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
130 		return sd_state ? v4l2_subdev_get_try_format(&sensor->subdev,  in __s5k6a3_get_format()
133 	return &sensor->format;  in __s5k6a3_get_format()
140 	struct s5k6a3 *sensor = sd_to_s5k6a3(sd);  in s5k6a3_set_fmt()  local
145 	mf = __s5k6a3_get_format(sensor, sd_state, fmt->pad, fmt->which);  in s5k6a3_set_fmt()
147 		mutex_lock(&sensor->lock);  in s5k6a3_set_fmt()
149 		mutex_unlock(&sensor->lock);  in s5k6a3_set_fmt()
158 	struct s5k6a3 *sensor = sd_to_s5k6a3(sd);  in s5k6a3_get_fmt()  local
161 	mf = __s5k6a3_get_format(sensor, sd_state, fmt->pad, fmt->which);  in s5k6a3_get_fmt()
163 	mutex_lock(&sensor->lock);  in s5k6a3_get_fmt()
165 	mutex_unlock(&sensor->lock);  in s5k6a3_get_fmt()
192 static int __s5k6a3_power_on(struct s5k6a3 *sensor)  in __s5k6a3_power_on()  argument
197 	ret = clk_set_rate(sensor->clock, sensor->clock_frequency);  in __s5k6a3_power_on()
201 	ret = pm_runtime_get(sensor->dev);  in __s5k6a3_power_on()
205 	ret = regulator_enable(sensor->supplies[i].consumer);  in __s5k6a3_power_on()
209 	ret = clk_prepare_enable(sensor->clock);  in __s5k6a3_power_on()
214 		ret = regulator_enable(sensor->supplies[i].consumer);  in __s5k6a3_power_on()
219 	gpio_set_value(sensor->gpio_reset, 1);  in __s5k6a3_power_on()
221 	gpio_set_value(sensor->gpio_reset, 0);  in __s5k6a3_power_on()
223 	gpio_set_value(sensor->gpio_reset, 1);  in __s5k6a3_power_on()
225 	/* Delay needed for the sensor initialization */  in __s5k6a3_power_on()
230 	clk_disable_unprepare(sensor->clock);  in __s5k6a3_power_on()
233 		regulator_disable(sensor->supplies[i].consumer);  in __s5k6a3_power_on()
235 	pm_runtime_put(sensor->dev);  in __s5k6a3_power_on()
239 static int __s5k6a3_power_off(struct s5k6a3 *sensor)  in __s5k6a3_power_off()  argument
243 	gpio_set_value(sensor->gpio_reset, 0);  in __s5k6a3_power_off()
246 		regulator_disable(sensor->supplies[i].consumer);  in __s5k6a3_power_off()
248 	clk_disable_unprepare(sensor->clock);  in __s5k6a3_power_off()
249 	pm_runtime_put(sensor->dev);  in __s5k6a3_power_off()
255 	struct s5k6a3 *sensor = sd_to_s5k6a3(sd);  in s5k6a3_s_power()  local
258 	mutex_lock(&sensor->lock);  in s5k6a3_s_power()
260 	if (sensor->power_count == !on) {  in s5k6a3_s_power()
262 			ret = __s5k6a3_power_on(sensor);  in s5k6a3_s_power()
264 			ret = __s5k6a3_power_off(sensor);  in s5k6a3_s_power()
267 			sensor->power_count += on ? 1 : -1;  in s5k6a3_s_power()
270 	mutex_unlock(&sensor->lock);  in s5k6a3_s_power()
286 	struct s5k6a3 *sensor;  in s5k6a3_probe()  local
290 	sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);  in s5k6a3_probe()
291 	if (!sensor)  in s5k6a3_probe()
294 	mutex_init(&sensor->lock);  in s5k6a3_probe()
295 	sensor->gpio_reset = -EINVAL;  in s5k6a3_probe()
296 	sensor->clock = ERR_PTR(-EINVAL);  in s5k6a3_probe()
297 	sensor->dev = dev;  in s5k6a3_probe()
299 	sensor->clock = devm_clk_get(sensor->dev, S5K6A3_CLK_NAME);  in s5k6a3_probe()
300 	if (IS_ERR(sensor->clock))  in s5k6a3_probe()
301 		return PTR_ERR(sensor->clock);  in s5k6a3_probe()
312 	sensor->gpio_reset = gpio;  in s5k6a3_probe()
315 				 &sensor->clock_frequency)) {  in s5k6a3_probe()
316 		sensor->clock_frequency = S5K6A3_DEFAULT_CLK_FREQ;  in s5k6a3_probe()
318 					sensor->clock_frequency);  in s5k6a3_probe()
322 		sensor->supplies[i].supply = s5k6a3_supply_names[i];  in s5k6a3_probe()
325 				      sensor->supplies);  in s5k6a3_probe()
329 	sd = &sensor->subdev;  in s5k6a3_probe()
331 	sensor->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;  in s5k6a3_probe()
334 	sensor->format.code = s5k6a3_formats[0].code;  in s5k6a3_probe()
335 	sensor->format.width = S5K6A3_DEFAULT_WIDTH;  in s5k6a3_probe()
336 	sensor->format.height = S5K6A3_DEFAULT_HEIGHT;  in s5k6a3_probe()
339 	sensor->pad.flags = MEDIA_PAD_FL_SOURCE;  in s5k6a3_probe()
340 	ret = media_entity_pads_init(&sd->entity, 1, &sensor->pad);  in s5k6a3_probe()
391 MODULE_DESCRIPTION("S5K6A3 image sensor subdev driver");