diff options
| author | Jani Nikula <jani.nikula@intel.com> | 2015-09-04 16:55:15 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-09-07 19:29:56 +0300 |
| commit | 4a999d253195db87f18215049cf7a44f795f4ca0 (patch) | |
| tree | 420408645ec14296995f419ce7047067d7afc15e /drivers/gpu/drm | |
| parent | aa17cdb4f8367875d3a53c41e004fc02e983e317 (diff) | |
| download | linux-4a999d253195db87f18215049cf7a44f795f4ca0.tar.xz | |
drm/i915: don't hard code vlv backlight frequency if unset
Fall back to VBT based backlight modulation frequency if it's not
set. Do not hard code.
This could be a problem if there is no VBT.
Cc: Clint Taylor <clinton.a.taylor@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Clint Taylor <Clinton.A.Taylor@intel.com>
Reviewed-by: Clint Taylor <Clinton.A.Taylor@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_panel.c | 13 |
1 files changed, 0 insertions, 13 deletions
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c index d3a312c409eb..2034438a0664 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -1532,21 +1532,8 @@ static int vlv_setup_backlight(struct intel_connector *connector, enum pipe pipe struct drm_device *dev = connector->base.dev; struct drm_i915_private *dev_priv = dev->dev_private; struct intel_panel *panel = &connector->panel; - enum pipe p; u32 ctl, ctl2, val; - for_each_pipe(dev_priv, p) { - u32 cur_val = I915_READ(VLV_BLC_PWM_CTL(p)); - - /* Skip if the modulation freq is already set */ - if (cur_val & ~BACKLIGHT_DUTY_CYCLE_MASK) - continue; - - cur_val &= BACKLIGHT_DUTY_CYCLE_MASK; - I915_WRITE(VLV_BLC_PWM_CTL(p), (0xf42 << 16) | - cur_val); - } - if (WARN_ON(pipe != PIPE_A && pipe != PIPE_B)) return -ENODEV; |