Add support for DRM_FORMAT_{A,X}BGR8888 in amdgpu, for si and amd dc disabled
Here is it necessary to define and set crossbar registers
to swap red and blue channels
Signed-off-by: Mauro Rossi <issor.oruam at gmail.com>
---
drivers/gpu/drm/amd/amdgpu/dce_v6_0.c | 10 ++++++++++
drivers/gpu/drm/amd/amdgpu/si_enums.h | 20 ++++++++++++++++++++
drivers/gpu/drm/amd/amdgpu/sid.h | 20 ++++++++++++++++++++
3 files changed, 50 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
index 394cc1e8fe20..f2c3f6676352 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
@@ -1888,6 +1888,16 @@ static int dce_v6_0_crtc_do_set_base(struct drm_crtc *crtc,
/* Greater 8 bpc fb needs to bypass hw-lut to retain precision */
bypass_lut = true;
break;
+ case DRM_FORMAT_XBGR8888:
+ case DRM_FORMAT_ABGR8888:
+ fb_format = (GRPH_DEPTH(GRPH_DEPTH_32BPP) |
+ GRPH_FORMAT(GRPH_FORMAT_ARGB8888));
+ fb_swap = (GRPH_RED_CROSSBAR(GRPH_RED_SEL_B) |
+ GRPH_BLUE_CROSSBAR(GRPH_BLUE_SEL_R));
+#ifdef __BIG_ENDIAN
+ fb_swap = GRPH_ENDIAN_SWAP(GRPH_ENDIAN_8IN32);
+#endif
+ break;
default:
DRM_ERROR("Unsupported screen format %s\n",
drm_get_format_name(target_fb->format->format, &format_name));
diff --git a/drivers/gpu/drm/amd/amdgpu/si_enums.h b/drivers/gpu/drm/amd/amdgpu/si_enums.h
index dc9e0e6b4558..790ba46eaebb 100644
--- a/drivers/gpu/drm/amd/amdgpu/si_enums.h
+++ b/drivers/gpu/drm/amd/amdgpu/si_enums.h
@@ -46,6 +46,26 @@
#define GRPH_ENDIAN_8IN16 1
#define GRPH_ENDIAN_8IN32 2
#define GRPH_ENDIAN_8IN64 3
+#define GRPH_RED_CROSSBAR(x) (((x) & 0x3) << 4)
+#define GRPH_RED_SEL_R 0
+#define GRPH_RED_SEL_G 1
+#define GRPH_RED_SEL_B 2
+#define GRPH_RED_SEL_A 3
+#define GRPH_GREEN_CROSSBAR(x) (((x) & 0x3) << 6)
+#define GRPH_GREEN_SEL_G 0
+#define GRPH_GREEN_SEL_B 1
+#define GRPH_GREEN_SEL_A 2
+#define GRPH_GREEN_SEL_R 3
+#define GRPH_BLUE_CROSSBAR(x) (((x) & 0x3) << 8)
+#define GRPH_BLUE_SEL_B 0
+#define GRPH_BLUE_SEL_A 1
+#define GRPH_BLUE_SEL_R 2
+#define GRPH_BLUE_SEL_G 3
+#define GRPH_ALPHA_CROSSBAR(x) (((x) & 0x3) << 10)
+#define GRPH_ALPHA_SEL_A 0
+#define GRPH_ALPHA_SEL_R 1
+#define GRPH_ALPHA_SEL_G 2
+#define GRPH_ALPHA_SEL_B 3
#define GRPH_DEPTH(x) (((x) & 0x3) << 0)
#define GRPH_DEPTH_8BPP 0
diff --git a/drivers/gpu/drm/amd/amdgpu/sid.h b/drivers/gpu/drm/amd/amdgpu/sid.h
index c57eff159374..7cf12adb3915 100644
--- a/drivers/gpu/drm/amd/amdgpu/sid.h
+++ b/drivers/gpu/drm/amd/amdgpu/sid.h
@@ -2201,6 +2201,26 @@
# define EVERGREEN_GRPH_ENDIAN_8IN16 1
# define EVERGREEN_GRPH_ENDIAN_8IN32 2
# define EVERGREEN_GRPH_ENDIAN_8IN64 3
+#define EVERGREEN_GRPH_RED_CROSSBAR(x) (((x) & 0x3) << 4)
+# define EVERGREEN_GRPH_RED_SEL_R 0
+# define EVERGREEN_GRPH_RED_SEL_G 1
+# define EVERGREEN_GRPH_RED_SEL_B 2
+# define EVERGREEN_GRPH_RED_SEL_A 3
+#define EVERGREEN_GRPH_GREEN_CROSSBAR(x) (((x) & 0x3) << 6)
+# define EVERGREEN_GRPH_GREEN_SEL_G 0
+# define EVERGREEN_GRPH_GREEN_SEL_B 1
+# define EVERGREEN_GRPH_GREEN_SEL_A 2
+# define EVERGREEN_GRPH_GREEN_SEL_R 3
+#define EVERGREEN_GRPH_BLUE_CROSSBAR(x) (((x) & 0x3) << 8)
+# define EVERGREEN_GRPH_BLUE_SEL_B 0
+# define EVERGREEN_GRPH_BLUE_SEL_A 1
+# define EVERGREEN_GRPH_BLUE_SEL_R 2
+# define EVERGREEN_GRPH_BLUE_SEL_G 3
+#define EVERGREEN_GRPH_ALPHA_CROSSBAR(x) (((x) & 0x3) << 10)
+# define EVERGREEN_GRPH_ALPHA_SEL_A 0
+# define EVERGREEN_GRPH_ALPHA_SEL_R 1
+# define EVERGREEN_GRPH_ALPHA_SEL_G 2
+# define EVERGREEN_GRPH_ALPHA_SEL_B 3
#define EVERGREEN_D3VGA_CONTROL 0xf8
#define EVERGREEN_D4VGA_CONTROL 0xf9
--
2.17.1
