brcm2708: update to latest patches from RPi foundation

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

1 files changed, 159 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.19/950-0593-video-bcm2708_fb-Revert-cma-allocation-attempt.patch b/target/linux/brcm2708/patches-4.19/950-0593-video-bcm2708_fb-Revert-cma-allocation-attempt.patch
new file mode 100644
index 0000000000..1eed4f7277
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0593-video-bcm2708_fb-Revert-cma-allocation-attempt.patch
@@ -0,0 +1,159 @@
+From b3fe618a47d770f6c9808ade14360fd81a599789 Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Wed, 19 Jun 2019 03:55:50 +0100
+Subject: [PATCH] video/bcm2708_fb: Revert cma allocation attempt
+
+"4600e91 Pulled in the multi frame buffer support from the Pi3 repo"
+pulled back in the code for allocating the framebuffer from the CMA
+heap.
+Revert it again.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/video/fbdev/bcm2708_fb.c           | 101 +++------------------
+ include/soc/bcm2835/raspberrypi-firmware.h |   1 -
+ 2 files changed, 13 insertions(+), 89 deletions(-)
+
+--- a/drivers/video/fbdev/bcm2708_fb.c
++++ b/drivers/video/fbdev/bcm2708_fb.c
+@@ -112,9 +112,6 @@ struct bcm2708_fb {
+ 	struct vc4_display_settings_t display_settings;
+ 	struct debugfs_regset32 screeninfo_regset;
+ 	struct bcm2708_fb_dev *fbdev;
+-	unsigned int image_size;
+-	dma_addr_t dma_addr;
+-	void *cpuaddr;
+ };
+ 
+ #define MAX_FRAMEBUFFERS 3
+@@ -377,12 +374,12 @@ static int bcm2708_fb_set_par(struct fb_
+ 			.xoffset = info->var.xoffset,
+ 			.yoffset = info->var.yoffset,
+ 		.tag5 = { RPI_FIRMWARE_FRAMEBUFFER_ALLOCATE, 8, 0 },
+-			/* base and screen_size will be initialised later */
+-		.tag6 = { RPI_FIRMWARE_FRAMEBUFFER_SET_PITCH, 4, 0 },
+-			/* pitch will be initialised later */
++			.base = 0,
++			.screen_size = 0,
++		.tag6 = { RPI_FIRMWARE_FRAMEBUFFER_GET_PITCH, 4, 0 },
++			.pitch = 0,
+ 	};
+-	int ret, image_size;
+-
++	int ret;
+ 
+ 	print_debug("%s(%p) %dx%d (%dx%d), %d, %d (display %d)\n", __func__,
+ 		    info,
+@@ -397,76 +394,12 @@ static int bcm2708_fb_set_par(struct fb_
+ 	 */
+ 	set_display_num(fb);
+ 
+-	/* Try allocating our own buffer. We can specify all the parameters */
+-	image_size = ((info->var.xres * info->var.yres) *
+-		      info->var.bits_per_pixel) >> 3;
+-
+-	if (!fb->fbdev->disable_arm_alloc &&
+-	    (image_size != fb->image_size || !fb->dma_addr)) {
+-		if (fb->dma_addr) {
+-			dma_free_coherent(info->device, fb->image_size,
+-					  fb->cpuaddr, fb->dma_addr);
+-			fb->image_size = 0;
+-			fb->cpuaddr = NULL;
+-			fb->dma_addr = 0;
+-		}
+-
+-		fb->cpuaddr = dma_alloc_coherent(info->device, image_size,
+-						 &fb->dma_addr, GFP_KERNEL);
+-
+-		if (!fb->cpuaddr) {
+-			fb->dma_addr = 0;
+-			fb->fbdev->disable_arm_alloc = true;
+-		} else {
+-			fb->image_size = image_size;
+-		}
+-	}
+-
+-	if (fb->cpuaddr) {
+-		fbinfo.base = fb->dma_addr;
+-		fbinfo.screen_size = image_size;
+-		fbinfo.pitch = (info->var.xres * info->var.bits_per_pixel) >> 3;
+-
+-		ret = rpi_firmware_property_list(fb->fbdev->fw, &fbinfo,
+-						 sizeof(fbinfo));
+-		if (ret || fbinfo.base != fb->dma_addr) {
+-			/* Firmware either failed, or assigned a different base
+-			 * address (ie it doesn't support being passed an FB
+-			 * allocation).
+-			 * Destroy the allocation, and don't try again.
+-			 */
+-			dma_free_coherent(info->device, fb->image_size,
+-					  fb->cpuaddr, fb->dma_addr);
+-			fb->image_size = 0;
+-			fb->cpuaddr = NULL;
+-			fb->dma_addr = 0;
+-			fb->fbdev->disable_arm_alloc = true;
+-		}
+-	} else {
+-		/* Our allocation failed - drop into the old scheme of
+-		 * allocation by the VPU.
+-		 */
+-		ret = -ENOMEM;
+-	}
+-
++	ret = rpi_firmware_property_list(fb->fbdev->fw, &fbinfo,
++					 sizeof(fbinfo));
+ 	if (ret) {
+-		/* Old scheme:
+-		 * - FRAMEBUFFER_ALLOCATE passes 0 for base and screen_size.
+-		 * - GET_PITCH instead of SET_PITCH.
+-		 */
+-		fbinfo.base = 0;
+-		fbinfo.screen_size = 0;
+-		fbinfo.tag6.tag = RPI_FIRMWARE_FRAMEBUFFER_GET_PITCH;
+-		fbinfo.pitch = 0;
+-
+-		ret = rpi_firmware_property_list(fb->fbdev->fw, &fbinfo,
+-						 sizeof(fbinfo));
+-		if (ret) {
+-			dev_err(info->device,
+-				"Failed to allocate GPU framebuffer (%d)\n",
+-				ret);
+-			return ret;
+-		}
++		dev_err(info->device,
++			"Failed to allocate GPU framebuffer (%d)\n", ret);
++		return ret;
+ 	}
+ 
+ 	if (info->var.bits_per_pixel <= 8)
+@@ -481,17 +414,9 @@ static int bcm2708_fb_set_par(struct fb_
+ 	fb->fb.fix.smem_start = fbinfo.base;
+ 	fb->fb.fix.smem_len = fbinfo.pitch * fbinfo.yres_virtual;
+ 	fb->fb.screen_size = fbinfo.screen_size;
+-
+-	if (!fb->dma_addr) {
+-		if (fb->fb.screen_base)
+-			iounmap(fb->fb.screen_base);
+-
+-		fb->fb.screen_base = ioremap_wc(fbinfo.base,
+-						fb->fb.screen_size);
+-	} else {
+-		fb->fb.screen_base = fb->cpuaddr;
+-	}
+-
++	if (fb->fb.screen_base)
++		iounmap(fb->fb.screen_base);
++	fb->fb.screen_base = ioremap_wc(fbinfo.base, fb->fb.screen_size);
+ 	if (!fb->fb.screen_base) {
+ 		/* the console may currently be locked */
+ 		console_trylock();
+--- a/include/soc/bcm2835/raspberrypi-firmware.h
++++ b/include/soc/bcm2835/raspberrypi-firmware.h
+@@ -138,7 +138,6 @@ enum rpi_firmware_property_tag {
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_DEPTH =                  0x00048005,
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_PIXEL_ORDER =            0x00048006,
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_ALPHA_MODE =             0x00048007,
+-	RPI_FIRMWARE_FRAMEBUFFER_SET_PITCH =                  0x00048008,
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_VIRTUAL_OFFSET =         0x00048009,
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_OVERSCAN =               0x0004800a,
+ 	RPI_FIRMWARE_FRAMEBUFFER_SET_PALETTE =                0x0004800b,