>From 16de3600adde106fbb6eb828a3fa1b935d938425 Mon Sep 17 00:00:00 2001 From: Alex Deucher <alexdeuc...@gmail.com> Date: Mon, 11 Jan 2010 10:50:18 -0500 Subject: [PATCH] drm/radeon/kms: fix up LVDS handling on macs
Based on radeonfb code and recent ddx fix.
Signed-off-by: Alex Deucher <alexdeuc...@gmail.com>
---
drivers/gpu/drm/radeon/radeon_legacy_encoders.c | 24 +++++++++++++++++++++-
1 files changed, 22 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
index 981508f..f746560 100644
--- a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
@@ -46,6 +46,7 @@ static void radeon_legacy_lvds_dpms(struct
drm_encoder *encoder, int mode)
struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
uint32_t lvds_gen_cntl, lvds_pll_cntl, pixclks_cntl, disp_pwr_man;
int panel_pwr_delay = 2000;
+ bool is_mac = false;
DRM_DEBUG("\n");
if (radeon_encoder->enc_priv) {
@@ -58,6 +59,15 @@ static void radeon_legacy_lvds_dpms(struct
drm_encoder *encoder, int mode)
}
}
+ /* macs (and possibly some x86 oem systems?) wire up LVDS strangely
+ * Taken from radeonfb.
+ */
+ if ((rdev->mode_info.connector_table == CT_IBOOK) ||
+ (rdev->mode_info.connector_table == CT_POWERBOOK_EXTERNAL) ||
+ (rdev->mode_info.connector_table == CT_POWERBOOK_INTERNAL) ||
+ (rdev->mode_info.connector_table == CT_POWERBOOK_VGA))
+ is_mac = true;
+
switch (mode) {
case DRM_MODE_DPMS_ON:
disp_pwr_man = RREG32(RADEON_DISP_PWR_MAN);
@@ -74,6 +84,8 @@ static void radeon_legacy_lvds_dpms(struct
drm_encoder *encoder, int mode)
lvds_gen_cntl = RREG32(RADEON_LVDS_GEN_CNTL);
lvds_gen_cntl |= (RADEON_LVDS_ON | RADEON_LVDS_EN |
RADEON_LVDS_DIGON | RADEON_LVDS_BLON);
+ if (is_mac)
+ lvds_gen_cntl |= RADEON_LVDS_BL_MOD_EN;
lvds_gen_cntl &= ~(RADEON_LVDS_DISPLAY_DIS);
udelay(panel_pwr_delay * 1000);
WREG32(RADEON_LVDS_GEN_CNTL, lvds_gen_cntl);
@@ -85,8 +97,16 @@ static void radeon_legacy_lvds_dpms(struct
drm_encoder *encoder, int mode)
WREG32_PLL_P(RADEON_PIXCLKS_CNTL, 0,
~RADEON_PIXCLK_LVDS_ALWAYS_ONb);
lvds_gen_cntl = RREG32(RADEON_LVDS_GEN_CNTL);
lvds_gen_cntl |= RADEON_LVDS_DISPLAY_DIS;
- lvds_gen_cntl &= ~(RADEON_LVDS_ON | RADEON_LVDS_BLON |
RADEON_LVDS_EN | RADEON_LVDS_DIGON);
- udelay(panel_pwr_delay * 1000);
+ if (is_mac) {
+ lvds_gen_cntl &= ~RADEON_LVDS_BL_MOD_EN;
+ WREG32(RADEON_LVDS_GEN_CNTL, lvds_gen_cntl);
+ udelay(panel_pwr_delay * 1000);
+ lvds_gen_cntl &= ~(RADEON_LVDS_ON | RADEON_LVDS_EN);
+ } else {
+ WREG32(RADEON_LVDS_GEN_CNTL, lvds_gen_cntl);
+ lvds_gen_cntl &= ~(RADEON_LVDS_ON | RADEON_LVDS_BLON |
RADEON_LVDS_EN | RADEON_LVDS_DIGON);
+ udelay(panel_pwr_delay * 1000);
+ }
WREG32(RADEON_LVDS_GEN_CNTL, lvds_gen_cntl);
WREG32_PLL(RADEON_PIXCLKS_CNTL, pixclks_cntl);
break;
--
1.5.6.3
0001-drm-radeon-kms-fix-up-LVDS-handling-on-macs.patch
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