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sound/soc/s3c24xx/smdk64xx_wm8580.c
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/* * smdk64xx_wm8580.c * * Copyright (c) 2009 Samsung Electronics Co. Ltd * Author: Jaswinder Singh <jassi.brar@samsung.com> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. */ #include <linux/platform_device.h> #include <linux/clk.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> #include <sound/soc-dapm.h> #include "../codecs/wm8580.h" |
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#include "s3c-dma.h" |
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#include "s3c64xx-i2s.h" |
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/* SMDK64XX has a 12MHZ crystal attached to WM8580 */ #define SMDK64XX_WM8580_FREQ 12000000 static int smdk64xx_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 *cpu_dai = rtd->dai->cpu_dai; struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; unsigned int pll_out; int bfs, rfs, ret; switch (params_format(params)) { case SNDRV_PCM_FORMAT_U8: case SNDRV_PCM_FORMAT_S8: bfs = 16; break; case SNDRV_PCM_FORMAT_U16_LE: case SNDRV_PCM_FORMAT_S16_LE: bfs = 32; break; default: return -EINVAL; } /* The Fvco for WM8580 PLLs must fall within [90,100]MHz. * This criterion can't be met if we request PLL output * as {8000x256, 64000x256, 11025x256}Hz. * As a wayout, we rather change rfs to a minimum value that * results in (params_rate(params) * rfs), and itself, acceptable * to both - the CODEC and the CPU. */ switch (params_rate(params)) { case 16000: case 22050: case 32000: case 44100: case 48000: case 88200: case 96000: rfs = 256; break; case 64000: rfs = 384; break; case 8000: case 11025: rfs = 512; break; default: return -EINVAL; } pll_out = params_rate(params) * rfs; /* Set the Codec DAI configuration */ ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); if (ret < 0) return ret; /* Set the AP DAI configuration */ ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); if (ret < 0) return ret; ret = snd_soc_dai_set_sysclk(cpu_dai, S3C64XX_CLKSRC_CDCLK, 0, SND_SOC_CLOCK_IN); if (ret < 0) return ret; /* We use PCLK for basic ops in SoC-Slave mode */ ret = snd_soc_dai_set_sysclk(cpu_dai, S3C64XX_CLKSRC_PCLK, 0, SND_SOC_CLOCK_IN); if (ret < 0) return ret; |
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/* Set WM8580 to drive MCLK from its PLLA */ |
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ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK, WM8580_CLKSRC_PLLA); if (ret < 0) return ret; /* Explicitly set WM8580-DAC to source from MCLK */ ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_DAC_CLKSEL, WM8580_CLKSRC_MCLK); if (ret < 0) return ret; |
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ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0, |
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SMDK64XX_WM8580_FREQ, pll_out); if (ret < 0) return ret; ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_BCLK, bfs); if (ret < 0) return ret; ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_RCLK, rfs); if (ret < 0) return ret; return 0; } /* * SMDK64XX WM8580 DAI operations. */ static struct snd_soc_ops smdk64xx_ops = { .hw_params = smdk64xx_hw_params, }; /* SMDK64xx Playback widgets */ static const struct snd_soc_dapm_widget wm8580_dapm_widgets_pbk[] = { SND_SOC_DAPM_HP("Front-L/R", NULL), SND_SOC_DAPM_HP("Center/Sub", NULL), SND_SOC_DAPM_HP("Rear-L/R", NULL), }; /* SMDK64xx Capture widgets */ static const struct snd_soc_dapm_widget wm8580_dapm_widgets_cpt[] = { SND_SOC_DAPM_MIC("MicIn", NULL), SND_SOC_DAPM_LINE("LineIn", NULL), }; /* SMDK-PAIFTX connections */ static const struct snd_soc_dapm_route audio_map_tx[] = { /* MicIn feeds AINL */ {"AINL", NULL, "MicIn"}, /* LineIn feeds AINL/R */ {"AINL", NULL, "LineIn"}, {"AINR", NULL, "LineIn"}, }; /* SMDK-PAIFRX connections */ static const struct snd_soc_dapm_route audio_map_rx[] = { /* Front Left/Right are fed VOUT1L/R */ {"Front-L/R", NULL, "VOUT1L"}, {"Front-L/R", NULL, "VOUT1R"}, /* Center/Sub are fed VOUT2L/R */ {"Center/Sub", NULL, "VOUT2L"}, {"Center/Sub", NULL, "VOUT2R"}, /* Rear Left/Right are fed VOUT3L/R */ {"Rear-L/R", NULL, "VOUT3L"}, {"Rear-L/R", NULL, "VOUT3R"}, }; static int smdk64xx_wm8580_init_paiftx(struct snd_soc_codec *codec) { /* Add smdk64xx specific Capture widgets */ snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets_cpt, ARRAY_SIZE(wm8580_dapm_widgets_cpt)); /* Set up PAIFTX audio path */ snd_soc_dapm_add_routes(codec, audio_map_tx, ARRAY_SIZE(audio_map_tx)); |
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/* Enabling the microphone requires the fitting of a 0R * resistor to connect the line from the microphone jack. */ snd_soc_dapm_disable_pin(codec, "MicIn"); |
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/* signal a DAPM event */ snd_soc_dapm_sync(codec); return 0; } static int smdk64xx_wm8580_init_paifrx(struct snd_soc_codec *codec) { /* Add smdk64xx specific Playback widgets */ snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets_pbk, ARRAY_SIZE(wm8580_dapm_widgets_pbk)); /* Set up PAIFRX audio path */ snd_soc_dapm_add_routes(codec, audio_map_rx, ARRAY_SIZE(audio_map_rx)); |
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/* signal a DAPM event */ snd_soc_dapm_sync(codec); return 0; } static struct snd_soc_dai_link smdk64xx_dai[] = { { /* Primary Playback i/f */ .name = "WM8580 PAIF RX", .stream_name = "Playback", |
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.cpu_dai = &s3c64xx_i2s_v4_dai, |
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.codec_dai = &wm8580_dai[WM8580_DAI_PAIFRX], .init = smdk64xx_wm8580_init_paifrx, .ops = &smdk64xx_ops, }, { /* Primary Capture i/f */ .name = "WM8580 PAIF TX", .stream_name = "Capture", |
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.cpu_dai = &s3c64xx_i2s_v4_dai, |
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.codec_dai = &wm8580_dai[WM8580_DAI_PAIFTX], .init = smdk64xx_wm8580_init_paiftx, .ops = &smdk64xx_ops, }, }; static struct snd_soc_card smdk64xx = { .name = "smdk64xx", .platform = &s3c24xx_soc_platform, .dai_link = smdk64xx_dai, .num_links = ARRAY_SIZE(smdk64xx_dai), }; static struct snd_soc_device smdk64xx_snd_devdata = { .card = &smdk64xx, .codec_dev = &soc_codec_dev_wm8580, }; static struct platform_device *smdk64xx_snd_device; static int __init smdk64xx_audio_init(void) { int ret; smdk64xx_snd_device = platform_device_alloc("soc-audio", -1); if (!smdk64xx_snd_device) return -ENOMEM; platform_set_drvdata(smdk64xx_snd_device, &smdk64xx_snd_devdata); smdk64xx_snd_devdata.dev = &smdk64xx_snd_device->dev; ret = platform_device_add(smdk64xx_snd_device); if (ret) platform_device_put(smdk64xx_snd_device); return ret; } module_init(smdk64xx_audio_init); MODULE_AUTHOR("Jaswinder Singh, jassi.brar@samsung.com"); MODULE_DESCRIPTION("ALSA SoC SMDK64XX WM8580"); MODULE_LICENSE("GPL"); |