drm/radeon/kms: add primary dac adj values table

[safe/jmp/linux-2.6] / drivers / gpu / drm / radeon / radeon_combios.c

diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c
index fd94dbc..58f3426 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_combios.c
+++ b/drivers/gpu/drm/radeon/radeon_combios.c
@@ -595,6 +595,34 @@ bool radeon_combios_get_clock_info(struct drm_device *dev)
        return false;
 }
 
+static const uint32_t default_primarydac_adj[CHIP_LAST] = {
+       0x00000808,             /* r100  */
+       0x00000808,             /* rv100 */
+       0x00000808,             /* rs100 */
+       0x00000808,             /* rv200 */
+       0x00000808,             /* rs200 */
+       0x00000808,             /* r200  */
+       0x00000808,             /* rv250 */
+       0x00000000,             /* rs300 */
+       0x00000808,             /* rv280 */
+       0x00000808,             /* r300  */
+       0x00000808,             /* r350  */
+       0x00000808,             /* rv350 */
+       0x00000808,             /* rv380 */
+       0x00000808,             /* r420  */
+       0x00000808,             /* r423  */
+       0x00000808,             /* rv410 */
+       0x00000000,             /* rs400 */
+       0x00000000,             /* rs480 */
+};
+
+static void radeon_legacy_get_primary_dac_info_from_table(struct radeon_device *rdev,
+                                                         struct radeon_encoder_primary_dac *p_dac)
+{
+       p_dac->ps2_pdac_adj = default_primarydac_adj[rdev->family];
+       return;
+}
+
 struct radeon_encoder_primary_dac *radeon_combios_get_primary_dac_info(struct
                                                                       radeon_encoder
                                                                       *encoder)
@@ -604,20 +632,20 @@ struct radeon_encoder_primary_dac *radeon_combios_get_primary_dac_info(struct
        uint16_t dac_info;
        uint8_t rev, bg, dac;
        struct radeon_encoder_primary_dac *p_dac = NULL;
+       int found = 0;
 
-       if (rdev->bios == NULL)
+       p_dac = kzalloc(sizeof(struct radeon_encoder_primary_dac),
+                       GFP_KERNEL);
+
+       if (!p_dac)
                return NULL;
 
+       if (rdev->bios == NULL)
+               goto out;
+
        /* check CRT table */
        dac_info = combios_get_table_offset(dev, COMBIOS_CRT_INFO_TABLE);
        if (dac_info) {
-               p_dac =
-                   kzalloc(sizeof(struct radeon_encoder_primary_dac),
-                           GFP_KERNEL);
-
-               if (!p_dac)
-                       return NULL;
-
                rev = RBIOS8(dac_info) & 0x3;
                if (rev < 2) {
                        bg = RBIOS8(dac_info + 0x2) & 0xf;
@@ -628,9 +656,13 @@ struct radeon_encoder_primary_dac *radeon_combios_get_primary_dac_info(struct
                        dac = RBIOS8(dac_info + 0x3) & 0xf;
                        p_dac->ps2_pdac_adj = (bg << 8) | (dac);
                }
-
+               found = 1;
        }
 
+out:
+       if (!found) /* fallback to defaults */
+               radeon_legacy_get_primary_dac_info_from_table(rdev, p_dac);
+
        return p_dac;
 }