mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-30 18:47:06 +00:00
160 lines
5.0 KiB
Diff
160 lines
5.0 KiB
Diff
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,
|