drm/i915: Added debugfs support for PSR Status

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Adding support for PSR Status, PSR entry counter and performance counters.
Heavily based on initial work from Shobhit.

v2: Fix PSR Status Link bits by Paulo Zanoni.
v3: Prefer seq_puts to seq_printf by Paulo Zanoni.
v4: Fix identation by Paulo Zanoni.
v5: Return earlier if it isn't Haswell in order to avoid reading non-existing
    registers - by Paulo Zanoni.

CC: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Credits-by: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Reviewed-by: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Rodrigo Vivi 2013-07-11 18:44:59 -03:00 • committed by Daniel Vetter

parent 2b28bb1b64

commit e91fd8c6de

2 changed files with 119 additions and 0 deletions

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95

drivers/gpu/drm/i915/i915_debugfs.c

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24

drivers/gpu/drm/i915/i915_reg.h

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