ledtrig-gpio.c (033692eb3ec8305f6e9998b297aaec6899680637) ledtrig-gpio.c (2282e125a406e09331c5a785e3df29035c99a607)
1/*
2 * ledtrig-gio.c - LED Trigger Based on GPIO events
3 *
4 * Copyright 2009 Felipe Balbi <me@felipebalbi.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.

--- 148 unchanged lines hidden (view full) ---

157 /* After changing the GPIO, we need to update the LED. */
158 gpio_trig_irq(0, led);
159 }
160
161 return ret ? ret : n;
162}
163static DEVICE_ATTR(gpio, 0644, gpio_trig_gpio_show, gpio_trig_gpio_store);
164
1/*
2 * ledtrig-gio.c - LED Trigger Based on GPIO events
3 *
4 * Copyright 2009 Felipe Balbi <me@felipebalbi.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.

--- 148 unchanged lines hidden (view full) ---

157 /* After changing the GPIO, we need to update the LED. */
158 gpio_trig_irq(0, led);
159 }
160
161 return ret ? ret : n;
162}
163static DEVICE_ATTR(gpio, 0644, gpio_trig_gpio_show, gpio_trig_gpio_store);
164
165static void gpio_trig_activate(struct led_classdev *led)
165static int gpio_trig_activate(struct led_classdev *led)
166{
167 struct gpio_trig_data *gpio_data;
168 int ret;
169
170 gpio_data = kzalloc(sizeof(*gpio_data), GFP_KERNEL);
171 if (!gpio_data)
166{
167 struct gpio_trig_data *gpio_data;
168 int ret;
169
170 gpio_data = kzalloc(sizeof(*gpio_data), GFP_KERNEL);
171 if (!gpio_data)
172 return;
172 return 0;
173
174 ret = device_create_file(led->dev, &dev_attr_gpio);
175 if (ret)
176 goto err_gpio;
177
178 ret = device_create_file(led->dev, &dev_attr_inverted);
179 if (ret)
180 goto err_inverted;
181
182 ret = device_create_file(led->dev, &dev_attr_desired_brightness);
183 if (ret)
184 goto err_brightness;
185
186 gpio_data->led = led;
187 led->trigger_data = gpio_data;
188 led->activated = true;
189
173
174 ret = device_create_file(led->dev, &dev_attr_gpio);
175 if (ret)
176 goto err_gpio;
177
178 ret = device_create_file(led->dev, &dev_attr_inverted);
179 if (ret)
180 goto err_inverted;
181
182 ret = device_create_file(led->dev, &dev_attr_desired_brightness);
183 if (ret)
184 goto err_brightness;
185
186 gpio_data->led = led;
187 led->trigger_data = gpio_data;
188 led->activated = true;
189
190 return;
190 return 0;
191
192err_brightness:
193 device_remove_file(led->dev, &dev_attr_inverted);
194
195err_inverted:
196 device_remove_file(led->dev, &dev_attr_gpio);
197
198err_gpio:
199 kfree(gpio_data);
191
192err_brightness:
193 device_remove_file(led->dev, &dev_attr_inverted);
194
195err_inverted:
196 device_remove_file(led->dev, &dev_attr_gpio);
197
198err_gpio:
199 kfree(gpio_data);
200
201 return 0;
200}
201
202static void gpio_trig_deactivate(struct led_classdev *led)
203{
204 struct gpio_trig_data *gpio_data = led->trigger_data;
205
206 if (led->activated) {
207 device_remove_file(led->dev, &dev_attr_gpio);

--- 30 unchanged lines hidden --- 		202}
203
204static void gpio_trig_deactivate(struct led_classdev *led)
205{
206 struct gpio_trig_data *gpio_data = led->trigger_data;
207
208 if (led->activated) {
209 device_remove_file(led->dev, &dev_attr_gpio);

--- 30 unchanged lines hidden ---