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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>
imx_3.10.53_1.1.0_ga
Shengjiu Wang 6 years ago
parent
commit
cac9eb41de
4 changed files with 181 additions and 0 deletions
  1. +18
    -0
      Documentation/devicetree/bindings/sound/imx-audio-mqs.txt
  2. +8
    -0
      sound/soc/fsl/Kconfig
  3. +2
    -0
      sound/soc/fsl/Makefile
  4. +153
    -0
      sound/soc/fsl/imx-mqs.c

+ 18
- 0
Documentation/devicetree/bindings/sound/imx-audio-mqs.txt View File

@ -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>;
};

+ 8
- 0
sound/soc/fsl/Kconfig View File

@ -235,6 +235,14 @@ 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


+ 2
- 0
sound/soc/fsl/Makefile View File

@ -61,6 +61,7 @@ snd-soc-imx-spdif-objs := imx-spdif.o
snd-soc-imx-mc13783-objs := imx-mc13783.o
snd-soc-imx-hdmi-objs := imx-hdmi.o
snd-soc-imx-si476x-objs := imx-si476x.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
@ -73,5 +74,6 @@ obj-$(CONFIG_SND_SOC_IMX_SPDIF) += snd-soc-imx-spdif.o
obj-$(CONFIG_SND_SOC_IMX_MC13783) += snd-soc-imx-mc13783.o
obj-$(CONFIG_SND_SOC_IMX_HDMI) += snd-soc-imx-hdmi.o
obj-$(CONFIG_SND_SOC_IMX_SI476X) += snd-soc-imx-si476x.o
obj-$(CONFIG_SND_SOC_IMX_MQS) += snd-soc-imx-mqs.o
AFLAGS_hdmi_pcm.o := -march=armv7-a -mtune=cortex-a9 -mfpu=neon -mfloat-abi=softfp

+ 153
- 0
sound/soc/fsl/imx-mqs.c View File

@ -0,0 +1,153 @@
/*
* 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 <linux/of_i2c.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",
.owner = THIS_MODULE,
.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");

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