| // SPDX-License-Identifier: GPL-2.0+ |
| // |
| // wm1133-ev1.c - Audio for WM1133-EV1 on i.MX31ADS |
| // |
| // Copyright (c) 2010 Wolfson Microelectronics plc |
| // Author: Mark Brown <broonie@opensource.wolfsonmicro.com> |
| // |
| // Based on an earlier driver for the same hardware by Liam Girdwood. |
| |
| #include <linux/platform_device.h> |
| #include <linux/clk.h> |
| #include <linux/module.h> |
| #include <sound/core.h> |
| #include <sound/jack.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/soc.h> |
| |
| #include "imx-ssi.h" |
| #include "../codecs/wm8350.h" |
| #include "imx-audmux.h" |
| |
| /* There is a silicon mic on the board optionally connected via a solder pad |
| * SP1. Define this to enable it. |
| */ |
| #undef USE_SIMIC |
| |
| struct _wm8350_audio { |
| unsigned int channels; |
| snd_pcm_format_t format; |
| unsigned int rate; |
| unsigned int sysclk; |
| unsigned int bclkdiv; |
| unsigned int clkdiv; |
| unsigned int lr_rate; |
| }; |
| |
| /* in order of power consumption per rate (lowest first) */ |
| static const struct _wm8350_audio wm8350_audio[] = { |
| /* 16bit mono modes */ |
| {1, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000 >> 1, |
| WM8350_BCLK_DIV_48, WM8350_DACDIV_3, 16,}, |
| |
| /* 16 bit stereo modes */ |
| {2, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000, |
| WM8350_BCLK_DIV_48, WM8350_DACDIV_6, 32,}, |
| {2, SNDRV_PCM_FORMAT_S16_LE, 16000, 12288000, |
| WM8350_BCLK_DIV_24, WM8350_DACDIV_3, 32,}, |
| {2, SNDRV_PCM_FORMAT_S16_LE, 32000, 12288000, |
| WM8350_BCLK_DIV_12, WM8350_DACDIV_1_5, 32,}, |
| {2, SNDRV_PCM_FORMAT_S16_LE, 48000, 12288000, |
| WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,}, |
| {2, SNDRV_PCM_FORMAT_S16_LE, 96000, 24576000, |
| WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,}, |
| {2, SNDRV_PCM_FORMAT_S16_LE, 11025, 11289600, |
| WM8350_BCLK_DIV_32, WM8350_DACDIV_4, 32,}, |
| {2, SNDRV_PCM_FORMAT_S16_LE, 22050, 11289600, |
| WM8350_BCLK_DIV_16, WM8350_DACDIV_2, 32,}, |
| {2, SNDRV_PCM_FORMAT_S16_LE, 44100, 11289600, |
| WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,}, |
| {2, SNDRV_PCM_FORMAT_S16_LE, 88200, 22579200, |
| WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,}, |
| |
| /* 24bit stereo modes */ |
| {2, SNDRV_PCM_FORMAT_S24_LE, 48000, 12288000, |
| WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,}, |
| {2, SNDRV_PCM_FORMAT_S24_LE, 96000, 24576000, |
| WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,}, |
| {2, SNDRV_PCM_FORMAT_S24_LE, 44100, 11289600, |
| WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,}, |
| {2, SNDRV_PCM_FORMAT_S24_LE, 88200, 22579200, |
| WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,}, |
| }; |
| |
| static int wm1133_ev1_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| int i, found = 0; |
| snd_pcm_format_t format = params_format(params); |
| unsigned int rate = params_rate(params); |
| unsigned int channels = params_channels(params); |
| |
| /* find the correct audio parameters */ |
| for (i = 0; i < ARRAY_SIZE(wm8350_audio); i++) { |
| if (rate == wm8350_audio[i].rate && |
| format == wm8350_audio[i].format && |
| channels == wm8350_audio[i].channels) { |
| found = 1; |
| break; |
| } |
| } |
| if (!found) |
| return -EINVAL; |
| |
| /* codec FLL input is 14.75 MHz from MCLK */ |
| snd_soc_dai_set_pll(codec_dai, 0, 0, 14750000, wm8350_audio[i].sysclk); |
| |
| /* TODO: The SSI driver should figure this out for us */ |
| switch (channels) { |
| case 2: |
| snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 0); |
| break; |
| case 1: |
| snd_soc_dai_set_tdm_slot(cpu_dai, 0x1, 0x1, 1, 0); |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| /* set MCLK as the codec system clock for DAC and ADC */ |
| snd_soc_dai_set_sysclk(codec_dai, WM8350_MCLK_SEL_PLL_MCLK, |
| wm8350_audio[i].sysclk, SND_SOC_CLOCK_IN); |
| |
| /* set codec BCLK division for sample rate */ |
| snd_soc_dai_set_clkdiv(codec_dai, WM8350_BCLK_CLKDIV, |
| wm8350_audio[i].bclkdiv); |
| |
| /* DAI is synchronous and clocked with DAC LRCLK & ADC LRC */ |
| snd_soc_dai_set_clkdiv(codec_dai, |
| WM8350_DACLR_CLKDIV, wm8350_audio[i].lr_rate); |
| snd_soc_dai_set_clkdiv(codec_dai, |
| WM8350_ADCLR_CLKDIV, wm8350_audio[i].lr_rate); |
| |
| /* now configure DAC and ADC clocks */ |
| snd_soc_dai_set_clkdiv(codec_dai, |
| WM8350_DAC_CLKDIV, wm8350_audio[i].clkdiv); |
| |
| snd_soc_dai_set_clkdiv(codec_dai, |
| WM8350_ADC_CLKDIV, wm8350_audio[i].clkdiv); |
| |
| return 0; |
| } |
| |
| static const struct snd_soc_ops wm1133_ev1_ops = { |
| .hw_params = wm1133_ev1_hw_params, |
| }; |
| |
| static const struct snd_soc_dapm_widget wm1133_ev1_widgets[] = { |
| #ifdef USE_SIMIC |
| SND_SOC_DAPM_MIC("SiMIC", NULL), |
| #endif |
| SND_SOC_DAPM_MIC("Mic1 Jack", NULL), |
| SND_SOC_DAPM_MIC("Mic2 Jack", NULL), |
| SND_SOC_DAPM_LINE("Line In Jack", NULL), |
| SND_SOC_DAPM_LINE("Line Out Jack", NULL), |
| SND_SOC_DAPM_HP("Headphone Jack", NULL), |
| }; |
| |
| /* imx32ads soc_card audio map */ |
| static const struct snd_soc_dapm_route wm1133_ev1_map[] = { |
| |
| #ifdef USE_SIMIC |
| /* SiMIC --> IN1LN (with automatic bias) via SP1 */ |
| { "IN1LN", NULL, "Mic Bias" }, |
| { "Mic Bias", NULL, "SiMIC" }, |
| #endif |
| |
| /* Mic 1 Jack --> IN1LN and IN1LP (with automatic bias) */ |
| { "IN1LN", NULL, "Mic Bias" }, |
| { "IN1LP", NULL, "Mic1 Jack" }, |
| { "Mic Bias", NULL, "Mic1 Jack" }, |
| |
| /* Mic 2 Jack --> IN1RN and IN1RP (with automatic bias) */ |
| { "IN1RN", NULL, "Mic Bias" }, |
| { "IN1RP", NULL, "Mic2 Jack" }, |
| { "Mic Bias", NULL, "Mic2 Jack" }, |
| |
| /* Line in Jack --> AUX (L+R) */ |
| { "IN3R", NULL, "Line In Jack" }, |
| { "IN3L", NULL, "Line In Jack" }, |
| |
| /* Out1 --> Headphone Jack */ |
| { "Headphone Jack", NULL, "OUT1R" }, |
| { "Headphone Jack", NULL, "OUT1L" }, |
| |
| /* Out1 --> Line Out Jack */ |
| { "Line Out Jack", NULL, "OUT2R" }, |
| { "Line Out Jack", NULL, "OUT2L" }, |
| }; |
| |
| static struct snd_soc_jack hp_jack; |
| |
| static struct snd_soc_jack_pin hp_jack_pins[] = { |
| { .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE }, |
| }; |
| |
| static struct snd_soc_jack mic_jack; |
| |
| static struct snd_soc_jack_pin mic_jack_pins[] = { |
| { .pin = "Mic1 Jack", .mask = SND_JACK_MICROPHONE }, |
| { .pin = "Mic2 Jack", .mask = SND_JACK_MICROPHONE }, |
| }; |
| |
| static int wm1133_ev1_init(struct snd_soc_pcm_runtime *rtd) |
| { |
| struct snd_soc_component *component = rtd->codec_dai->component; |
| |
| /* Headphone jack detection */ |
| snd_soc_card_jack_new(rtd->card, "Headphone", SND_JACK_HEADPHONE, |
| &hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins)); |
| wm8350_hp_jack_detect(component, WM8350_JDR, &hp_jack, SND_JACK_HEADPHONE); |
| |
| /* Microphone jack detection */ |
| snd_soc_card_jack_new(rtd->card, "Microphone", |
| SND_JACK_MICROPHONE | SND_JACK_BTN_0, &mic_jack, |
| mic_jack_pins, ARRAY_SIZE(mic_jack_pins)); |
| wm8350_mic_jack_detect(component, &mic_jack, SND_JACK_MICROPHONE, |
| SND_JACK_BTN_0); |
| |
| snd_soc_dapm_force_enable_pin(&rtd->card->dapm, "Mic Bias"); |
| |
| return 0; |
| } |
| |
| |
| SND_SOC_DAILINK_DEFS(ev1, |
| DAILINK_COMP_ARRAY(COMP_CPU("imx-ssi.0")), |
| DAILINK_COMP_ARRAY(COMP_CODEC("wm8350-codec.0-0x1a", "wm8350-hifi")), |
| DAILINK_COMP_ARRAY(COMP_PLATFORM("imx-ssi.0"))); |
| |
| static struct snd_soc_dai_link wm1133_ev1_dai = { |
| .name = "WM1133-EV1", |
| .stream_name = "Audio", |
| .init = wm1133_ev1_init, |
| .ops = &wm1133_ev1_ops, |
| .symmetric_rates = 1, |
| .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| SND_SOC_DAIFMT_CBM_CFM, |
| SND_SOC_DAILINK_REG(ev1), |
| }; |
| |
| static struct snd_soc_card wm1133_ev1 = { |
| .name = "WM1133-EV1", |
| .owner = THIS_MODULE, |
| .dai_link = &wm1133_ev1_dai, |
| .num_links = 1, |
| |
| .dapm_widgets = wm1133_ev1_widgets, |
| .num_dapm_widgets = ARRAY_SIZE(wm1133_ev1_widgets), |
| .dapm_routes = wm1133_ev1_map, |
| .num_dapm_routes = ARRAY_SIZE(wm1133_ev1_map), |
| }; |
| |
| static struct platform_device *wm1133_ev1_snd_device; |
| |
| static int __init wm1133_ev1_audio_init(void) |
| { |
| int ret; |
| unsigned int ptcr, pdcr; |
| |
| /* SSI0 mastered by port 5 */ |
| ptcr = IMX_AUDMUX_V2_PTCR_SYN | |
| IMX_AUDMUX_V2_PTCR_TFSDIR | |
| IMX_AUDMUX_V2_PTCR_TFSEL(MX31_AUDMUX_PORT5_SSI_PINS_5) | |
| IMX_AUDMUX_V2_PTCR_TCLKDIR | |
| IMX_AUDMUX_V2_PTCR_TCSEL(MX31_AUDMUX_PORT5_SSI_PINS_5); |
| pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT5_SSI_PINS_5); |
| imx_audmux_v2_configure_port(MX31_AUDMUX_PORT1_SSI0, ptcr, pdcr); |
| |
| ptcr = IMX_AUDMUX_V2_PTCR_SYN; |
| pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT1_SSI0); |
| imx_audmux_v2_configure_port(MX31_AUDMUX_PORT5_SSI_PINS_5, ptcr, pdcr); |
| |
| wm1133_ev1_snd_device = platform_device_alloc("soc-audio", -1); |
| if (!wm1133_ev1_snd_device) |
| return -ENOMEM; |
| |
| platform_set_drvdata(wm1133_ev1_snd_device, &wm1133_ev1); |
| ret = platform_device_add(wm1133_ev1_snd_device); |
| |
| if (ret) |
| platform_device_put(wm1133_ev1_snd_device); |
| |
| return ret; |
| } |
| module_init(wm1133_ev1_audio_init); |
| |
| static void __exit wm1133_ev1_audio_exit(void) |
| { |
| platform_device_unregister(wm1133_ev1_snd_device); |
| } |
| module_exit(wm1133_ev1_audio_exit); |
| |
| MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); |
| MODULE_DESCRIPTION("Audio for WM1133-EV1 on i.MX31ADS"); |
| MODULE_LICENSE("GPL"); |