diff options
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/Kconfig | 8 | ||||
| -rw-r--r-- | drivers/video/am335x-fb.c | 2 | ||||
| -rw-r--r-- | drivers/video/vidconsole-uclass.c | 205 | ||||
| -rw-r--r-- | drivers/video/video-uclass.c | 4 |
4 files changed, 215 insertions, 4 deletions
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index 7ba7b580db..e6b7f11dc9 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -65,6 +65,14 @@ config VIDEO_BPP32 this option, such displays will not be supported and console output will be empty. +config VIDEO_ANSI + bool "Support ANSI escape sequences in video console" + depends on DM_VIDEO + default y if DM_VIDEO + help + Enable ANSI escape sequence decoding for a more fully functional + console. + config CONSOLE_NORMAL bool "Support a simple text console" depends on DM_VIDEO diff --git a/drivers/video/am335x-fb.c b/drivers/video/am335x-fb.c index bb5cc9788a..a8b3e747a0 100644 --- a/drivers/video/am335x-fb.c +++ b/drivers/video/am335x-fb.c @@ -128,7 +128,7 @@ int am335xfb_init(struct am335x_lcdpanel *panel) raster_ctrl |= LCD_TFT_24BPP_MODE; break; default: - error("am335x-fb: invalid bpp value: %d\n", panel->bpp); + pr_err("am335x-fb: invalid bpp value: %d\n", panel->bpp); return -1; } diff --git a/drivers/video/vidconsole-uclass.c b/drivers/video/vidconsole-uclass.c index b5afd72227..5f63c12d6c 100644 --- a/drivers/video/vidconsole-uclass.c +++ b/drivers/video/vidconsole-uclass.c @@ -9,6 +9,7 @@ */ #include <common.h> +#include <linux/ctype.h> #include <dm.h> #include <video.h> #include <video_console.h> @@ -107,12 +108,213 @@ static void vidconsole_newline(struct udevice *dev) video_sync(dev->parent); } +static const struct { + unsigned r; + unsigned g; + unsigned b; +} colors[] = { + { 0x00, 0x00, 0x00 }, /* black */ + { 0xff, 0x00, 0x00 }, /* red */ + { 0x00, 0xff, 0x00 }, /* green */ + { 0xff, 0xff, 0x00 }, /* yellow */ + { 0x00, 0x00, 0xff }, /* blue */ + { 0xff, 0x00, 0xff }, /* magenta */ + { 0x00, 0xff, 0xff }, /* cyan */ + { 0xff, 0xff, 0xff }, /* white */ +}; + +static void set_color(struct video_priv *priv, unsigned idx, unsigned *c) +{ + switch (priv->bpix) { + case VIDEO_BPP16: + *c = ((colors[idx].r >> 3) << 0) | + ((colors[idx].g >> 2) << 5) | + ((colors[idx].b >> 3) << 11); + break; + case VIDEO_BPP32: + *c = 0xff000000 | + (colors[idx].r << 0) | + (colors[idx].g << 8) | + (colors[idx].b << 16); + break; + default: + /* unsupported, leave current color in place */ + break; + } +} + +static char *parsenum(char *s, int *num) +{ + char *end; + *num = simple_strtol(s, &end, 10); + return end; +} + +/* + * Process a character while accumulating an escape string. Chars are + * accumulated into escape_buf until the end of escape sequence is + * found, at which point the sequence is parsed and processed. + */ +static void vidconsole_escape_char(struct udevice *dev, char ch) +{ + struct vidconsole_priv *priv = dev_get_uclass_priv(dev); + + if (!IS_ENABLED(CONFIG_VIDEO_ANSI)) + goto error; + + /* Sanity checking for bogus ESC sequences: */ + if (priv->escape_len >= sizeof(priv->escape_buf)) + goto error; + if (priv->escape_len == 0 && ch != '[') + goto error; + + priv->escape_buf[priv->escape_len++] = ch; + + /* + * Escape sequences are terminated by a letter, so keep + * accumulating until we get one: + */ + if (!isalpha(ch)) + return; + + /* + * clear escape mode first, otherwise things will get highly + * surprising if you hit any debug prints that come back to + * this console. + */ + priv->escape = 0; + + switch (ch) { + case 'H': + case 'f': { + int row, col; + char *s = priv->escape_buf; + + /* + * Set cursor position: [%d;%df or [%d;%dH + */ + s++; /* [ */ + s = parsenum(s, &row); + s++; /* ; */ + s = parsenum(s, &col); + + priv->ycur = row * priv->y_charsize; + priv->xcur_frac = priv->xstart_frac + + VID_TO_POS(col * priv->x_charsize); + + break; + } + case 'J': { + int mode; + + /* + * Clear part/all screen: + * [J or [0J - clear screen from cursor down + * [1J - clear screen from cursor up + * [2J - clear entire screen + * + * TODO we really only handle entire-screen case, others + * probably require some additions to video-uclass (and + * are not really needed yet by efi_console) + */ + parsenum(priv->escape_buf + 1, &mode); + + if (mode == 2) { + video_clear(dev->parent); + video_sync(dev->parent); + priv->ycur = 0; + priv->xcur_frac = priv->xstart_frac; + } else { + debug("unsupported clear mode: %d\n", mode); + } + break; + } + case 'm': { + struct video_priv *vid_priv = dev_get_uclass_priv(dev->parent); + char *s = priv->escape_buf; + char *end = &priv->escape_buf[priv->escape_len]; + + /* + * Set graphics mode: [%d;...;%dm + * + * Currently only supports the color attributes: + * + * Foreground Colors: + * + * 30 Black + * 31 Red + * 32 Green + * 33 Yellow + * 34 Blue + * 35 Magenta + * 36 Cyan + * 37 White + * + * Background Colors: + * + * 40 Black + * 41 Red + * 42 Green + * 43 Yellow + * 44 Blue + * 45 Magenta + * 46 Cyan + * 47 White + */ + + s++; /* [ */ + while (s < end) { + int val; + + s = parsenum(s, &val); + s++; + + switch (val) { + case 30 ... 37: + /* fg color */ + set_color(vid_priv, val - 30, + (unsigned *)&vid_priv->colour_fg); + break; + case 40 ... 47: + /* bg color */ + set_color(vid_priv, val - 40, + (unsigned *)&vid_priv->colour_bg); + break; + default: + /* unknown/unsupported */ + break; + } + } + + break; + } + default: + debug("unrecognized escape sequence: %*s\n", + priv->escape_len, priv->escape_buf); + } + + return; + +error: + /* something went wrong, just revert to normal mode: */ + priv->escape = 0; +} + int vidconsole_put_char(struct udevice *dev, char ch) { struct vidconsole_priv *priv = dev_get_uclass_priv(dev); int ret; + if (priv->escape) { + vidconsole_escape_char(dev, ch); + return 0; + } + switch (ch) { + case '\x1b': + priv->escape_len = 0; + priv->escape = 1; + break; case '\a': /* beep */ break; @@ -163,6 +365,7 @@ static void vidconsole_putc(struct stdio_dev *sdev, const char ch) struct udevice *dev = sdev->priv; vidconsole_put_char(dev, ch); + video_sync(dev->parent); } static void vidconsole_puts(struct stdio_dev *sdev, const char *s) @@ -260,6 +463,8 @@ static int do_video_puts(cmd_tbl_t *cmdtp, int flag, int argc, for (s = argv[1]; *s; s++) vidconsole_put_char(dev, *s); + video_sync(dev->parent); + return 0; } diff --git a/drivers/video/video-uclass.c b/drivers/video/video-uclass.c index dfa39b0d1b..dcaceed42c 100644 --- a/drivers/video/video-uclass.c +++ b/drivers/video/video-uclass.c @@ -87,7 +87,7 @@ int video_reserve(ulong *addrp) return 0; } -static int video_clear(struct udevice *dev) +void video_clear(struct udevice *dev) { struct video_priv *priv = dev_get_uclass_priv(dev); @@ -100,8 +100,6 @@ static int video_clear(struct udevice *dev) } else { memset(priv->fb, priv->colour_bg, priv->fb_size); } - - return 0; } /* Flush video activity to the caches */ |