47f16fe535
Move intel_display_power_well_is_enabled() to intel_power_well.c, as a step towards making the low-level power well internals (i915_power_well_ops/desc structs) hidden. Eventually the call to this function and in general accessing power wells directly from elsewhere in the driver should be replaced by the use of power domains. No functional change. Suggested-by: Jani Nikula <jani.nikula@intel.com> Cc: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Jouni Högander <jouni.hogander@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220222165137.1004194-9-imre.deak@intel.com
114 lines
3.0 KiB
C
114 lines
3.0 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright © 2022 Intel Corporation
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*/
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#include "i915_drv.h"
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#include "intel_display_power_well.h"
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struct i915_power_well *
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lookup_power_well(struct drm_i915_private *i915,
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enum i915_power_well_id power_well_id)
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{
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struct i915_power_well *power_well;
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for_each_power_well(i915, power_well)
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if (power_well->desc->id == power_well_id)
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return power_well;
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/*
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* It's not feasible to add error checking code to the callers since
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* this condition really shouldn't happen and it doesn't even make sense
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* to abort things like display initialization sequences. Just return
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* the first power well and hope the WARN gets reported so we can fix
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* our driver.
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*/
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drm_WARN(&i915->drm, 1,
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"Power well %d not defined for this platform\n",
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power_well_id);
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return &i915->power_domains.power_wells[0];
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}
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void intel_power_well_enable(struct drm_i915_private *i915,
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struct i915_power_well *power_well)
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{
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drm_dbg_kms(&i915->drm, "enabling %s\n", power_well->desc->name);
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power_well->desc->ops->enable(i915, power_well);
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power_well->hw_enabled = true;
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}
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void intel_power_well_disable(struct drm_i915_private *i915,
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struct i915_power_well *power_well)
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{
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drm_dbg_kms(&i915->drm, "disabling %s\n", power_well->desc->name);
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power_well->hw_enabled = false;
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power_well->desc->ops->disable(i915, power_well);
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}
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void intel_power_well_sync_hw(struct drm_i915_private *i915,
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struct i915_power_well *power_well)
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{
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power_well->desc->ops->sync_hw(i915, power_well);
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power_well->hw_enabled =
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power_well->desc->ops->is_enabled(i915, power_well);
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}
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void intel_power_well_get(struct drm_i915_private *i915,
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struct i915_power_well *power_well)
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{
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if (!power_well->count++)
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intel_power_well_enable(i915, power_well);
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}
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void intel_power_well_put(struct drm_i915_private *i915,
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struct i915_power_well *power_well)
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{
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drm_WARN(&i915->drm, !power_well->count,
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"Use count on power well %s is already zero",
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power_well->desc->name);
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if (!--power_well->count)
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intel_power_well_disable(i915, power_well);
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}
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bool intel_power_well_is_enabled(struct drm_i915_private *i915,
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struct i915_power_well *power_well)
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{
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return power_well->desc->ops->is_enabled(i915, power_well);
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}
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bool intel_power_well_is_enabled_cached(struct i915_power_well *power_well)
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{
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return power_well->hw_enabled;
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}
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bool intel_display_power_well_is_enabled(struct drm_i915_private *dev_priv,
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enum i915_power_well_id power_well_id)
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{
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struct i915_power_well *power_well;
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power_well = lookup_power_well(dev_priv, power_well_id);
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return intel_power_well_is_enabled(dev_priv, power_well);
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}
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bool intel_power_well_is_always_on(struct i915_power_well *power_well)
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{
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return power_well->desc->always_on;
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}
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const char *intel_power_well_name(struct i915_power_well *power_well)
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{
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return power_well->desc->name;
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}
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u64 intel_power_well_domains(struct i915_power_well *power_well)
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{
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return power_well->desc->domains;
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}
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int intel_power_well_refcount(struct i915_power_well *power_well)
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{
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return power_well->count;
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}
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