drm/radeon/kms: update new pll algo
- add support for pre-avivo chips
- add support for fixed post/ref dividers
- add support for non-fractional fb dividers
By default avivo chips use the new algo and
pre-avivo chips use the old algo. Use the "new_pll"
module option to toggle between them.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index 0ec6934..dd9fdf5 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -438,12 +438,16 @@
/* select the PLL algo */
if (ASIC_IS_AVIVO(rdev)) {
- if (radeon_new_pll)
- pll->algo = PLL_ALGO_AVIVO;
+ if (radeon_new_pll == 0)
+ pll->algo = PLL_ALGO_LEGACY;
+ else
+ pll->algo = PLL_ALGO_NEW;
+ } else {
+ if (radeon_new_pll == 1)
+ pll->algo = PLL_ALGO_NEW;
else
pll->algo = PLL_ALGO_LEGACY;
- } else
- pll->algo = PLL_ALGO_LEGACY;
+ }
if (ASIC_IS_AVIVO(rdev)) {
if ((rdev->family == CHIP_RS600) ||