mirror of https://gitee.com/openkylin/linux.git
269 lines
6.6 KiB
C
269 lines
6.6 KiB
C
/*
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* smdk64xx_wm8580.c
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*
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* Copyright (c) 2009 Samsung Electronics Co. Ltd
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* Author: Jaswinder Singh <jassi.brar@samsung.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/platform_device.h>
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#include <linux/clk.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include "../codecs/wm8580.h"
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#include "s3c-dma.h"
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#include "s3c64xx-i2s.h"
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#define S3C64XX_I2S_V4 2
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/* SMDK64XX has a 12MHZ crystal attached to WM8580 */
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#define SMDK64XX_WM8580_FREQ 12000000
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static int smdk64xx_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->dai->cpu_dai;
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struct snd_soc_dai *codec_dai = rtd->dai->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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ret = snd_soc_dai_set_sysclk(cpu_dai, S3C64XX_CLKSRC_CDCLK,
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0, SND_SOC_CLOCK_IN);
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if (ret < 0)
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return ret;
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/* We use PCLK for basic ops in SoC-Slave mode */
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ret = snd_soc_dai_set_sysclk(cpu_dai, S3C64XX_CLKSRC_PCLK,
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0, SND_SOC_CLOCK_IN);
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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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/* Explicitly set WM8580-DAC to source from MCLK */
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ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_DAC_CLKSEL,
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WM8580_CLKSRC_MCLK);
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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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SMDK64XX_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_clkdiv(cpu_dai, S3C_I2SV2_DIV_BCLK, bfs);
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if (ret < 0)
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return ret;
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ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_RCLK, rfs);
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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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* SMDK64XX WM8580 DAI operations.
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*/
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static struct snd_soc_ops smdk64xx_ops = {
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.hw_params = smdk64xx_hw_params,
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};
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/* SMDK64xx Playback widgets */
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static const struct snd_soc_dapm_widget wm8580_dapm_widgets_pbk[] = {
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SND_SOC_DAPM_HP("Front-L/R", NULL),
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SND_SOC_DAPM_HP("Center/Sub", NULL),
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SND_SOC_DAPM_HP("Rear-L/R", NULL),
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};
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/* SMDK64xx Capture widgets */
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static const struct snd_soc_dapm_widget wm8580_dapm_widgets_cpt[] = {
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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 audio_map_tx[] = {
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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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};
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/* SMDK-PAIFRX connections */
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static const struct snd_soc_dapm_route audio_map_rx[] = {
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/* Front Left/Right are fed VOUT1L/R */
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{"Front-L/R", NULL, "VOUT1L"},
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{"Front-L/R", 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-L/R", NULL, "VOUT3L"},
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{"Rear-L/R", NULL, "VOUT3R"},
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};
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static int smdk64xx_wm8580_init_paiftx(struct snd_soc_codec *codec)
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{
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/* Add smdk64xx specific Capture widgets */
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snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets_cpt,
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ARRAY_SIZE(wm8580_dapm_widgets_cpt));
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/* Set up PAIFTX audio path */
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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
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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(codec, "MicIn");
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/* signal a DAPM event */
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snd_soc_dapm_sync(codec);
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return 0;
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}
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static int smdk64xx_wm8580_init_paifrx(struct snd_soc_codec *codec)
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{
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/* Add smdk64xx specific Playback widgets */
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snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets_pbk,
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ARRAY_SIZE(wm8580_dapm_widgets_pbk));
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/* Set up PAIFRX audio path */
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snd_soc_dapm_add_routes(codec, audio_map_rx, ARRAY_SIZE(audio_map_rx));
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/* signal a DAPM event */
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snd_soc_dapm_sync(codec);
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return 0;
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}
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static struct snd_soc_dai_link smdk64xx_dai[] = {
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{ /* 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 = &s3c64xx_i2s_dai[S3C64XX_I2S_V4],
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.codec_dai = &wm8580_dai[WM8580_DAI_PAIFRX],
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.init = smdk64xx_wm8580_init_paifrx,
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.ops = &smdk64xx_ops,
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},
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{ /* 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 = &s3c64xx_i2s_dai[S3C64XX_I2S_V4],
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.codec_dai = &wm8580_dai[WM8580_DAI_PAIFTX],
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.init = smdk64xx_wm8580_init_paiftx,
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.ops = &smdk64xx_ops,
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},
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};
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static struct snd_soc_card smdk64xx = {
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.name = "smdk64xx",
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.platform = &s3c24xx_soc_platform,
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.dai_link = smdk64xx_dai,
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.num_links = ARRAY_SIZE(smdk64xx_dai),
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};
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static struct snd_soc_device smdk64xx_snd_devdata = {
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.card = &smdk64xx,
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.codec_dev = &soc_codec_dev_wm8580,
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};
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static struct platform_device *smdk64xx_snd_device;
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static int __init smdk64xx_audio_init(void)
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{
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int ret;
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smdk64xx_snd_device = platform_device_alloc("soc-audio", -1);
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if (!smdk64xx_snd_device)
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return -ENOMEM;
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platform_set_drvdata(smdk64xx_snd_device, &smdk64xx_snd_devdata);
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smdk64xx_snd_devdata.dev = &smdk64xx_snd_device->dev;
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ret = platform_device_add(smdk64xx_snd_device);
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if (ret)
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platform_device_put(smdk64xx_snd_device);
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return ret;
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}
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module_init(smdk64xx_audio_init);
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MODULE_AUTHOR("Jaswinder Singh, jassi.brar@samsung.com");
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MODULE_DESCRIPTION("ALSA SoC SMDK64XX WM8580");
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MODULE_LICENSE("GPL");
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