Re: [alsa-devel] [PATCH] ASoC: fsl: add imx-wm8960 machine driver

On Wed, Jun 10, 2015 at 04:26:27PM +0800, Zidan Wang wrote:

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@freescale.com

Above all, could you merge this into fsl-asoc-card?

It'd be nicer to have jack detection over there. And we can put PLL settings to the codec driver as Mark suggested.

Thanks Nicolin

---

.../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