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 struct i915_audio_component {
  28         struct device *dev;
  29
  30         const struct i915_audio_component_ops {
  31                 struct module *owner;
  32                 void (*get_power)(struct device *);
  33                 void (*put_power)(struct device *);
  34                 void (*codec_wake_override)(struct device *, bool enable);
  35                 int (*get_cdclk_freq)(struct device *);
  36                 /**
  37                  * @sync_audio_rate: set n/cts based on the sample rate
  38                  *
  39                  * Called from audio driver. After audio driver sets the
  40                  * sample rate, it will call this function to set n/cts
  41                  */
  42                 int (*sync_audio_rate)(struct device *, int port, int rate);
  43         } *ops;
  44
  45         const struct i915_audio_component_audio_ops {
  46                 void *audio_ptr;
  47                 /**
  48                  * Call from i915 driver, notifying the HDA driver that
  49                  * pin sense and/or ELD information has changed.
  50                  * @audio_ptr:          HDA driver object
  51                  * @port:               Which port has changed (PORTA / PORTB / PORTC etc)
  52                  */
  53                 void (*pin_eld_notify)(void *audio_ptr, int port);
  54         } *audio_ops;
  55 };
  56
  57 #endif /* _I915_COMPONENT_H_ */