brcm2708: organize kernel patches

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 73 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.19/950-0692-drm-vc4-Move-offsets-adjustment-out-of-setup_clippin.patch b/target/linux/brcm2708/patches-4.19/950-0692-drm-vc4-Move-offsets-adjustment-out-of-setup_clippin.patch
new file mode 100644
index 0000000000..9820c91d60
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0692-drm-vc4-Move-offsets-adjustment-out-of-setup_clippin.patch
@@ -0,0 +1,73 @@
+From 58a92eae6ed463c294381e72eefec701d23fcdaf Mon Sep 17 00:00:00 2001
+From: Boris Brezillon <boris.brezillon@bootlin.com>
+Date: Fri, 3 Aug 2018 11:22:30 +0200
+Subject: [PATCH] adjustment out of
+ setup_clipping_and_scaling()
+
+The offset adjustment depends on the framebuffer modified, so let's
+just move this operation in the DRM_FORMAT_MOD_LINEAR case inside
+vc4_plane_mode_set().
+
+This we'll be able to fix offset calculation for
+DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED and DRM_FORMAT_MOD_BROADCOM_SANDXXX.
+
+Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
+Reviewed-by: Eric Anholt <eric@anholt.net>
+Link: https://patchwork.freedesktop.org/patch/msgid/20180803092231.26446-4-boris.brezillon@bootlin.com
+---
+ drivers/gpu/drm/vc4/vc4_plane.c | 26 ++++++++++++++++----------
+ 1 file changed, 16 insertions(+), 10 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_plane.c
++++ b/drivers/gpu/drm/vc4/vc4_plane.c
+@@ -406,16 +406,6 @@ static int vc4_plane_setup_clipping_and_
+ 		vc4_state->y_scaling[1] = VC4_SCALING_NONE;
+ 	}
+ 
+-	/* Adjust the base pointer to the first pixel to be scanned out. */
+-	for (i = 0; i < num_planes; i++) {
+-		vc4_state->offsets[i] += (vc4_state->src_y /
+-					  (i ? v_subsample : 1)) *
+-					 fb->pitches[i];
+-		vc4_state->offsets[i] += (vc4_state->src_x /
+-					  (i ? h_subsample : 1)) *
+-					 fb->format->cpp[i];
+-	}
+-
+ 	return 0;
+ }
+ 
+@@ -523,6 +513,7 @@ static int vc4_plane_mode_set(struct drm
+ 	const struct hvs_format *format = vc4_get_hvs_format(fb->format->format);
+ 	u64 base_format_mod = fourcc_mod_broadcom_mod(fb->modifier);
+ 	int num_planes = drm_format_num_planes(format->drm);
++	u32 h_subsample, v_subsample;
+ 	bool mix_plane_alpha;
+ 	bool covers_screen;
+ 	u32 scl0, scl1, pitch0;
+@@ -568,10 +559,25 @@ static int vc4_plane_mode_set(struct drm
+ 		scl1 = vc4_get_scl_field(state, 0);
+ 	}
+ 
++	h_subsample = drm_format_horz_chroma_subsampling(format->drm);
++	v_subsample = drm_format_vert_chroma_subsampling(format->drm);
++
+ 	switch (base_format_mod) {
+ 	case DRM_FORMAT_MOD_LINEAR:
+ 		tiling = SCALER_CTL0_TILING_LINEAR;
+ 		pitch0 = VC4_SET_FIELD(fb->pitches[0], SCALER_SRC_PITCH);
++
++		/* Adjust the base pointer to the first pixel to be scanned
++		 * out.
++		 */
++		for (i = 0; i < num_planes; i++) {
++			vc4_state->offsets[i] += vc4_state->src_y /
++						 (i ? v_subsample : 1) *
++						 fb->pitches[i];
++			vc4_state->offsets[i] += vc4_state->src_x /
++						 (i ? h_subsample : 1) *
++						 fb->format->cpp[i];
++		}
+ 		break;
+ 
+ 	case DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED: {