diff options
Diffstat (limited to 'linux-core/radeon_combios.c')
| -rw-r--r-- | linux-core/radeon_combios.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/linux-core/radeon_combios.c b/linux-core/radeon_combios.c index 02f7335f..200761ee 100644 --- a/linux-core/radeon_combios.c +++ b/linux-core/radeon_combios.c @@ -1301,3 +1301,44 @@ void radeon_combios_asic_init(struct drm_device *dev) combios_parse_mmio_table(dev, table); } + +void radeon_combios_initialize_bios_scratch_regs(struct drm_device *dev) +{ + struct drm_radeon_private *dev_priv = dev->dev_private; + uint32_t bios_0_scratch, bios_6_scratch, bios_7_scratch; + + bios_0_scratch = RADEON_READ(RADEON_BIOS_0_SCRATCH); + bios_6_scratch = RADEON_READ(RADEON_BIOS_6_SCRATCH); + //bios_7_scratch = RADEON_READ(RADEON_BIOS_7_SCRATCH); + + /* let the bios control the backlight */ + bios_0_scratch &= ~RADEON_DRIVER_BRIGHTNESS_EN; + + /* tell the bios not to handle mode switching */ + bios_6_scratch |= (RADEON_DISPLAY_SWITCHING_DIS | + RADEON_ACC_MODE_CHANGE); + + /* tell the bios a driver is loaded */ + //bios_7_scratch |= RADEON_DRV_LOADED; + + RADEON_WRITE(RADEON_BIOS_0_SCRATCH, bios_0_scratch); + RADEON_WRITE(RADEON_BIOS_6_SCRATCH, bios_6_scratch); + //RADEON_WRITE(RADEON_BIOS_7_SCRATCH, bios_7_scratch); +} + +void +radeon_combios_output_lock(struct drm_encoder *encoder, bool lock) +{ + struct drm_device *dev = encoder->dev; + struct drm_radeon_private *dev_priv = dev->dev_private; + uint32_t bios_6_scratch; + + bios_6_scratch = RADEON_READ(RADEON_BIOS_6_SCRATCH); + + if (lock) + bios_6_scratch |= RADEON_DRIVER_CRITICAL; + else + bios_6_scratch &= ~RADEON_DRIVER_CRITICAL; + + RADEON_WRITE(RADEON_BIOS_6_SCRATCH, bios_6_scratch); +} |