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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_ /* 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 /** * struct i915_audio_component_ops - callbacks defined in gfx driver * @owner: the module owner * @get_power: get the POWER_DOMAIN_AUDIO power well * @put_power: put the POWER_DOMAIN_AUDIO power well * @codec_wake_override: Enable/Disable generating the codec wake signal * @get_cdclk_freq: get the Core Display Clock in KHz * @sync_audio_rate: set n/cts based on the sample rate */ struct i915_audio_component_ops { struct module *owner; void (*get_power)(struct device *); void (*put_power)(struct device *); void (*codec_wake_override)(struct device *, bool enable); int (*get_cdclk_freq)(struct device *); int (*sync_audio_rate)(struct device *, int port, int pipe, int rate); /** * @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, int pipe, bool *enabled, unsigned char *buf, int max_bytes); }; struct i915_audio_component_audio_ops { void *audio_ptr; /** * Call from i915 driver, notifying the HDA driver that * pin sense and/or ELD information has changed. * @audio_ptr: HDA driver object * @port: Which port has changed (PORTA / PORTB / PORTC etc) */ void (*pin_eld_notify)(void *audio_ptr, int port, int pipe); }; /** * struct i915_audio_component - used for audio video interaction * @dev: the device from gfx driver * @aud_sample_rate: the array of audio sample rate per port * @ops: callback for audio driver calling * @audio_ops: Call from i915 driver */ struct i915_audio_component { struct device *dev; int aud_sample_rate[MAX_PORTS]; const struct i915_audio_component_ops *ops; const struct i915_audio_component_audio_ops *audio_ops; }; #endif /* _I915_COMPONENT_H_ */