1 | /* |
2 | * Copyright (C) 2016 Intel Corporation |
3 | * Authors: Sailaja Bandarupalli <sailaja.bandarupalli@intel.com> |
4 | * Ramesh Babu K V <ramesh.babu@intel.com> |
5 | * Vaibhav Agarwal <vaibhav.agarwal@intel.com> |
6 | * Jerome Anand <jerome.anand@intel.com> |
7 | * |
8 | * Permission is hereby granted, free of charge, to any person obtaining |
9 | * a copy of this software and associated documentation files |
10 | * (the "Software"), to deal in the Software without restriction, |
11 | * including without limitation the rights to use, copy, modify, merge, |
12 | * publish, distribute, sublicense, and/or sell copies of the Software, |
13 | * and to permit persons to whom the Software is furnished to do so, |
14 | * subject to the following conditions: |
15 | * |
16 | * The above copyright notice and this permission notice (including the |
17 | * next paragraph) shall be included in all copies or substantial |
18 | * portions of the Software. |
19 | * |
20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
21 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
22 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
23 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
24 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
25 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
26 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
27 | * SOFTWARE. |
28 | */ |
29 | |
30 | #ifndef _INTEL_HDMI_AUDIO_H_ |
31 | #define _INTEL_HDMI_AUDIO_H_ |
32 | |
33 | #include "intel_hdmi_lpe_audio.h" |
34 | |
35 | #define MAX_PB_STREAMS 1 |
36 | #define MAX_CAP_STREAMS 0 |
37 | #define BYTES_PER_WORD 0x4 |
38 | #define INTEL_HAD "HdmiLpeAudio" |
39 | |
40 | /* |
41 | * CEA speaker placement: |
42 | * |
43 | * FL FLC FC FRC FR |
44 | * |
45 | * LFE |
46 | * |
47 | * RL RLC RC RRC RR |
48 | * |
49 | * The Left/Right Surround channel _notions_ LS/RS in SMPTE 320M |
50 | * corresponds to CEA RL/RR; The SMPTE channel _assignment_ C/LFE is |
51 | * swapped to CEA LFE/FC. |
52 | */ |
53 | enum cea_speaker_placement { |
54 | FL = (1 << 0), /* Front Left */ |
55 | FC = (1 << 1), /* Front Center */ |
56 | FR = (1 << 2), /* Front Right */ |
57 | FLC = (1 << 3), /* Front Left Center */ |
58 | FRC = (1 << 4), /* Front Right Center */ |
59 | RL = (1 << 5), /* Rear Left */ |
60 | RC = (1 << 6), /* Rear Center */ |
61 | RR = (1 << 7), /* Rear Right */ |
62 | RLC = (1 << 8), /* Rear Left Center */ |
63 | RRC = (1 << 9), /* Rear Right Center */ |
64 | LFE = (1 << 10), /* Low Frequency Effect */ |
65 | }; |
66 | |
67 | struct cea_channel_speaker_allocation { |
68 | int ca_index; |
69 | int speakers[8]; |
70 | |
71 | /* derived values, just for convenience */ |
72 | int channels; |
73 | int spk_mask; |
74 | }; |
75 | |
76 | struct channel_map_table { |
77 | unsigned char map; /* ALSA API channel map position */ |
78 | unsigned char cea_slot; /* CEA slot value */ |
79 | int spk_mask; /* speaker position bit mask */ |
80 | }; |
81 | |
82 | struct pcm_stream_info { |
83 | struct snd_pcm_substream *substream; |
84 | int substream_refcount; |
85 | }; |
86 | |
87 | /* |
88 | * struct snd_intelhad - intelhad driver structure |
89 | * |
90 | * @card: ptr to hold card details |
91 | * @connected: the monitor connection status |
92 | * @stream_info: stream information |
93 | * @eld: holds ELD info |
94 | * @curr_buf: pointer to hold current active ring buf |
95 | * @valid_buf_cnt: ring buffer count for stream |
96 | * @had_spinlock: driver lock |
97 | * @aes_bits: IEC958 status bits |
98 | * @buff_done: id of current buffer done intr |
99 | * @dev: platform device handle |
100 | * @chmap: holds channel map info |
101 | */ |
102 | struct snd_intelhad { |
103 | struct snd_intelhad_card *card_ctx; |
104 | bool connected; |
105 | struct pcm_stream_info stream_info; |
106 | unsigned char eld[HDMI_MAX_ELD_BYTES]; |
107 | bool dp_output; |
108 | unsigned int aes_bits; |
109 | spinlock_t had_spinlock; |
110 | struct device *dev; |
111 | struct snd_pcm_chmap *chmap; |
112 | int tmds_clock_speed; |
113 | int link_rate; |
114 | int port; /* fixed */ |
115 | int pipe; /* can change dynamically */ |
116 | |
117 | /* ring buffer (BD) position index */ |
118 | unsigned int bd_head; |
119 | /* PCM buffer position indices */ |
120 | unsigned int pcmbuf_head; /* being processed */ |
121 | unsigned int pcmbuf_filled; /* to be filled */ |
122 | |
123 | unsigned int num_bds; /* number of BDs */ |
124 | unsigned int period_bytes; /* PCM period size in bytes */ |
125 | |
126 | /* internal stuff */ |
127 | union aud_cfg aud_config; /* AUD_CONFIG reg value cache */ |
128 | struct work_struct hdmi_audio_wq; |
129 | struct mutex mutex; /* for protecting chmap and eld */ |
130 | struct snd_jack *jack; |
131 | }; |
132 | |
133 | struct snd_intelhad_card { |
134 | struct snd_card *card; |
135 | struct device *dev; |
136 | |
137 | /* internal stuff */ |
138 | int irq; |
139 | void __iomem *mmio_start; |
140 | int num_pipes; |
141 | int num_ports; |
142 | struct snd_intelhad pcm_ctx[3]; /* one for each port */ |
143 | }; |
144 | |
145 | #endif /* _INTEL_HDMI_AUDIO_ */ |
146 | |