diff options
| -rw-r--r-- | Documentation/devicetree/bindings/sound/imx-audio-mqs.txt | 18 | ||||
| -rw-r--r-- | sound/soc/fsl/Kconfig | 8 | ||||
| -rw-r--r-- | sound/soc/fsl/Makefile | 2 | ||||
| -rw-r--r-- | sound/soc/fsl/imx-mqs.c | 151 |
4 files changed, 179 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/imx-audio-mqs.txt b/Documentation/devicetree/bindings/sound/imx-audio-mqs.txt new file mode 100644 index 000000000000..1d42bd03d5c7 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/imx-audio-mqs.txt @@ -0,0 +1,18 @@ +Freescale i.MX audio complex with mqs codec + +Required properties: +- compatible : "fsl,imx-audio-mqs" +- model : The user-visible name of this sound complex +- cpu-dai : The phandle of the i.MX sai controller +- audio-codec : The phandle of the mqs audio codec + +Example: + +sound-mqs { + compatible = "fsl,imx6sx-sdb-mqs", + "fsl,imx-audio-mqs"; + model = "mqs-audio"; + cpu-dai = <&sai1>; + audio-codec = <&mqs>; +}; + diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig index 46bacc35741e..3dd47b46c30b 100644 --- a/sound/soc/fsl/Kconfig +++ b/sound/soc/fsl/Kconfig @@ -291,6 +291,14 @@ config SND_SOC_IMX_SGTL5000 Say Y if you want to add support for SoC audio on an i.MX board with a sgtl5000 codec. +config SND_SOC_IMX_MQS + tristate "SoC Audio support for i.MX boards with MQS" + depends on OF + select SND_SOC_IMX_PCM_DMA + select SND_SOC_FSL_SAI + select SND_SOC_FSL_MQS + select SND_SOC_FSL_UTILS + config SND_SOC_IMX_SPDIF tristate "SoC Audio support for i.MX boards with S/PDIF" select SND_SOC_IMX_PCM_DMA diff --git a/sound/soc/fsl/Makefile b/sound/soc/fsl/Makefile index 4ce3cd09319f..93a4ac787949 100644 --- a/sound/soc/fsl/Makefile +++ b/sound/soc/fsl/Makefile @@ -59,6 +59,7 @@ 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 +snd-soc-imx-mqs-objs := imx-mqs.o obj-$(CONFIG_SND_SOC_EUKREA_TLV320) += snd-soc-eukrea-tlv320.o obj-$(CONFIG_SND_SOC_PHYCORE_AC97) += snd-soc-phycore-ac97.o @@ -71,3 +72,4 @@ 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 +obj-$(CONFIG_SND_SOC_IMX_MQS) += snd-soc-imx-mqs.o diff --git a/sound/soc/fsl/imx-mqs.c b/sound/soc/fsl/imx-mqs.c new file mode 100644 index 000000000000..7f52d31d9e1e --- /dev/null +++ b/sound/soc/fsl/imx-mqs.c @@ -0,0 +1,151 @@ +/* + * Copyright 2012, 2014 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/clk.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_platform.h> +#include <sound/soc.h> + +#define SUPPORT_RATE_NUM 10 + +struct imx_priv { + unsigned int mclk_freq; + struct platform_device *pdev; +}; + +static struct imx_priv card_priv; + +static int imx_mqs_startup(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + static struct snd_pcm_hw_constraint_list constraint_rates; + struct imx_priv *priv = &card_priv; + struct device *dev = &priv->pdev->dev; + static u32 support_rates[SUPPORT_RATE_NUM]; + int ret; + + if (priv->mclk_freq == 24576000) { + support_rates[0] = 48000; + support_rates[1] = 96000; + support_rates[2] = 192000; + constraint_rates.list = support_rates; + constraint_rates.count = 3; + + ret = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, + &constraint_rates); + if (ret) + return ret; + } else + dev_warn(dev, "mclk may be not supported %d\n", priv->mclk_freq); + + return 0; +} + +static struct snd_soc_ops imx_mqs_ops = { + .startup = imx_mqs_startup, +}; + + + +static struct snd_soc_dai_link imx_mqs_dai = { + .name = "HiFi", + .stream_name = "HiFi", + .dai_fmt = SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS, + .ops = &imx_mqs_ops, +}; + +static struct snd_soc_card snd_soc_card_imx_mqs = { + .name = "mqs-audio", + .dai_link = &imx_mqs_dai, + .owner = THIS_MODULE, + .num_links = 1, +}; + +static int imx_mqs_probe(struct platform_device *pdev) +{ + struct device_node *cpu_np, *codec_np; + struct imx_priv *priv = &card_priv; + struct clk *codec_clk = NULL; + struct platform_device *codec_dev; + int ret; + + priv->pdev = pdev; + + cpu_np = of_parse_phandle(pdev->dev.of_node, "cpu-dai", 0); + if (!cpu_np) { + 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; + } + + codec_dev = of_find_device_by_node(codec_np); + if (!codec_dev) { + dev_err(&codec_dev->dev, "failed to find codec device\n"); + ret = -EINVAL; + goto fail; + } + + codec_clk = devm_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; + } + priv->mclk_freq = clk_get_rate(codec_clk); + + + imx_mqs_dai.cpu_of_node = cpu_np; + imx_mqs_dai.platform_of_node = cpu_np; + imx_mqs_dai.codec_dai_name = "fsl-mqs-dai"; + imx_mqs_dai.codec_of_node = codec_np; + snd_soc_card_imx_mqs.dev = &pdev->dev; + + ret = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_imx_mqs); + if (ret) { + dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); + goto fail; + } + +fail: + if (cpu_np) + of_node_put(cpu_np); + + return ret; +} + +static const struct of_device_id imx_mqs_dt_ids[] = { + { .compatible = "fsl,imx-audio-mqs", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, imx_mqs_dt_ids); + +static struct platform_driver imx_mqs_driver = { + .driver = { + .name = "imx-mqs", + .of_match_table = imx_mqs_dt_ids, + }, + .probe = imx_mqs_probe, +}; +module_platform_driver(imx_mqs_driver); + +MODULE_AUTHOR("Nicolin Chen <Guangyu.Chen@freescale.com>"); +MODULE_DESCRIPTION("Freescale i.MX MQS ASoC machine driver"); +MODULE_ALIAS("platform:imx-mqs"); +MODULE_LICENSE("GPL v2"); |