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drm/i915: Explain usage of power well IDs vs bit groups

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v2: Add explanation of the fixed power well bits (Imre)

Signed-off-by: Patrik Jakobsson <patrik.jakobsson@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1447682467-6237-2-git-send-email-patrik.jakobsson@linux.intel.com
This commit is contained in:
Patrik Jakobsson 2015-11-16 15:01:05 +01:00 committed by Imre Deak
parent b450e1778e
commit cd02ac52eb
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/i915/i915_reg.h
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@ -609,6 +609,7 @@
/* See the PUNIT HAS v0.8 for the below bits */
enum punit_power_well {
/* These numbers are fixed and must match the position of the pw bits */
PUNIT_POWER_WELL_RENDER = 0,
PUNIT_POWER_WELL_MEDIA = 1,
PUNIT_POWER_WELL_DISP2D = 3,
@ -621,10 +622,12 @@ enum punit_power_well {
PUNIT_POWER_WELL_DPIO_RX1 = 11,
PUNIT_POWER_WELL_DPIO_CMN_D = 12,
/* Not actual bit groups. Used as IDs for lookup_power_well() */
PUNIT_POWER_WELL_ALWAYS_ON,
};
enum skl_disp_power_wells {
/* These numbers are fixed and must match the position of the pw bits */
SKL_DISP_PW_MISC_IO,
SKL_DISP_PW_DDI_A_E,
SKL_DISP_PW_DDI_B,
@ -633,6 +636,7 @@ enum skl_disp_power_wells {
SKL_DISP_PW_1 = 14,
SKL_DISP_PW_2,
/* Not actual bit groups. Used as IDs for lookup_power_well() */
SKL_DISP_PW_ALWAYS_ON,
};