Add support for WM8753 codec on the CCWMX51

5 files changed, 370 insertions, 0 deletions

diff --git a/arch/arm/mach-mx51/mx51_ccwmx51js.c b/arch/arm/mach-mx51/mx51_ccwmx51js.c
index 108d0ad4a79f..bced747df9a1 100644
--- a/arch/arm/mach-mx51/mx51_ccwmx51js.c
+++ b/arch/arm/mach-mx51/mx51_ccwmx51js.c
@@ -250,6 +250,7 @@ static inline void mxc_init_fb(void)
 
 #ifdef CONFIG_I2C_MXC_SELECT2
 static struct i2c_board_info mxc_i2c1_board_info[] __initdata = {
+	{I2C_BOARD_INFO("wm8753",0x1a)},
 };
 #endif
 
@@ -555,6 +556,27 @@ static void mxc_power_off(void)
 		(PWGT1SPIEN|PWGT2SPIEN));
 }
 
+static struct mxc_audio_platform_data wm8753_data = {
+	.ssi_num = 1,
+	.src_port = 2,
+	.ext_port = 3,
+	.sysclk = 11289600,  // So we can do 44.1 kHz
+};
+
+static struct platform_device mxc_wm8753_device = {
+	.name = "imx-ccwmx51js-wm8753",
+	.dev = {
+		.release = mxc_nop_release,
+		.platform_data = &wm8753_data,
+	},
+};
+
+static void mxc_init_wm8753(void)
+{
+	platform_device_register(&mxc_wm8753_device);
+}
+
+
 /*!
  * Board specific initialization.
  */
@@ -569,6 +591,7 @@ static void __init mxc_board_init(void)
 
 	mxc_init_mmc();
 	mx51_ccwmx51js_init_mc13892();
+	mxc_init_wm8753();
 
 #if defined(CONFIG_MTD) || defined(CONFIG_MTD_MODULE)
 	ccwmx51_init_nand_mtd();
diff --git a/arch/arm/mach-mx51/mx51_ccwmx51js_gpio.c b/arch/arm/mach-mx51/mx51_ccwmx51js_gpio.c
index de7d5f3cc811..6e7ea3e27a2e 100644
--- a/arch/arm/mach-mx51/mx51_ccwmx51js_gpio.c
+++ b/arch/arm/mach-mx51/mx51_ccwmx51js_gpio.c
@@ -53,6 +53,32 @@ static struct mxc_iomux_pin_cfg __initdata mxc_iomux_pins[] = {
 	 (PAD_CTL_HYS_ENABLE | PAD_CTL_PKE_ENABLE | PAD_CTL_DRV_HIGH |
 				  PAD_CTL_SRE_FAST),
 	 },
+#if defined(CONFIG_SND_SOC_IMX_CCWMX51JS) || defined(CONFIG_SND_SOC_IMX_CCWMX51JS_MODULE)
+	{
+		MX51_PIN_AUD3_BB_TXD, IOMUX_CONFIG_ALT0,
+		(PAD_CTL_SRE_FAST | PAD_CTL_DRV_HIGH | PAD_CTL_ODE_OPENDRAIN_NONE |
+		 PAD_CTL_100K_PU | PAD_CTL_HYS_NONE | PAD_CTL_DDR_INPUT_CMOS |
+		 PAD_CTL_DRV_VOT_LOW),
+	},
+	{
+		MX51_PIN_AUD3_BB_RXD, IOMUX_CONFIG_ALT0,
+		(PAD_CTL_SRE_FAST | PAD_CTL_DRV_HIGH | PAD_CTL_ODE_OPENDRAIN_NONE |
+		PAD_CTL_100K_PU | PAD_CTL_HYS_NONE | PAD_CTL_DDR_INPUT_CMOS |
+		PAD_CTL_DRV_VOT_LOW),
+	},
+	{
+		MX51_PIN_AUD3_BB_CK, IOMUX_CONFIG_ALT0,
+		(PAD_CTL_SRE_FAST | PAD_CTL_DRV_HIGH | PAD_CTL_ODE_OPENDRAIN_NONE |
+		PAD_CTL_100K_PU | PAD_CTL_HYS_NONE | PAD_CTL_DDR_INPUT_CMOS |
+		PAD_CTL_DRV_VOT_LOW),
+	},
+	{
+		MX51_PIN_AUD3_BB_FS, IOMUX_CONFIG_ALT0,
+		(PAD_CTL_SRE_FAST | PAD_CTL_DRV_HIGH | PAD_CTL_ODE_OPENDRAIN_NONE |
+		PAD_CTL_100K_PU | PAD_CTL_HYS_NONE | PAD_CTL_DDR_INPUT_CMOS |
+		PAD_CTL_DRV_VOT_LOW),
+	},
+#endif
 #if defined(CONFIG_FB_MXC_SYNC_PANEL) || defined(CONFIG_FB_MXC_SYNC_PANEL_MODULE)
 	{
 		MX51_PIN_DI1_PIN11, IOMUX_CONFIG_ALT4,
diff --git a/sound/soc/imx/Kconfig b/sound/soc/imx/Kconfig
index c642782e1721..72e94b08b432 100644
--- a/sound/soc/imx/Kconfig
+++ b/sound/soc/imx/Kconfig
@@ -40,6 +40,14 @@ config SND_SOC_IMX_3STACK_SGTL5000
    Say Y if you want to add support for SoC audio on IMX 3STACK
    with the SGTL5000.
 
+config SND_SOC_IMX_CCWMX51JS
+ tristate "SoC Audio support for Digi CCWMX51JS"
+ select SND_MXC_SOC_SSI
+ select SND_SOC_WM8753
+ help
+   Say Y if you want to add support for SoC audio on Digi
+   CCWMX51JS with the WM8753 codec.
+
 config SND_SOC_IMX_3STACK_AK4647
  tristate "SoC Audio support for IMX - AK4647"
  select SND_MXC_SOC_SSI
diff --git a/sound/soc/imx/Makefile b/sound/soc/imx/Makefile
index d8cd279eb62b..d0297ba0a066 100644
--- a/sound/soc/imx/Makefile
+++ b/sound/soc/imx/Makefile
@@ -22,3 +22,5 @@ snd-soc-imx-3stack-ak5702-objs := imx-3stack-ak5702.o
 obj-$(CONFIG_SND_SOC_IMX_3STACK_AK5702) += snd-soc-imx-3stack-ak5702.o
 snd-soc-imx-3stack-bt-objs := imx-3stack-bt.o
 obj-$(CONFIG_SND_SOC_IMX_3STACK_BLUETOOTH) += snd-soc-imx-3stack-bt.o
+snd-soc-imx-ccwmx51js-wm8753-objs := imx-ccwmx51js-wm8753.o
+obj-$(CONFIG_SND_SOC_IMX_CCWMX51JS) += snd-soc-imx-ccwmx51js-wm8753.o
diff --git a/sound/soc/imx/imx-ccwmx51js-wm8753.c b/sound/soc/imx/imx-ccwmx51js-wm8753.c
new file mode 100644
index 000000000000..0bcb5aeb1de6
--- /dev/null
+++ b/sound/soc/imx/imx-ccwmx51js-wm8753.c
@@ -0,0 +1,311 @@
+/*
+ * imx-ccwmx51js-wm8753.c  --  Digi CCWMX51JS Driver for Wolfson WM8753 Codec
+ *
+ * Adapted by Timesys from sgtl5000 machine driver and other sources.
+ *
+ * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2010 Timesys Corporation. All Rights Reserved.
+ *
+ *  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.
+ *
+ *  Revision history
+ *    1st April 2010   Initial version.
+ *
+ */
+
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/err.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/initval.h>
+
+#include <mach/dma.h>
+#include <mach/spba.h>
+#include <mach/clock.h>
+
+#include "../codecs/wm8753.h"
+#include "imx-ssi.h"
+#include "imx-pcm.h"
+
+/* SSI BCLK and LRC master */
+#define WM8753_SSI_MASTER	1
+
+struct imx_ccwmx51js_priv {
+	int sysclk;
+	int hw;
+	struct platform_device *pdev;
+};
+
+static struct imx_ccwmx51js_priv card_priv;
+
+static int imx_ccwmx51js_audio_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_link *machine = rtd->dai;
+	struct snd_soc_dai *cpu_dai = machine->cpu_dai;
+	struct snd_soc_dai *codec_dai = machine->codec_dai;
+	struct imx_ccwmx51js_priv *priv = &card_priv;
+	struct imx_ssi *ssi_mode = (struct imx_ssi *)cpu_dai->private_data;
+	int ret = 0;
+
+	unsigned int channels = params_channels(params);
+	u32 dai_format;
+
+	snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, priv->sysclk, 0);
+
+#if WM8753_SSI_MASTER
+	dai_format = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+	    SND_SOC_DAIFMT_CBM_CFM;
+#else
+	dai_format = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+	    SND_SOC_DAIFMT_CBS_CFS;
+#endif
+
+	ssi_mode->sync_mode = 1;
+	if (channels == 1)
+		ssi_mode->network_mode = 0;
+	else
+		ssi_mode->network_mode = 1;
+
+	/* set codec DAI configuration */
+	ret = snd_soc_dai_set_fmt(codec_dai, dai_format);
+	if (ret < 0)
+		return ret;
+
+	/* set i.MX active slot mask */
+	snd_soc_dai_set_tdm_slot(cpu_dai,
+				 channels == 1 ? 0xfffffffe : 0xfffffffc, 2);
+
+	/* set cpu DAI configuration */
+	ret = snd_soc_dai_set_fmt(cpu_dai, dai_format);
+	if (ret < 0)
+		return ret;
+
+	/* set the SSI system clock as input (unused) */
+	snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0, SND_SOC_CLOCK_IN);
+
+	/*  The WM8753 PLL on the Digi CCWMX51JS is referenced to a fixed 13-MHz
+	 *  oscillator.  We presently operate the PLL only at 11.289600
+	 *  MHz output, which supports a 44.1-kHz sample rate and a few others.
+	 *
+	 */
+	/* set codec BCLK division for sample rate */
+	ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, WM8753_BCLK_DIV_4);
+	if (ret < 0)
+		return ret;
+
+	/* Specify input PLL frequency and desired output frequency. */
+	ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 13000000, 11289600);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int imx_ccwmx51js_startup(struct snd_pcm_substream *substream)
+{
+	return 0;
+}
+
+static void imx_ccwmx51js_shutdown(struct snd_pcm_substream *substream)
+{
+	struct imx_ccwmx51js_priv *priv = &card_priv;
+
+	priv->hw = 0;
+}
+
+/*
+ * imx_ccwmx51js wm8576 audio DAI opserations.
+ */
+static struct snd_soc_ops imx_ccwmx51js_ops = {
+	.startup = imx_ccwmx51js_startup,
+	.shutdown = imx_ccwmx51js_shutdown,
+	.hw_params = imx_ccwmx51js_audio_hw_params,
+};
+
+static void imx_ccwmx51js_init_dam(int ssi_port, int dai_port)
+{
+	unsigned int ssi_ptcr = 0;
+	unsigned int dai_ptcr = 0;
+	unsigned int ssi_pdcr = 0;
+	unsigned int dai_pdcr = 0;
+	/* i.MX51 uses SSI1 or SSI2 via AUDMUX port dai_port for audio */
+
+	/* reset port ssi_port & dai_port */
+	__raw_writel(0, DAM_PTCR(ssi_port));
+	__raw_writel(0, DAM_PTCR(dai_port));
+	__raw_writel(0, DAM_PDCR(ssi_port));
+	__raw_writel(0, DAM_PDCR(dai_port));
+
+	/* set to synchronous */
+	ssi_ptcr |= AUDMUX_PTCR_SYN;
+	dai_ptcr |= AUDMUX_PTCR_SYN;
+
+#if WM8753_SSI_MASTER
+	/* set Rx sources ssi_port <--> dai_port */
+	ssi_pdcr |= AUDMUX_PDCR_RXDSEL(dai_port);
+	dai_pdcr |= AUDMUX_PDCR_RXDSEL(ssi_port);
+
+	/* set Tx frame direction and source  dai_port--> ssi_port output */
+	ssi_ptcr |= AUDMUX_PTCR_TFSDIR;
+	ssi_ptcr |= AUDMUX_PTCR_TFSSEL(AUDMUX_FROM_TXFS, dai_port);
+
+	/* set Tx Clock direction and source dai_port--> ssi_port output */
+	ssi_ptcr |= AUDMUX_PTCR_TCLKDIR;
+	ssi_ptcr |= AUDMUX_PTCR_TCSEL(AUDMUX_FROM_TXFS, dai_port);
+#else
+	/* set Rx sources ssi_port <--> dai_port */
+	ssi_pdcr |= AUDMUX_PDCR_RXDSEL(dai_port);
+	dai_pdcr |= AUDMUX_PDCR_RXDSEL(ssi_port);
+
+	/* set Tx frame direction and source  ssi_port --> dai_port output */
+	dai_ptcr |= AUDMUX_PTCR_TFSDIR;
+	dai_ptcr |= AUDMUX_PTCR_TFSSEL(AUDMUX_FROM_TXFS, ssi_port);
+
+	/* set Tx Clock direction and source ssi_port--> dai_port output */
+	dai_ptcr |= AUDMUX_PTCR_TCLKDIR;
+	dai_ptcr |= AUDMUX_PTCR_TCSEL(AUDMUX_FROM_TXFS, ssi_port);
+#endif
+
+	__raw_writel(ssi_ptcr, DAM_PTCR(ssi_port));
+	__raw_writel(dai_ptcr, DAM_PTCR(dai_port));
+	__raw_writel(ssi_pdcr, DAM_PDCR(ssi_port));
+	__raw_writel(dai_pdcr, DAM_PDCR(dai_port));
+}
+
+static int imx_ccwmx51js_wm8753_init(struct snd_soc_codec *codec)
+{
+	snd_soc_dapm_sync(codec);
+
+	return 0;
+}
+
+/* imx_ccwmx51js digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link imx_ccwmx51js_dai = {
+	.name = "wm8753",
+	.stream_name = "wm8753",
+	.codec_dai = &wm8753_dai[WM8753_DAI_HIFI],
+	.init = imx_ccwmx51js_wm8753_init,
+	.ops = &imx_ccwmx51js_ops,
+};
+
+static int imx_ccwmx51js_card_remove(struct platform_device *pdev)
+{
+	struct imx_ccwmx51js_priv *priv = &card_priv;
+	struct mxc_audio_platform_data *plat;
+	if (priv->pdev) {
+		plat = priv->pdev->dev.platform_data;
+		if (plat->finit)
+			plat->finit();
+	}
+
+	return 0;
+}
+
+static struct snd_soc_card snd_soc_card_imx_ccwmx51js = {
+	.name = "imx-ccwmx51js",
+	.platform = &imx_soc_platform,
+	.dai_link = &imx_ccwmx51js_dai,
+	.num_links = 1,
+	.remove = imx_ccwmx51js_card_remove,
+};
+
+static struct snd_soc_device imx_ccwmx51js_snd_devdata = {
+	.card = &snd_soc_card_imx_ccwmx51js,
+	.codec_dev = &soc_codec_dev_wm8753,
+};
+
+static int __devinit imx_ccwmx51js_wm8753_probe(struct platform_device *pdev)
+{
+	struct mxc_audio_platform_data *plat = pdev->dev.platform_data;
+	struct imx_ccwmx51js_priv *priv = &card_priv;
+	struct snd_soc_dai *wm8753_cpu_dai;
+	int ret = 0;
+
+	priv->sysclk = plat->sysclk;
+	priv->pdev = pdev;
+
+	gpio_activate_audio_ports();
+	imx_ccwmx51js_init_dam(plat->src_port, plat->ext_port);
+
+	if (plat->src_port == 2)
+		wm8753_cpu_dai = &imx_ssi_dai[2];
+	else
+		wm8753_cpu_dai = &imx_ssi_dai[0];
+
+	imx_ccwmx51js_dai.cpu_dai = wm8753_cpu_dai;
+
+	ret = -EINVAL;
+	if (plat->init && plat->init())
+		goto err_plat_init;
+
+	return 0;
+
+err_plat_init:
+	return ret;
+}
+
+static int imx_ccwmx51js_wm8753_remove(struct platform_device *pdev)
+{
+	struct mxc_audio_platform_data *plat = pdev->dev.platform_data;
+
+	if (plat->finit)
+		plat->finit();
+
+	return 0;
+}
+
+static struct platform_driver imx_ccwmx51js_wm8753_audio_driver = {
+	.probe = imx_ccwmx51js_wm8753_probe,
+	.remove = imx_ccwmx51js_wm8753_remove,
+	.driver = {
+		   .name = "imx-ccwmx51js-wm8753",
+		   },
+};
+
+static struct platform_device *imx_ccwmx51js_snd_device;
+
+static int __init imx_ccwmx51js_init(void)
+{
+	int ret;
+
+	ret = platform_driver_register(&imx_ccwmx51js_wm8753_audio_driver);
+	if (ret)
+		return -ENOMEM;
+
+	imx_ccwmx51js_snd_device = platform_device_alloc("soc-audio", 2);
+	if (!imx_ccwmx51js_snd_device)
+		return -ENOMEM;
+
+	platform_set_drvdata(imx_ccwmx51js_snd_device, &imx_ccwmx51js_snd_devdata);
+	imx_ccwmx51js_snd_devdata.dev = &imx_ccwmx51js_snd_device->dev;
+	ret = platform_device_add(imx_ccwmx51js_snd_device);
+
+	if (ret)
+		platform_device_put(imx_ccwmx51js_snd_device);
+
+	return ret;
+}
+
+static void __exit imx_ccwmx51js_exit(void)
+{
+	platform_driver_unregister(&imx_ccwmx51js_wm8753_audio_driver);
+	platform_device_unregister(imx_ccwmx51js_snd_device);
+}
+
+module_init(imx_ccwmx51js_init);
+module_exit(imx_ccwmx51js_exit);
+
+MODULE_AUTHOR("Timesys Corporation");
+MODULE_DESCRIPTION("WM8753 Driver for CCWMX51JS");
+MODULE_LICENSE("GPL");