ralink: add 3.18 support

keep default as 3.14, mt7621 gic need to be ported to 3.18

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 44349

1 files changed, 766 insertions, 0 deletions

diff --git a/target/linux/ramips/patches-3.18/0055-asoc-add-mt7620-support.patch b/target/linux/ramips/patches-3.18/0055-asoc-add-mt7620-support.patch
new file mode 100644
index 0000000000..b439b9d3b8
--- /dev/null
+++ b/target/linux/ramips/patches-3.18/0055-asoc-add-mt7620-support.patch
@@ -0,0 +1,766 @@
+From 241188942603dc73f62cf2553c53cae2235c9957 Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Sun, 27 Jul 2014 09:31:47 +0100
+Subject: [PATCH 55/57] asoc: add mt7620 support
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+---
+ arch/mips/ralink/of.c            |    2 +
+ sound/soc/Kconfig                |    1 +
+ sound/soc/Makefile               |    1 +
+ sound/soc/ralink/Kconfig         |   15 ++
+ sound/soc/ralink/Makefile        |   11 +
+ sound/soc/ralink/mt7620-i2s.c    |  466 ++++++++++++++++++++++++++++++++++++++
+ sound/soc/ralink/mt7620-wm8960.c |  125 ++++++++++
+ sound/soc/soc-io.c               |   10 -
+ 8 files changed, 621 insertions(+), 10 deletions(-)
+ create mode 100644 sound/soc/ralink/Kconfig
+ create mode 100644 sound/soc/ralink/Makefile
+ create mode 100644 sound/soc/ralink/mt7620-i2s.c
+ create mode 100644 sound/soc/ralink/mt7620-wm8960.c
+
+--- a/arch/mips/ralink/of.c
++++ b/arch/mips/ralink/of.c
+@@ -15,6 +15,7 @@
+ #include <linux/of_fdt.h>
+ #include <linux/kernel.h>
+ #include <linux/bootmem.h>
++#include <linux/module.h>
+ #include <linux/of_platform.h>
+ #include <linux/of_address.h>
+ 
+@@ -26,6 +27,7 @@
+ #include "common.h"
+ 
+ __iomem void *rt_sysc_membase;
++EXPORT_SYMBOL(rt_sysc_membase);
+ __iomem void *rt_memc_membase;
+ 
+ __iomem void *plat_of_remap_node(const char *node)
+--- a/sound/soc/Kconfig
++++ b/sound/soc/Kconfig
+@@ -48,6 +48,7 @@ source "sound/soc/intel/Kconfig"
+ source "sound/soc/mxs/Kconfig"
+ source "sound/soc/pxa/Kconfig"
+ source "sound/soc/rockchip/Kconfig"
++source "sound/soc/ralink/Kconfig"
+ source "sound/soc/samsung/Kconfig"
+ source "sound/soc/sh/Kconfig"
+ source "sound/soc/sirf/Kconfig"
+--- a/sound/soc/Makefile
++++ b/sound/soc/Makefile
+@@ -25,6 +25,7 @@ obj-$(CONFIG_SND_SOC)	+= omap/
+ obj-$(CONFIG_SND_SOC)	+= kirkwood/
+ obj-$(CONFIG_SND_SOC)	+= pxa/
+ obj-$(CONFIG_SND_SOC)	+= rockchip/
++obj-$(CONFIG_SND_SOC)	+= ralink/
+ obj-$(CONFIG_SND_SOC)	+= samsung/
+ obj-$(CONFIG_SND_SOC)	+= sh/
+ obj-$(CONFIG_SND_SOC)	+= sirf/
+--- /dev/null
++++ b/sound/soc/ralink/Kconfig
+@@ -0,0 +1,15 @@
++config SND_MT7620_SOC_I2S
++	depends on SOC_MT7620 && SND_SOC
++	select SND_SOC_GENERIC_DMAENGINE_PCM
++	tristate "SoC Audio (I2S protocol) for Ralink MT7620 SoC"
++	help
++	  Say Y if you want to use I2S protocol and I2S codec on Ingenic MT7620
++	  based boards.
++
++config SND_MT7620_SOC_WM8960
++	tristate "SoC Audio support for Ralink WM8960"
++	select SND_MT7620_SOC_I2S
++	select SND_SOC_WM8960
++	help
++	  Say Y if you want to add support for ASoC audio on the Qi LB60 board
++	  a.k.a Qi Ben NanoNote.
+--- /dev/null
++++ b/sound/soc/ralink/Makefile
+@@ -0,0 +1,11 @@
++#
++# Jz4740 Platform Support
++#
++snd-soc-mt7620-i2s-objs := mt7620-i2s.o
++
++obj-$(CONFIG_SND_MT7620_SOC_I2S) += snd-soc-mt7620-i2s.o
++
++# Jz4740 Machine Support
++snd-soc-mt7620-wm8960-objs := mt7620-wm8960.o
++
++obj-$(CONFIG_SND_MT7620_SOC_WM8960) += snd-soc-mt7620-wm8960.o
+--- /dev/null
++++ b/sound/soc/ralink/mt7620-i2s.c
+@@ -0,0 +1,436 @@
++/*
++ *  Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.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.
++ *
++ *  You should have received a copy of the GNU General Public License along
++ *  with this program; if not, write to the Free Software Foundation, Inc.,
++ *  675 Mass Ave, Cambridge, MA 02139, USA.
++ *
++ */
++
++#include <linux/init.h>
++#include <linux/io.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/slab.h>
++
++#include <linux/delay.h>
++
++#include <linux/dma-mapping.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/initval.h>
++#include <sound/dmaengine_pcm.h>
++
++#include <ralink_regs.h>
++
++#define I2S_REG_CFG0		0x00
++#define I2S_REG_CFG0_EN		BIT(31)
++#define I2S_REG_CFG0_DMA_EN	BIT(30)
++#define I2S_REG_CFG0_BYTE_SWAP	BIT(28)
++#define I2S_REG_CFG0_TX_EN	BIT(24)
++#define I2S_REG_CFG0_RX_EN	BIT(20)
++#define I2S_REG_CFG0_SLAVE	BIT(16)
++#define I2S_REG_CFG0_RX_THRES	12
++#define I2S_REG_CFG0_TX_THRES	4
++#define I2S_REG_CFG0_DFT_THRES	(4 << I2S_REG_CFG0_RX_THRES) | \
++					(4 << I2S_REG_CFG0_TX_THRES)
++
++#define I2S_REG_INT_STATUS	0x04
++#define I2S_REG_INT_EN		0x08
++#define I2S_REG_FF_STATUS	0x0c
++#define I2S_REG_WREG		0x10
++#define I2S_REG_RREG		0x14
++#define I2S_REG_CFG1		0x18
++
++#define I2S_REG_DIVCMP		0x20
++#define I2S_REG_DIVINT		0x24
++#define I2S_REG_CLK_EN		BIT(31)
++
++struct mt7620_i2s {
++	struct resource *mem;
++	void __iomem *base;
++	dma_addr_t phys_base;
++
++	struct snd_dmaengine_dai_dma_data playback_dma_data;
++	struct snd_dmaengine_dai_dma_data capture_dma_data;
++};
++
++static inline uint32_t mt7620_i2s_read(const struct mt7620_i2s *i2s,
++	unsigned int reg)
++{
++	return readl(i2s->base + reg);
++}
++
++static inline void mt7620_i2s_write(const struct mt7620_i2s *i2s,
++	unsigned int reg, uint32_t value)
++{
++	//printk("i2s --> %p = 0x%08X\n", i2s->base + reg, value);
++	writel(value, i2s->base + reg);
++}
++
++static int mt7620_i2s_startup(struct snd_pcm_substream *substream,
++	struct snd_soc_dai *dai)
++{
++	struct mt7620_i2s *i2s = snd_soc_dai_get_drvdata(dai);
++	uint32_t cfg;
++
++	if (dai->active)
++		return 0;
++
++	cfg = mt7620_i2s_read(i2s, I2S_REG_CFG0);
++	cfg |= I2S_REG_CFG0_EN;
++	mt7620_i2s_write(i2s, I2S_REG_CFG0, cfg);
++
++	return 0;
++}
++
++static void mt7620_i2s_shutdown(struct snd_pcm_substream *substream,
++	struct snd_soc_dai *dai)
++{
++	struct mt7620_i2s *i2s = snd_soc_dai_get_drvdata(dai);
++	uint32_t cfg;
++
++	if (dai->active)
++		return;
++
++	cfg = mt7620_i2s_read(i2s, I2S_REG_CFG0);
++	cfg &= ~I2S_REG_CFG0_EN;
++	mt7620_i2s_write(i2s, I2S_REG_CFG0, cfg);
++}
++
++static int mt7620_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
++	struct snd_soc_dai *dai)
++{
++	struct mt7620_i2s *i2s = snd_soc_dai_get_drvdata(dai);
++
++	uint32_t cfg;
++	uint32_t mask;
++
++	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
++		mask = I2S_REG_CFG0_TX_EN;
++	else
++		mask = I2S_REG_CFG0_RX_EN;
++
++	cfg = mt7620_i2s_read(i2s, I2S_REG_CFG0);
++
++	switch (cmd) {
++	case SNDRV_PCM_TRIGGER_START:
++	case SNDRV_PCM_TRIGGER_RESUME:
++	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
++		cfg |= mask;
++		break;
++	case SNDRV_PCM_TRIGGER_STOP:
++	case SNDRV_PCM_TRIGGER_SUSPEND:
++	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
++		cfg &= ~mask;
++		break;
++	default:
++		return -EINVAL;
++	}
++
++	if (cfg & (I2S_REG_CFG0_TX_EN | I2S_REG_CFG0_RX_EN))
++		cfg |= I2S_REG_CFG0_DMA_EN;
++	else
++		cfg &= ~I2S_REG_CFG0_DMA_EN;
++
++	mt7620_i2s_write(i2s, I2S_REG_CFG0, cfg);
++
++	return 0;
++}
++
++static int mt7620_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
++{
++	struct mt7620_i2s *i2s = snd_soc_dai_get_drvdata(dai);
++	uint32_t cfg;
++
++	cfg = mt7620_i2s_read(i2s, I2S_REG_CFG0);
++
++	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
++	case SND_SOC_DAIFMT_CBS_CFS:
++		cfg |= I2S_REG_CFG0_SLAVE;
++		break;
++	case SND_SOC_DAIFMT_CBM_CFM:
++		cfg &= ~I2S_REG_CFG0_SLAVE;
++		break;
++	case SND_SOC_DAIFMT_CBM_CFS:
++	default:
++		return -EINVAL;
++	}
++
++	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
++	case SND_SOC_DAIFMT_I2S:
++	case SND_SOC_DAIFMT_MSB:
++		cfg &= ~I2S_REG_CFG0_BYTE_SWAP;
++		break;
++	case SND_SOC_DAIFMT_LSB:
++		cfg |= I2S_REG_CFG0_BYTE_SWAP;
++		break;
++	default:
++		return -EINVAL;
++	}
++
++	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
++	case SND_SOC_DAIFMT_NB_NF:
++		break;
++	default:
++		return -EINVAL;
++	}
++
++	mt7620_i2s_write(i2s, I2S_REG_CFG0, cfg);
++
++	return 0;
++}
++
++static int mt7620_i2s_hw_params(struct snd_pcm_substream *substream,
++	struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
++{
++
++	return 0;
++}
++
++unsigned long i2sMaster_inclk_int[11] = {
++	78,     56,     52,     39,     28,     26,     19,     14,     13,     9,      6};
++unsigned long i2sMaster_inclk_comp[11] = {
++	64,     352,    42,     32,     176,    21,     272,    88,     10,     455,    261};
++
++
++static int mt7620_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id,
++	unsigned int freq, int dir)
++{
++        struct mt7620_i2s *i2s = snd_soc_dai_get_drvdata(dai);
++
++	printk("Internal REFCLK with fractional division\n");
++
++	mt7620_i2s_write(i2s, I2S_REG_DIVINT, i2sMaster_inclk_int[7]);
++	mt7620_i2s_write(i2s, I2S_REG_DIVCMP,
++		i2sMaster_inclk_comp[7] | I2S_REG_CLK_EN);
++
++/*	struct mt7620_i2s *i2s = snd_soc_dai_get_drvdata(dai);
++	struct clk *parent;
++	int ret = 0;
++
++	switch (clk_id) {
++	case JZ4740_I2S_CLKSRC_EXT:
++		parent = clk_get(NULL, "ext");
++		clk_set_parent(i2s->clk_i2s, parent);
++		break;
++	case JZ4740_I2S_CLKSRC_PLL:
++		parent = clk_get(NULL, "pll half");
++		clk_set_parent(i2s->clk_i2s, parent);
++		ret = clk_set_rate(i2s->clk_i2s, freq);
++		break;
++	default:
++		return -EINVAL;
++	}
++	clk_put(parent);
++
++	return ret;*/
++	return 0;
++}
++
++static void mt7620_i2c_init_pcm_config(struct mt7620_i2s *i2s)
++{
++	struct snd_dmaengine_dai_dma_data *dma_data;
++
++	/* Playback */
++	dma_data = &i2s->playback_dma_data;
++	dma_data->maxburst = 16;
++	dma_data->slave_id = 2; //JZ4740_DMA_TYPE_AIC_TRANSMIT;
++	dma_data->addr = i2s->phys_base + I2S_REG_WREG;
++
++	/* Capture */
++	dma_data = &i2s->capture_dma_data;
++	dma_data->maxburst = 16;
++	dma_data->slave_id = 3; //JZ4740_DMA_TYPE_AIC_RECEIVE;
++	dma_data->addr = i2s->phys_base + I2S_REG_RREG;
++}
++
++static int mt7620_i2s_dai_probe(struct snd_soc_dai *dai)
++{
++	struct mt7620_i2s *i2s = snd_soc_dai_get_drvdata(dai);
++	uint32_t data;
++
++	mt7620_i2c_init_pcm_config(i2s);
++	dai->playback_dma_data = &i2s->playback_dma_data;
++	dai->capture_dma_data = &i2s->capture_dma_data;
++
++	/* set share pins to i2s/gpio mode and i2c mode */
++	data = rt_sysc_r32(0x60);
++	data &= 0xFFFFFFE2;
++	data |= 0x00000018;
++	rt_sysc_w32(data, 0x60);
++
++	printk("Internal REFCLK with fractional division\n");
++
++	mt7620_i2s_write(i2s, I2S_REG_CFG0, I2S_REG_CFG0_DFT_THRES);
++	mt7620_i2s_write(i2s, I2S_REG_CFG1, 0);
++	mt7620_i2s_write(i2s, I2S_REG_INT_EN, 0);
++
++	mt7620_i2s_write(i2s, I2S_REG_DIVINT, i2sMaster_inclk_int[7]);
++	mt7620_i2s_write(i2s, I2S_REG_DIVCMP,
++		i2sMaster_inclk_comp[7] | I2S_REG_CLK_EN);
++
++	return 0;
++}
++
++static int mt7620_i2s_dai_remove(struct snd_soc_dai *dai)
++{
++	return 0;
++}
++
++static const struct snd_soc_dai_ops mt7620_i2s_dai_ops = {
++	.startup = mt7620_i2s_startup,
++	.shutdown = mt7620_i2s_shutdown,
++	.trigger = mt7620_i2s_trigger,
++	.hw_params = mt7620_i2s_hw_params,
++	.set_fmt = mt7620_i2s_set_fmt,
++	.set_sysclk = mt7620_i2s_set_sysclk,
++};
++
++#define JZ4740_I2S_FMTS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
++			 SNDRV_PCM_FMTBIT_S24_LE)
++
++static struct snd_soc_dai_driver mt7620_i2s_dai = {
++	.probe = mt7620_i2s_dai_probe,
++	.remove = mt7620_i2s_dai_remove,
++	.playback = {
++		.channels_min = 1,
++		.channels_max = 2,
++		.rates = SNDRV_PCM_RATE_8000_48000,
++		.formats = JZ4740_I2S_FMTS,
++	},
++	.capture = {
++		.channels_min = 2,
++		.channels_max = 2,
++		.rates = SNDRV_PCM_RATE_8000_48000,
++		.formats = JZ4740_I2S_FMTS,
++	},
++	.symmetric_rates = 1,
++	.ops = &mt7620_i2s_dai_ops,
++};
++
++static const struct snd_pcm_hardware mt7620_pcm_hardware = {
++	.info = SNDRV_PCM_INFO_MMAP |
++		SNDRV_PCM_INFO_MMAP_VALID |
++		SNDRV_PCM_INFO_INTERLEAVED |
++		SNDRV_PCM_INFO_BLOCK_TRANSFER,
++	.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
++	.period_bytes_min	= PAGE_SIZE,
++	.period_bytes_max	= 64 * 1024,
++	.periods_min		= 2,
++	.periods_max		= 128,
++	.buffer_bytes_max	= 128 * 1024,
++	.fifo_size		= 32,
++};
++
++static const struct snd_dmaengine_pcm_config mt7620_dmaengine_pcm_config = {
++	.prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
++	.pcm_hardware = &mt7620_pcm_hardware,
++	.prealloc_buffer_size = 256 * PAGE_SIZE,
++};
++
++static const struct snd_soc_component_driver mt7620_i2s_component = {
++	.name = "mt7620-i2s",
++};
++
++static int mt7620_i2s_dev_probe(struct platform_device *pdev)
++{
++	struct mt7620_i2s *i2s;
++	int ret;
++
++	snd_dmaengine_pcm_register(&pdev->dev,
++		&mt7620_dmaengine_pcm_config,
++		SND_DMAENGINE_PCM_FLAG_COMPAT);
++
++	i2s = kzalloc(sizeof(*i2s), GFP_KERNEL);
++	if (!i2s)
++		return -ENOMEM;
++
++	i2s->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	if (!i2s->mem) {
++		ret = -ENOENT;
++		goto err_free;
++	}
++
++	i2s->mem = request_mem_region(i2s->mem->start, resource_size(i2s->mem),
++				pdev->name);
++	if (!i2s->mem) {
++		ret = -EBUSY;
++		goto err_free;
++	}
++
++	i2s->base = ioremap_nocache(i2s->mem->start, resource_size(i2s->mem));
++	if (!i2s->base) {
++		ret = -EBUSY;
++		goto err_release_mem_region;
++	}
++
++	i2s->phys_base = i2s->mem->start;
++
++	platform_set_drvdata(pdev, i2s);
++	ret = snd_soc_register_component(&pdev->dev, &mt7620_i2s_component,
++					 &mt7620_i2s_dai, 1);
++
++	if (!ret) {
++		dev_err(&pdev->dev, "loaded\n");
++		return ret;
++	}
++
++	dev_err(&pdev->dev, "Failed to register DAI\n");
++	iounmap(i2s->base);
++
++err_release_mem_region:
++	release_mem_region(i2s->mem->start, resource_size(i2s->mem));
++err_free:
++	kfree(i2s);
++
++	return ret;
++}
++
++static int mt7620_i2s_dev_remove(struct platform_device *pdev)
++{
++	struct mt7620_i2s *i2s = platform_get_drvdata(pdev);
++
++	snd_soc_unregister_component(&pdev->dev);
++
++	iounmap(i2s->base);
++	release_mem_region(i2s->mem->start, resource_size(i2s->mem));
++
++	kfree(i2s);
++
++	snd_dmaengine_pcm_unregister(&pdev->dev);
++
++	return 0;
++}
++
++static const struct of_device_id mt7620_i2s_match[] = {
++	{ .compatible = "ralink,mt7620a-i2s" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, mt7620_i2s_match);
++
++static struct platform_driver mt7620_i2s_driver = {
++	.probe = mt7620_i2s_dev_probe,
++	.remove = mt7620_i2s_dev_remove,
++	.driver = {
++		.name = "mt7620-i2s",
++		.owner = THIS_MODULE,
++		.of_match_table = mt7620_i2s_match,
++	},
++};
++
++module_platform_driver(mt7620_i2s_driver);
++
++MODULE_AUTHOR("Lars-Peter Clausen, <lars@metafoo.de>");
++MODULE_DESCRIPTION("Ingenic JZ4740 SoC I2S driver");
++MODULE_LICENSE("GPL");
++MODULE_ALIAS("platform:mt7620-i2s");
+--- /dev/null
++++ b/sound/soc/ralink/mt7620-wm8960.c
+@@ -0,0 +1,233 @@
++/*
++ * Copyright 2013 Freescale Semiconductor, Inc.
++ *
++ * Based on mt7620-sgtl5000.c
++ * Copyright 2012 Freescale Semiconductor, Inc.
++ * Copyright 2012 Linaro Ltd.
++ *
++ * The code contained herein is licensed under the GNU General Public
++ * License. You may obtain a copy of the GNU General Public License
++ * Version 2 or later at the following locations:
++ *
++ * http://www.opensource.org/licenses/gpl-license.html
++ * http://www.gnu.org/copyleft/gpl.html
++ */
++
++#include <linux/module.h>
++#include <linux/of_platform.h>
++#include <linux/i2c.h>
++#include <linux/slab.h>
++#include <sound/soc.h>
++#include <sound/pcm_params.h>
++#include <sound/soc-dapm.h>
++#include <linux/pinctrl/consumer.h>
++
++#include "../codecs/wm8960.h"
++
++#define DAI_NAME_SIZE	32
++
++struct mt7620_wm8960_data {
++	struct snd_soc_dai_link dai;
++	struct snd_soc_card card;
++	char codec_dai_name[DAI_NAME_SIZE];
++	char platform_name[DAI_NAME_SIZE];
++	unsigned int clk_frequency;
++};
++
++struct mt7620_priv {
++	struct platform_device *pdev;
++};
++static struct mt7620_priv card_priv;
++
++static const struct snd_soc_dapm_widget mt7620_wm8960_dapm_widgets[] = {
++	SND_SOC_DAPM_HP("Headphone Jack", NULL),
++	SND_SOC_DAPM_SPK("Ext Spk", NULL),
++	SND_SOC_DAPM_MIC("AMIC", NULL),
++	SND_SOC_DAPM_MIC("DMIC", NULL),
++};
++
++static int sample_rate = 44100;
++static snd_pcm_format_t sample_format = SNDRV_PCM_FORMAT_S16_LE;
++
++static int mt7620_hifi_hw_params(struct snd_pcm_substream *substream,
++		struct snd_pcm_hw_params *params)
++{
++	sample_rate = params_rate(params);
++	sample_format = params_format(params);
++
++	return 0;
++}
++
++static struct snd_soc_ops mt7620_hifi_ops = {
++	.hw_params = mt7620_hifi_hw_params,
++};
++
++static int mt7620_wm8960_set_bias_level(struct snd_soc_card *card,
++					struct snd_soc_dapm_context *dapm,
++					enum snd_soc_bias_level level)
++{
++	struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
++	struct mt7620_priv *priv = &card_priv;
++	struct mt7620_wm8960_data *data = snd_soc_card_get_drvdata(card);
++	struct device *dev = &priv->pdev->dev;
++	int ret;
++
++	if (dapm->dev != codec_dai->dev)
++		return 0;
++
++	switch (level) {
++	case SND_SOC_BIAS_PREPARE:
++		if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
++		}
++		break;
++
++	case SND_SOC_BIAS_STANDBY:
++		if (dapm->bias_level == SND_SOC_BIAS_PREPARE) {
++			ret = snd_soc_dai_set_sysclk(codec_dai,
++					WM8960_SYSCLK_MCLK, data->clk_frequency,
++					SND_SOC_CLOCK_IN);
++			if (ret < 0) {
++				dev_err(dev,
++					"failed to switch away from FLL: %d\n",
++					ret);
++				return ret;
++			}
++		}
++		break;
++
++	default:
++		break;
++	}
++
++	return 0;
++}
++
++static int mt7620_wm8960_late_probe(struct snd_soc_card *card)
++{
++	struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
++	struct mt7620_priv *priv = &card_priv;
++	struct mt7620_wm8960_data *data = snd_soc_card_get_drvdata(card);
++	struct device *dev = &priv->pdev->dev;
++	int ret;
++
++	ret = snd_soc_dai_set_sysclk(codec_dai, WM8960_SYSCLK_MCLK,
++			data->clk_frequency, SND_SOC_CLOCK_IN);
++	if (ret < 0)
++		dev_err(dev, "failed to set sysclk in %s\n", __func__);
++
++	return ret;
++}
++
++static int mt7620_wm8960_probe(struct platform_device *pdev)
++{
++	struct device_node *i2s_np, *codec_np;
++	struct platform_device *i2s_pdev;
++	struct mt7620_priv *priv = &card_priv;
++	struct i2c_client *codec_dev;
++	struct mt7620_wm8960_data *data;
++	int ret;
++
++	priv->pdev = pdev;
++
++	i2s_np = of_parse_phandle(pdev->dev.of_node, "i2s-controller", 0);
++	codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
++	if (!i2s_np || !codec_np) {
++		dev_err(&pdev->dev, "phandle missing or invalid\n");
++		ret = -EINVAL;
++		goto fail;
++	}
++
++	i2s_pdev = of_find_device_by_node(i2s_np);
++	if (!i2s_pdev) {
++		dev_err(&pdev->dev, "failed to find SSI platform device\n");
++		ret = -EINVAL;
++		goto fail;
++	}
++	codec_dev = of_find_i2c_device_by_node(codec_np);
++	if (!codec_dev || !codec_dev->dev.driver) {
++		dev_err(&pdev->dev, "failed to find codec platform device\n");
++		ret = -EINVAL;
++		goto fail;
++	}
++
++	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
++	if (!data) {
++		ret = -ENOMEM;
++		goto fail;
++	}
++
++	data->clk_frequency = 12000000;
++	data->dai.name = "HiFi";
++	data->dai.stream_name = "HiFi";
++	data->dai.codec_dai_name = "wm8960-hifi";
++	data->dai.codec_of_node = codec_np;
++	data->dai.cpu_dai_name = dev_name(&i2s_pdev->dev);
++	data->dai.platform_of_node = i2s_np;
++	data->dai.ops = &mt7620_hifi_ops;
++	data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++			    SND_SOC_DAIFMT_CBM_CFM;
++
++	data->card.dev = &pdev->dev;
++	ret = snd_soc_of_parse_card_name(&data->card, "model");
++	if (ret)
++		goto fail;
++	ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
++	if (ret)
++		goto fail;
++	data->card.num_links = 1;
++	data->card.dai_link = &data->dai;
++	data->card.dapm_widgets = mt7620_wm8960_dapm_widgets;
++	data->card.num_dapm_widgets = ARRAY_SIZE(mt7620_wm8960_dapm_widgets);
++
++	data->card.late_probe = mt7620_wm8960_late_probe;
++	data->card.set_bias_level = mt7620_wm8960_set_bias_level;
++
++	platform_set_drvdata(pdev, &data->card);
++	snd_soc_card_set_drvdata(&data->card, data);
++
++	ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
++	if (ret) {
++		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
++		goto fail;
++	}
++
++	of_node_put(i2s_np);
++	of_node_put(codec_np);
++
++	return 0;
++fail:
++	if (i2s_np)
++		of_node_put(i2s_np);
++	if (codec_np)
++		of_node_put(codec_np);
++
++	return ret;
++}
++
++static int mt7620_wm8960_remove(struct platform_device *pdev)
++{
++	return 0;
++}
++
++static const struct of_device_id mt7620_wm8960_dt_ids[] = {
++	{ .compatible = "mediatek,mt7620-audio-wm8960", },
++	{ /* sentinel */ }
++};
++MODULE_DEVICE_TABLE(of, mt7620_wm8960_dt_ids);
++
++static struct platform_driver mt7620_wm8960_driver = {
++	.driver = {
++		.name = "mt7620-wm8960",
++		.owner = THIS_MODULE,
++		.pm = &snd_soc_pm_ops,
++		.of_match_table = mt7620_wm8960_dt_ids,
++	},
++	.probe = mt7620_wm8960_probe,
++	.remove = mt7620_wm8960_remove,
++};
++module_platform_driver(mt7620_wm8960_driver);
++
++MODULE_AUTHOR("Freescale Semiconductor, Inc.");
++MODULE_DESCRIPTION("Freescale i.MX WM8962 ASoC machine driver");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS("platform:mt7620-wm8962");