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drm/i915: Sanitize the port -> DDI/AUX power domain mapping for each platform

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Atm the port -> DDI and AUX power domain mapping is specified by relying
on the aliasing of the platform specific intel_display_power_domain enum
values. For instance D12+ platforms refer to the 'D' port and power
domain instances, which doesn't match the bspec terminology, on these
platforms the corresponding port is TC1. To make it clear what
port/domain the code refers to add a mapping between them which matches
the bspec terms on different display versions.

This also allows for removing the aliasing in enum values in a follow-up
patch.

v2: Add the functions to intel_display_power.c, use
    intel_display_power_ prefix.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220414210657.1785773-14-imre.deak@intel.com
This commit is contained in:
Imre Deak
2022-04-15 00:06:53 +03:00
parent eb6dedcc19
commit 979e1b32e0
8 changed files with 235 additions and 89 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/gpu/drm/i915/display/intel_display_power.h
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@@ -8,8 +8,10 @@
#include "intel_runtime_pm.h"
enum aux_ch;
enum dpio_channel;
enum dpio_phy;
enum port;
struct drm_i915_private;
struct i915_power_well;
struct intel_encoder;
@@ -130,6 +132,7 @@ enum intel_display_power_domain {
POWER_DOMAIN_INIT,
POWER_DOMAIN_NUM,
POWER_DOMAIN_INVALID = POWER_DOMAIN_NUM,
};
#define POWER_DOMAIN_PIPE(pipe) ((pipe) + POWER_DOMAIN_PIPE_A)
@@ -266,6 +269,15 @@ intel_display_power_put_all_in_set(struct drm_i915_private *i915,
void intel_display_power_debug(struct drm_i915_private *i915, struct seq_file *m);
enum intel_display_power_domain
intel_display_power_ddi_lanes_domain(struct drm_i915_private *i915, enum port port);
enum intel_display_power_domain
intel_display_power_ddi_io_domain(struct drm_i915_private *i915, enum port port);
enum intel_display_power_domain
intel_display_power_legacy_aux_domain(struct drm_i915_private *i915, enum aux_ch aux_ch);
enum intel_display_power_domain
intel_display_power_tbt_aux_domain(struct drm_i915_private *i915, enum aux_ch aux_ch);
/*
* FIXME: We should probably switch this to a 0-based scheme to be consistent
* with how we now name/number DBUF_CTL instances.