ledtrig-backlight.c (9938b04472d5c59f8bd8152a548533a8599596a2) ledtrig-backlight.c (2282e125a406e09331c5a785e3df29035c99a607)
1/*
2 * Backlight emulation LED trigger
3 *
4 * Copyright 2008 (C) Rodolfo Giometti <giometti@linux.it>
5 * Copyright 2008 (C) Eurotech S.p.A. <info@eurotech.it>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as

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92 led_set_brightness_nosleep(led, LED_OFF);
93 else
94 led_set_brightness_nosleep(led, n->brightness);
95
96 return num;
97}
98static DEVICE_ATTR(inverted, 0644, bl_trig_invert_show, bl_trig_invert_store);
99
1/*
2 * Backlight emulation LED trigger
3 *
4 * Copyright 2008 (C) Rodolfo Giometti <giometti@linux.it>
5 * Copyright 2008 (C) Eurotech S.p.A. <info@eurotech.it>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as

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92 led_set_brightness_nosleep(led, LED_OFF);
93 else
94 led_set_brightness_nosleep(led, n->brightness);
95
96 return num;
97}
98static DEVICE_ATTR(inverted, 0644, bl_trig_invert_show, bl_trig_invert_store);
99
100static void bl_trig_activate(struct led_classdev *led)
100static int bl_trig_activate(struct led_classdev *led)
101{
102 int ret;
103
104 struct bl_trig_notifier *n;
105
106 n = kzalloc(sizeof(struct bl_trig_notifier), GFP_KERNEL);
107 led->trigger_data = n;
108 if (!n) {
109 dev_err(led->dev, "unable to allocate backlight trigger\n");
101{
102 int ret;
103
104 struct bl_trig_notifier *n;
105
106 n = kzalloc(sizeof(struct bl_trig_notifier), GFP_KERNEL);
107 led->trigger_data = n;
108 if (!n) {
109 dev_err(led->dev, "unable to allocate backlight trigger\n");
110 return;
110 return 0;
111 }
112
113 ret = device_create_file(led->dev, &dev_attr_inverted);
114 if (ret)
115 goto err_invert;
116
117 n->led = led;
118 n->brightness = led->brightness;
119 n->old_status = UNBLANK;
120 n->notifier.notifier_call = fb_notifier_callback;
121
122 ret = fb_register_client(&n->notifier);
123 if (ret)
124 dev_err(led->dev, "unable to register backlight trigger\n");
125 led->activated = true;
126
111 }
112
113 ret = device_create_file(led->dev, &dev_attr_inverted);
114 if (ret)
115 goto err_invert;
116
117 n->led = led;
118 n->brightness = led->brightness;
119 n->old_status = UNBLANK;
120 n->notifier.notifier_call = fb_notifier_callback;
121
122 ret = fb_register_client(&n->notifier);
123 if (ret)
124 dev_err(led->dev, "unable to register backlight trigger\n");
125 led->activated = true;
126
127 return;
127 return 0;
128
129err_invert:
130 led->trigger_data = NULL;
131 kfree(n);
128
129err_invert:
130 led->trigger_data = NULL;
131 kfree(n);
132
133 return 0;
132}
133
134static void bl_trig_deactivate(struct led_classdev *led)
135{
136 struct bl_trig_notifier *n =
137 (struct bl_trig_notifier *) led->trigger_data;
138
139 if (led->activated) {

--- 29 unchanged lines hidden --- 		134}
135
136static void bl_trig_deactivate(struct led_classdev *led)
137{
138 struct bl_trig_notifier *n =
139 (struct bl_trig_notifier *) led->trigger_data;
140
141 if (led->activated) {

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