[media] v4l: vsp1: rwpf: Support runtime modification of controls

Allow reconfiguration of the alpha value at runtime.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/platform/vsp1/vsp1_rpf.c

@@ -73,8 +73,15 @@ static void rpf_configure(struct vsp1_entity *entity,
 	u32 pstride;
 	u32 infmt;
 
-	if (!full)
+	if (!full) {
+		vsp1_rpf_write(rpf, dl, VI6_RPF_VRTCOL_SET,
+			       rpf->alpha << VI6_RPF_VRTCOL_SET_LAYA_SHIFT);
+		vsp1_rpf_write(rpf, dl, VI6_RPF_MULT_ALPHA, rpf->mult_alpha |
+			       (rpf->alpha << VI6_RPF_MULT_ALPHA_RATIO_SHIFT));
+
+		vsp1_pipeline_propagate_alpha(pipe, dl, rpf->alpha);
 		return;
+	}
 
 	/* Source size, stride and crop offsets.
 	 *
@@ -171,9 +178,6 @@ static void rpf_configure(struct vsp1_entity *entity,
 		       (fmtinfo->alpha ? VI6_RPF_ALPH_SEL_ASEL_PACKED
 				       : VI6_RPF_ALPH_SEL_ASEL_FIXED));
 
-	vsp1_rpf_write(rpf, dl, VI6_RPF_VRTCOL_SET,
-		       rpf->alpha << VI6_RPF_VRTCOL_SET_LAYA_SHIFT);
-
 	if (entity->vsp1->info->gen == 3) {
 		u32 mult;
 
@@ -191,8 +195,7 @@ static void rpf_configure(struct vsp1_entity *entity,
 			mult = VI6_RPF_MULT_ALPHA_A_MMD_RATIO
 			     | (premultiplied ?
 				VI6_RPF_MULT_ALPHA_P_MMD_RATIO :
-				VI6_RPF_MULT_ALPHA_P_MMD_NONE)
-			     | (rpf->alpha << VI6_RPF_MULT_ALPHA_RATIO_SHIFT);
+				VI6_RPF_MULT_ALPHA_P_MMD_NONE);
 		} else {
 			/* When the input doesn't contain an alpha channel the
 			 * global alpha value is applied in the unpacking unit,
@@ -203,11 +206,9 @@ static void rpf_configure(struct vsp1_entity *entity,
 			     | VI6_RPF_MULT_ALPHA_P_MMD_NONE;
 		}
 
-		vsp1_rpf_write(rpf, dl, VI6_RPF_MULT_ALPHA, mult);
+		rpf->mult_alpha = mult;
 	}
 
-	vsp1_pipeline_propagate_alpha(pipe, dl, rpf->alpha);
-
 	vsp1_rpf_write(rpf, dl, VI6_RPF_MSK_CTRL, 0);
 	vsp1_rpf_write(rpf, dl, VI6_RPF_CKEY_CTRL, 0);
 
@@ -253,6 +254,8 @@ struct vsp1_rwpf *vsp1_rpf_create(struct vsp1_device *vsp1, unsigned int index)
 		goto error;
 	}
 
+	v4l2_ctrl_handler_setup(&rpf->ctrls);
+
 	return rpf;
 
 error:

drivers/media/platform/vsp1/vsp1_rwpf.c

@@ -243,8 +243,6 @@ static const struct v4l2_ctrl_ops vsp1_rwpf_ctrl_ops = {
 
 int vsp1_rwpf_init_ctrls(struct vsp1_rwpf *rwpf)
 {
-	rwpf->alpha = 255;
-
 	v4l2_ctrl_handler_init(&rwpf->ctrls, 1);
 	v4l2_ctrl_new_std(&rwpf->ctrls, &vsp1_rwpf_ctrl_ops,
 			  V4L2_CID_ALPHA_COMPONENT, 0, 255, 1, 255);

drivers/media/platform/vsp1/vsp1_rwpf.h

@@ -49,6 +49,9 @@ struct vsp1_rwpf {
 
 	unsigned int alpha;
 
+	u32 mult_alpha;
+	u32 outfmt;
+
 	unsigned int offsets[2];
 	struct vsp1_rwpf_memory mem;
 

drivers/media/platform/vsp1/vsp1_wpf.c

@@ -104,8 +104,11 @@ static void wpf_configure(struct vsp1_entity *entity,
 	u32 outfmt = 0;
 	u32 srcrpf = 0;
 
-	if (!full)
+	if (!full) {
+		vsp1_wpf_write(wpf, dl, VI6_WPF_OUTFMT, wpf->outfmt |
+			       (wpf->alpha << VI6_WPF_OUTFMT_PDV_SHIFT));
 		return;
+	}
 
 	/* Cropping */
 	crop = vsp1_rwpf_get_crop(wpf, wpf->entity.config);
@@ -151,8 +154,7 @@ static void wpf_configure(struct vsp1_entity *entity,
 	if (sink_format->code != source_format->code)
 		outfmt |= VI6_WPF_OUTFMT_CSC;
 
-	outfmt |= wpf->alpha << VI6_WPF_OUTFMT_PDV_SHIFT;
-	vsp1_wpf_write(wpf, dl, VI6_WPF_OUTFMT, outfmt);
+	wpf->outfmt = outfmt;
 
 	vsp1_dl_list_write(dl, VI6_DPR_WPF_FPORCH(wpf->entity.index),
 			   VI6_DPR_WPF_FPORCH_FP_WPFN);
@@ -239,6 +241,8 @@ struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index)
 		goto error;
 	}
 
+	v4l2_ctrl_handler_setup(&wpf->ctrls);
+
 	return wpf;
 
 error: