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include/drm/i915_component.h
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/* * Copyright © 2014 Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ #ifndef _I915_COMPONENT_H_ #define _I915_COMPONENT_H_ |
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/* MAX_PORT is the number of port * It must be sync with I915_MAX_PORTS defined i915_drv.h * 5 should be enough as only HSW, BDW, SKL need such fix. */ #define MAX_PORTS 5 |
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/** |
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* struct i915_audio_component_ops - Ops implemented by i915 driver, called by hda driver |
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*/ struct i915_audio_component_ops { |
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/** * @owner: i915 module */ |
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struct module *owner; |
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/** * @get_power: get the POWER_DOMAIN_AUDIO power well * * Request the power well to be turned on. */ |
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void (*get_power)(struct device *); |
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/** * @put_power: put the POWER_DOMAIN_AUDIO power well * * Allow the power well to be turned off. */ |
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void (*put_power)(struct device *); |
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/** * @codec_wake_override: Enable/disable codec wake signal */ |
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void (*codec_wake_override)(struct device *, bool enable); |
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/** * @get_cdclk_freq: Get the Core Display Clock in kHz */ |
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int (*get_cdclk_freq)(struct device *); |
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/** * @sync_audio_rate: set n/cts based on the sample rate * * Called from audio driver. After audio driver sets the * sample rate, it will call this function to set n/cts */ |
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int (*sync_audio_rate)(struct device *, int port, int rate); |
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/** * @get_eld: fill the audio state and ELD bytes for the given port * * Called from audio driver to get the HDMI/DP audio state of the given * digital port, and also fetch ELD bytes to the given pointer. * * It returns the byte size of the original ELD (not the actually * copied size), zero for an invalid ELD, or a negative error code. * * Note that the returned size may be over @max_bytes. Then it * implies that only a part of ELD has been copied to the buffer. */ int (*get_eld)(struct device *, int port, bool *enabled, unsigned char *buf, int max_bytes); |
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}; |
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/** * struct i915_audio_component_audio_ops - Ops implemented by hda driver, called by i915 driver */ |
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struct i915_audio_component_audio_ops { |
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/** * @audio_ptr: Pointer to be used in call to pin_eld_notify */ |
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void *audio_ptr; |
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/** |
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* @pin_eld_notify: Notify the HDA driver that pin sense and/or ELD information has changed * * Called when the i915 driver has set up audio pipeline or has just * begun to tear it down. This allows the HDA driver to update its * status accordingly (even when the HDA controller is in power save * mode). |
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*/ |
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void (*pin_eld_notify)(void *audio_ptr, int port); }; /** |
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* struct i915_audio_component - Used for direct communication between i915 and hda drivers |
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*/ struct i915_audio_component { |
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/** * @dev: i915 device, used as parameter for ops */ |
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struct device *dev; |
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/** * @aud_sample_rate: the array of audio sample rate per port */ |
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int aud_sample_rate[MAX_PORTS]; |
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/** * @ops: Ops implemented by i915 driver, called by hda driver */ |
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const struct i915_audio_component_ops *ops; |
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/** * @audio_ops: Ops implemented by hda driver, called by i915 driver */ |
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const struct i915_audio_component_audio_ops *audio_ops; |
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}; #endif /* _I915_COMPONENT_H_ */ |