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211 lines
4.9 KiB
211 lines
4.9 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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// |
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// Copyright (c) 2009 Samsung Electronics Co. Ltd |
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// Author: Jaswinder Singh <[email protected]> |
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#include <linux/module.h> |
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#include <sound/soc.h> |
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#include <sound/pcm_params.h> |
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#include "../codecs/wm8580.h" |
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#include "i2s.h" |
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/* |
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* Default CFG switch settings to use this driver: |
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* |
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* SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On |
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*/ |
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/* SMDK has a 12MHZ crystal attached to WM8580 */ |
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#define SMDK_WM8580_FREQ 12000000 |
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static int smdk_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 = asoc_substream_to_rtd(substream); |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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unsigned int pll_out; |
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int rfs, ret; |
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switch (params_width(params)) { |
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case 8: |
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case 16: |
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break; |
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default: |
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return -EINVAL; |
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} |
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/* The Fvco for WM8580 PLLs must fall within [90,100]MHz. |
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* This criterion can't be met if we request PLL output |
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* as {8000x256, 64000x256, 11025x256}Hz. |
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* As a wayout, we rather change rfs to a minimum value that |
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* results in (params_rate(params) * rfs), and itself, acceptable |
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* to both - the CODEC and the CPU. |
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*/ |
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switch (params_rate(params)) { |
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case 16000: |
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case 22050: |
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case 32000: |
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case 44100: |
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case 48000: |
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case 88200: |
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case 96000: |
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rfs = 256; |
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break; |
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case 64000: |
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rfs = 384; |
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break; |
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case 8000: |
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case 11025: |
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rfs = 512; |
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break; |
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default: |
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return -EINVAL; |
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} |
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pll_out = params_rate(params) * rfs; |
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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, |
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WM8580_CLKSRC_PLLA); |
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if (ret < 0) |
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return ret; |
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ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0, |
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SMDK_WM8580_FREQ, pll_out); |
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if (ret < 0) |
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return ret; |
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ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA, |
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pll_out, SND_SOC_CLOCK_IN); |
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if (ret < 0) |
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return ret; |
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return 0; |
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} |
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/* |
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* SMDK WM8580 DAI operations. |
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*/ |
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static struct snd_soc_ops smdk_ops = { |
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.hw_params = smdk_hw_params, |
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}; |
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/* SMDK Playback widgets */ |
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static const struct snd_soc_dapm_widget smdk_wm8580_dapm_widgets[] = { |
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SND_SOC_DAPM_HP("Front", NULL), |
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SND_SOC_DAPM_HP("Center+Sub", NULL), |
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SND_SOC_DAPM_HP("Rear", NULL), |
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SND_SOC_DAPM_MIC("MicIn", NULL), |
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SND_SOC_DAPM_LINE("LineIn", NULL), |
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}; |
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/* SMDK-PAIFTX connections */ |
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static const struct snd_soc_dapm_route smdk_wm8580_audio_map[] = { |
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/* MicIn feeds AINL */ |
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{"AINL", NULL, "MicIn"}, |
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/* LineIn feeds AINL/R */ |
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{"AINL", NULL, "LineIn"}, |
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{"AINR", NULL, "LineIn"}, |
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/* Front Left/Right are fed VOUT1L/R */ |
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{"Front", NULL, "VOUT1L"}, |
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{"Front", NULL, "VOUT1R"}, |
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/* Center/Sub are fed VOUT2L/R */ |
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{"Center+Sub", NULL, "VOUT2L"}, |
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{"Center+Sub", NULL, "VOUT2R"}, |
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/* Rear Left/Right are fed VOUT3L/R */ |
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{"Rear", NULL, "VOUT3L"}, |
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{"Rear", NULL, "VOUT3R"}, |
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}; |
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static int smdk_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd) |
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{ |
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/* Enabling the microphone requires the fitting of a 0R |
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* resistor to connect the line from the microphone jack. |
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*/ |
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snd_soc_dapm_disable_pin(&rtd->card->dapm, "MicIn"); |
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return 0; |
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} |
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enum { |
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PRI_PLAYBACK = 0, |
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PRI_CAPTURE, |
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}; |
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#define SMDK_DAI_FMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \ |
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SND_SOC_DAIFMT_CBM_CFM) |
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SND_SOC_DAILINK_DEFS(paif_rx, |
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DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.2")), |
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DAILINK_COMP_ARRAY(COMP_CODEC("wm8580.0-001b", "wm8580-hifi-playback")), |
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DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0"))); |
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SND_SOC_DAILINK_DEFS(paif_tx, |
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DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.2")), |
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DAILINK_COMP_ARRAY(COMP_CODEC("wm8580.0-001b", "wm8580-hifi-capture")), |
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DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0"))); |
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static struct snd_soc_dai_link smdk_dai[] = { |
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[PRI_PLAYBACK] = { /* Primary Playback i/f */ |
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.name = "WM8580 PAIF RX", |
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.stream_name = "Playback", |
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.dai_fmt = SMDK_DAI_FMT, |
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.ops = &smdk_ops, |
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SND_SOC_DAILINK_REG(paif_rx), |
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}, |
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[PRI_CAPTURE] = { /* Primary Capture i/f */ |
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.name = "WM8580 PAIF TX", |
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.stream_name = "Capture", |
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.dai_fmt = SMDK_DAI_FMT, |
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.init = smdk_wm8580_init_paiftx, |
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.ops = &smdk_ops, |
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SND_SOC_DAILINK_REG(paif_tx), |
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}, |
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}; |
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static struct snd_soc_card smdk = { |
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.name = "SMDK-I2S", |
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.owner = THIS_MODULE, |
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.dai_link = smdk_dai, |
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.num_links = ARRAY_SIZE(smdk_dai), |
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.dapm_widgets = smdk_wm8580_dapm_widgets, |
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.num_dapm_widgets = ARRAY_SIZE(smdk_wm8580_dapm_widgets), |
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.dapm_routes = smdk_wm8580_audio_map, |
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.num_dapm_routes = ARRAY_SIZE(smdk_wm8580_audio_map), |
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}; |
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static struct platform_device *smdk_snd_device; |
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static int __init smdk_audio_init(void) |
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{ |
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int ret; |
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smdk_snd_device = platform_device_alloc("soc-audio", -1); |
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if (!smdk_snd_device) |
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return -ENOMEM; |
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platform_set_drvdata(smdk_snd_device, &smdk); |
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ret = platform_device_add(smdk_snd_device); |
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if (ret) |
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platform_device_put(smdk_snd_device); |
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return ret; |
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} |
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module_init(smdk_audio_init); |
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static void __exit smdk_audio_exit(void) |
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{ |
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platform_device_unregister(smdk_snd_device); |
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} |
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module_exit(smdk_audio_exit); |
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MODULE_AUTHOR("Jaswinder Singh, [email protected]"); |
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MODULE_DESCRIPTION("ALSA SoC SMDK WM8580"); |
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MODULE_LICENSE("GPL");
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