ASoC: fsl: Add Audio Mixer machine driver
This patch implements Audio Mixer machine driver for NXP iMX8 SOCs. It connects together Audio Mixer and related SAI instances. Signed-off-by: Viorel Suman <viorel.suman@nxp.com> Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Viorel Suman
Mark Brown
parent
d0d9071b72
commit
b86ef53677
@ -303,6 +303,15 @@ config SND_SOC_FSL_ASOC_CARD
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CS4271, CS4272 and SGTL5000.
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Say Y if you want to add support for Freescale Generic ASoC Sound Card.
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config SND_SOC_IMX_AUDMIX
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tristate "SoC Audio support for i.MX boards with AUDMIX"
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select SND_SOC_FSL_AUDMIX
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select SND_SOC_FSL_SAI
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help
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SoC Audio support for i.MX boards with Audio Mixer
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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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an Audio Mixer.
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endif # SND_IMX_SOC
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endmenu
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@ -62,6 +62,7 @@ snd-soc-imx-es8328-objs := imx-es8328.o
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snd-soc-imx-sgtl5000-objs := imx-sgtl5000.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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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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@ -71,3 +72,4 @@ obj-$(CONFIG_SND_SOC_IMX_ES8328) += snd-soc-imx-es8328.o
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obj-$(CONFIG_SND_SOC_IMX_SGTL5000) += snd-soc-imx-sgtl5000.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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327
sound/soc/fsl/imx-audmix.c
Normal file
327
sound/soc/fsl/imx-audmix.c
Normal file
@ -0,0 +1,327 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright 2017 NXP
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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/module.h>
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#include <linux/of_platform.h>
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#include <linux/clk.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <linux/pm_runtime.h>
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#include "fsl_sai.h"
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#include "fsl_audmix.h"
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struct imx_audmix {
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struct platform_device *pdev;
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struct snd_soc_card card;
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struct platform_device *audmix_pdev;
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struct platform_device *out_pdev;
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struct clk *cpu_mclk;
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int num_dai;
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struct snd_soc_dai_link *dai;
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int num_dai_conf;
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struct snd_soc_codec_conf *dai_conf;
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int num_dapm_routes;
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struct snd_soc_dapm_route *dapm_routes;
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};
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static const u32 imx_audmix_rates[] = {
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8000, 12000, 16000, 24000, 32000, 48000, 64000, 96000,
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};
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static const struct snd_pcm_hw_constraint_list imx_audmix_rate_constraints = {
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.count = ARRAY_SIZE(imx_audmix_rates),
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.list = imx_audmix_rates,
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};
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static int imx_audmix_fe_startup(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct imx_audmix *priv = snd_soc_card_get_drvdata(rtd->card);
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struct snd_pcm_runtime *runtime = substream->runtime;
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struct device *dev = rtd->card->dev;
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unsigned long clk_rate = clk_get_rate(priv->cpu_mclk);
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int ret;
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if (clk_rate % 24576000 == 0) {
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ret = snd_pcm_hw_constraint_list(runtime, 0,
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SNDRV_PCM_HW_PARAM_RATE,
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&imx_audmix_rate_constraints);
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if (ret < 0)
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return ret;
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} else {
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dev_warn(dev, "mclk may be not supported %lu\n", clk_rate);
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}
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ret = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS,
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1, 8);
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if (ret < 0)
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return ret;
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return snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT,
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FSL_AUDMIX_FORMATS);
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}
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static int imx_audmix_fe_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct device *dev = rtd->card->dev;
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bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
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unsigned int fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_NB_NF;
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u32 channels = params_channels(params);
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int ret, dir;
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/* For playback the AUDMIX is slave, and for record is master */
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fmt |= tx ? SND_SOC_DAIFMT_CBS_CFS : SND_SOC_DAIFMT_CBM_CFM;
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dir = tx ? SND_SOC_CLOCK_OUT : SND_SOC_CLOCK_IN;
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/* set DAI configuration */
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ret = snd_soc_dai_set_fmt(rtd->cpu_dai, fmt);
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if (ret) {
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dev_err(dev, "failed to set cpu dai fmt: %d\n", ret);
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return ret;
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}
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ret = snd_soc_dai_set_sysclk(rtd->cpu_dai, FSL_SAI_CLK_MAST1, 0, dir);
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if (ret) {
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dev_err(dev, "failed to set cpu sysclk: %d\n", ret);
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return ret;
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}
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/*
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* Per datasheet, AUDMIX expects 8 slots and 32 bits
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* for every slot in TDM mode.
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*/
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ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, BIT(channels) - 1,
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BIT(channels) - 1, 8, 32);
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if (ret)
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dev_err(dev, "failed to set cpu dai tdm slot: %d\n", ret);
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return ret;
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}
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static int imx_audmix_be_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct device *dev = rtd->card->dev;
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bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
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unsigned int fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_NB_NF;
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int ret;
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if (!tx)
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return 0;
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/* For playback the AUDMIX is slave */
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fmt |= SND_SOC_DAIFMT_CBM_CFM;
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/* set AUDMIX DAI configuration */
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ret = snd_soc_dai_set_fmt(rtd->cpu_dai, fmt);
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if (ret)
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dev_err(dev, "failed to set AUDMIX DAI fmt: %d\n", ret);
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return ret;
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}
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static struct snd_soc_ops imx_audmix_fe_ops = {
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.startup = imx_audmix_fe_startup,
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.hw_params = imx_audmix_fe_hw_params,
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};
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static struct snd_soc_ops imx_audmix_be_ops = {
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.hw_params = imx_audmix_be_hw_params,
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};
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static int imx_audmix_probe(struct platform_device *pdev)
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{
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struct device_node *np = pdev->dev.of_node;
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struct device_node *audmix_np = NULL, *out_cpu_np = NULL;
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struct platform_device *audmix_pdev = NULL;
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struct platform_device *cpu_pdev;
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struct of_phandle_args args;
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struct imx_audmix *priv;
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int i, num_dai, ret;
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const char *fe_name_pref = "HiFi-AUDMIX-FE-";
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char *be_name, *be_pb, *be_cp, *dai_name, *capture_dai_name;
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if (pdev->dev.parent) {
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audmix_np = pdev->dev.parent->of_node;
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} else {
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dev_err(&pdev->dev, "Missing parent device.\n");
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return -EINVAL;
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}
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if (!audmix_np) {
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dev_err(&pdev->dev, "Missign DT node for parent device.\n");
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return -EINVAL;
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}
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audmix_pdev = of_find_device_by_node(audmix_np);
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if (!audmix_pdev) {
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dev_err(&pdev->dev, "Missing AUDMIX platform device for %s\n",
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np->full_name);
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return -EINVAL;
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}
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num_dai = of_count_phandle_with_args(audmix_np, "dais", NULL);
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if (num_dai != FSL_AUDMIX_MAX_DAIS) {
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dev_err(&pdev->dev, "Need 2 dais to be provided for %s\n",
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audmix_np->full_name);
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return -EINVAL;
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}
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priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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priv->num_dai = 2 * num_dai;
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priv->dai = devm_kzalloc(&pdev->dev, priv->num_dai *
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sizeof(struct snd_soc_dai_link), GFP_KERNEL);
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if (!priv->dai)
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return -ENOMEM;
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priv->num_dai_conf = num_dai;
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priv->dai_conf = devm_kzalloc(&pdev->dev, priv->num_dai_conf *
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sizeof(struct snd_soc_codec_conf),
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GFP_KERNEL);
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if (!priv->dai_conf)
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return -ENOMEM;
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priv->num_dapm_routes = 3 * num_dai;
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priv->dapm_routes = devm_kzalloc(&pdev->dev, priv->num_dapm_routes *
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sizeof(struct snd_soc_dapm_route),
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GFP_KERNEL);
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if (!priv->dapm_routes)
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return -ENOMEM;
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for (i = 0; i < num_dai; i++) {
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ret = of_parse_phandle_with_args(audmix_np, "dais", NULL, i,
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&args);
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if (ret < 0) {
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dev_err(&pdev->dev, "of_parse_phandle_with_args failed\n");
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return ret;
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}
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cpu_pdev = of_find_device_by_node(args.np);
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if (!cpu_pdev) {
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dev_err(&pdev->dev, "failed to find SAI platform device\n");
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return -EINVAL;
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}
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dai_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s%s",
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fe_name_pref, args.np->full_name + 1);
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dev_info(pdev->dev.parent, "DAI FE name:%s\n", dai_name);
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if (i == 0) {
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out_cpu_np = args.np;
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capture_dai_name =
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devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s %s",
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dai_name, "CPU-Capture");
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}
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priv->dai[i].name = dai_name;
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priv->dai[i].stream_name = "HiFi-AUDMIX-FE";
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priv->dai[i].codec_dai_name = "snd-soc-dummy-dai";
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priv->dai[i].codec_name = "snd-soc-dummy";
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priv->dai[i].cpu_of_node = args.np;
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priv->dai[i].cpu_dai_name = dev_name(&cpu_pdev->dev);
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priv->dai[i].platform_of_node = args.np;
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priv->dai[i].dynamic = 1;
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priv->dai[i].dpcm_playback = 1;
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priv->dai[i].dpcm_capture = (i == 0 ? 1 : 0);
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priv->dai[i].ignore_pmdown_time = 1;
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priv->dai[i].ops = &imx_audmix_fe_ops;
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/* Add AUDMIX Backend */
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be_name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
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"audmix-%d", i);
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be_pb = devm_kasprintf(&pdev->dev, GFP_KERNEL,
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"AUDMIX-Playback-%d", i);
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be_cp = devm_kasprintf(&pdev->dev, GFP_KERNEL,
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"AUDMIX-Capture-%d", i);
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priv->dai[num_dai + i].name = be_name;
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priv->dai[num_dai + i].codec_dai_name = "snd-soc-dummy-dai";
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priv->dai[num_dai + i].codec_name = "snd-soc-dummy";
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priv->dai[num_dai + i].cpu_of_node = audmix_np;
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priv->dai[num_dai + i].cpu_dai_name = be_name;
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priv->dai[num_dai + i].platform_name = "snd-soc-dummy";
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priv->dai[num_dai + i].no_pcm = 1;
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priv->dai[num_dai + i].dpcm_playback = 1;
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priv->dai[num_dai + i].dpcm_capture = 1;
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priv->dai[num_dai + i].ignore_pmdown_time = 1;
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priv->dai[num_dai + i].ops = &imx_audmix_be_ops;
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priv->dai_conf[i].of_node = args.np;
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priv->dai_conf[i].name_prefix = dai_name;
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priv->dapm_routes[i].source =
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devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s %s",
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dai_name, "CPU-Playback");
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priv->dapm_routes[i].sink = be_pb;
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priv->dapm_routes[num_dai + i].source = be_pb;
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priv->dapm_routes[num_dai + i].sink = be_cp;
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priv->dapm_routes[2 * num_dai + i].source = be_cp;
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priv->dapm_routes[2 * num_dai + i].sink = capture_dai_name;
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}
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cpu_pdev = of_find_device_by_node(out_cpu_np);
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if (!cpu_pdev) {
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dev_err(&pdev->dev, "failed to find SAI platform device\n");
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return -EINVAL;
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}
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priv->cpu_mclk = devm_clk_get(&cpu_pdev->dev, "mclk1");
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if (IS_ERR(priv->cpu_mclk)) {
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ret = PTR_ERR(priv->cpu_mclk);
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dev_err(&cpu_pdev->dev, "failed to get DAI mclk1: %d\n", ret);
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return -EINVAL;
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}
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priv->audmix_pdev = audmix_pdev;
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priv->out_pdev = cpu_pdev;
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priv->card.dai_link = priv->dai;
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priv->card.num_links = priv->num_dai;
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priv->card.codec_conf = priv->dai_conf;
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priv->card.num_configs = priv->num_dai_conf;
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priv->card.dapm_routes = priv->dapm_routes;
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priv->card.num_dapm_routes = priv->num_dapm_routes;
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priv->card.dev = pdev->dev.parent;
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priv->card.owner = THIS_MODULE;
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priv->card.name = "imx-audmix";
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platform_set_drvdata(pdev, &priv->card);
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snd_soc_card_set_drvdata(&priv->card, priv);
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ret = devm_snd_soc_register_card(pdev->dev.parent, &priv->card);
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if (ret) {
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dev_err(&pdev->dev, "snd_soc_register_card failed\n");
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return ret;
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}
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return ret;
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}
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static struct platform_driver imx_audmix_driver = {
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.probe = imx_audmix_probe,
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.driver = {
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.name = "imx-audmix",
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.pm = &snd_soc_pm_ops,
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},
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};
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module_platform_driver(imx_audmix_driver);
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MODULE_DESCRIPTION("NXP AUDMIX ASoC machine driver");
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MODULE_AUTHOR("Viorel Suman <viorel.suman@nxp.com>");
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MODULE_ALIAS("platform:imx-audmix");
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MODULE_LICENSE("GPL v2");
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