diff options
Diffstat (limited to 'drivers/i2c/muxes')
| -rw-r--r-- | drivers/i2c/muxes/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/i2c/muxes/i2c-arb-gpio-challenge.c | 1 | ||||
| -rw-r--r-- | drivers/i2c/muxes/i2c-mux-gpio.c | 1 | ||||
| -rw-r--r-- | drivers/i2c/muxes/i2c-mux-pca9541.c | 1 | ||||
| -rw-r--r-- | drivers/i2c/muxes/i2c-mux-pca954x.c | 33 | ||||
| -rw-r--r-- | drivers/i2c/muxes/i2c-mux-pinctrl.c | 1 |
6 files changed, 17 insertions, 21 deletions
diff --git a/drivers/i2c/muxes/Kconfig b/drivers/i2c/muxes/Kconfig index f7f9865b8b8..f6d313e528d 100644 --- a/drivers/i2c/muxes/Kconfig +++ b/drivers/i2c/muxes/Kconfig @@ -40,6 +40,7 @@ config I2C_MUX_PCA9541 config I2C_MUX_PCA954x tristate "Philips PCA954x I2C Mux/switches" + depends on GPIOLIB help If you say yes here you get support for the Philips PCA954x I2C mux/switch devices. diff --git a/drivers/i2c/muxes/i2c-arb-gpio-challenge.c b/drivers/i2c/muxes/i2c-arb-gpio-challenge.c index c58e093b603..69afffa8f42 100644 --- a/drivers/i2c/muxes/i2c-arb-gpio-challenge.c +++ b/drivers/i2c/muxes/i2c-arb-gpio-challenge.c @@ -19,7 +19,6 @@ #include <linux/kernel.h> #include <linux/i2c.h> #include <linux/i2c-mux.h> -#include <linux/init.h> #include <linux/module.h> #include <linux/of_gpio.h> #include <linux/platform_device.h> diff --git a/drivers/i2c/muxes/i2c-mux-gpio.c b/drivers/i2c/muxes/i2c-mux-gpio.c index 8a8c56f4b02..d8989c823f5 100644 --- a/drivers/i2c/muxes/i2c-mux-gpio.c +++ b/drivers/i2c/muxes/i2c-mux-gpio.c @@ -12,7 +12,6 @@ #include <linux/i2c-mux.h> #include <linux/i2c-mux-gpio.h> #include <linux/platform_device.h> -#include <linux/init.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/gpio.h> diff --git a/drivers/i2c/muxes/i2c-mux-pca9541.c b/drivers/i2c/muxes/i2c-mux-pca9541.c index c4f08ad3118..cb772775da4 100644 --- a/drivers/i2c/muxes/i2c-mux-pca9541.c +++ b/drivers/i2c/muxes/i2c-mux-pca9541.c @@ -17,7 +17,6 @@ */ #include <linux/module.h> -#include <linux/init.h> #include <linux/jiffies.h> #include <linux/delay.h> #include <linux/slab.h> diff --git a/drivers/i2c/muxes/i2c-mux-pca954x.c b/drivers/i2c/muxes/i2c-mux-pca954x.c index bad5b84a598..9bd4212782a 100644 --- a/drivers/i2c/muxes/i2c-mux-pca954x.c +++ b/drivers/i2c/muxes/i2c-mux-pca954x.c @@ -28,21 +28,20 @@ * Based on: * i2c-virtual_cb.c from Brian Kuschak <bkuschak@yahoo.com> * and - * pca9540.c from Jean Delvare <khali@linux-fr.org>. + * pca9540.c from Jean Delvare <jdelvare@suse.de>. * * This file is licensed under the terms of the GNU General Public * License version 2. This program is licensed "as is" without any * warranty of any kind, whether express or implied. */ -#include <linux/module.h> -#include <linux/init.h> -#include <linux/slab.h> #include <linux/device.h> +#include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/i2c-mux.h> - #include <linux/i2c/pca954x.h> +#include <linux/module.h> +#include <linux/slab.h> #define PCA954X_MAX_NCHANS 8 @@ -186,28 +185,32 @@ static int pca954x_probe(struct i2c_client *client, { struct i2c_adapter *adap = to_i2c_adapter(client->dev.parent); struct pca954x_platform_data *pdata = dev_get_platdata(&client->dev); + struct gpio_desc *gpio; int num, force, class; struct pca954x *data; - int ret = -ENODEV; + int ret; if (!i2c_check_functionality(adap, I2C_FUNC_SMBUS_BYTE)) - goto err; + return -ENODEV; - data = kzalloc(sizeof(struct pca954x), GFP_KERNEL); - if (!data) { - ret = -ENOMEM; - goto err; - } + data = devm_kzalloc(&client->dev, sizeof(struct pca954x), GFP_KERNEL); + if (!data) + return -ENOMEM; i2c_set_clientdata(client, data); + /* Get the mux out of reset if a reset GPIO is specified. */ + gpio = devm_gpiod_get(&client->dev, "reset"); + if (!IS_ERR(gpio)) + gpiod_direction_output(gpio, 0); + /* Write the mux register at addr to verify * that the mux is in fact present. This also * initializes the mux to disconnected state. */ if (i2c_smbus_write_byte(client, 0) < 0) { dev_warn(&client->dev, "probe failed\n"); - goto exit_free; + return -ENODEV; } data->type = id->driver_data; @@ -252,9 +255,6 @@ static int pca954x_probe(struct i2c_client *client, virt_reg_failed: for (num--; num >= 0; num--) i2c_del_mux_adapter(data->virt_adaps[num]); -exit_free: - kfree(data); -err: return ret; } @@ -270,7 +270,6 @@ static int pca954x_remove(struct i2c_client *client) data->virt_adaps[i] = NULL; } - kfree(data); return 0; } diff --git a/drivers/i2c/muxes/i2c-mux-pinctrl.c b/drivers/i2c/muxes/i2c-mux-pinctrl.c index d7978dc4ad0..4ff0ef3e07a 100644 --- a/drivers/i2c/muxes/i2c-mux-pinctrl.c +++ b/drivers/i2c/muxes/i2c-mux-pinctrl.c @@ -18,7 +18,6 @@ #include <linux/i2c.h> #include <linux/i2c-mux.h> -#include <linux/init.h> #include <linux/module.h> #include <linux/pinctrl/consumer.h> #include <linux/i2c-mux-pinctrl.h> |