* (c) 2006 Wolfson Microelectronics PLC.
* Graeme Gregory graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
*
- * (c) 2004-2005 Simtec Electronics
+ * Copyright 2004-2005 Simtec Electronics
* http://armlinux.simtec.co.uk/
* Ben Dooks <ben@simtec.co.uk>
*
* 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.
- *
- *
- * Revision history
- * 11th Dec 2006 Merged with Simtec driver
- * 10th Nov 2006 Initial version.
*/
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/clk.h>
#include <linux/jiffies.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/initval.h>
#include <sound/soc.h>
-#include <asm/hardware.h>
-#include <asm/io.h>
-#include <asm/arch/regs-gpio.h>
-#include <asm/arch/regs-clock.h>
-#include <asm/arch/audio.h>
+#include <mach/hardware.h>
+#include <mach/regs-gpio.h>
+#include <mach/regs-clock.h>
+#include <plat/audio.h>
#include <asm/dma.h>
-#include <asm/arch/dma.h>
+#include <mach/dma.h>
-#include <asm/plat-s3c24xx/regs-iis.h>
+#include <plat/regs-iis.h>
#include "s3c24xx-pcm.h"
#include "s3c24xx-i2s.h"
-#define S3C24XX_I2S_DEBUG 0
-#if S3C24XX_I2S_DEBUG
-#define DBG(x...) printk(KERN_DEBUG x)
-#else
-#define DBG(x...)
-#endif
-
static struct s3c2410_dma_client s3c24xx_dma_client_out = {
.name = "I2S PCM Stereo out"
};
struct s3c24xx_i2s_info {
void __iomem *regs;
struct clk *iis_clk;
+ u32 iiscon;
+ u32 iismod;
+ u32 iisfcon;
+ u32 iispsr;
};
static struct s3c24xx_i2s_info s3c24xx_i2s;
u32 iiscon;
u32 iismod;
- DBG("Entered %s\n", __FUNCTION__);
+ pr_debug("Entered %s\n", __func__);
iisfcon = readl(s3c24xx_i2s.regs + S3C2410_IISFCON);
iiscon = readl(s3c24xx_i2s.regs + S3C2410_IISCON);
iismod = readl(s3c24xx_i2s.regs + S3C2410_IISMOD);
- DBG("r: IISCON: %lx IISMOD: %lx IISFCON: %lx\n", iiscon, iismod, iisfcon);
+ pr_debug("r: IISCON: %x IISMOD: %x IISFCON: %x\n", iiscon, iismod, iisfcon);
if (on) {
iisfcon |= S3C2410_IISFCON_TXDMA | S3C2410_IISFCON_TXENABLE;
writel(iismod, s3c24xx_i2s.regs + S3C2410_IISMOD);
}
- DBG("w: IISCON: %lx IISMOD: %lx IISFCON: %lx\n", iiscon, iismod, iisfcon);
+ pr_debug("w: IISCON: %x IISMOD: %x IISFCON: %x\n", iiscon, iismod, iisfcon);
}
static void s3c24xx_snd_rxctrl(int on)
u32 iiscon;
u32 iismod;
- DBG("Entered %s\n", __FUNCTION__);
+ pr_debug("Entered %s\n", __func__);
iisfcon = readl(s3c24xx_i2s.regs + S3C2410_IISFCON);
iiscon = readl(s3c24xx_i2s.regs + S3C2410_IISCON);
iismod = readl(s3c24xx_i2s.regs + S3C2410_IISMOD);
- DBG("r: IISCON: %lx IISMOD: %lx IISFCON: %lx\n", iiscon, iismod, iisfcon);
+ pr_debug("r: IISCON: %x IISMOD: %x IISFCON: %x\n", iiscon, iismod, iisfcon);
if (on) {
iisfcon |= S3C2410_IISFCON_RXDMA | S3C2410_IISFCON_RXENABLE;
* DMA engine will simply freeze randomly.
*/
- iisfcon &= ~S3C2410_IISFCON_RXENABLE;
- iisfcon &= ~S3C2410_IISFCON_RXDMA;
- iiscon |= S3C2410_IISCON_RXIDLE;
- iiscon &= ~S3C2410_IISCON_RXDMAEN;
+ iisfcon &= ~S3C2410_IISFCON_RXENABLE;
+ iisfcon &= ~S3C2410_IISFCON_RXDMA;
+ iiscon |= S3C2410_IISCON_RXIDLE;
+ iiscon &= ~S3C2410_IISCON_RXDMAEN;
iismod &= ~S3C2410_IISMOD_RXMODE;
writel(iisfcon, s3c24xx_i2s.regs + S3C2410_IISFCON);
writel(iismod, s3c24xx_i2s.regs + S3C2410_IISMOD);
}
- DBG("w: IISCON: %lx IISMOD: %lx IISFCON: %lx\n", iiscon, iismod, iisfcon);
+ pr_debug("w: IISCON: %x IISMOD: %x IISFCON: %x\n", iiscon, iismod, iisfcon);
}
/*
static int s3c24xx_snd_lrsync(void)
{
u32 iiscon;
- unsigned long timeout = jiffies + msecs_to_jiffies(5);
+ int timeout = 50; /* 5ms */
- DBG("Entered %s\n", __FUNCTION__);
+ pr_debug("Entered %s\n", __func__);
while (1) {
iiscon = readl(s3c24xx_i2s.regs + S3C2410_IISCON);
if (iiscon & S3C2410_IISCON_LRINDEX)
break;
- if (time_after(jiffies, timeout))
+ if (!timeout--)
return -ETIMEDOUT;
+ udelay(100);
}
return 0;
*/
static inline int s3c24xx_snd_is_clkmaster(void)
{
- DBG("Entered %s\n", __FUNCTION__);
+ pr_debug("Entered %s\n", __func__);
return (readl(s3c24xx_i2s.regs + S3C2410_IISMOD) & S3C2410_IISMOD_SLAVE) ? 0:1;
}
/*
* Set S3C24xx I2S DAI format
*/
-static int s3c24xx_i2s_set_fmt(struct snd_soc_cpu_dai *cpu_dai,
+static int s3c24xx_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
unsigned int fmt)
{
u32 iismod;
- DBG("Entered %s\n", __FUNCTION__);
+ pr_debug("Entered %s\n", __func__);
iismod = readl(s3c24xx_i2s.regs + S3C2410_IISMOD);
- DBG("hw_params r: IISMOD: %lx \n", iismod);
+ pr_debug("hw_params r: IISMOD: %x \n", iismod);
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
iismod |= S3C2410_IISMOD_SLAVE;
break;
case SND_SOC_DAIFMT_CBS_CFS:
+ iismod &= ~S3C2410_IISMOD_SLAVE;
break;
default:
return -EINVAL;
iismod |= S3C2410_IISMOD_MSB;
break;
case SND_SOC_DAIFMT_I2S:
+ iismod &= ~S3C2410_IISMOD_MSB;
break;
default:
return -EINVAL;
}
writel(iismod, s3c24xx_i2s.regs + S3C2410_IISMOD);
- DBG("hw_params w: IISMOD: %lx \n", iismod);
+ pr_debug("hw_params w: IISMOD: %x \n", iismod);
return 0;
}
static int s3c24xx_i2s_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
u32 iismod;
- DBG("Entered %s\n", __FUNCTION__);
+ pr_debug("Entered %s\n", __func__);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
rtd->dai->cpu_dai->dma_data = &s3c24xx_i2s_pcm_stereo_out;
/* Working copies of register */
iismod = readl(s3c24xx_i2s.regs + S3C2410_IISMOD);
- DBG("hw_params r: IISMOD: %lx\n", iismod);
+ pr_debug("hw_params r: IISMOD: %x\n", iismod);
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S8:
+ iismod &= ~S3C2410_IISMOD_16BIT;
+ ((struct s3c24xx_pcm_dma_params *)
+ rtd->dai->cpu_dai->dma_data)->dma_size = 1;
break;
case SNDRV_PCM_FORMAT_S16_LE:
iismod |= S3C2410_IISMOD_16BIT;
+ ((struct s3c24xx_pcm_dma_params *)
+ rtd->dai->cpu_dai->dma_data)->dma_size = 2;
break;
+ default:
+ return -EINVAL;
}
writel(iismod, s3c24xx_i2s.regs + S3C2410_IISMOD);
- DBG("hw_params w: IISMOD: %lx\n", iismod);
+ pr_debug("hw_params w: IISMOD: %x\n", iismod);
return 0;
}
-static int s3c24xx_i2s_trigger(struct snd_pcm_substream *substream, int cmd)
+static int s3c24xx_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
{
int ret = 0;
- DBG("Entered %s\n", __FUNCTION__);
+ pr_debug("Entered %s\n", __func__);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
/*
* Set S3C24xx Clock source
*/
-static int s3c24xx_i2s_set_sysclk(struct snd_soc_cpu_dai *cpu_dai,
+static int s3c24xx_i2s_set_sysclk(struct snd_soc_dai *cpu_dai,
int clk_id, unsigned int freq, int dir)
{
u32 iismod = readl(s3c24xx_i2s.regs + S3C2410_IISMOD);
- DBG("Entered %s\n", __FUNCTION__);
+ pr_debug("Entered %s\n", __func__);
iismod &= ~S3C2440_IISMOD_MPLL;
/*
* Set S3C24xx Clock dividers
*/
-static int s3c24xx_i2s_set_clkdiv(struct snd_soc_cpu_dai *cpu_dai,
+static int s3c24xx_i2s_set_clkdiv(struct snd_soc_dai *cpu_dai,
int div_id, int div)
{
u32 reg;
- DBG("Entered %s\n", __FUNCTION__);
+ pr_debug("Entered %s\n", __func__);
switch (div_id) {
case S3C24XX_DIV_BCLK:
}
EXPORT_SYMBOL_GPL(s3c24xx_i2s_get_clockrate);
-static int s3c24xx_i2s_probe(struct platform_device *pdev)
+static int s3c24xx_i2s_probe(struct platform_device *pdev,
+ struct snd_soc_dai *dai)
{
- DBG("Entered %s\n", __FUNCTION__);
+ pr_debug("Entered %s\n", __func__);
s3c24xx_i2s.regs = ioremap(S3C2410_PA_IIS, 0x100);
if (s3c24xx_i2s.regs == NULL)
return -ENXIO;
- s3c24xx_i2s.iis_clk=clk_get(&pdev->dev, "iis");
+ s3c24xx_i2s.iis_clk = clk_get(&pdev->dev, "iis");
if (s3c24xx_i2s.iis_clk == NULL) {
- DBG("failed to get iis_clock\n");
+ pr_err("failed to get iis_clock\n");
iounmap(s3c24xx_i2s.regs);
return -ENODEV;
}
return 0;
}
+#ifdef CONFIG_PM
+static int s3c24xx_i2s_suspend(struct snd_soc_dai *cpu_dai)
+{
+ pr_debug("Entered %s\n", __func__);
+
+ s3c24xx_i2s.iiscon = readl(s3c24xx_i2s.regs + S3C2410_IISCON);
+ s3c24xx_i2s.iismod = readl(s3c24xx_i2s.regs + S3C2410_IISMOD);
+ s3c24xx_i2s.iisfcon = readl(s3c24xx_i2s.regs + S3C2410_IISFCON);
+ s3c24xx_i2s.iispsr = readl(s3c24xx_i2s.regs + S3C2410_IISPSR);
+
+ clk_disable(s3c24xx_i2s.iis_clk);
+
+ return 0;
+}
+
+static int s3c24xx_i2s_resume(struct snd_soc_dai *cpu_dai)
+{
+ pr_debug("Entered %s\n", __func__);
+ clk_enable(s3c24xx_i2s.iis_clk);
+
+ writel(s3c24xx_i2s.iiscon, s3c24xx_i2s.regs + S3C2410_IISCON);
+ writel(s3c24xx_i2s.iismod, s3c24xx_i2s.regs + S3C2410_IISMOD);
+ writel(s3c24xx_i2s.iisfcon, s3c24xx_i2s.regs + S3C2410_IISFCON);
+ writel(s3c24xx_i2s.iispsr, s3c24xx_i2s.regs + S3C2410_IISPSR);
+
+ return 0;
+}
+#else
+#define s3c24xx_i2s_suspend NULL
+#define s3c24xx_i2s_resume NULL
+#endif
+
+
#define S3C24XX_I2S_RATES \
(SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | SNDRV_PCM_RATE_16000 | \
SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
-struct snd_soc_cpu_dai s3c24xx_i2s_dai = {
+static struct snd_soc_dai_ops s3c24xx_i2s_dai_ops = {
+ .trigger = s3c24xx_i2s_trigger,
+ .hw_params = s3c24xx_i2s_hw_params,
+ .set_fmt = s3c24xx_i2s_set_fmt,
+ .set_clkdiv = s3c24xx_i2s_set_clkdiv,
+ .set_sysclk = s3c24xx_i2s_set_sysclk,
+};
+
+struct snd_soc_dai s3c24xx_i2s_dai = {
.name = "s3c24xx-i2s",
.id = 0,
- .type = SND_SOC_DAI_I2S,
.probe = s3c24xx_i2s_probe,
+ .suspend = s3c24xx_i2s_suspend,
+ .resume = s3c24xx_i2s_resume,
.playback = {
.channels_min = 2,
.channels_max = 2,
.channels_max = 2,
.rates = S3C24XX_I2S_RATES,
.formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE,},
- .ops = {
- .trigger = s3c24xx_i2s_trigger,
- .hw_params = s3c24xx_i2s_hw_params,},
- .dai_ops = {
- .set_fmt = s3c24xx_i2s_set_fmt,
- .set_clkdiv = s3c24xx_i2s_set_clkdiv,
- .set_sysclk = s3c24xx_i2s_set_sysclk,
- },
+ .ops = &s3c24xx_i2s_dai_ops,
};
EXPORT_SYMBOL_GPL(s3c24xx_i2s_dai);
+static int __init s3c24xx_i2s_init(void)
+{
+ return snd_soc_register_dai(&s3c24xx_i2s_dai);
+}
+module_init(s3c24xx_i2s_init);
+
+static void __exit s3c24xx_i2s_exit(void)
+{
+ snd_soc_unregister_dai(&s3c24xx_i2s_dai);
+}
+module_exit(s3c24xx_i2s_exit);
+
/* Module information */
MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
MODULE_DESCRIPTION("s3c24xx I2S SoC Interface");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff