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dm: video: Add color ANSI escape sequence support
Note that this doesn't differentiate (due to lack of information in video_priv) between different possible component orders for 32bpp. But the main user at this point is efi_loader, and GOP expects xBGR so any video drivers that this is incorrect for already have problems. (Also, conveniently, this matches what simple-framebuffer bindings expect for kernels that use the simple-framebuffer DT binding to take over the bootloader display.) Signed-off-by: Rob Clark <robdclark@gmail.com>
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1 changed files with 94 additions and 0 deletions
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@ -108,6 +108,41 @@ static void vidconsole_newline(struct udevice *dev)
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video_sync(dev->parent);
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}
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static const struct {
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unsigned r;
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unsigned g;
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unsigned b;
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} colors[] = {
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{ 0x00, 0x00, 0x00 }, /* black */
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{ 0xff, 0x00, 0x00 }, /* red */
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{ 0x00, 0xff, 0x00 }, /* green */
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{ 0xff, 0xff, 0x00 }, /* yellow */
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{ 0x00, 0x00, 0xff }, /* blue */
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{ 0xff, 0x00, 0xff }, /* magenta */
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{ 0x00, 0xff, 0xff }, /* cyan */
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{ 0xff, 0xff, 0xff }, /* white */
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};
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static void set_color(struct video_priv *priv, unsigned idx, unsigned *c)
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{
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switch (priv->bpix) {
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case VIDEO_BPP16:
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*c = ((colors[idx].r >> 3) << 0) |
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((colors[idx].g >> 2) << 5) |
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((colors[idx].b >> 3) << 11);
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break;
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case VIDEO_BPP32:
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*c = 0xff000000 |
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(colors[idx].r << 0) |
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(colors[idx].g << 8) |
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(colors[idx].b << 16);
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break;
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default:
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/* unsupported, leave current color in place */
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break;
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}
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}
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static char *parsenum(char *s, int *num)
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{
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char *end;
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@ -194,6 +229,65 @@ static void vidconsole_escape_char(struct udevice *dev, char ch)
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}
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break;
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}
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case 'm': {
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struct video_priv *vid_priv = dev_get_uclass_priv(dev->parent);
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char *s = priv->escape_buf;
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char *end = &priv->escape_buf[priv->escape_len];
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/*
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* Set graphics mode: [%d;...;%dm
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*
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* Currently only supports the color attributes:
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*
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* Foreground Colors:
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*
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* 30 Black
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* 31 Red
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* 32 Green
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* 33 Yellow
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* 34 Blue
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* 35 Magenta
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* 36 Cyan
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* 37 White
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*
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* Background Colors:
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*
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* 40 Black
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* 41 Red
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* 42 Green
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* 43 Yellow
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* 44 Blue
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* 45 Magenta
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* 46 Cyan
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* 47 White
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*/
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s++; /* [ */
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while (s < end) {
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int val;
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s = parsenum(s, &val);
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s++;
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switch (val) {
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case 30 ... 37:
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/* fg color */
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set_color(vid_priv, val - 30,
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(unsigned *)&vid_priv->colour_fg);
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break;
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case 40 ... 47:
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/* bg color */
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set_color(vid_priv, val - 40,
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(unsigned *)&vid_priv->colour_bg);
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break;
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default:
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/* unknown/unsupported */
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break;
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}
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}
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break;
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}
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default:
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debug("unrecognized escape sequence: %*s\n",
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priv->escape_len, priv->escape_buf);
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