Here is a first stab at a driver that will make the GTA02 make sounds. I havent properly patched it in as I'm not sure what is happening to the naming conventions for different Neo versions.
Find attached the driver file and a stereoout.state that you can use to make the headphones and the handset speaker make sound. The stereo speakers on my GTA02 seem to be non functional, but I might have misread the schematics and just set stuff up wrong. Another question is the amp is currently set to on in init, mainly as Im not sure if we want that under driver or usespace control. Graeme
/*
* neo1973_wm8753.c -- SoC audio for Neo1973
*
* Copyright 2007 Wolfson Microelectronics PLC.
* Author: Graeme Gregory
* [EMAIL PROTECTED] or [EMAIL PROTECTED]
*
* 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.
*
* Revision history
* 20th Jan 2007 Initial version.
* 05th Feb 2007 Rename all to Neo1973
*
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <sound/driver.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <asm/mach-types.h>
#include <asm/hardware/scoop.h>
#include <asm/arch/regs-iis.h>
#include <asm/arch/regs-clock.h>
#include <asm/arch/regs-gpio.h>
#include <asm/hardware.h>
#include <asm/arch/audio.h>
#include <asm/io.h>
#include <asm/arch/spi-gpio.h>
#include <asm/arch/regs-gpioj.h>
#include <asm/arch/gta02.h>
#include "../codecs/wm8753.h"
#include "s3c24xx-pcm.h"
#include "s3c24xx-i2s.h"
/* define the scenarios */
#define NEO_AUDIO_OFF 0
#define NEO_GSM_CALL_AUDIO_HANDSET 1
#define NEO_GSM_CALL_AUDIO_HEADSET 2
#define NEO_GSM_CALL_AUDIO_BLUETOOTH 3
#define NEO_STEREO_TO_SPEAKERS 4
#define NEO_STEREO_TO_HEADPHONES 5
#define NEO_CAPTURE_HANDSET 6
#define NEO_CAPTURE_HEADSET 7
#define NEO_CAPTURE_BLUETOOTH 8
#define NEO_STEREO_TO_HANDSET_SPK 9
static struct snd_soc_machine neo1973;
static struct i2c_client *i2c;
static int neo1973_hifi_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_codec_dai *codec_dai = rtd->dai->codec_dai;
struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
unsigned int pll_out = 0, bclk = 0;
int ret = 0;
unsigned long iis_clkrate;
iis_clkrate = s3c24xx_i2s_get_clockrate();
switch (params_rate(params)) {
case 8000:
case 16000:
pll_out = 12288000;
break;
case 48000:
bclk = WM8753_BCLK_DIV_4;
pll_out = 12288000;
break;
case 96000:
bclk = WM8753_BCLK_DIV_2;
pll_out = 12288000;
break;
case 11025:
bclk = WM8753_BCLK_DIV_16;
pll_out = 11289600;
break;
case 22050:
bclk = WM8753_BCLK_DIV_8;
pll_out = 11289600;
break;
case 44100:
bclk = WM8753_BCLK_DIV_4;
pll_out = 11289600;
break;
case 88200:
bclk = WM8753_BCLK_DIV_2;
pll_out = 11289600;
break;
}
/* set codec DAI configuration */
ret = codec_dai->dai_ops.set_fmt(codec_dai,
SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM);
if (ret < 0)
return ret;
/* set cpu DAI configuration */
ret = cpu_dai->dai_ops.set_fmt(cpu_dai,
SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM);
if (ret < 0)
return ret;
/* set the codec system clock for DAC and ADC */
ret = codec_dai->dai_ops.set_sysclk(codec_dai, WM8753_MCLK, pll_out,
SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
/* set MCLK division for sample rate */
ret = cpu_dai->dai_ops.set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
S3C2410_IISMOD_32FS );
if (ret < 0)
return ret;
/* set codec BCLK division for sample rate */
ret = codec_dai->dai_ops.set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
if (ret < 0)
return ret;
/* set prescaler division for sample rate */
ret = cpu_dai->dai_ops.set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
S3C24XX_PRESCALE(4,4));
if (ret < 0)
return ret;
/* codec PLL input is PCLK/4 */
ret = codec_dai->dai_ops.set_pll(codec_dai, WM8753_PLL1,
iis_clkrate / 4, pll_out);
if (ret < 0)
return ret;
return 0;
}
static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
/* disable the PLL */
return codec_dai->dai_ops.set_pll(codec_dai, WM8753_PLL1, 0, 0);
}
/*
* Neo1973 WM8753 HiFi DAI opserations.
*/
static struct snd_soc_ops neo1973_hifi_ops = {
.hw_params = neo1973_hifi_hw_params,
.hw_free = neo1973_hifi_hw_free,
};
static int neo1973_voice_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_codec_dai *codec_dai = rtd->dai->codec_dai;
unsigned int pcmdiv = 0;
int ret = 0;
unsigned long iis_clkrate;
iis_clkrate = s3c24xx_i2s_get_clockrate();
if (params_rate(params) != 8000)
return -EINVAL;
if (params_channels(params) != 1)
return -EINVAL;
pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
/* todo: gg check mode (DSP_B) against CSR datasheet */
/* set codec DAI configuration */
ret = codec_dai->dai_ops.set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B |
SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
if (ret < 0)
return ret;
/* set the codec system clock for DAC and ADC */
ret = codec_dai->dai_ops.set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
/* set codec PCM division for sample rate */
ret = codec_dai->dai_ops.set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
if (ret < 0)
return ret;
/* configue and enable PLL for 12.288MHz output */
ret = codec_dai->dai_ops.set_pll(codec_dai, WM8753_PLL2,
iis_clkrate / 4, 12288000);
if (ret < 0)
return ret;
return 0;
}
static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
/* disable the PLL */
return codec_dai->dai_ops.set_pll(codec_dai, WM8753_PLL2, 0, 0);
}
static struct snd_soc_ops neo1973_voice_ops = {
.hw_params = neo1973_voice_hw_params,
.hw_free = neo1973_voice_hw_free,
};
static int neo1973_scenario = 0;
static int neo1973_get_scenario(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.integer.value[0] = neo1973_scenario;
return 0;
}
static int set_scenario_endpoints(struct snd_soc_codec *codec, int scenario)
{
switch(neo1973_scenario) {
case NEO_AUDIO_OFF:
snd_soc_dapm_set_endpoint(codec, "Audio Out", 0);
snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
snd_soc_dapm_set_endpoint(codec, "Handset Spk", 0);
break;
case NEO_GSM_CALL_AUDIO_HANDSET:
snd_soc_dapm_set_endpoint(codec, "Audio Out", 1);
snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 1);
snd_soc_dapm_set_endpoint(codec, "GSM Line In", 1);
snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
snd_soc_dapm_set_endpoint(codec, "Call Mic", 1);
snd_soc_dapm_set_endpoint(codec, "Handset Spk", 1);
break;
case NEO_GSM_CALL_AUDIO_HEADSET:
snd_soc_dapm_set_endpoint(codec, "Audio Out", 1);
snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 1);
snd_soc_dapm_set_endpoint(codec, "GSM Line In", 1);
snd_soc_dapm_set_endpoint(codec, "Headset Mic", 1);
snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
snd_soc_dapm_set_endpoint(codec, "Handset Spk", 0);
break;
case NEO_GSM_CALL_AUDIO_BLUETOOTH:
snd_soc_dapm_set_endpoint(codec, "Audio Out", 0);
snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 1);
snd_soc_dapm_set_endpoint(codec, "GSM Line In", 1);
snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
snd_soc_dapm_set_endpoint(codec, "Handset Spk", 0);
break;
case NEO_STEREO_TO_SPEAKERS:
snd_soc_dapm_set_endpoint(codec, "Audio Out", 1);
snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
snd_soc_dapm_set_endpoint(codec, "Handset Spk", 0);
break;
case NEO_STEREO_TO_HANDSET_SPK:
snd_soc_dapm_set_endpoint(codec, "Audio Out", 0);
snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
snd_soc_dapm_set_endpoint(codec, "Handset Spk", 1);
break;
case NEO_STEREO_TO_HEADPHONES:
snd_soc_dapm_set_endpoint(codec, "Audio Out", 1);
snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
snd_soc_dapm_set_endpoint(codec, "Handset Spk", 0);
break;
case NEO_CAPTURE_HANDSET:
snd_soc_dapm_set_endpoint(codec, "Audio Out", 0);
snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
snd_soc_dapm_set_endpoint(codec, "Call Mic", 1);
snd_soc_dapm_set_endpoint(codec, "Handset Spk", 0);
break;
case NEO_CAPTURE_HEADSET:
snd_soc_dapm_set_endpoint(codec, "Audio Out", 0);
snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
snd_soc_dapm_set_endpoint(codec, "Headset Mic", 1);
snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
snd_soc_dapm_set_endpoint(codec, "Handset Spk", 0);
break;
case NEO_CAPTURE_BLUETOOTH:
snd_soc_dapm_set_endpoint(codec, "Audio Out", 0);
snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
snd_soc_dapm_set_endpoint(codec, "Handset Spk", 0);
break;
default:
snd_soc_dapm_set_endpoint(codec, "Audio Out", 0);
snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
snd_soc_dapm_set_endpoint(codec, "Handset Spk", 0);
}
snd_soc_dapm_sync_endpoints(codec);
return 0;
}
static int neo1973_set_scenario(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
if (neo1973_scenario == ucontrol->value.integer.value[0])
return 0;
neo1973_scenario = ucontrol->value.integer.value[0];
set_scenario_endpoints(codec, neo1973_scenario);
return 1;
}
static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = {
SND_SOC_DAPM_LINE("Audio Out", NULL),
SND_SOC_DAPM_LINE("GSM Line Out", NULL),
SND_SOC_DAPM_LINE("GSM Line In", NULL),
SND_SOC_DAPM_MIC("Headset Mic", NULL),
SND_SOC_DAPM_MIC("Call Mic", NULL),
SND_SOC_DAPM_SPK("Handset Spk", NULL),
};
/* example machine audio_mapnections */
static const char* audio_map[][3] = {
/* Connections to the lm4853 amp */
{"Audio Out", NULL, "LOUT1"},
{"Audio Out", NULL, "ROUT1"},
/* Connections to the GSM Module */
{"GSM Line Out", NULL, "MONO1"},
{"GSM Line Out", NULL, "MONO2"},
{"RXP", NULL, "GSM Line In"},
{"RXN", NULL, "GSM Line In"},
/* Connections to Headset */
{"MIC1", NULL, "Mic Bias"},
{"Mic Bias", NULL, "Headset Mic"},
/* Call Mic */
{"MIC2", NULL, "Mic Bias"},
{"MIC2N", NULL, "Mic Bias"},
{"Mic Bias", NULL, "Call Mic"},
/* Call Speaker */
{"Handset Speaker", NULL, "LOUT2"},
{"Handset Speaker", NULL, "ROUT2"},
/* Connect the ALC pins */
{"ACIN", NULL, "ACOP"},
{NULL, NULL, NULL},
};
static const char *neo_scenarios[] = {
"Off",
"GSM Handset",
"GSM Headset",
"GSM Bluetooth",
"Speakers",
"Headphones",
"Capture Handset",
"Capture Headset",
"Capture Bluetooth",
"Handset Seaker"
};
static const struct soc_enum neo_scenario_enum[] = {
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(neo_scenarios),neo_scenarios),
};
static const struct snd_kcontrol_new wm8753_neo1973_controls[] = {
SOC_ENUM_EXT("Neo Mode", neo_scenario_enum[0],
neo1973_get_scenario, neo1973_set_scenario),
};
/*
* This is an example machine initialisation for a wm8753 connected to a
* neo1973 II. It is missing logic to detect hp/mic insertions and logic
* to re-route the audio in such an event.
*/
static int neo1973_wm8753_init(struct snd_soc_codec *codec)
{
int i, err;
/* set up NC codec pins */
snd_soc_dapm_set_endpoint(codec, "OUT3", 0);
snd_soc_dapm_set_endpoint(codec, "OUT4", 0);
snd_soc_dapm_set_endpoint(codec, "LINE1", 0);
snd_soc_dapm_set_endpoint(codec, "LINE2", 0);
/* set endpoints to default mode */
set_scenario_endpoints(codec, NEO_AUDIO_OFF);
/* Add neo1973 specific widgets */
for (i = 0; i < ARRAY_SIZE(wm8753_dapm_widgets); i++)
snd_soc_dapm_new_control(codec, &wm8753_dapm_widgets[i]);
/* add neo1973 specific controls */
for (i = 0; i < ARRAY_SIZE(wm8753_neo1973_controls); i++) {
err = snd_ctl_add(codec->card,
snd_soc_cnew(&wm8753_neo1973_controls[i],
codec, NULL));
if (err < 0)
return err;
}
/* set up neo1973 specific audio path audio_mapnects */
for (i = 0; audio_map[i][0] != NULL; i++) {
snd_soc_dapm_connect_input(codec, audio_map[i][0],
audio_map[i][1], audio_map[i][2]);
}
snd_soc_dapm_sync_endpoints(codec);
return 0;
}
/*
* BT Codec DAI
*/
static struct snd_soc_cpu_dai bt_dai =
{ .name = "Bluetooth",
.id = 0,
.type = SND_SOC_DAI_PCM,
.playback = {
.channels_min = 1,
.channels_max = 1,
.rates = SNDRV_PCM_RATE_8000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
.capture = {
.channels_min = 1,
.channels_max = 1,
.rates = SNDRV_PCM_RATE_8000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
};
static struct snd_soc_dai_link neo1973_dai[] = {
{ /* Hifi Playback - for similatious use with voice below */
.name = "WM8753",
.stream_name = "WM8753 HiFi",
.cpu_dai = &s3c24xx_i2s_dai,
.codec_dai = &wm8753_dai[WM8753_DAI_HIFI],
.init = neo1973_wm8753_init,
.ops = &neo1973_hifi_ops,
},
{ /* Voice via BT */
.name = "Bluetooth",
.stream_name = "Voice",
.cpu_dai = &bt_dai,
.codec_dai = &wm8753_dai[WM8753_DAI_VOICE],
.ops = &neo1973_voice_ops,
},
};
static struct snd_soc_machine neo1973 = {
.name = "neo1973-gta02",
.dai_link = neo1973_dai,
.num_links = ARRAY_SIZE(neo1973_dai),
};
static struct wm8753_setup_data neo1973_wm8753_setup = {
.i2c_address = 0x1a,
};
static struct snd_soc_device neo1973_snd_devdata = {
.machine = &neo1973,
.platform = &s3c24xx_soc_platform,
.codec_dev = &soc_codec_dev_wm8753,
.codec_data = &neo1973_wm8753_setup,
};
static struct platform_device *neo1973_snd_device;
static int __init neo1973_init(void)
{
int ret;
if (!machine_is_neo1973_gta02()) {
printk(KERN_INFO
"Only GTA02 hardware supported by ASoc driver\n");
return -ENODEV;
}
neo1973_snd_device = platform_device_alloc("soc-audio", -1);
if (!neo1973_snd_device)
return -ENOMEM;
platform_set_drvdata(neo1973_snd_device, &neo1973_snd_devdata);
neo1973_snd_devdata.dev = &neo1973_snd_device->dev;
ret = platform_device_add(neo1973_snd_device);
if (ret)
platform_device_put(neo1973_snd_device);
s3c2410_gpio_setpin(GTA02_GPIO_AMP_SHUT,0);
return ret;
}
static void __exit neo1973_exit(void)
{
platform_device_unregister(neo1973_snd_device);
}
module_init(neo1973_init);
module_exit(neo1973_exit);
/* Module information */
MODULE_AUTHOR("Graeme Gregory, [EMAIL PROTECTED]");
MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 GTA02");
MODULE_LICENSE("GPL");
stereoout.state
Description: Binary data
