linux-kernel - Re: [Intel-gfx] [PATCH 4/7] drm/i915: Let panel power sequencing hardware do its job

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Date:	Wed, 02 Nov 2011 10:37:07 -0700
From:	Keith Packard <keithp@...thp.com>
To:	Jesse Barnes <jbarnes@...tuousgeek.org>
Cc:	intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org
Subject: Re: [Intel-gfx] [PATCH 4/7] drm/i915: Let panel power sequencing hardware do its job

On Wed, 2 Nov 2011 09:23:10 -0700, Jesse Barnes <jbarnes@...tuousgeek.org> wrote:

> Note that PP_READY will incorrectly depend on some other register
> values, so in some configs the panel will happily power up even if
> PP_READY isn't set yet...

Here's the new version of that chunk:

@@ -906,32 +905,56 @@ intel_dp_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
        }
 }
 
-static void ironlake_wait_panel_off(struct intel_dp *intel_dp)
+#define IDLE_ON_MASK           (PP_ON | 0        | PP_SEQUENCE_MASK | 0                     | PP_SEQUENCE_STATE_MASK)
+#define IDLE_ON_VALUE          (PP_ON | 0        | PP_SEQUENCE_NONE | 0                     | PP_SEQUENCE_STATE_ON_IDLE)
+
+#define IDLE_OFF_MASK          (PP_ON | 0        | PP_SEQUENCE_MASK | 0                     | PP_SEQUENCE_STATE_MASK)
+#define IDLE_OFF_VALUE         (0     | 0        | PP_SEQUENCE_NONE | 0                     | PP_SEQUENCE_STATE_OFF_IDLE)
+
+#define IDLE_CYCLE_MASK                (PP_ON | 0        | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK)
+#define IDLE_CYCLE_VALUE       (0     | 0        | PP_SEQUENCE_NONE | 0                     | PP_SEQUENCE_STATE_OFF_IDLE)
+
+static void ironlake_wait_panel_status(struct intel_dp *intel_dp,
+                                      u32 mask,
+                                      u32 value)
 {


-- 
keith.packard@...el.com

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