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i915_component.h revision 1.2.6.2 
      1 /*	$NetBSD: i915_component.h,v 1.2.6.2 2019/06/10 22:08:29 christos Exp $	*/
      2 
      3 /*
      4  * Copyright  2014 Intel Corporation
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice (including the next
     14  * paragraph) shall be included in all copies or substantial portions of the
     15  * Software.
     16  *
     17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     22  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
     23  * IN THE SOFTWARE.
     24  */
     25 
     26 #ifndef _I915_COMPONENT_H_
     27 #define _I915_COMPONENT_H_
     28 
     29 /* MAX_PORT is the number of port
     30  * It must be sync with I915_MAX_PORTS defined i915_drv.h
     31  * 5 should be enough as only HSW, BDW, SKL need such fix.
     32  */
     33 #define MAX_PORTS 5
     34 
     35 /**
     36  * struct i915_audio_component_ops - callbacks defined in gfx driver
     37  * @owner: the module owner
     38  * @get_power: get the POWER_DOMAIN_AUDIO power well
     39  * @put_power: put the POWER_DOMAIN_AUDIO power well
     40  * @codec_wake_override: Enable/Disable generating the codec wake signal
     41  * @get_cdclk_freq: get the Core Display Clock in KHz
     42  * @sync_audio_rate: set n/cts based on the sample rate
     43  */
     44 struct i915_audio_component_ops {
     45 	struct module *owner;
     46 	void (*get_power)(struct device *);
     47 	void (*put_power)(struct device *);
     48 	void (*codec_wake_override)(struct device *, bool enable);
     49 	int (*get_cdclk_freq)(struct device *);
     50 	int (*sync_audio_rate)(struct device *, int port, int rate);
     51 };
     52 
     53 struct i915_audio_component_audio_ops {
     54 	void *audio_ptr;
     55 	/**
     56 	 * Call from i915 driver, notifying the HDA driver that
     57 	 * pin sense and/or ELD information has changed.
     58 	 * @audio_ptr:		HDA driver object
     59 	 * @port:	Which port has changed (PORTA / PORTB / PORTC etc)
     60 	 */
     61 	void (*pin_eld_notify)(void *audio_ptr, int port);
     62 };
     63 
     64 /**
     65  * struct i915_audio_component - used for audio video interaction
     66  * @dev: the device from gfx driver
     67  * @aud_sample_rate: the array of audio sample rate per port
     68  * @ops: callback for audio driver calling
     69  * @audio_ops: Call from i915 driver
     70  */
     71 struct i915_audio_component {
     72 	struct device *dev;
     73 	int aud_sample_rate[MAX_PORTS];
     74 
     75 	const struct i915_audio_component_ops *ops;
     76 
     77 	const struct i915_audio_component_audio_ops *audio_ops;
     78 };
     79 
     80 #endif /* _I915_COMPONENT_H_ */
     81