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6cfe7ec02e
We don't need the AUX power for the whole duration of the detect, only when we're doing AUX transfers. The AUX transfer function takes its own reference on the AUX power domain already. The two places during detect which access display core registers (not specific to a pipe/port/transcoder) only need the power domain that is required for that access. That power domain is equivalent to the device global power domain on most platforms (enabled whenever we hold a runtime PM reference) except on CHV/VLV where it's equivalent to the display power well. Add a new power domain that reflects the above, and use this at the two spots accessing registers. With that we can avoid taking the AUX reference for the whole duration of the detect function. Put the domains asynchronously to avoid the unneeded on-off-on toggling. Also adapt the idea from with_intel_runtime_pm et al. for making it easy to write short sequences where a display power ref is needed. v2: (Ville) - Add with_intel_display_power() helper to simplify things. - s/bool res/bool is_connected/ Cc: Ville Syrjala <ville.syrjala@linux.intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190509173446.31095-8-imre.deak@intel.com
140 lines
5.3 KiB
C
140 lines
5.3 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2019 Intel Corporation
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*/
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#ifndef __INTEL_RUNTIME_PM_H__
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#define __INTEL_RUNTIME_PM_H__
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#include <linux/stackdepot.h>
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#include <linux/types.h>
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struct drm_i915_private;
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typedef depot_stack_handle_t intel_wakeref_t;
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enum i915_drm_suspend_mode {
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I915_DRM_SUSPEND_IDLE,
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I915_DRM_SUSPEND_MEM,
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I915_DRM_SUSPEND_HIBERNATE,
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};
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void skl_enable_dc6(struct drm_i915_private *dev_priv);
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void gen9_sanitize_dc_state(struct drm_i915_private *dev_priv);
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void bxt_enable_dc9(struct drm_i915_private *dev_priv);
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void bxt_disable_dc9(struct drm_i915_private *dev_priv);
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void gen9_enable_dc5(struct drm_i915_private *dev_priv);
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void intel_runtime_pm_init_early(struct drm_i915_private *dev_priv);
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int intel_power_domains_init(struct drm_i915_private *);
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void intel_power_domains_cleanup(struct drm_i915_private *dev_priv);
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void intel_power_domains_init_hw(struct drm_i915_private *dev_priv, bool resume);
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void intel_power_domains_fini_hw(struct drm_i915_private *dev_priv);
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void icl_display_core_init(struct drm_i915_private *dev_priv, bool resume);
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void icl_display_core_uninit(struct drm_i915_private *dev_priv);
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void intel_power_domains_enable(struct drm_i915_private *dev_priv);
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void intel_power_domains_disable(struct drm_i915_private *dev_priv);
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void intel_power_domains_suspend(struct drm_i915_private *dev_priv,
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enum i915_drm_suspend_mode);
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void intel_power_domains_resume(struct drm_i915_private *dev_priv);
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void hsw_enable_pc8(struct drm_i915_private *dev_priv);
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void hsw_disable_pc8(struct drm_i915_private *dev_priv);
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void bxt_display_core_init(struct drm_i915_private *dev_priv, bool resume);
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void bxt_display_core_uninit(struct drm_i915_private *dev_priv);
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void intel_runtime_pm_enable(struct drm_i915_private *dev_priv);
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void intel_runtime_pm_disable(struct drm_i915_private *dev_priv);
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void intel_runtime_pm_cleanup(struct drm_i915_private *dev_priv);
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const char *
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intel_display_power_domain_str(enum intel_display_power_domain domain);
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bool intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
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enum intel_display_power_domain domain);
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bool __intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
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enum intel_display_power_domain domain);
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intel_wakeref_t intel_display_power_get(struct drm_i915_private *dev_priv,
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enum intel_display_power_domain domain);
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intel_wakeref_t
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intel_display_power_get_if_enabled(struct drm_i915_private *dev_priv,
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enum intel_display_power_domain domain);
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void intel_display_power_put_unchecked(struct drm_i915_private *dev_priv,
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enum intel_display_power_domain domain);
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void __intel_display_power_put_async(struct drm_i915_private *i915,
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enum intel_display_power_domain domain,
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intel_wakeref_t wakeref);
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void intel_display_power_flush_work(struct drm_i915_private *i915);
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#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
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void intel_display_power_put(struct drm_i915_private *dev_priv,
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enum intel_display_power_domain domain,
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intel_wakeref_t wakeref);
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static inline void
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intel_display_power_put_async(struct drm_i915_private *i915,
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enum intel_display_power_domain domain,
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intel_wakeref_t wakeref)
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{
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__intel_display_power_put_async(i915, domain, wakeref);
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}
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#else
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static inline void
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intel_display_power_put(struct drm_i915_private *i915,
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enum intel_display_power_domain domain,
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intel_wakeref_t wakeref)
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{
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intel_display_power_put_unchecked(i915, domain);
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}
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static inline void
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intel_display_power_put_async(struct drm_i915_private *i915,
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enum intel_display_power_domain domain,
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intel_wakeref_t wakeref)
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{
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__intel_display_power_put_async(i915, domain, -1);
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}
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#endif
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#define with_intel_display_power(i915, domain, wf) \
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for ((wf) = intel_display_power_get((i915), (domain)); (wf); \
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intel_display_power_put_async((i915), (domain), (wf)), (wf) = 0)
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void icl_dbuf_slices_update(struct drm_i915_private *dev_priv,
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u8 req_slices);
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intel_wakeref_t intel_runtime_pm_get(struct drm_i915_private *i915);
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intel_wakeref_t intel_runtime_pm_get_if_in_use(struct drm_i915_private *i915);
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intel_wakeref_t intel_runtime_pm_get_noresume(struct drm_i915_private *i915);
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#define with_intel_runtime_pm(i915, wf) \
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for ((wf) = intel_runtime_pm_get(i915); (wf); \
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intel_runtime_pm_put((i915), (wf)), (wf) = 0)
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#define with_intel_runtime_pm_if_in_use(i915, wf) \
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for ((wf) = intel_runtime_pm_get_if_in_use(i915); (wf); \
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intel_runtime_pm_put((i915), (wf)), (wf) = 0)
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void intel_runtime_pm_put_unchecked(struct drm_i915_private *i915);
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#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
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void intel_runtime_pm_put(struct drm_i915_private *i915, intel_wakeref_t wref);
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#else
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static inline void
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intel_runtime_pm_put(struct drm_i915_private *i915, intel_wakeref_t wref)
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{
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intel_runtime_pm_put_unchecked(i915);
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}
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#endif
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#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
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void print_intel_runtime_pm_wakeref(struct drm_i915_private *i915,
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struct drm_printer *p);
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#else
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static inline void print_intel_runtime_pm_wakeref(struct drm_i915_private *i915,
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struct drm_printer *p)
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{
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}
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#endif
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void chv_phy_powergate_lanes(struct intel_encoder *encoder,
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bool override, unsigned int mask);
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bool chv_phy_powergate_ch(struct drm_i915_private *dev_priv, enum dpio_phy phy,
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enum dpio_channel ch, bool override);
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#endif /* __INTEL_RUNTIME_PM_H__ */
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