2  * LED driver for WM8350 driven LEDS.
92 static int wm8350_led_enable(struct wm8350_led *led)  in wm8350_led_enable()  argument
96 	if (led->enabled)  in wm8350_led_enable()
99 	ret = regulator_enable(led->isink);  in wm8350_led_enable()
101 		dev_err(led->cdev.dev, "Failed to enable ISINK: %d\n", ret);  in wm8350_led_enable()
105 	ret = regulator_enable(led->dcdc);  in wm8350_led_enable()
107 		dev_err(led->cdev.dev, "Failed to enable DCDC: %d\n", ret);  in wm8350_led_enable()
108 		regulator_disable(led->isink);  in wm8350_led_enable()
112 	led->enabled = 1;  in wm8350_led_enable()
117 static int wm8350_led_disable(struct wm8350_led *led)  in wm8350_led_disable()  argument
121 	if (!led->enabled)  in wm8350_led_disable()
124 	ret = regulator_disable(led->dcdc);  in wm8350_led_disable()
126 		dev_err(led->cdev.dev, "Failed to disable DCDC: %d\n", ret);  in wm8350_led_disable()
130 	ret = regulator_disable(led->isink);  in wm8350_led_disable()
132 		dev_err(led->cdev.dev, "Failed to disable ISINK: %d\n", ret);  in wm8350_led_disable()
133 		ret = regulator_enable(led->dcdc);  in wm8350_led_disable()
135 			dev_err(led->cdev.dev, "Failed to reenable DCDC: %d\n",  in wm8350_led_disable()
140 	led->enabled = 0;  in wm8350_led_disable()
148 	struct wm8350_led *led = to_wm8350_led(led_cdev);  in wm8350_led_set()  local
153 	led->value = value;  in wm8350_led_set()
155 	spin_lock_irqsave(&led->value_lock, flags);  in wm8350_led_set()
157 	if (led->value == LED_OFF) {  in wm8350_led_set()
158 		spin_unlock_irqrestore(&led->value_lock, flags);  in wm8350_led_set()
159 		return wm8350_led_disable(led);  in wm8350_led_set()
167 	uA = (led->max_uA_index * led->value) / LED_FULL;  in wm8350_led_set()
168 	spin_unlock_irqrestore(&led->value_lock, flags);  in wm8350_led_set()
171 	ret = regulator_set_current_limit(led->isink, isink_cur[uA],  in wm8350_led_set()
174 		dev_err(led->cdev.dev, "Failed to set %duA: %d\n",  in wm8350_led_set()
179 	return wm8350_led_enable(led);  in wm8350_led_set()
184 	struct wm8350_led *led = platform_get_drvdata(pdev);  in wm8350_led_shutdown()  local
186 	led->value = LED_OFF;  in wm8350_led_shutdown()
187 	wm8350_led_disable(led);  in wm8350_led_shutdown()
193 	struct wm8350_led *led;  in wm8350_led_probe()  local
220 	led = devm_kzalloc(&pdev->dev, sizeof(*led), GFP_KERNEL);  in wm8350_led_probe()
221 	if (led == NULL)  in wm8350_led_probe()
224 	led->cdev.brightness_set_blocking = wm8350_led_set;  in wm8350_led_probe()
225 	led->cdev.default_trigger = pdata->default_trigger;  in wm8350_led_probe()
226 	led->cdev.name = pdata->name;  in wm8350_led_probe()
227 	led->cdev.flags |= LED_CORE_SUSPENDRESUME;  in wm8350_led_probe()
228 	led->enabled = regulator_is_enabled(isink);  in wm8350_led_probe()
229 	led->isink = isink;  in wm8350_led_probe()
230 	led->dcdc = dcdc;  in wm8350_led_probe()
235 	led->max_uA_index = i;  in wm8350_led_probe()
242 	spin_lock_init(&led->value_lock);  in wm8350_led_probe()
243 	led->value = LED_OFF;  in wm8350_led_probe()
244 	platform_set_drvdata(pdev, led);  in wm8350_led_probe()
246 	return led_classdev_register(&pdev->dev, &led->cdev);  in wm8350_led_probe()
251 	struct wm8350_led *led = platform_get_drvdata(pdev);  in wm8350_led_remove()  local
253 	led_classdev_unregister(&led->cdev);  in wm8350_led_remove()
254 	wm8350_led_disable(led);  in wm8350_led_remove()
260 		   .name = "wm8350-led",
270 MODULE_DESCRIPTION("WM8350 LED driver");
272 MODULE_ALIAS("platform:wm8350-led");