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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2013 Google, Inc
*/
#include <common.h>
#include <dm.h>
#include <fdtdec.h>
#include <log.h>
#include <video.h>
#include <asm/global_data.h>
#include <asm/sdl.h>
#include <asm/state.h>
#include <asm/u-boot-sandbox.h>
#include <dm/device-internal.h>
#include <dm/test.h>
DECLARE_GLOBAL_DATA_PTR;
enum {
/* Default LCD size we support */
LCD_MAX_WIDTH = 1366,
LCD_MAX_HEIGHT = 768,
};
static int sandbox_sdl_probe(struct udevice *dev)
{
struct video_uc_plat *uc_plat = dev_get_uclass_plat(dev);
struct sandbox_sdl_plat *plat = dev_get_plat(dev);
struct video_priv *uc_priv = dev_get_uclass_priv(dev);
struct sandbox_state *state = state_get_current();
int ret;
ret = sandbox_sdl_init_display(plat->xres, plat->yres, plat->bpix,
state->double_lcd);
if (ret) {
puts("LCD init failed\n");
return ret;
}
uc_priv->xsize = plat->xres;
uc_priv->ysize = plat->yres;
uc_priv->bpix = plat->bpix;
uc_priv->rot = plat->rot;
uc_priv->vidconsole_drv_name = plat->vidconsole_drv_name;
uc_priv->font_size = plat->font_size;
if (IS_ENABLED(CONFIG_VIDEO_COPY))
uc_plat->copy_base = uc_plat->base + uc_plat->size / 2;
return 0;
}
static void set_bpp(struct udevice *dev, enum video_log2_bpp l2bpp)
{
struct video_uc_plat *uc_plat = dev_get_uclass_plat(dev);
struct sandbox_sdl_plat *plat = dev_get_plat(dev);
plat->bpix = l2bpp;
uc_plat->size = plat->xres * plat->yres * VNBYTES(plat->bpix);
/*
* Set up to the maximum size we'll ever need. This is a strange case.
* The video memory is allocated by video_post_bind() called from
* board_init_r(). If a test changes the reoslution so it needs more
* memory later (with sandbox_sdl_set_bpp()), it is too late to make
* the frame buffer larger.
*
* So use a maximum size here.
*/
uc_plat->size = max(uc_plat->size, 1920U * 1080 * VNBYTES(VIDEO_BPP32));
/* Allow space for two buffers, the lower one being the copy buffer */
log_debug("Frame buffer size %x\n", uc_plat->size);
/*
* If a copy framebuffer is used, double the size and use the last half
* as the copy, with the first half as the normal frame buffer.
*/
if (IS_ENABLED(CONFIG_VIDEO_COPY))
uc_plat->size *= 2;
}
int sandbox_sdl_set_bpp(struct udevice *dev, enum video_log2_bpp l2bpp)
{
int ret;
if (device_active(dev))
return -EINVAL;
sandbox_sdl_remove_display();
set_bpp(dev, l2bpp);
ret = device_probe(dev);
if (ret)
return ret;
return 0;
}
static int sandbox_sdl_remove(struct udevice *dev)
{
/*
* Removing the display it a bit annoying when running unit tests, since
* they remove all devices. It is nice to be able to see what the test
* wrote onto the display. So this comment is just here to show how to
* do it, if we want to make it optional one day.
*
* sandbox_sdl_remove_display();
*/
return 0;
}
static int sandbox_sdl_bind(struct udevice *dev)
{
struct sandbox_sdl_plat *plat = dev_get_plat(dev);
enum video_log2_bpp l2bpp;
int ret = 0;
plat->xres = dev_read_u32_default(dev, "xres", LCD_MAX_WIDTH);
plat->yres = dev_read_u32_default(dev, "yres", LCD_MAX_HEIGHT);
l2bpp = dev_read_u32_default(dev, "log2-depth", VIDEO_BPP16);
plat->rot = dev_read_u32_default(dev, "rotate", 0);
set_bpp(dev, l2bpp);
return ret;
}
static const struct udevice_id sandbox_sdl_ids[] = {
{ .compatible = "sandbox,lcd-sdl" },
{ }
};
U_BOOT_DRIVER(sandbox_lcd_sdl) = {
.name = "sandbox_lcd_sdl",
.id = UCLASS_VIDEO,
.of_match = sandbox_sdl_ids,
.bind = sandbox_sdl_bind,
.probe = sandbox_sdl_probe,
.remove = sandbox_sdl_remove,
.plat_auto = sizeof(struct sandbox_sdl_plat),
};
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