1/*
2 * Line6 Pod HD
3 *
4 * Copyright (C) 2011 Stefan Hajnoczi <stefanha@gmail.com>
5 *
6 *	This program is free software; you can redistribute it and/or
7 *	modify it under the terms of the GNU General Public License as
8 *	published by the Free Software Foundation, version 2.
9 *
10 */
11
12#include <sound/core.h>
13#include <sound/pcm.h>
14
15#include "audio.h"
16#include "driver.h"
17#include "pcm.h"
18#include "podhd.h"
19
20#define PODHD_BYTES_PER_FRAME 6	/* 24bit audio (stereo) */
21
22static struct snd_ratden podhd_ratden = {
23	.num_min = 48000,
24	.num_max = 48000,
25	.num_step = 1,
26	.den = 1,
27};
28
29static struct line6_pcm_properties podhd_pcm_properties = {
30	.snd_line6_playback_hw = {
31				  .info = (SNDRV_PCM_INFO_MMAP |
32					   SNDRV_PCM_INFO_INTERLEAVED |
33					   SNDRV_PCM_INFO_BLOCK_TRANSFER |
34					   SNDRV_PCM_INFO_MMAP_VALID |
35					   SNDRV_PCM_INFO_PAUSE |
36#ifdef CONFIG_PM
37					   SNDRV_PCM_INFO_RESUME |
38#endif
39					   SNDRV_PCM_INFO_SYNC_START),
40				  .formats = SNDRV_PCM_FMTBIT_S24_3LE,
41				  .rates = SNDRV_PCM_RATE_48000,
42				  .rate_min = 48000,
43				  .rate_max = 48000,
44				  .channels_min = 2,
45				  .channels_max = 2,
46				  .buffer_bytes_max = 60000,
47				  .period_bytes_min = 64,
48				  .period_bytes_max = 8192,
49				  .periods_min = 1,
50				  .periods_max = 1024},
51	.snd_line6_capture_hw = {
52				 .info = (SNDRV_PCM_INFO_MMAP |
53					  SNDRV_PCM_INFO_INTERLEAVED |
54					  SNDRV_PCM_INFO_BLOCK_TRANSFER |
55					  SNDRV_PCM_INFO_MMAP_VALID |
56#ifdef CONFIG_PM
57					  SNDRV_PCM_INFO_RESUME |
58#endif
59					  SNDRV_PCM_INFO_SYNC_START),
60				 .formats = SNDRV_PCM_FMTBIT_S24_3LE,
61				 .rates = SNDRV_PCM_RATE_48000,
62				 .rate_min = 48000,
63				 .rate_max = 48000,
64				 .channels_min = 2,
65				 .channels_max = 2,
66				 .buffer_bytes_max = 60000,
67				 .period_bytes_min = 64,
68				 .period_bytes_max = 8192,
69				 .periods_min = 1,
70				 .periods_max = 1024},
71	.snd_line6_rates = {
72			    .nrats = 1,
73			    .rats = &podhd_ratden},
74	.bytes_per_frame = PODHD_BYTES_PER_FRAME
75};
76
77/*
78	POD HD destructor.
79*/
80static void podhd_destruct(struct usb_interface *interface)
81{
82	struct usb_line6_podhd *podhd = usb_get_intfdata(interface);
83
84	if (podhd == NULL)
85		return;
86	line6_cleanup_audio(&podhd->line6);
87}
88
89/*
90	Try to init POD HD device.
91*/
92static int podhd_try_init(struct usb_interface *interface,
93			  struct usb_line6_podhd *podhd)
94{
95	int err;
96	struct usb_line6 *line6 = &podhd->line6;
97
98	if ((interface == NULL) || (podhd == NULL))
99		return -ENODEV;
100
101	/* initialize audio system: */
102	err = line6_init_audio(line6);
103	if (err < 0)
104		return err;
105
106	/* initialize MIDI subsystem: */
107	err = line6_init_midi(line6);
108	if (err < 0)
109		return err;
110
111	/* initialize PCM subsystem: */
112	err = line6_init_pcm(line6, &podhd_pcm_properties);
113	if (err < 0)
114		return err;
115
116	/* register USB audio system: */
117	err = line6_register_audio(line6);
118	return err;
119}
120
121/*
122	Init POD HD device (and clean up in case of failure).
123*/
124int line6_podhd_init(struct usb_interface *interface,
125		     struct usb_line6_podhd *podhd)
126{
127	int err = podhd_try_init(interface, podhd);
128
129	if (err < 0)
130		podhd_destruct(interface);
131
132	return err;
133}
134
135/*
136	POD HD device disconnected.
137*/
138void line6_podhd_disconnect(struct usb_interface *interface)
139{
140	struct usb_line6_podhd *podhd;
141
142	if (interface == NULL)
143		return;
144	podhd = usb_get_intfdata(interface);
145
146	if (podhd != NULL) {
147		struct snd_line6_pcm *line6pcm = podhd->line6.line6pcm;
148
149		if (line6pcm != NULL)
150			line6_pcm_disconnect(line6pcm);
151	}
152
153	podhd_destruct(interface);
154}
155