brcm2708: rename target to bcm27xx

This change makes the names of Broadcom targets consistent by using
the common notation based on SoC/CPU ID (which is used internally
anyway), bcmXXXX instead of brcmXXXX.
This is even used for target TITLE in make menuconfig already,
only the short target name used brcm so far.

Despite, since subtargets range from bcm2708 to bcm2711, it seems
appropriate to use bcm27xx instead of bcm2708 (again, as already done
for BOARDNAME).

This also renames the packages brcm2708-userland and brcm2708-gpu-fw.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 86 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-4.19/950-0663-drm-vc4-Fix-X-Y-positioning-of-planes-using-T_TILES-.patch b/target/linux/bcm27xx/patches-4.19/950-0663-drm-vc4-Fix-X-Y-positioning-of-planes-using-T_TILES-.patch
new file mode 100644
index 0000000000..6197d9076a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-4.19/950-0663-drm-vc4-Fix-X-Y-positioning-of-planes-using-T_TILES-.patch
@@ -0,0 +1,86 @@
+From 010e3665babdf589e26e2fb098ac1f39e519c0f6 Mon Sep 17 00:00:00 2001
+From: Boris Brezillon <boris.brezillon@bootlin.com>
+Date: Fri, 3 Aug 2018 11:22:31 +0200
+Subject: [PATCH] drm/vc4: Fix X/Y positioning of planes using T_TILES
+ modifier
+
+X/Y positioning of T-format buffers is quite tricky and the current
+implementation was failing to position a plane using this format
+correctly when the CRTC X, Y or both X and Y offsets were negative.
+It was also failing when the SRC X/Y offsets were != 0.
+
+Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
+Reviewed-by: Eric Anholt <eric@anholt.net>
+Link: https://patchwork.freedesktop.org/patch/msgid/20180803092231.26446-5-boris.brezillon@bootlin.com
+---
+ drivers/gpu/drm/vc4/vc4_plane.c | 50 ++++++++++++++++++++++++++++-----
+ 1 file changed, 43 insertions(+), 7 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_plane.c
++++ b/drivers/gpu/drm/vc4/vc4_plane.c
+@@ -578,22 +578,58 @@ static int vc4_plane_mode_set(struct drm
+ 						 (i ? h_subsample : 1) *
+ 						 fb->format->cpp[i];
+ 		}
++
+ 		break;
+ 
+ 	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; /* T tiles are 4kb */
++		/* Whole-tile offsets, mostly for setting the pitch. */
++		u32 tile_w_shift = fb->format->cpp[0] == 2 ? 6 : 5;
+ 		u32 tile_h_shift = 5; /* 16 and 32bpp are 32 pixels high */
++		u32 tile_w_mask = (1 << tile_w_shift) - 1;
++		/* The height mask on 32-bit-per-pixel tiles is 63, i.e. twice
++		 * the height (in pixels) of a 4k tile.
++		 */
++		u32 tile_h_mask = (2 << tile_h_shift) - 1;
++		/* 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 tiles_w = fb->pitches[0] >> (tile_size_shift - tile_h_shift);
++		u32 tiles_l = vc4_state->src_x >> tile_w_shift;
++		u32 tiles_r = tiles_w - tiles_l;
++		u32 tiles_t = vc4_state->src_y >> tile_h_shift;
++		/* Intra-tile offsets, which modify the base address (the
++		 * SCALER_PITCH0_TILE_Y_OFFSET tells HVS how to walk from that
++		 * base address).
++		 */
++		u32 tile_y = (vc4_state->src_y >> 4) & 1;
++		u32 subtile_y = (vc4_state->src_y >> 2) & 3;
++		u32 utile_y = vc4_state->src_y & 3;
++		u32 x_off = vc4_state->src_x & tile_w_mask;
++		u32 y_off = vc4_state->src_y & tile_h_mask;
+ 
+ 		tiling = SCALER_CTL0_TILING_256B_OR_T;
++		pitch0 = (VC4_SET_FIELD(x_off, SCALER_PITCH0_SINK_PIX) |
++			  VC4_SET_FIELD(y_off, SCALER_PITCH0_TILE_Y_OFFSET) |
++			  VC4_SET_FIELD(tiles_l, SCALER_PITCH0_TILE_WIDTH_L) |
++			  VC4_SET_FIELD(tiles_r, SCALER_PITCH0_TILE_WIDTH_R));
++		vc4_state->offsets[0] += tiles_t * (tiles_w << tile_size_shift);
++		vc4_state->offsets[0] += subtile_y << 8;
++		vc4_state->offsets[0] += utile_y << 4;
++
++		/* Rows of tiles alternate left-to-right and right-to-left. */
++		if (tiles_t & 1) {
++			pitch0 |= SCALER_PITCH0_TILE_INITIAL_LINE_DIR;
++			vc4_state->offsets[0] += (tiles_w - tiles_l) <<
++						 tile_size_shift;
++			vc4_state->offsets[0] -= (1 + !tile_y) << 10;
++		} else {
++			vc4_state->offsets[0] += tiles_l << tile_size_shift;
++			vc4_state->offsets[0] += tile_y << 10;
++		}
+ 
+-		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;
+ 	}
+