summaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpio/Kconfig11
-rw-r--r--drivers/gpio/Makefile2
-rw-r--r--drivers/gpio/pca953x.c110
3 files changed, 62 insertions, 61 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 74fac0f5c34..bbd28342e77 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -27,15 +27,16 @@ config DEBUG_GPIO
comment "I2C GPIO expanders:"
-config GPIO_PCA9539
- tristate "PCA9539 16-bit I/O port"
+config GPIO_PCA953X
+ tristate "PCA953x I/O ports"
depends on I2C
help
- Say yes here to support the PCA9539 16-bit I/O port. These
- parts are made by NXP and TI.
+ Say yes here to support the PCA9534 (8-bit), PCA9535 (16-bit),
+ PCA9536 (4-bit), PCA9537 (4-bit), PCA9538 (8-bit), and PCA9539
+ (16-bit) I/O ports. These parts are made by NXP and TI.
This driver can also be built as a module. If so, the module
- will be called pca9539.
+ will be called pca953x.
config GPIO_PCF857X
tristate "PCF857x, PCA857x, and PCA967x I2C GPIO expanders"
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 16dda772b44..fdde9923cf3 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -5,5 +5,5 @@ ccflags-$(CONFIG_DEBUG_GPIO) += -DDEBUG
obj-$(CONFIG_HAVE_GPIO_LIB) += gpiolib.o
obj-$(CONFIG_GPIO_MCP23S08) += mcp23s08.o
-obj-$(CONFIG_GPIO_PCA9539) += pca953x.o
+obj-$(CONFIG_GPIO_PCA953X) += pca953x.o
obj-$(CONFIG_GPIO_PCF857X) += pcf857x.o
diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c
index 7fae4e500df..ef1fe24bcba 100644
--- a/drivers/gpio/pca953x.c
+++ b/drivers/gpio/pca953x.c
@@ -1,5 +1,5 @@
/*
- * pca9539.c - 16-bit I/O port with interrupt and reset
+ * pca953x.c - 16-bit I/O port with interrupt and reset
*
* Copyright (C) 2005 Ben Gardner <bgardner@wabtec.com>
* Copyright (C) 2007 Marvell International Ltd.
@@ -19,14 +19,14 @@
#include <asm/gpio.h>
-#define NR_PCA9539_GPIOS 16
+#define NR_PCA953X_GPIOS 16
-#define PCA9539_INPUT 0
-#define PCA9539_OUTPUT 2
-#define PCA9539_INVERT 4
-#define PCA9539_DIRECTION 6
+#define PCA953X_INPUT 0
+#define PCA953X_OUTPUT 2
+#define PCA953X_INVERT 4
+#define PCA953X_DIRECTION 6
-struct pca9539_chip {
+struct pca953x_chip {
unsigned gpio_start;
uint16_t reg_output;
uint16_t reg_direction;
@@ -38,7 +38,7 @@ struct pca9539_chip {
/* NOTE: we can't currently rely on fault codes to come from SMBus
* calls, so we map all errors to EIO here and return zero otherwise.
*/
-static int pca9539_write_reg(struct pca9539_chip *chip, int reg, uint16_t val)
+static int pca953x_write_reg(struct pca953x_chip *chip, int reg, uint16_t val)
{
if (i2c_smbus_write_word_data(chip->client, reg, val) < 0)
return -EIO;
@@ -46,7 +46,7 @@ static int pca9539_write_reg(struct pca9539_chip *chip, int reg, uint16_t val)
return 0;
}
-static int pca9539_read_reg(struct pca9539_chip *chip, int reg, uint16_t *val)
+static int pca953x_read_reg(struct pca953x_chip *chip, int reg, uint16_t *val)
{
int ret;
@@ -60,16 +60,16 @@ static int pca9539_read_reg(struct pca9539_chip *chip, int reg, uint16_t *val)
return 0;
}
-static int pca9539_gpio_direction_input(struct gpio_chip *gc, unsigned off)
+static int pca953x_gpio_direction_input(struct gpio_chip *gc, unsigned off)
{
- struct pca9539_chip *chip;
+ struct pca953x_chip *chip;
uint16_t reg_val;
int ret;
- chip = container_of(gc, struct pca9539_chip, gpio_chip);
+ chip = container_of(gc, struct pca953x_chip, gpio_chip);
reg_val = chip->reg_direction | (1u << off);
- ret = pca9539_write_reg(chip, PCA9539_DIRECTION, reg_val);
+ ret = pca953x_write_reg(chip, PCA953X_DIRECTION, reg_val);
if (ret)
return ret;
@@ -77,14 +77,14 @@ static int pca9539_gpio_direction_input(struct gpio_chip *gc, unsigned off)
return 0;
}
-static int pca9539_gpio_direction_output(struct gpio_chip *gc,
+static int pca953x_gpio_direction_output(struct gpio_chip *gc,
unsigned off, int val)
{
- struct pca9539_chip *chip;
+ struct pca953x_chip *chip;
uint16_t reg_val;
int ret;
- chip = container_of(gc, struct pca9539_chip, gpio_chip);
+ chip = container_of(gc, struct pca953x_chip, gpio_chip);
/* set output level */
if (val)
@@ -92,7 +92,7 @@ static int pca9539_gpio_direction_output(struct gpio_chip *gc,
else
reg_val = chip->reg_output & ~(1u << off);
- ret = pca9539_write_reg(chip, PCA9539_OUTPUT, reg_val);
+ ret = pca953x_write_reg(chip, PCA953X_OUTPUT, reg_val);
if (ret)
return ret;
@@ -100,7 +100,7 @@ static int pca9539_gpio_direction_output(struct gpio_chip *gc,
/* then direction */
reg_val = chip->reg_direction & ~(1u << off);
- ret = pca9539_write_reg(chip, PCA9539_DIRECTION, reg_val);
+ ret = pca953x_write_reg(chip, PCA953X_DIRECTION, reg_val);
if (ret)
return ret;
@@ -108,15 +108,15 @@ static int pca9539_gpio_direction_output(struct gpio_chip *gc,
return 0;
}
-static int pca9539_gpio_get_value(struct gpio_chip *gc, unsigned off)
+static int pca953x_gpio_get_value(struct gpio_chip *gc, unsigned off)
{
- struct pca9539_chip *chip;
+ struct pca953x_chip *chip;
uint16_t reg_val;
int ret;
- chip = container_of(gc, struct pca9539_chip, gpio_chip);
+ chip = container_of(gc, struct pca953x_chip, gpio_chip);
- ret = pca9539_read_reg(chip, PCA9539_INPUT, &reg_val);
+ ret = pca953x_read_reg(chip, PCA953X_INPUT, &reg_val);
if (ret < 0) {
/* NOTE: diagnostic already emitted; that's all we should
* do unless gpio_*_value_cansleep() calls become different
@@ -128,55 +128,55 @@ static int pca9539_gpio_get_value(struct gpio_chip *gc, unsigned off)
return (reg_val & (1u << off)) ? 1 : 0;
}
-static void pca9539_gpio_set_value(struct gpio_chip *gc, unsigned off, int val)
+static void pca953x_gpio_set_value(struct gpio_chip *gc, unsigned off, int val)
{
- struct pca9539_chip *chip;
+ struct pca953x_chip *chip;
uint16_t reg_val;
int ret;
- chip = container_of(gc, struct pca9539_chip, gpio_chip);
+ chip = container_of(gc, struct pca953x_chip, gpio_chip);
if (val)
reg_val = chip->reg_output | (1u << off);
else
reg_val = chip->reg_output & ~(1u << off);
- ret = pca9539_write_reg(chip, PCA9539_OUTPUT, reg_val);
+ ret = pca953x_write_reg(chip, PCA953X_OUTPUT, reg_val);
if (ret)
return;
chip->reg_output = reg_val;
}
-static int pca9539_init_gpio(struct pca9539_chip *chip)
+static int pca953x_init_gpio(struct pca953x_chip *chip)
{
struct gpio_chip *gc;
gc = &chip->gpio_chip;
- gc->direction_input = pca9539_gpio_direction_input;
- gc->direction_output = pca9539_gpio_direction_output;
- gc->get = pca9539_gpio_get_value;
- gc->set = pca9539_gpio_set_value;
+ gc->direction_input = pca953x_gpio_direction_input;
+ gc->direction_output = pca953x_gpio_direction_output;
+ gc->get = pca953x_gpio_get_value;
+ gc->set = pca953x_gpio_set_value;
gc->base = chip->gpio_start;
- gc->ngpio = NR_PCA9539_GPIOS;
- gc->label = "pca9539";
+ gc->ngpio = NR_PCA953X_GPIOS;
+ gc->label = "pca953x";
return gpiochip_add(gc);
}
-static int __devinit pca9539_probe(struct i2c_client *client)
+static int __devinit pca953x_probe(struct i2c_client *client)
{
- struct pca9539_platform_data *pdata;
- struct pca9539_chip *chip;
+ struct pca953x_platform_data *pdata;
+ struct pca953x_chip *chip;
int ret;
pdata = client->dev.platform_data;
if (pdata == NULL)
return -ENODEV;
- chip = kzalloc(sizeof(struct pca9539_chip), GFP_KERNEL);
+ chip = kzalloc(sizeof(struct pca953x_chip), GFP_KERNEL);
if (chip == NULL)
return -ENOMEM;
@@ -187,20 +187,20 @@ static int __devinit pca9539_probe(struct i2c_client *client)
/* initialize cached registers from their original values.
* we can't share this chip with another i2c master.
*/
- ret = pca9539_read_reg(chip, PCA9539_OUTPUT, &chip->reg_output);
+ ret = pca953x_read_reg(chip, PCA953X_OUTPUT, &chip->reg_output);
if (ret)
goto out_failed;
- ret = pca9539_read_reg(chip, PCA9539_DIRECTION, &chip->reg_direction);
+ ret = pca953x_read_reg(chip, PCA953X_DIRECTION, &chip->reg_direction);
if (ret)
goto out_failed;
/* set platform specific polarity inversion */
- ret = pca9539_write_reg(chip, PCA9539_INVERT, pdata->invert);
+ ret = pca953x_write_reg(chip, PCA953X_INVERT, pdata->invert);
if (ret)
goto out_failed;
- ret = pca9539_init_gpio(chip);
+ ret = pca953x_init_gpio(chip);
if (ret)
goto out_failed;
@@ -219,10 +219,10 @@ out_failed:
return ret;
}
-static int pca9539_remove(struct i2c_client *client)
+static int pca953x_remove(struct i2c_client *client)
{
- struct pca9539_platform_data *pdata = client->dev.platform_data;
- struct pca9539_chip *chip = i2c_get_clientdata(client);
+ struct pca953x_platform_data *pdata = client->dev.platform_data;
+ struct pca953x_chip *chip = i2c_get_clientdata(client);
int ret = 0;
if (pdata->teardown) {
@@ -246,26 +246,26 @@ static int pca9539_remove(struct i2c_client *client)
return 0;
}
-static struct i2c_driver pca9539_driver = {
+static struct i2c_driver pca953x_driver = {
.driver = {
- .name = "pca9539",
+ .name = "pca953x",
},
- .probe = pca9539_probe,
- .remove = pca9539_remove,
+ .probe = pca953x_probe,
+ .remove = pca953x_remove,
};
-static int __init pca9539_init(void)
+static int __init pca953x_init(void)
{
- return i2c_add_driver(&pca9539_driver);
+ return i2c_add_driver(&pca953x_driver);
}
-module_init(pca9539_init);
+module_init(pca953x_init);
-static void __exit pca9539_exit(void)
+static void __exit pca953x_exit(void)
{
- i2c_del_driver(&pca9539_driver);
+ i2c_del_driver(&pca953x_driver);
}
-module_exit(pca9539_exit);
+module_exit(pca953x_exit);
MODULE_AUTHOR("eric miao <eric.miao@marvell.com>");
-MODULE_DESCRIPTION("GPIO expander driver for PCA9539");
+MODULE_DESCRIPTION("GPIO expander driver for PCA953x");
MODULE_LICENSE("GPL");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-16 14:04:30 +0000