| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * spitz.c -- SoC audio for Sharp SL-Cxx00 models Spitz, Borzoi and Akita |
| * |
| * Copyright 2005 Wolfson Microelectronics PLC. |
| * Copyright 2005 Openedhand Ltd. |
| * |
| * Authors: Liam Girdwood <lrg@slimlogic.co.uk> |
| * Richard Purdie <richard@openedhand.com> |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/timer.h> |
| #include <linux/interrupt.h> |
| #include <linux/platform_device.h> |
| #include <linux/gpio/consumer.h> |
| #include <sound/core.h> |
| #include <sound/pcm.h> |
| #include <sound/soc.h> |
| |
| #include <asm/mach-types.h> |
| #include "../codecs/wm8750.h" |
| #include "pxa2xx-i2s.h" |
| |
| #define SPITZ_HP 0 |
| #define SPITZ_MIC 1 |
| #define SPITZ_LINE 2 |
| #define SPITZ_HEADSET 3 |
| #define SPITZ_HP_OFF 4 |
| #define SPITZ_SPK_ON 0 |
| #define SPITZ_SPK_OFF 1 |
| |
| /* audio clock in Hz - rounded from 12.235MHz */ |
| #define SPITZ_AUDIO_CLOCK 12288000 |
| |
| static int spitz_jack_func; |
| static int spitz_spk_func; |
| static struct gpio_desc *gpiod_mic, *gpiod_mute_l, *gpiod_mute_r; |
| |
| static void spitz_ext_control(struct snd_soc_dapm_context *dapm) |
| { |
| snd_soc_dapm_mutex_lock(dapm); |
| |
| if (spitz_spk_func == SPITZ_SPK_ON) |
| snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk"); |
| else |
| snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk"); |
| |
| /* set up jack connection */ |
| switch (spitz_jack_func) { |
| case SPITZ_HP: |
| /* enable and unmute hp jack, disable mic bias */ |
| snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack"); |
| snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack"); |
| snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack"); |
| snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack"); |
| gpiod_set_value(gpiod_mute_l, 1); |
| gpiod_set_value(gpiod_mute_r, 1); |
| break; |
| case SPITZ_MIC: |
| /* enable mic jack and bias, mute hp */ |
| snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack"); |
| snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack"); |
| snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack"); |
| snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack"); |
| gpiod_set_value(gpiod_mute_l, 0); |
| gpiod_set_value(gpiod_mute_r, 0); |
| break; |
| case SPITZ_LINE: |
| /* enable line jack, disable mic bias and mute hp */ |
| snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack"); |
| snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack"); |
| snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack"); |
| snd_soc_dapm_enable_pin_unlocked(dapm, "Line Jack"); |
| gpiod_set_value(gpiod_mute_l, 0); |
| gpiod_set_value(gpiod_mute_r, 0); |
| break; |
| case SPITZ_HEADSET: |
| /* enable and unmute headset jack enable mic bias, mute L hp */ |
| snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack"); |
| snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack"); |
| snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack"); |
| snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack"); |
| gpiod_set_value(gpiod_mute_l, 0); |
| gpiod_set_value(gpiod_mute_r, 1); |
| break; |
| case SPITZ_HP_OFF: |
| |
| /* jack removed, everything off */ |
| snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack"); |
| snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack"); |
| snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack"); |
| snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack"); |
| gpiod_set_value(gpiod_mute_l, 0); |
| gpiod_set_value(gpiod_mute_r, 0); |
| break; |
| } |
| |
| snd_soc_dapm_sync_unlocked(dapm); |
| |
| snd_soc_dapm_mutex_unlock(dapm); |
| } |
| |
| static int spitz_startup(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
| |
| /* check the jack status at stream startup */ |
| spitz_ext_control(&rtd->card->dapm); |
| |
| return 0; |
| } |
| |
| static int spitz_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params) |
| { |
| struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
| struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); |
| struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); |
| 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 const struct snd_soc_ops spitz_ops = { |
| .startup = spitz_startup, |
| .hw_params = spitz_hw_params, |
| }; |
| |
| static int spitz_get_jack(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| ucontrol->value.enumerated.item[0] = spitz_jack_func; |
| return 0; |
| } |
| |
| static int spitz_set_jack(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); |
| |
| if (spitz_jack_func == ucontrol->value.enumerated.item[0]) |
| return 0; |
| |
| spitz_jack_func = ucontrol->value.enumerated.item[0]; |
| spitz_ext_control(&card->dapm); |
| return 1; |
| } |
| |
| static int spitz_get_spk(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| ucontrol->value.enumerated.item[0] = spitz_spk_func; |
| return 0; |
| } |
| |
| static int spitz_set_spk(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct snd_soc_card *card = snd_kcontrol_chip(kcontrol); |
| |
| if (spitz_spk_func == ucontrol->value.enumerated.item[0]) |
| return 0; |
| |
| spitz_spk_func = ucontrol->value.enumerated.item[0]; |
| spitz_ext_control(&card->dapm); |
| return 1; |
| } |
| |
| static int spitz_mic_bias(struct snd_soc_dapm_widget *w, |
| struct snd_kcontrol *k, int event) |
| { |
| gpiod_set_value_cansleep(gpiod_mic, SND_SOC_DAPM_EVENT_ON(event)); |
| return 0; |
| } |
| |
| /* spitz 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", spitz_mic_bias), |
| SND_SOC_DAPM_SPK("Ext Spk", NULL), |
| SND_SOC_DAPM_LINE("Line Jack", NULL), |
| |
| /* headset is a mic and mono headphone */ |
| SND_SOC_DAPM_HP("Headset Jack", NULL), |
| }; |
| |
| /* Spitz machine audio_map */ |
| static const struct snd_soc_dapm_route spitz_audio_map[] = { |
| |
| /* headphone connected to LOUT1, ROUT1 */ |
| {"Headphone Jack", NULL, "LOUT1"}, |
| {"Headphone Jack", NULL, "ROUT1"}, |
| |
| /* headset connected to ROUT1 and LINPUT1 with bias (def below) */ |
| {"Headset Jack", NULL, "ROUT1"}, |
| |
| /* ext speaker connected to LOUT2, ROUT2 */ |
| {"Ext Spk", NULL, "ROUT2"}, |
| {"Ext Spk", NULL, "LOUT2"}, |
| |
| /* mic is connected to input 1 - with bias */ |
| {"LINPUT1", NULL, "Mic Bias"}, |
| {"Mic Bias", NULL, "Mic Jack"}, |
| |
| /* line is connected to input 1 - no bias */ |
| {"LINPUT1", NULL, "Line Jack"}, |
| }; |
| |
| static const char * const jack_function[] = {"Headphone", "Mic", "Line", |
| "Headset", "Off"}; |
| static const char * const spk_function[] = {"On", "Off"}; |
| static const struct soc_enum spitz_enum[] = { |
| SOC_ENUM_SINGLE_EXT(5, jack_function), |
| SOC_ENUM_SINGLE_EXT(2, spk_function), |
| }; |
| |
| static const struct snd_kcontrol_new wm8750_spitz_controls[] = { |
| SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack, |
| spitz_set_jack), |
| SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk, |
| spitz_set_spk), |
| }; |
| |
| /* spitz digital audio interface glue - connects codec <--> CPU */ |
| SND_SOC_DAILINK_DEFS(wm8750, |
| DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-i2s")), |
| DAILINK_COMP_ARRAY(COMP_CODEC("wm8750.0-001b", "wm8750-hifi")), |
| DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio"))); |
| |
| static struct snd_soc_dai_link spitz_dai = { |
| .name = "wm8750", |
| .stream_name = "WM8750", |
| .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| SND_SOC_DAIFMT_CBS_CFS, |
| .ops = &spitz_ops, |
| SND_SOC_DAILINK_REG(wm8750), |
| }; |
| |
| /* spitz audio machine driver */ |
| static struct snd_soc_card snd_soc_spitz = { |
| .name = "Spitz", |
| .owner = THIS_MODULE, |
| .dai_link = &spitz_dai, |
| .num_links = 1, |
| |
| .controls = wm8750_spitz_controls, |
| .num_controls = ARRAY_SIZE(wm8750_spitz_controls), |
| .dapm_widgets = wm8750_dapm_widgets, |
| .num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets), |
| .dapm_routes = spitz_audio_map, |
| .num_dapm_routes = ARRAY_SIZE(spitz_audio_map), |
| .fully_routed = true, |
| }; |
| |
| static int spitz_probe(struct platform_device *pdev) |
| { |
| struct snd_soc_card *card = &snd_soc_spitz; |
| int ret; |
| |
| gpiod_mic = devm_gpiod_get(&pdev->dev, "mic", GPIOD_OUT_LOW); |
| if (IS_ERR(gpiod_mic)) |
| return PTR_ERR(gpiod_mic); |
| gpiod_mute_l = devm_gpiod_get(&pdev->dev, "mute-l", GPIOD_OUT_LOW); |
| if (IS_ERR(gpiod_mute_l)) |
| return PTR_ERR(gpiod_mute_l); |
| gpiod_mute_r = devm_gpiod_get(&pdev->dev, "mute-r", GPIOD_OUT_LOW); |
| if (IS_ERR(gpiod_mute_r)) |
| return PTR_ERR(gpiod_mute_r); |
| |
| card->dev = &pdev->dev; |
| |
| ret = devm_snd_soc_register_card(&pdev->dev, card); |
| if (ret) |
| dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", |
| ret); |
| |
| return ret; |
| } |
| |
| static int spitz_remove(struct platform_device *pdev) |
| { |
| return 0; |
| } |
| |
| static struct platform_driver spitz_driver = { |
| .driver = { |
| .name = "spitz-audio", |
| .pm = &snd_soc_pm_ops, |
| }, |
| .probe = spitz_probe, |
| .remove = spitz_remove, |
| }; |
| |
| module_platform_driver(spitz_driver); |
| |
| MODULE_AUTHOR("Richard Purdie"); |
| MODULE_DESCRIPTION("ALSA SoC Spitz"); |
| MODULE_LICENSE("GPL"); |
| MODULE_ALIAS("platform:spitz-audio"); |