From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Add support for the COLOR_ENCODING plane property which selects
the matrix coefficients used for the YCbCr->RGB conversion. Our
hardware can generally handle BT.601 and BT.709.
CHV pipe B sprites have a fully programmable matrix, so in theory
we could handle anything, but it doesn't seem all that useful to
expose anything beyond BT.601 and BT.709 at this time.
GLK can supposedly do BT.2020, but let's leave enabling that for
the future as well.
Cc: Jyri Sarha <jsarha@xxxxxx>
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_reg.h | 3 ++
drivers/gpu/drm/i915/intel_display.c | 19 +++++++++--
drivers/gpu/drm/i915/intel_sprite.c | 61 +++++++++++++++++++++++++++---------
3 files changed, 66 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index f4f51e7a3e83..bac3ec378b6e 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -5612,6 +5612,7 @@ enum {
#define DVS_PIPE_CSC_ENABLE (1<<24)
#define DVS_SOURCE_KEY (1<<22)
#define DVS_RGB_ORDER_XBGR (1<<20)
+#define DVS_YUV_CSC_FORMAT_BT709 (1<<18)
#define DVS_YUV_BYTE_ORDER_MASK (3<<16)
#define DVS_YUV_ORDER_YUYV (0<<16)
#define DVS_YUV_ORDER_UYVY (1<<16)
@@ -5758,6 +5759,7 @@ enum {
#define SP_FORMAT_RGBA8888 (0xf<<26)
#define SP_ALPHA_PREMULTIPLY (1<<23) /* CHV pipe B */
#define SP_SOURCE_KEY (1<<22)
+#define SP_YUV_CSC_FORMAT_BT709 (1<<18)
#define SP_YUV_BYTE_ORDER_MASK (3<<16)
#define SP_YUV_ORDER_YUYV (0<<16)
#define SP_YUV_ORDER_UYVY (1<<16)
@@ -5876,6 +5878,7 @@ enum {
#define PLANE_CTL_KEY_ENABLE_DESTINATION ( 2 << 21)
#define PLANE_CTL_ORDER_BGRX (0 << 20)
#define PLANE_CTL_ORDER_RGBX (1 << 20)
+#define PLANE_CTL_YUV_CSC_FORMAT_BT709 (1 << 18)
#define PLANE_CTL_YUV422_ORDER_MASK (0x3 << 16)
#define PLANE_CTL_YUV422_YUYV ( 0 << 16)
#define PLANE_CTL_YUV422_UYVY ( 1 << 16)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index e2aaaf60a969..810b53b0128c 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3321,6 +3321,9 @@ u32 skl_plane_ctl(const struct intel_crtc_state *crtc_state,
PLANE_CTL_PIPE_GAMMA_ENABLE |
PLANE_CTL_PIPE_CSC_ENABLE |
PLANE_CTL_PLANE_GAMMA_DISABLE;
+
+ if (plane_state->base.color_encoding == DRM_COLOR_YCBCR_BT709)
+ plane_ctl |= PLANE_CTL_YUV_CSC_FORMAT_BT709;
}
plane_ctl |= skl_plane_ctl_format(fb->format->format);
@@ -3344,8 +3347,12 @@ u32 glk_color_ctl(const struct intel_plane_state *plane_state)
PLANE_COLOR_PIPE_CSC_ENABLE |
PLANE_COLOR_PLANE_GAMMA_DISABLE;
- if (intel_format_is_yuv(fb->format->format))
- color_ctl |= PLANE_COLOR_CSC_MODE_YUV601_TO_RGB709;
+ if (intel_format_is_yuv(fb->format->format)) {
+ if (plane_state->base.color_encoding == DRM_COLOR_YCBCR_BT709)
+ color_ctl |= PLANE_COLOR_CSC_MODE_YUV709_TO_RGB709;
+ else
+ color_ctl |= PLANE_COLOR_CSC_MODE_YUV601_TO_RGB709;
+ }
return color_ctl;
}
@@ -13819,6 +13826,14 @@ intel_primary_plane_create(struct drm_i915_private *dev_priv, enum pipe pipe)
DRM_MODE_ROTATE_0,
supported_rotations);
+ if (INTEL_GEN(dev_priv) >= 9)
+ drm_plane_create_color_properties(&primary->base,
+ BIT(DRM_COLOR_YCBCR_BT601) |
+ BIT(DRM_COLOR_YCBCR_BT709),
+ BIT(DRM_COLOR_YCBCR_LIMITED_RANGE),
+ DRM_COLOR_YCBCR_BT601,
+ DRM_COLOR_YCBCR_LIMITED_RANGE);
+
drm_plane_helper_add(&primary->base, &intel_plane_helper_funcs);
return primary;
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index cc07157f2eb6..c21f43d64b00 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -328,30 +328,45 @@ chv_update_csc(const struct intel_plane_state *plane_state)
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
const struct drm_framebuffer *fb = plane_state->base.fb;
enum plane_id plane_id = plane->id;
+ /*
+ * |r| | c0 c1 c2 | |cr|
+ * |g| = | c3 c4 c5 | x |y |
+ * |b| | c6 c7 c8 | |cb|
+ *
+ * Coefficients are s3.12.
+ *
+ * Cb and Cr apparently come in as signed already, and
+ * we always get full range data in on account of CLRC0/1.
+ */
+ static const s16 csc_matrix[][9] = {
+ /* BT.601 full range YCbCr -> full range RGB */
+ [DRM_COLOR_YCBCR_BT601] = {
+ 5743, 4096, 0,
+ -2925, 4096, -1410,
+ 0, 4096, 7258,
+ },
+ /* BT.709 full range YCbCr -> full range RGB */
+ [DRM_COLOR_YCBCR_BT709] = {
+ 6450, 4096, 0,
+ -1917, 4096, -767,
+ 0, 4096, 7601,
+ },
+ };
+ const s16 *csc = csc_matrix[plane_state->base.color_encoding];
/* Seems RGB data bypasses the CSC always */
if (!intel_format_is_yuv(fb->format->format))
return;
- /*
- * BT.601 full range YCbCr -> full range RGB
- *
- * |r| | 5743 4096 0| |cr|
- * |g| = |-2925 4096 -1410| x |y |
- * |b| | 0 4096 7258| |cb|
- *
- * Cb and Cr apparently come in as signed already,
- * and we get full range data in on account of CLRC0/1
- */
I915_WRITE_FW(SPCSCYGOFF(plane_id), SPCSC_OOFF(0) | SPCSC_IOFF(0));
I915_WRITE_FW(SPCSCCBOFF(plane_id), SPCSC_OOFF(0) | SPCSC_IOFF(0));
I915_WRITE_FW(SPCSCCROFF(plane_id), SPCSC_OOFF(0) | SPCSC_IOFF(0));
- I915_WRITE_FW(SPCSCC01(plane_id), SPCSC_C1(4096) | SPCSC_C0(5743));
- I915_WRITE_FW(SPCSCC23(plane_id), SPCSC_C1(-2925) | SPCSC_C0(0));
- I915_WRITE_FW(SPCSCC45(plane_id), SPCSC_C1(-1410) | SPCSC_C0(4096));
- I915_WRITE_FW(SPCSCC67(plane_id), SPCSC_C1(4096) | SPCSC_C0(0));
- I915_WRITE_FW(SPCSCC8(plane_id), SPCSC_C0(7258));
+ I915_WRITE_FW(SPCSCC01(plane_id), SPCSC_C1(csc[1]) | SPCSC_C0(csc[0]));
+ I915_WRITE_FW(SPCSCC23(plane_id), SPCSC_C1(csc[3]) | SPCSC_C0(csc[2]));
+ I915_WRITE_FW(SPCSCC45(plane_id), SPCSC_C1(csc[5]) | SPCSC_C0(csc[4]));
+ I915_WRITE_FW(SPCSCC67(plane_id), SPCSC_C1(csc[7]) | SPCSC_C0(csc[6]));
+ I915_WRITE_FW(SPCSCC8(plane_id), SPCSC_C0(csc[8]));
I915_WRITE_FW(SPCSCYGICLAMP(plane_id), SPCSC_IMAX(1023) | SPCSC_IMIN(0));
I915_WRITE_FW(SPCSCCBICLAMP(plane_id), SPCSC_IMAX(512) | SPCSC_IMIN(-512));
@@ -445,6 +460,9 @@ static u32 vlv_sprite_ctl(const struct intel_crtc_state *crtc_state,
return 0;
}
+ if (plane_state->base.color_encoding == DRM_COLOR_YCBCR_BT709)
+ sprctl |= SP_YUV_CSC_FORMAT_BT709;
+
if (fb->modifier == I915_FORMAT_MOD_X_TILED)
sprctl |= SP_TILED;
@@ -578,6 +596,9 @@ static u32 ivb_sprite_ctl(const struct intel_crtc_state *crtc_state,
return 0;
}
+ if (plane_state->base.color_encoding == DRM_COLOR_YCBCR_BT709)
+ sprctl |= SPRITE_YUV_CSC_FORMAT_BT709;
+
if (fb->modifier == I915_FORMAT_MOD_X_TILED)
sprctl |= SPRITE_TILED;
@@ -715,6 +736,9 @@ static u32 g4x_sprite_ctl(const struct intel_crtc_state *crtc_state,
return 0;
}
+ if (plane_state->base.color_encoding == DRM_COLOR_YCBCR_BT709)
+ dvscntr |= DVS_YUV_CSC_FORMAT_BT709;
+
if (fb->modifier == I915_FORMAT_MOD_X_TILED)
dvscntr |= DVS_TILED;
@@ -1221,6 +1245,13 @@ intel_sprite_plane_create(struct drm_i915_private *dev_priv,
DRM_MODE_ROTATE_0,
supported_rotations);
+ drm_plane_create_color_properties(&intel_plane->base,
+ BIT(DRM_COLOR_YCBCR_BT601) |
+ BIT(DRM_COLOR_YCBCR_BT709),
+ BIT(DRM_COLOR_YCBCR_LIMITED_RANGE),
+ DRM_COLOR_YCBCR_BT601,
+ DRM_COLOR_YCBCR_LIMITED_RANGE);
+
drm_plane_helper_add(&intel_plane->base, &intel_plane_helper_funcs);
return intel_plane;
--
2.13.0
_______________________________________________
Intel-gfx mailing list
Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
