| 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | // |
| 3 | // wm1133-ev1.c - Audio for WM1133-EV1 on i.MX31ADS |
| 4 | // |
| 5 | // Copyright (c) 2010 Wolfson Microelectronics plc |
| 6 | // Author: Mark Brown <broonie@opensource.wolfsonmicro.com> |
| 7 | // |
| 8 | // Based on an earlier driver for the same hardware by Liam Girdwood. |
| 9 | |
| 10 | #include <linux/platform_device.h> |
| 11 | #include <linux/clk.h> |
| 12 | #include <linux/module.h> |
| 13 | #include <sound/core.h> |
| 14 | #include <sound/jack.h> |
| 15 | #include <sound/pcm.h> |
| 16 | #include <sound/pcm_params.h> |
| 17 | #include <sound/soc.h> |
| 18 | |
| 19 | #include "imx-ssi.h" |
| 20 | #include "../codecs/wm8350.h" |
| 21 | #include "imx-audmux.h" |
| 22 | |
| 23 | /* There is a silicon mic on the board optionally connected via a solder pad |
| 24 | * SP1. Define this to enable it. |
| 25 | */ |
| 26 | #undef USE_SIMIC |
| 27 | |
| 28 | struct _wm8350_audio { |
| 29 | unsigned int channels; |
| 30 | snd_pcm_format_t format; |
| 31 | unsigned int rate; |
| 32 | unsigned int sysclk; |
| 33 | unsigned int bclkdiv; |
| 34 | unsigned int clkdiv; |
| 35 | unsigned int lr_rate; |
| 36 | }; |
| 37 | |
| 38 | /* in order of power consumption per rate (lowest first) */ |
| 39 | static const struct _wm8350_audio wm8350_audio[] = { |
| 40 | /* 16bit mono modes */ |
| 41 | {1, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000 >> 1, |
| 42 | WM8350_BCLK_DIV_48, WM8350_DACDIV_3, 16,}, |
| 43 | |
| 44 | /* 16 bit stereo modes */ |
| 45 | {2, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000, |
| 46 | WM8350_BCLK_DIV_48, WM8350_DACDIV_6, 32,}, |
| 47 | {2, SNDRV_PCM_FORMAT_S16_LE, 16000, 12288000, |
| 48 | WM8350_BCLK_DIV_24, WM8350_DACDIV_3, 32,}, |
| 49 | {2, SNDRV_PCM_FORMAT_S16_LE, 32000, 12288000, |
| 50 | WM8350_BCLK_DIV_12, WM8350_DACDIV_1_5, 32,}, |
| 51 | {2, SNDRV_PCM_FORMAT_S16_LE, 48000, 12288000, |
| 52 | WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,}, |
| 53 | {2, SNDRV_PCM_FORMAT_S16_LE, 96000, 24576000, |
| 54 | WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,}, |
| 55 | {2, SNDRV_PCM_FORMAT_S16_LE, 11025, 11289600, |
| 56 | WM8350_BCLK_DIV_32, WM8350_DACDIV_4, 32,}, |
| 57 | {2, SNDRV_PCM_FORMAT_S16_LE, 22050, 11289600, |
| 58 | WM8350_BCLK_DIV_16, WM8350_DACDIV_2, 32,}, |
| 59 | {2, SNDRV_PCM_FORMAT_S16_LE, 44100, 11289600, |
| 60 | WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,}, |
| 61 | {2, SNDRV_PCM_FORMAT_S16_LE, 88200, 22579200, |
| 62 | WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,}, |
| 63 | |
| 64 | /* 24bit stereo modes */ |
| 65 | {2, SNDRV_PCM_FORMAT_S24_LE, 48000, 12288000, |
| 66 | WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,}, |
| 67 | {2, SNDRV_PCM_FORMAT_S24_LE, 96000, 24576000, |
| 68 | WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,}, |
| 69 | {2, SNDRV_PCM_FORMAT_S24_LE, 44100, 11289600, |
| 70 | WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,}, |
| 71 | {2, SNDRV_PCM_FORMAT_S24_LE, 88200, 22579200, |
| 72 | WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,}, |
| 73 | }; |
| 74 | |
| 75 | static int wm1133_ev1_hw_params(struct snd_pcm_substream *substream, |
| 76 | struct snd_pcm_hw_params *params) |
| 77 | { |
| 78 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 79 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 80 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 81 | int i, found = 0; |
| 82 | snd_pcm_format_t format = params_format(params); |
| 83 | unsigned int rate = params_rate(params); |
| 84 | unsigned int channels = params_channels(params); |
| 85 | |
| 86 | /* find the correct audio parameters */ |
| 87 | for (i = 0; i < ARRAY_SIZE(wm8350_audio); i++) { |
| 88 | if (rate == wm8350_audio[i].rate && |
| 89 | format == wm8350_audio[i].format && |
| 90 | channels == wm8350_audio[i].channels) { |
| 91 | found = 1; |
| 92 | break; |
| 93 | } |
| 94 | } |
| 95 | if (!found) |
| 96 | return -EINVAL; |
| 97 | |
| 98 | /* codec FLL input is 14.75 MHz from MCLK */ |
| 99 | snd_soc_dai_set_pll(codec_dai, 0, 0, 14750000, wm8350_audio[i].sysclk); |
| 100 | |
| 101 | /* TODO: The SSI driver should figure this out for us */ |
| 102 | switch (channels) { |
| 103 | case 2: |
| 104 | snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 0); |
| 105 | break; |
| 106 | case 1: |
| 107 | snd_soc_dai_set_tdm_slot(cpu_dai, 0x1, 0x1, 1, 0); |
| 108 | break; |
| 109 | default: |
| 110 | return -EINVAL; |
| 111 | } |
| 112 | |
| 113 | /* set MCLK as the codec system clock for DAC and ADC */ |
| 114 | snd_soc_dai_set_sysclk(codec_dai, WM8350_MCLK_SEL_PLL_MCLK, |
| 115 | wm8350_audio[i].sysclk, SND_SOC_CLOCK_IN); |
| 116 | |
| 117 | /* set codec BCLK division for sample rate */ |
| 118 | snd_soc_dai_set_clkdiv(codec_dai, WM8350_BCLK_CLKDIV, |
| 119 | wm8350_audio[i].bclkdiv); |
| 120 | |
| 121 | /* DAI is synchronous and clocked with DAC LRCLK & ADC LRC */ |
| 122 | snd_soc_dai_set_clkdiv(codec_dai, |
| 123 | WM8350_DACLR_CLKDIV, wm8350_audio[i].lr_rate); |
| 124 | snd_soc_dai_set_clkdiv(codec_dai, |
| 125 | WM8350_ADCLR_CLKDIV, wm8350_audio[i].lr_rate); |
| 126 | |
| 127 | /* now configure DAC and ADC clocks */ |
| 128 | snd_soc_dai_set_clkdiv(codec_dai, |
| 129 | WM8350_DAC_CLKDIV, wm8350_audio[i].clkdiv); |
| 130 | |
| 131 | snd_soc_dai_set_clkdiv(codec_dai, |
| 132 | WM8350_ADC_CLKDIV, wm8350_audio[i].clkdiv); |
| 133 | |
| 134 | return 0; |
| 135 | } |
| 136 | |
| 137 | static const struct snd_soc_ops wm1133_ev1_ops = { |
| 138 | .hw_params = wm1133_ev1_hw_params, |
| 139 | }; |
| 140 | |
| 141 | static const struct snd_soc_dapm_widget wm1133_ev1_widgets[] = { |
| 142 | #ifdef USE_SIMIC |
| 143 | SND_SOC_DAPM_MIC("SiMIC", NULL), |
| 144 | #endif |
| 145 | SND_SOC_DAPM_MIC("Mic1 Jack", NULL), |
| 146 | SND_SOC_DAPM_MIC("Mic2 Jack", NULL), |
| 147 | SND_SOC_DAPM_LINE("Line In Jack", NULL), |
| 148 | SND_SOC_DAPM_LINE("Line Out Jack", NULL), |
| 149 | SND_SOC_DAPM_HP("Headphone Jack", NULL), |
| 150 | }; |
| 151 | |
| 152 | /* imx32ads soc_card audio map */ |
| 153 | static const struct snd_soc_dapm_route wm1133_ev1_map[] = { |
| 154 | |
| 155 | #ifdef USE_SIMIC |
| 156 | /* SiMIC --> IN1LN (with automatic bias) via SP1 */ |
| 157 | { "IN1LN", NULL, "Mic Bias" }, |
| 158 | { "Mic Bias", NULL, "SiMIC" }, |
| 159 | #endif |
| 160 | |
| 161 | /* Mic 1 Jack --> IN1LN and IN1LP (with automatic bias) */ |
| 162 | { "IN1LN", NULL, "Mic Bias" }, |
| 163 | { "IN1LP", NULL, "Mic1 Jack" }, |
| 164 | { "Mic Bias", NULL, "Mic1 Jack" }, |
| 165 | |
| 166 | /* Mic 2 Jack --> IN1RN and IN1RP (with automatic bias) */ |
| 167 | { "IN1RN", NULL, "Mic Bias" }, |
| 168 | { "IN1RP", NULL, "Mic2 Jack" }, |
| 169 | { "Mic Bias", NULL, "Mic2 Jack" }, |
| 170 | |
| 171 | /* Line in Jack --> AUX (L+R) */ |
| 172 | { "IN3R", NULL, "Line In Jack" }, |
| 173 | { "IN3L", NULL, "Line In Jack" }, |
| 174 | |
| 175 | /* Out1 --> Headphone Jack */ |
| 176 | { "Headphone Jack", NULL, "OUT1R" }, |
| 177 | { "Headphone Jack", NULL, "OUT1L" }, |
| 178 | |
| 179 | /* Out1 --> Line Out Jack */ |
| 180 | { "Line Out Jack", NULL, "OUT2R" }, |
| 181 | { "Line Out Jack", NULL, "OUT2L" }, |
| 182 | }; |
| 183 | |
| 184 | static struct snd_soc_jack hp_jack; |
| 185 | |
| 186 | static struct snd_soc_jack_pin hp_jack_pins[] = { |
| 187 | { .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE }, |
| 188 | }; |
| 189 | |
| 190 | static struct snd_soc_jack mic_jack; |
| 191 | |
| 192 | static struct snd_soc_jack_pin mic_jack_pins[] = { |
| 193 | { .pin = "Mic1 Jack", .mask = SND_JACK_MICROPHONE }, |
| 194 | { .pin = "Mic2 Jack", .mask = SND_JACK_MICROPHONE }, |
| 195 | }; |
| 196 | |
| 197 | static int wm1133_ev1_init(struct snd_soc_pcm_runtime *rtd) |
| 198 | { |
| 199 | struct snd_soc_component *component = rtd->codec_dai->component; |
| 200 | |
| 201 | /* Headphone jack detection */ |
| 202 | snd_soc_card_jack_new(rtd->card, "Headphone", SND_JACK_HEADPHONE, |
| 203 | &hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins)); |
| 204 | wm8350_hp_jack_detect(component, WM8350_JDR, &hp_jack, SND_JACK_HEADPHONE); |
| 205 | |
| 206 | /* Microphone jack detection */ |
| 207 | snd_soc_card_jack_new(rtd->card, "Microphone", |
| 208 | SND_JACK_MICROPHONE | SND_JACK_BTN_0, &mic_jack, |
| 209 | mic_jack_pins, ARRAY_SIZE(mic_jack_pins)); |
| 210 | wm8350_mic_jack_detect(component, &mic_jack, SND_JACK_MICROPHONE, |
| 211 | SND_JACK_BTN_0); |
| 212 | |
| 213 | snd_soc_dapm_force_enable_pin(&rtd->card->dapm, "Mic Bias"); |
| 214 | |
| 215 | return 0; |
| 216 | } |
| 217 | |
| 218 | |
| 219 | static struct snd_soc_dai_link wm1133_ev1_dai = { |
| 220 | .name = "WM1133-EV1", |
| 221 | .stream_name = "Audio", |
| 222 | .cpu_dai_name = "imx-ssi.0", |
| 223 | .codec_dai_name = "wm8350-hifi", |
| 224 | .platform_name = "imx-ssi.0", |
| 225 | .codec_name = "wm8350-codec.0-0x1a", |
| 226 | .init = wm1133_ev1_init, |
| 227 | .ops = &wm1133_ev1_ops, |
| 228 | .symmetric_rates = 1, |
| 229 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| 230 | SND_SOC_DAIFMT_CBM_CFM, |
| 231 | }; |
| 232 | |
| 233 | static struct snd_soc_card wm1133_ev1 = { |
| 234 | .name = "WM1133-EV1", |
| 235 | .owner = THIS_MODULE, |
| 236 | .dai_link = &wm1133_ev1_dai, |
| 237 | .num_links = 1, |
| 238 | |
| 239 | .dapm_widgets = wm1133_ev1_widgets, |
| 240 | .num_dapm_widgets = ARRAY_SIZE(wm1133_ev1_widgets), |
| 241 | .dapm_routes = wm1133_ev1_map, |
| 242 | .num_dapm_routes = ARRAY_SIZE(wm1133_ev1_map), |
| 243 | }; |
| 244 | |
| 245 | static struct platform_device *wm1133_ev1_snd_device; |
| 246 | |
| 247 | static int __init wm1133_ev1_audio_init(void) |
| 248 | { |
| 249 | int ret; |
| 250 | unsigned int ptcr, pdcr; |
| 251 | |
| 252 | /* SSI0 mastered by port 5 */ |
| 253 | ptcr = IMX_AUDMUX_V2_PTCR_SYN | |
| 254 | IMX_AUDMUX_V2_PTCR_TFSDIR | |
| 255 | IMX_AUDMUX_V2_PTCR_TFSEL(MX31_AUDMUX_PORT5_SSI_PINS_5) | |
| 256 | IMX_AUDMUX_V2_PTCR_TCLKDIR | |
| 257 | IMX_AUDMUX_V2_PTCR_TCSEL(MX31_AUDMUX_PORT5_SSI_PINS_5); |
| 258 | pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT5_SSI_PINS_5); |
| 259 | imx_audmux_v2_configure_port(MX31_AUDMUX_PORT1_SSI0, ptcr, pdcr); |
| 260 | |
| 261 | ptcr = IMX_AUDMUX_V2_PTCR_SYN; |
| 262 | pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT1_SSI0); |
| 263 | imx_audmux_v2_configure_port(MX31_AUDMUX_PORT5_SSI_PINS_5, ptcr, pdcr); |
| 264 | |
| 265 | wm1133_ev1_snd_device = platform_device_alloc("soc-audio", -1); |
| 266 | if (!wm1133_ev1_snd_device) |
| 267 | return -ENOMEM; |
| 268 | |
| 269 | platform_set_drvdata(wm1133_ev1_snd_device, &wm1133_ev1); |
| 270 | ret = platform_device_add(wm1133_ev1_snd_device); |
| 271 | |
| 272 | if (ret) |
| 273 | platform_device_put(wm1133_ev1_snd_device); |
| 274 | |
| 275 | return ret; |
| 276 | } |
| 277 | module_init(wm1133_ev1_audio_init); |
| 278 | |
| 279 | static void __exit wm1133_ev1_audio_exit(void) |
| 280 | { |
| 281 | platform_device_unregister(wm1133_ev1_snd_device); |
| 282 | } |
| 283 | module_exit(wm1133_ev1_audio_exit); |
| 284 | |
| 285 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); |
| 286 | MODULE_DESCRIPTION("Audio for WM1133-EV1 on i.MX31ADS"); |
| 287 | MODULE_LICENSE("GPL"); |