323 lines · c
1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * spitz.c -- SoC audio for Sharp SL-Cxx00 models Spitz, Borzoi and Akita4 *5 * Copyright 2005 Wolfson Microelectronics PLC.6 * Copyright 2005 Openedhand Ltd.7 *8 * Authors: Liam Girdwood <lrg@slimlogic.co.uk>9 * Richard Purdie <richard@openedhand.com>10 */11 12#include <linux/module.h>13#include <linux/moduleparam.h>14#include <linux/timer.h>15#include <linux/interrupt.h>16#include <linux/platform_device.h>17#include <linux/gpio/consumer.h>18#include <sound/core.h>19#include <sound/pcm.h>20#include <sound/soc.h>21 22#include <asm/mach-types.h>23#include "../codecs/wm8750.h"24#include "pxa2xx-i2s.h"25 26#define SPITZ_HP 027#define SPITZ_MIC 128#define SPITZ_LINE 229#define SPITZ_HEADSET 330#define SPITZ_HP_OFF 431#define SPITZ_SPK_ON 032#define SPITZ_SPK_OFF 133 34 /* audio clock in Hz - rounded from 12.235MHz */35#define SPITZ_AUDIO_CLOCK 1228800036 37static int spitz_jack_func;38static int spitz_spk_func;39static struct gpio_desc *gpiod_mic, *gpiod_mute_l, *gpiod_mute_r;40 41static void spitz_ext_control(struct snd_soc_dapm_context *dapm)42{43 snd_soc_dapm_mutex_lock(dapm);44 45 if (spitz_spk_func == SPITZ_SPK_ON)46 snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");47 else48 snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");49 50 /* set up jack connection */51 switch (spitz_jack_func) {52 case SPITZ_HP:53 /* enable and unmute hp jack, disable mic bias */54 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");55 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");56 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");57 snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");58 gpiod_set_value(gpiod_mute_l, 1);59 gpiod_set_value(gpiod_mute_r, 1);60 break;61 case SPITZ_MIC:62 /* enable mic jack and bias, mute hp */63 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");64 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");65 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");66 snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");67 gpiod_set_value(gpiod_mute_l, 0);68 gpiod_set_value(gpiod_mute_r, 0);69 break;70 case SPITZ_LINE:71 /* enable line jack, disable mic bias and mute hp */72 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");73 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");74 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");75 snd_soc_dapm_enable_pin_unlocked(dapm, "Line Jack");76 gpiod_set_value(gpiod_mute_l, 0);77 gpiod_set_value(gpiod_mute_r, 0);78 break;79 case SPITZ_HEADSET:80 /* enable and unmute headset jack enable mic bias, mute L hp */81 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");82 snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");83 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");84 snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack");85 gpiod_set_value(gpiod_mute_l, 0);86 gpiod_set_value(gpiod_mute_r, 1);87 break;88 case SPITZ_HP_OFF:89 90 /* jack removed, everything off */91 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");92 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");93 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");94 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");95 gpiod_set_value(gpiod_mute_l, 0);96 gpiod_set_value(gpiod_mute_r, 0);97 break;98 }99 100 snd_soc_dapm_sync_unlocked(dapm);101 102 snd_soc_dapm_mutex_unlock(dapm);103}104 105static int spitz_startup(struct snd_pcm_substream *substream)106{107 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);108 109 /* check the jack status at stream startup */110 spitz_ext_control(&rtd->card->dapm);111 112 return 0;113}114 115static int spitz_hw_params(struct snd_pcm_substream *substream,116 struct snd_pcm_hw_params *params)117{118 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);119 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);120 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);121 unsigned int clk = 0;122 int ret = 0;123 124 switch (params_rate(params)) {125 case 8000:126 case 16000:127 case 48000:128 case 96000:129 clk = 12288000;130 break;131 case 11025:132 case 22050:133 case 44100:134 clk = 11289600;135 break;136 }137 138 /* set the codec system clock for DAC and ADC */139 ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,140 SND_SOC_CLOCK_IN);141 if (ret < 0)142 return ret;143 144 /* set the I2S system clock as input (unused) */145 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,146 SND_SOC_CLOCK_IN);147 if (ret < 0)148 return ret;149 150 return 0;151}152 153static const struct snd_soc_ops spitz_ops = {154 .startup = spitz_startup,155 .hw_params = spitz_hw_params,156};157 158static int spitz_get_jack(struct snd_kcontrol *kcontrol,159 struct snd_ctl_elem_value *ucontrol)160{161 ucontrol->value.enumerated.item[0] = spitz_jack_func;162 return 0;163}164 165static int spitz_set_jack(struct snd_kcontrol *kcontrol,166 struct snd_ctl_elem_value *ucontrol)167{168 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);169 170 if (spitz_jack_func == ucontrol->value.enumerated.item[0])171 return 0;172 173 spitz_jack_func = ucontrol->value.enumerated.item[0];174 spitz_ext_control(&card->dapm);175 return 1;176}177 178static int spitz_get_spk(struct snd_kcontrol *kcontrol,179 struct snd_ctl_elem_value *ucontrol)180{181 ucontrol->value.enumerated.item[0] = spitz_spk_func;182 return 0;183}184 185static int spitz_set_spk(struct snd_kcontrol *kcontrol,186 struct snd_ctl_elem_value *ucontrol)187{188 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);189 190 if (spitz_spk_func == ucontrol->value.enumerated.item[0])191 return 0;192 193 spitz_spk_func = ucontrol->value.enumerated.item[0];194 spitz_ext_control(&card->dapm);195 return 1;196}197 198static int spitz_mic_bias(struct snd_soc_dapm_widget *w,199 struct snd_kcontrol *k, int event)200{201 gpiod_set_value_cansleep(gpiod_mic, SND_SOC_DAPM_EVENT_ON(event));202 return 0;203}204 205/* spitz machine dapm widgets */206static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {207 SND_SOC_DAPM_HP("Headphone Jack", NULL),208 SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),209 SND_SOC_DAPM_SPK("Ext Spk", NULL),210 SND_SOC_DAPM_LINE("Line Jack", NULL),211 212 /* headset is a mic and mono headphone */213 SND_SOC_DAPM_HP("Headset Jack", NULL),214};215 216/* Spitz machine audio_map */217static const struct snd_soc_dapm_route spitz_audio_map[] = {218 219 /* headphone connected to LOUT1, ROUT1 */220 {"Headphone Jack", NULL, "LOUT1"},221 {"Headphone Jack", NULL, "ROUT1"},222 223 /* headset connected to ROUT1 and LINPUT1 with bias (def below) */224 {"Headset Jack", NULL, "ROUT1"},225 226 /* ext speaker connected to LOUT2, ROUT2 */227 {"Ext Spk", NULL, "ROUT2"},228 {"Ext Spk", NULL, "LOUT2"},229 230 /* mic is connected to input 1 - with bias */231 {"LINPUT1", NULL, "Mic Bias"},232 {"Mic Bias", NULL, "Mic Jack"},233 234 /* line is connected to input 1 - no bias */235 {"LINPUT1", NULL, "Line Jack"},236};237 238static const char * const jack_function[] = {"Headphone", "Mic", "Line",239 "Headset", "Off"};240static const char * const spk_function[] = {"On", "Off"};241static const struct soc_enum spitz_enum[] = {242 SOC_ENUM_SINGLE_EXT(5, jack_function),243 SOC_ENUM_SINGLE_EXT(2, spk_function),244};245 246static const struct snd_kcontrol_new wm8750_spitz_controls[] = {247 SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,248 spitz_set_jack),249 SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,250 spitz_set_spk),251};252 253/* spitz digital audio interface glue - connects codec <--> CPU */254SND_SOC_DAILINK_DEFS(wm8750,255 DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-i2s")),256 DAILINK_COMP_ARRAY(COMP_CODEC("wm8750.0-001b", "wm8750-hifi")),257 DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));258 259static struct snd_soc_dai_link spitz_dai = {260 .name = "wm8750",261 .stream_name = "WM8750",262 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |263 SND_SOC_DAIFMT_CBS_CFS,264 .ops = &spitz_ops,265 SND_SOC_DAILINK_REG(wm8750),266};267 268/* spitz audio machine driver */269static struct snd_soc_card snd_soc_spitz = {270 .name = "Spitz",271 .owner = THIS_MODULE,272 .dai_link = &spitz_dai,273 .num_links = 1,274 275 .controls = wm8750_spitz_controls,276 .num_controls = ARRAY_SIZE(wm8750_spitz_controls),277 .dapm_widgets = wm8750_dapm_widgets,278 .num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets),279 .dapm_routes = spitz_audio_map,280 .num_dapm_routes = ARRAY_SIZE(spitz_audio_map),281 .fully_routed = true,282};283 284static int spitz_probe(struct platform_device *pdev)285{286 struct snd_soc_card *card = &snd_soc_spitz;287 int ret;288 289 gpiod_mic = devm_gpiod_get(&pdev->dev, "mic", GPIOD_OUT_LOW);290 if (IS_ERR(gpiod_mic))291 return PTR_ERR(gpiod_mic);292 gpiod_mute_l = devm_gpiod_get(&pdev->dev, "mute-l", GPIOD_OUT_LOW);293 if (IS_ERR(gpiod_mute_l))294 return PTR_ERR(gpiod_mute_l);295 gpiod_mute_r = devm_gpiod_get(&pdev->dev, "mute-r", GPIOD_OUT_LOW);296 if (IS_ERR(gpiod_mute_r))297 return PTR_ERR(gpiod_mute_r);298 299 card->dev = &pdev->dev;300 301 ret = devm_snd_soc_register_card(&pdev->dev, card);302 if (ret)303 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",304 ret);305 306 return ret;307}308 309static struct platform_driver spitz_driver = {310 .driver = {311 .name = "spitz-audio",312 .pm = &snd_soc_pm_ops,313 },314 .probe = spitz_probe,315};316 317module_platform_driver(spitz_driver);318 319MODULE_AUTHOR("Richard Purdie");320MODULE_DESCRIPTION("ALSA SoC Spitz");321MODULE_LICENSE("GPL");322MODULE_ALIAS("platform:spitz-audio");323