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authorJassi Brar <jassi.brar@samsung.com>2010-11-22 15:37:25 +0900
committerMark Brown <broonie@opensource.wolfsonmicro.com>2010-11-23 14:13:04 +0000
commit5033f43c66754296dfb0ac5c895208e4a7f93aac (patch)
tree343b6a07674afb35e026191c97bc6bc2f329f5bc /sound/soc/s3c24xx/s3c-i2s-v2.c
parenta964f34d8b516633d471191156963bae0d1bf730 (diff)
ASoC: Samsung: Rename from s3c24xx to samsung
Finally, move the 's3c24xx' directory to 'samsung' Signed-off-by: Jassi Brar <jassi.brar@samsung.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/s3c24xx/s3c-i2s-v2.c')
-rw-r--r--sound/soc/s3c24xx/s3c-i2s-v2.c757
1 files changed, 0 insertions, 757 deletions
diff --git a/sound/soc/s3c24xx/s3c-i2s-v2.c b/sound/soc/s3c24xx/s3c-i2s-v2.c
deleted file mode 100644
index c4714319216c..000000000000
--- a/sound/soc/s3c24xx/s3c-i2s-v2.c
+++ /dev/null
@@ -1,757 +0,0 @@
-/* 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/delay.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/soc.h>
-
-#include <mach/dma.h>
-
-#include "regs-i2s-v2.h"
-#include "s3c-i2s-v2.h"
-#include "dma.h"
-
-#undef S3C_IIS_V2_SUPPORTED
-
-#if defined(CONFIG_CPU_S3C2412) || defined(CONFIG_CPU_S3C2413) \
- || defined(CONFIG_CPU_S5PV210)
-#define S3C_IIS_V2_SUPPORTED
-#endif
-
-#ifdef CONFIG_PLAT_S3C64XX
-#define S3C_IIS_V2_SUPPORTED
-#endif
-
-#ifndef S3C_IIS_V2_SUPPORTED
-#error Unsupported CPU model
-#endif
-
-#define S3C2412_I2S_DEBUG_CON 0
-
-static inline struct s3c_i2sv2_info *to_info(struct snd_soc_dai *cpu_dai)
-{
- return snd_soc_dai_get_drvdata(cpu_dai);
-}
-
-#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. */
-static 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 %x in IISMOD\n",
- mod & S3C2412_IISMOD_MODE_MASK);
- break;
- }
-
- 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 %x in IISMOD\n",
- mod & S3C2412_IISMOD_MODE_MASK);
- break;
- }
-
- 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);
-}
-
-static 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 %x in IISMOD\n",
- mod & S3C2412_IISMOD_MODE_MASK);
- }
-
- 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, "RXDIS: Invalid MODE %x in IISMOD\n",
- mod & S3C2412_IISMOD_MODE_MASK);
- }
-
- 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);
-}
-
-#define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t)
-
-/*
- * 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 loops = msecs_to_loops(5);
-
- pr_debug("Entered %s\n", __func__);
-
- while (--loops) {
- iiscon = readl(i2s->regs + S3C2412_IISCON);
- if (iiscon & S3C2412_IISCON_LRINDEX)
- break;
-
- cpu_relax();
- }
-
- if (!loops) {
- 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);
-
- switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
- case SND_SOC_DAIFMT_CBM_CFM:
- i2s->master = 0;
- iismod |= S3C2412_IISMOD_SLAVE;
- break;
- case SND_SOC_DAIFMT_CBS_CFS:
- i2s->master = 1;
- iismod &= ~S3C2412_IISMOD_SLAVE;
- break;
- default:
- pr_err("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_LR_RLOW;
- iismod |= S3C2412_IISMOD_SDF_MSB;
- break;
- case SND_SOC_DAIFMT_LEFT_J:
- iismod |= S3C2412_IISMOD_LR_RLOW;
- iismod |= S3C2412_IISMOD_SDF_LSB;
- break;
- case SND_SOC_DAIFMT_I2S:
- iismod &= ~S3C2412_IISMOD_LR_RLOW;
- iismod |= S3C2412_IISMOD_SDF_IIS;
- break;
- default:
- pr_err("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 s3c_i2sv2_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params,
- struct snd_soc_dai *dai)
-{
- struct s3c_i2sv2_info *i2s = to_info(dai);
- struct s3c_dma_params *dma_data;
- u32 iismod;
-
- pr_debug("Entered %s\n", __func__);
-
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- dma_data = i2s->dma_playback;
- else
- dma_data = i2s->dma_capture;
-
- snd_soc_dai_set_dma_data(dai, substream, dma_data);
-
- /* Working copies of register */
- iismod = readl(i2s->regs + S3C2412_IISMOD);
- pr_debug("%s: r: IISMOD: %x\n", __func__, iismod);
-
- iismod &= ~S3C64XX_IISMOD_BLC_MASK;
- /* Sample size */
- switch (params_format(params)) {
- case SNDRV_PCM_FORMAT_S8:
- iismod |= S3C64XX_IISMOD_BLC_8BIT;
- break;
- case SNDRV_PCM_FORMAT_S16_LE:
- break;
- case SNDRV_PCM_FORMAT_S24_LE:
- iismod |= S3C64XX_IISMOD_BLC_24BIT;
- break;
- }
-
- writel(iismod, i2s->regs + S3C2412_IISMOD);
- pr_debug("%s: w: IISMOD: %x\n", __func__, iismod);
-
- return 0;
-}
-
-static int s3c_i2sv2_set_sysclk(struct snd_soc_dai *cpu_dai,
- int clk_id, unsigned int freq, int dir)
-{
- struct s3c_i2sv2_info *i2s = to_info(cpu_dai);
- u32 iismod = readl(i2s->regs + S3C2412_IISMOD);
-
- pr_debug("Entered %s\n", __func__);
- pr_debug("%s r: IISMOD: %x\n", __func__, iismod);
-
- switch (clk_id) {
- case S3C_I2SV2_CLKSRC_PCLK:
- iismod &= ~S3C2412_IISMOD_IMS_SYSMUX;
- break;
-
- case S3C_I2SV2_CLKSRC_AUDIOBUS:
- iismod |= S3C2412_IISMOD_IMS_SYSMUX;
- break;
-
- case S3C_I2SV2_CLKSRC_CDCLK:
- /* Error if controller doesn't have the CDCLKCON bit */
- if (!(i2s->feature & S3C_FEATURE_CDCLKCON))
- return -EINVAL;
-
- switch (dir) {
- case SND_SOC_CLOCK_IN:
- iismod |= S3C64XX_IISMOD_CDCLKCON;
- break;
- case SND_SOC_CLOCK_OUT:
- iismod &= ~S3C64XX_IISMOD_CDCLKCON;
- break;
- default:
- return -EINVAL;
- }
- break;
-
- default:
- return -EINVAL;
- }
-
- 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->cpu_dai);
- int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
- unsigned long irqs;
- int ret = 0;
- struct s3c_dma_params *dma_data =
- snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
-
- 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);
-
- /*
- * Load the next buffer to DMA to meet the reqirement
- * of the auto reload mechanism of S3C24XX.
- * This call won't bother S3C64XX.
- */
- s3c2410_dma_ctrl(dma_data->channel, S3C2410_DMAOP_STARTED);
-
- 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:
- switch (div) {
- case 16:
- div = S3C2412_IISMOD_BCLK_16FS;
- break;
-
- case 32:
- div = S3C2412_IISMOD_BCLK_32FS;
- break;
-
- case 24:
- div = S3C2412_IISMOD_BCLK_24FS;
- break;
-
- case 48:
- div = S3C2412_IISMOD_BCLK_48FS;
- break;
-
- default:
- return -EINVAL;
- }
-
- 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:
- 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;
-}
-
-static snd_pcm_sframes_t s3c2412_i2s_delay(struct snd_pcm_substream *substream,
- struct snd_soc_dai *dai)
-{
- struct s3c_i2sv2_info *i2s = to_info(dai);
- u32 reg = readl(i2s->regs + S3C2412_IISFIC);
- snd_pcm_sframes_t delay;
-
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- delay = S3C2412_IISFIC_TXCOUNT(reg);
- else
- delay = S3C2412_IISFIC_RXCOUNT(reg);
-
- return delay;
-}
-
-struct clk *s3c_i2sv2_get_clock(struct snd_soc_dai *cpu_dai)
-{
- struct s3c_i2sv2_info *i2s = to_info(cpu_dai);
- u32 iismod = readl(i2s->regs + S3C2412_IISMOD);
-
- if (iismod & S3C2412_IISMOD_IMS_SYSMUX)
- return i2s->iis_cclk;
- else
- return i2s->iis_pclk;
-}
-EXPORT_SYMBOL_GPL(s3c_i2sv2_get_clock);
-
-/* default table of all avaialable root fs divisors */
-static unsigned int iis_fs_tab[] = { 256, 512, 384, 768 };
-
-int s3c_i2sv2_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;
-
- pr_debug("Input clock rate %ldHz\n", clkrate);
-
- 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 "%ufs: div %u => result %u, 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=%u, div=%u, rate=%u\n",
- best_fs, best_div, best_rate);
-
- info->fs_div = best_fs;
- info->clk_div = best_div;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(s3c_i2sv2_iis_calc_rate);
-
-int s3c_i2sv2_probe(struct snd_soc_dai *dai,
- struct s3c_i2sv2_info *i2s,
- unsigned long base)
-{
- struct device *dev = dai->dev;
- unsigned int iismod;
-
- i2s->dev = dev;
-
- /* record our i2s structure for later use in the callbacks */
- snd_soc_dai_set_drvdata(dai, 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 (IS_ERR(i2s->iis_pclk)) {
- dev_err(dev, "failed to get iis_clock\n");
- iounmap(i2s->regs);
- return -ENOENT;
- }
-
- clk_enable(i2s->iis_pclk);
-
- /* Mark ourselves as in TXRX mode so we can run through our cleanup
- * process without warnings. */
- iismod = readl(i2s->regs + S3C2412_IISMOD);
- iismod |= S3C2412_IISMOD_MODE_TXRX;
- writel(iismod, i2s->regs + S3C2412_IISMOD);
- 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 device *dev, int id,
- struct snd_soc_dai_driver *drv)
-{
- struct snd_soc_dai_ops *ops = drv->ops;
-
- ops->trigger = s3c2412_i2s_trigger;
- if (!ops->hw_params)
- ops->hw_params = s3c_i2sv2_hw_params;
- ops->set_fmt = s3c2412_i2s_set_fmt;
- ops->set_clkdiv = s3c2412_i2s_set_clkdiv;
- ops->set_sysclk = s3c_i2sv2_set_sysclk;
-
- /* Allow overriding by (for example) IISv4 */
- if (!ops->delay)
- ops->delay = s3c2412_i2s_delay;
-
- drv->suspend = s3c2412_i2s_suspend;
- drv->resume = s3c2412_i2s_resume;
-
- return snd_soc_register_dai(dev, drv);
-}
-EXPORT_SYMBOL_GPL(s3c_i2sv2_register_dai);
-
-MODULE_LICENSE("GPL");