Lines Matching refs:led
12 #include <linux/led-class-flash.h>
95 static void ktd2692_expresswire_start(struct ktd2692_context *led)
97 gpiod_direction_output(led->ctrl_gpio, KTD2692_HIGH);
101 static void ktd2692_expresswire_reset(struct ktd2692_context *led)
103 gpiod_direction_output(led->ctrl_gpio, KTD2692_LOW);
107 static void ktd2692_expresswire_end(struct ktd2692_context *led)
109 gpiod_direction_output(led->ctrl_gpio, KTD2692_LOW);
111 gpiod_direction_output(led->ctrl_gpio, KTD2692_HIGH);
115 static void ktd2692_expresswire_set_bit(struct ktd2692_context *led, bool bit)
134 gpiod_direction_output(led->ctrl_gpio, KTD2692_LOW);
136 gpiod_direction_output(led->ctrl_gpio, KTD2692_HIGH);
139 gpiod_direction_output(led->ctrl_gpio, KTD2692_LOW);
141 gpiod_direction_output(led->ctrl_gpio, KTD2692_HIGH);
146 static void ktd2692_expresswire_write(struct ktd2692_context *led, u8 value)
150 ktd2692_expresswire_start(led);
152 ktd2692_expresswire_set_bit(led, value & BIT(i));
153 ktd2692_expresswire_end(led);
160 struct ktd2692_context *led = fled_cdev_to_led(fled_cdev);
162 mutex_lock(&led->lock);
165 led->mode = KTD2692_MODE_DISABLE;
166 gpiod_direction_output(led->aux_gpio, KTD2692_LOW);
168 ktd2692_expresswire_write(led, brightness |
170 led->mode = KTD2692_MODE_MOVIE;
173 ktd2692_expresswire_write(led, led->mode | KTD2692_REG_MODE_BASE);
174 mutex_unlock(&led->lock);
182 struct ktd2692_context *led = fled_cdev_to_led(fled_cdev);
186 mutex_lock(&led->lock);
190 ktd2692_expresswire_write(led, flash_tm_reg
193 led->mode = KTD2692_MODE_FLASH;
194 gpiod_direction_output(led->aux_gpio, KTD2692_HIGH);
196 led->mode = KTD2692_MODE_DISABLE;
197 gpiod_direction_output(led->aux_gpio, KTD2692_LOW);
200 ktd2692_expresswire_write(led, led->mode | KTD2692_REG_MODE_BASE);
203 led->mode = KTD2692_MODE_DISABLE;
205 mutex_unlock(&led->lock);
247 static void ktd2692_setup(struct ktd2692_context *led)
249 led->mode = KTD2692_MODE_DISABLE;
250 ktd2692_expresswire_reset(led);
251 gpiod_direction_output(led->aux_gpio, KTD2692_LOW);
253 ktd2692_expresswire_write(led, (KTD2692_MM_MIN_CURR_THRESHOLD_SCALE - 1)
255 ktd2692_expresswire_write(led, KTD2692_FLASH_MODE_CURR_PERCENT(45)
262 struct ktd2692_context *led = dev_get_drvdata(dev);
265 ret = regulator_disable(led->regulator);
270 static int ktd2692_parse_dt(struct ktd2692_context *led, struct device *dev,
280 led->ctrl_gpio = devm_gpiod_get(dev, "ctrl", GPIOD_ASIS);
281 ret = PTR_ERR_OR_ZERO(led->ctrl_gpio);
285 led->aux_gpio = devm_gpiod_get_optional(dev, "aux", GPIOD_ASIS);
286 if (IS_ERR(led->aux_gpio))
287 return dev_err_probe(dev, PTR_ERR(led->aux_gpio), "cannot get aux-gpios\n");
289 led->regulator = devm_regulator_get(dev, "vin");
290 if (IS_ERR(led->regulator))
291 led->regulator = NULL;
293 if (led->regulator) {
294 ret = regulator_enable(led->regulator);
311 led->fled_cdev.led_cdev.name =
314 ret = of_property_read_u32(child_node, "led-max-microamp",
317 dev_err(dev, "failed to parse led-max-microamp\n");
347 struct ktd2692_context *led;
353 led = devm_kzalloc(&pdev->dev, sizeof(*led), GFP_KERNEL);
354 if (!led)
357 fled_cdev = &led->fled_cdev;
360 ret = ktd2692_parse_dt(led, &pdev->dev, &led_cfg);
373 mutex_init(&led->lock);
375 platform_set_drvdata(pdev, led);
380 mutex_destroy(&led->lock);
384 ktd2692_setup(led);
391 struct ktd2692_context *led = platform_get_drvdata(pdev);
393 led_classdev_flash_unregister(&led->fled_cdev);
395 mutex_destroy(&led->lock);