118 static int write_reg(struct i2c_client *client, u8 reg, u8 value, u8 channel)  in write_reg()  argument
120 	return i2c_smbus_write_byte_data(client, reg | (channel << 6), value);  in write_reg()
123 static int write_regs(struct i2c_client *client, const u8 *regs, u8 channel)  in write_regs()  argument
129 		ret = i2c_smbus_write_byte_data(client,  in write_regs()
137 static int read_reg(struct i2c_client *client, u8 reg, u8 channel)  in read_reg()  argument
139 	return i2c_smbus_read_byte_data(client, (reg) | (channel << 6));  in read_reg()
179 	struct i2c_client *client = v4l2_get_subdevdata(&state->sd);  in tw2804_g_volatile_ctrl()  local
183 		ctrl->val = read_reg(client, TW2804_REG_GAIN, 0);  in tw2804_g_volatile_ctrl()
187 		ctrl->val = read_reg(client, TW2804_REG_CHROMA_GAIN, 0);  in tw2804_g_volatile_ctrl()
191 		ctrl->val = read_reg(client, TW2804_REG_BLUE_BALANCE, 0);  in tw2804_g_volatile_ctrl()
195 		ctrl->val = read_reg(client, TW2804_REG_RED_BALANCE, 0);  in tw2804_g_volatile_ctrl()
204 	struct i2c_client *client = v4l2_get_subdevdata(&state->sd);  in tw2804_s_ctrl()  local
211 		reg = read_reg(client, addr, state->channel);  in tw2804_s_ctrl()
218 		return write_reg(client, addr, reg, state->channel);  in tw2804_s_ctrl()
222 		reg = read_reg(client, addr, state->channel);  in tw2804_s_ctrl()
226 		return write_reg(client, addr, reg, state->channel);  in tw2804_s_ctrl()
229 		return write_reg(client, TW2804_REG_GAIN, ctrl->val, 0);  in tw2804_s_ctrl()
232 		return write_reg(client, TW2804_REG_CHROMA_GAIN, ctrl->val, 0);  in tw2804_s_ctrl()
235 		return write_reg(client, TW2804_REG_BLUE_BALANCE, ctrl->val, 0);  in tw2804_s_ctrl()
238 		return write_reg(client, TW2804_REG_RED_BALANCE, ctrl->val, 0);  in tw2804_s_ctrl()
241 		return write_reg(client, TW2804_REG_BRIGHTNESS,  in tw2804_s_ctrl()
245 		return write_reg(client, TW2804_REG_CONTRAST,  in tw2804_s_ctrl()
249 		return write_reg(client, TW2804_REG_SATURATION,  in tw2804_s_ctrl()
253 		return write_reg(client, TW2804_REG_HUE,  in tw2804_s_ctrl()
265 	struct i2c_client *client = v4l2_get_subdevdata(sd);  in tw2804_s_std()  local
281 	write_regs(client, regs, dec->channel);  in tw2804_s_std()
290 	struct i2c_client *client = v4l2_get_subdevdata(sd);  in tw2804_s_video_routing()  local
295 			dev_err(&client->dev,  in tw2804_s_video_routing()
300 		dev_dbg(&client->dev, "initializing TW2804 channel %d\n",  in tw2804_s_video_routing()
303 				write_regs(client, global_registers, 0) < 0) {  in tw2804_s_video_routing()
304 			dev_err(&client->dev,  in tw2804_s_video_routing()
308 		if (write_regs(client, channel_registers, dec->channel) < 0) {  in tw2804_s_video_routing()
309 			dev_err(&client->dev,  in tw2804_s_video_routing()
322 	reg = read_reg(client, 0x22, dec->channel);  in tw2804_s_video_routing()
329 		reg = write_reg(client, 0x22, reg, dec->channel);  in tw2804_s_video_routing()
358 static int tw2804_probe(struct i2c_client *client,  in tw2804_probe()  argument
361 	struct i2c_adapter *adapter = client->adapter;  in tw2804_probe()
370 	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);  in tw2804_probe()
374 	v4l2_i2c_subdev_init(sd, client, &tw2804_ops);  in tw2804_probe()
414 	v4l_info(client, "chip found @ 0x%02x (%s)\n",  in tw2804_probe()
415 			client->addr << 1, client->adapter->name);  in tw2804_probe()
420 static int tw2804_remove(struct i2c_client *client)  in tw2804_remove()  argument
422 	struct v4l2_subdev *sd = i2c_get_clientdata(client);  in tw2804_remove()