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20ea6adbf1
Build system: x86_64 Build-tested: bcm2708, bcm2709, bcm2710, bcm2711 Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B Signed-off-by: Marty Jones <mj8263788@gmail.com> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
109 lines
3.8 KiB
Diff
109 lines
3.8 KiB
Diff
From 7760958a0fb50b0e20f88e220f55798ec154c41e Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.com>
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Date: Sat, 8 Jan 2022 13:24:10 +0000
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Subject: [PATCH] drm/vc4: Add alpha_blend_mode property to each plane.
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Move from only supporting the default of pre-multiplied
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alpha to supporting user specified blend mode using the
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standardised property.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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---
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drivers/gpu/drm/vc4/vc4_plane.c | 62 ++++++++++++++++++++++++++-------
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1 file changed, 49 insertions(+), 13 deletions(-)
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--- a/drivers/gpu/drm/vc4/vc4_plane.c
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+++ b/drivers/gpu/drm/vc4/vc4_plane.c
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@@ -663,6 +663,48 @@ static const u32 colorspace_coeffs[2][DR
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}
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};
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+static u32 vc4_hvs4_get_alpha_blend_mode(struct drm_plane_state *state)
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+{
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+ if (!state->fb->format->has_alpha)
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+ return VC4_SET_FIELD(SCALER_POS2_ALPHA_MODE_FIXED,
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+ SCALER_POS2_ALPHA_MODE);
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+
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+ switch (state->pixel_blend_mode) {
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+ case DRM_MODE_BLEND_PIXEL_NONE:
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+ return VC4_SET_FIELD(SCALER_POS2_ALPHA_MODE_FIXED,
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+ SCALER_POS2_ALPHA_MODE);
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+ default:
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+ case DRM_MODE_BLEND_PREMULTI:
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+ return VC4_SET_FIELD(SCALER_POS2_ALPHA_MODE_PIPELINE,
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+ SCALER_POS2_ALPHA_MODE) |
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+ SCALER_POS2_ALPHA_PREMULT;
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+ case DRM_MODE_BLEND_COVERAGE:
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+ return VC4_SET_FIELD(SCALER_POS2_ALPHA_MODE_PIPELINE,
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+ SCALER_POS2_ALPHA_MODE);
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+ }
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+}
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+
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+static u32 vc4_hvs5_get_alpha_blend_mode(struct drm_plane_state *state)
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+{
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+ if (!state->fb->format->has_alpha)
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+ return VC4_SET_FIELD(SCALER5_CTL2_ALPHA_MODE_FIXED,
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+ SCALER5_CTL2_ALPHA_MODE);
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+
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+ switch (state->pixel_blend_mode) {
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+ case DRM_MODE_BLEND_PIXEL_NONE:
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+ return VC4_SET_FIELD(SCALER5_CTL2_ALPHA_MODE_FIXED,
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+ SCALER5_CTL2_ALPHA_MODE);
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+ default:
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+ case DRM_MODE_BLEND_PREMULTI:
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+ return VC4_SET_FIELD(SCALER5_CTL2_ALPHA_MODE_PIPELINE,
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+ SCALER5_CTL2_ALPHA_MODE) |
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+ SCALER5_CTL2_ALPHA_PREMULT;
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+ case DRM_MODE_BLEND_COVERAGE:
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+ return VC4_SET_FIELD(SCALER5_CTL2_ALPHA_MODE_PIPELINE,
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+ SCALER5_CTL2_ALPHA_MODE);
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+ }
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+}
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+
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/* Writes out a full display list for an active plane to the plane's
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* private dlist state.
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*/
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@@ -945,13 +987,8 @@ static int vc4_plane_mode_set(struct drm
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/* Position Word 2: Source Image Size, Alpha */
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vc4_state->pos2_offset = vc4_state->dlist_count;
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vc4_dlist_write(vc4_state,
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- VC4_SET_FIELD(fb->format->has_alpha ?
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- SCALER_POS2_ALPHA_MODE_PIPELINE :
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- SCALER_POS2_ALPHA_MODE_FIXED,
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- SCALER_POS2_ALPHA_MODE) |
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(mix_plane_alpha ? SCALER_POS2_ALPHA_MIX : 0) |
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- (fb->format->has_alpha ?
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- SCALER_POS2_ALPHA_PREMULT : 0) |
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+ vc4_hvs4_get_alpha_blend_mode(state) |
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VC4_SET_FIELD(vc4_state->src_w[0],
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SCALER_POS2_WIDTH) |
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VC4_SET_FIELD(vc4_state->src_h[0],
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@@ -996,14 +1033,9 @@ static int vc4_plane_mode_set(struct drm
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vc4_dlist_write(vc4_state,
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VC4_SET_FIELD(state->alpha >> 4,
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SCALER5_CTL2_ALPHA) |
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- (fb->format->has_alpha ?
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- SCALER5_CTL2_ALPHA_PREMULT : 0) |
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+ vc4_hvs5_get_alpha_blend_mode(state) |
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(mix_plane_alpha ?
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- SCALER5_CTL2_ALPHA_MIX : 0) |
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- VC4_SET_FIELD(fb->format->has_alpha ?
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- SCALER5_CTL2_ALPHA_MODE_PIPELINE :
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- SCALER5_CTL2_ALPHA_MODE_FIXED,
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- SCALER5_CTL2_ALPHA_MODE)
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+ SCALER5_CTL2_ALPHA_MIX : 0)
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);
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/* Position Word 1: Scaled Image Dimensions. */
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@@ -1493,6 +1525,10 @@ struct drm_plane *vc4_plane_init(struct
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drm_plane_helper_add(plane, &vc4_plane_helper_funcs);
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drm_plane_create_alpha_property(plane);
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+ drm_plane_create_blend_mode_property(plane,
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+ BIT(DRM_MODE_BLEND_PIXEL_NONE) |
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+ BIT(DRM_MODE_BLEND_PREMULTI) |
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+ BIT(DRM_MODE_BLEND_COVERAGE));
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drm_plane_create_rotation_property(plane, DRM_MODE_ROTATE_0,
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DRM_MODE_ROTATE_0 |
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DRM_MODE_ROTATE_180 |
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