diff options
| author | Krzysztof Helt <krzysztof.h1@wp.pl> | 2008-07-23 21:31:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-24 10:47:35 -0700 |
| commit | 54f019e54244fef0ad927ce5501927d9033492de (patch) | |
| tree | 805d47913db61c920352bbac436c1d8f0ddd94b7 /drivers/video/tridentfb.c | |
| parent | 65e93e038c8a6eb65b6907d6aed22a8ff1029d3a (diff) | |
| download | linux-54f019e54244fef0ad927ce5501927d9033492de.tar.bz2 | |
tridentfb: fix hi-color modes for TGUI 9440
The TGUI 9440 requires doubling clock for 16bpp (hi-color) modes.
The patch also moves back enable_mmio() call to the right position.
Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/tridentfb.c')
| -rw-r--r-- | drivers/video/tridentfb.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/drivers/video/tridentfb.c b/drivers/video/tridentfb.c index 26bc4d75d4fd..ed1b32a1cef5 100644 --- a/drivers/video/tridentfb.c +++ b/drivers/video/tridentfb.c @@ -835,6 +835,8 @@ static int tridentfb_check_var(struct fb_var_screeninfo *var, /* check color depth */ if (bpp == 24) bpp = var->bits_per_pixel = 32; + if (par->chip_id == TGUI9440 && bpp == 32) + return -EINVAL; /* check whether resolution fits on panel and in memory */ if (par->flatpanel && nativex && var->xres > nativex) return -EINVAL; @@ -881,7 +883,7 @@ static int tridentfb_check_var(struct fb_var_screeninfo *var, switch (par->chip_id) { case TGUI9440: - ramdac = 90000; + ramdac = (bpp >= 16) ? 45000 : 90000; break; case CYBER9320: case TGUI9660: @@ -1081,12 +1083,6 @@ static int tridentfb_set_par(struct fb_info *info) if (par->chip_id != TGUI9440) write3X4(par, PCIReg, read3X4(par, PCIReg) | 0x06); - /* convert from picoseconds to kHz */ - vclk = PICOS2KHZ(info->var.pixclock); - if (bpp == 32) - vclk *= 2; - set_vclk(par, vclk); - vga_mm_wseq(par->io_virt, 0, 3); vga_mm_wseq(par->io_virt, 1, 1); /* set char clock 8 dots wide */ /* enable 4 maps because needed in chain4 mode */ @@ -1094,10 +1090,16 @@ static int tridentfb_set_par(struct fb_info *info) vga_mm_wseq(par->io_virt, 3, 0); vga_mm_wseq(par->io_virt, 4, 0x0E); /* memory mode enable bitmaps ?? */ + /* convert from picoseconds to kHz */ + vclk = PICOS2KHZ(info->var.pixclock); + /* divide clock by 2 if 32bpp chain4 mode display and CPU path */ tmp = read3CE(par, MiscExtFunc) & 0xF0; - if (bpp == 32) + if (bpp == 32 || (par->chip_id == TGUI9440 && bpp == 16)) { tmp |= 8; + vclk *= 2; + } + set_vclk(par, vclk); write3CE(par, MiscExtFunc, tmp | 0x12); write3CE(par, 0x5, 0x40); /* no CGA compat, allow 256 col */ write3CE(par, 0x6, 0x05); /* graphics mode */ @@ -1361,6 +1363,8 @@ static int __devinit trident_pci_probe(struct pci_dev *dev, tridentfb_fix.smem_start = pci_resource_start(dev, 0); tridentfb_fix.smem_len = get_memsize(default_par); + enable_mmio(); + if (!request_mem_region(tridentfb_fix.smem_start, tridentfb_fix.smem_len, "tridentfb")) { debug("request_mem_region failed!\n"); disable_mmio(info->par); @@ -1368,8 +1372,6 @@ static int __devinit trident_pci_probe(struct pci_dev *dev, goto out_unmap1; } - enable_mmio(); - info->screen_base = ioremap_nocache(tridentfb_fix.smem_start, tridentfb_fix.smem_len); |