diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_legacy_encoders.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_legacy_encoders.c | 21 |
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 981508ff7037..38e45e231ef5 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); |