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drm/i915: Document the inteded use of requested_mode 

Try to clarify the purpose of requested_mode.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2013-09-04 18:25:29 +03:00 committed by Daniel Vetter
parent 9084e7d276
commit 5113bc9b23
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/i915/intel_drv.h
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@ -211,6 +211,11 @@ struct intel_crtc_config {
#define PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS (1<<0) /* unreliable sync mode.flags */
unsigned long quirks;
/* User requested mode, only valid as a starting point to
* compute adjusted_mode, except in the case of (S)DVO where
* it's also for the output timings of the (S)DVO chip.
* adjusted_mode will then correspond to the S(DVO) chip's
* preferred input timings. */
struct drm_display_mode requested_mode;
/* Actual pipe timings ie. what we program into the pipe timing
* registers. adjusted_mode.clock is the pipe pixel clock. */