summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_legacy_encoders.c')
-rw-r--r--drivers/gpu/drm/radeon/radeon_legacy_encoders.c21
1 files changed, 20 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
index 981508ff703..38e45e231ef 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);
@@ -85,7 +97,14 @@ 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);
+ if (is_mac) {
+ lvds_gen_cntl &= ~RADEON_LVDS_BL_MOD_EN;
+ WREG32(RADEON_LVDS_GEN_CNTL, lvds_gen_cntl);
+ 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);