Merge branch 'topic/asoc' into for-linus

13 files changed, 802 insertions, 357 deletions

diff --git a/sound/soc/imx/Kconfig b/sound/soc/imx/Kconfig
index 738391757f2..810acaa0900 100644
--- a/sound/soc/imx/Kconfig
+++ b/sound/soc/imx/Kconfig
@@ -1,9 +1,6 @@
 menuconfig SND_IMX_SOC
 	tristate "SoC Audio for Freescale i.MX CPUs"
 	depends on ARCH_MXC
-	select SND_PCM
-	select FIQ
-	select SND_SOC_AC97_BUS
 	help
 	  Say Y or M if you want to add support for codecs attached to
 	  the i.MX SSI interface.
@@ -11,10 +8,23 @@ menuconfig SND_IMX_SOC
 
 if SND_IMX_SOC
 
+config SND_SOC_IMX_SSI
+	tristate
+
+config SND_SOC_IMX_PCM
+	tristate
+
 config SND_MXC_SOC_FIQ
 	tristate
+	select FIQ
+	select SND_SOC_IMX_PCM
 
 config SND_MXC_SOC_MX2
+	select SND_SOC_DMAENGINE_PCM
+	tristate
+	select SND_SOC_IMX_PCM
+
+config SND_SOC_IMX_AUDMUX
 	tristate
 
 config SND_MXC_SOC_WM1133_EV1
@@ -22,6 +32,8 @@ config SND_MXC_SOC_WM1133_EV1
 	depends on MACH_MX31ADS_WM1133_EV1 && EXPERIMENTAL
 	select SND_SOC_WM8350
 	select SND_MXC_SOC_FIQ
+	select SND_SOC_IMX_AUDMUX
+	select SND_SOC_IMX_SSI
 	help
 	  Enable support for audio on the i.MX31ADS with the WM1133-EV1
 	  PMIC board with WM8835x fitted.
@@ -31,6 +43,8 @@ config SND_SOC_MX27VIS_AIC32X4
 	depends on MACH_IMX27_VISSTRIM_M10 && I2C
 	select SND_SOC_TLV320AIC32X4
 	select SND_MXC_SOC_MX2
+	select SND_SOC_IMX_AUDMUX
+	select SND_SOC_IMX_SSI
 	help
 	  Say Y if you want to add support for SoC audio on Visstrim SM10
 	  board with TLV320AIC32X4 codec.
@@ -38,8 +52,11 @@ config SND_SOC_MX27VIS_AIC32X4
 config SND_SOC_PHYCORE_AC97
 	tristate "SoC Audio support for Phytec phyCORE (and phyCARD) boards"
 	depends on MACH_PCM043 || MACH_PCA100
+	select SND_SOC_AC97_BUS
 	select SND_SOC_WM9712
 	select SND_MXC_SOC_FIQ
+	select SND_SOC_IMX_AUDMUX
+	select SND_SOC_IMX_SSI
 	help
 	  Say Y if you want to add support for SoC audio on Phytec phyCORE
 	  and phyCARD boards in AC97 mode
@@ -53,6 +70,8 @@ config SND_SOC_EUKREA_TLV320
 	depends on I2C
 	select SND_SOC_TLV320AIC23
 	select SND_MXC_SOC_FIQ
+	select SND_SOC_IMX_AUDMUX
+	select SND_SOC_IMX_SSI
 	help
 	  Enable I2S based access to the TLV320AIC23B codec attached
 	  to the SSI interface
diff --git a/sound/soc/imx/Makefile b/sound/soc/imx/Makefile
index d6d609ba7e2..f5db3e92d0d 100644
--- a/sound/soc/imx/Makefile
+++ b/sound/soc/imx/Makefile
@@ -1,11 +1,14 @@
 # i.MX Platform Support
-snd-soc-imx-objs := imx-ssi.o
-snd-soc-imx-fiq-objs := imx-pcm-fiq.o
-snd-soc-imx-mx2-objs := imx-pcm-dma-mx2.o
+snd-soc-imx-ssi-objs := imx-ssi.o
+snd-soc-imx-audmux-objs := imx-audmux.o
 
-obj-$(CONFIG_SND_IMX_SOC) += snd-soc-imx.o
-obj-$(CONFIG_SND_MXC_SOC_FIQ) += snd-soc-imx-fiq.o
-obj-$(CONFIG_SND_MXC_SOC_MX2) += snd-soc-imx-mx2.o
+obj-$(CONFIG_SND_SOC_IMX_SSI) += snd-soc-imx-ssi.o
+obj-$(CONFIG_SND_SOC_IMX_AUDMUX) += snd-soc-imx-audmux.o
+
+obj-$(CONFIG_SND_SOC_IMX_PCM) += snd-soc-imx-pcm.o
+snd-soc-imx-pcm-y := imx-pcm.o
+snd-soc-imx-pcm-$(CONFIG_SND_MXC_SOC_FIQ) += imx-pcm-fiq.o
+snd-soc-imx-pcm-$(CONFIG_SND_MXC_SOC_MX2) += imx-pcm-dma-mx2.o
 
 # i.MX Machine Support
 snd-soc-eukrea-tlv320-objs := eukrea-tlv320.o
diff --git a/sound/soc/imx/eukrea-tlv320.c b/sound/soc/imx/eukrea-tlv320.c
index 1c1fdd10f73..7d4475cfdb2 100644
--- a/sound/soc/imx/eukrea-tlv320.c
+++ b/sound/soc/imx/eukrea-tlv320.c
@@ -26,6 +26,7 @@
 
 #include "../codecs/tlv320aic23.h"
 #include "imx-ssi.h"
+#include "imx-audmux.h"
 
 #define CODEC_CLOCK 12000000
 
@@ -97,12 +98,43 @@ static struct platform_device *eukrea_tlv320_snd_device;
 static int __init eukrea_tlv320_init(void)
 {
 	int ret;
-
-	if (!machine_is_eukrea_cpuimx27() && !machine_is_eukrea_cpuimx25sd()
-		&& !machine_is_eukrea_cpuimx35sd()
-		&& !machine_is_eukrea_cpuimx51sd())
+	int int_port = 0, ext_port;
+
+	if (machine_is_eukrea_cpuimx27()) {
+		imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
+			IMX_AUDMUX_V1_PCR_SYN |
+			IMX_AUDMUX_V1_PCR_TFSDIR |
+			IMX_AUDMUX_V1_PCR_TCLKDIR |
+			IMX_AUDMUX_V1_PCR_RFSDIR |
+			IMX_AUDMUX_V1_PCR_RCLKDIR |
+			IMX_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
+			IMX_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
+			IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4)
+		);
+		imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4,
+			IMX_AUDMUX_V1_PCR_SYN |
+			IMX_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
+		);
+	} else if (machine_is_eukrea_cpuimx25sd() ||
+		   machine_is_eukrea_cpuimx35sd() ||
+		   machine_is_eukrea_cpuimx51sd()) {
+		ext_port = machine_is_eukrea_cpuimx25sd() ? 4 : 3;
+		imx_audmux_v2_configure_port(int_port,
+			IMX_AUDMUX_V2_PTCR_SYN |
+			IMX_AUDMUX_V2_PTCR_TFSDIR |
+			IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
+			IMX_AUDMUX_V2_PTCR_TCLKDIR |
+			IMX_AUDMUX_V2_PTCR_TCSEL(ext_port),
+			IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port)
+		);
+		imx_audmux_v2_configure_port(ext_port,
+			IMX_AUDMUX_V2_PTCR_SYN,
+			IMX_AUDMUX_V2_PDCR_RXDSEL(int_port)
+		);
+	} else {
 		/* return happy. We might run on a totally different machine */
 		return 0;
+	}
 
 	eukrea_tlv320_snd_device = platform_device_alloc("soc-audio", -1);
 	if (!eukrea_tlv320_snd_device)
diff --git a/sound/soc/imx/imx-audmux.c b/sound/soc/imx/imx-audmux.c
new file mode 100644
index 00000000000..a839494c5ea
--- /dev/null
+++ b/sound/soc/imx/imx-audmux.c
@@ -0,0 +1,314 @@
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ * Copyright 2012 Linaro Ltd.
+ * Copyright 2009 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
+ *
+ * Initial development of this code was funded by
+ * Phytec Messtechnik GmbH, http://www.phytec.de
+ *
+ * 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 program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk.h>
+#include <linux/debugfs.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include "imx-audmux.h"
+
+#define DRIVER_NAME "imx-audmux"
+
+static struct clk *audmux_clk;
+static void __iomem *audmux_base;
+
+#define IMX_AUDMUX_V2_PTCR(x)		((x) * 8)
+#define IMX_AUDMUX_V2_PDCR(x)		((x) * 8 + 4)
+
+#ifdef CONFIG_DEBUG_FS
+static struct dentry *audmux_debugfs_root;
+
+static int audmux_open_file(struct inode *inode, struct file *file)
+{
+	file->private_data = inode->i_private;
+	return 0;
+}
+
+/* There is an annoying discontinuity in the SSI numbering with regard
+ * to the Linux number of the devices */
+static const char *audmux_port_string(int port)
+{
+	switch (port) {
+	case MX31_AUDMUX_PORT1_SSI0:
+		return "imx-ssi.0";
+	case MX31_AUDMUX_PORT2_SSI1:
+		return "imx-ssi.1";
+	case MX31_AUDMUX_PORT3_SSI_PINS_3:
+		return "SSI3";
+	case MX31_AUDMUX_PORT4_SSI_PINS_4:
+		return "SSI4";
+	case MX31_AUDMUX_PORT5_SSI_PINS_5:
+		return "SSI5";
+	case MX31_AUDMUX_PORT6_SSI_PINS_6:
+		return "SSI6";
+	default:
+		return "UNKNOWN";
+	}
+}
+
+static ssize_t audmux_read_file(struct file *file, char __user *user_buf,
+				size_t count, loff_t *ppos)
+{
+	ssize_t ret;
+	char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
+	int port = (int)file->private_data;
+	u32 pdcr, ptcr;
+
+	if (!buf)
+		return -ENOMEM;
+
+	if (audmux_clk)
+		clk_enable(audmux_clk);
+
+	ptcr = readl(audmux_base + IMX_AUDMUX_V2_PTCR(port));
+	pdcr = readl(audmux_base + IMX_AUDMUX_V2_PDCR(port));
+
+	if (audmux_clk)
+		clk_disable(audmux_clk);
+
+	ret = snprintf(buf, PAGE_SIZE, "PDCR: %08x\nPTCR: %08x\n",
+		       pdcr, ptcr);
+
+	if (ptcr & IMX_AUDMUX_V2_PTCR_TFSDIR)
+		ret += snprintf(buf + ret, PAGE_SIZE - ret,
+				"TxFS output from %s, ",
+				audmux_port_string((ptcr >> 27) & 0x7));
+	else
+		ret += snprintf(buf + ret, PAGE_SIZE - ret,
+				"TxFS input, ");
+
+	if (ptcr & IMX_AUDMUX_V2_PTCR_TCLKDIR)
+		ret += snprintf(buf + ret, PAGE_SIZE - ret,
+				"TxClk output from %s",
+				audmux_port_string((ptcr >> 22) & 0x7));
+	else
+		ret += snprintf(buf + ret, PAGE_SIZE - ret,
+				"TxClk input");
+
+	ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n");
+
+	if (ptcr & IMX_AUDMUX_V2_PTCR_SYN) {
+		ret += snprintf(buf + ret, PAGE_SIZE - ret,
+				"Port is symmetric");
+	} else {
+		if (ptcr & IMX_AUDMUX_V2_PTCR_RFSDIR)
+			ret += snprintf(buf + ret, PAGE_SIZE - ret,
+					"RxFS output from %s, ",
+					audmux_port_string((ptcr >> 17) & 0x7));
+		else
+			ret += snprintf(buf + ret, PAGE_SIZE - ret,
+					"RxFS input, ");
+
+		if (ptcr & IMX_AUDMUX_V2_PTCR_RCLKDIR)
+			ret += snprintf(buf + ret, PAGE_SIZE - ret,
+					"RxClk output from %s",
+					audmux_port_string((ptcr >> 12) & 0x7));
+		else
+			ret += snprintf(buf + ret, PAGE_SIZE - ret,
+					"RxClk input");
+	}
+
+	ret += snprintf(buf + ret, PAGE_SIZE - ret,
+			"\nData received from %s\n",
+			audmux_port_string((pdcr >> 13) & 0x7));
+
+	ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
+
+	kfree(buf);
+
+	return ret;
+}
+
+static const struct file_operations audmux_debugfs_fops = {
+	.open = audmux_open_file,
+	.read = audmux_read_file,
+	.llseek = default_llseek,
+};
+
+static void __init audmux_debugfs_init(void)
+{
+	int i;
+	char buf[20];
+
+	audmux_debugfs_root = debugfs_create_dir("audmux", NULL);
+	if (!audmux_debugfs_root) {
+		pr_warning("Failed to create AUDMUX debugfs root\n");
+		return;
+	}
+
+	for (i = 1; i < 8; i++) {
+		snprintf(buf, sizeof(buf), "ssi%d", i);
+		if (!debugfs_create_file(buf, 0444, audmux_debugfs_root,
+					 (void *)i, &audmux_debugfs_fops))
+			pr_warning("Failed to create AUDMUX port %d debugfs file\n",
+				   i);
+	}
+}
+
+static void __devexit audmux_debugfs_remove(void)
+{
+	debugfs_remove_recursive(audmux_debugfs_root);
+}
+#else
+static inline void audmux_debugfs_init(void)
+{
+}
+
+static inline void audmux_debugfs_remove(void)
+{
+}
+#endif
+
+enum imx_audmux_type {
+	IMX21_AUDMUX,
+	IMX31_AUDMUX,
+} audmux_type;
+
+static struct platform_device_id imx_audmux_ids[] = {
+	{
+		.name = "imx21-audmux",
+		.driver_data = IMX21_AUDMUX,
+	}, {
+		.name = "imx31-audmux",
+		.driver_data = IMX31_AUDMUX,
+	}, {
+		/* sentinel */
+	}
+};
+MODULE_DEVICE_TABLE(platform, imx_audmux_ids);
+
+static const struct of_device_id imx_audmux_dt_ids[] = {
+	{ .compatible = "fsl,imx21-audmux", .data = &imx_audmux_ids[0], },
+	{ .compatible = "fsl,imx31-audmux", .data = &imx_audmux_ids[1], },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, imx_audmux_dt_ids);
+
+static const uint8_t port_mapping[] = {
+	0x0, 0x4, 0x8, 0x10, 0x14, 0x1c,
+};
+
+int imx_audmux_v1_configure_port(unsigned int port, unsigned int pcr)
+{
+	if (audmux_type != IMX21_AUDMUX)
+		return -EINVAL;
+
+	if (!audmux_base)
+		return -ENOSYS;
+
+	if (port >= ARRAY_SIZE(port_mapping))
+		return -EINVAL;
+
+	writel(pcr, audmux_base + port_mapping[port]);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(imx_audmux_v1_configure_port);
+
+int imx_audmux_v2_configure_port(unsigned int port, unsigned int ptcr,
+		unsigned int pdcr)
+{
+	if (audmux_type != IMX31_AUDMUX)
+		return -EINVAL;
+
+	if (!audmux_base)
+		return -ENOSYS;
+
+	if (audmux_clk)
+		clk_enable(audmux_clk);
+
+	writel(ptcr, audmux_base + IMX_AUDMUX_V2_PTCR(port));
+	writel(pdcr, audmux_base + IMX_AUDMUX_V2_PDCR(port));
+
+	if (audmux_clk)
+		clk_disable(audmux_clk);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(imx_audmux_v2_configure_port);
+
+static int __devinit imx_audmux_probe(struct platform_device *pdev)
+{
+	struct resource *res;
+	const struct of_device_id *of_id =
+			of_match_device(imx_audmux_dt_ids, &pdev->dev);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	audmux_base = devm_request_and_ioremap(&pdev->dev, res);
+	if (!audmux_base)
+		return -EADDRNOTAVAIL;
+
+	audmux_clk = clk_get(&pdev->dev, "audmux");
+	if (IS_ERR(audmux_clk)) {
+		dev_dbg(&pdev->dev, "cannot get clock: %ld\n",
+				PTR_ERR(audmux_clk));
+		audmux_clk = NULL;
+	}
+
+	if (of_id)
+		pdev->id_entry = of_id->data;
+	audmux_type = pdev->id_entry->driver_data;
+	if (audmux_type == IMX31_AUDMUX)
+		audmux_debugfs_init();
+
+	return 0;
+}
+
+static int __devexit imx_audmux_remove(struct platform_device *pdev)
+{
+	if (audmux_type == IMX31_AUDMUX)
+		audmux_debugfs_remove();
+	clk_put(audmux_clk);
+
+	return 0;
+}
+
+static struct platform_driver imx_audmux_driver = {
+	.probe		= imx_audmux_probe,
+	.remove		= __devexit_p(imx_audmux_remove),
+	.id_table	= imx_audmux_ids,
+	.driver	= {
+		.name	= DRIVER_NAME,
+		.owner	= THIS_MODULE,
+		.of_match_table = imx_audmux_dt_ids,
+	}
+};
+
+static int __init imx_audmux_init(void)
+{
+	return platform_driver_register(&imx_audmux_driver);
+}
+subsys_initcall(imx_audmux_init);
+
+static void __exit imx_audmux_exit(void)
+{
+	platform_driver_unregister(&imx_audmux_driver);
+}
+module_exit(imx_audmux_exit);
+
+MODULE_DESCRIPTION("Freescale i.MX AUDMUX driver");
+MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRIVER_NAME);
diff --git a/sound/soc/imx/imx-audmux.h b/sound/soc/imx/imx-audmux.h
new file mode 100644
index 00000000000..04ebbab8d7b
--- /dev/null
+++ b/sound/soc/imx/imx-audmux.h
@@ -0,0 +1,60 @@
+#ifndef __IMX_AUDMUX_H
+#define __IMX_AUDMUX_H
+
+#define MX27_AUDMUX_HPCR1_SSI0		0
+#define MX27_AUDMUX_HPCR2_SSI1		1
+#define MX27_AUDMUX_HPCR3_SSI_PINS_4	2
+#define MX27_AUDMUX_PPCR1_SSI_PINS_1	3
+#define MX27_AUDMUX_PPCR2_SSI_PINS_2	4
+#define MX27_AUDMUX_PPCR3_SSI_PINS_3	5
+
+#define MX31_AUDMUX_PORT1_SSI0		0
+#define MX31_AUDMUX_PORT2_SSI1		1
+#define MX31_AUDMUX_PORT3_SSI_PINS_3	2
+#define MX31_AUDMUX_PORT4_SSI_PINS_4	3
+#define MX31_AUDMUX_PORT5_SSI_PINS_5	4
+#define MX31_AUDMUX_PORT6_SSI_PINS_6	5
+
+#define MX51_AUDMUX_PORT1_SSI0		0
+#define MX51_AUDMUX_PORT2_SSI1		1
+#define MX51_AUDMUX_PORT3		2
+#define MX51_AUDMUX_PORT4		3
+#define MX51_AUDMUX_PORT5		4
+#define MX51_AUDMUX_PORT6		5
+#define MX51_AUDMUX_PORT7		6
+
+/* Register definitions for the i.MX21/27 Digital Audio Multiplexer */
+#define IMX_AUDMUX_V1_PCR_INMMASK(x)	((x) & 0xff)
+#define IMX_AUDMUX_V1_PCR_INMEN		(1 << 8)
+#define IMX_AUDMUX_V1_PCR_TXRXEN	(1 << 10)
+#define IMX_AUDMUX_V1_PCR_SYN		(1 << 12)
+#define IMX_AUDMUX_V1_PCR_RXDSEL(x)	(((x) & 0x7) << 13)
+#define IMX_AUDMUX_V1_PCR_RFCSEL(x)	(((x) & 0xf) << 20)
+#define IMX_AUDMUX_V1_PCR_RCLKDIR	(1 << 24)
+#define IMX_AUDMUX_V1_PCR_RFSDIR	(1 << 25)
+#define IMX_AUDMUX_V1_PCR_TFCSEL(x)	(((x) & 0xf) << 26)
+#define IMX_AUDMUX_V1_PCR_TCLKDIR	(1 << 30)
+#define IMX_AUDMUX_V1_PCR_TFSDIR	(1 << 31)
+
+/* Register definitions for the i.MX25/31/35/51 Digital Audio Multiplexer */
+#define IMX_AUDMUX_V2_PTCR_TFSDIR	(1 << 31)
+#define IMX_AUDMUX_V2_PTCR_TFSEL(x)	(((x) & 0xf) << 27)
+#define IMX_AUDMUX_V2_PTCR_TCLKDIR	(1 << 26)
+#define IMX_AUDMUX_V2_PTCR_TCSEL(x)	(((x) & 0xf) << 22)
+#define IMX_AUDMUX_V2_PTCR_RFSDIR	(1 << 21)
+#define IMX_AUDMUX_V2_PTCR_RFSEL(x)	(((x) & 0xf) << 17)
+#define IMX_AUDMUX_V2_PTCR_RCLKDIR	(1 << 16)
+#define IMX_AUDMUX_V2_PTCR_RCSEL(x)	(((x) & 0xf) << 12)
+#define IMX_AUDMUX_V2_PTCR_SYN		(1 << 11)
+
+#define IMX_AUDMUX_V2_PDCR_RXDSEL(x)	(((x) & 0x7) << 13)
+#define IMX_AUDMUX_V2_PDCR_TXRXEN	(1 << 12)
+#define IMX_AUDMUX_V2_PDCR_MODE(x)	(((x) & 0x3) << 8)
+#define IMX_AUDMUX_V2_PDCR_INMMASK(x)	((x) & 0xff)
+
+int imx_audmux_v1_configure_port(unsigned int port, unsigned int pcr);
+
+int imx_audmux_v2_configure_port(unsigned int port, unsigned int ptcr,
+		unsigned int pdcr);
+
+#endif /* __IMX_AUDMUX_H */
diff --git a/sound/soc/imx/imx-pcm-dma-mx2.c b/sound/soc/imx/imx-pcm-dma-mx2.c
index 5780c9b9d56..e43c8fa2788 100644
--- a/sound/soc/imx/imx-pcm-dma-mx2.c
+++ b/sound/soc/imx/imx-pcm-dma-mx2.c
@@ -27,212 +27,54 @@
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/soc.h>
+#include <sound/dmaengine_pcm.h>
 
 #include <mach/dma.h>
 
-#include "imx-ssi.h"
-
-struct imx_pcm_runtime_data {
-	int period_bytes;
-	int periods;
-	int dma;
-	unsigned long offset;
-	unsigned long size;
-	void *buf;
-	int period_time;
-	struct dma_async_tx_descriptor *desc;
-	struct dma_chan *dma_chan;
-	struct imx_dma_data dma_data;
-};
-
-static void audio_dma_irq(void *data)
-{
-	struct snd_pcm_substream *substream = (struct snd_pcm_substream *)data;
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct imx_pcm_runtime_data *iprtd = runtime->private_data;
-
-	iprtd->offset += iprtd->period_bytes;
-	iprtd->offset %= iprtd->period_bytes * iprtd->periods;
-
-	snd_pcm_period_elapsed(substream);
-}
+#include "imx-pcm.h"
 
 static bool filter(struct dma_chan *chan, void *param)
 {
-	struct imx_pcm_runtime_data *iprtd = param;
-
 	if (!imx_dma_is_general_purpose(chan))
 		return false;
 
-        chan->private = &iprtd->dma_data;
+	chan->private = param;
 
-        return true;
+	return true;
 }
 
-static int imx_ssi_dma_alloc(struct snd_pcm_substream *substream,
+static int snd_imx_pcm_hw_params(struct snd_pcm_substream *substream,
 				struct snd_pcm_hw_params *params)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct dma_chan *chan = snd_dmaengine_pcm_get_chan(substream);
 	struct imx_pcm_dma_params *dma_params;
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct imx_pcm_runtime_data *iprtd = runtime->private_data;
 	struct dma_slave_config slave_config;
-	dma_cap_mask_t mask;
-	enum dma_slave_buswidth buswidth;
 	int ret;
 
 	dma_params = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
 
-	iprtd->dma_data.peripheral_type = IMX_DMATYPE_SSI;
-	iprtd->dma_data.priority = DMA_PRIO_HIGH;
-	iprtd->dma_data.dma_request = dma_params->dma;
-
-	/* Try to grab a DMA channel */
-	if (!iprtd->dma_chan) {
-		dma_cap_zero(mask);
-		dma_cap_set(DMA_SLAVE, mask);
-		iprtd->dma_chan = dma_request_channel(mask, filter, iprtd);
-		if (!iprtd->dma_chan)
-			return -EINVAL;
-	}
-
-	switch (params_format(params)) {
-	case SNDRV_PCM_FORMAT_S16_LE:
-		buswidth = DMA_SLAVE_BUSWIDTH_2_BYTES;
-		break;
-	case SNDRV_PCM_FORMAT_S20_3LE:
-	case SNDRV_PCM_FORMAT_S24_LE:
-		buswidth = DMA_SLAVE_BUSWIDTH_4_BYTES;
-		break;
-	default:
-		return 0;
-	}
+	ret = snd_hwparams_to_dma_slave_config(substream, params, &slave_config);
+	if (ret)
+		return ret;
 
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		slave_config.direction = DMA_MEM_TO_DEV;
 		slave_config.dst_addr = dma_params->dma_addr;
-		slave_config.dst_addr_width = buswidth;
 		slave_config.dst_maxburst = dma_params->burstsize;
 	} else {
-		slave_config.direction = DMA_DEV_TO_MEM;
 		slave_config.src_addr = dma_params->dma_addr;
-		slave_config.src_addr_width = buswidth;
 		slave_config.src_maxburst = dma_params->burstsize;
 	}
 
-	ret = dmaengine_slave_config(iprtd->dma_chan, &slave_config);
+	ret = dmaengine_slave_config(chan, &slave_config);
 	if (ret)
 		return ret;
 
-	return 0;
-}
-
-static int snd_imx_pcm_hw_params(struct snd_pcm_substream *substream,
-				struct snd_pcm_hw_params *params)
-{
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct imx_pcm_runtime_data *iprtd = runtime->private_data;
-	unsigned long dma_addr;
-	struct dma_chan *chan;
-	struct imx_pcm_dma_params *dma_params;
-	int ret;
-
-	dma_params = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
-	ret = imx_ssi_dma_alloc(substream, params);
-	if (ret)
-		return ret;
-	chan = iprtd->dma_chan;
-
-	iprtd->size = params_buffer_bytes(params);
-	iprtd->periods = params_periods(params);
-	iprtd->period_bytes = params_period_bytes(params);
-	iprtd->offset = 0;
-	iprtd->period_time = HZ / (params_rate(params) /
-			params_period_size(params));
-
 	snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
 
-	dma_addr = runtime->dma_addr;
-
-	iprtd->buf = (unsigned int *)substream->dma_buffer.area;
-
-	iprtd->desc = chan->device->device_prep_dma_cyclic(chan, dma_addr,
-			iprtd->period_bytes * iprtd->periods,
-			iprtd->period_bytes,
-			substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
-			DMA_MEM_TO_DEV : DMA_DEV_TO_MEM);
-	if (!iprtd->desc) {
-		dev_err(&chan->dev->device, "cannot prepare slave dma\n");
-		return -EINVAL;
-	}
-
-	iprtd->desc->callback = audio_dma_irq;
-	iprtd->desc->callback_param = substream;
-
-	return 0;
-}
-
-static int snd_imx_pcm_hw_free(struct snd_pcm_substream *substream)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct imx_pcm_runtime_data *iprtd = runtime->private_data;
-
-	if (iprtd->dma_chan) {
-		dma_release_channel(iprtd->dma_chan);
-		iprtd->dma_chan = NULL;
-	}
-
-	return 0;
-}
-
-static int snd_imx_pcm_prepare(struct snd_pcm_substream *substream)
-{
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct imx_pcm_dma_params *dma_params;
-
-	dma_params = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
-
 	return 0;
 }
 
-static int snd_imx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct imx_pcm_runtime_data *iprtd = runtime->private_data;
-
-	switch (cmd) {
-	case SNDRV_PCM_TRIGGER_START:
-	case SNDRV_PCM_TRIGGER_RESUME:
-	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
-		dmaengine_submit(iprtd->desc);
-
-		break;
-
-	case SNDRV_PCM_TRIGGER_STOP:
-	case SNDRV_PCM_TRIGGER_SUSPEND:
-	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
-		dmaengine_terminate_all(iprtd->dma_chan);
-
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static snd_pcm_uframes_t snd_imx_pcm_pointer(struct snd_pcm_substream *substream)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct imx_pcm_runtime_data *iprtd = runtime->private_data;
-
-	pr_debug("%s: %ld %ld\n", __func__, iprtd->offset,
-			bytes_to_frames(substream->runtime, iprtd->offset));
-
-	return bytes_to_frames(substream->runtime, iprtd->offset);
-}
-
 static struct snd_pcm_hardware snd_imx_hardware = {
 	.info = SNDRV_PCM_INFO_INTERLEAVED |
 		SNDRV_PCM_INFO_BLOCK_TRANSFER |
@@ -254,33 +96,37 @@ static struct snd_pcm_hardware snd_imx_hardware = {
 
 static int snd_imx_open(struct snd_pcm_substream *substream)
 {
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct imx_pcm_runtime_data *iprtd;
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct imx_pcm_dma_params *dma_params;
+	struct imx_dma_data *dma_data;
 	int ret;
 
-	iprtd = kzalloc(sizeof(*iprtd), GFP_KERNEL);
-	if (iprtd == NULL)
-		return -ENOMEM;
-	runtime->private_data = iprtd;
+	snd_soc_set_runtime_hwparams(substream, &snd_imx_hardware);
 
-	ret = snd_pcm_hw_constraint_integer(substream->runtime,
-			SNDRV_PCM_HW_PARAM_PERIODS);
-	if (ret < 0) {
-		kfree(iprtd);
-		return ret;
+	dma_params = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
+
+	dma_data = kzalloc(sizeof(*dma_data), GFP_KERNEL);
+	dma_data->peripheral_type = IMX_DMATYPE_SSI;
+	dma_data->priority = DMA_PRIO_HIGH;
+	dma_data->dma_request = dma_params->dma;
+
+	ret = snd_dmaengine_pcm_open(substream, filter, dma_data);
+	if (ret) {
+		kfree(dma_data);
+		return 0;
 	}
 
-	snd_soc_set_runtime_hwparams(substream, &snd_imx_hardware);
+	snd_dmaengine_pcm_set_data(substream, dma_data);
 
 	return 0;
 }
 
 static int snd_imx_close(struct snd_pcm_substream *substream)
 {
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct imx_pcm_runtime_data *iprtd = runtime->private_data;
+	struct imx_dma_data *dma_data = snd_dmaengine_pcm_get_data(substream);
 
-	kfree(iprtd);
+	snd_dmaengine_pcm_close(substream);
+	kfree(dma_data);
 
 	return 0;
 }
@@ -290,10 +136,8 @@ static struct snd_pcm_ops imx_pcm_ops = {
 	.close		= snd_imx_close,
 	.ioctl		= snd_pcm_lib_ioctl,
 	.hw_params	= snd_imx_pcm_hw_params,
-	.hw_free	= snd_imx_pcm_hw_free,
-	.prepare	= snd_imx_pcm_prepare,
-	.trigger	= snd_imx_pcm_trigger,
-	.pointer	= snd_imx_pcm_pointer,
+	.trigger	= snd_dmaengine_pcm_trigger,
+	.pointer	= snd_dmaengine_pcm_pointer,
 	.mmap		= snd_imx_pcm_mmap,
 };
 
@@ -305,11 +149,6 @@ static struct snd_soc_platform_driver imx_soc_platform_mx2 = {
 
 static int __devinit imx_soc_platform_probe(struct platform_device *pdev)
 {
-	struct imx_ssi *ssi = platform_get_drvdata(pdev);
-
-	ssi->dma_params_tx.burstsize = 6;
-	ssi->dma_params_rx.burstsize = 4;
-
 	return snd_soc_register_platform(&pdev->dev, &imx_soc_platform_mx2);
 }
 
diff --git a/sound/soc/imx/imx-pcm.c b/sound/soc/imx/imx-pcm.c
new file mode 100644
index 00000000000..93dc360b177
--- /dev/null
+++ b/sound/soc/imx/imx-pcm.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright 2009 Sascha Hauer <s.hauer@pengutronix.de>
+ *
+ * This code is based on code copyrighted by Freescale,
+ * Liam Girdwood, Javier Martin and probably others.
+ *
+ * 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/dma-mapping.h>
+#include <linux/module.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include "imx-pcm.h"
+
+int snd_imx_pcm_mmap(struct snd_pcm_substream *substream,
+		struct vm_area_struct *vma)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	int ret;
+
+	ret = dma_mmap_writecombine(substream->pcm->card->dev, vma,
+		runtime->dma_area, runtime->dma_addr, runtime->dma_bytes);
+
+	pr_debug("%s: ret: %d %p 0x%08x 0x%08x\n", __func__, ret,
+			runtime->dma_area,
+			runtime->dma_addr,
+			runtime->dma_bytes);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(snd_imx_pcm_mmap);
+
+static int imx_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream)
+{
+	struct snd_pcm_substream *substream = pcm->streams[stream].substream;
+	struct snd_dma_buffer *buf = &substream->dma_buffer;
+	size_t size = IMX_SSI_DMABUF_SIZE;
+
+	buf->dev.type = SNDRV_DMA_TYPE_DEV;
+	buf->dev.dev = pcm->card->dev;
+	buf->private_data = NULL;
+	buf->area = dma_alloc_writecombine(pcm->card->dev, size,
+					   &buf->addr, GFP_KERNEL);
+	if (!buf->area)
+		return -ENOMEM;
+	buf->bytes = size;
+
+	return 0;
+}
+
+static u64 imx_pcm_dmamask = DMA_BIT_MASK(32);
+
+int imx_pcm_new(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_card *card = rtd->card->snd_card;
+	struct snd_pcm *pcm = rtd->pcm;
+	int ret = 0;
+
+	if (!card->dev->dma_mask)
+		card->dev->dma_mask = &imx_pcm_dmamask;
+	if (!card->dev->coherent_dma_mask)
+		card->dev->coherent_dma_mask = DMA_BIT_MASK(32);
+	if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) {
+		ret = imx_pcm_preallocate_dma_buffer(pcm,
+			SNDRV_PCM_STREAM_PLAYBACK);
+		if (ret)
+			goto out;
+	}
+
+	if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
+		ret = imx_pcm_preallocate_dma_buffer(pcm,
+			SNDRV_PCM_STREAM_CAPTURE);
+		if (ret)
+			goto out;
+	}
+
+out:
+	return ret;
+}
+EXPORT_SYMBOL_GPL(imx_pcm_new);
+
+void imx_pcm_free(struct snd_pcm *pcm)
+{
+	struct snd_pcm_substream *substream;
+	struct snd_dma_buffer *buf;
+	int stream;
+
+	for (stream = 0; stream < 2; stream++) {
+		substream = pcm->streams[stream].substream;
+		if (!substream)
+			continue;
+
+		buf = &substream->dma_buffer;
+		if (!buf->area)
+			continue;
+
+		dma_free_writecombine(pcm->card->dev, buf->bytes,
+				      buf->area, buf->addr);
+		buf->area = NULL;
+	}
+}
+EXPORT_SYMBOL_GPL(imx_pcm_free);
diff --git a/sound/soc/imx/imx-pcm.h b/sound/soc/imx/imx-pcm.h
new file mode 100644
index 00000000000..b5f5c3acf34
--- /dev/null
+++ b/sound/soc/imx/imx-pcm.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2009 Sascha Hauer <s.hauer@pengutronix.de>
+ *
+ * This code is based on code copyrighted by Freescale,
+ * Liam Girdwood, Javier Martin and probably others.
+ *
+ * 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.
+ */
+
+#ifndef _IMX_PCM_H
+#define _IMX_PCM_H
+
+/*
+ * Do not change this as the FIQ handler depends on this size
+ */
+#define IMX_SSI_DMABUF_SIZE	(64 * 1024)
+
+struct imx_pcm_dma_params {
+	int dma;
+	unsigned long dma_addr;
+	int burstsize;
+};
+
+int snd_imx_pcm_mmap(struct snd_pcm_substream *substream,
+		     struct vm_area_struct *vma);
+int imx_pcm_new(struct snd_soc_pcm_runtime *rtd);
+void imx_pcm_free(struct snd_pcm *pcm);
+
+#endif /* _IMX_PCM_H */
diff --git a/sound/soc/imx/imx-ssi.c b/sound/soc/imx/imx-ssi.c
index b6adbed6e50..4f81ed45632 100644
--- a/sound/soc/imx/imx-ssi.c
+++ b/sound/soc/imx/imx-ssi.c
@@ -233,6 +233,23 @@ static int imx_ssi_set_dai_clkdiv(struct snd_soc_dai *cpu_dai,
 	return 0;
 }
 
+static int imx_ssi_startup(struct snd_pcm_substream *substream,
+			   struct snd_soc_dai *cpu_dai)
+{
+	struct imx_ssi *ssi = snd_soc_dai_get_drvdata(cpu_dai);
+	struct imx_pcm_dma_params *dma_data;
+
+	/* Tx/Rx config */
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		dma_data = &ssi->dma_params_tx;
+	else
+		dma_data = &ssi->dma_params_rx;
+
+	snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
+
+	return 0;
+}
+
 /*