Re: [PATCH 3/6] drm/i915: Introduce i9xx_has_pps()

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On 18/03/2019 16:56, Ville Syrjala wrote:
From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

Add a small helper to determine if we have the panel power
sequencer or not. We'll make PNV an exceptional case so
that we can unset .is_mobile for the desktop variant.

Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxxxxx>
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
  drivers/gpu/drm/i915/intel_display.c | 10 +++++++++-
  1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 0ddd83dbd768..2ba61181746d 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1441,6 +1441,14 @@ static void chv_enable_pll(struct intel_crtc *crtc,
  	}
  }
+static bool i9xx_has_pps(struct drm_i915_private *dev_priv)
+{
+	if (IS_I830(dev_priv))
+		return false;
+
+	return IS_PINEVIEW(dev_priv) || IS_MOBILE(dev_priv);
+}
+
  static void i9xx_enable_pll(struct intel_crtc *crtc,
  			    const struct intel_crtc_state *crtc_state)
  {
@@ -1452,7 +1460,7 @@ static void i9xx_enable_pll(struct intel_crtc *crtc,
  	assert_pipe_disabled(dev_priv, crtc->pipe);
/* PLL is protected by panel, make sure we can write it */
-	if (IS_MOBILE(dev_priv) && !IS_I830(dev_priv))
+	if (i9xx_has_pps(dev_priv))
  		assert_panel_unlocked(dev_priv, crtc->pipe);
/*


Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>

Regards,

Tvrtko
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