1 /*
2  *  sst_platform.h - Intel MID Platform driver header file
3  *
4  *  Copyright (C) 2010 Intel Corp
5  *  Author: Vinod Koul <vinod.koul@intel.com>
6  *  Author: Harsha Priya <priya.harsha@intel.com>
7  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
8  *
9  *  This program is free software; you can redistribute it and/or modify
10  *  it under the terms of the GNU General Public License as published by
11  *  the Free Software Foundation; version 2 of the License.
12  *
13  *  This program is distributed in the hope that it will be useful, but
14  *  WITHOUT ANY WARRANTY; without even the implied warranty of
15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  *  General Public License for more details.
17  *
18  *  You should have received a copy of the GNU General Public License along
19  *  with this program; if not, write to the Free Software Foundation, Inc.,
20  *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
21  *
22  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
23  *
24  *
25  */
26 
27 #ifndef __SST_PLATFORMDRV_H__
28 #define __SST_PLATFORMDRV_H__
29 
30 #define SST_MONO		1
31 #define SST_STEREO		2
32 #define SST_MAX_CAP		5
33 
34 #define SST_MIN_RATE		8000
35 #define SST_MAX_RATE		48000
36 #define SST_MIN_CHANNEL		1
37 #define SST_MAX_CHANNEL		5
38 #define SST_MAX_BUFFER		(800*1024)
39 #define SST_MIN_BUFFER		(800*1024)
40 #define SST_MIN_PERIOD_BYTES	32
41 #define SST_MAX_PERIOD_BYTES	SST_MAX_BUFFER
42 #define SST_MIN_PERIODS		2
43 #define SST_MAX_PERIODS		(1024*2)
44 #define SST_FIFO_SIZE		0
45 #define SST_CODEC_TYPE_PCM	1
46 
47 struct pcm_stream_info {
48 	int str_id;
49 	void *mad_substream;
50 	void (*period_elapsed) (void *mad_substream);
51 	unsigned long long buffer_ptr;
52 	int sfreq;
53 };
54 
55 enum sst_drv_status {
56 	SST_PLATFORM_INIT = 1,
57 	SST_PLATFORM_STARTED,
58 	SST_PLATFORM_RUNNING,
59 	SST_PLATFORM_PAUSED,
60 	SST_PLATFORM_DROPPED,
61 };
62 
63 enum sst_controls {
64 	SST_SND_ALLOC =			0x00,
65 	SST_SND_PAUSE =			0x01,
66 	SST_SND_RESUME =		0x02,
67 	SST_SND_DROP =			0x03,
68 	SST_SND_FREE =			0x04,
69 	SST_SND_BUFFER_POINTER =	0x05,
70 	SST_SND_STREAM_INIT =		0x06,
71 	SST_SND_START	 =		0x07,
72 	SST_MAX_CONTROLS =		0x07,
73 };
74 
75 enum sst_stream_ops {
76 	STREAM_OPS_PLAYBACK = 0,
77 	STREAM_OPS_CAPTURE,
78 };
79 
80 enum sst_audio_device_type {
81 	SND_SST_DEVICE_HEADSET = 1,
82 	SND_SST_DEVICE_IHF,
83 	SND_SST_DEVICE_VIBRA,
84 	SND_SST_DEVICE_HAPTIC,
85 	SND_SST_DEVICE_CAPTURE,
86 };
87 
88 /* PCM Parameters */
89 struct sst_pcm_params {
90 	u16 codec;	/* codec type */
91 	u8 num_chan;	/* 1=Mono, 2=Stereo */
92 	u8 pcm_wd_sz;	/* 16/24 - bit*/
93 	u32 reserved;	/* Bitrate in bits per second */
94 	u32 sfreq;	/* Sampling rate in Hz */
95 	u32 ring_buffer_size;
96 	u32 period_count;	/* period elapsed in samples*/
97 	u32 ring_buffer_addr;
98 };
99 
100 struct sst_stream_params {
101 	u32 result;
102 	u32 stream_id;
103 	u8 codec;
104 	u8 ops;
105 	u8 stream_type;
106 	u8 device_type;
107 	struct sst_pcm_params sparams;
108 };
109 
110 struct sst_ops {
111 	int (*open) (struct sst_stream_params *str_param);
112 	int (*device_control) (int cmd, void *arg);
113 	int (*close) (unsigned int str_id);
114 };
115 
116 struct sst_runtime_stream {
117 	int     stream_status;
118 	struct pcm_stream_info stream_info;
119 	struct sst_ops *ops;
120 	spinlock_t	status_lock;
121 };
122 
123 struct sst_device {
124 	char *name;
125 	struct device *dev;
126 	struct sst_ops *ops;
127 };
128 
129 int sst_register_dsp(struct sst_device *sst);
130 int sst_unregister_dsp(struct sst_device *sst);
131 #endif
132