bcm27xx: import latest patches from the RPi foundation

bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G

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

1 files changed, 179 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0229-gpu-vc4-fkms-Switch-to-the-newer-mailbox-frame-buffe.patch b/target/linux/bcm27xx/patches-5.4/950-0229-gpu-vc4-fkms-Switch-to-the-newer-mailbox-frame-buffe.patch
new file mode 100644
index 0000000000..fc84f535de
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0229-gpu-vc4-fkms-Switch-to-the-newer-mailbox-frame-buffe.patch
@@ -0,0 +1,179 @@
+From b721bcc62759ae7a2d9730d1121974702be96d7c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Tue, 26 Mar 2019 14:43:06 +0000
+Subject: [PATCH] gpu: vc4-fkms: Switch to the newer mailbox frame
+ buffer API.
+
+The old mailbox FB API was ideally deprecated but still used by
+the FKMS driver.
+Update to the newer API.
+
+NB This needs current firmware that accepts ARM allocated buffers
+through the newer API.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/gpu/drm/vc4/vc4_firmware_kms.c | 109 +++++++++++++------------
+ 1 file changed, 57 insertions(+), 52 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
+@@ -30,6 +30,25 @@
+ #include "vc4_regs.h"
+ #include <soc/bcm2835/raspberrypi-firmware.h>
+ 
++struct fb_alloc_tags {
++	struct rpi_firmware_property_tag_header tag1;
++	u32 xres, yres;
++	struct rpi_firmware_property_tag_header tag2;
++	u32 xres_virtual, yres_virtual;
++	struct rpi_firmware_property_tag_header tag3;
++	u32 bpp;
++	struct rpi_firmware_property_tag_header tag4;
++	u32 xoffset, yoffset;
++	struct rpi_firmware_property_tag_header tag5;
++	u32 base, screen_size;
++	struct rpi_firmware_property_tag_header tag6;
++	u32 pitch;
++	struct rpi_firmware_property_tag_header tag7;
++	u32 alpha_mode;
++	struct rpi_firmware_property_tag_header tag8;
++	u32 layer;
++};
++
+ /* The firmware delivers a vblank interrupt to us through the SMI
+  * hardware, which has only this one register.
+  */
+@@ -123,45 +142,39 @@ static void vc4_primary_plane_atomic_upd
+ 					    struct drm_plane_state *old_state)
+ {
+ 	struct vc4_dev *vc4 = to_vc4_dev(plane->dev);
+-	struct vc4_fkms_plane *vc4_plane = to_vc4_fkms_plane(plane);
+ 	struct drm_plane_state *state = plane->state;
+ 	struct drm_framebuffer *fb = state->fb;
+ 	struct drm_gem_cma_object *bo = drm_fb_cma_get_gem_obj(fb, 0);
+-	volatile struct fbinfo_s *fbinfo = vc4_plane->fbinfo;
++	u32 format = fb->format->format;
++	struct fb_alloc_tags fbinfo = {
++		.tag1 = { RPI_FIRMWARE_FRAMEBUFFER_SET_PHYSICAL_WIDTH_HEIGHT,
++			  8, 0, },
++			.xres = state->crtc_w,
++			.yres = state->crtc_h,
++		.tag2 = { RPI_FIRMWARE_FRAMEBUFFER_SET_VIRTUAL_WIDTH_HEIGHT,
++			  8, 0, },
++			.xres_virtual = state->crtc_w,
++			.yres_virtual = state->crtc_h,
++		.tag3 = { RPI_FIRMWARE_FRAMEBUFFER_SET_DEPTH, 4, 0 },
++			.bpp = 32,
++		.tag4 = { RPI_FIRMWARE_FRAMEBUFFER_SET_VIRTUAL_OFFSET, 8, 0 },
++			.xoffset = 0,
++			.yoffset = 0,
++		.tag5 = { RPI_FIRMWARE_FRAMEBUFFER_ALLOCATE, 8, 0 },
++			.base = bo->paddr + fb->offsets[0],
++			.screen_size = state->crtc_w * state->crtc_h * 4,
++		.tag6 = { RPI_FIRMWARE_FRAMEBUFFER_SET_PITCH, 4, 0 },
++			.pitch = fb->pitches[0],
++		.tag7 = { RPI_FIRMWARE_FRAMEBUFFER_SET_ALPHA_MODE, 4, 0 },
++			.alpha_mode = format == DRM_FORMAT_ARGB8888 ? 0 : 2,
++		.tag8 = { RPI_FIRMWARE_FRAMEBUFFER_SET_LAYER, 4, 0 },
++			.layer = -127,
++	};
+ 	u32 bpp = 32;
+ 	int ret;
+ 
+-	fbinfo->xres = state->crtc_w;
+-	fbinfo->yres = state->crtc_h;
+-	fbinfo->xres_virtual = state->crtc_w;
+-	fbinfo->yres_virtual = state->crtc_h;
+-	fbinfo->bpp = bpp;
+-	fbinfo->xoffset = state->crtc_x;
+-	fbinfo->yoffset = state->crtc_y;
+-	fbinfo->base = bo->paddr + fb->offsets[0];
+-	fbinfo->pitch = fb->pitches[0];
+-
+ 	if (fb->modifier == DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED)
+-		fbinfo->bpp |= BIT(31);
+-
+-	/* A bug in the firmware makes it so that if the fb->base is
+-	 * set to nonzero, the configured pitch gets overwritten with
+-	 * the previous pitch.  So, to get the configured pitch
+-	 * recomputed, we have to make it allocate itself a new buffer
+-	 * in VC memory, first.
+-	 */
+-	if (vc4_plane->pitch != fb->pitches[0]) {
+-		u32 saved_base = fbinfo->base;
+-		fbinfo->base = 0;
+-
+-		ret = rpi_firmware_transaction(vc4->firmware,
+-					       RPI_FIRMWARE_CHAN_FB,
+-					       vc4_plane->fbinfo_bus_addr);
+-		fbinfo->base = saved_base;
+-
+-		vc4_plane->pitch = fbinfo->pitch;
+-		WARN_ON_ONCE(vc4_plane->pitch != fb->pitches[0]);
+-	}
++		fbinfo.bpp |= BIT(31);
+ 
+ 	DRM_DEBUG_ATOMIC("[PLANE:%d:%s] primary update %dx%d@%d +%d,%d 0x%pad/%d\n",
+ 			 plane->base.id, plane->name,
+@@ -170,14 +183,13 @@ static void vc4_primary_plane_atomic_upd
+ 			 bpp,
+ 			 state->crtc_x,
+ 			 state->crtc_y,
+-			 &fbinfo->base,
++			 &fbinfo.base,
+ 			 fb->pitches[0]);
+ 
+-	ret = rpi_firmware_transaction(vc4->firmware,
+-				       RPI_FIRMWARE_CHAN_FB,
+-				       vc4_plane->fbinfo_bus_addr);
+-	WARN_ON_ONCE(fbinfo->pitch != fb->pitches[0]);
+-	WARN_ON_ONCE(fbinfo->base != bo->paddr + fb->offsets[0]);
++	ret = rpi_firmware_property_list(vc4->firmware, &fbinfo,
++					 sizeof(fbinfo));
++	WARN_ON_ONCE(fbinfo.pitch != fb->pitches[0]);
++	WARN_ON_ONCE(fbinfo.base != bo->paddr + fb->offsets[0]);
+ 
+ 	/* If the CRTC is on (or going to be on) and we're enabled,
+ 	 * then unblank.  Otherwise, stay blank until CRTC enable.
+@@ -333,10 +345,10 @@ static const struct drm_plane_helper_fun
+ static struct drm_plane *vc4_fkms_plane_init(struct drm_device *dev,
+ 					     enum drm_plane_type type)
+ {
++	/* Primary and cursor planes only */
+ 	struct drm_plane *plane = NULL;
+ 	struct vc4_fkms_plane *vc4_plane;
+-	u32 xrgb8888 = DRM_FORMAT_XRGB8888;
+-	u32 argb8888 = DRM_FORMAT_ARGB8888;
++	u32 formats[] = {DRM_FORMAT_ARGB8888, DRM_FORMAT_XRGB8888};
+ 	int ret = 0;
+ 	bool primary = (type == DRM_PLANE_TYPE_PRIMARY);
+ 	static const uint64_t modifiers[] = {
+@@ -358,22 +370,15 @@ static struct drm_plane *vc4_fkms_plane_
+ 	plane = &vc4_plane->base;
+ 	ret = drm_universal_plane_init(dev, plane, 0xff,
+ 				       &vc4_plane_funcs,
+-				       primary ? &xrgb8888 : &argb8888, 1,
+-				       modifiers,
++				       formats, primary ? 2 : 1, modifiers,
+ 				       type, primary ? "primary" : "cursor");
+ 
+-	if (type == DRM_PLANE_TYPE_PRIMARY) {
+-		vc4_plane->fbinfo =
+-			dma_alloc_coherent(dev->dev,
+-					   sizeof(*vc4_plane->fbinfo),
+-					   &vc4_plane->fbinfo_bus_addr,
+-					   GFP_KERNEL);
+-		memset(vc4_plane->fbinfo, 0, sizeof(*vc4_plane->fbinfo));
+-
++	if (type == DRM_PLANE_TYPE_PRIMARY)
+ 		drm_plane_helper_add(plane, &vc4_primary_plane_helper_funcs);
+-	} else {
++	else
+ 		drm_plane_helper_add(plane, &vc4_cursor_plane_helper_funcs);
+-	}
++
++	drm_plane_create_alpha_property(plane);
+ 
+ 	return plane;
+ fail: