diff options
Diffstat (limited to 'drivers/video/nvidia/nv_setup.c')
| -rw-r--r-- | drivers/video/nvidia/nv_setup.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/video/nvidia/nv_setup.c b/drivers/video/nvidia/nv_setup.c index 707e2c8a13ed..82579d3a9970 100644 --- a/drivers/video/nvidia/nv_setup.c +++ b/drivers/video/nvidia/nv_setup.c @@ -166,11 +166,13 @@ u8 NVReadDacData(struct nvidia_par *par) static int NVIsConnected(struct nvidia_par *par, int output) { volatile u32 __iomem *PRAMDAC = par->PRAMDAC0; - u32 reg52C, reg608; + u32 reg52C, reg608, dac0_reg608 = 0; int present; - if (output) - PRAMDAC += 0x800; + if (output) { + dac0_reg608 = NV_RD32(PRAMDAC, 0x0608); + PRAMDAC += 0x800; + } reg52C = NV_RD32(PRAMDAC, 0x052C); reg608 = NV_RD32(PRAMDAC, 0x0608); @@ -194,8 +196,8 @@ static int NVIsConnected(struct nvidia_par *par, int output) else printk("nvidiafb: CRTC%i analog not found\n", output); - NV_WR32(par->PRAMDAC0, 0x0608, NV_RD32(par->PRAMDAC0, 0x0608) & - 0x0000EFFF); + if (output) + NV_WR32(par->PRAMDAC0, 0x0608, dac0_reg608); NV_WR32(PRAMDAC, 0x052C, reg52C); NV_WR32(PRAMDAC, 0x0608, reg608); |