drm/radeon/kms: add initial Evergreen support (Radeon HD 5xxx)
This adds initial Evergreen KMS support, it doesn't include
any acceleration features or interrupt handling yet.
Major changes are DCE4 handling for PLLs for the > 2 crtcs.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_clocks.c b/drivers/gpu/drm/radeon/radeon_clocks.c
index 3ec94a0..f64936c 100644
--- a/drivers/gpu/drm/radeon/radeon_clocks.c
+++ b/drivers/gpu/drm/radeon/radeon_clocks.c
@@ -96,6 +96,7 @@
struct radeon_device *rdev = dev->dev_private;
struct radeon_pll *p1pll = &rdev->clock.p1pll;
struct radeon_pll *p2pll = &rdev->clock.p2pll;
+ struct radeon_pll *dcpll = &rdev->clock.dcpll;
struct radeon_pll *spll = &rdev->clock.spll;
struct radeon_pll *mpll = &rdev->clock.mpll;
int ret;
@@ -204,6 +205,17 @@
p2pll->max_frac_feedback_div = 0;
}
+ /* dcpll is DCE4 only */
+ dcpll->min_post_div = 2;
+ dcpll->max_post_div = 0x7f;
+ dcpll->min_frac_feedback_div = 0;
+ dcpll->max_frac_feedback_div = 9;
+ dcpll->min_ref_div = 2;
+ dcpll->max_ref_div = 0x3ff;
+ dcpll->min_feedback_div = 4;
+ dcpll->max_feedback_div = 0xfff;
+ dcpll->best_vco = 0;
+
p1pll->min_ref_div = 2;
p1pll->max_ref_div = 0x3ff;
p1pll->min_feedback_div = 4;