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drm/i915: clean up interlaced pipeconf bit definitions 

- Clarify which bits are for which chips.
- Note that gen2 can't do interlaced directly (only via dvo tv chips).
- Move the mask to the top to make it clearer how wide this field is.
- Add defintions for all possible values.

This patch doesn't change any code.

v2: Paulo Zanoni pointed out that the pixel doubling modes do no
longer exist on ivb.

Cc: Peter Ross <pross@xvid.org>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Christopher Egert <cme3000@gmail.com>
Tested-by: Alfonso Fiore <alfonso.fiore@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2012-01-28 14:49:19 +01:00
parent 9edd576d89
commit d442ae181b
1 changed files with 14 additions and 3 deletions
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17
drivers/gpu/drm/i915/i915_reg.h
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@ -2387,10 +2387,21 @@
#define PIPECONF_PALETTE 0
#define PIPECONF_GAMMA (1<<24)
#define PIPECONF_FORCE_BORDER (1<<25)
#define PIPECONF_PROGRESSIVE (0 << 21)
#define PIPECONF_INTERLACE_W_FIELD_INDICATION (6 << 21)
#define PIPECONF_INTERLACE_FIELD_0_ONLY (7 << 21)
#define PIPECONF_INTERLACE_MASK (7 << 21)
/* Note that pre-gen3 does not support interlaced display directly. Panel
* fitting must be disabled on pre-ilk for interlaced. */
#define PIPECONF_PROGRESSIVE (0 << 21)
#define PIPECONF_INTERLACE_W_SYNC_SHIFT_PANEL (4 << 21) /* gen4 only */
#define PIPECONF_INTERLACE_W_SYNC_SHIFT (5 << 21) /* gen4 only */
#define PIPECONF_INTERLACE_W_FIELD_INDICATION (6 << 21)
#define PIPECONF_INTERLACE_FIELD_0_ONLY (7 << 21) /* gen3 only */
/* Ironlake and later have a complete new set of values for interlaced. PFIT
* means panel fitter required, PF means progressive fetch, DBL means power
* saving pixel doubling. */
#define PIPECONF_PFIT_PF_INTERLACED_ILK (1 << 21)
#define PIPECONF_INTERLACED_ILK (3 << 21)
#define PIPECONF_INTERLACED_DBL_ILK (4 << 21) /* ilk/snb only */
#define PIPECONF_PFIT_PF_INTERLACED_DBL_ILK (5 << 21) /* ilk/snb only */
#define PIPECONF_CXSR_DOWNCLOCK (1<<16)
#define PIPECONF_BPP_MASK (0x000000e0)
#define PIPECONF_BPP_8 (0<<5)