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8777297b | 1 | /* |
a09e64fb | 2 | * arch/arm/plat-omap/include/mach2/eac.h |
8777297b KS |
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 | ||
a09e64fb RK |
30 | #include <mach/io.h> |
31 | #include <mach/hardware.h> | |
8777297b KS |
32 | #include <asm/irq.h> |
33 | ||
8777297b KS |
34 | #include <sound/core.h> |
35 | ||
36 | /* master codec clock source */ | |
37 | #define EAC_MCLK_EXT_MASK 0x100 | |
38 | enum eac_mclk_src { | |
39 | EAC_MCLK_INT_11290000, /* internal 96 MHz / 8.5 = 11.29 Mhz */ | |
40 | EAC_MCLK_EXT_11289600 = EAC_MCLK_EXT_MASK, | |
41 | EAC_MCLK_EXT_12288000, | |
42 | EAC_MCLK_EXT_2x11289600, | |
43 | EAC_MCLK_EXT_2x12288000, | |
44 | }; | |
45 | ||
46 | /* codec port interface mode */ | |
47 | enum eac_codec_mode { | |
48 | EAC_CODEC_PCM, | |
49 | EAC_CODEC_AC97, | |
50 | EAC_CODEC_I2S_MASTER, /* codec port, I.e. EAC is the master */ | |
51 | EAC_CODEC_I2S_SLAVE, | |
52 | }; | |
53 | ||
54 | /* configuration structure for I2S mode */ | |
55 | struct eac_i2s_conf { | |
56 | /* if enabled, then first data slot (left channel) is signaled as | |
57 | * positive level of frame sync EAC.AC_FS */ | |
58 | unsigned polarity_changed_mode:1; | |
59 | /* if enabled, then serial data starts one clock cycle after the | |
60 | * of EAC.AC_FS for first audio slot */ | |
61 | unsigned sync_delay_enable:1; | |
62 | }; | |
63 | ||
64 | /* configuration structure for EAC codec port */ | |
65 | struct eac_codec { | |
66 | enum eac_mclk_src mclk_src; | |
67 | ||
68 | enum eac_codec_mode codec_mode; | |
69 | union { | |
70 | struct eac_i2s_conf i2s; | |
71 | } codec_conf; | |
72 | ||
73 | int default_rate; /* audio sampling rate */ | |
74 | ||
75 | int (* set_power)(void *private_data, int dac, int adc); | |
76 | int (* register_controls)(void *private_data, | |
77 | struct snd_card *card); | |
78 | const char *short_name; | |
79 | ||
80 | void *private_data; | |
81 | }; | |
82 | ||
83 | /* structure for passing platform dependent data to the EAC driver */ | |
84 | struct eac_platform_data { | |
85 | int (* init)(struct device *eac_dev); | |
86 | void (* cleanup)(struct device *eac_dev); | |
87 | /* these callbacks are used to configure & control external MCLK | |
88 | * source. NULL if not used */ | |
89 | int (* enable_ext_clocks)(struct device *eac_dev); | |
90 | void (* disable_ext_clocks)(struct device *eac_dev); | |
91 | }; | |
92 | ||
93 | extern void omap_init_eac(struct eac_platform_data *pdata); | |
94 | ||
95 | extern int eac_register_codec(struct device *eac_dev, struct eac_codec *codec); | |
96 | extern void eac_unregister_codec(struct device *eac_dev); | |
97 | ||
98 | extern int eac_set_mode(struct device *eac_dev, int play, int rec); | |
99 | ||
100 | #endif /* __ASM_ARM_ARCH_OMAP2_EAC_H */ |