/* * smdk_wm8580.c * * Copyright (c) 2009 Samsung Electronics Co. Ltd * Author: Jaswinder Singh <jassisinghbrar@gmail.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/module.h> #include <sound/soc.h> #include <sound/pcm_params.h> #include <asm/mach-types.h> #include "../codecs/wm8580.h" #include "i2s.h" /* * Default CFG switch settings to use this driver: * * SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On */ /* SMDK has a 12MHZ crystal attached to WM8580 */ #define SMDK_WM8580_FREQ 12000000 static int smdk_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->cpu_dai; struct snd_soc_dai *codec_dai = rtd->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; /* Set WM8580 to drive MCLK from its PLLA */ ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK, WM8580_CLKSRC_PLLA); if (ret < 0) return ret; ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0, SMDK_WM8580_FREQ, pll_out); if (ret < 0) return ret; ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA, pll_out, SND_SOC_CLOCK_IN); if (ret < 0) return ret; return 0; } /* * SMDK WM8580 DAI operations. */ static struct snd_soc_ops smdk_ops = { .hw_params = smdk_hw_params, }; /* SMDK Playback widgets */ static const struct snd_soc_dapm_widget smdk_wm8580_dapm_widgets[] = { SND_SOC_DAPM_HP("Front", NULL), SND_SOC_DAPM_HP("Center+Sub", NULL), SND_SOC_DAPM_HP("Rear", NULL), SND_SOC_DAPM_MIC("MicIn", NULL), SND_SOC_DAPM_LINE("LineIn", NULL), }; /* SMDK-PAIFTX connections */ static const struct snd_soc_dapm_route smdk_wm8580_audio_map[] = { /* MicIn feeds AINL */ {"AINL", NULL, "MicIn"}, /* LineIn feeds AINL/R */ {"AINL", NULL, "LineIn"}, {"AINR", NULL, "LineIn"}, /* Front Left/Right are fed VOUT1L/R */ {"Front", NULL, "VOUT1L"}, {"Front", NULL, "VOUT1R"}, /* Center/Sub are fed VOUT2L/R */ {"Center+Sub", NULL, "VOUT2L"}, {"Center+Sub", NULL, "VOUT2R"}, /* Rear Left/Right are fed VOUT3L/R */ {"Rear", NULL, "VOUT3L"}, {"Rear", NULL, "VOUT3R"}, }; static int smdk_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd) { struct snd_soc_codec *codec = rtd->codec; struct snd_soc_dapm_context *dapm = &codec->dapm; /* Enabling the microphone requires the fitting of a 0R * resistor to connect the line from the microphone jack. */ snd_soc_dapm_disable_pin(dapm, "MicIn"); return 0; } enum { PRI_PLAYBACK = 0, PRI_CAPTURE, SEC_PLAYBACK, }; static struct snd_soc_dai_link smdk_dai[] = { [PRI_PLAYBACK] = { /* Primary Playback i/f */ .name = "WM8580 PAIF RX", .stream_name = "Playback", .cpu_dai_name = "samsung-i2s.0", .codec_dai_name = "wm8580-hifi-playback", .platform_name = "samsung-i2s.0", .codec_name = "wm8580.0-001b", .ops = &smdk_ops, }, [PRI_CAPTURE] = { /* Primary Capture i/f */ .name = "WM8580 PAIF TX", .stream_name = "Capture", .cpu_dai_name = "samsung-i2s.0", .codec_dai_name = "wm8580-hifi-capture", .platform_name = "samsung-i2s.0", .codec_name = "wm8580.0-001b", .init = smdk_wm8580_init_paiftx, .ops = &smdk_ops, }, [SEC_PLAYBACK] = { /* Sec_Fifo Playback i/f */ .name = "Sec_FIFO TX", .stream_name = "Playback", .cpu_dai_name = "samsung-i2s-sec", .codec_dai_name = "wm8580-hifi-playback", .platform_name = "samsung-i2s-sec", .codec_name = "wm8580.0-001b", .ops = &smdk_ops, }, }; static struct snd_soc_card smdk = { .name = "SMDK-I2S", .owner = THIS_MODULE, .dai_link = smdk_dai, .num_links = 2, .dapm_widgets = smdk_wm8580_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(smdk_wm8580_dapm_widgets), .dapm_routes = smdk_wm8580_audio_map, .num_dapm_routes = ARRAY_SIZE(smdk_wm8580_audio_map), }; static struct platform_device *smdk_snd_device; static int __init smdk_audio_init(void) { int ret; char *str; if (machine_is_smdkc100() || machine_is_smdkv210() || machine_is_smdkc110()) { smdk.num_links = 3; } else if (machine_is_smdk6410()) { str = (char *)smdk_dai[PRI_PLAYBACK].cpu_dai_name; str[strlen(str) - 1] = '2'; str = (char *)smdk_dai[PRI_CAPTURE].cpu_dai_name; str[strlen(str) - 1] = '2'; } smdk_snd_device = platform_device_alloc("soc-audio", -1); if (!smdk_snd_device) return -ENOMEM; platform_set_drvdata(smdk_snd_device, &smdk); ret = platform_device_add(smdk_snd_device); if (ret) platform_device_put(smdk_snd_device); return ret; } module_init(smdk_audio_init); static void __exit smdk_audio_exit(void) { platform_device_unregister(smdk_snd_device); } module_exit(smdk_audio_exit); MODULE_AUTHOR("Jaswinder Singh, jassisinghbrar@gmail.com"); MODULE_DESCRIPTION("ALSA SoC SMDK WM8580"); MODULE_LICENSE("GPL");