+++ /dev/null
-/*
- * Copyright 2013 Freescale Semiconductor, Inc.
- *
- * Based on imx-sgtl5000.c
- * Copyright 2012 Freescale Semiconductor, Inc.
- * Copyright 2012 Linaro Ltd.
- *
- * 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/slab.h>
-#include <linux/clk.h>
-#include <sound/soc.h>
-#include <sound/pcm_params.h>
-#include <sound/soc-dapm.h>
-#include <linux/pinctrl/consumer.h>
-
-#include "../codecs/wm8962.h"
-#include "imx-audmux.h"
-
-#define DAI_NAME_SIZE 32
-
-struct imx_wm8962_data {
- struct snd_soc_dai_link dai;
- struct snd_soc_card card;
- char codec_dai_name[DAI_NAME_SIZE];
- char platform_name[DAI_NAME_SIZE];
- unsigned int clk_frequency;
-};
-
-struct imx_priv {
- struct platform_device *pdev;
- int sample_rate;
- snd_pcm_format_t sample_format;
-};
-
-static const struct snd_soc_dapm_widget imx_wm8962_dapm_widgets[] = {
- SND_SOC_DAPM_HP("Headphone Jack", NULL),
- SND_SOC_DAPM_SPK("Ext Spk", NULL),
- SND_SOC_DAPM_MIC("AMIC", NULL),
- SND_SOC_DAPM_MIC("DMIC", NULL),
-};
-
-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 imx_priv *priv = snd_soc_card_get_drvdata(rtd->card);
-
- priv->sample_rate = params_rate(params);
- priv->sample_format = params_format(params);
-
- return 0;
-}
-
-static const struct snd_soc_ops imx_hifi_ops = {
- .hw_params = imx_hifi_hw_params,
-};
-
-static int imx_wm8962_set_bias_level(struct snd_soc_card *card,
- struct snd_soc_dapm_context *dapm,
- enum snd_soc_bias_level level)
-{
- struct snd_soc_pcm_runtime *rtd;
- struct snd_soc_dai *codec_dai;
- struct imx_priv *priv = snd_soc_card_get_drvdata(card);
- struct imx_wm8962_data *data = snd_soc_card_get_drvdata(card);
- struct device *dev = &priv->pdev->dev;
- unsigned int pll_out;
- int ret;
-
- rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
- codec_dai = rtd->codec_dai;
- if (dapm->dev != codec_dai->dev)
- return 0;
-
- switch (level) {
- case SND_SOC_BIAS_PREPARE:
- if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
- if (priv->sample_format == SNDRV_PCM_FORMAT_S24_LE)
- pll_out = priv->sample_rate * 384;
- else
- pll_out = priv->sample_rate * 256;
-
- ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
- WM8962_FLL_MCLK, data->clk_frequency,
- pll_out);
- if (ret < 0) {
- dev_err(dev, "failed to start FLL: %d\n", ret);
- return ret;
- }
-
- ret = snd_soc_dai_set_sysclk(codec_dai,
- WM8962_SYSCLK_FLL, pll_out,
- SND_SOC_CLOCK_IN);
- if (ret < 0) {
- dev_err(dev, "failed to set SYSCLK: %d\n", ret);
- return ret;
- }
- }
- break;
-
- case SND_SOC_BIAS_STANDBY:
- if (dapm->bias_level == SND_SOC_BIAS_PREPARE) {
- ret = snd_soc_dai_set_sysclk(codec_dai,
- WM8962_SYSCLK_MCLK, data->clk_frequency,
- SND_SOC_CLOCK_IN);
- if (ret < 0) {
- dev_err(dev,
- "failed to switch away from FLL: %d\n",
- ret);
- return ret;
- }
-
- ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
- 0, 0, 0);
- if (ret < 0) {
- dev_err(dev, "failed to stop FLL: %d\n", ret);
- return ret;
- }
- }
- break;
-
- default:
- break;
- }
-
- return 0;
-}
-
-static int imx_wm8962_late_probe(struct snd_soc_card *card)
-{
- struct snd_soc_pcm_runtime *rtd;
- struct snd_soc_dai *codec_dai;
- struct imx_priv *priv = snd_soc_card_get_drvdata(card);
- struct imx_wm8962_data *data = snd_soc_card_get_drvdata(card);
- struct device *dev = &priv->pdev->dev;
- int ret;
-
- rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
- codec_dai = rtd->codec_dai;
- ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
- data->clk_frequency, SND_SOC_CLOCK_IN);
- if (ret < 0)
- dev_err(dev, "failed to set sysclk in %s\n", __func__);
-
- return ret;
-}
-
-static int imx_wm8962_probe(struct platform_device *pdev)
-{
- struct device_node *np = pdev->dev.of_node;
- struct device_node *ssi_np, *codec_np;
- struct platform_device *ssi_pdev;
- struct i2c_client *codec_dev;
- struct imx_wm8962_data *data;
- struct imx_priv *priv;
- struct clk *codec_clk;
- int int_port, ext_port;
- int ret;
-
- priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
- if (!priv)
- return -ENOMEM;
-
- priv->pdev = pdev;
- priv->sample_rate = 44100;
- priv->sample_format = SNDRV_PCM_FORMAT_S16_LE;
-
- ret = of_property_read_u32(np, "mux-int-port", &int_port);
- if (ret) {
- dev_err(&pdev->dev, "mux-int-port missing or invalid\n");
- return ret;
- }
- ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
- if (ret) {
- dev_err(&pdev->dev, "mux-ext-port missing or invalid\n");
- return ret;
- }
-
- /*
- * The port numbering in the hardware manual starts at 1, while
- * the audmux API expects it starts at 0.
- */
- int_port--;
- ext_port--;
- ret = imx_audmux_v2_configure_port(int_port,
- IMX_AUDMUX_V2_PTCR_SYN |
- IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
- IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
- IMX_AUDMUX_V2_PTCR_TFSDIR |
- IMX_AUDMUX_V2_PTCR_TCLKDIR,
- IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
- if (ret) {
- dev_err(&pdev->dev, "audmux internal port setup failed\n");
- return ret;
- }
- ret = imx_audmux_v2_configure_port(ext_port,
- IMX_AUDMUX_V2_PTCR_SYN,
- IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
- if (ret) {
- dev_err(&pdev->dev, "audmux external port setup failed\n");
- return ret;
- }
-
- ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
- codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
- if (!ssi_np || !codec_np) {
- dev_err(&pdev->dev, "phandle missing or invalid\n");
- ret = -EINVAL;
- goto fail;
- }
-
- ssi_pdev = of_find_device_by_node(ssi_np);
- if (!ssi_pdev) {
- dev_err(&pdev->dev, "failed to find SSI 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;
- }
-
- codec_clk = clk_get(&codec_dev->dev, NULL);
- if (IS_ERR(codec_clk)) {
- ret = PTR_ERR(codec_clk);
- dev_err(&codec_dev->dev, "failed to get codec clk: %d\n", ret);
- goto fail;
- }
-
- data->clk_frequency = clk_get_rate(codec_clk);
- clk_put(codec_clk);
-
- data->dai.name = "HiFi";
- data->dai.stream_name = "HiFi";
- data->dai.codec_dai_name = "wm8962";
- data->dai.codec_of_node = codec_np;
- data->dai.cpu_dai_name = dev_name(&ssi_pdev->dev);
- data->dai.platform_of_node = ssi_np;
- data->dai.ops = &imx_hifi_ops;
- data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
- SND_SOC_DAIFMT_CBM_CFM;
-
- data->card.dev = &pdev->dev;
- ret = snd_soc_of_parse_card_name(&data->card, "model");
- if (ret)
- goto fail;
- ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
- if (ret)
- goto fail;
- data->card.num_links = 1;
- data->card.owner = THIS_MODULE;
- data->card.dai_link = &data->dai;
- data->card.dapm_widgets = imx_wm8962_dapm_widgets;
- data->card.num_dapm_widgets = ARRAY_SIZE(imx_wm8962_dapm_widgets);
-
- data->card.late_probe = imx_wm8962_late_probe;
- data->card.set_bias_level = imx_wm8962_set_bias_level;
-
- 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, "snd_soc_register_card failed (%d)\n", ret);
- goto fail;
- }
-
-fail:
- of_node_put(ssi_np);
- of_node_put(codec_np);
-
- return ret;
-}
-
-static const struct of_device_id imx_wm8962_dt_ids[] = {
- { .compatible = "fsl,imx-audio-wm8962", },
- { /* sentinel */ }
-};
-MODULE_DEVICE_TABLE(of, imx_wm8962_dt_ids);
-
-static struct platform_driver imx_wm8962_driver = {
- .driver = {
- .name = "imx-wm8962",
- .pm = &snd_soc_pm_ops,
- .of_match_table = imx_wm8962_dt_ids,
- },
- .probe = imx_wm8962_probe,
-};
-module_platform_driver(imx_wm8962_driver);
-
-MODULE_AUTHOR("Freescale Semiconductor, Inc.");
-MODULE_DESCRIPTION("Freescale i.MX WM8962 ASoC machine driver");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:imx-wm8962");
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