[alsa-devel][PATCH] ASoC: fsl: add imx-wm8960 machine driver
Zidan Wang
zidan.wang at freescale.com
Wed Jun 10 18:26:27 AEST 2015
This imx-wm8960 device-tree-only machine driver works with sai driver
and have below feature.
* support codec master and slave mode
* support headphone jack detect
* support headphone and micphone jack event
* support asrc<->sai<->wm8960 mode
Signed-off-by: Zidan Wang <zidan.wang at freescale.com>
---
.../devicetree/bindings/sound/imx-audio-wm8960.txt | 68 ++
sound/soc/fsl/Kconfig | 13 +
sound/soc/fsl/Makefile | 2 +
sound/soc/fsl/imx-wm8960.c | 711 +++++++++++++++++++++
4 files changed, 794 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/imx-audio-wm8960.txt
create mode 100644 sound/soc/fsl/imx-wm8960.c
diff --git a/Documentation/devicetree/bindings/sound/imx-audio-wm8960.txt b/Documentation/devicetree/bindings/sound/imx-audio-wm8960.txt
new file mode 100644
index 0000000..300d027
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/imx-audio-wm8960.txt
@@ -0,0 +1,68 @@
+Freescale i.MX audio complex with WM8960 codec
+
+Required properties:
+
+ - compatible : "fsl,imx-audio-wm8960"
+
+ - model : The user-visible name of this sound complex
+
+ - audio-codec : The phandle of the WM8960 audio codec
+
+ - hp-det : ADCLRC/GPIO1, LINPUT3/JD2 and RINPUT3/JD3 pins can
+ be selected as headphone jack detect inputs to
+ automatically disable the speaker output and enable
+ the headphone output.
+ hp-det = <hp-det-pin hp-det-polarity>;
+ hp-det-pin = 1: ADCLRC/GPIO1 used as detect pin
+ hp-det-pin = 2: LINPUT3/JD2 used as detect pin
+ hp-det-pin = 3: RINPUT3/JD3 used as detect pin
+ hp-det-polarity = 0: hp detect high for headphone
+ hp-det-polarity = 1: hp detect high for speaker
+
+ - codec-master : If "codec-master" present, codec works as master.
+ Otherwise, codec works as slave.
+
+ - audio-routing : A list of the connections between audio components.
+ Each entry is a pair of strings, the first being the
+ connection's sink, the second being the connection's
+ source. Valid names could be power supplies, WM8962
+ pins, and the jacks on the board:
+
+ Power supplies:
+ * MICB
+
+ Board connectors:
+ * Hp MIC
+ * Main MIC
+ * Headset Jack
+ * Ext Spk
+
+Example:
+
+sound {
+ compatible = "fsl,imx6ul-evk-wm8960",
+ "fsl,imx-audio-wm8960";
+ model = "wm8960-audio";
+ cpu-dai = <&sai2>;
+ audio-codec = <&codec>;
+ asrc-controller = <&asrc>;
+ codec-master;
+ hp-det = <3 0>;
+ audio-routing =
+ "Headset Jack", "HP_L",
+ "Headset Jack", "HP_R",
+ "Ext Spk", "SPK_LP",
+ "Ext Spk", "SPK_LN",
+ "Ext Spk", "SPK_RP",
+ "Ext Spk", "SPK_RN",
+ "LINPUT2", "Hp MIC",
+ "LINPUT3", "Hp MIC",
+ "RINPUT1", "Main MIC",
+ "RINPUT2", "Main MIC",
+ "Hp MIC", "MICB",
+ "Main MIC", "MICB",
+ "CPU-Playback", "ASRC-Playback",
+ "Playback", "CPU-Playback",
+ "ASRC-Capture", "CPU-Capture",
+ "CPU-Capture", "Capture";
+};
diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig
index 19c302b..0d9aa56 100644
--- a/sound/soc/fsl/Kconfig
+++ b/sound/soc/fsl/Kconfig
@@ -229,6 +229,19 @@ config SND_SOC_EUKREA_TLV320
Enable I2S based access to the TLV320AIC23B codec attached
to the SSI interface
+config SND_SOC_IMX_WM8960
+ tristate "SoC Audio support for i.MX boards with wm8960"
+ depends on OF && I2C
+ select SND_SOC_WM8960
+ select SND_SOC_IMX_PCM_DMA
+ select SND_SOC_FSL_SAI
+ select SND_SOC_FSL_UTILS
+ select SND_KCTL_JACK
+ help
+ SoC Audio support for i.MX boards with WM8960
+ Say Y if you want to add support for SoC audio on an i.MX board with
+ a wm8960 codec.
+
config SND_SOC_IMX_WM8962
tristate "SoC Audio support for i.MX boards with wm8962"
depends on OF && I2C && INPUT
diff --git a/sound/soc/fsl/Makefile b/sound/soc/fsl/Makefile
index d28dc25..84a9a10 100644
--- a/sound/soc/fsl/Makefile
+++ b/sound/soc/fsl/Makefile
@@ -54,6 +54,7 @@ snd-soc-mx27vis-aic32x4-objs := mx27vis-aic32x4.o
snd-soc-wm1133-ev1-objs := wm1133-ev1.o
snd-soc-imx-es8328-objs := imx-es8328.o
snd-soc-imx-sgtl5000-objs := imx-sgtl5000.o
+snd-soc-imx-wm8960-objs := imx-wm8960.o
snd-soc-imx-wm8962-objs := imx-wm8962.o
snd-soc-imx-spdif-objs := imx-spdif.o
snd-soc-imx-mc13783-objs := imx-mc13783.o
@@ -64,6 +65,7 @@ obj-$(CONFIG_SND_SOC_MX27VIS_AIC32X4) += snd-soc-mx27vis-aic32x4.o
obj-$(CONFIG_SND_MXC_SOC_WM1133_EV1) += snd-soc-wm1133-ev1.o
obj-$(CONFIG_SND_SOC_IMX_ES8328) += snd-soc-imx-es8328.o
obj-$(CONFIG_SND_SOC_IMX_SGTL5000) += snd-soc-imx-sgtl5000.o
+obj-$(CONFIG_SND_SOC_IMX_WM8960) += snd-soc-imx-wm8960.o
obj-$(CONFIG_SND_SOC_IMX_WM8962) += snd-soc-imx-wm8962.o
obj-$(CONFIG_SND_SOC_IMX_SPDIF) += snd-soc-imx-spdif.o
obj-$(CONFIG_SND_SOC_IMX_MC13783) += snd-soc-imx-mc13783.o
diff --git a/sound/soc/fsl/imx-wm8960.c b/sound/soc/fsl/imx-wm8960.c
new file mode 100644
index 0000000..ddd17cb
--- /dev/null
+++ b/sound/soc/fsl/imx-wm8960.c
@@ -0,0 +1,711 @@
+/*
+ * Copyright (C) 2015 Freescale Semiconductor, Inc.
+ *
+ * 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/of_gpio.h>
+#include <linux/slab.h>
+#include <linux/gpio.h>
+#include <linux/clk.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+#include <sound/control.h>
+#include <sound/pcm_params.h>
+#include <sound/soc-dapm.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/mfd/syscon.h>
+#include "../codecs/wm8960.h"
+
+#define DAI_NAME_SIZE 32
+
+struct imx_wm8960_data {
+ struct snd_soc_card card;
+ char codec_dai_name[DAI_NAME_SIZE];
+ char platform_name[DAI_NAME_SIZE];
+ struct clk *codec_clk;
+ unsigned int clk_frequency;
+ bool is_codec_master;
+ bool is_stream_in_use[2];
+ struct regmap *gpr;
+ unsigned int hp_det[2];
+ u32 asrc_rate;
+ u32 asrc_format;
+};
+
+struct imx_priv {
+ int hp_set_gpio;
+ int hp_active_low;
+ struct snd_kcontrol *headset_kctl;
+ struct snd_soc_codec *codec;
+ struct platform_device *pdev;
+ struct platform_device *asrc_pdev;
+ struct snd_card *snd_card;
+};
+
+static struct imx_priv card_priv;
+
+static struct snd_soc_jack imx_hp_set;
+static struct snd_soc_jack_pin imx_hp_set_pins[] = {
+ {
+ .pin = "Headset Jack",
+ .mask = SND_JACK_HEADSET,
+ },
+};
+static struct snd_soc_jack_gpio imx_hp_set_gpio = {
+ .name = "headset detect",
+ .report = SND_JACK_HEADSET,
+ .debounce_time = 250,
+ .invert = 1,
+};
+
+static int hp_set_status_check(void *data)
+{
+ struct imx_priv *priv = &card_priv;
+ struct platform_device *pdev = priv->pdev;
+ char *envp[3], *buf;
+ int hp_status, ret;
+
+ if (!gpio_is_valid(priv->hp_set_gpio))
+ return 0;
+
+ hp_status = gpio_get_value(priv->hp_set_gpio) ? 1 : 0;
+ buf = kmalloc(32, GFP_ATOMIC);
+ if (!buf) {
+ dev_err(&pdev->dev, "%s kmalloc failed\n", __func__);
+ return -ENOMEM;
+ }
+
+ if (hp_status != priv->hp_active_low) {
+ snprintf(buf, 32, "STATE=%d", 2);
+ snd_soc_dapm_disable_pin(&priv->codec->dapm, "Ext Spk");
+ snd_soc_dapm_disable_pin(&priv->codec->dapm, "Main MIC");
+ ret = imx_hp_set_gpio.report;
+
+ /*
+ * As the hp MIC only connect the input for left channel, we
+ * need to route it for right channel.
+ */
+ snd_soc_update_bits(priv->codec, WM8960_ADDCTL1, 3<<2, 1<<2);
+
+ snd_kctl_jack_report(priv->snd_card, priv->headset_kctl, 1);
+ } else {
+ snprintf(buf, 32, "STATE=%d", 0);
+ snd_soc_dapm_enable_pin(&priv->codec->dapm, "Ext Spk");
+ snd_soc_dapm_enable_pin(&priv->codec->dapm, "Main MIC");
+ ret = 0;
+
+ /*
+ * As the Main MIC only connect the input for right channel,
+ * we need to route it for left channel.
+ */
+ snd_soc_update_bits(priv->codec, WM8960_ADDCTL1, 3<<2, 2<<2);
+
+ snd_kctl_jack_report(priv->snd_card, priv->headset_kctl, 0);
+ }
+
+ envp[0] = "NAME=headset";
+ envp[1] = buf;
+ envp[2] = NULL;
+ kobject_uevent_env(&pdev->dev.kobj, KOBJ_CHANGE, envp);
+ kfree(buf);
+
+ return ret;
+}
+
+static const struct snd_soc_dapm_widget imx_wm8960_dapm_widgets[] = {
+ SND_SOC_DAPM_HP("Headset Jack", NULL),
+ SND_SOC_DAPM_SPK("Ext Spk", NULL),
+ SND_SOC_DAPM_MIC("Hp MIC", NULL),
+ SND_SOC_DAPM_MIC("Main MIC", NULL),
+};
+
+static int imx_wm8960_gpio_init(struct snd_soc_card *card)
+{
+ struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
+ struct snd_soc_codec *codec = codec_dai->codec;
+ struct imx_priv *priv = &card_priv;
+ int ret;
+
+ priv->codec = codec;
+
+ if (gpio_is_valid(priv->hp_set_gpio)) {
+ imx_hp_set_gpio.gpio = priv->hp_set_gpio;
+ imx_hp_set_gpio.jack_status_check = hp_set_status_check;
+
+ ret = snd_soc_card_jack_new(card, "Headset Jack",
+ SND_JACK_HEADSET, &imx_hp_set,
+ imx_hp_set_pins, ARRAY_SIZE(imx_hp_set_pins));
+ if (ret)
+ return ret;
+ ret = snd_soc_jack_add_gpios(&imx_hp_set, 1,
+ &imx_hp_set_gpio);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static ssize_t show_headphone(struct device_driver *dev, char *buf)
+{
+ struct imx_priv *priv = &card_priv;
+ int hp_status;
+
+ if (!gpio_is_valid(priv->hp_set_gpio)) {
+ strcpy(buf, "no detect gpio connected\n");
+ return strlen(buf);
+ }
+
+ /* Check if headphone is plugged in */
+ hp_status = gpio_get_value(priv->hp_set_gpio) ? 1 : 0;
+
+ if (hp_status != priv->hp_active_low)
+ strcpy(buf, "Headphone\n");
+ else
+ strcpy(buf, "Speaker\n");
+
+ return strlen(buf);
+}
+
+static ssize_t show_micphone(struct device_driver *dev, char *buf)
+{
+ struct imx_priv *priv = &card_priv;
+ int hp_status;
+
+ if (!gpio_is_valid(priv->hp_set_gpio)) {
+ strcpy(buf, "no detect gpio connected\n");
+ return strlen(buf);
+ }
+
+ /* Check if headphone is plugged in */
+ hp_status = gpio_get_value(priv->hp_set_gpio) ? 1 : 0;
+
+ if (hp_status != priv->hp_active_low)
+ strcpy(buf, "Hp MIC\n");
+ else
+ strcpy(buf, "Main MIC\n");
+
+ return strlen(buf);
+}
+static DRIVER_ATTR(headphone, S_IRUGO | S_IWUSR, show_headphone, NULL);
+static DRIVER_ATTR(micphone, S_IRUGO | S_IWUSR, show_micphone, NULL);
+
+static void wm8960_init(struct snd_soc_card *card)
+{
+ struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
+ struct snd_soc_codec *codec = codec_dai->codec;
+ struct imx_wm8960_data *data = snd_soc_card_get_drvdata(card);
+
+ /*
+ * codec ADCLRC pin configured as GPIO, DACLRC pin is used as
+ * a frame clock for ADCs and DACs
+ */
+ snd_soc_update_bits(codec, WM8960_IFACE2, 1<<6, 1<<6);
+
+ /* GPIO1 used as headphone detect output */
+ snd_soc_update_bits(codec, WM8960_ADDCTL4, 7<<4, 3<<4);
+
+ /* Enable headphone jack detect */
+ snd_soc_update_bits(codec, WM8960_ADDCTL2, 1<<6, 1<<6);
+ snd_soc_update_bits(codec, WM8960_ADDCTL2, 1<<5, data->hp_det[1]<<5);
+ snd_soc_update_bits(codec, WM8960_ADDCTL4, 3<<2, data->hp_det[0]<<2);
+ snd_soc_update_bits(codec, WM8960_ADDCTL1, 3, 3);
+
+ /* route ADC left channel to right channel in default */
+ snd_soc_update_bits(codec, WM8960_ADDCTL1, 3<<2, 1<<2);
+}
+
+/* -1 for reserved value */
+static const int sysclk_divs[] = { 1, -1, 2, -1 };
+
+/* Multiply 256 for internal 256 div */
+static const int dac_divs[] = { 256, 384, 512, 768, 1024, 1408, 1536 };
+
+/* Multiply 10 to eliminate decimials */
+static const int bclk_divs[] = {
+ 10, 15, 20, 30, 40, 55, 60, 80, 110,
+ 120, 160, 220, 240, 320, 320, 320
+};
+
+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 *codec_dai = rtd->codec_dai;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+ struct snd_soc_card *card = rtd->card;
+ struct imx_wm8960_data *data = snd_soc_card_get_drvdata(card);
+ bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
+ struct device *dev = card->dev;
+ unsigned int sample_rate = params_rate(params);
+ unsigned int sysclk, pll_in, pll_out;
+ int i, j, k, ret = 0;
+ int bclk = snd_soc_params_to_bclk(params);
+ unsigned int fmt, plln;
+
+ if (params_channels(params) == 1)
+ bclk *= 2;
+
+ data->is_stream_in_use[tx] = true;
+
+ if (data->is_stream_in_use[!tx])
+ return 0;
+
+ if (data->is_codec_master)
+ fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBM_CFM;
+ else
+ fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS;
+
+ /* set cpu DAI configuration */
+ ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
+ if (ret) {
+ dev_err(dev, "failed to set cpu dai fmt: %d\n", ret);
+ return ret;
+ }
+ /* set codec DAI configuration */
+ ret = snd_soc_dai_set_fmt(codec_dai, fmt);
+ if (ret) {
+ dev_err(dev, "failed to set codec dai fmt: %d\n", ret);
+ return ret;
+ }
+
+ if (!data->is_codec_master) {
+ ret = snd_soc_dai_set_tdm_slot(cpu_dai,
+ 0, 0, 2, params_width(params));
+ if (ret) {
+ dev_err(dev,
+ "failed to set cpu dai tdm slot: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_dai_set_sysclk(cpu_dai, 0, 0, SND_SOC_CLOCK_OUT);
+ if (ret) {
+ dev_err(dev, "failed to set cpu sysclk: %d\n", ret);
+ return ret;
+ }
+ return 0;
+ } else {
+ ret = snd_soc_dai_set_sysclk(cpu_dai, 0, 0, SND_SOC_CLOCK_IN);
+ if (ret) {
+ dev_err(dev, "failed to set cpu sysclk: %d\n", ret);
+ return ret;
+ }
+ }
+
+ data->clk_frequency = clk_get_rate(data->codec_clk);
+
+ /* Use MCLK to provide sysclk directly */
+ sysclk = data->clk_frequency;
+
+ for (i = 0; i < ARRAY_SIZE(sysclk_divs); ++i) {
+ if (sysclk_divs[i] == -1)
+ continue;
+ sysclk /= sysclk_divs[i];
+ for (j = 0; j < ARRAY_SIZE(dac_divs); ++j) {
+ if (sysclk == sample_rate * dac_divs[j]) {
+ for (k = 0; k < ARRAY_SIZE(bclk_divs); ++k)
+ if (sysclk == bclk * bclk_divs[k] / 10)
+ break;
+ if (k != ARRAY_SIZE(bclk_divs))
+ break;
+ }
+ }
+ if (j != ARRAY_SIZE(dac_divs))
+ break;
+ }
+ if (i != ARRAY_SIZE(sysclk_divs)) {
+ /* Set codec sysclk */
+ snd_soc_dai_set_sysclk(codec_dai,
+ WM8960_SYSCLK_MCLK, sysclk, 0);
+ snd_soc_dai_set_clkdiv(codec_dai, WM8960_SYSCLKDIV, i << 1);
+ return 0;
+ }
+
+ /* Use PLL to provide sysclk */
+ pll_in = data->clk_frequency;
+
+ for (i = 0; i < ARRAY_SIZE(sysclk_divs); ++i) {
+ if (sysclk_divs[i] == -1)
+ continue;
+ for (j = 0; j < ARRAY_SIZE(dac_divs); ++j) {
+ sysclk = sample_rate * dac_divs[j];
+ pll_out = sysclk * sysclk_divs[i];
+ /*
+ * we should make sure 5 < plln < 13, or we can't get
+ * such pll_out.
+ */
+ plln = pll_out * 4 / pll_in;
+ if (plln < 6)
+ plln *= 2;
+ if ((plln < 6) || (plln > 12))
+ continue;
+ for (k = 0; k < ARRAY_SIZE(bclk_divs); ++k) {
+ if (sysclk == bclk * bclk_divs[k] / 10) {
+ /* Set codec pll */
+ ret = snd_soc_dai_set_pll(codec_dai, 0,
+ 0, data->clk_frequency,
+ pll_out);
+ if (ret != 0)
+ continue;
+ else
+ break;
+ }
+ }
+ if (k != ARRAY_SIZE(bclk_divs))
+ break;
+ }
+ if (j != ARRAY_SIZE(dac_divs))
+ break;
+ }
+ if (i != ARRAY_SIZE(sysclk_divs)) {
+ /* Set codec sysclk */
+ snd_soc_dai_set_sysclk(codec_dai, WM8960_SYSCLK_PLL, sysclk, 0);
+ snd_soc_dai_set_clkdiv(codec_dai, WM8960_SYSCLKDIV, i << 1);
+ return 0;
+ }
+
+ dev_err(dev, "failed to configure system clock");
+ return -EINVAL;
+}
+
+static int imx_hifi_hw_free(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+ struct snd_soc_card *card = rtd->card;
+ struct imx_wm8960_data *data = snd_soc_card_get_drvdata(card);
+ bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
+
+ data->is_stream_in_use[tx] = false;
+
+ /* Power down PLL to save power*/
+ if (data->is_codec_master && !data->is_stream_in_use[!tx])
+ snd_soc_dai_set_pll(codec_dai, 0, 0, 0, 0);
+
+ return 0;
+}
+
+static u32 imx_wm8960_rates[] = { 8000, 16000, 32000, 48000 };
+static struct snd_pcm_hw_constraint_list imx_wm8960_rate_constraints = {
+ .count = ARRAY_SIZE(imx_wm8960_rates),
+ .list = imx_wm8960_rates,
+};
+
+static int imx_hifi_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_card *card = rtd->card;
+ struct imx_wm8960_data *data = snd_soc_card_get_drvdata(card);
+ int ret = 0;
+
+ if (!data->is_codec_master) {
+ ret = snd_pcm_hw_constraint_list(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_RATE,
+ &imx_wm8960_rate_constraints);
+ if (ret)
+ return ret;
+ }
+
+ /* codec mclk should be enabled early to avoid jack detect error */
+ ret = clk_prepare_enable(data->codec_clk);
+ if (ret) {
+ dev_err(card->dev, "Failed to enable MCLK: %d\n", ret);
+ return ret;
+ }
+
+ return ret;
+}
+
+static void imx_hifi_shutdown(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_card *card = rtd->card;
+ struct imx_wm8960_data *data = snd_soc_card_get_drvdata(card);
+
+ clk_disable_unprepare(data->codec_clk);
+}
+
+static struct snd_soc_ops imx_hifi_ops = {
+ .hw_params = imx_hifi_hw_params,
+ .hw_free = imx_hifi_hw_free,
+ .startup = imx_hifi_startup,
+ .shutdown = imx_hifi_shutdown,
+};
+
+static int imx_wm8960_late_probe(struct snd_soc_card *card)
+{
+ struct imx_wm8960_data *data = snd_soc_card_get_drvdata(card);
+
+ /* set SAI2_MCLK_DIR to enable codec MCLK */
+ if (data->gpr)
+ regmap_update_bits(data->gpr, 4, 1<<20, 1<<20);
+
+ wm8960_init(card);
+ return 0;
+}
+
+static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_card *card = rtd->card;
+ struct imx_wm8960_data *data = snd_soc_card_get_drvdata(card);
+ struct imx_priv *priv = &card_priv;
+ struct snd_interval *rate;
+ struct snd_mask *mask;
+
+ if (!priv->asrc_pdev)
+ return -EINVAL;
+
+ rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
+ rate->max = rate->min = data->asrc_rate;
+
+ mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
+ snd_mask_none(mask);
+ snd_mask_set(mask, data->asrc_format);
+
+ return 0;
+}
+
+static struct snd_soc_dai_link imx_wm8960_dai[] = {
+ {
+ .name = "HiFi",
+ .stream_name = "HiFi",
+ .codec_dai_name = "wm8960-hifi",
+ .ops = &imx_hifi_ops,
+ },
+ {
+ .name = "HiFi-ASRC-FE",
+ .stream_name = "HiFi-ASRC-FE",
+ .codec_name = "snd-soc-dummy",
+ .codec_dai_name = "snd-soc-dummy-dai",
+ .dynamic = 1,
+ .ignore_pmdown_time = 1,
+ .dpcm_playback = 1,
+ .dpcm_capture = 1,
+ },
+ {
+ .name = "HiFi-ASRC-BE",
+ .stream_name = "HiFi-ASRC-BE",
+ .codec_dai_name = "wm8960-hifi",
+ .platform_name = "snd-soc-dummy",
+ .no_pcm = 1,
+ .ignore_pmdown_time = 1,
+ .dpcm_playback = 1,
+ .dpcm_capture = 1,
+ .ops = &imx_hifi_ops,
+ .be_hw_params_fixup = be_hw_params_fixup,
+ },
+};
+
+static int imx_wm8960_probe(struct platform_device *pdev)
+{
+ struct device_node *cpu_np, *codec_np, *gpr_np;
+ struct platform_device *cpu_pdev;
+ struct imx_priv *priv = &card_priv;
+ struct i2c_client *codec_dev;
+ struct imx_wm8960_data *data;
+ struct platform_device *asrc_pdev = NULL;
+ struct device_node *asrc_np;
+ u32 width;
+ int ret;
+
+ priv->pdev = pdev;
+
+ cpu_np = of_parse_phandle(pdev->dev.of_node, "cpu-dai", 0);
+ if (!cpu_np) {
+ dev_err(&pdev->dev, "cpu dai phandle missing or invalid\n");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
+ if (!codec_np) {
+ dev_err(&pdev->dev, "phandle missing or invalid\n");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ cpu_pdev = of_find_device_by_node(cpu_np);
+ if (!cpu_pdev) {
+ dev_err(&pdev->dev, "failed to find SAI 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;
+ }
+
+ if (of_property_read_bool(pdev->dev.of_node, "codec-master"))
+ data->is_codec_master = true;
+
+ data->codec_clk = devm_clk_get(&codec_dev->dev, "mclk");
+ if (IS_ERR(data->codec_clk)) {
+ ret = PTR_ERR(data->codec_clk);
+ dev_err(&pdev->dev, "failed to get codec clk: %d\n", ret);
+ goto fail;
+ }
+
+ gpr_np = of_parse_phandle(pdev->dev.of_node, "gpr", 0);
+ if (gpr_np) {
+ data->gpr = syscon_node_to_regmap(gpr_np);
+ if (IS_ERR(data->gpr)) {
+ ret = PTR_ERR(data->gpr);
+ dev_err(&pdev->dev, "failed to get gpr regmap\n");
+ goto fail;
+ }
+ }
+
+ /*
+ * hp-det = <hp-det-pin hp-det-polarity>;
+ * hp-det-pin: JD1 JD2 or JD3
+ * hp-det-polarity = 0: hp detect high for headphone
+ * hp-det-polarity = 1: hp detect high for speaker
+ */
+ of_property_read_u32_array(pdev->dev.of_node,
+ "hp-det", data->hp_det, 2);
+
+ asrc_np = of_parse_phandle(pdev->dev.of_node, "asrc-controller", 0);
+ if (asrc_np) {
+ asrc_pdev = of_find_device_by_node(asrc_np);
+ priv->asrc_pdev = asrc_pdev;
+ }
+
+ data->card.dai_link = imx_wm8960_dai;
+
+ imx_wm8960_dai[0].codec_of_node = codec_np;
+ imx_wm8960_dai[0].cpu_dai_name = dev_name(&cpu_pdev->dev);
+ imx_wm8960_dai[0].platform_of_node = cpu_np;
+
+ if (!asrc_pdev) {
+ data->card.num_links = 1;
+ } else {
+ imx_wm8960_dai[1].cpu_of_node = asrc_np;
+ imx_wm8960_dai[1].platform_of_node = asrc_np;
+ imx_wm8960_dai[2].codec_of_node = codec_np;
+ imx_wm8960_dai[2].cpu_dai_name = dev_name(&cpu_pdev->dev);
+ data->card.num_links = 3;
+
+ ret = of_property_read_u32(asrc_np, "fsl,asrc-rate",
+ &data->asrc_rate);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to get output rate\n");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ ret = of_property_read_u32(asrc_np, "fsl,asrc-width", &width);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to get output rate\n");
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ if (width == 24)
+ data->asrc_format = SNDRV_PCM_FORMAT_S24_LE;
+ else
+ data->asrc_format = SNDRV_PCM_FORMAT_S16_LE;
+ }
+
+ data->card.dev = &pdev->dev;
+ ret = snd_soc_of_parse_card_name(&data->card, "model");
+ if (ret)
+ goto fail;
+ data->card.dapm_widgets = imx_wm8960_dapm_widgets;
+ data->card.num_dapm_widgets = ARRAY_SIZE(imx_wm8960_dapm_widgets);
+
+ ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
+ if (ret)
+ goto fail;
+
+ data->card.late_probe = imx_wm8960_late_probe;
+
+ 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, "failed to register card (%d)\n", ret);
+ goto fail;
+ }
+
+ priv->snd_card = data->card.snd_card;
+
+ priv->hp_set_gpio = of_get_named_gpio_flags(pdev->dev.of_node,
+ "hp-det-gpios", 0,
+ (enum of_gpio_flags *)&priv->hp_active_low);
+ if (IS_ERR(ERR_PTR(priv->hp_set_gpio)))
+ goto fail;
+
+ priv->headset_kctl = snd_kctl_jack_new("Headset", priv->snd_card);
+ ret = snd_ctl_add(data->card.snd_card, priv->headset_kctl);
+ if (ret)
+ goto fail;
+
+ ret = imx_wm8960_gpio_init(&data->card);
+
+ if (gpio_is_valid(priv->hp_set_gpio)) {
+ ret = driver_create_file(pdev->dev.driver,
+ &driver_attr_headphone);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "create hp attr failed (%d)\n", ret);
+ goto fail;
+ }
+ ret = driver_create_file(pdev->dev.driver,
+ &driver_attr_micphone);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "create mic attr failed (%d)\n", ret);
+ goto fail;
+ }
+ }
+fail:
+ if (cpu_np)
+ of_node_put(cpu_np);
+ if (codec_np)
+ of_node_put(codec_np);
+
+ return ret;
+}
+
+static const struct of_device_id imx_wm8960_dt_ids[] = {
+ { .compatible = "fsl,imx-audio-wm8960", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, imx_wm8960_dt_ids);
+
+static struct platform_driver imx_wm8960_driver = {
+ .driver = {
+ .name = "imx-wm8960",
+ .owner = THIS_MODULE,
+ .pm = &snd_soc_pm_ops,
+ .of_match_table = imx_wm8960_dt_ids,
+ },
+ .probe = imx_wm8960_probe,
+};
+module_platform_driver(imx_wm8960_driver);
+
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("Freescale i.MX WM8960 ASoC machine driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:imx-wm8960");
--
1.9.1
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