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freifunkist-firmware/target/linux/ramips/patches-4.3/0048-asoc-add-mt7620-suppor...

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From 7f29222b1731e8182ba94a331531dec18865a1e4 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Sun, 27 Jul 2014 09:31:47 +0100
Subject: [PATCH 48/53] 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 | 436 ++++++++++++++++++++++++++++++++++++++
sound/soc/ralink/mt7620-wm8960.c | 233 ++++++++++++++++++++
7 files changed, 699 insertions(+)
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
diff --git a/arch/mips/ralink/of.c b/arch/mips/ralink/of.c
index da85bbf..371baa5 100644
--- 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)
diff --git a/sound/soc/Kconfig b/sound/soc/Kconfig
index 225bfda..76ce95c 100644
--- a/sound/soc/Kconfig
+++ b/sound/soc/Kconfig
@@ -53,6 +53,7 @@ source "sound/soc/mxs/Kconfig"
source "sound/soc/pxa/Kconfig"
source "sound/soc/qcom/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"
diff --git a/sound/soc/Makefile b/sound/soc/Makefile
index 134aca1..e9d8e0e 100644
--- a/sound/soc/Makefile
+++ b/sound/soc/Makefile
@@ -35,6 +35,7 @@ obj-$(CONFIG_SND_SOC) += kirkwood/
obj-$(CONFIG_SND_SOC) += pxa/
obj-$(CONFIG_SND_SOC) += qcom/
obj-$(CONFIG_SND_SOC) += rockchip/
+obj-$(CONFIG_SND_SOC) += ralink/
obj-$(CONFIG_SND_SOC) += samsung/
obj-$(CONFIG_SND_SOC) += sh/
obj-$(CONFIG_SND_SOC) += sirf/
diff --git a/sound/soc/ralink/Kconfig b/sound/soc/ralink/Kconfig
new file mode 100644
index 0000000..d462622
--- /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.
diff --git a/sound/soc/ralink/Makefile b/sound/soc/ralink/Makefile
new file mode 100644
index 0000000..3d79980
--- /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
diff --git a/sound/soc/ralink/mt7620-i2s.c b/sound/soc/ralink/mt7620-i2s.c
new file mode 100644
index 0000000..2ce9b21
--- /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");
diff --git a/sound/soc/ralink/mt7620-wm8960.c b/sound/soc/ralink/mt7620-wm8960.c
new file mode 100644
index 0000000..3389988
--- /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");
--
1.7.10.4