| Kai Svahn | 8777297 | 2007-01-26 13:14:34 -0800 | [diff] [blame] | 1 | /* |
| 2 | * linux/include/asm-arm/arch-omap2/eac.h |
| 3 | * |
| 4 | * Defines for Enhanced Audio Controller |
| 5 | * |
| 6 | * Contact: Jarkko Nikula <jarkko.nikula@nokia.com> |
| 7 | * |
| 8 | * Copyright (C) 2006 Nokia Corporation |
| 9 | * Copyright (C) 2004 Texas Instruments, Inc. |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or |
| 12 | * modify it under the terms of the GNU General Public License |
| 13 | * version 2 as published by the Free Software Foundation. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, but |
| 16 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 18 | * General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
| 23 | * 02110-1301 USA |
| 24 | * |
| 25 | */ |
| 26 | |
| 27 | #ifndef __ASM_ARM_ARCH_OMAP2_EAC_H |
| 28 | #define __ASM_ARM_ARCH_OMAP2_EAC_H |
| 29 | |
| 30 | #include <asm/arch/io.h> |
| 31 | #include <asm/arch/hardware.h> |
| 32 | #include <asm/irq.h> |
| 33 | |
| 34 | #include <sound/driver.h> |
| 35 | #include <sound/core.h> |
| 36 | |
| 37 | /* master codec clock source */ |
| 38 | #define EAC_MCLK_EXT_MASK 0x100 |
| 39 | enum eac_mclk_src { |
| 40 | EAC_MCLK_INT_11290000, /* internal 96 MHz / 8.5 = 11.29 Mhz */ |
| 41 | EAC_MCLK_EXT_11289600 = EAC_MCLK_EXT_MASK, |
| 42 | EAC_MCLK_EXT_12288000, |
| 43 | EAC_MCLK_EXT_2x11289600, |
| 44 | EAC_MCLK_EXT_2x12288000, |
| 45 | }; |
| 46 | |
| 47 | /* codec port interface mode */ |
| 48 | enum eac_codec_mode { |
| 49 | EAC_CODEC_PCM, |
| 50 | EAC_CODEC_AC97, |
| 51 | EAC_CODEC_I2S_MASTER, /* codec port, I.e. EAC is the master */ |
| 52 | EAC_CODEC_I2S_SLAVE, |
| 53 | }; |
| 54 | |
| 55 | /* configuration structure for I2S mode */ |
| 56 | struct eac_i2s_conf { |
| 57 | /* if enabled, then first data slot (left channel) is signaled as |
| 58 | * positive level of frame sync EAC.AC_FS */ |
| 59 | unsigned polarity_changed_mode:1; |
| 60 | /* if enabled, then serial data starts one clock cycle after the |
| 61 | * of EAC.AC_FS for first audio slot */ |
| 62 | unsigned sync_delay_enable:1; |
| 63 | }; |
| 64 | |
| 65 | /* configuration structure for EAC codec port */ |
| 66 | struct eac_codec { |
| 67 | enum eac_mclk_src mclk_src; |
| 68 | |
| 69 | enum eac_codec_mode codec_mode; |
| 70 | union { |
| 71 | struct eac_i2s_conf i2s; |
| 72 | } codec_conf; |
| 73 | |
| 74 | int default_rate; /* audio sampling rate */ |
| 75 | |
| 76 | int (* set_power)(void *private_data, int dac, int adc); |
| 77 | int (* register_controls)(void *private_data, |
| 78 | struct snd_card *card); |
| 79 | const char *short_name; |
| 80 | |
| 81 | void *private_data; |
| 82 | }; |
| 83 | |
| 84 | /* structure for passing platform dependent data to the EAC driver */ |
| 85 | struct eac_platform_data { |
| 86 | int (* init)(struct device *eac_dev); |
| 87 | void (* cleanup)(struct device *eac_dev); |
| 88 | /* these callbacks are used to configure & control external MCLK |
| 89 | * source. NULL if not used */ |
| 90 | int (* enable_ext_clocks)(struct device *eac_dev); |
| 91 | void (* disable_ext_clocks)(struct device *eac_dev); |
| 92 | }; |
| 93 | |
| 94 | extern void omap_init_eac(struct eac_platform_data *pdata); |
| 95 | |
| 96 | extern int eac_register_codec(struct device *eac_dev, struct eac_codec *codec); |
| 97 | extern void eac_unregister_codec(struct device *eac_dev); |
| 98 | |
| 99 | extern int eac_set_mode(struct device *eac_dev, int play, int rec); |
| 100 | |
| 101 | #endif /* __ASM_ARM_ARCH_OMAP2_EAC_H */ |