>From a71f0302835876038fb608e0d7a570dc3a0f145c Mon Sep 17 00:00:00 2001 From: Alex Deucher <alexdeuc...@gmail.com> Date: Tue, 29 Dec 2009 12:09:17 -0500 Subject: [PATCH] drm/radeon/kms: add primary dac adj values table
Look up primary dac adj values from the table if
there is no bios or bios dac table to reference.
The lookup table may need to be adjusted for certain
families.
Should fix kernel bug 14945.
Signed-off-by: Alex Deucher <alexdeuc...@gmail.com>
---
drivers/gpu/drm/radeon/radeon_combios.c | 50 +++++++++++++++++++++++++-----
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 1204234..7018f32 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;
}
--
1.5.6.3
0001-drm-radeon-kms-add-primary-dac-adj-values-table.patch
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