1 files changed, 345 insertions, 0 deletions
diff --git a/sound/soc/imx/imx-wm8958.c b/sound/soc/imx/imx-wm8958.c
new file mode 100755
index 000000000000..aadc51822dc0
--- /dev/null
+++ b/sound/soc/imx/imx-wm8958.c
@@ -0,0 +1,345 @@
+/*
+ * imx-wm8958.c
+ *
+ * Copyright (C) 2012 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+/*
+ * 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/moduleparam.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/bitops.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/err.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <linux/fsl_devices.h>
+#include <linux/slab.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 <sound/jack.h>
+#include <mach/dma.h>
+#include <mach/clock.h>
+#include <mach/audmux.h>
+
+#include "imx-ssi.h"
+#include "../codecs/wm8994.h"
+#include <linux/mfd/wm8994/registers.h>
+
+struct imx_priv {
+	int sysclk;         /*mclk from the outside*/
+	int codec_sysclk;
+	int dai_hifi;
+	struct platform_device *pdev;
+	struct wm8994 *wm8958;
+};
+static struct imx_priv card_priv;
+static struct snd_soc_card snd_soc_card_imx;
+
+static struct snd_soc_jack hs_jack;
+
+/* Headphones jack detection DAPM pins */
+static struct snd_soc_jack_pin hs_jack_pins[] = {
+	{
+		.pin = "Headphone Jack",
+		.mask = SND_JACK_HEADPHONE,
+	},
+};
+
+/* Headphones jack detection gpios */
+static struct snd_soc_jack_gpio hs_jack_gpios[] = {
+	[0] = {
+		/* gpio is set on per-platform basis */
+		.name		= "hp-gpio",
+		.report		= SND_JACK_HEADPHONE,
+		.debounce_time	= 200,
+	},
+};
+
+static int imx_hifi_startup(struct snd_pcm_substream *substream)
+{
+	return 0;
+}
+
+static void imx_hifi_shutdown(struct snd_pcm_substream *substream)
+{
+	return;
+}
+
+static int imx_hifi_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 *cpu_dai = rtd->cpu_dai;
+	struct snd_soc_dai *codec_dai = rtd->codec_dai;
+	struct imx_priv *priv = &card_priv;
+	unsigned int channels = params_channels(params);
+	int ret = 0;
+	unsigned int pll_out;
+	u32 dai_format;
+	/* only need to do this once as capture and playback are sync */
+
+	if (priv->dai_hifi)
+		return 0;
+	priv->dai_hifi = 1;
+
+	dai_format = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+		SND_SOC_DAIFMT_CBM_CFM;
+
+	/* 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,
+				 channels == 1 ? 0xfffffffe : 0xfffffffc,
+				 2, 32);
+
+	/* set cpu DAI configuration */
+	ret = snd_soc_dai_set_fmt(cpu_dai, dai_format);
+	if (ret < 0)
+		return ret;
+
+	if (params_rate(params) == 8000 || params_rate(params) == 11025)
+		pll_out = params_rate(params) * 512;
+	else
+		pll_out = params_rate(params) * 256;
+
+	ret =
+	    snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
+				priv->sysclk, pll_out);
+	if (ret < 0)
+		return ret;
+
+	ret =
+	    snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1, pll_out,
+				   SND_SOC_CLOCK_IN);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+/* imx card dapm widgets */
+static const struct snd_soc_dapm_widget imx_dapm_widgets[] = {
+	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+	SND_SOC_DAPM_MIC("Main Mic", NULL),
+	SND_SOC_DAPM_HP("Headset Phone", NULL),
+	SND_SOC_DAPM_SPK("Ext Spk", NULL),
+};
+
+/* imx machine connections to the codec pins */
+static const struct snd_soc_dapm_route audio_map[] = {
+	/* ----input ------------------- */
+	/* Mic Jack --> MIC_IN (with automatic bias) */
+	{"MICBIAS2", NULL, "Headset Mic"},
+	{"IN1LP", NULL, "MICBIAS2"},
+	{"IN1LN", NULL, "Headset Mic"},
+
+	{"MICBIAS1", NULL, "Main Mic"},
+	{"IN1RP", NULL, "MICBIAS1"},
+	{"IN1RN", NULL, "Main Mic"},
+
+	/* ----output------------------- */
+	/* HP_OUT --> Headphone Jack */
+	{"Headset Phone", NULL, "HPOUT1L"},
+	{"Headset Phone", NULL, "HPOUT1R"},
+
+	/* LINE_OUT --> Ext Speaker */
+	{"Ext Spk", NULL, "SPKOUTLP"},
+	{"Ext Spk", NULL, "SPKOUTLN"},
+	{"Ext Spk", NULL, "SPKOUTRP"},
+	{"Ext Spk", NULL, "SPKOUTRN"},
+
+};
+
+static int imx_wm8958_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_codec *codec = rtd->codec;
+	int ret;
+
+/* Add imx specific widgets */
+	snd_soc_dapm_new_controls(&codec->dapm, imx_dapm_widgets,
+				  ARRAY_SIZE(imx_dapm_widgets));
+
+	/* Set up imx specific audio path audio_map */
+	snd_soc_dapm_add_routes(&codec->dapm, audio_map, ARRAY_SIZE(audio_map));
+
+	snd_soc_dapm_enable_pin(&codec->dapm, "Headset Phone");
+
+	snd_soc_dapm_sync(&codec->dapm);
+
+	if (hs_jack_gpios[0].gpio != -1) {
+		/* Jack detection API stuff */
+		ret = snd_soc_jack_new(codec, "Headphone Jack",
+					   SND_JACK_HEADPHONE, &hs_jack);
+		if (ret)
+			return ret;
+
+		ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
+					hs_jack_pins);
+		if (ret) {
+			printk(KERN_ERR "failed to call  snd_soc_jack_add_pins\n");
+			return ret;
+		}
+
+		ret = snd_soc_jack_add_gpios(&hs_jack,
+				ARRAY_SIZE(hs_jack_gpios), hs_jack_gpios);
+		if (ret)
+			printk(KERN_WARNING "failed to call snd_soc_jack_add_gpios\n");
+	}
+
+	return 0;
+}
+
+static struct snd_soc_ops imx_hifi_ops = {
+	.startup = imx_hifi_startup,
+	.shutdown = imx_hifi_shutdown,
+	.hw_params = imx_hifi_hw_params,
+};
+
+static struct snd_soc_dai_link imx_dai[] = {
+	{
+		.name = "HiFi",
+		.stream_name = "HiFi",
+		.codec_dai_name	= "wm8994-aif1",
+		.codec_name	= "wm8994-codec",
+		.cpu_dai_name	= "imx-ssi.1",
+		.platform_name	= "imx-pcm-audio.1",
+		.init		= imx_wm8958_init,
+		.ops		= &imx_hifi_ops,
+	},
+};
+
+static struct snd_soc_card snd_soc_card_imx = {
+	.name		= "wm8958-audio",
+	.dai_link	= imx_dai,
+	.num_links	= ARRAY_SIZE(imx_dai),
+};
+
+static int imx_audmux_config(int slave, int master)
+{
+	unsigned int ptcr, pdcr;
+	slave = slave - 1;
+	master = master - 1;
+
+	ptcr = MXC_AUDMUX_V2_PTCR_SYN |
+		MXC_AUDMUX_V2_PTCR_TFSDIR |
+		MXC_AUDMUX_V2_PTCR_TFSEL(master) |
+		MXC_AUDMUX_V2_PTCR_TCLKDIR |
+		MXC_AUDMUX_V2_PTCR_TCSEL(master);
+	pdcr = MXC_AUDMUX_V2_PDCR_RXDSEL(master);
+	mxc_audmux_v2_configure_port(slave, ptcr, pdcr);
+
+	ptcr = MXC_AUDMUX_V2_PTCR_SYN;
+	pdcr = MXC_AUDMUX_V2_PDCR_RXDSEL(slave);
+	mxc_audmux_v2_configure_port(master, ptcr, pdcr);
+
+	return 0;
+}
+
+/*
+ * This function will register the snd_soc_pcm_link drivers.
+ */
+static int __devinit imx_wm8958_probe(struct platform_device *pdev)
+{
+
+	struct mxc_audio_platform_data *plat = pdev->dev.platform_data;
+	struct imx_priv *priv = &card_priv;
+	struct wm8994 *wm8958 = plat->priv;
+	int ret = 0;
+
+	priv->pdev = pdev;
+	priv->wm8958 = wm8958;
+
+	imx_audmux_config(plat->src_port, plat->ext_port);
+
+	if (plat->init && plat->init()) {
+		ret = -EINVAL;
+		return ret;
+	}
+
+	priv->sysclk = plat->sysclk;
+	hs_jack_gpios[0].gpio = plat->hp_gpio;
+	hs_jack_gpios[0].invert = plat->hp_active_low;
+
+	return ret;
+}
+
+static int __devexit imx_wm8958_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_wm8958_driver = {
+	.probe = imx_wm8958_probe,
+	.remove = imx_wm8958_remove,
+	.driver = {
+		   .name = "imx-wm8958",
+		   .owner = THIS_MODULE,
+		   },
+};
+
+static struct platform_device *imx_snd_device;
+
+static int __init imx_asoc_init(void)
+{
+	int ret;
+
+	ret = platform_driver_register(&imx_wm8958_driver);
+	if (ret < 0)
+		goto exit;
+
+	imx_snd_device = platform_device_alloc("soc-audio", -1);
+	if (!imx_snd_device)
+		goto err_device_alloc;
+
+	platform_set_drvdata(imx_snd_device, &snd_soc_card_imx);
+
+	ret = platform_device_add(imx_snd_device);
+
+	if (0 == ret)
+		goto exit;
+
+	platform_device_put(imx_snd_device);
+
+err_device_alloc:
+	platform_driver_unregister(&imx_wm8958_driver);
+exit:
+	return ret;
+}
+
+static void __exit imx_asoc_exit(void)
+{
+	platform_driver_unregister(&imx_wm8958_driver);
+	platform_device_unregister(imx_snd_device);
+}
+
+module_init(imx_asoc_init);
+module_exit(imx_asoc_exit);
+
+/* Module information */
+MODULE_DESCRIPTION("ALSA SoC imx wm8958");
+MODULE_LICENSE("GPL");