--- /dev/null
+/*
+ * imx-wm8962.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 <linux/clk.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/wm8962.h"
+
+struct imx_priv {
+ int sysclk; /*mclk from the outside*/
+ int codec_sysclk;
+ int dai_hifi;
+ struct platform_device *pdev;
+};
+
+static struct imx_priv card_priv;
+static struct snd_soc_card snd_soc_card_imx;
+struct clk *wm8962_mclk;
+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)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+
+ if (!codec_dai->active)
+ clk_enable(wm8962_mclk);
+
+ return 0;
+}
+
+static void imx_hifi_shutdown(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+
+ if (!codec_dai->active)
+ clk_disable(wm8962_mclk);
+
+ 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);
+ unsigned int sample_rate = 44100;
+ int ret = 0;
+ u32 dai_format;
+
+ 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;
+
+ sample_rate = params_rate(params);
+
+ ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL_INT,
+ WM8962_FLL_MCLK, priv->sysclk,
+ sample_rate * 768);
+ if (ret < 0)
+ pr_err("Failed to start FLL: %d\n", ret);
+
+ ret = snd_soc_dai_set_sysclk(codec_dai,
+ WM8962_SYSCLK_FLL,
+ sample_rate * 768,
+ SND_SOC_CLOCK_IN);
+ if (ret < 0) {
+ pr_err("Failed to set SYSCLK: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct snd_kcontrol_new controls[] = {
+ SOC_DAPM_PIN_SWITCH("Main Speaker"),
+ SOC_DAPM_PIN_SWITCH("DMIC"),
+};
+
+/* imx card dapm widgets */
+static const struct snd_soc_dapm_widget imx_dapm_widgets[] = {
+ SND_SOC_DAPM_HP("Headphone Jack", NULL),
+
+ SND_SOC_DAPM_MIC("AMIC", NULL),
+
+ SND_SOC_DAPM_SPK("Ext Spk", NULL),
+};
+
+/* imx machine connections to the codec pins */
+static const struct snd_soc_dapm_route audio_map[] = {
+ { "Headphone Jack", NULL, "HPOUTL" },
+ { "Headphone Jack", NULL, "HPOUTR" },
+
+ { "Ext Spk", NULL, "SPKOUTL" },
+ { "Ext Spk", NULL, "SPKOUTR" },
+
+ { "MICBIAS", NULL, "AMIC" },
+ { "IN3R", NULL, "MICBIAS" },
+
+};
+
+static int imx_wm8962_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, "Headphone Jack");
+ snd_soc_dapm_enable_pin(&codec->dapm, "AMIC");
+
+ 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 = "wm8962",
+ .codec_name = "wm8962.0-001a",
+ .cpu_dai_name = "imx-ssi.1",
+ .platform_name = "imx-pcm-audio.1",
+ .init = imx_wm8962_init,
+ .ops = &imx_hifi_ops,
+ },
+};
+
+static struct snd_soc_card snd_soc_card_imx = {
+ .name = "wm8962-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_wm8962_probe(struct platform_device *pdev)
+{
+
+ struct mxc_audio_platform_data *plat = pdev->dev.platform_data;
+ struct imx_priv *priv = &card_priv;
+ int ret = 0;
+
+ wm8962_mclk = clk_get(NULL, "clko_clk");
+ if (IS_ERR(wm8962_mclk)) {
+ printk(KERN_ERR "can't get CLKO clock.\n");
+ return PTR_ERR(wm8962_mclk);
+ }
+
+ priv->pdev = pdev;
+
+ 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_wm8962_remove(struct platform_device *pdev)
+{
+ struct mxc_audio_platform_data *plat = pdev->dev.platform_data;
+
+ if (plat->finit)
+ plat->finit();
+
+ clk_disable(wm8962_mclk);
+ clk_put(wm8962_mclk);
+
+ return 0;
+}
+
+static struct platform_driver imx_wm8962_driver = {
+ .probe = imx_wm8962_probe,
+ .remove = imx_wm8962_remove,
+ .driver = {
+ .name = "imx-wm8962",
+ .owner = THIS_MODULE,
+ },
+};
+
+static struct platform_device *imx_snd_device;
+
+static int __init imx_asoc_init(void)
+{
+ int ret;
+
+ ret = platform_driver_register(&imx_wm8962_driver);
+ if (ret < 0)
+ goto exit;
+
+ imx_snd_device = platform_device_alloc("soc-audio", 5);
+ 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_wm8962_driver);
+exit:
+ return ret;
+}
+
+static void __exit imx_asoc_exit(void)
+{
+ platform_driver_unregister(&imx_wm8962_driver);
+ platform_device_unregister(imx_snd_device);
+}
+
+module_init(imx_asoc_init);
+module_exit(imx_asoc_exit);
+
+/* Module information */
+MODULE_DESCRIPTION("ALSA SoC imx wm8962");
+MODULE_LICENSE("GPL");
projects / karo-tx-linux.git / commitdiff