1 files changed, 65 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
index c0d4650cdb79..38209a61e515 100644
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -1800,6 +1800,9 @@ int r100_gpu_reset(struct radeon_device *rdev)
 
 void r100_set_common_regs(struct radeon_device *rdev)
 {
+        struct drm_device *dev = rdev->ddev;
+        bool force_dac2 = false;
+
         /* set these so they don't interfere with anything */
         WREG32(RADEON_OV0_SCALE_CNTL, 0);
         WREG32(RADEON_SUBPIC_CNTL, 0);
@@ -1808,6 +1811,68 @@ void r100_set_common_regs(struct radeon_device *rdev)
         WREG32(RADEON_DVI_I2C_CNTL_1, 0);
         WREG32(RADEON_CAP0_TRIG_CNTL, 0);
         WREG32(RADEON_CAP1_TRIG_CNTL, 0);
+
+        /* always set up dac2 on rn50 and some rv100 as lots
+         * of servers seem to wire it up to a VGA port but
+         * don't report it in the bios connector
+         * table.
+         */
+        switch (dev->pdev->device) {
+                /* RN50 */
+        case 0x515e:
+        case 0x5969:
+                force_dac2 = true;
+                break;
+                /* RV100*/
+        case 0x5159:
+        case 0x515a:
+                /* DELL triple head servers */
+                if ((dev->pdev->subsystem_vendor == 0x1028 /* DELL */) &&
+                    ((dev->pdev->subsystem_device == 0x016c) ||
+                     (dev->pdev->subsystem_device == 0x016d) ||
+                     (dev->pdev->subsystem_device == 0x016e) ||
+                     (dev->pdev->subsystem_device == 0x016f) ||
+                     (dev->pdev->subsystem_device == 0x0170) ||
+                     (dev->pdev->subsystem_device == 0x017d) ||
+                     (dev->pdev->subsystem_device == 0x017e) ||
+                     (dev->pdev->subsystem_device == 0x0183) ||
+                     (dev->pdev->subsystem_device == 0x018a) ||
+                     (dev->pdev->subsystem_device == 0x019a)))
+                        force_dac2 = true;
+                break;
+        }
+
+        if (force_dac2) {
+                u32 disp_hw_debug = RREG32(RADEON_DISP_HW_DEBUG);
+                u32 tv_dac_cntl = RREG32(RADEON_TV_DAC_CNTL);
+                u32 dac2_cntl = RREG32(RADEON_DAC_CNTL2);
+
+                /* For CRT on DAC2, don't turn it on if BIOS didn't
+                   enable it, even it's detected.
+                */
+
+                /* force it to crtc0 */
+                dac2_cntl &= ~RADEON_DAC2_DAC_CLK_SEL;
+                dac2_cntl |= RADEON_DAC2_DAC2_CLK_SEL;
+                disp_hw_debug |= RADEON_CRT2_DISP1_SEL;
+
+                /* set up the TV DAC */
+                tv_dac_cntl &= ~(RADEON_TV_DAC_PEDESTAL |
+                                 RADEON_TV_DAC_STD_MASK |
+                                 RADEON_TV_DAC_RDACPD |
+                                 RADEON_TV_DAC_GDACPD |
+                                 RADEON_TV_DAC_BDACPD |
+                                 RADEON_TV_DAC_BGADJ_MASK |
+                                 RADEON_TV_DAC_DACADJ_MASK);
+                tv_dac_cntl |= (RADEON_TV_DAC_NBLANK |
+                                RADEON_TV_DAC_NHOLD |
+                                RADEON_TV_DAC_STD_PS2 |
+                                (0x58 << 16));
+
+                WREG32(RADEON_TV_DAC_CNTL, tv_dac_cntl);
+                WREG32(RADEON_DISP_HW_DEBUG, disp_hw_debug);
+                WREG32(RADEON_DAC_CNTL2, dac2_cntl);
+        }
 }
 
 /*