nvidiafb: Add proper support for Geforce 7600 chipset
Add proper support for the Geforce 7600 (device id 0x039x). This also sync's
nvidiafb with the latest Xorg nv driver.
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/video/nvidia/nv_setup.c b/drivers/video/nvidia/nv_setup.c
index 707e2c8..82579d3 100644
--- a/drivers/video/nvidia/nv_setup.c
+++ b/drivers/video/nvidia/nv_setup.c
@@ -166,11 +166,13 @@
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 @@
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);