On 09/04/2015 06:55 AM, Jani Nikula wrote:
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@xxxxxxxxx>
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_panel.c | 13 -------------
1 file changed, 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;
Reviewed-by: Clint Taylor <Clinton.A.Taylor@xxxxxxxxx>
Tested-by: Clint Taylor <Clinton.A.Taylor@xxxxxxxxx>
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