diff options
| author | Jesse Barnes <jbarnes@virtuousgeek.org> | 2013-11-05 01:48:12 +0400 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-11-05 22:28:18 +0400 |
| commit | 30a970c6a6ff734eda7cefe7e88f030157a6c939 (patch) | |
| tree | 1fa4673e734c5e3f57288b97002de82a3ab9f39f /drivers/gpu/drm/i915/intel_i2c.c | |
| parent | 85b1d7b3f475c6425707b2e064f9c0f54058019d (diff) | |
| download | linux-30a970c6a6ff734eda7cefe7e88f030157a6c939.tar.xz | |
drm/i915/vlv: modeset_global_* for VLV v7
On VLV/BYT, we can adjust the CDclk frequency up or down based on the
max pixel clock we need to drive. Lowering it can save power, while
raising it is necessary to support high resolution.
Add a new callback in modeset_affected_pipes and a
modeset_global_resources function to perform this adjustment as
necessary.
v2: use punit interface for 320 and 266 MHz CDclk adjustments (Ville)
v3: reset GMBUS dividers too, since we changed CDclk (Ville)
v4: jump to highest voltage when going to 400MHz CDclk (Jesse)
v5: drop duplicate define (Ville)
use shifts by 1 for fixed point (Ville)
drop new callback (Daniel)
v6: fixup adjusted_mode.clock -> adjusted_mode.crtc_clock again (Ville)
document Bunit reg access better (Ville)
v7: pass modeset_pipes and pipe_config to global_pipes so we get the right
clock data (Ville)
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_i2c.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_i2c.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c index 2ca17b14b6c1..1263409d00b3 100644 --- a/drivers/gpu/drm/i915/intel_i2c.c +++ b/drivers/gpu/drm/i915/intel_i2c.c @@ -87,10 +87,6 @@ static void gmbus_set_freq(struct drm_i915_private *dev_priv) BUG_ON(!IS_VALLEYVIEW(dev_priv->dev)); - /* Skip setting the gmbus freq if BIOS has already programmed it */ - if (I915_READ(GMBUSFREQ_VLV) != 0xA0) - return; - /* Obtain SKU information */ mutex_lock(&dev_priv->dpio_lock); hpll_freq = |