MLK-9723-5: ASoC: imx-mqs: add mqs machine driver
Implement machine driver for mqs, which use the sai as cpu dai. sai work on master mode. Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com> (cherry picked from commit cac9eb41debc6444d753dc936cdf76874260b9e4)zero-colors
parent
cc3d498408
commit
953b49f01a
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@ -0,0 +1,18 @@
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Freescale i.MX audio complex with mqs codec
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Required properties:
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- compatible : "fsl,imx-audio-mqs"
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- model : The user-visible name of this sound complex
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- cpu-dai : The phandle of the i.MX sai controller
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- audio-codec : The phandle of the mqs audio codec
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Example:
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sound-mqs {
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compatible = "fsl,imx6sx-sdb-mqs",
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"fsl,imx-audio-mqs";
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model = "mqs-audio";
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cpu-dai = <&sai1>;
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audio-codec = <&mqs>;
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};
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@ -310,6 +310,14 @@ config SND_SOC_IMX_SGTL5000
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Say Y if you want to add support for SoC audio on an i.MX board with
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a sgtl5000 codec.
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config SND_SOC_IMX_MQS
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tristate "SoC Audio support for i.MX boards with MQS"
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depends on OF
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select SND_SOC_IMX_PCM_DMA
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select SND_SOC_FSL_SAI
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select SND_SOC_FSL_MQS
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select SND_SOC_FSL_UTILS
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config SND_SOC_IMX_SPDIF
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tristate "SoC Audio support for i.MX boards with S/PDIF"
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select SND_SOC_IMX_PCM_DMA
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@ -66,6 +66,7 @@ snd-soc-imx-wm8962-objs := imx-wm8962.o
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snd-soc-imx-spdif-objs := imx-spdif.o
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snd-soc-imx-mc13783-objs := imx-mc13783.o
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snd-soc-imx-audmix-objs := imx-audmix.o
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snd-soc-imx-mqs-objs := imx-mqs.o
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obj-$(CONFIG_SND_SOC_EUKREA_TLV320) += snd-soc-eukrea-tlv320.o
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obj-$(CONFIG_SND_SOC_PHYCORE_AC97) += snd-soc-phycore-ac97.o
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@ -79,3 +80,4 @@ obj-$(CONFIG_SND_SOC_IMX_WM8962) += snd-soc-imx-wm8962.o
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obj-$(CONFIG_SND_SOC_IMX_SPDIF) += snd-soc-imx-spdif.o
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obj-$(CONFIG_SND_SOC_IMX_MC13783) += snd-soc-imx-mc13783.o
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obj-$(CONFIG_SND_SOC_IMX_AUDMIX) += snd-soc-imx-audmix.o
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obj-$(CONFIG_SND_SOC_IMX_MQS) += snd-soc-imx-mqs.o
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@ -0,0 +1,151 @@
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/*
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* Copyright 2012, 2014 Freescale Semiconductor, Inc.
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* Copyright 2012 Linaro Ltd.
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*
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* The code contained herein is licensed under the GNU General Public
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* License. You may obtain a copy of the GNU General Public License
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* Version 2 or later at the following locations:
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*
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* http://www.opensource.org/licenses/gpl-license.html
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* http://www.gnu.org/copyleft/gpl.html
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*/
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#include <linux/clk.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_platform.h>
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#include <sound/soc.h>
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#define SUPPORT_RATE_NUM 10
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struct imx_priv {
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unsigned int mclk_freq;
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struct platform_device *pdev;
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};
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static struct imx_priv card_priv;
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static int imx_mqs_startup(struct snd_pcm_substream *substream)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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static struct snd_pcm_hw_constraint_list constraint_rates;
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struct imx_priv *priv = &card_priv;
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struct device *dev = &priv->pdev->dev;
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static u32 support_rates[SUPPORT_RATE_NUM];
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int ret;
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if (priv->mclk_freq == 24576000) {
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support_rates[0] = 48000;
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support_rates[1] = 96000;
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support_rates[2] = 192000;
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constraint_rates.list = support_rates;
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constraint_rates.count = 3;
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ret = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
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&constraint_rates);
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if (ret)
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return ret;
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} else
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dev_warn(dev, "mclk may be not supported %d\n", priv->mclk_freq);
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return 0;
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}
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static struct snd_soc_ops imx_mqs_ops = {
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.startup = imx_mqs_startup,
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};
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static struct snd_soc_dai_link imx_mqs_dai = {
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.name = "HiFi",
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.stream_name = "HiFi",
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.dai_fmt = SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBS_CFS,
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.ops = &imx_mqs_ops,
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};
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static struct snd_soc_card snd_soc_card_imx_mqs = {
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.name = "mqs-audio",
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.dai_link = &imx_mqs_dai,
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.owner = THIS_MODULE,
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.num_links = 1,
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};
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static int imx_mqs_probe(struct platform_device *pdev)
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{
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struct device_node *cpu_np, *codec_np;
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struct imx_priv *priv = &card_priv;
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struct clk *codec_clk = NULL;
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struct platform_device *codec_dev;
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int ret;
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priv->pdev = pdev;
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cpu_np = of_parse_phandle(pdev->dev.of_node, "cpu-dai", 0);
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if (!cpu_np) {
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ret = -EINVAL;
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goto fail;
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}
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codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
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if (!codec_np) {
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dev_err(&pdev->dev, "phandle missing or invalid\n");
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ret = -EINVAL;
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goto fail;
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}
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codec_dev = of_find_device_by_node(codec_np);
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if (!codec_dev) {
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dev_err(&codec_dev->dev, "failed to find codec device\n");
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ret = -EINVAL;
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goto fail;
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}
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codec_clk = devm_clk_get(&codec_dev->dev, NULL);
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if (IS_ERR(codec_clk)) {
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ret = PTR_ERR(codec_clk);
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dev_err(&codec_dev->dev, "failed to get codec clk: %d\n", ret);
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goto fail;
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}
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priv->mclk_freq = clk_get_rate(codec_clk);
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imx_mqs_dai.cpu_of_node = cpu_np;
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imx_mqs_dai.platform_of_node = cpu_np;
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imx_mqs_dai.codec_dai_name = "fsl-mqs-dai";
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imx_mqs_dai.codec_of_node = codec_np;
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snd_soc_card_imx_mqs.dev = &pdev->dev;
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ret = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_imx_mqs);
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if (ret) {
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dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
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goto fail;
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}
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fail:
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if (cpu_np)
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of_node_put(cpu_np);
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return ret;
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}
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static const struct of_device_id imx_mqs_dt_ids[] = {
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{ .compatible = "fsl,imx-audio-mqs", },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, imx_mqs_dt_ids);
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static struct platform_driver imx_mqs_driver = {
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.driver = {
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.name = "imx-mqs",
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.of_match_table = imx_mqs_dt_ids,
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},
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.probe = imx_mqs_probe,
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};
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module_platform_driver(imx_mqs_driver);
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MODULE_AUTHOR("Nicolin Chen <Guangyu.Chen@freescale.com>");
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MODULE_DESCRIPTION("Freescale i.MX MQS ASoC machine driver");
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MODULE_ALIAS("platform:imx-mqs");
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MODULE_LICENSE("GPL v2");
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