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219 lines
4.8 KiB
219 lines
4.8 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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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 <[email protected]> |
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* Copyright (C) 2010 Marek Vasut <[email protected]> |
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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 = asoc_substream_to_rtd(substream); |
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struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
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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 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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.pin = "Ext Spk", |
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.mask = SND_JACK_HEADPHONE, |
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.invert = 1 |
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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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.invert = 1, |
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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 z2_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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static int z2_wm8750_init(struct snd_soc_pcm_runtime *rtd) |
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{ |
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int ret; |
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/* Jack detection API stuff */ |
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ret = snd_soc_card_jack_new(rtd->card, "Headset Jack", SND_JACK_HEADSET, |
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&hs_jack, hs_jack_pins, |
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ARRAY_SIZE(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 const 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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SND_SOC_DAILINK_DEFS(wm8750, |
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DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-i2s")), |
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DAILINK_COMP_ARRAY(COMP_CODEC("wm8750.0-001b", "wm8750-hifi")), |
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DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio"))); |
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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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.init = z2_wm8750_init, |
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
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SND_SOC_DAIFMT_CBS_CFS, |
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.ops = &z2_ops, |
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SND_SOC_DAILINK_REG(wm8750), |
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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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.owner = THIS_MODULE, |
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.dai_link = &z2_dai, |
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.num_links = 1, |
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.dapm_widgets = wm8750_dapm_widgets, |
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.num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets), |
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.dapm_routes = z2_audio_map, |
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.num_dapm_routes = ARRAY_SIZE(z2_audio_map), |
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.fully_routed = true, |
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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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platform_set_drvdata(z2_snd_device, &snd_soc_z2); |
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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 <[email protected]>, " |
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"Marek Vasut <[email protected]>"); |
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MODULE_DESCRIPTION("ALSA SoC ZipitZ2"); |
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MODULE_LICENSE("GPL");
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