MLK-16130-2: ASoC: fsl: add machine driver for cadence hdmi
The machine driver will call the API which is provided by the cadence to configure the audio features. Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com>pull/10/head
Shengjiu Wang
Jason Liu
parent
bde2b1ffa5
commit
6636b2f4b6
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@ -0,0 +1,17 @@
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Freescale i.MX audio complex with Cadence HDMI
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Required properties:
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- compatible : "fsl,imx-audio-cdnhdmi"
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- model : The user-visible name of this sound complex
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- audio-cpu : The phandle of the i.MX SAI controller
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- video-mode : hdmi video mode
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Example:
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sound-hdmi {
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compatible = "fsl,imx-audio-cdnhdmi";
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model = "imx-audio-hdmi";
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audio-cpu = <&sai4>;
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video-mode = <95>; /* #16: 1920x1080p@60HZ 16:9 */
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/* #95: 3840x2160p@30Hz 16:9 */
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};
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@ -478,6 +478,17 @@ config SND_SOC_IMX_AMIX
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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 AMIX.
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config SND_SOC_IMX_CDNHDMI
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tristate "SoC Audio support for i.MX boards with CDN HDMI port"
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depends on FB_MX8_HDMI
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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_HDMI_CODEC
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help
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SoC Audio support for i.MX boards with CDN HDMI audio
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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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IMX CDN HDMI.
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endif # SND_IMX_SOC
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endmenu
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@ -80,6 +80,7 @@ snd-soc-imx-mc13783-objs := imx-mc13783.o
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snd-soc-imx-mqs-objs := imx-mqs.o
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snd-soc-imx-si476x-objs := imx-si476x.o
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snd-soc-imx-hdmi-objs := imx-hdmi.o
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snd-soc-imx-cdnhdmi-objs := imx-cdnhdmi.o
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snd-soc-imx-rpmsg-objs := imx-rpmsg.o
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snd-soc-imx-amix-objs := imx-amix.o
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@ -103,5 +104,6 @@ obj-$(CONFIG_SND_SOC_IMX_MQS) += snd-soc-imx-mqs.o
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obj-$(CONFIG_SND_SOC_IMX_SI476X) += snd-soc-imx-si476x.o
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obj-$(CONFIG_SND_SOC_IMX_HDMI) += snd-soc-imx-hdmi.o
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obj-$(CONFIG_SND_SOC_IMX_AMIX) += snd-soc-imx-amix.o
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obj-$(CONFIG_SND_SOC_IMX_CDNHDMI) += snd-soc-imx-cdnhdmi.o
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AFLAGS_hdmi_pcm.o := -march=armv7-a -mtune=cortex-a9 -mfpu=neon -mfloat-abi=softfp
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@ -0,0 +1,265 @@
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/*
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* Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
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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/i2c.h>
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#include <linux/of_gpio.h>
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#include <linux/slab.h>
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#include <linux/gpio.h>
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#include <linux/clk.h>
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#include <sound/soc.h>
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#include <sound/jack.h>
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#include <sound/control.h>
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#include <sound/pcm_params.h>
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#include <sound/soc-dapm.h>
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#include "../../../drivers/video/fbdev/mxc/cdn_hdp/API_General.h"
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#include "../../../drivers/video/fbdev/mxc/cdn_hdp/API_Audio.h"
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#define SUPPORT_RATE_NUM 10
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#define SUPPORT_CHANNEL_NUM 10
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struct imx_cdnhdmi_data {
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struct snd_soc_dai_link dai;
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struct snd_soc_card card;
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int vmode_index;
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};
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static int imx_cdnhdmi_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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static struct snd_pcm_hw_constraint_list constraint_channels;
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static u32 support_rates[SUPPORT_RATE_NUM];
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static u32 support_channels[SUPPORT_CHANNEL_NUM];
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int ret;
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support_rates[0] = 48000;
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support_rates[1] = 96000;
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support_rates[2] = 32000;
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support_rates[3] = 192000;
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constraint_rates.list = support_rates;
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constraint_rates.count = 4;
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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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support_channels[0] = 2;
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support_channels[1] = 4;
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support_channels[2] = 8;
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constraint_channels.list = support_channels;
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constraint_channels.count = 3;
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ret = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
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&constraint_channels);
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if (ret)
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return ret;
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return 0;
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}
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static int imx_cdnhdmi_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 snd_soc_dai *cpu_dai = rtd->cpu_dai;
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struct snd_soc_card *card = rtd->card;
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struct imx_cdnhdmi_data *data = snd_soc_card_get_drvdata(card);
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struct device *dev = card->dev;
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unsigned int sample_rate = params_rate(params);
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unsigned int channels = params_channels(params);
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unsigned int width = params_physical_width(params);
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AUDIO_FREQ freq;
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AUDIO_WIDTH bits;
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int ret;
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int ncts_n;
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/* set cpu DAI configuration */
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ret = snd_soc_dai_set_fmt(cpu_dai,
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SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBS_CFS);
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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(cpu_dai, 0, 0, SND_SOC_CLOCK_OUT);
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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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ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0, 0, 2, 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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switch (sample_rate) {
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case 32000:
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freq = AUDIO_FREQ_32;
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ncts_n = data->vmode_index == 95 ? 3072 : 4096;
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break;
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case 44100:
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freq = AUDIO_FREQ_44_1;
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ncts_n = data->vmode_index == 95 ? 4704 : 6272;
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break;
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case 48000:
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freq = AUDIO_FREQ_48;
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ncts_n = data->vmode_index == 95 ? 5120 : 6144;
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break;
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case 88200:
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freq = AUDIO_FREQ_88_2;
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ncts_n = data->vmode_index == 95 ? 9408 : 12544;
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break;
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case 96000:
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freq = AUDIO_FREQ_96;
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ncts_n = data->vmode_index == 95 ? 10240 : 12288;
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break;
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case 176400:
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freq = AUDIO_FREQ_176_4;
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ncts_n = data->vmode_index == 95 ? 18816 : 25088;
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break;
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case 192000:
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freq = AUDIO_FREQ_192;
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ncts_n = data->vmode_index == 95 ? 20480 : 24576;
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break;
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default:
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return -EINVAL;
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}
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switch (width) {
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case 16:
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bits = AUDIO_WIDTH_16;
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break;
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case 24:
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bits = AUDIO_WIDTH_24;
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break;
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case 32:
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bits = AUDIO_WIDTH_32;
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break;
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default:
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return -EINVAL;
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}
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CDN_API_AudioOff_blocking(AUDIO_TYPE_I2S);
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CDN_API_AudioAutoConfig_blocking(AUDIO_TYPE_I2S,
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channels,
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freq,
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0,
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bits,
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CDN_HDMITX_KIRAN,
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ncts_n,
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AUDIO_MUTE_MODE_UNMUTE);
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return 0;
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}
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static struct snd_soc_ops imx_cdnhdmi_ops = {
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.startup = imx_cdnhdmi_startup,
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.hw_params = imx_cdnhdmi_hw_params,
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};
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static int imx_cdnhdmi_probe(struct platform_device *pdev)
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{
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struct device_node *cpu_np, *cdnhdmi_np = NULL;
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struct platform_device *cpu_pdev;
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struct imx_cdnhdmi_data *data;
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int ret;
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cpu_np = of_parse_phandle(pdev->dev.of_node, "audio-cpu", 0);
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if (!cpu_np) {
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dev_err(&pdev->dev, "cpu dai 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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cpu_pdev = of_find_device_by_node(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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ret = -EINVAL;
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goto fail;
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}
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data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
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if (!data) {
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ret = -ENOMEM;
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goto fail;
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}
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ret = of_property_read_u32(pdev->dev.of_node, "video-mode",
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&data->vmode_index);
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if (ret < 0) {
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ret = -EINVAL;
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goto fail;
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}
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data->dai.name = "imx8 hdmi";
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data->dai.stream_name = "imx8 hdmi";
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data->dai.codec_dai_name = "snd-soc-dummy-dai";
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data->dai.codec_name = "snd-soc-dummy";
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data->dai.cpu_dai_name = dev_name(&cpu_pdev->dev);
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data->dai.platform_of_node = cpu_np;
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data->dai.ops = &imx_cdnhdmi_ops;
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data->dai.playback_only = true;
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data->dai.capture_only = false;
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data->dai.dai_fmt = SND_SOC_DAIFMT_LEFT_J |
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SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBS_CFS;
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data->card.dev = &pdev->dev;
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data->card.owner = THIS_MODULE;
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ret = snd_soc_of_parse_card_name(&data->card, "model");
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if (ret)
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goto fail;
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data->card.num_links = 1;
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data->card.dai_link = &data->dai;
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platform_set_drvdata(pdev, &data->card);
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snd_soc_card_set_drvdata(&data->card, data);
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ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
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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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if (cdnhdmi_np)
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of_node_put(cdnhdmi_np);
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return ret;
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}
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static const struct of_device_id imx_cdnhdmi_dt_ids[] = {
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{ .compatible = "fsl,imx-audio-cdnhdmi", },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, imx_cdnhdmi_dt_ids);
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static struct platform_driver imx_cdnhdmi_driver = {
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.driver = {
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.name = "imx-cdnhdmi",
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.owner = THIS_MODULE,
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.pm = &snd_soc_pm_ops,
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.of_match_table = imx_cdnhdmi_dt_ids,
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},
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.probe = imx_cdnhdmi_probe,
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};
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module_platform_driver(imx_cdnhdmi_driver);
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MODULE_AUTHOR("Freescale Semiconductor, Inc.");
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MODULE_DESCRIPTION("Freescale i.MX hdmi audio ASoC machine driver");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("platform:imx-cdnhdmi");
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