提交 cd02ac52 编写于 作者: P Patrik Jakobsson 提交者: Imre Deak

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

v2: Add explanation of the fixed power well bits (Imre)
Signed-off-by: NPatrik Jakobsson <patrik.jakobsson@linux.intel.com>
Reviewed-by: NImre Deak <imre.deak@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1447682467-6237-2-git-send-email-patrik.jakobsson@linux.intel.com
上级 b450e177
...@@ -609,6 +609,7 @@ ...@@ -609,6 +609,7 @@
/* See the PUNIT HAS v0.8 for the below bits */ /* See the PUNIT HAS v0.8 for the below bits */
enum punit_power_well { 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_RENDER = 0,
PUNIT_POWER_WELL_MEDIA = 1, PUNIT_POWER_WELL_MEDIA = 1,
PUNIT_POWER_WELL_DISP2D = 3, PUNIT_POWER_WELL_DISP2D = 3,
...@@ -621,10 +622,12 @@ enum punit_power_well { ...@@ -621,10 +622,12 @@ enum punit_power_well {
PUNIT_POWER_WELL_DPIO_RX1 = 11, PUNIT_POWER_WELL_DPIO_RX1 = 11,
PUNIT_POWER_WELL_DPIO_CMN_D = 12, PUNIT_POWER_WELL_DPIO_CMN_D = 12,
/* Not actual bit groups. Used as IDs for lookup_power_well() */
PUNIT_POWER_WELL_ALWAYS_ON, PUNIT_POWER_WELL_ALWAYS_ON,
}; };
enum skl_disp_power_wells { 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_MISC_IO,
SKL_DISP_PW_DDI_A_E, SKL_DISP_PW_DDI_A_E,
SKL_DISP_PW_DDI_B, SKL_DISP_PW_DDI_B,
...@@ -633,6 +636,7 @@ enum skl_disp_power_wells { ...@@ -633,6 +636,7 @@ enum skl_disp_power_wells {
SKL_DISP_PW_1 = 14, SKL_DISP_PW_1 = 14,
SKL_DISP_PW_2, SKL_DISP_PW_2,
/* Not actual bit groups. Used as IDs for lookup_power_well() */
SKL_DISP_PW_ALWAYS_ON, SKL_DISP_PW_ALWAYS_ON,
}; };
......
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