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i2c: Rename last mux driver to standard pattern

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Update the MAINTAINERS entry and all other references accordingly.

Based on an original patch by Wolfram Sang.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Peter Korsgaard <peter.korsgaard@barco.com>

[wsa: fixed merge conflict due to rework in i2c_add_mux_adapter()]

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
This commit is contained in:
Jean Delvare 2012-04-28 15:32:06 +02:00 committed by Wolfram Sang
parent 353f56b5f3
commit e7065e20d9
6 changed files with 39 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
Documentation/i2c/muxes/gpio-i2cmux → Documentation/i2c/muxes/i2c-mux-gpio
View File

@ -1,11 +1,11 @@
Kernel driver gpio-i2cmux
Kernel driver i2c-gpio-mux
Author: Peter Korsgaard <peter.korsgaard@barco.com>
Description
-----------
gpio-i2cmux is an i2c mux driver providing access to I2C bus segments
i2c-gpio-mux is an i2c mux driver providing access to I2C bus segments
from a master I2C bus and a hardware MUX controlled through GPIO pins.
E.G.:
@ -26,16 +26,16 @@ according to the settings of the GPIO pins 1..N.
Usage
-----
gpio-i2cmux uses the platform bus, so you need to provide a struct
i2c-gpio-mux uses the platform bus, so you need to provide a struct
platform_device with the platform_data pointing to a struct
gpio_i2cmux_platform_data with the I2C adapter number of the master
bus, the number of bus segments to create and the GPIO pins used
to control it. See include/linux/gpio-i2cmux.h for details.
to control it. See include/linux/i2c-gpio-mux.h for details.
E.G. something like this for a MUX providing 4 bus segments
controlled through 3 GPIO pins:
#include <linux/gpio-i2cmux.h>
#include <linux/i2c-gpio-mux.h>
#include <linux/platform_device.h>
static const unsigned myboard_gpiomux_gpios[] = {
@ -57,7 +57,7 @@ static struct gpio_i2cmux_platform_data myboard_i2cmux_data = {
};
static struct platform_device myboard_i2cmux = {
.name = "gpio-i2cmux",
.name = "i2c-gpio-mux",
.id = 0,
.dev = {
.platform_data = &myboard_i2cmux_data,

6
MAINTAINERS
View File

@ -2937,9 +2937,9 @@ GENERIC GPIO I2C MULTIPLEXER DRIVER
M: Peter Korsgaard <peter.korsgaard@barco.com>
L: linux-i2c@vger.kernel.org
S: Supported
F: drivers/i2c/muxes/gpio-i2cmux.c
F: include/linux/gpio-i2cmux.h
F: Documentation/i2c/muxes/gpio-i2cmux
F: drivers/i2c/muxes/i2c-mux-gpio.c
F: include/linux/i2c-mux-gpio.h
F: Documentation/i2c/muxes/i2c-mux-gpio
GENERIC HDLC (WAN) DRIVERS
M: Krzysztof Halasa <khc@pm.waw.pl>

2
drivers/i2c/muxes/Kconfig
View File

@ -15,7 +15,7 @@ config I2C_MUX_GPIO
through GPIO pins.
This driver can also be built as a module. If so, the module
will be called gpio-i2cmux.
will be called i2c-mux-gpio.
config I2C_MUX_PCA9541
tristate "NXP PCA9541 I2C Master Selector"

2
drivers/i2c/muxes/Makefile
View File

@ -1,7 +1,7 @@
#
# Makefile for multiplexer I2C chip drivers.
obj-$(CONFIG_I2C_MUX_GPIO) += gpio-i2cmux.o
obj-$(CONFIG_I2C_MUX_GPIO) += i2c-mux-gpio.o
obj-$(CONFIG_I2C_MUX_PCA9541) += i2c-mux-pca9541.o
obj-$(CONFIG_I2C_MUX_PCA954x) += i2c-mux-pca954x.o

43
drivers/i2c/muxes/gpio-i2cmux.c → drivers/i2c/muxes/i2c-mux-gpio.c
View File

@ -10,7 +10,7 @@
#include <linux/i2c.h>
#include <linux/i2c-mux.h>
#include <linux/gpio-i2cmux.h>
#include <linux/i2c-mux-gpio.h>
#include <linux/platform_device.h>
#include <linux/init.h>
#include <linux/module.h>
@ -20,10 +20,10 @@
struct gpiomux {
struct i2c_adapter *parent;
struct i2c_adapter **adap; /* child busses */
struct gpio_i2cmux_platform_data data;
struct i2c_mux_gpio_platform_data data;
};
static void gpiomux_set(const struct gpiomux *mux, unsigned val)
static void i2c_mux_gpio_set(const struct gpiomux *mux, unsigned val)
{
int i;
@ -31,28 +31,28 @@ static void gpiomux_set(const struct gpiomux *mux, unsigned val)
gpio_set_value(mux->data.gpios[i], val & (1 << i));
}
static int gpiomux_select(struct i2c_adapter *adap, void *data, u32 chan)
static int i2c_mux_gpio_select(struct i2c_adapter *adap, void *data, u32 chan)
{
struct gpiomux *mux = data;
gpiomux_set(mux, mux->data.values[chan]);
i2c_mux_gpio_set(mux, mux->data.values[chan]);
return 0;
}
static int gpiomux_deselect(struct i2c_adapter *adap, void *data, u32 chan)
static int i2c_mux_gpio_deselect(struct i2c_adapter *adap, void *data, u32 chan)
{
struct gpiomux *mux = data;
gpiomux_set(mux, mux->data.idle);
i2c_mux_gpio_set(mux, mux->data.idle);
return 0;
}
static int __devinit gpiomux_probe(struct platform_device *pdev)
static int __devinit i2c_mux_gpio_probe(struct platform_device *pdev)
{
struct gpiomux *mux;
struct gpio_i2cmux_platform_data *pdata;
struct i2c_mux_gpio_platform_data *pdata;
struct i2c_adapter *parent;
int (*deselect) (struct i2c_adapter *, void *, u32);
unsigned initial_state;
@ -86,16 +86,16 @@ static int __devinit gpiomux_probe(struct platform_device *pdev)
goto alloc_failed2;
}
if (pdata->idle != GPIO_I2CMUX_NO_IDLE) {
if (pdata->idle != I2C_MUX_GPIO_NO_IDLE) {
initial_state = pdata->idle;
deselect = gpiomux_deselect;
deselect = i2c_mux_gpio_deselect;
} else {
initial_state = pdata->values[0];
deselect = NULL;
}
for (i = 0; i < pdata->n_gpios; i++) {
ret = gpio_request(pdata->gpios[i], "gpio-i2cmux");
ret = gpio_request(pdata->gpios[i], "i2c-mux-gpio");
if (ret)
goto err_request_gpio;
gpio_direction_output(pdata->gpios[i],
@ -105,9 +105,8 @@ static int __devinit gpiomux_probe(struct platform_device *pdev)
for (i = 0; i < pdata->n_values; i++) {
u32 nr = pdata->base_nr ? (pdata->base_nr + i) : 0;
mux->adap[i] = i2c_add_mux_adapter(parent, &pdev->dev, mux,
nr, i,
gpiomux_select, deselect);
mux->adap[i] = i2c_add_mux_adapter(parent, &pdev->dev, mux, nr, i,
i2c_mux_gpio_select, deselect);
if (!mux->adap[i]) {
ret = -ENODEV;
dev_err(&pdev->dev, "Failed to add adapter %d\n", i);
@ -138,7 +137,7 @@ static int __devinit gpiomux_probe(struct platform_device *pdev)
return ret;
}
static int __devexit gpiomux_remove(struct platform_device *pdev)
static int __devexit i2c_mux_gpio_remove(struct platform_device *pdev)
{
struct gpiomux *mux = platform_get_drvdata(pdev);
int i;
@ -157,18 +156,18 @@ static int __devexit gpiomux_remove(struct platform_device *pdev)
return 0;
}
static struct platform_driver gpiomux_driver = {
.probe = gpiomux_probe,
.remove = __devexit_p(gpiomux_remove),
static struct platform_driver i2c_mux_gpio_driver = {
.probe = i2c_mux_gpio_probe,
.remove = __devexit_p(i2c_mux_gpio_remove),
.driver = {
.owner = THIS_MODULE,
.name = "gpio-i2cmux",
.name = "i2c-mux-gpio",
},
};
module_platform_driver(gpiomux_driver);
module_platform_driver(i2c_mux_gpio_driver);
MODULE_DESCRIPTION("GPIO-based I2C multiplexer driver");
MODULE_AUTHOR("Peter Korsgaard <peter.korsgaard@barco.com>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:gpio-i2cmux");
MODULE_ALIAS("platform:i2c-mux-gpio");

14
include/linux/gpio-i2cmux.h → include/linux/i2c-mux-gpio.h
View File

@ -1,5 +1,5 @@
/*
* gpio-i2cmux interface to platform code
* i2c-mux-gpio interface to platform code
*
* Peter Korsgaard <peter.korsgaard@barco.com>
*
@ -8,14 +8,14 @@
* published by the Free Software Foundation.
*/
#ifndef _LINUX_GPIO_I2CMUX_H
#define _LINUX_GPIO_I2CMUX_H
#ifndef _LINUX_I2C_MUX_GPIO_H
#define _LINUX_I2C_MUX_GPIO_H
/* MUX has no specific idle mode */
#define GPIO_I2CMUX_NO_IDLE ((unsigned)-1)
#define I2C_MUX_GPIO_NO_IDLE ((unsigned)-1)
/**
* struct gpio_i2cmux_platform_data - Platform-dependent data for gpio-i2cmux
* struct i2c_mux_gpio_platform_data - Platform-dependent data for i2c-mux-gpio
* @parent: Parent I2C bus adapter number
* @base_nr: Base I2C bus number to number adapters from or zero for dynamic
* @values: Array of bitmasks of GPIO settings (low/high) for each
@ -25,7 +25,7 @@
* @n_gpios: Number of GPIOs used to control MUX
* @idle: Bitmask to write to MUX when idle or GPIO_I2CMUX_NO_IDLE if not used
*/
struct gpio_i2cmux_platform_data {
struct i2c_mux_gpio_platform_data {
int parent;
int base_nr;
const unsigned *values;
@ -35,4 +35,4 @@ struct gpio_i2cmux_platform_data {
unsigned idle;
};
#endif /* _LINUX_GPIO_I2CMUX_H */
#endif /* _LINUX_I2C_MUX_GPIO_H */