259 lines
6.2 KiB
C
259 lines
6.2 KiB
C
/*
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* smdk_wm8580.c
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*
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* Copyright (c) 2009 Samsung Electronics Co. Ltd
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* Author: Jaswinder Singh <jassisinghbrar@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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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 <asm/mach-types.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 = substream->private_data;
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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unsigned int pll_out;
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int bfs, rfs, ret;
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switch (params_format(params)) {
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case SNDRV_PCM_FORMAT_U8:
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case SNDRV_PCM_FORMAT_S8:
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bfs = 16;
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break;
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case SNDRV_PCM_FORMAT_U16_LE:
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case SNDRV_PCM_FORMAT_S16_LE:
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bfs = 32;
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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 the Codec DAI configuration */
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ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
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| SND_SOC_DAIFMT_NB_NF
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| SND_SOC_DAIFMT_CBM_CFM);
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if (ret < 0)
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return ret;
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/* Set the AP DAI configuration */
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ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
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| SND_SOC_DAIFMT_NB_NF
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| SND_SOC_DAIFMT_CBM_CFM);
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if (ret < 0)
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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,
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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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struct snd_soc_codec *codec = rtd->codec;
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struct snd_soc_dapm_context *dapm = &codec->dapm;
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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(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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SEC_PLAYBACK,
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};
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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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.cpu_dai_name = "samsung-i2s.0",
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.codec_dai_name = "wm8580-hifi-playback",
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.platform_name = "samsung-audio",
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.codec_name = "wm8580.0-001b",
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.ops = &smdk_ops,
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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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.cpu_dai_name = "samsung-i2s.0",
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.codec_dai_name = "wm8580-hifi-capture",
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.platform_name = "samsung-audio",
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.codec_name = "wm8580.0-001b",
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.init = smdk_wm8580_init_paiftx,
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.ops = &smdk_ops,
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},
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[SEC_PLAYBACK] = { /* Sec_Fifo Playback i/f */
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.name = "Sec_FIFO TX",
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.stream_name = "Playback",
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.cpu_dai_name = "samsung-i2s.x",
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.codec_dai_name = "wm8580-hifi-playback",
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.platform_name = "samsung-audio",
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.codec_name = "wm8580.0-001b",
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.ops = &smdk_ops,
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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 = 2,
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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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char *str;
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if (machine_is_smdkc100()
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|| machine_is_smdkv210() || machine_is_smdkc110()) {
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smdk.num_links = 3;
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/* Secondary is at offset SAMSUNG_I2S_SECOFF from Primary */
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str = (char *)smdk_dai[SEC_PLAYBACK].cpu_dai_name;
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str[strlen(str) - 1] = '0' + SAMSUNG_I2S_SECOFF;
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} else if (machine_is_smdk6410()) {
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str = (char *)smdk_dai[PRI_PLAYBACK].cpu_dai_name;
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str[strlen(str) - 1] = '2';
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str = (char *)smdk_dai[PRI_CAPTURE].cpu_dai_name;
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str[strlen(str) - 1] = '2';
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}
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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, jassisinghbrar@gmail.com");
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MODULE_DESCRIPTION("ALSA SoC SMDK WM8580");
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MODULE_LICENSE("GPL");
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