72685f27b1
Since most newer SMDKs have I2S0 routed to the WM8580's Primary DAI, future changes can be minimized if the default CPU DAIs are set to 0, rather than 2. Signed-off-by: Jassi Brar <jassi.brar@samsung.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
292 lines
7.1 KiB
C
292 lines
7.1 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 <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 <asm/mach-types.h>
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#include "../codecs/wm8580.h"
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#include "dma.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 wm8580_dapm_widgets_pbk[] = {
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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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};
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/* SMDK 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", 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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/* Add smdk specific Capture widgets */
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snd_soc_dapm_new_controls(dapm, 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(dapm, 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(dapm, "MicIn");
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/* signal a DAPM event */
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snd_soc_dapm_sync(dapm);
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return 0;
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}
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static int smdk_wm8580_init_paifrx(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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/* Add smdk specific Playback widgets */
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snd_soc_dapm_new_controls(dapm, 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(dapm, audio_map_rx, ARRAY_SIZE(audio_map_rx));
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/* signal a DAPM event */
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snd_soc_dapm_sync(dapm);
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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-codec.0-001b",
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.init = smdk_wm8580_init_paifrx,
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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-codec.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-codec.0-001b",
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.init = smdk_wm8580_init_paifrx,
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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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.dai_link = smdk_dai,
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.num_links = 2,
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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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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, jassi.brar@samsung.com");
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MODULE_DESCRIPTION("ALSA SoC SMDK WM8580");
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MODULE_LICENSE("GPL");
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