diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0593-video-bcm2708_fb-Revert-cma-allocation-attempt.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-4.19/950-0593-video-bcm2708_fb-Revert-cma-allocation-attempt.patch | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0593-video-bcm2708_fb-Revert-cma-allocation-attempt.patch b/target/linux/bcm27xx/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/bcm27xx/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, |