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gpio: rename pca953x symbols

Browse source 
This second part of an extension to support more pca953x chips renames the C
and Kconfig symbols.  All affected files were updated by sed, except for a
couple of obvious exceptions.  It also updates the Kconfig helptext.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Guennadi Liakhovetski 2008-02-06 01:39:03 -08:00 • committed by Linus Torvalds
parent d1c057e317
commit f3dc3630f6
4 changed files with 63 additions and 62 deletions
Download patch file Download diff file Expand all files Collapse all files

11
drivers/gpio/Kconfig
View file

@ -27,15 +27,16 @@ config DEBUG_GPIO
comment "I2C GPIO expanders:" comment "I2C GPIO expanders:"
config GPIO_PCA9539 config GPIO_PCA953X
tristate "PCA9539 16-bit I/O port" tristate "PCA953x I/O ports"
depends on I2C depends on I2C
help help
Say yes here to support the PCA9539 16-bit I/O port. These Say yes here to support the PCA9534 (8-bit), PCA9535 (16-bit),
parts are made by NXP and TI. 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 This driver can also be built as a module. If so, the module
will be called pca9539. will be called pca953x.
config GPIO_PCF857X config GPIO_PCF857X
tristate "PCF857x, PCA857x, and PCA967x I2C GPIO expanders" tristate "PCF857x, PCA857x, and PCA967x I2C GPIO expanders"

2
drivers/gpio/Makefile
View file

@ -5,5 +5,5 @@ ccflags-$(CONFIG_DEBUG_GPIO) += -DDEBUG
obj-$(CONFIG_HAVE_GPIO_LIB) += gpiolib.o obj-$(CONFIG_HAVE_GPIO_LIB) += gpiolib.o
obj-$(CONFIG_GPIO_MCP23S08) += mcp23s08.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 obj-$(CONFIG_GPIO_PCF857X) += pcf857x.o

110
drivers/gpio/pca953x.c
View file

@ -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) 2005 Ben Gardner <bgardner@wabtec.com>
* Copyright (C) 2007 Marvell International Ltd. * Copyright (C) 2007 Marvell International Ltd.
@ -19,14 +19,14 @@
#include <asm/gpio.h> #include <asm/gpio.h>
#define NR_PCA9539_GPIOS 16 #define NR_PCA953X_GPIOS 16
#define PCA9539_INPUT 0 #define PCA953X_INPUT 0
#define PCA9539_OUTPUT 2 #define PCA953X_OUTPUT 2
#define PCA9539_INVERT 4 #define PCA953X_INVERT 4
#define PCA9539_DIRECTION 6 #define PCA953X_DIRECTION 6
struct pca9539_chip { struct pca953x_chip {
unsigned gpio_start; unsigned gpio_start;
uint16_t reg_output; uint16_t reg_output;
uint16_t reg_direction; uint16_t reg_direction;
@ -38,7 +38,7 @@ struct pca9539_chip {
/* NOTE: we can't currently rely on fault codes to come from SMBus /* 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. * 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) if (i2c_smbus_write_word_data(chip->client, reg, val) < 0)
return -EIO; return -EIO;
@ -46,7 +46,7 @@ static int pca9539_write_reg(struct pca9539_chip *chip, int reg, uint16_t val)
return 0; 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; int ret;
@ -60,16 +60,16 @@ static int pca9539_read_reg(struct pca9539_chip *chip, int reg, uint16_t *val)
return 0; 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; uint16_t reg_val;
int ret; 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); 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) if (ret)
return ret; return ret;
@ -77,14 +77,14 @@ static int pca9539_gpio_direction_input(struct gpio_chip *gc, unsigned off)
return 0; 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) unsigned off, int val)
{ {
struct pca9539_chip *chip; struct pca953x_chip *chip;
uint16_t reg_val; uint16_t reg_val;
int ret; int ret;
chip = container_of(gc, struct pca9539_chip, gpio_chip); chip = container_of(gc, struct pca953x_chip, gpio_chip);
/* set output level */ /* set output level */
if (val) if (val)
@ -92,7 +92,7 @@ static int pca9539_gpio_direction_output(struct gpio_chip *gc,
else else
reg_val = chip->reg_output & ~(1u << off); 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) if (ret)
return ret; return ret;
@ -100,7 +100,7 @@ static int pca9539_gpio_direction_output(struct gpio_chip *gc,
/* then direction */ /* then direction */
reg_val = chip->reg_direction & ~(1u << off); 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) if (ret)
return ret; return ret;
@ -108,15 +108,15 @@ static int pca9539_gpio_direction_output(struct gpio_chip *gc,
return 0; 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; uint16_t reg_val;
int ret; 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) { if (ret < 0) {
/* NOTE: diagnostic already emitted; that's all we should /* NOTE: diagnostic already emitted; that's all we should
* do unless gpio_*_value_cansleep() calls become different * 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; 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; uint16_t reg_val;
int ret; int ret;
chip = container_of(gc, struct pca9539_chip, gpio_chip); chip = container_of(gc, struct pca953x_chip, gpio_chip);
if (val) if (val)
reg_val = chip->reg_output | (1u << off); reg_val = chip->reg_output | (1u << off);
else else
reg_val = chip->reg_output & ~(1u << off); 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) if (ret)
return; return;
chip->reg_output = reg_val; 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; struct gpio_chip *gc;
gc = &chip->gpio_chip; gc = &chip->gpio_chip;
gc->direction_input = pca9539_gpio_direction_input; gc->direction_input = pca953x_gpio_direction_input;
gc->direction_output = pca9539_gpio_direction_output; gc->direction_output = pca953x_gpio_direction_output;
gc->get = pca9539_gpio_get_value; gc->get = pca953x_gpio_get_value;
gc->set = pca9539_gpio_set_value; gc->set = pca953x_gpio_set_value;
gc->base = chip->gpio_start; gc->base = chip->gpio_start;
gc->ngpio = NR_PCA9539_GPIOS; gc->ngpio = NR_PCA953X_GPIOS;
gc->label = "pca9539"; gc->label = "pca953x";
return gpiochip_add(gc); 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 pca953x_platform_data *pdata;
struct pca9539_chip *chip; struct pca953x_chip *chip;
int ret; int ret;
pdata = client->dev.platform_data; pdata = client->dev.platform_data;
if (pdata == NULL) if (pdata == NULL)
return -ENODEV; return -ENODEV;
chip = kzalloc(sizeof(struct pca9539_chip), GFP_KERNEL); chip = kzalloc(sizeof(struct pca953x_chip), GFP_KERNEL);
if (chip == NULL) if (chip == NULL)
return -ENOMEM; return -ENOMEM;
@ -187,20 +187,20 @@ static int __devinit pca9539_probe(struct i2c_client *client)
/* initialize cached registers from their original values. /* initialize cached registers from their original values.
* we can't share this chip with another i2c master. * 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) if (ret)
goto out_failed; 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) if (ret)
goto out_failed; goto out_failed;
/* set platform specific polarity inversion */ /* 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) if (ret)
goto out_failed; goto out_failed;
ret = pca9539_init_gpio(chip); ret = pca953x_init_gpio(chip);
if (ret) if (ret)
goto out_failed; goto out_failed;
@ -219,10 +219,10 @@ out_failed:
return ret; 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 pca953x_platform_data *pdata = client->dev.platform_data;
struct pca9539_chip *chip = i2c_get_clientdata(client); struct pca953x_chip *chip = i2c_get_clientdata(client);
int ret = 0; int ret = 0;
if (pdata->teardown) { if (pdata->teardown) {
@ -246,26 +246,26 @@ static int pca9539_remove(struct i2c_client *client)
return 0; return 0;
} }
static struct i2c_driver pca9539_driver = { static struct i2c_driver pca953x_driver = {
.driver = { .driver = {
.name = "pca9539", .name = "pca953x",
}, },
.probe = pca9539_probe, .probe = pca953x_probe,
.remove = pca9539_remove, .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_AUTHOR("eric miao <eric.miao@marvell.com>");
MODULE_DESCRIPTION("GPIO expander driver for PCA9539"); MODULE_DESCRIPTION("GPIO expander driver for PCA953x");
MODULE_LICENSE("GPL"); MODULE_LICENSE("GPL");

2
include/linux/i2c/pca953x.h
View file

@ -1,6 +1,6 @@
/* platform data for the PCA9539 16-bit I/O expander driver */ /* platform data for the PCA9539 16-bit I/O expander driver */
struct pca9539_platform_data { struct pca953x_platform_data {
/* number of the first GPIO */ /* number of the first GPIO */
unsigned gpio_base; unsigned gpio_base;