drm/vgaarb: add VGA arbitration support to the drm and kms.

[linux-block.git] / drivers / gpu / drm / radeon / r100.c

diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
index 737970b43aef817d5dafd392c9685aa76d50ea65..be51c5f7d0f659f9baa1efaae4dfe662c498d6e5 100644 (file)
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -1955,6 +1955,20 @@ void r100_vram_init_sizes(struct radeon_device *rdev)
                rdev->mc.real_vram_size = rdev->mc.aper_size;
 }
 
+void r100_vga_set_state(struct radeon_device *rdev, bool state)
+{
+       uint32_t temp;
+
+       temp = RREG32(RADEON_CONFIG_CNTL);
+       if (state == false) {
+               temp &= ~(1<<8);
+               temp |= (1<<9);
+       } else {
+               temp &= ~(1<<9);
+       }
+       WREG32(RADEON_CONFIG_CNTL, temp);
+}
+
 void r100_vram_info(struct radeon_device *rdev)
 {
        r100_vram_get_type(rdev);