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path: root/drivers/gpu/drm/radeon/radeon_combios.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_combios.c')
-rw-r--r--drivers/gpu/drm/radeon/radeon_combios.c50
1 files changed, 41 insertions, 9 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c
index fd94dbca33a..58f342659cc 100644
--- 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;
}