+++ /dev/null
-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,
projects / openwrt / staging / luka.git / blobdiff