diff options
| -rw-r--r-- | drivers/video/nvidia/nvidia.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/drivers/video/nvidia/nvidia.c b/drivers/video/nvidia/nvidia.c index 96d51144094..691151e2bce 100644 --- a/drivers/video/nvidia/nvidia.c +++ b/drivers/video/nvidia/nvidia.c @@ -411,6 +411,7 @@ MODULE_DEVICE_TABLE(pci, nvidiafb_pci_tbl); /* command line data, set in nvidiafb_setup() */ static int flatpanel __devinitdata = -1; /* Autodetect later */ +static int fpdither __devinitdata = -1; static int forceCRTC __devinitdata = -1; static int hwcur __devinitdata = 0; static int noaccel __devinitdata = 0; @@ -1026,10 +1027,19 @@ static int nvidiafb_set_par(struct fb_info *info) NVTRACE_ENTER(); NVLockUnlock(par, 1); - if (!par->FlatPanel || (info->var.bits_per_pixel != 24) || - !par->twoHeads) + if (!par->FlatPanel || !par->twoHeads) par->FPDither = 0; + if (par->FPDither < 0) { + if ((par->Chipset & 0x0ff0) == 0x0110) + par->FPDither = !!(NV_RD32(par->PRAMDAC, 0x0528) + & 0x00010000); + else + par->FPDither = !!(NV_RD32(par->PRAMDAC, 0x083C) & 1); + printk(KERN_INFO PFX "Flat panel dithering %s\n", + par->FPDither ? "enabled" : "disabled"); + } + info->fix.visual = (info->var.bits_per_pixel == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR; @@ -1548,9 +1558,9 @@ static int __devinit nvidiafb_probe(struct pci_dev *pd, sprintf(nvidiafb_fix.id, "NV%x", (pd->device & 0x0ff0) >> 4); par->FlatPanel = flatpanel; - if (flatpanel == 1) printk(KERN_INFO PFX "flatpanel support enabled\n"); + par->FPDither = fpdither; par->CRTCnumber = forceCRTC; par->FpScale = (!noscale); @@ -1729,6 +1739,8 @@ static int __devinit nvidiafb_setup(char *options) } else if (!strncmp(this_opt, "nomtrr", 6)) { nomtrr = 1; #endif + } else if (!strncmp(this_opt, "fpdither:", 9)) { + fpdither = simple_strtol(this_opt+9, NULL, 0); } else mode_option = this_opt; } @@ -1775,7 +1787,11 @@ module_exit(nvidiafb_exit); module_param(flatpanel, int, 0); MODULE_PARM_DESC(flatpanel, "Enables experimental flat panel support for some chipsets. " - "(0 or 1=enabled) (default=0)"); + "(0=disabled, 1=enabled, -1=autodetect) (default=-1)"); +module_param(fpdither, int, 0); +MODULE_PARM_DESC(fpdither, + "Enables dithering of flat panel for 6 bits panels. " + "(0=disabled, 1=enabled, -1=autodetect) (default=-1)"); module_param(hwcur, int, 0); MODULE_PARM_DESC(hwcur, "Enables hardware cursor implementation. (0 or 1=enabled) " |