2010-04-05 11:13:38 +07:00
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/*
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* linux/sound/soc/pxa/z2.c
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*
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* SoC Audio driver for Aeronix Zipit Z2
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*
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* Copyright (C) 2009 Ken McGuire <kenm@desertweyr.com>
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* Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/timer.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include <sound/jack.h>
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#include <asm/mach-types.h>
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#include <mach/hardware.h>
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#include <mach/audio.h>
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#include <mach/z2.h>
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#include "../codecs/wm8750.h"
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#include "pxa2xx-i2s.h"
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static struct snd_soc_card snd_soc_z2;
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static int z2_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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2010-03-18 03:15:21 +07:00
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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2010-04-05 11:13:38 +07:00
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unsigned int clk = 0;
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int ret = 0;
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switch (params_rate(params)) {
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case 8000:
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case 16000:
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case 48000:
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case 96000:
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clk = 12288000;
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break;
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case 11025:
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case 22050:
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case 44100:
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clk = 11289600;
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break;
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}
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/* set 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 | SND_SOC_DAIFMT_CBS_CFS);
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if (ret < 0)
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return ret;
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/* set cpu 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 | SND_SOC_DAIFMT_CBS_CFS);
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if (ret < 0)
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return ret;
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/* set the codec system clock for DAC and ADC */
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ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
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SND_SOC_CLOCK_IN);
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if (ret < 0)
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return ret;
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/* set the I2S system clock as input (unused) */
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ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
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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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static struct snd_soc_jack hs_jack;
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/* Headset jack detection DAPM pins */
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static struct snd_soc_jack_pin hs_jack_pins[] = {
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{
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.pin = "Mic Jack",
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.mask = SND_JACK_MICROPHONE,
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},
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{
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.pin = "Headphone Jack",
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.mask = SND_JACK_HEADPHONE,
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},
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};
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/* Headset jack detection gpios */
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static struct snd_soc_jack_gpio hs_jack_gpios[] = {
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{
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.gpio = GPIO37_ZIPITZ2_HEADSET_DETECT,
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.name = "hsdet-gpio",
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.report = SND_JACK_HEADSET,
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.debounce_time = 200,
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2011-01-18 21:54:24 +07:00
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.invert = 1,
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2010-04-05 11:13:38 +07:00
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},
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};
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/* z2 machine dapm widgets */
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static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
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SND_SOC_DAPM_HP("Headphone Jack", NULL),
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SND_SOC_DAPM_MIC("Mic Jack", NULL),
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SND_SOC_DAPM_SPK("Ext Spk", NULL),
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/* headset is a mic and mono headphone */
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SND_SOC_DAPM_HP("Headset Jack", NULL),
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};
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/* Z2 machine audio_map */
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static const struct snd_soc_dapm_route audio_map[] = {
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/* headphone connected to LOUT1, ROUT1 */
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{"Headphone Jack", NULL, "LOUT1"},
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{"Headphone Jack", NULL, "ROUT1"},
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/* ext speaker connected to LOUT2, ROUT2 */
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{"Ext Spk", NULL , "ROUT2"},
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{"Ext Spk", NULL , "LOUT2"},
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/* mic is connected to R input 2 - with bias */
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{"RINPUT2", NULL, "Mic Bias"},
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{"Mic Bias", NULL, "Mic Jack"},
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};
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/*
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* Logic for a wm8750 as connected on a Z2 Device
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*/
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2010-03-18 03:15:21 +07:00
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static int z2_wm8750_init(struct snd_soc_pcm_runtime *rtd)
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2010-04-05 11:13:38 +07:00
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{
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2010-03-18 03:15:21 +07:00
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struct snd_soc_codec *codec = rtd->codec;
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2010-11-05 20:53:46 +07:00
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struct snd_soc_dapm_context *dapm = &codec->dapm;
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2010-04-05 11:13:38 +07:00
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int ret;
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/* NC codec pins */
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2010-11-05 20:53:46 +07:00
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snd_soc_dapm_disable_pin(dapm, "LINPUT3");
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snd_soc_dapm_disable_pin(dapm, "RINPUT3");
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snd_soc_dapm_disable_pin(dapm, "OUT3");
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snd_soc_dapm_disable_pin(dapm, "MONO");
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2010-04-05 11:13:38 +07:00
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/* Add z2 specific widgets */
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2010-11-05 20:53:46 +07:00
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snd_soc_dapm_new_controls(dapm, wm8750_dapm_widgets,
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2010-04-05 11:13:38 +07:00
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ARRAY_SIZE(wm8750_dapm_widgets));
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/* Set up z2 specific audio paths */
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2010-11-05 20:53:46 +07:00
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snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
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2010-04-05 11:13:38 +07:00
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2010-11-05 20:53:46 +07:00
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ret = snd_soc_dapm_sync(dapm);
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2010-04-05 11:13:38 +07:00
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if (ret)
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goto err;
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/* Jack detection API stuff */
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2010-03-18 03:15:21 +07:00
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ret = snd_soc_jack_new(codec, "Headset Jack", SND_JACK_HEADSET,
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2010-04-05 11:13:38 +07:00
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&hs_jack);
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if (ret)
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goto err;
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ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
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hs_jack_pins);
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if (ret)
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goto err;
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ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
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hs_jack_gpios);
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if (ret)
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goto err;
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return 0;
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err:
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return ret;
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}
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static struct snd_soc_ops z2_ops = {
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.hw_params = z2_hw_params,
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};
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/* z2 digital audio interface glue - connects codec <--> CPU */
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static struct snd_soc_dai_link z2_dai = {
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.name = "wm8750",
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.stream_name = "WM8750",
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2010-08-20 23:18:43 +07:00
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.cpu_dai_name = "pxa2xx-i2s",
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2010-03-18 03:15:21 +07:00
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.codec_dai_name = "wm8750-hifi",
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.platform_name = "pxa-pcm-audio",
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2011-01-18 21:54:25 +07:00
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.codec_name = "wm8750-codec.0-001b",
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2010-04-05 11:13:38 +07:00
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.init = z2_wm8750_init,
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.ops = &z2_ops,
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};
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/* z2 audio machine driver */
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static struct snd_soc_card snd_soc_z2 = {
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.name = "Z2",
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.dai_link = &z2_dai,
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.num_links = 1,
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};
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static struct platform_device *z2_snd_device;
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static int __init z2_init(void)
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{
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int ret;
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if (!machine_is_zipit2())
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return -ENODEV;
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z2_snd_device = platform_device_alloc("soc-audio", -1);
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if (!z2_snd_device)
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return -ENOMEM;
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2010-03-18 03:15:21 +07:00
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platform_set_drvdata(z2_snd_device, &snd_soc_z2);
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2010-04-05 11:13:38 +07:00
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ret = platform_device_add(z2_snd_device);
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if (ret)
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platform_device_put(z2_snd_device);
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return ret;
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}
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static void __exit z2_exit(void)
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{
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platform_device_unregister(z2_snd_device);
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}
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module_init(z2_init);
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module_exit(z2_exit);
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MODULE_AUTHOR("Ken McGuire <kenm@desertweyr.com>, "
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"Marek Vasut <marek.vasut@gmail.com>");
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MODULE_DESCRIPTION("ALSA SoC ZipitZ2");
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MODULE_LICENSE("GPL");
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