xref: /openbmc/linux/include/drm/intel_lpe_audio.h (revision 2a598d0b)
1 /*
2  * Copyright © 2016 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 _INTEL_LPE_AUDIO_H_
25 #define _INTEL_LPE_AUDIO_H_
26 
27 #include <linux/types.h>
28 #include <linux/spinlock_types.h>
29 
30 struct platform_device;
31 
32 #define HDMI_MAX_ELD_BYTES	128
33 
34 struct intel_hdmi_lpe_audio_port_pdata {
35 	u8 eld[HDMI_MAX_ELD_BYTES];
36 	int port;
37 	int pipe;
38 	int ls_clock;
39 	bool dp_output;
40 };
41 
42 struct intel_hdmi_lpe_audio_pdata {
43 	struct intel_hdmi_lpe_audio_port_pdata port[3]; /* for ports B,C,D */
44 	int num_ports;
45 	int num_pipes;
46 
47 	void (*notify_audio_lpe)(struct platform_device *pdev, int port); /* port: 0==B,1==C,2==D */
48 	spinlock_t lpe_audio_slock;
49 };
50 
51 #endif /* _I915_LPE_AUDIO_H_ */
52