MERGE-via-pending-tracking-hist-MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-s3c64xx-dma-support-1235439162-1235439227

pending-tracking-hist top was MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-s3c64xx-dma-support-1235439162-1235439227 / 3d6a1b21cf5fbdb6250d781b0a4900a7a0768aa1 ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-stable-tracking-hist-MERGE-via-mokopatches-tracking-s3c64xx-dma-support-1235439162

stable-tracking-hist top was MERGE-via-mokopatches-tracking-s3c64xx-dma-support-1235439162 / 893e864e65adffc9eb085ed4f8b552a31dcec840 ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-mokopatches-tracking-hist-s3c64xx-dma-support

mokopatches-tracking-hist top was s3c64xx-dma-support / 2515f9a1d53d19b1e61d639875aedcbe7929666e ... parent commitmessage:
From: Ben Dooks <ben@simtec.co.uk>
S3C64XX: DMA support

Add support for the DMA blocks in the S3C64XX series
of CPUS, which are based on the ARM PL080 PrimeCell
system.

Unfortunately, these DMA controllers diverge from the
PL080 design by adding another DMA controller register
and configuration for OneNAND.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>

8 files changed, 312 insertions, 12 deletions

diff --git a/sound/soc/codecs/wm8731.c b/sound/soc/codecs/wm8731.c
index efbd4449bd3..6edd3447f5a 100644
--- a/sound/soc/codecs/wm8731.c
+++ b/sound/soc/codecs/wm8731.c
@@ -73,6 +73,8 @@ static inline void wm8731_write_reg_cache(struct snd_soc_codec *codec,
 	u16 *cache = codec->reg_cache;
 	if (reg >= WM8731_CACHEREGNUM)
 		return;
+
+	printk(KERN_INFO "%s: reg %d, val %04x\n", __func__, reg, value);
 	cache[reg] = value;
 }
 
@@ -84,6 +86,8 @@ static int wm8731_write(struct snd_soc_codec *codec, unsigned int reg,
 {
 	u8 data[2];
 
+	printk(KERN_INFO "%s: reg %d val %04x\n", __func__, reg, value);
+
 	/* data is
 	 *   D15..D9 WM8731 register offset
 	 *   D8...D0 register data
diff --git a/sound/soc/s3c24xx/Kconfig b/sound/soc/s3c24xx/Kconfig
index 11dcdfa663f..1ed87482b42 100644
--- a/sound/soc/s3c24xx/Kconfig
+++ b/sound/soc/s3c24xx/Kconfig
@@ -84,3 +84,11 @@ config SND_S3C24XX_SOC_S3C24XX_UDA134X
        	depends on SND_S3C24XX_SOC
        	select SND_S3C24XX_SOC_I2S
        	select SND_SOC_UDA134X
+
+config SND_S3C64XX_SOC_SMDK6410_WM8731
+	tristate "SoC I2S Audio support for WM8731 added to an SMDK6410"
+	depends on SND_S3C24XX_SOC
+	select SND_S3C64XX_SOC_I2S
+	select SND_SOC_WM8731
+	help
+	  Support for an WM8731 add-on board on I2S channel 0 on an SMDK6410
diff --git a/sound/soc/s3c24xx/Makefile b/sound/soc/s3c24xx/Makefile
index c1ff0e4bcde..08bd5874633 100644
--- a/sound/soc/s3c24xx/Makefile
+++ b/sound/soc/s3c24xx/Makefile
@@ -21,6 +21,7 @@ snd-soc-ln2440sbc-alc650-objs := ln2440sbc_alc650.o
 snd-soc-s3c24xx-uda134x-objs := s3c24xx_uda134x.o
 snd-soc-neo1973-gta02-wm8753-objs := neo1973_gta02_wm8753.o
 snd-soc-om-gta03-wm8753-objs := om_gta03_wm8753.o
+snd-soc-smdk6410-wm8731-objs := smdk6410-wm8731.o
 
 obj-$(CONFIG_SND_S3C24XX_SOC_JIVE_WM8750) += snd-soc-jive-wm8750.o
 obj-$(CONFIG_SND_S3C24XX_SOC_NEO1973_WM8753) += snd-soc-neo1973-wm8753.o
@@ -29,3 +30,4 @@ obj-$(CONFIG_SND_S3C24XX_SOC_LN2440SBC_ALC650) += snd-soc-ln2440sbc-alc650.o
 obj-$(CONFIG_SND_S3C24XX_SOC_S3C24XX_UDA134X) += snd-soc-s3c24xx-uda134x.o
 obj-$(CONFIG_SND_S3C24XX_SOC_NEO1973_GTA02_WM8753) += snd-soc-neo1973-gta02-wm8753.o
 obj-$(CONFIG_SND_S3C24XX_SOC_OM_GTA03_WM8753) += snd-soc-om-gta03-wm8753.o
+obj-$(CONFIG_SND_S3C64XX_SOC_SMDK6410_WM8731) += snd-soc-smdk6410-wm8731.o
diff --git a/sound/soc/s3c24xx/s3c-i2s-v2.c b/sound/soc/s3c24xx/s3c-i2s-v2.c
index 1dda7c85622..8a57f77d9a2 100644
--- a/sound/soc/s3c24xx/s3c-i2s-v2.c
+++ b/sound/soc/s3c24xx/s3c-i2s-v2.c
@@ -257,6 +257,25 @@ static int s3c2412_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
 	iismod = readl(i2s->regs + S3C2412_IISMOD);
 	DBG("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_CPU_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;
diff --git a/sound/soc/s3c24xx/s3c24xx-pcm.c b/sound/soc/s3c24xx/s3c24xx-pcm.c
index e797e862724..7458f00dfab 100644
--- a/sound/soc/s3c24xx/s3c24xx-pcm.c
+++ b/sound/soc/s3c24xx/s3c24xx-pcm.c
@@ -82,11 +82,19 @@ static void s3c24xx_pcm_enqueue(struct snd_pcm_substream *substream)
 {
 	struct s3c24xx_runtime_data *prtd = substream->runtime->private_data;
 	dma_addr_t pos = prtd->dma_pos;
+	unsigned int limit;
 	int ret;
 
 	DBG("Entered %s\n", __func__);
 
-	while (prtd->dma_loaded < prtd->dma_limit) {
+	if (s3c_dma_has_circular()) {
+		limit = (prtd->dma_end - prtd->dma_start) / prtd->dma_period;
+	} else
+		limit = prtd->dma_limit;
+
+	printk(KERN_INFO "%s: loaded %d, limit %d\n", __func__, prtd->dma_loaded, limit);
+
+	while (prtd->dma_loaded < limit) {
 		unsigned long len = prtd->dma_period;
 
 		DBG("dma_loaded: %d\n", prtd->dma_loaded);
@@ -130,7 +138,7 @@ static void s3c24xx_audio_buffdone(struct s3c2410_dma_chan *channel,
 		snd_pcm_period_elapsed(substream);
 
 	spin_lock(&prtd->lock);
-	if (prtd->state & ST_RUNNING) {
+	if (prtd->state & ST_RUNNING && !s3c_dma_has_circular()) {
 		prtd->dma_loaded--;
 		s3c24xx_pcm_enqueue(substream);
 	}
@@ -171,6 +179,11 @@ static int s3c24xx_pcm_hw_params(struct snd_pcm_substream *substream,
 			DBG(KERN_ERR "failed to get dma channel: %d\n", ret);
 			return ret;
 		}
+
+		/* use the circular buffering if we have it available. */
+		if (s3c_dma_has_circular())
+			s3c2410_dma_setflags(prtd->params->channel,
+					     S3C2410_DMAF_CIRCULAR);
 	}
 
 	s3c2410_dma_set_buffdone_fn(prtd->params->channel,
diff --git a/sound/soc/s3c24xx/s3c64xx-i2s.c b/sound/soc/s3c24xx/s3c64xx-i2s.c
index 2109b21ef9f..3334c747cc1 100644
--- a/sound/soc/s3c24xx/s3c64xx-i2s.c
+++ b/sound/soc/s3c24xx/s3c64xx-i2s.c
@@ -49,11 +49,13 @@ static struct s3c2410_dma_client s3c64xx_dma_client_in = {
 
 static struct s3c24xx_pcm_dma_params s3c64xx_i2s_pcm_stereo_out[2] = {
 	[0] = {
+		.channel	= DMACH_I2S0_OUT,
 		.client		= &s3c64xx_dma_client_out,
 		.dma_addr	= S3C64XX_PA_IIS0 + S3C2412_IISTXD,
 		.dma_size	= 4,
 	},
 	[1] = {
+		.channel	= DMACH_I2S1_OUT,
 		.client		= &s3c64xx_dma_client_out,
 		.dma_addr	= S3C64XX_PA_IIS1 + S3C2412_IISTXD,
 		.dma_size	= 4,
@@ -62,11 +64,13 @@ static struct s3c24xx_pcm_dma_params s3c64xx_i2s_pcm_stereo_out[2] = {
 
 static struct s3c24xx_pcm_dma_params s3c64xx_i2s_pcm_stereo_in[2] = {
 	[0] = {
+		.channel	= DMACH_I2S0_IN,
 		.client		= &s3c64xx_dma_client_in,
 		.dma_addr	= S3C64XX_PA_IIS0 + S3C2412_IISRXD,
 		.dma_size	= 4,
 	}, 
 	[1] = {
+		.channel	= DMACH_I2S1_IN,
 		.client		= &s3c64xx_dma_client_in,
 		.dma_addr	= S3C64XX_PA_IIS1 + S3C2412_IISRXD,
 		.dma_size	= 4,
@@ -75,16 +79,33 @@ static struct s3c24xx_pcm_dma_params s3c64xx_i2s_pcm_stereo_in[2] = {
 
 static struct s3c_i2sv2_info s3c64xx_i2s[2];
 
-static int s3c64xx_i2s_set_sysclk(struct snd_soc_dai *cpu_dai,
-				  int clk_id, unsigned int freq, int dir)
+static inline struct s3c_i2sv2_info *to_info(struct snd_soc_dai *cpu_dai)
 {
-	/* TODO */
-	return 0;
+	return cpu_dai->private_data;
 }
 
-static inline struct s3c_i2sv2_info *to_info(struct snd_soc_dai *cpu_dai)
+static int s3c64xx_i2s_set_sysclk(struct snd_soc_dai *cpu_dai,
+				  int clk_id, unsigned int freq, int dir)
 {
-	return cpu_dai->private_data;
+	struct s3c_i2sv2_info *i2s = to_info(cpu_dai);
+	u32 iismod = readl(i2s->regs + S3C2412_IISMOD);
+
+	switch (clk_id) {
+	case S3C64XX_CLKSRC_PCLK:
+		iismod &= ~S3C64XX_IISMOD_IMS_SYSMUX;
+		break;
+
+	case S3C64XX_CLKSRC_MUX:
+		iismod |= S3C64XX_IISMOD_IMS_SYSMUX;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	writel(iismod, i2s->regs + S3C2412_IISMOD);
+
+	return 0;
 }
 
 unsigned long s3c64xx_i2s_get_clockrate(struct snd_soc_dai *dai)
@@ -95,6 +116,11 @@ unsigned long s3c64xx_i2s_get_clockrate(struct snd_soc_dai *dai)
 }
 EXPORT_SYMBOL_GPL(s3c64xx_i2s_get_clockrate);
 
+static inline struct s3c_i2sv2_info *to_info(struct snd_soc_dai *cpu_dai)
+{
+	return cpu_dai->private_data;
+}
+
 static int s3c64xx_i2s_probe(struct platform_device *pdev,
 			     struct snd_soc_dai *dai)
 {
@@ -119,9 +145,9 @@ static int s3c64xx_i2s_probe(struct platform_device *pdev,
 	i2s->dma_capture = &s3c64xx_i2s_pcm_stereo_in[pdev->id];
 	i2s->dma_playback = &s3c64xx_i2s_pcm_stereo_out[pdev->id];
 
-	i2s->iis_cclk = clk_get(dev, "i2sclk");
-	if (i2s->iis_cclk == NULL) {
-		dev_err(dev, "failed to get i2sclk");
+	i2s->iis_cclk = clk_get(dev, "audio-bus");
+	if (IS_ERR(i2s->iis_cclk)) {
+		dev_err(dev, "failed to get audio-bus");
 		iounmap(i2s->regs);
 		return -ENODEV;
 	}
diff --git a/sound/soc/s3c24xx/s3c64xx-i2s.h b/sound/soc/s3c24xx/s3c64xx-i2s.h
index add574607ce..b7ffe3c38b6 100644
--- a/sound/soc/s3c24xx/s3c64xx-i2s.h
+++ b/sound/soc/s3c24xx/s3c64xx-i2s.h
@@ -21,7 +21,8 @@
 #define S3C64XX_DIV_RCLK	S3C_I2SV2_DIV_RCLK
 #define S3C64XX_DIV_PRESCALER	S3C_I2SV2_DIV_PRESCALER
 
-/* todo - define clock sources */
+#define S3C64XX_CLKSRC_PCLK	(0)
+#define S3C64XX_CLKSRC_MUX	(1)
 
 extern struct snd_soc_dai s3c64xx_i2s_dai;
 
diff --git a/sound/soc/s3c24xx/smdk6410-wm8731.c b/sound/soc/s3c24xx/smdk6410-wm8731.c
new file mode 100644
index 00000000000..e11d5d48a5c
--- /dev/null
+++ b/sound/soc/s3c24xx/smdk6410-wm8731.c
@@ -0,0 +1,227 @@
+
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/clk.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+#include <asm/mach-types.h>
+
+#include "../codecs/wm8731.h"
+#include "s3c64xx-i2s.h"
+
+static struct platform_device *socdev;
+
+
+
+static void wm_shutdown(struct snd_pcm_substream *substream)
+{
+	printk(KERN_INFO "%s: substream %p\n", __func__, substream);
+}
+
+static int wm_hw_params(struct snd_pcm_substream *substream,
+			struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
+	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+	unsigned int fmt;
+	int ret;
+
+	printk(KERN_INFO "%s: (%p,%p)\n", __func__, substream, params);
+	printk(KERN_INFO "%s: dai: cpu %p, codec %p\n", __func__, cpu_dai, codec_dai);
+
+	//fmt = SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS;
+	fmt = SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM;
+	fmt |= SND_SOC_DAIFMT_I2S;
+
+	ret = snd_soc_dai_set_fmt(codec_dai, fmt);
+	if (ret < 0)
+		return ret;
+
+	/* set cpu DAI configuration */
+	ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
+	if (ret < 0)
+		return ret;
+
+	if (fmt == (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM)) {
+		unsigned long iis_clkrate;
+
+		ret = snd_soc_dai_set_sysclk(cpu_dai, S3C64XX_CLKSRC_MUX, 0,
+					     SND_SOC_CLOCK_OUT);
+		if (ret < 0) {
+			printk(KERN_ERR "%s: cpu set_sysclk err\n", __func__);
+			return ret;
+		}
+
+		/* set prescaler division for sample rate */
+		ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C64XX_DIV_PRESCALER, 1);
+		if (ret < 0) {
+			printk(KERN_ERR "%s: codec clkdiv err\n", __func__);
+			return ret;
+		}
+
+		iis_clkrate = s3c64xx_i2s_get_clockrate(cpu_dai) / 2;
+		printk(KERN_INFO "%s: clockrate %ld\n", __func__, iis_clkrate);
+
+		iis_clkrate = 12000000; //tmphack//
+
+		/* set the codec system clock for DAC and ADC */
+		ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK,
+					     iis_clkrate,
+					     SND_SOC_CLOCK_IN);
+		if (ret < 0) {
+			printk(KERN_ERR "%s: codec sysclk err\n", __func__);
+			return ret;
+		}
+
+	} else {
+		/* TODO */
+		BUG();
+	}
+
+	return 0;
+}
+
+static int wm_startup(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);
+	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
+	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+	int ret;
+
+	ret = snd_soc_dai_set_sysclk(cpu_dai, S3C64XX_CLKSRC_MUX, 0,
+				     SND_SOC_CLOCK_OUT);
+	if (ret < 0) {
+		printk(KERN_ERR "%s: cpu set_sysclk err\n", __func__);
+		return ret;
+	}
+
+	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C64XX_DIV_PRESCALER, 1);
+	if (ret < 0) {
+		printk(KERN_ERR "%s: cpu set_clkdiv err\n", __func__);
+		return ret;
+	}
+
+	ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK,
+				     12000000, SND_SOC_CLOCK_IN);
+	if (ret < 0) {
+		printk(KERN_ERR "%s: codec sysclk err\n", __func__);
+		return ret;
+	}
+
+	return 0;
+}
+
+static struct snd_soc_ops wm_ops = {
+	.startup	= wm_startup,
+	.hw_params	= wm_hw_params,
+	.shutdown	= wm_shutdown,
+};
+
+static const struct snd_soc_dapm_widget widgets[] = {
+	SND_SOC_DAPM_LINE("Line Out", NULL),
+	SND_SOC_DAPM_HP("Headphone Jack", NULL),
+	SND_SOC_DAPM_INPUT("Line In"),
+};
+
+static const struct snd_soc_dapm_route intercon[] = {
+	/* headphone connected to LHPOUT1, RHPOUT1 */
+	{"Headphone Jack", NULL, "LHPOUT"},
+	{"Headphone Jack", NULL, "RHPOUT"},
+
+	{"Line Out", NULL, "LOUT" },
+	{"Line Out", NULL, "ROUT" },
+
+	{"LLINEIN", NULL, "Line In" },
+	{"RLINEIN", NULL, "Line In" },
+};
+
+static int wm_init(struct snd_soc_codec *codec)
+{
+	printk(KERN_DEBUG "%s: codec %p\n", __func__, codec);
+
+	snd_soc_dapm_new_controls(codec, widgets, ARRAY_SIZE(widgets));
+	snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
+
+	snd_soc_dapm_sync(codec);
+
+	return 0;
+}
+
+#include "s3c24xx-pcm.h"
+
+static struct snd_soc_dai_link wm_dai_link = {
+	.name		= "WM8731",
+	.stream_name	= "WM8731",
+	.cpu_dai	= &s3c64xx_i2s_dai,
+	.codec_dai	= &wm8731_dai,
+	.init		= wm_init,
+	.ops		= &wm_ops,
+};
+
+static struct snd_soc_card wm_card = {
+	.name		= "SMDK6410-WM8731",
+	.dai_link	= &wm_dai_link,
+	.platform	= &s3c24xx_soc_platform,
+	.num_links	= 1,
+};
+
+struct wm8731_setup_data wm_setup = {
+	.i2c_bus	= 0,
+	.i2c_address	= 0x1a,
+};
+
+static struct snd_soc_device wm_snd_devdata = {
+	.card		= &wm_card,
+	.codec_dev	= &soc_codec_dev_wm8731,
+	.codec_data	= &wm_setup,
+};
+
+static int __init smdk6410_wm8731_init(void)
+{
+	int ret;
+
+	printk(KERN_INFO "%s: welcome\n", __func__);
+
+	if (!machine_is_smdk6410()) {
+		printk(KERN_INFO "%s: for SMDK6410s\n", __func__);
+		return -ENOENT;
+	}
+
+	socdev = platform_device_alloc("soc-audio", 0);
+	if (!socdev) {
+		printk(KERN_ERR "%s: no device\n", __func__);
+		return -ENOMEM;
+	}
+
+	platform_set_drvdata(socdev, &wm_snd_devdata);
+
+	wm_snd_devdata.dev = &socdev->dev;
+
+	ret = platform_device_add(socdev);
+	if (ret) {
+		printk(KERN_ERR "%s: failed to add\n", __func__);
+		goto err_dev;
+	}
+
+	printk(KERN_INFO "%s: succesfull\n", __func__);
+	return 0;
+
+err_dev:
+	platform_device_put(socdev);
+	return ret;
+}
+
+module_init(smdk6410_wm8731_init);
+MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
+MODULE_LICENSE("GPL");