projects / linux-2.6 / blame
| 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 |