mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-17 10:18:38 +00:00
301af2388a
If U-Boot starts with the frame buffer set to 16bpp but then runs a test that uses 32bpp, there is not enough space. Update the driver to use the maximum possible frame-buffer size, to avoid this. Signed-off-by: Simon Glass <sjg@chromium.org>
125 lines
3.3 KiB
C
125 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2013 Google, Inc
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*/
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#include <common.h>
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#include <dm.h>
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#include <fdtdec.h>
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#include <log.h>
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#include <video.h>
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#include <asm/global_data.h>
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#include <asm/sdl.h>
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#include <asm/state.h>
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#include <asm/u-boot-sandbox.h>
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#include <dm/test.h>
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DECLARE_GLOBAL_DATA_PTR;
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enum {
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/* Default LCD size we support */
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LCD_MAX_WIDTH = 1366,
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LCD_MAX_HEIGHT = 768,
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};
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static int sandbox_sdl_probe(struct udevice *dev)
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{
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struct video_uc_plat *uc_plat = dev_get_uclass_plat(dev);
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struct sandbox_sdl_plat *plat = dev_get_plat(dev);
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struct video_priv *uc_priv = dev_get_uclass_priv(dev);
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struct sandbox_state *state = state_get_current();
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int ret;
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ret = sandbox_sdl_init_display(plat->xres, plat->yres, plat->bpix,
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state->double_lcd);
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if (ret) {
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puts("LCD init failed\n");
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return ret;
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}
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uc_priv->xsize = plat->xres;
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uc_priv->ysize = plat->yres;
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uc_priv->bpix = plat->bpix;
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uc_priv->rot = plat->rot;
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uc_priv->vidconsole_drv_name = plat->vidconsole_drv_name;
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uc_priv->font_size = plat->font_size;
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if (IS_ENABLED(CONFIG_VIDEO_COPY))
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uc_plat->copy_base = uc_plat->base - uc_plat->size / 2;
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return 0;
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}
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static void set_bpp(struct udevice *dev, enum video_log2_bpp l2bpp)
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{
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struct video_uc_plat *uc_plat = dev_get_uclass_plat(dev);
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struct sandbox_sdl_plat *plat = dev_get_plat(dev);
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plat->bpix = l2bpp;
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uc_plat->size = plat->xres * plat->yres * VNBYTES(plat->bpix);
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/*
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* Set up to the maximum size we'll ever need. This is a strange case.
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* The video memory is allocated by video_post_bind() called from
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* board_init_r(). If a test changes the reoslution so it needs more
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* memory later (with sandbox_sdl_set_bpp()), it is too late to make
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* the frame buffer larger.
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*
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* So use a maximum size here.
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*/
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uc_plat->size = max(uc_plat->size, 1920U * 1080 * VNBYTES(VIDEO_BPP32));
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/* Allow space for two buffers, the lower one being the copy buffer */
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log_debug("Frame buffer size %x\n", uc_plat->size);
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/*
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* If a copy framebuffer is used, double the size and use the last half
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* as the copy, with the first half as the normal frame buffer.
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*/
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if (IS_ENABLED(CONFIG_VIDEO_COPY))
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uc_plat->size *= 2;
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}
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static int sandbox_sdl_remove(struct udevice *dev)
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{
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/*
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* Removing the display it a bit annoying when running unit tests, since
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* they remove all devices. It is nice to be able to see what the test
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* wrote onto the display. So this comment is just here to show how to
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* do it, if we want to make it optional one day.
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*
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* sandbox_sdl_remove_display();
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*/
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return 0;
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}
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static int sandbox_sdl_bind(struct udevice *dev)
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{
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struct sandbox_sdl_plat *plat = dev_get_plat(dev);
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enum video_log2_bpp l2bpp;
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int ret = 0;
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plat->xres = dev_read_u32_default(dev, "xres", LCD_MAX_WIDTH);
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plat->yres = dev_read_u32_default(dev, "yres", LCD_MAX_HEIGHT);
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l2bpp = dev_read_u32_default(dev, "log2-depth", VIDEO_BPP16);
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plat->rot = dev_read_u32_default(dev, "rotate", 0);
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set_bpp(dev, l2bpp);
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return ret;
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}
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static const struct udevice_id sandbox_sdl_ids[] = {
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{ .compatible = "sandbox,lcd-sdl" },
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{ }
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};
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U_BOOT_DRIVER(sandbox_lcd_sdl) = {
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.name = "sandbox_lcd_sdl",
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.id = UCLASS_VIDEO,
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.of_match = sandbox_sdl_ids,
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.bind = sandbox_sdl_bind,
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.probe = sandbox_sdl_probe,
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.remove = sandbox_sdl_remove,
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.plat_auto = sizeof(struct sandbox_sdl_plat),
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};
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