Commit | Line | Data |
---|---|---|
120db2cb TL |
1 | /* |
2 | * linux/include/asm-arm/arch-omap/omap-alsa.h | |
3 | * | |
4 | * Alsa Driver for AIC23 and TSC2101 codecs on OMAP platform boards. | |
5 | * | |
6 | * Copyright (C) 2006 Mika Laitio <lamikr@cc.jyu.fi> | |
7 | * | |
8 | * Copyright (C) 2005 Instituto Nokia de Tecnologia - INdT - Manaus Brazil | |
9 | * Written by Daniel Petrini, David Cohen, Anderson Briglia | |
10 | * {daniel.petrini, david.cohen, anderson.briglia}@indt.org.br | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by the | |
14 | * Free Software Foundation; either version 2 of the License, or (at your | |
15 | * option) any later version. | |
16 | * | |
17 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
19 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN | |
20 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF | |
23 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON | |
24 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
27 | * | |
28 | * You should have received a copy of the GNU General Public License along | |
29 | * with this program; if not, write to the Free Software Foundation, Inc., | |
30 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
31 | * | |
32 | * History | |
33 | * ------- | |
34 | * | |
35 | * 2005/07/25 INdT-10LE Kernel Team - Alsa driver for omap osk, | |
36 | * original version based in sa1100 driver | |
37 | * and omap oss driver. | |
38 | */ | |
39 | ||
40 | #ifndef __OMAP_ALSA_H | |
41 | #define __OMAP_ALSA_H | |
42 | ||
120db2cb TL |
43 | #include <asm/arch/dma.h> |
44 | #include <sound/core.h> | |
45 | #include <sound/pcm.h> | |
46 | #include <asm/arch/mcbsp.h> | |
47 | #include <linux/platform_device.h> | |
48 | ||
49 | #define DMA_BUF_SIZE (1024 * 8) | |
50 | ||
51 | /* | |
52 | * Buffer management for alsa and dma | |
53 | */ | |
54 | struct audio_stream { | |
55 | char *id; /* identification string */ | |
56 | int stream_id; /* numeric identification */ | |
57 | int dma_dev; /* dma number of that device */ | |
58 | int *lch; /* Chain of channels this stream is linked to */ | |
59 | char started; /* to store if the chain was started or not */ | |
60 | int dma_q_head; /* DMA Channel Q Head */ | |
61 | int dma_q_tail; /* DMA Channel Q Tail */ | |
62 | char dma_q_count; /* DMA Channel Q Count */ | |
63 | int active:1; /* we are using this stream for transfer now */ | |
64 | int period; /* current transfer period */ | |
65 | int periods; /* current count of periods registerd in the DMA engine */ | |
66 | spinlock_t dma_lock; /* for locking in DMA operations */ | |
2f4ff764 | 67 | struct snd_pcm_substream *stream; /* the pcm stream */ |
120db2cb TL |
68 | unsigned linked:1; /* dma channels linked */ |
69 | int offset; /* store start position of the last period in the alsa buffer */ | |
70 | int (*hw_start)(void); /* interface to start HW interface, e.g. McBSP */ | |
71 | int (*hw_stop)(void); /* interface to stop HW interface, e.g. McBSP */ | |
72 | }; | |
73 | ||
74 | /* | |
75 | * Alsa card structure for aic23 | |
76 | */ | |
77 | struct snd_card_omap_codec { | |
2f4ff764 TL |
78 | struct snd_card *card; |
79 | struct snd_pcm *pcm; | |
120db2cb TL |
80 | long samplerate; |
81 | struct audio_stream s[2]; /* playback & capture */ | |
82 | }; | |
83 | ||
84 | /* Codec specific information and function pointers. | |
85 | * Codec (omap-alsa-aic23.c and omap-alsa-tsc2101.c) | |
86 | * are responsible for defining the function pointers. | |
87 | */ | |
88 | struct omap_alsa_codec_config { | |
89 | char *name; | |
90 | struct omap_mcbsp_reg_cfg *mcbsp_regs_alsa; | |
2f4ff764 TL |
91 | struct snd_pcm_hw_constraint_list *hw_constraints_rates; |
92 | struct snd_pcm_hardware *snd_omap_alsa_playback; | |
93 | struct snd_pcm_hardware *snd_omap_alsa_capture; | |
120db2cb TL |
94 | void (*codec_configure_dev)(void); |
95 | void (*codec_set_samplerate)(long); | |
96 | void (*codec_clock_setup)(void); | |
97 | int (*codec_clock_on)(void); | |
98 | int (*codec_clock_off)(void); | |
99 | int (*get_default_samplerate)(void); | |
100 | }; | |
101 | ||
102 | /*********** Mixer function prototypes *************************/ | |
103 | int snd_omap_mixer(struct snd_card_omap_codec *); | |
104 | void snd_omap_init_mixer(void); | |
105 | ||
106 | #ifdef CONFIG_PM | |
107 | void snd_omap_suspend_mixer(void); | |
108 | void snd_omap_resume_mixer(void); | |
109 | #endif | |
110 | ||
111 | int snd_omap_alsa_post_probe(struct platform_device *pdev, struct omap_alsa_codec_config *config); | |
112 | int snd_omap_alsa_remove(struct platform_device *pdev); | |
113 | #ifdef CONFIG_PM | |
114 | int snd_omap_alsa_suspend(struct platform_device *pdev, pm_message_t state); | |
115 | int snd_omap_alsa_resume(struct platform_device *pdev); | |
116 | #else | |
117 | #define snd_omap_alsa_suspend NULL | |
118 | #define snd_omap_alsa_resume NULL | |
119 | #endif | |
120 | ||
121 | void callback_omap_alsa_sound_dma(void *); | |
122 | ||
123 | #endif |