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linux/sound/soc/omap/omap3pandora.c
Joonyoung Shim 7154b3e802 ASoC: TWL4030: Add support Voice DAI 
Add Voice DAI to support the PCM voice interface of the twl4030 codec.

The PCM voice interface can be used with 8-kHz(voice narrowband) or
16-kHz(voice wideband) sampling rates, and 16bits, and mono RX and mono
TX or stereo TX.

The PCM voice interface has two modes
 - PCM mode1 : This uses the normal FS polarity and the rising edge of
               the clock signal.
 - PCM mode2 : This uses the FS polarity inverted and the falling edge
               of the clock signal.

If the system master clock is not 26MHz or the twl4030 codec mode is not
option2, the voice PCM interface is not available.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-04-20 12:44:24 +01:00

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/*
* omap3pandora.c -- SoC audio for Pandora Handheld Console
*
* Author: Gražvydas Ignotas <notasas@gmail.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <asm/mach-types.h>
#include "omap-mcbsp.h"
#include "omap-pcm.h"
#include "../codecs/twl4030.h"
#define OMAP3_PANDORA_DAC_POWER_GPIO 118
#define OMAP3_PANDORA_AMP_POWER_GPIO 14
#define PREFIX "ASoC omap3pandora: "
static int omap3pandora_cmn_hw_params(struct snd_soc_dai *codec_dai,
struct snd_soc_dai *cpu_dai, unsigned int fmt)
{
int ret;
/* Set codec DAI configuration */
ret = snd_soc_dai_set_fmt(codec_dai, fmt);
if (ret < 0) {
pr_err(PREFIX "can't set codec DAI configuration\n");
return ret;
}
/* Set cpu DAI configuration */
ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
if (ret < 0) {
pr_err(PREFIX "can't set cpu DAI configuration\n");
return ret;
}
/* Set the codec system clock for DAC and ADC */
ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
SND_SOC_CLOCK_IN);
if (ret < 0) {
pr_err(PREFIX "can't set codec system clock\n");
return ret;
}
/* Set McBSP clock to external */
ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_SYSCLK_CLKS_EXT, 0,
SND_SOC_CLOCK_IN);
if (ret < 0) {
pr_err(PREFIX "can't set cpu system clock\n");
return ret;
}
ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_MCBSP_CLKGDV, 8);
if (ret < 0) {
pr_err(PREFIX "can't set SRG clock divider\n");
return ret;
}
return 0;
}
static int omap3pandora_out_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 *codec_dai = rtd->dai->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
return omap3pandora_cmn_hw_params(codec_dai, cpu_dai,
SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_IB_NF |
SND_SOC_DAIFMT_CBS_CFS);
}
static int omap3pandora_in_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 *codec_dai = rtd->dai->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
return omap3pandora_cmn_hw_params(codec_dai, cpu_dai,
SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS);
}
static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
{
if (SND_SOC_DAPM_EVENT_ON(event)) {
gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1);
gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 1);
} else {
gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
mdelay(1);
gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
}
return 0;
}
/*
* Audio paths on Pandora board:
*
* |O| ---> PCM DAC +-> AMP -> Headphone Jack
* |M| A +--------> Line Out
* |A| <~~clk~~+
* |P| <--- TWL4030 <--------- Line In and MICs
*/
static const struct snd_soc_dapm_widget omap3pandora_out_dapm_widgets[] = {
SND_SOC_DAPM_DAC("PCM DAC", "Playback", SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_PGA_E("Headphone Amplifier", SND_SOC_NOPM,
0, 0, NULL, 0, omap3pandora_hp_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_LINE("Line Out", NULL),
};
static const struct snd_soc_dapm_widget omap3pandora_in_dapm_widgets[] = {
SND_SOC_DAPM_MIC("Mic (internal)", NULL),
SND_SOC_DAPM_MIC("Mic (external)", NULL),
SND_SOC_DAPM_LINE("Line In", NULL),
};
static const struct snd_soc_dapm_route omap3pandora_out_map[] = {
{"Headphone Amplifier", NULL, "PCM DAC"},
{"Line Out", NULL, "PCM DAC"},
{"Headphone Jack", NULL, "Headphone Amplifier"},
};
static const struct snd_soc_dapm_route omap3pandora_in_map[] = {
{"AUXL", NULL, "Line In"},
{"AUXR", NULL, "Line In"},
{"MAINMIC", NULL, "Mic Bias 1"},
{"Mic Bias 1", NULL, "Mic (internal)"},
{"SUBMIC", NULL, "Mic Bias 2"},
{"Mic Bias 2", NULL, "Mic (external)"},
};
static int omap3pandora_out_init(struct snd_soc_codec *codec)
{
int ret;
/* All TWL4030 output pins are floating */
snd_soc_dapm_nc_pin(codec, "OUTL");
snd_soc_dapm_nc_pin(codec, "OUTR");
snd_soc_dapm_nc_pin(codec, "EARPIECE");
snd_soc_dapm_nc_pin(codec, "PREDRIVEL");
snd_soc_dapm_nc_pin(codec, "PREDRIVER");
snd_soc_dapm_nc_pin(codec, "HSOL");
snd_soc_dapm_nc_pin(codec, "HSOR");
snd_soc_dapm_nc_pin(codec, "CARKITL");
snd_soc_dapm_nc_pin(codec, "CARKITR");
snd_soc_dapm_nc_pin(codec, "HFL");
snd_soc_dapm_nc_pin(codec, "HFR");
ret = snd_soc_dapm_new_controls(codec, omap3pandora_out_dapm_widgets,
ARRAY_SIZE(omap3pandora_out_dapm_widgets));
if (ret < 0)
return ret;
snd_soc_dapm_add_routes(codec, omap3pandora_out_map,
ARRAY_SIZE(omap3pandora_out_map));
return snd_soc_dapm_sync(codec);
}
static int omap3pandora_in_init(struct snd_soc_codec *codec)
{
int ret;
/* Not comnnected */
snd_soc_dapm_nc_pin(codec, "HSMIC");
snd_soc_dapm_nc_pin(codec, "CARKITMIC");
snd_soc_dapm_nc_pin(codec, "DIGIMIC0");
snd_soc_dapm_nc_pin(codec, "DIGIMIC1");
ret = snd_soc_dapm_new_controls(codec, omap3pandora_in_dapm_widgets,
ARRAY_SIZE(omap3pandora_in_dapm_widgets));
if (ret < 0)
return ret;
snd_soc_dapm_add_routes(codec, omap3pandora_in_map,
ARRAY_SIZE(omap3pandora_in_map));
return snd_soc_dapm_sync(codec);
}
static struct snd_soc_ops omap3pandora_out_ops = {
.hw_params = omap3pandora_out_hw_params,
};
static struct snd_soc_ops omap3pandora_in_ops = {
.hw_params = omap3pandora_in_hw_params,
};
/* Digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link omap3pandora_dai[] = {
{
.name = "PCM1773",
.stream_name = "HiFi Out",
.cpu_dai = &omap_mcbsp_dai[0],
.codec_dai = &twl4030_dai[TWL4030_DAI_HIFI],
.ops = &omap3pandora_out_ops,
.init = omap3pandora_out_init,
}, {
.name = "TWL4030",
.stream_name = "Line/Mic In",
.cpu_dai = &omap_mcbsp_dai[1],
.codec_dai = &twl4030_dai[TWL4030_DAI_HIFI],
.ops = &omap3pandora_in_ops,
.init = omap3pandora_in_init,
}
};
/* SoC card */
static struct snd_soc_card snd_soc_card_omap3pandora = {
.name = "omap3pandora",
.platform = &omap_soc_platform,
.dai_link = omap3pandora_dai,
.num_links = ARRAY_SIZE(omap3pandora_dai),
};
/* Audio subsystem */
static struct snd_soc_device omap3pandora_snd_data = {
.card = &snd_soc_card_omap3pandora,
.codec_dev = &soc_codec_dev_twl4030,
};
static struct platform_device *omap3pandora_snd_device;
static int __init omap3pandora_soc_init(void)
{
int ret;
if (!machine_is_omap3_pandora())
return -ENODEV;
pr_info("OMAP3 Pandora SoC init\n");
ret = gpio_request(OMAP3_PANDORA_DAC_POWER_GPIO, "dac_power");
if (ret) {
pr_err(PREFIX "Failed to get DAC power GPIO\n");
return ret;
}
ret = gpio_direction_output(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
if (ret) {
pr_err(PREFIX "Failed to set DAC power GPIO direction\n");
goto fail0;
}
ret = gpio_request(OMAP3_PANDORA_AMP_POWER_GPIO, "amp_power");
if (ret) {
pr_err(PREFIX "Failed to get amp power GPIO\n");
goto fail0;
}
ret = gpio_direction_output(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
if (ret) {
pr_err(PREFIX "Failed to set amp power GPIO direction\n");
goto fail1;
}
omap3pandora_snd_device = platform_device_alloc("soc-audio", -1);
if (omap3pandora_snd_device == NULL) {
pr_err(PREFIX "Platform device allocation failed\n");
ret = -ENOMEM;
goto fail1;
}
platform_set_drvdata(omap3pandora_snd_device, &omap3pandora_snd_data);
omap3pandora_snd_data.dev = &omap3pandora_snd_device->dev;
*(unsigned int *)omap_mcbsp_dai[0].private_data = 1; /* McBSP2 */
*(unsigned int *)omap_mcbsp_dai[1].private_data = 3; /* McBSP4 */
ret = platform_device_add(omap3pandora_snd_device);
if (ret) {
pr_err(PREFIX "Unable to add platform device\n");
goto fail2;
}
return 0;
fail2:
platform_device_put(omap3pandora_snd_device);
fail1:
gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
fail0:
gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
return ret;
}
module_init(omap3pandora_soc_init);
static void __exit omap3pandora_soc_exit(void)
{
platform_device_unregister(omap3pandora_snd_device);
gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
}
module_exit(omap3pandora_soc_exit);
MODULE_AUTHOR("Grazvydas Ignotas <notasas@gmail.com>");
MODULE_DESCRIPTION("ALSA SoC OMAP3 Pandora");
MODULE_LICENSE("GPL");
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