LXR linux/include/drm/i915

   1/*
   2 * Copyright © 2014 Intel Corporation
   3 *
   4 * Permission is hereby granted, free of charge, to any person obtaining a
   5 * copy of this software and associated documentation files (the "Software"),
   6 * to deal in the Software without restriction, including without limitation
   7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 * and/or sell copies of the Software, and to permit persons to whom the
   9 * Software is furnished to do so, subject to the following conditions:
  10 *
  11 * The above copyright notice and this permission notice (including the next
  12 * paragraph) shall be included in all copies or substantial portions of the
  13 * Software.
  14 *
  15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21 * IN THE SOFTWARE.
  22 */
  23
  24#ifndef _I915_COMPONENT_H_
  25#define _I915_COMPONENT_H_
  26
  27/* MAX_PORT is the number of port
  28 * It must be sync with I915_MAX_PORTS defined i915_drv.h
  29 * 5 should be enough as only HSW, BDW, SKL need such fix.
  30 */
  31#define MAX_PORTS 5
  32
  33/**
  34 * struct i915_audio_component_ops - callbacks defined in gfx driver
  35 * @owner: the module owner
  36 * @get_power: get the POWER_DOMAIN_AUDIO power well
  37 * @put_power: put the POWER_DOMAIN_AUDIO power well
  38 * @codec_wake_override: Enable/Disable generating the codec wake signal
  39 * @get_cdclk_freq: get the Core Display Clock in KHz
  40 * @sync_audio_rate: set n/cts based on the sample rate
  41 */
  42struct i915_audio_component_ops {
  43        struct module *owner;
  44        void (*get_power)(struct device *);
  45        void (*put_power)(struct device *);
  46        void (*codec_wake_override)(struct device *, bool enable);
  47        int (*get_cdclk_freq)(struct device *);
  48        int (*sync_audio_rate)(struct device *, int port, int rate);
  49};
  50
  51struct i915_audio_component_audio_ops {
  52        void *audio_ptr;
  53        /**
  54         * Call from i915 driver, notifying the HDA driver that
  55         * pin sense and/or ELD information has changed.
  56         * @audio_ptr:          HDA driver object
  57         * @port:       Which port has changed (PORTA / PORTB / PORTC etc)
  58         */
  59        void (*pin_eld_notify)(void *audio_ptr, int port);
  60};
  61
  62/**
  63 * struct i915_audio_component - used for audio video interaction
  64 * @dev: the device from gfx driver
  65 * @aud_sample_rate: the array of audio sample rate per port
  66 * @ops: callback for audio driver calling
  67 * @audio_ops: Call from i915 driver
  68 */
  69struct i915_audio_component {
  70        struct device *dev;
  71        int aud_sample_rate[MAX_PORTS];
  72
  73        const struct i915_audio_component_ops *ops;
  74
  75        const struct i915_audio_component_audio_ops *audio_ops;
  76};
  77
  78#endif /* _I915_COMPONENT_H_ */
  79