--- /dev/null
+/* sound/soc/samsung/s3c-i2s-v2.h
+ *
+ * ALSA Soc Audio Layer - S3C_I2SV2 I2S driver
+ *
+ * Copyright (c) 2007 Simtec Electronics
+ * http://armlinux.simtec.co.uk/
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+*/
+
+/* This code is the core support for the I2S block found in a number of
+ * Samsung SoC devices which is unofficially named I2S-V2. Currently the
+ * S3C2412 and the S3C64XX series use this block to provide 1 or 2 I2S
+ * channels via configurable GPIO.
+ */
+
+#ifndef __SND_SOC_S3C24XX_S3C_I2SV2_I2S_H
+#define __SND_SOC_S3C24XX_S3C_I2SV2_I2S_H __FILE__
+
+#define S3C_I2SV2_DIV_BCLK (1)
+#define S3C_I2SV2_DIV_RCLK (2)
+#define S3C_I2SV2_DIV_PRESCALER (3)
+
+#define S3C_I2SV2_CLKSRC_PCLK 0
+#define S3C_I2SV2_CLKSRC_AUDIOBUS 1
+#define S3C_I2SV2_CLKSRC_CDCLK 2
+
+/* Set this flag for I2S controllers that have the bit IISMOD[12]
+ * bridge/break RCLK signal and external Xi2sCDCLK pin.
+ */
+#define S3C_FEATURE_CDCLKCON (1 << 0)
+
+/**
+ * struct s3c_i2sv2_info - S3C I2S-V2 information
+ * @dev: The parent device passed to use from the probe.
+ * @regs: The pointer to the device registe block.
+ * @feature: Set of bit-flags indicating features of the controller.
+ * @master: True if the I2S core is the I2S bit clock master.
+ * @dma_playback: DMA information for playback channel.
+ * @dma_capture: DMA information for capture channel.
+ * @suspend_iismod: PM save for the IISMOD register.
+ * @suspend_iiscon: PM save for the IISCON register.
+ * @suspend_iispsr: PM save for the IISPSR register.
+ *
+ * This is the private codec state for the hardware associated with an
+ * I2S channel such as the register mappings and clock sources.
+ */
+struct s3c_i2sv2_info {
+ struct device *dev;
+ void __iomem *regs;
+
+ u32 feature;
+
+ struct clk *iis_pclk;
+ struct clk *iis_cclk;
+
+ unsigned char master;
+
+ struct s3c_dma_params *dma_playback;
+ struct s3c_dma_params *dma_capture;
+
+ u32 suspend_iismod;
+ u32 suspend_iiscon;
+ u32 suspend_iispsr;
+
+ unsigned long base;
+};
+
+extern struct clk *s3c_i2sv2_get_clock(struct snd_soc_dai *cpu_dai);
+
+struct s3c_i2sv2_rate_calc {
+ unsigned int clk_div; /* for prescaler */
+ unsigned int fs_div; /* for root frame clock */
+};
+
+extern int s3c_i2sv2_iis_calc_rate(struct s3c_i2sv2_rate_calc *info,
+ unsigned int *fstab,
+ unsigned int rate, struct clk *clk);
+
+/**
+ * s3c_i2sv2_probe - probe for i2s device helper
+ * @dai: The ASoC DAI structure supplied to the original probe.
+ * @i2s: Our local i2s structure to fill in.
+ * @base: The base address for the registers.
+ */
+extern int s3c_i2sv2_probe(struct snd_soc_dai *dai,
+ struct s3c_i2sv2_info *i2s,
+ unsigned long base);
+
+/**
+ * s3c_i2sv2_register_component - register component and dai with soc core
+ * @dev: DAI device
+ * @id: DAI ID
+ * @drv: The driver structure to register
+ *
+ * Fill in any missing fields and then register the given dai with the
+ * soc core.
+ */
+extern int s3c_i2sv2_register_component(struct device *dev, int id,
+ struct snd_soc_component_driver *cmp_drv,
+ struct snd_soc_dai_driver *dai_drv);
+
+#endif /* __SND_SOC_S3C24XX_S3C_I2SV2_I2S_H */
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