diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.14/950-0131-drm-vc4-Fix-pitch-setup-for-T-format-scanout.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.14/950-0131-drm-vc4-Fix-pitch-setup-for-T-format-scanout.patch | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.14/950-0131-drm-vc4-Fix-pitch-setup-for-T-format-scanout.patch b/target/linux/brcm2708/patches-4.14/950-0131-drm-vc4-Fix-pitch-setup-for-T-format-scanout.patch new file mode 100644 index 0000000000..4aa018f541 --- /dev/null +++ b/target/linux/brcm2708/patches-4.14/950-0131-drm-vc4-Fix-pitch-setup-for-T-format-scanout.patch @@ -0,0 +1,48 @@ +From 82f8b13481afeb2400bce276cf88a757fac87a21 Mon Sep 17 00:00:00 2001 +From: Eric Anholt <eric@anholt.net> +Date: Fri, 14 Jul 2017 17:33:08 -0700 +Subject: [PATCH 131/454] drm/vc4: Fix pitch setup for T-format scanout. + +The documentation said to use src_w here, and I didn't consider that +we actually needed to be using pitch somewhere in our setup. Fixes +scanout on my DSI panel when X11 does initial setup with 1920x1080 +HDMI and 800x480 DSI both at 0,0 of the same framebuffer. + +Signed-off-by: Eric Anholt <eric@anholt.net> +Fixes: 98830d91da08 ("drm/vc4: Add T-format scanout support.") +--- + drivers/gpu/drm/vc4/vc4_plane.c | 20 +++++++++++++++----- + 1 file changed, 15 insertions(+), 5 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_plane.c ++++ b/drivers/gpu/drm/vc4/vc4_plane.c +@@ -546,14 +546,24 @@ static int vc4_plane_mode_set(struct drm + tiling = SCALER_CTL0_TILING_LINEAR; + pitch0 = VC4_SET_FIELD(fb->pitches[0], SCALER_SRC_PITCH); + break; +- case DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED: ++ ++ case DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED: { ++ /* For T-tiled, the FB pitch is "how many bytes from ++ * one row to the next, such that pitch * tile_h == ++ * tile_size * tiles_per_row." ++ */ ++ u32 tile_size_shift = 12; ++ u32 tile_h_shift = 5; ++ u32 tiles_w = fb->pitches[0] >> (tile_size_shift - tile_h_shift); ++ + tiling = SCALER_CTL0_TILING_256B_OR_T; + +- pitch0 = (VC4_SET_FIELD(0, SCALER_PITCH0_TILE_Y_OFFSET), +- VC4_SET_FIELD(0, SCALER_PITCH0_TILE_WIDTH_L), +- VC4_SET_FIELD((vc4_state->src_w[0] + 31) >> 5, +- SCALER_PITCH0_TILE_WIDTH_R)); ++ pitch0 = (VC4_SET_FIELD(0, SCALER_PITCH0_TILE_Y_OFFSET) | ++ VC4_SET_FIELD(0, SCALER_PITCH0_TILE_WIDTH_L) | ++ VC4_SET_FIELD(tiles_w, SCALER_PITCH0_TILE_WIDTH_R)); + break; ++ } ++ + default: + DRM_DEBUG_KMS("Unsupported FB tiling flag 0x%16llx", + (long long)fb->modifier); |