[media] tvp514x: use the control framework

Signed-off-by: Hans Verkuil <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/video/tvp514x.c

···
 #include <media/v4l2-common.h>
 #include <media/v4l2-mediabus.h>
 #include <media/v4l2-chip-ident.h>
+#include <media/v4l2-ctrls.h>
 #include <media/tvp514x.h>
 
 #include "tvp514x_regs.h"
···
  */
 struct tvp514x_decoder {
 	struct v4l2_subdev sd;
+	struct v4l2_ctrl_handler hdl;
 	struct tvp514x_reg tvp514x_regs[ARRAY_SIZE(tvp514x_reg_list_default)];
 	const struct tvp514x_platform_data *pdata;
 
···
 static inline struct tvp514x_decoder *to_decoder(struct v4l2_subdev *sd)
 {
 	return container_of(sd, struct tvp514x_decoder, sd);
+}
+
+static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
+{
+	return &container_of(ctrl->handler, struct tvp514x_decoder, hdl)->sd;
 }
 
 
···
 }
 
 /**
- * tvp514x_queryctrl() - V4L2 decoder interface handler for queryctrl
- * @sd: pointer to standard V4L2 sub-device structure
- * @qctrl: standard V4L2 v4l2_queryctrl structure
- *
- * If the requested control is supported, returns the control information.
- * Otherwise, returns -EINVAL if the control is not supported.
- */
-static int
-tvp514x_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qctrl)
-{
-	int err = -EINVAL;
-
-	if (qctrl == NULL)
-		return err;
-
-	switch (qctrl->id) {
-	case V4L2_CID_BRIGHTNESS:
-		/* Brightness supported is (0-255), */
-		err = v4l2_ctrl_query_fill(qctrl, 0, 255, 1, 128);
-		break;
-	case V4L2_CID_CONTRAST:
-	case V4L2_CID_SATURATION:
-		/**
-		 * Saturation and Contrast supported is -
-		 *	Contrast: 0 - 255 (Default - 128)
-		 *	Saturation: 0 - 255 (Default - 128)
-		 */
-		err = v4l2_ctrl_query_fill(qctrl, 0, 255, 1, 128);
-		break;
-	case V4L2_CID_HUE:
-		/* Hue Supported is -
-		 *	Hue - -180 - +180 (Default - 0, Step - +180)
-		 */
-		err = v4l2_ctrl_query_fill(qctrl, -180, 180, 180, 0);
-		break;
-	case V4L2_CID_AUTOGAIN:
-		/**
-		 * Auto Gain supported is -
-		 * 	0 - 1 (Default - 1)
-		 */
-		err = v4l2_ctrl_query_fill(qctrl, 0, 1, 1, 1);
-		break;
-	default:
-		v4l2_err(sd, "invalid control id %d\n", qctrl->id);
-		return err;
-	}
-
-	v4l2_dbg(1, debug, sd, "Query Control:%s: Min - %d, Max - %d, Def - %d\n",
-			qctrl->name, qctrl->minimum, qctrl->maximum,
-			qctrl->default_value);
-
-	return err;
-}
-
-/**
- * tvp514x_g_ctrl() - V4L2 decoder interface handler for g_ctrl
- * @sd: pointer to standard V4L2 sub-device structure
- * @ctrl: pointer to v4l2_control structure
- *
- * If the requested control is supported, returns the control's current
- * value from the decoder. Otherwise, returns -EINVAL if the control is not
- * supported.
- */
-static int
-tvp514x_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
-{
-	struct tvp514x_decoder *decoder = to_decoder(sd);
-
-	if (ctrl == NULL)
-		return -EINVAL;
-
-	switch (ctrl->id) {
-	case V4L2_CID_BRIGHTNESS:
-		ctrl->value = decoder->tvp514x_regs[REG_BRIGHTNESS].val;
-		break;
-	case V4L2_CID_CONTRAST:
-		ctrl->value = decoder->tvp514x_regs[REG_CONTRAST].val;
-		break;
-	case V4L2_CID_SATURATION:
-		ctrl->value = decoder->tvp514x_regs[REG_SATURATION].val;
-		break;
-	case V4L2_CID_HUE:
-		ctrl->value = decoder->tvp514x_regs[REG_HUE].val;
-		if (ctrl->value == 0x7F)
-			ctrl->value = 180;
-		else if (ctrl->value == 0x80)
-			ctrl->value = -180;
-		else
-			ctrl->value = 0;
-
-		break;
-	case V4L2_CID_AUTOGAIN:
-		ctrl->value = decoder->tvp514x_regs[REG_AFE_GAIN_CTRL].val;
-		if ((ctrl->value & 0x3) == 3)
-			ctrl->value = 1;
-		else
-			ctrl->value = 0;
-
-		break;
-	default:
-		v4l2_err(sd, "invalid control id %d\n", ctrl->id);
-		return -EINVAL;
-	}
-
-	v4l2_dbg(1, debug, sd, "Get Control: ID - %d - %d\n",
-			ctrl->id, ctrl->value);
-	return 0;
-}
-
-/**
  * tvp514x_s_ctrl() - V4L2 decoder interface handler for s_ctrl
- * @sd: pointer to standard V4L2 sub-device structure
- * @ctrl: pointer to v4l2_control structure
+ * @ctrl: pointer to v4l2_ctrl structure
  *
  * If the requested control is supported, sets the control's current
  * value in HW. Otherwise, returns -EINVAL if the control is not supported.
  */
-static int
-tvp514x_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+static int tvp514x_s_ctrl(struct v4l2_ctrl *ctrl)
 {
+	struct v4l2_subdev *sd = to_sd(ctrl);
 	struct tvp514x_decoder *decoder = to_decoder(sd);
 	int err = -EINVAL, value;
 
-	if (ctrl == NULL)
-		return err;
-
-	value = ctrl->value;
+	value = ctrl->val;
 
 	switch (ctrl->id) {
 	case V4L2_CID_BRIGHTNESS:
-		if (ctrl->value < 0 || ctrl->value > 255) {
-			v4l2_err(sd, "invalid brightness setting %d\n",
-					ctrl->value);
-			return -ERANGE;
-		}
-		err = tvp514x_write_reg(sd, REG_BRIGHTNESS,
-				value);
-		if (err)
-			return err;
-
-		decoder->tvp514x_regs[REG_BRIGHTNESS].val = value;
+		err = tvp514x_write_reg(sd, REG_BRIGHTNESS, value);
+		if (!err)
+			decoder->tvp514x_regs[REG_BRIGHTNESS].val = value;
 		break;
 	case V4L2_CID_CONTRAST:
-		if (ctrl->value < 0 || ctrl->value > 255) {
-			v4l2_err(sd, "invalid contrast setting %d\n",
-					ctrl->value);
-			return -ERANGE;
-		}
 		err = tvp514x_write_reg(sd, REG_CONTRAST, value);
-		if (err)
-			return err;
-
-		decoder->tvp514x_regs[REG_CONTRAST].val = value;
+		if (!err)
+			decoder->tvp514x_regs[REG_CONTRAST].val = value;
 		break;
 	case V4L2_CID_SATURATION:
-		if (ctrl->value < 0 || ctrl->value > 255) {
-			v4l2_err(sd, "invalid saturation setting %d\n",
-					ctrl->value);
-			return -ERANGE;
-		}
 		err = tvp514x_write_reg(sd, REG_SATURATION, value);
-		if (err)
-			return err;
-
-		decoder->tvp514x_regs[REG_SATURATION].val = value;
+		if (!err)
+			decoder->tvp514x_regs[REG_SATURATION].val = value;
 		break;
 	case V4L2_CID_HUE:
 		if (value == 180)
 			value = 0x7F;
 		else if (value == -180)
 			value = 0x80;
-		else if (value == 0)
-			value = 0;
-		else {
-			v4l2_err(sd, "invalid hue setting %d\n", ctrl->value);
-			return -ERANGE;
-		}
 		err = tvp514x_write_reg(sd, REG_HUE, value);
-		if (err)
-			return err;
-
-		decoder->tvp514x_regs[REG_HUE].val = value;
+		if (!err)
+			decoder->tvp514x_regs[REG_HUE].val = value;
 		break;
 	case V4L2_CID_AUTOGAIN:
-		if (value == 1)
-			value = 0x0F;
-		else if (value == 0)
-			value = 0x0C;
-		else {
-			v4l2_err(sd, "invalid auto gain setting %d\n",
-					ctrl->value);
-			return -ERANGE;
-		}
-		err = tvp514x_write_reg(sd, REG_AFE_GAIN_CTRL, value);
-		if (err)
-			return err;
-
-		decoder->tvp514x_regs[REG_AFE_GAIN_CTRL].val = value;
+		err = tvp514x_write_reg(sd, REG_AFE_GAIN_CTRL, value ? 0x0f : 0x0c);
+		if (!err)
+			decoder->tvp514x_regs[REG_AFE_GAIN_CTRL].val = value;
 		break;
-	default:
-		v4l2_err(sd, "invalid control id %d\n", ctrl->id);
-		return err;
 	}
 
 	v4l2_dbg(1, debug, sd, "Set Control: ID - %d - %d\n",
-			ctrl->id, ctrl->value);
-
+			ctrl->id, ctrl->val);
 	return err;
 }
 
···
 	return err;
 }
 
-static const struct v4l2_subdev_core_ops tvp514x_core_ops = {
-	.queryctrl = tvp514x_queryctrl,
-	.g_ctrl = tvp514x_g_ctrl,
+static const struct v4l2_ctrl_ops tvp514x_ctrl_ops = {
 	.s_ctrl = tvp514x_s_ctrl,
+};
+
+static const struct v4l2_subdev_core_ops tvp514x_core_ops = {
+	.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
+	.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
+	.s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
+	.g_ctrl = v4l2_subdev_g_ctrl,
+	.s_ctrl = v4l2_subdev_s_ctrl,
+	.queryctrl = v4l2_subdev_queryctrl,
+	.querymenu = v4l2_subdev_querymenu,
 	.s_std = tvp514x_s_std,
 };
 
···
 	sd = &decoder->sd;
 	v4l2_i2c_subdev_init(sd, client, &tvp514x_ops);
 
+	v4l2_ctrl_handler_init(&decoder->hdl, 5);
+	v4l2_ctrl_new_std(&decoder->hdl, &tvp514x_ctrl_ops,
+		V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
+	v4l2_ctrl_new_std(&decoder->hdl, &tvp514x_ctrl_ops,
+		V4L2_CID_CONTRAST, 0, 255, 1, 128);
+	v4l2_ctrl_new_std(&decoder->hdl, &tvp514x_ctrl_ops,
+		V4L2_CID_SATURATION, 0, 255, 1, 128);
+	v4l2_ctrl_new_std(&decoder->hdl, &tvp514x_ctrl_ops,
+		V4L2_CID_HUE, -180, 180, 180, 0);
+	v4l2_ctrl_new_std(&decoder->hdl, &tvp514x_ctrl_ops,
+		V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
+	sd->ctrl_handler = &decoder->hdl;
+	if (decoder->hdl.error) {
+		int err = decoder->hdl.error;
+
+		v4l2_ctrl_handler_free(&decoder->hdl);
+		kfree(decoder);
+		return err;
+	}
+	v4l2_ctrl_handler_setup(&decoder->hdl);
+
 	v4l2_info(sd, "%s decoder driver registered !!\n", sd->name);
 
 	return 0;
···
 	struct tvp514x_decoder *decoder = to_decoder(sd);
 
 	v4l2_device_unregister_subdev(sd);
+	v4l2_ctrl_handler_free(&decoder->hdl);
 	kfree(decoder);
 	return 0;
 }