include/drm/i915_component.h

   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  */
  42 struct 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
  51 struct 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  */
  69 struct 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_ */