linux/sound/soc/pxa/z2.c
Lars-Peter Clausen 92ac4c5012 ASoC: z2: Automatically disconnect non-connected pins
Most DAPM input and output pins of the wm8750 are either used in the card's
DAPM routing table or are marked as not connected. The only exceptions are
the LINPUT1, RINPUT1, LINPUT2 input pins. Lets assume that those were
simply overlooked and that the routing table is complete.

Set the fully_routed flag of the card instead of manually marking the
unused inputs and outputs as not connected. This makes the code a bit
shorter and cleaner.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-05-08 12:05:07 +01:00

221 lines
4.8 KiB
C

/*
* linux/sound/soc/pxa/z2.c
*
* SoC Audio driver for Aeronix Zipit Z2
*
* Copyright (C) 2009 Ken McGuire <kenm@desertweyr.com>
* Copyright (C) 2010 Marek Vasut <marek.vasut@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.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <mach/audio.h>
#include <mach/z2.h>
#include "../codecs/wm8750.h"
#include "pxa2xx-i2s.h"
static struct snd_soc_card snd_soc_z2;
static int z2_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->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
unsigned int clk = 0;
int ret = 0;
switch (params_rate(params)) {
case 8000:
case 16000:
case 48000:
case 96000:
clk = 12288000;
break;
case 11025:
case 22050:
case 44100:
clk = 11289600;
break;
}
/* set the codec system clock for DAC and ADC */
ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
/* set the I2S system clock as input (unused) */
ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
return 0;
}
static struct snd_soc_jack hs_jack;
/* Headset jack detection DAPM pins */
static struct snd_soc_jack_pin hs_jack_pins[] = {
{
.pin = "Mic Jack",
.mask = SND_JACK_MICROPHONE,
},
{
.pin = "Headphone Jack",
.mask = SND_JACK_HEADPHONE,
},
{
.pin = "Ext Spk",
.mask = SND_JACK_HEADPHONE,
.invert = 1
},
};
/* Headset jack detection gpios */
static struct snd_soc_jack_gpio hs_jack_gpios[] = {
{
.gpio = GPIO37_ZIPITZ2_HEADSET_DETECT,
.name = "hsdet-gpio",
.report = SND_JACK_HEADSET,
.debounce_time = 200,
.invert = 1,
},
};
/* z2 machine dapm widgets */
static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_MIC("Mic Jack", NULL),
SND_SOC_DAPM_SPK("Ext Spk", NULL),
/* headset is a mic and mono headphone */
SND_SOC_DAPM_HP("Headset Jack", NULL),
};
/* Z2 machine audio_map */
static const struct snd_soc_dapm_route z2_audio_map[] = {
/* headphone connected to LOUT1, ROUT1 */
{"Headphone Jack", NULL, "LOUT1"},
{"Headphone Jack", NULL, "ROUT1"},
/* ext speaker connected to LOUT2, ROUT2 */
{"Ext Spk", NULL , "ROUT2"},
{"Ext Spk", NULL , "LOUT2"},
/* mic is connected to R input 2 - with bias */
{"RINPUT2", NULL, "Mic Bias"},
{"Mic Bias", NULL, "Mic Jack"},
};
/*
* Logic for a wm8750 as connected on a Z2 Device
*/
static int z2_wm8750_init(struct snd_soc_pcm_runtime *rtd)
{
int ret;
/* Jack detection API stuff */
ret = snd_soc_card_jack_new(rtd->card, "Headset Jack", SND_JACK_HEADSET,
&hs_jack, hs_jack_pins,
ARRAY_SIZE(hs_jack_pins));
if (ret)
goto err;
ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
hs_jack_gpios);
if (ret)
goto err;
return 0;
err:
return ret;
}
static struct snd_soc_ops z2_ops = {
.hw_params = z2_hw_params,
};
/* z2 digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link z2_dai = {
.name = "wm8750",
.stream_name = "WM8750",
.cpu_dai_name = "pxa2xx-i2s",
.codec_dai_name = "wm8750-hifi",
.platform_name = "pxa-pcm-audio",
.codec_name = "wm8750.0-001b",
.init = z2_wm8750_init,
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS,
.ops = &z2_ops,
};
/* z2 audio machine driver */
static struct snd_soc_card snd_soc_z2 = {
.name = "Z2",
.owner = THIS_MODULE,
.dai_link = &z2_dai,
.num_links = 1,
.dapm_widgets = wm8750_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets),
.dapm_routes = z2_audio_map,
.num_dapm_routes = ARRAY_SIZE(z2_audio_map),
.fully_routed = true,
};
static struct platform_device *z2_snd_device;
static int __init z2_init(void)
{
int ret;
if (!machine_is_zipit2())
return -ENODEV;
z2_snd_device = platform_device_alloc("soc-audio", -1);
if (!z2_snd_device)
return -ENOMEM;
platform_set_drvdata(z2_snd_device, &snd_soc_z2);
ret = platform_device_add(z2_snd_device);
if (ret)
platform_device_put(z2_snd_device);
return ret;
}
static void __exit z2_exit(void)
{
platform_device_unregister(z2_snd_device);
}
module_init(z2_init);
module_exit(z2_exit);
MODULE_AUTHOR("Ken McGuire <kenm@desertweyr.com>, "
"Marek Vasut <marek.vasut@gmail.com>");
MODULE_DESCRIPTION("ALSA SoC ZipitZ2");
MODULE_LICENSE("GPL");