3  * Samsung S5K6A3 image sensor driver
45  * struct s5k6a3 - fimc-is sensor data structure
47  * @subdev: the image sensor's v4l2 subdev
49  * @supplies: image sensor's voltage regulator supplies
50  * @gpio_reset: GPIO connected to the sensor's reset pin
52  * @format: media bus format at the sensor's source pad
126 		struct s5k6a3 *sensor, struct v4l2_subdev_state *sd_state,  in __s5k6a3_get_format()  argument
132 	return &sensor->format;  in __s5k6a3_get_format()
139 	struct s5k6a3 *sensor = sd_to_s5k6a3(sd);  in s5k6a3_set_fmt()  local
144 	mf = __s5k6a3_get_format(sensor, sd_state, fmt->pad, fmt->which);  in s5k6a3_set_fmt()
146 		mutex_lock(&sensor->lock);  in s5k6a3_set_fmt()
148 		mutex_unlock(&sensor->lock);  in s5k6a3_set_fmt()
157 	struct s5k6a3 *sensor = sd_to_s5k6a3(sd);  in s5k6a3_get_fmt()  local
160 	mf = __s5k6a3_get_format(sensor, sd_state, fmt->pad, fmt->which);  in s5k6a3_get_fmt()
162 	mutex_lock(&sensor->lock);  in s5k6a3_get_fmt()
164 	mutex_unlock(&sensor->lock);  in s5k6a3_get_fmt()
190 static int __s5k6a3_power_on(struct s5k6a3 *sensor)  in __s5k6a3_power_on()  argument
195 	ret = clk_set_rate(sensor->clock, sensor->clock_frequency);  in __s5k6a3_power_on()
199 	ret = pm_runtime_get(sensor->dev);  in __s5k6a3_power_on()
203 	ret = regulator_enable(sensor->supplies[i].consumer);  in __s5k6a3_power_on()
207 	ret = clk_prepare_enable(sensor->clock);  in __s5k6a3_power_on()
212 		ret = regulator_enable(sensor->supplies[i].consumer);  in __s5k6a3_power_on()
217 	gpiod_set_value_cansleep(sensor->gpio_reset, 0);  in __s5k6a3_power_on()
219 	gpiod_set_value_cansleep(sensor->gpio_reset, 1);  in __s5k6a3_power_on()
221 	gpiod_set_value_cansleep(sensor->gpio_reset, 0);  in __s5k6a3_power_on()
223 	/* Delay needed for the sensor initialization */  in __s5k6a3_power_on()
228 	clk_disable_unprepare(sensor->clock);  in __s5k6a3_power_on()
231 		regulator_disable(sensor->supplies[i].consumer);  in __s5k6a3_power_on()
233 	pm_runtime_put(sensor->dev);  in __s5k6a3_power_on()
237 static int __s5k6a3_power_off(struct s5k6a3 *sensor)  in __s5k6a3_power_off()  argument
241 	gpiod_set_value_cansleep(sensor->gpio_reset, 1);  in __s5k6a3_power_off()
244 		regulator_disable(sensor->supplies[i].consumer);  in __s5k6a3_power_off()
246 	clk_disable_unprepare(sensor->clock);  in __s5k6a3_power_off()
247 	pm_runtime_put(sensor->dev);  in __s5k6a3_power_off()
253 	struct s5k6a3 *sensor = sd_to_s5k6a3(sd);  in s5k6a3_s_power()  local
256 	mutex_lock(&sensor->lock);  in s5k6a3_s_power()
258 	if (sensor->power_count == !on) {  in s5k6a3_s_power()
260 			ret = __s5k6a3_power_on(sensor);  in s5k6a3_s_power()
262 			ret = __s5k6a3_power_off(sensor);  in s5k6a3_s_power()
265 			sensor->power_count += on ? 1 : -1;  in s5k6a3_s_power()
268 	mutex_unlock(&sensor->lock);  in s5k6a3_s_power()
284 	struct s5k6a3 *sensor;  in s5k6a3_probe()  local
288 	sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);  in s5k6a3_probe()
289 	if (!sensor)  in s5k6a3_probe()
292 	mutex_init(&sensor->lock);  in s5k6a3_probe()
293 	sensor->dev = dev;  in s5k6a3_probe()
295 	sensor->clock = devm_clk_get(sensor->dev, S5K6A3_CLK_NAME);  in s5k6a3_probe()
296 	if (IS_ERR(sensor->clock))  in s5k6a3_probe()
297 		return PTR_ERR(sensor->clock);  in s5k6a3_probe()
299 	sensor->gpio_reset = devm_gpiod_get(dev, NULL, GPIOD_OUT_HIGH);  in s5k6a3_probe()
300 	ret = PTR_ERR_OR_ZERO(sensor->gpio_reset);  in s5k6a3_probe()
305 				 &sensor->clock_frequency)) {  in s5k6a3_probe()
306 		sensor->clock_frequency = S5K6A3_DEFAULT_CLK_FREQ;  in s5k6a3_probe()
308 					sensor->clock_frequency);  in s5k6a3_probe()
312 		sensor->supplies[i].supply = s5k6a3_supply_names[i];  in s5k6a3_probe()
315 				      sensor->supplies);  in s5k6a3_probe()
319 	sd = &sensor->subdev;  in s5k6a3_probe()
321 	sensor->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;  in s5k6a3_probe()
324 	sensor->format.code = s5k6a3_formats[0].code;  in s5k6a3_probe()
325 	sensor->format.width = S5K6A3_DEFAULT_WIDTH;  in s5k6a3_probe()
326 	sensor->format.height = S5K6A3_DEFAULT_HEIGHT;  in s5k6a3_probe()
329 	sensor->pad.flags = MEDIA_PAD_FL_SOURCE;  in s5k6a3_probe()
330 	ret = media_entity_pads_init(&sd->entity, 1, &sensor->pad);  in s5k6a3_probe()
381 MODULE_DESCRIPTION("S5K6A3 image sensor subdev driver");