135 static inline struct tw2804 *to_state_from_ctrl(struct v4l2_ctrl *ctrl)  in to_state_from_ctrl()  argument
137 	return container_of(ctrl->handler, struct tw2804, hdl);  in to_state_from_ctrl()
164 static int tw2804_g_volatile_ctrl(struct v4l2_ctrl *ctrl)  in tw2804_g_volatile_ctrl()  argument
166 	struct tw2804 *state = to_state_from_ctrl(ctrl);  in tw2804_g_volatile_ctrl()
169 	switch (ctrl->id) {  in tw2804_g_volatile_ctrl()
171 		ctrl->val = read_reg(client, TW2804_REG_GAIN, 0);  in tw2804_g_volatile_ctrl()
175 		ctrl->val = read_reg(client, TW2804_REG_CHROMA_GAIN, 0);  in tw2804_g_volatile_ctrl()
179 		ctrl->val = read_reg(client, TW2804_REG_BLUE_BALANCE, 0);  in tw2804_g_volatile_ctrl()
183 		ctrl->val = read_reg(client, TW2804_REG_RED_BALANCE, 0);  in tw2804_g_volatile_ctrl()
189 static int tw2804_s_ctrl(struct v4l2_ctrl *ctrl)  in tw2804_s_ctrl()  argument
191 	struct tw2804 *state = to_state_from_ctrl(ctrl);  in tw2804_s_ctrl()
196 	switch (ctrl->id) {  in tw2804_s_ctrl()
202 		if (ctrl->val == 0)  in tw2804_s_ctrl()
213 		reg = (reg & ~(0x03)) | (ctrl->val == 0 ? 0x02 : 0x03);  in tw2804_s_ctrl()
217 		return write_reg(client, TW2804_REG_GAIN, ctrl->val, 0);  in tw2804_s_ctrl()
220 		return write_reg(client, TW2804_REG_CHROMA_GAIN, ctrl->val, 0);  in tw2804_s_ctrl()
223 		return write_reg(client, TW2804_REG_BLUE_BALANCE, ctrl->val, 0);  in tw2804_s_ctrl()
226 		return write_reg(client, TW2804_REG_RED_BALANCE, ctrl->val, 0);  in tw2804_s_ctrl()
230 				ctrl->val, state->channel);  in tw2804_s_ctrl()
234 				ctrl->val, state->channel);  in tw2804_s_ctrl()
238 				ctrl->val, state->channel);  in tw2804_s_ctrl()
242 				ctrl->val, state->channel);  in tw2804_s_ctrl()
351 	struct v4l2_ctrl *ctrl;  in tw2804_probe()  local
378 	ctrl = v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops,  in tw2804_probe()
380 	if (ctrl)  in tw2804_probe()
381 		ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;  in tw2804_probe()
382 	ctrl = v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops,  in tw2804_probe()
384 	if (ctrl)  in tw2804_probe()
385 		ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;  in tw2804_probe()
386 	ctrl = v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops,  in tw2804_probe()
388 	if (ctrl)  in tw2804_probe()
389 		ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;  in tw2804_probe()
390 	ctrl = v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops,  in tw2804_probe()
392 	if (ctrl)  in tw2804_probe()
393 		ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;  in tw2804_probe()