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From a8af2085e26bcefad8fb65e2b44d12777a84e219 Mon Sep 17 00:00:00 2001
From: Boris Brezillon <boris.brezillon@bootlin.com>
Date: Fri, 7 Dec 2018 09:36:05 +0100
Subject: [PATCH] drm/vc4: Fix negative X/Y positioning on SAND planes
Commit 8e75d582db02bcb171d65ec71eecbd3072a5fd3a upstream.
Commit 3e407417b192 ("drm/vc4: Fix X/Y positioning of planes using
T_TILES modifier") fixed the problem with T_TILES format, but left
things in a non-working state for SAND formats. Address that now.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20181207083606.15449-1-boris.brezillon@bootlin.com
---
drivers/gpu/drm/vc4/vc4_plane.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
--- a/drivers/gpu/drm/vc4/vc4_plane.c
+++ b/drivers/gpu/drm/vc4/vc4_plane.c
@@ -684,6 +684,7 @@ static int vc4_plane_mode_set(struct drm
case DRM_FORMAT_MOD_BROADCOM_SAND128:
case DRM_FORMAT_MOD_BROADCOM_SAND256: {
uint32_t param = fourcc_mod_broadcom_param(fb->modifier);
+ u32 tile_w, tile, x_off, pix_per_tile;
/* Column-based NV12 or RGBA.
*/
@@ -703,12 +704,15 @@ static int vc4_plane_mode_set(struct drm
switch (base_format_mod) {
case DRM_FORMAT_MOD_BROADCOM_SAND64:
tiling = SCALER_CTL0_TILING_64B;
+ tile_w = 64;
break;
case DRM_FORMAT_MOD_BROADCOM_SAND128:
tiling = SCALER_CTL0_TILING_128B;
+ tile_w = 128;
break;
case DRM_FORMAT_MOD_BROADCOM_SAND256:
tiling = SCALER_CTL0_TILING_256B_OR_T;
+ tile_w = 256;
break;
default:
break;
@@ -719,6 +723,23 @@ static int vc4_plane_mode_set(struct drm
return -EINVAL;
}
+ pix_per_tile = tile_w / fb->format->cpp[0];
+ tile = vc4_state->src_x / pix_per_tile;
+ x_off = vc4_state->src_x % pix_per_tile;
+
+ /* Adjust the base pointer to the first pixel to be scanned
+ * out.
+ */
+ for (i = 0; i < num_planes; i++) {
+ vc4_state->offsets[i] += param * tile_w * tile;
+ vc4_state->offsets[i] += vc4_state->src_y /
+ (i ? v_subsample : 1) *
+ tile_w;
+ vc4_state->offsets[i] += x_off /
+ (i ? h_subsample : 1) *
+ fb->format->cpp[i];
+ }
+
pitch0 = VC4_SET_FIELD(param, SCALER_TILE_HEIGHT);
break;
}
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