPRECATED and will be removed eventually!
*/
static void
-pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, int *invert)
+pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, u32 *invert)
{
struct device_node *node;
const __be32 *val;
@@ -596,13 +596,13 @@ pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, int *invert)
}
#else
static void
-pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, int *invert)
+pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, u32 *invert)
{
*gpio_base = -1;
}
#endif
-static int __devinit device_pca953x_init(struct pca953x_chip *chip, int invert)
+static int __devinit device_pca953x_init(struct pca953x_chip *chip, u32 invert)
{
int ret;
@@ -621,7 +621,7 @@ out:
return ret;
}
-static int __devinit device_pca957x_init(struct pca953x_chip *chip, int invert)
+static int __devinit device_pca957x_init(struct pca953x_chip *chip, u32 invert)
{
int ret;
u32 val = 0;
@@ -657,8 +657,9 @@ static int __devinit pca953x_probe(struct i2c_client *client,
{
struct pca953x_platform_data *pdata;
struct pca953x_chip *chip;
- int irq_base=0, invert=0;
+ int irq_base = 0;
int ret;
+ u32 invert = 0;
chip = kzalloc(sizeof(struct pca953x_chip), GFP_KERNEL);
if (chip == NULL)
diff --git a/include/linux/i2c/pca953x.h b/include/linux/i2c/pca953x.h
index 139ba52667c8..3c98dd4f901f 100644
--- a/include/linux/i2c/pca953x.h
+++ b/include/linux/i2c/pca953x.h
@@ -11,7 +11,7 @@ struct pca953x_platform_data {
unsigned gpio_base;
/* initial polarity inversion setting */
- uint16_t invert;
+ u32 invert;
/* interrupt base */
int irq_base;