diff options
Diffstat (limited to 'drivers/video/pm3fb.c')
| -rw-r--r-- | drivers/video/pm3fb.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/drivers/video/pm3fb.c b/drivers/video/pm3fb.c index 1c41a4e5bc99..6a64b934133a 100644 --- a/drivers/video/pm3fb.c +++ b/drivers/video/pm3fb.c @@ -55,6 +55,7 @@ /* * Driver data */ +static int hwcursor = 1; static char *mode_option __devinitdata; static int noaccel __devinitdata; @@ -604,6 +605,117 @@ static void pm3fb_imageblit(struct fb_info *info, const struct fb_image *image) } /* end of acceleration functions */ +/* + * Hardware Cursor support. + */ +static const u8 cursor_bits_lookup[16] = { + 0x00, 0x40, 0x10, 0x50, 0x04, 0x44, 0x14, 0x54, + 0x01, 0x41, 0x11, 0x51, 0x05, 0x45, 0x15, 0x55 +}; + +static int pm3fb_cursor(struct fb_info *info, struct fb_cursor *cursor) +{ + struct pm3_par *par = info->par; + u8 mode; + + if (!hwcursor) + return -EINVAL; /* just to force soft_cursor() call */ + + /* Too large of a cursor or wrong bpp :-( */ + if (cursor->image.width > 64 || + cursor->image.height > 64 || + cursor->image.depth > 1) + return -EINVAL; + + mode = PM3RD_CursorMode_TYPE_X; + if (cursor->enable) + mode |= PM3RD_CursorMode_CURSOR_ENABLE; + + PM3_WRITE_DAC_REG(par, PM3RD_CursorMode, mode); + + /* + * If the cursor is not be changed this means either we want the + * current cursor state (if enable is set) or we want to query what + * we can do with the cursor (if enable is not set) + */ + if (!cursor->set) + return 0; + + if (cursor->set & FB_CUR_SETPOS) { + int x = cursor->image.dx - info->var.xoffset; + int y = cursor->image.dy - info->var.yoffset; + + PM3_WRITE_DAC_REG(par, PM3RD_CursorXLow, x & 0xff); + PM3_WRITE_DAC_REG(par, PM3RD_CursorXHigh, (x >> 8) & 0xf); + PM3_WRITE_DAC_REG(par, PM3RD_CursorYLow, y & 0xff); + PM3_WRITE_DAC_REG(par, PM3RD_CursorYHigh, (y >> 8) & 0xf); + } + + if (cursor->set & FB_CUR_SETHOT) { + PM3_WRITE_DAC_REG(par, PM3RD_CursorHotSpotX, + cursor->hot.x & 0x3f); + PM3_WRITE_DAC_REG(par, PM3RD_CursorHotSpotY, + cursor->hot.y & 0x3f); + } + + if (cursor->set & FB_CUR_SETCMAP) { + u32 fg_idx = cursor->image.fg_color; + u32 bg_idx = cursor->image.bg_color; + struct fb_cmap cmap = info->cmap; + + /* the X11 driver says one should use these color registers */ + PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(39), + cmap.red[fg_idx] >> 8 ); + PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(40), + cmap.green[fg_idx] >> 8 ); + PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(41), + cmap.blue[fg_idx] >> 8 ); + + PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(42), + cmap.red[bg_idx] >> 8 ); + PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(43), + cmap.green[bg_idx] >> 8 ); + PM3_WRITE_DAC_REG(par, PM3RD_CursorPalette(44), + cmap.blue[bg_idx] >> 8 ); + } + + if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) { + u8 *bitmap = (u8 *)cursor->image.data; + u8 *mask = (u8 *)cursor->mask; + int i; + int pos = PM3RD_CursorPattern(0); + + for (i = 0; i < cursor->image.height; i++) { + int j = (cursor->image.width + 7) >> 3; + int k = 8 - j; + + for (; j > 0; j--) { + u8 data = *bitmap ^ *mask; + + if (cursor->rop == ROP_COPY) + data = *mask & *bitmap; + /* Upper 4 bits of bitmap data */ + PM3_WRITE_DAC_REG(par, pos++, + cursor_bits_lookup[data >> 4] | + (cursor_bits_lookup[*mask >> 4] << 1)); + /* Lower 4 bits of bitmap */ + PM3_WRITE_DAC_REG(par, pos++, + cursor_bits_lookup[data & 0xf] | + (cursor_bits_lookup[*mask & 0xf] << 1)); + bitmap++; + mask++; + } + for (; k > 0; k--) { + PM3_WRITE_DAC_REG(par, pos++, 0); + PM3_WRITE_DAC_REG(par, pos++, 0); + } + } + while (pos < PM3RD_CursorPattern(1024)) + PM3_WRITE_DAC_REG(par, pos++, 0); + } + return 0; +} + /* write the mode to registers */ static void pm3fb_write_mode(struct fb_info *info) { @@ -1103,6 +1215,7 @@ static struct fb_ops pm3fb_ops = { .fb_imageblit = pm3fb_imageblit, .fb_blank = pm3fb_blank, .fb_sync = pm3fb_sync, + .fb_cursor = pm3fb_cursor, }; /* ------------------------------------------------------------------------- */ @@ -1418,6 +1531,8 @@ static int __init pm3fb_setup(char *options) continue; else if (!strncmp(this_opt, "noaccel", 7)) noaccel = 1; + else if (!strncmp(this_opt, "hwcursor=", 9)) + hwcursor = simple_strtoul(this_opt + 9, NULL, 0); #ifdef CONFIG_MTRR else if (!strncmp(this_opt, "nomtrr", 6)) nomtrr = 1; @@ -1457,6 +1572,9 @@ module_init(pm3fb_init); module_param(noaccel, bool, 0); MODULE_PARM_DESC(noaccel, "Disable acceleration"); +module_param(hwcursor, int, 0644); +MODULE_PARM_DESC(hwcursor, "Enable hardware cursor " + "(1=enable, 0=disable, default=1)"); #ifdef CONFIG_MTRR module_param(nomtrr, bool, 0); MODULE_PARM_DESC(nomtrr, "Disable MTRR support (0 or 1=disabled) (default=0)"); |