Merge branch 'linus' into core/printk

1 files changed, 638 insertions, 0 deletions

diff --git a/sound/soc/s3c24xx/s3c-i2s-v2.c b/sound/soc/s3c24xx/s3c-i2s-v2.c
new file mode 100644
index 00000000000..295a4c91026
--- /dev/null
+++ b/sound/soc/s3c24xx/s3c-i2s-v2.c
@@ -0,0 +1,638 @@
+/* sound/soc/s3c24xx/s3c-i2c-v2.c
+ *
+ * ALSA Soc Audio Layer - I2S core for newer Samsung SoCs.
+ *
+ * Copyright (c) 2006 Wolfson Microelectronics PLC.
+ *	Graeme Gregory graeme.gregory@wolfsonmicro.com
+ *	linux@wolfsonmicro.com
+ *
+ * Copyright (c) 2008, 2007, 2004-2005 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.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+#include <linux/kernel.h>
+#include <linux/io.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/initval.h>
+#include <sound/soc.h>
+
+#include <plat/regs-s3c2412-iis.h>
+
+#include <plat/audio.h>
+#include <mach/dma.h>
+
+#include "s3c-i2s-v2.h"
+
+#define S3C2412_I2S_DEBUG_CON 0
+
+static inline struct s3c_i2sv2_info *to_info(struct snd_soc_dai *cpu_dai)
+{
+	return cpu_dai->private_data;
+}
+
+#define bit_set(v, b) (((v) & (b)) ? 1 : 0)
+
+#if S3C2412_I2S_DEBUG_CON
+static void dbg_showcon(const char *fn, u32 con)
+{
+	printk(KERN_DEBUG "%s: LRI=%d, TXFEMPT=%d, RXFEMPT=%d, TXFFULL=%d, RXFFULL=%d\n", fn,
+	       bit_set(con, S3C2412_IISCON_LRINDEX),
+	       bit_set(con, S3C2412_IISCON_TXFIFO_EMPTY),
+	       bit_set(con, S3C2412_IISCON_RXFIFO_EMPTY),
+	       bit_set(con, S3C2412_IISCON_TXFIFO_FULL),
+	       bit_set(con, S3C2412_IISCON_RXFIFO_FULL));
+
+	printk(KERN_DEBUG "%s: PAUSE: TXDMA=%d, RXDMA=%d, TXCH=%d, RXCH=%d\n",
+	       fn,
+	       bit_set(con, S3C2412_IISCON_TXDMA_PAUSE),
+	       bit_set(con, S3C2412_IISCON_RXDMA_PAUSE),
+	       bit_set(con, S3C2412_IISCON_TXCH_PAUSE),
+	       bit_set(con, S3C2412_IISCON_RXCH_PAUSE));
+	printk(KERN_DEBUG "%s: ACTIVE: TXDMA=%d, RXDMA=%d, IIS=%d\n", fn,
+	       bit_set(con, S3C2412_IISCON_TXDMA_ACTIVE),
+	       bit_set(con, S3C2412_IISCON_RXDMA_ACTIVE),
+	       bit_set(con, S3C2412_IISCON_IIS_ACTIVE));
+}
+#else
+static inline void dbg_showcon(const char *fn, u32 con)
+{
+}
+#endif
+
+
+/* Turn on or off the transmission path. */
+void s3c2412_snd_txctrl(struct s3c_i2sv2_info *i2s, int on)
+{
+	void __iomem *regs = i2s->regs;
+	u32 fic, con, mod;
+
+	pr_debug("%s(%d)\n", __func__, on);
+
+	fic = readl(regs + S3C2412_IISFIC);
+	con = readl(regs + S3C2412_IISCON);
+	mod = readl(regs + S3C2412_IISMOD);
+
+	pr_debug("%s: IIS: CON=%x MOD=%x FIC=%x\n", __func__, con, mod, fic);
+
+	if (on) {
+		con |= S3C2412_IISCON_TXDMA_ACTIVE | S3C2412_IISCON_IIS_ACTIVE;
+		con &= ~S3C2412_IISCON_TXDMA_PAUSE;
+		con &= ~S3C2412_IISCON_TXCH_PAUSE;
+
+		switch (mod & S3C2412_IISMOD_MODE_MASK) {
+		case S3C2412_IISMOD_MODE_TXONLY:
+		case S3C2412_IISMOD_MODE_TXRX:
+			/* do nothing, we are in the right mode */
+			break;
+
+		case S3C2412_IISMOD_MODE_RXONLY:
+			mod &= ~S3C2412_IISMOD_MODE_MASK;
+			mod |= S3C2412_IISMOD_MODE_TXRX;
+			break;
+
+		default:
+			dev_err(i2s->dev, "TXEN: Invalid MODE in IISMOD\n");
+		}
+
+		writel(con, regs + S3C2412_IISCON);
+		writel(mod, regs + S3C2412_IISMOD);
+	} else {
+		/* Note, we do not have any indication that the FIFO problems
+		 * tha the S3C2410/2440 had apply here, so we should be able
+		 * to disable the DMA and TX without resetting the FIFOS.
+		 */
+
+		con |=  S3C2412_IISCON_TXDMA_PAUSE;
+		con |=  S3C2412_IISCON_TXCH_PAUSE;
+		con &= ~S3C2412_IISCON_TXDMA_ACTIVE;
+
+		switch (mod & S3C2412_IISMOD_MODE_MASK) {
+		case S3C2412_IISMOD_MODE_TXRX:
+			mod &= ~S3C2412_IISMOD_MODE_MASK;
+			mod |= S3C2412_IISMOD_MODE_RXONLY;
+			break;
+
+		case S3C2412_IISMOD_MODE_TXONLY:
+			mod &= ~S3C2412_IISMOD_MODE_MASK;
+			con &= ~S3C2412_IISCON_IIS_ACTIVE;
+			break;
+
+		default:
+			dev_err(i2s->dev, "TXDIS: Invalid MODE in IISMOD\n");
+		}
+
+		writel(mod, regs + S3C2412_IISMOD);
+		writel(con, regs + S3C2412_IISCON);
+	}
+
+	fic = readl(regs + S3C2412_IISFIC);
+	dbg_showcon(__func__, con);
+	pr_debug("%s: IIS: CON=%x MOD=%x FIC=%x\n", __func__, con, mod, fic);
+}
+EXPORT_SYMBOL_GPL(s3c2412_snd_txctrl);
+
+void s3c2412_snd_rxctrl(struct s3c_i2sv2_info *i2s, int on)
+{
+	void __iomem *regs = i2s->regs;
+	u32 fic, con, mod;
+
+	pr_debug("%s(%d)\n", __func__, on);
+
+	fic = readl(regs + S3C2412_IISFIC);
+	con = readl(regs + S3C2412_IISCON);
+	mod = readl(regs + S3C2412_IISMOD);
+
+	pr_debug("%s: IIS: CON=%x MOD=%x FIC=%x\n", __func__, con, mod, fic);
+
+	if (on) {
+		con |= S3C2412_IISCON_RXDMA_ACTIVE | S3C2412_IISCON_IIS_ACTIVE;
+		con &= ~S3C2412_IISCON_RXDMA_PAUSE;
+		con &= ~S3C2412_IISCON_RXCH_PAUSE;
+
+		switch (mod & S3C2412_IISMOD_MODE_MASK) {
+		case S3C2412_IISMOD_MODE_TXRX:
+		case S3C2412_IISMOD_MODE_RXONLY:
+			/* do nothing, we are in the right mode */
+			break;
+
+		case S3C2412_IISMOD_MODE_TXONLY:
+			mod &= ~S3C2412_IISMOD_MODE_MASK;
+			mod |= S3C2412_IISMOD_MODE_TXRX;
+			break;
+
+		default:
+			dev_err(i2s->dev, "RXEN: Invalid MODE in IISMOD\n");
+		}
+
+		writel(mod, regs + S3C2412_IISMOD);
+		writel(con, regs + S3C2412_IISCON);
+	} else {
+		/* See txctrl notes on FIFOs. */
+
+		con &= ~S3C2412_IISCON_RXDMA_ACTIVE;
+		con |=  S3C2412_IISCON_RXDMA_PAUSE;
+		con |=  S3C2412_IISCON_RXCH_PAUSE;
+
+		switch (mod & S3C2412_IISMOD_MODE_MASK) {
+		case S3C2412_IISMOD_MODE_RXONLY:
+			con &= ~S3C2412_IISCON_IIS_ACTIVE;
+			mod &= ~S3C2412_IISMOD_MODE_MASK;
+			break;
+
+		case S3C2412_IISMOD_MODE_TXRX:
+			mod &= ~S3C2412_IISMOD_MODE_MASK;
+			mod |= S3C2412_IISMOD_MODE_TXONLY;
+			break;
+
+		default:
+			dev_err(i2s->dev, "RXEN: Invalid MODE in IISMOD\n");
+		}
+
+		writel(con, regs + S3C2412_IISCON);
+		writel(mod, regs + S3C2412_IISMOD);
+	}
+
+	fic = readl(regs + S3C2412_IISFIC);
+	pr_debug("%s: IIS: CON=%x MOD=%x FIC=%x\n", __func__, con, mod, fic);
+}
+EXPORT_SYMBOL_GPL(s3c2412_snd_rxctrl);
+
+/*
+ * Wait for the LR signal to allow synchronisation to the L/R clock
+ * from the codec. May only be needed for slave mode.
+ */
+static int s3c2412_snd_lrsync(struct s3c_i2sv2_info *i2s)
+{
+	u32 iiscon;
+	unsigned long timeout = jiffies + msecs_to_jiffies(5);
+
+	pr_debug("Entered %s\n", __func__);
+
+	while (1) {
+		iiscon = readl(i2s->regs + S3C2412_IISCON);
+		if (iiscon & S3C2412_IISCON_LRINDEX)
+			break;
+
+		if (timeout < jiffies) {
+			printk(KERN_ERR "%s: timeout\n", __func__);
+			return -ETIMEDOUT;
+		}
+	}
+
+	return 0;
+}
+
+/*
+ * Set S3C2412 I2S DAI format
+ */
+static int s3c2412_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
+			       unsigned int fmt)
+{
+	struct s3c_i2sv2_info *i2s = to_info(cpu_dai);
+	u32 iismod;
+
+	pr_debug("Entered %s\n", __func__);
+
+	iismod = readl(i2s->regs + S3C2412_IISMOD);
+	pr_debug("hw_params r: IISMOD: %x \n", iismod);
+
+#if defined(CONFIG_CPU_S3C2412) || defined(CONFIG_CPU_S3C2413)
+#define IISMOD_MASTER_MASK S3C2412_IISMOD_MASTER_MASK
+#define IISMOD_SLAVE S3C2412_IISMOD_SLAVE
+#define IISMOD_MASTER S3C2412_IISMOD_MASTER_INTERNAL
+#endif
+
+#if defined(CONFIG_PLAT_S3C64XX)
+/* From Rev1.1 datasheet, we have two master and two slave modes:
+ * IMS[11:10]:
+ *	00 = master mode, fed from PCLK
+ *	01 = master mode, fed from CLKAUDIO
+ *	10 = slave mode, using PCLK
+ *	11 = slave mode, using I2SCLK
+ */
+#define IISMOD_MASTER_MASK (1 << 11)
+#define IISMOD_SLAVE (1 << 11)
+#define IISMOD_MASTER (0x0)
+#endif
+
+	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+	case SND_SOC_DAIFMT_CBM_CFM:
+		i2s->master = 0;
+		iismod &= ~IISMOD_MASTER_MASK;
+		iismod |= IISMOD_SLAVE;
+		break;
+	case SND_SOC_DAIFMT_CBS_CFS:
+		i2s->master = 1;
+		iismod &= ~IISMOD_MASTER_MASK;
+		iismod |= IISMOD_MASTER;
+		break;
+	default:
+		pr_debug("unknwon master/slave format\n");
+		return -EINVAL;
+	}
+
+	iismod &= ~S3C2412_IISMOD_SDF_MASK;
+
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_RIGHT_J:
+		iismod |= S3C2412_IISMOD_SDF_MSB;
+		break;
+	case SND_SOC_DAIFMT_LEFT_J:
+		iismod |= S3C2412_IISMOD_SDF_LSB;
+		break;
+	case SND_SOC_DAIFMT_I2S:
+		iismod |= S3C2412_IISMOD_SDF_IIS;
+		break;
+	default:
+		pr_debug("Unknown data format\n");
+		return -EINVAL;
+	}
+
+	writel(iismod, i2s->regs + S3C2412_IISMOD);
+	pr_debug("hw_params w: IISMOD: %x \n", iismod);
+	return 0;
+}
+
+static int s3c2412_i2s_hw_params(struct snd_pcm_substream *substream,
+				 struct snd_pcm_hw_params *params,
+				 struct snd_soc_dai *socdai)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai_link *dai = rtd->dai;
+	struct s3c_i2sv2_info *i2s = to_info(dai->cpu_dai);
+	u32 iismod;
+
+	pr_debug("Entered %s\n", __func__);
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		dai->cpu_dai->dma_data = i2s->dma_playback;
+	else
+		dai->cpu_dai->dma_data = i2s->dma_capture;
+
+	/* Working copies of register */
+	iismod = readl(i2s->regs + S3C2412_IISMOD);
+	pr_debug("%s: r: IISMOD: %x\n", __func__, iismod);
+
+	switch (params_format(params)) {
+	case SNDRV_PCM_FORMAT_S8:
+		iismod |= S3C2412_IISMOD_8BIT;
+		break;
+	case SNDRV_PCM_FORMAT_S16_LE:
+		iismod &= ~S3C2412_IISMOD_8BIT;
+		break;
+	}
+
+	writel(iismod, i2s->regs + S3C2412_IISMOD);
+	pr_debug("%s: w: IISMOD: %x\n", __func__, iismod);
+	return 0;
+}
+
+static int s3c2412_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
+			       struct snd_soc_dai *dai)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct s3c_i2sv2_info *i2s = to_info(rtd->dai->cpu_dai);
+	int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
+	unsigned long irqs;
+	int ret = 0;
+
+	pr_debug("Entered %s\n", __func__);
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+		/* On start, ensure that the FIFOs are cleared and reset. */
+
+		writel(capture ? S3C2412_IISFIC_RXFLUSH : S3C2412_IISFIC_TXFLUSH,
+		       i2s->regs + S3C2412_IISFIC);
+
+		/* clear again, just in case */
+		writel(0x0, i2s->regs + S3C2412_IISFIC);
+
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		if (!i2s->master) {
+			ret = s3c2412_snd_lrsync(i2s);
+			if (ret)
+				goto exit_err;
+		}
+
+		local_irq_save(irqs);
+
+		if (capture)
+			s3c2412_snd_rxctrl(i2s, 1);
+		else
+			s3c2412_snd_txctrl(i2s, 1);
+
+		local_irq_restore(irqs);
+		break;
+
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		local_irq_save(irqs);
+
+		if (capture)
+			s3c2412_snd_rxctrl(i2s, 0);
+		else
+			s3c2412_snd_txctrl(i2s, 0);
+
+		local_irq_restore(irqs);
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+exit_err:
+	return ret;
+}
+
+/*
+ * Set S3C2412 Clock dividers
+ */
+static int s3c2412_i2s_set_clkdiv(struct snd_soc_dai *cpu_dai,
+				  int div_id, int div)
+{
+	struct s3c_i2sv2_info *i2s = to_info(cpu_dai);
+	u32 reg;
+
+	pr_debug("%s(%p, %d, %d)\n", __func__, cpu_dai, div_id, div);
+
+	switch (div_id) {
+	case S3C_I2SV2_DIV_BCLK:
+		reg = readl(i2s->regs + S3C2412_IISMOD);
+		reg &= ~S3C2412_IISMOD_BCLK_MASK;
+		writel(reg | div, i2s->regs + S3C2412_IISMOD);
+
+		pr_debug("%s: MOD=%08x\n", __func__, readl(i2s->regs + S3C2412_IISMOD));
+		break;
+
+	case S3C_I2SV2_DIV_RCLK:
+		if (div > 3) {
+			/* convert value to bit field */
+
+			switch (div) {
+			case 256:
+				div = S3C2412_IISMOD_RCLK_256FS;
+				break;
+
+			case 384:
+				div = S3C2412_IISMOD_RCLK_384FS;
+				break;
+
+			case 512:
+				div = S3C2412_IISMOD_RCLK_512FS;
+				break;
+
+			case 768:
+				div = S3C2412_IISMOD_RCLK_768FS;
+				break;
+
+			default:
+				return -EINVAL;
+			}
+		}
+
+		reg = readl(i2s->regs + S3C2412_IISMOD);
+		reg &= ~S3C2412_IISMOD_RCLK_MASK;
+		writel(reg | div, i2s->regs + S3C2412_IISMOD);
+		pr_debug("%s: MOD=%08x\n", __func__, readl(i2s->regs + S3C2412_IISMOD));
+		break;
+
+	case S3C_I2SV2_DIV_PRESCALER:
+		if (div >= 0) {
+			writel((div << 8) | S3C2412_IISPSR_PSREN,
+			       i2s->regs + S3C2412_IISPSR);
+		} else {
+			writel(0x0, i2s->regs + S3C2412_IISPSR);
+		}
+		pr_debug("%s: PSR=%08x\n", __func__, readl(i2s->regs + S3C2412_IISPSR));
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/* default table of all avaialable root fs divisors */
+static unsigned int iis_fs_tab[] = { 256, 512, 384, 768 };
+
+int s3c2412_iis_calc_rate(struct s3c_i2sv2_rate_calc *info,
+			  unsigned int *fstab,
+			  unsigned int rate, struct clk *clk)
+{
+	unsigned long clkrate = clk_get_rate(clk);
+	unsigned int div;
+	unsigned int fsclk;
+	unsigned int actual;
+	unsigned int fs;
+	unsigned int fsdiv;
+	signed int deviation = 0;
+	unsigned int best_fs = 0;
+	unsigned int best_div = 0;
+	unsigned int best_rate = 0;
+	unsigned int best_deviation = INT_MAX;
+
+	if (fstab == NULL)
+		fstab = iis_fs_tab;
+
+	for (fs = 0; fs < ARRAY_SIZE(iis_fs_tab); fs++) {
+		fsdiv = iis_fs_tab[fs];
+
+		fsclk = clkrate / fsdiv;
+		div = fsclk / rate;
+
+		if ((fsclk % rate) > (rate / 2))
+			div++;
+
+		if (div <= 1)
+			continue;
+
+		actual = clkrate / (fsdiv * div);
+		deviation = actual - rate;
+
+		printk(KERN_DEBUG "%dfs: div %d => result %d, deviation %d\n",
+		       fsdiv, div, actual, deviation);
+
+		deviation = abs(deviation);
+
+		if (deviation < best_deviation) {
+			best_fs = fsdiv;
+			best_div = div;
+			best_rate = actual;
+			best_deviation = deviation;
+		}
+
+		if (deviation == 0)
+			break;
+	}
+
+	printk(KERN_DEBUG "best: fs=%d, div=%d, rate=%d\n",
+	       best_fs, best_div, best_rate);
+
+	info->fs_div = best_fs;
+	info->clk_div = best_div;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(s3c2412_iis_calc_rate);
+
+int s3c_i2sv2_probe(struct platform_device *pdev,
+		    struct snd_soc_dai *dai,
+		    struct s3c_i2sv2_info *i2s,
+		    unsigned long base)
+{
+	struct device *dev = &pdev->dev;
+
+	i2s->dev = dev;
+
+	/* record our i2s structure for later use in the callbacks */
+	dai->private_data = i2s;
+
+	i2s->regs = ioremap(base, 0x100);
+	if (i2s->regs == NULL) {
+		dev_err(dev, "cannot ioremap registers\n");
+		return -ENXIO;
+	}
+
+	i2s->iis_pclk = clk_get(dev, "iis");
+	if (i2s->iis_pclk == NULL) {
+		dev_err(dev, "failed to get iis_clock\n");
+		iounmap(i2s->regs);
+		return -ENOENT;
+	}
+
+	clk_enable(i2s->iis_pclk);
+
+	s3c2412_snd_txctrl(i2s, 0);
+	s3c2412_snd_rxctrl(i2s, 0);
+
+	return 0;
+}
+
+EXPORT_SYMBOL_GPL(s3c_i2sv2_probe);
+
+#ifdef CONFIG_PM
+static int s3c2412_i2s_suspend(struct snd_soc_dai *dai)
+{
+	struct s3c_i2sv2_info *i2s = to_info(dai);
+	u32 iismod;
+
+	if (dai->active) {
+		i2s->suspend_iismod = readl(i2s->regs + S3C2412_IISMOD);
+		i2s->suspend_iiscon = readl(i2s->regs + S3C2412_IISCON);
+		i2s->suspend_iispsr = readl(i2s->regs + S3C2412_IISPSR);
+
+		/* some basic suspend checks */
+
+		iismod = readl(i2s->regs + S3C2412_IISMOD);
+
+		if (iismod & S3C2412_IISCON_RXDMA_ACTIVE)
+			pr_warning("%s: RXDMA active?\n", __func__);
+
+		if (iismod & S3C2412_IISCON_TXDMA_ACTIVE)
+			pr_warning("%s: TXDMA active?\n", __func__);
+
+		if (iismod & S3C2412_IISCON_IIS_ACTIVE)
+			pr_warning("%s: IIS active\n", __func__);
+	}
+
+	return 0;
+}
+
+static int s3c2412_i2s_resume(struct snd_soc_dai *dai)
+{
+	struct s3c_i2sv2_info *i2s = to_info(dai);
+
+	pr_info("dai_active %d, IISMOD %08x, IISCON %08x\n",
+		dai->active, i2s->suspend_iismod, i2s->suspend_iiscon);
+
+	if (dai->active) {
+		writel(i2s->suspend_iiscon, i2s->regs + S3C2412_IISCON);
+		writel(i2s->suspend_iismod, i2s->regs + S3C2412_IISMOD);
+		writel(i2s->suspend_iispsr, i2s->regs + S3C2412_IISPSR);
+
+		writel(S3C2412_IISFIC_RXFLUSH | S3C2412_IISFIC_TXFLUSH,
+		       i2s->regs + S3C2412_IISFIC);
+
+		ndelay(250);
+		writel(0x0, i2s->regs + S3C2412_IISFIC);
+	}
+
+	return 0;
+}
+#else
+#define s3c2412_i2s_suspend NULL
+#define s3c2412_i2s_resume  NULL
+#endif
+
+int s3c_i2sv2_register_dai(struct snd_soc_dai *dai)
+{
+	dai->ops.trigger = s3c2412_i2s_trigger;
+	dai->ops.hw_params = s3c2412_i2s_hw_params;
+	dai->ops.set_fmt = s3c2412_i2s_set_fmt;
+	dai->ops.set_clkdiv = s3c2412_i2s_set_clkdiv;
+
+	dai->suspend = s3c2412_i2s_suspend;
+	dai->resume = s3c2412_i2s_resume;
+
+	return snd_soc_register_dai(dai);
+}
+
+EXPORT_SYMBOL_GPL(s3c_i2sv2_register_dai);