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1 | /* sound/soc/s3c24xx/s3c2412-i2s.c |
2 | * | |
3 | * ALSA Soc Audio Layer - S3C2412 I2S driver | |
4 | * | |
5 | * Copyright (c) 2007 Simtec Electronics | |
6 | * http://armlinux.simtec.co.uk/ | |
7 | * Ben Dooks <ben@simtec.co.uk> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU General Public License as published by the | |
11 | * Free Software Foundation; either version 2 of the License, or (at your | |
12 | * option) any later version. | |
13 | */ | |
14 | ||
15 | #ifndef __SND_SOC_S3C24XX_S3C2412_I2S_H | |
16 | #define __SND_SOC_S3C24XX_S3C2412_I2S_H __FILE__ | |
17 | ||
18 | #define S3C2412_DIV_BCLK (1) | |
19 | #define S3C2412_DIV_RCLK (2) | |
20 | #define S3C2412_DIV_PRESCALER (3) | |
21 | ||
22 | #define S3C2412_CLKSRC_PCLK (0) | |
23 | #define S3C2412_CLKSRC_I2SCLK (1) | |
24 | ||
25 | extern struct clk *s3c2412_get_iisclk(void); | |
26 | ||
1992a6fb | 27 | extern struct snd_soc_dai s3c2412_i2s_dai; |
49646dfa BD |
28 | |
29 | struct s3c2412_rate_calc { | |
30 | unsigned int clk_div; /* for prescaler */ | |
31 | unsigned int fs_div; /* for root frame clock */ | |
32 | }; | |
33 | ||
34 | extern int s3c2412_iis_calc_rate(struct s3c2412_rate_calc *info, | |
35 | unsigned int *fstab, | |
36 | unsigned int rate, struct clk *clk); | |
37 | ||
38 | #endif /* __SND_SOC_S3C24XX_S3C2412_I2S_H */ |