[media] s5p-mfc: Add QP setting support for vp8 encoder

Adds v4l2 controls to set MIN, MAX QP values and
I, P frame QP for vp8 encoder.

Signed-off-by: Kiran AVND <avnd.kiran@samsung.com>
Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

Documentation/DocBook/media/v4l/controls.xml

@@ -3161,6 +3161,38 @@ V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_REF_PERIOD as a golden frame.</entry>
 		</entrytbl>
 	      </row>
 
+	      <row><entry></entry></row>
+	      <row>
+		<entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_VPX_MIN_QP</constant></entry>
+		<entry>integer</entry>
+	      </row>
+	      <row><entry spanname="descr">Minimum quantization parameter for VP8.</entry>
+	      </row>
+
+	      <row><entry></entry></row>
+	      <row>
+		<entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_VPX_MAX_QP</constant></entry>
+		<entry>integer</entry>
+	      </row>
+	      <row><entry spanname="descr">Maximum quantization parameter for VP8.</entry>
+	      </row>
+
+	      <row><entry></entry></row>
+	      <row>
+		<entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_VPX_I_FRAME_QP</constant>&nbsp;</entry>
+		<entry>integer</entry>
+	      </row>
+	      <row><entry spanname="descr">Quantization parameter for an I frame for VP8.</entry>
+	      </row>
+
+	      <row><entry></entry></row>
+	      <row>
+		<entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_VPX_P_FRAME_QP</constant>&nbsp;</entry>
+		<entry>integer</entry>
+	      </row>
+	      <row><entry spanname="descr">Quantization parameter for a P frame for VP8.</entry>
+	      </row>
+
           <row><entry></entry></row>
         </tbody>
       </tgroup>

drivers/media/platform/s5p-mfc/s5p_mfc_common.h

@@ -422,6 +422,10 @@ struct s5p_mfc_vp8_enc_params {
 	enum v4l2_vp8_golden_frame_sel golden_frame_sel;
 	u8 hier_layer;
 	u8 hier_layer_qp[3];
+	u8 rc_min_qp;
+	u8 rc_max_qp;
+	u8 rc_frame_qp;
+	u8 rc_p_frame_qp;
 };
 
 /**

drivers/media/platform/s5p-mfc/s5p_mfc_enc.c

@@ -618,6 +618,38 @@ static struct mfc_control controls[] = {
 		.default_value = V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_USE_PREV,
 		.menu_skip_mask = 0,
 	},
+	{
+		.id = V4L2_CID_MPEG_VIDEO_VPX_MAX_QP,
+		.type = V4L2_CTRL_TYPE_INTEGER,
+		.minimum = 0,
+		.maximum = 127,
+		.step = 1,
+		.default_value = 127,
+	},
+	{
+		.id = V4L2_CID_MPEG_VIDEO_VPX_MIN_QP,
+		.type = V4L2_CTRL_TYPE_INTEGER,
+		.minimum = 0,
+		.maximum = 11,
+		.step = 1,
+		.default_value = 0,
+	},
+	{
+		.id = V4L2_CID_MPEG_VIDEO_VPX_I_FRAME_QP,
+		.type = V4L2_CTRL_TYPE_INTEGER,
+		.minimum = 0,
+		.maximum = 127,
+		.step = 1,
+		.default_value = 10,
+	},
+	{
+		.id = V4L2_CID_MPEG_VIDEO_VPX_P_FRAME_QP,
+		.type = V4L2_CTRL_TYPE_INTEGER,
+		.minimum = 0,
+		.maximum = 127,
+		.step = 1,
+		.default_value = 10,
+	},
 };
 
 #define NUM_CTRLS ARRAY_SIZE(controls)
@@ -1557,6 +1589,18 @@ static int s5p_mfc_enc_s_ctrl(struct v4l2_ctrl *ctrl)
 	case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL:
 		p->codec.vp8.golden_frame_sel = ctrl->val;
 		break;
+	case V4L2_CID_MPEG_VIDEO_VPX_MIN_QP:
+		p->codec.vp8.rc_min_qp = ctrl->val;
+		break;
+	case V4L2_CID_MPEG_VIDEO_VPX_MAX_QP:
+		p->codec.vp8.rc_max_qp = ctrl->val;
+		break;
+	case V4L2_CID_MPEG_VIDEO_VPX_I_FRAME_QP:
+		p->codec.vp8.rc_frame_qp = ctrl->val;
+		break;
+	case V4L2_CID_MPEG_VIDEO_VPX_P_FRAME_QP:
+		p->codec.vp8.rc_p_frame_qp = ctrl->val;
+		break;
 	default:
 		v4l2_err(&dev->v4l2_dev, "Invalid control, id=%d, val=%d\n",
 							ctrl->id, ctrl->val);

drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c

@@ -1218,6 +1218,26 @@ static int s5p_mfc_set_enc_params_vp8(struct s5p_mfc_ctx *ctx)
 		WRITEL(reg, S5P_FIMV_E_RC_FRAME_RATE_V6);
 	}
 
+	/* frame QP */
+	reg &= ~(0x7F);
+	reg |= p_vp8->rc_frame_qp & 0x7F;
+	WRITEL(reg, S5P_FIMV_E_RC_CONFIG_V6);
+
+	/* other QPs */
+	WRITEL(0x0, S5P_FIMV_E_FIXED_PICTURE_QP_V6);
+	if (!p->rc_frame && !p->rc_mb) {
+		reg = 0;
+		reg |= ((p_vp8->rc_p_frame_qp & 0x7F) << 8);
+		reg |= p_vp8->rc_frame_qp & 0x7F;
+		WRITEL(reg, S5P_FIMV_E_FIXED_PICTURE_QP_V6);
+	}
+
+	/* max QP */
+	reg = ((p_vp8->rc_max_qp & 0x7F) << 8);
+	/* min QP */
+	reg |= p_vp8->rc_min_qp & 0x7F;
+	WRITEL(reg, S5P_FIMV_E_RC_QP_BOUND_V6);
+
 	/* vbv buffer size */
 	if (p->frame_skip_mode ==
 			V4L2_MPEG_MFC51_VIDEO_FRAME_SKIP_MODE_BUF_LIMIT) {

drivers/media/v4l2-core/v4l2-ctrls.c

@@ -745,6 +745,10 @@ const char *v4l2_ctrl_get_name(u32 id)
 	case V4L2_CID_MPEG_VIDEO_VPX_FILTER_SHARPNESS:		return "VPX Deblocking Effect Control";
 	case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_REF_PERIOD:	return "VPX Golden Frame Refresh Period";
 	case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL:		return "VPX Golden Frame Indicator";
+	case V4L2_CID_MPEG_VIDEO_VPX_MIN_QP:			return "VPX Minimum QP Value";
+	case V4L2_CID_MPEG_VIDEO_VPX_MAX_QP:			return "VPX Maximum QP Value";
+	case V4L2_CID_MPEG_VIDEO_VPX_I_FRAME_QP:		return "VPX I-Frame QP Value";
+	case V4L2_CID_MPEG_VIDEO_VPX_P_FRAME_QP:		return "VPX P-Frame QP Value";
 
 	/* CAMERA controls */
 	/* Keep the order of the 'case's the same as in videodev2.h! */

include/uapi/linux/v4l2-controls.h

@@ -558,6 +558,10 @@ enum v4l2_vp8_golden_frame_sel {
 	V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_USE_PREV		= 0,
 	V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_USE_REF_PERIOD	= 1,
 };
+#define V4L2_CID_MPEG_VIDEO_VPX_MIN_QP			(V4L2_CID_MPEG_BASE+507)
+#define V4L2_CID_MPEG_VIDEO_VPX_MAX_QP			(V4L2_CID_MPEG_BASE+508)
+#define V4L2_CID_MPEG_VIDEO_VPX_I_FRAME_QP		(V4L2_CID_MPEG_BASE+509)
+#define V4L2_CID_MPEG_VIDEO_VPX_P_FRAME_QP		(V4L2_CID_MPEG_BASE+510)
 
 /*  MPEG-class control IDs specific to the CX2341x driver as defined by V4L2 */
 #define V4L2_CID_MPEG_CX2341X_BASE 				(V4L2_CTRL_CLASS_MPEG | 0x1000)