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sandbox: video: Support 8bpp depth

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At present sandbox only supports 16 and 32bpp depths, since those are the
easy ones with SDL.

We can support other depths by manually converting the pixel formats. Add
support for this, to enable an 8ppp (monochrome) format.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2021-11-19 13:23:45 -07:00
committed by Anatolij Gustschin
parent bc0abd80b3
commit 0fe5e9481e
2 changed files with 77 additions and 11 deletions
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23
drivers/video/sandbox_sdl.c
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@@ -48,22 +48,33 @@ static int sandbox_sdl_probe(struct udevice *dev)
return 0;
}
static int sandbox_sdl_bind(struct udevice *dev)
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);
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);
plat->bpix = dev_read_u32_default(dev, "log2-depth", VIDEO_BPP16);
plat->rot = dev_read_u32_default(dev, "rotate", 0);
plat->bpix = l2bpp;
uc_plat->size = plat->xres * plat->yres * (1 << plat->bpix) / 8;
/* Allow space for two buffers, the lower one being the copy buffer */
log_debug("Frame buffer size %x\n", uc_plat->size);
if (IS_ENABLED(CONFIG_VIDEO_COPY))
uc_plat->size *= 2;
}
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;
}