4  * General device driver for TI lm3559, lm3560, FLASH LED Driver
68 static int lm3560_mode_ctrl(struct lm3560_flash *flash)  in lm3560_mode_ctrl()  argument
72 	switch (flash->led_mode) {  in lm3560_mode_ctrl()
74 		rval = regmap_update_bits(flash->regmap,  in lm3560_mode_ctrl()
78 		rval = regmap_update_bits(flash->regmap,  in lm3560_mode_ctrl()
82 		rval = regmap_update_bits(flash->regmap,  in lm3560_mode_ctrl()
90 static int lm3560_enable_ctrl(struct lm3560_flash *flash,  in lm3560_enable_ctrl()  argument
97 			rval = regmap_update_bits(flash->regmap,  in lm3560_enable_ctrl()
100 			rval = regmap_update_bits(flash->regmap,  in lm3560_enable_ctrl()
104 			rval = regmap_update_bits(flash->regmap,  in lm3560_enable_ctrl()
107 			rval = regmap_update_bits(flash->regmap,  in lm3560_enable_ctrl()
114 static int lm3560_torch_brt_ctrl(struct lm3560_flash *flash,  in lm3560_torch_brt_ctrl()  argument
121 		return lm3560_enable_ctrl(flash, led_no, false);  in lm3560_torch_brt_ctrl()
123 		rval = lm3560_enable_ctrl(flash, led_no, true);  in lm3560_torch_brt_ctrl()
127 		rval = regmap_update_bits(flash->regmap,  in lm3560_torch_brt_ctrl()
130 		rval = regmap_update_bits(flash->regmap,  in lm3560_torch_brt_ctrl()
137 static int lm3560_flash_brt_ctrl(struct lm3560_flash *flash,  in lm3560_flash_brt_ctrl()  argument
144 		return lm3560_enable_ctrl(flash, led_no, false);  in lm3560_flash_brt_ctrl()
146 		rval = lm3560_enable_ctrl(flash, led_no, true);  in lm3560_flash_brt_ctrl()
150 		rval = regmap_update_bits(flash->regmap,  in lm3560_flash_brt_ctrl()
153 		rval = regmap_update_bits(flash->regmap,  in lm3560_flash_brt_ctrl()
162 	struct lm3560_flash *flash = to_lm3560_flash(ctrl, led_no);  in lm3560_get_ctrl()  local
165 	mutex_lock(&flash->lock);  in lm3560_get_ctrl()
170 		rval = regmap_read(flash->regmap, REG_FLAG, &reg_val);  in lm3560_get_ctrl()
183 	mutex_unlock(&flash->lock);  in lm3560_get_ctrl()
189 	struct lm3560_flash *flash = to_lm3560_flash(ctrl, led_no);  in lm3560_set_ctrl()  local
193 	mutex_lock(&flash->lock);  in lm3560_set_ctrl()
197 		flash->led_mode = ctrl->val;  in lm3560_set_ctrl()
198 		if (flash->led_mode != V4L2_FLASH_LED_MODE_FLASH)  in lm3560_set_ctrl()
199 			rval = lm3560_mode_ctrl(flash);  in lm3560_set_ctrl()
203 		rval = regmap_update_bits(flash->regmap,  in lm3560_set_ctrl()
210 		if (flash->led_mode != V4L2_FLASH_LED_MODE_FLASH) {  in lm3560_set_ctrl()
214 		flash->led_mode = V4L2_FLASH_LED_MODE_FLASH;  in lm3560_set_ctrl()
215 		rval = lm3560_mode_ctrl(flash);  in lm3560_set_ctrl()
219 		if (flash->led_mode != V4L2_FLASH_LED_MODE_FLASH) {  in lm3560_set_ctrl()
223 		flash->led_mode = V4L2_FLASH_LED_MODE_NONE;  in lm3560_set_ctrl()
224 		rval = lm3560_mode_ctrl(flash);  in lm3560_set_ctrl()
229 		rval = regmap_update_bits(flash->regmap,  in lm3560_set_ctrl()
234 		rval = lm3560_flash_brt_ctrl(flash, led_no, ctrl->val);  in lm3560_set_ctrl()
238 		rval = lm3560_torch_brt_ctrl(flash, led_no, ctrl->val);  in lm3560_set_ctrl()
243 	mutex_unlock(&flash->lock);  in lm3560_set_ctrl()
278 static int lm3560_init_controls(struct lm3560_flash *flash,  in lm3560_init_controls()  argument
282 	u32 max_flash_brt = flash->pdata->max_flash_brt[led_no];  in lm3560_init_controls()
283 	u32 max_torch_brt = flash->pdata->max_torch_brt[led_no];  in lm3560_init_controls()
284 	struct v4l2_ctrl_handler *hdl = &flash->ctrls_led[led_no];  in lm3560_init_controls()
289 	/* flash mode */  in lm3560_init_controls()
293 	flash->led_mode = V4L2_FLASH_LED_MODE_NONE;  in lm3560_init_controls()
295 	/* flash source */  in lm3560_init_controls()
299 	/* flash strobe */  in lm3560_init_controls()
302 	/* flash strobe stop */  in lm3560_init_controls()
305 	/* flash strobe timeout */  in lm3560_init_controls()
308 			  flash->pdata->max_flash_timeout,  in lm3560_init_controls()
310 			  flash->pdata->max_flash_timeout);  in lm3560_init_controls()
312 	/* flash brt */  in lm3560_init_controls()
334 	flash->subdev_led[led_no].ctrl_handler = hdl;  in lm3560_init_controls()
349 static int lm3560_subdev_init(struct lm3560_flash *flash,  in lm3560_subdev_init()  argument
352 	struct i2c_client *client = to_i2c_client(flash->dev);  in lm3560_subdev_init()
355 	v4l2_i2c_subdev_init(&flash->subdev_led[led_no], client, &lm3560_ops);  in lm3560_subdev_init()
356 	flash->subdev_led[led_no].flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;  in lm3560_subdev_init()
357 	strscpy(flash->subdev_led[led_no].name, led_name,  in lm3560_subdev_init()
358 		sizeof(flash->subdev_led[led_no].name));  in lm3560_subdev_init()
359 	rval = lm3560_init_controls(flash, led_no);  in lm3560_subdev_init()
362 	rval = media_entity_pads_init(&flash->subdev_led[led_no].entity, 0, NULL);  in lm3560_subdev_init()
365 	flash->subdev_led[led_no].entity.function = MEDIA_ENT_F_FLASH;  in lm3560_subdev_init()
370 	v4l2_ctrl_handler_free(&flash->ctrls_led[led_no]);  in lm3560_subdev_init()
374 static int lm3560_init_device(struct lm3560_flash *flash)  in lm3560_init_device()  argument
380 	rval = regmap_update_bits(flash->regmap,  in lm3560_init_device()
381 				  REG_FLASH_TOUT, 0x60, flash->pdata->peak);  in lm3560_init_device()
385 	flash->led_mode = V4L2_FLASH_LED_MODE_NONE;  in lm3560_init_device()
386 	rval = lm3560_mode_ctrl(flash);  in lm3560_init_device()
390 	rval = regmap_read(flash->regmap, REG_FLAG, &reg_val);  in lm3560_init_device()
396 	struct lm3560_flash *flash;  in lm3560_probe()  local
400 	flash = devm_kzalloc(&client->dev, sizeof(*flash), GFP_KERNEL);  in lm3560_probe()
401 	if (flash == NULL)  in lm3560_probe()
404 	flash->regmap = devm_regmap_init_i2c(client, &lm3560_regmap);  in lm3560_probe()
405 	if (IS_ERR(flash->regmap)) {  in lm3560_probe()
406 		rval = PTR_ERR(flash->regmap);  in lm3560_probe()
424 	flash->pdata = pdata;  in lm3560_probe()
425 	flash->dev = &client->dev;  in lm3560_probe()
426 	mutex_init(&flash->lock);  in lm3560_probe()
428 	rval = lm3560_subdev_init(flash, LM3560_LED0, "lm3560-led0");  in lm3560_probe()
432 	rval = lm3560_subdev_init(flash, LM3560_LED1, "lm3560-led1");  in lm3560_probe()
436 	rval = lm3560_init_device(flash);  in lm3560_probe()
440 	i2c_set_clientdata(client, flash);  in lm3560_probe()
447 	struct lm3560_flash *flash = i2c_get_clientdata(client);  in lm3560_remove()  local
451 		v4l2_device_unregister_subdev(&flash->subdev_led[i]);  in lm3560_remove()
452 		v4l2_ctrl_handler_free(&flash->ctrls_led[i]);  in lm3560_remove()
453 		media_entity_cleanup(&flash->subdev_led[i].entity);  in lm3560_remove()
479 MODULE_DESCRIPTION("Texas Instruments LM3560 LED flash driver");