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Linux/sound/soc/pxa/spitz.c

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  1 // SPDX-License-Identifier: GPL-2.0-or-later
  2 /*
  3  * spitz.c  --  SoC audio for Sharp SL-Cxx00 models Spitz, Borzoi and Akita
  4  *
  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.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 <mach/spitz.h>
 24 #include "../codecs/wm8750.h"
 25 #include "pxa2xx-i2s.h"
 26 
 27 #define SPITZ_HP        0
 28 #define SPITZ_MIC       1
 29 #define SPITZ_LINE      2
 30 #define SPITZ_HEADSET   3
 31 #define SPITZ_HP_OFF    4
 32 #define SPITZ_SPK_ON    0
 33 #define SPITZ_SPK_OFF   1
 34 
 35  /* audio clock in Hz - rounded from 12.235MHz */
 36 #define SPITZ_AUDIO_CLOCK 12288000
 37 
 38 static int spitz_jack_func;
 39 static int spitz_spk_func;
 40 static int spitz_mic_gpio;
 41 
 42 static void spitz_ext_control(struct snd_soc_dapm_context *dapm)
 43 {
 44         snd_soc_dapm_mutex_lock(dapm);
 45 
 46         if (spitz_spk_func == SPITZ_SPK_ON)
 47                 snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
 48         else
 49                 snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");
 50 
 51         /* set up jack connection */
 52         switch (spitz_jack_func) {
 53         case SPITZ_HP:
 54                 /* enable and unmute hp jack, disable mic bias */
 55                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
 56                 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
 57                 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
 58                 snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
 59                 gpio_set_value(SPITZ_GPIO_MUTE_L, 1);
 60                 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
 61                 break;
 62         case SPITZ_MIC:
 63                 /* enable mic jack and bias, mute hp */
 64                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
 65                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
 66                 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
 67                 snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
 68                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
 69                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
 70                 break;
 71         case SPITZ_LINE:
 72                 /* enable line jack, disable mic bias and mute hp */
 73                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
 74                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
 75                 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
 76                 snd_soc_dapm_enable_pin_unlocked(dapm, "Line Jack");
 77                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
 78                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
 79                 break;
 80         case SPITZ_HEADSET:
 81                 /* enable and unmute headset jack enable mic bias, mute L hp */
 82                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
 83                 snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
 84                 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
 85                 snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack");
 86                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
 87                 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
 88                 break;
 89         case SPITZ_HP_OFF:
 90 
 91                 /* jack removed, everything off */
 92                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
 93                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
 94                 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
 95                 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
 96                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
 97                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
 98                 break;
 99         }
100 
101         snd_soc_dapm_sync_unlocked(dapm);
102 
103         snd_soc_dapm_mutex_unlock(dapm);
104 }
105 
106 static int spitz_startup(struct snd_pcm_substream *substream)
107 {
108         struct snd_soc_pcm_runtime *rtd = substream->private_data;
109 
110         /* check the jack status at stream startup */
111         spitz_ext_control(&rtd->card->dapm);
112 
113         return 0;
114 }
115 
116 static int spitz_hw_params(struct snd_pcm_substream *substream,
117         struct snd_pcm_hw_params *params)
118 {
119         struct snd_soc_pcm_runtime *rtd = substream->private_data;
120         struct snd_soc_dai *codec_dai = rtd->codec_dai;
121         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
122         unsigned int clk = 0;
123         int ret = 0;
124 
125         switch (params_rate(params)) {
126         case 8000:
127         case 16000:
128         case 48000:
129         case 96000:
130                 clk = 12288000;
131                 break;
132         case 11025:
133         case 22050:
134         case 44100:
135                 clk = 11289600;
136                 break;
137         }
138 
139         /* set the codec system clock for DAC and ADC */
140         ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
141                 SND_SOC_CLOCK_IN);
142         if (ret < 0)
143                 return ret;
144 
145         /* set the I2S system clock as input (unused) */
146         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
147                 SND_SOC_CLOCK_IN);
148         if (ret < 0)
149                 return ret;
150 
151         return 0;
152 }
153 
154 static const struct snd_soc_ops spitz_ops = {
155         .startup = spitz_startup,
156         .hw_params = spitz_hw_params,
157 };
158 
159 static int spitz_get_jack(struct snd_kcontrol *kcontrol,
160         struct snd_ctl_elem_value *ucontrol)
161 {
162         ucontrol->value.enumerated.item[0] = spitz_jack_func;
163         return 0;
164 }
165 
166 static int spitz_set_jack(struct snd_kcontrol *kcontrol,
167         struct snd_ctl_elem_value *ucontrol)
168 {
169         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
170 
171         if (spitz_jack_func == ucontrol->value.enumerated.item[0])
172                 return 0;
173 
174         spitz_jack_func = ucontrol->value.enumerated.item[0];
175         spitz_ext_control(&card->dapm);
176         return 1;
177 }
178 
179 static int spitz_get_spk(struct snd_kcontrol *kcontrol,
180         struct snd_ctl_elem_value *ucontrol)
181 {
182         ucontrol->value.enumerated.item[0] = spitz_spk_func;
183         return 0;
184 }
185 
186 static int spitz_set_spk(struct snd_kcontrol *kcontrol,
187         struct snd_ctl_elem_value *ucontrol)
188 {
189         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
190 
191         if (spitz_spk_func == ucontrol->value.enumerated.item[0])
192                 return 0;
193 
194         spitz_spk_func = ucontrol->value.enumerated.item[0];
195         spitz_ext_control(&card->dapm);
196         return 1;
197 }
198 
199 static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
200         struct snd_kcontrol *k, int event)
201 {
202         gpio_set_value_cansleep(spitz_mic_gpio, SND_SOC_DAPM_EVENT_ON(event));
203         return 0;
204 }
205 
206 /* spitz machine dapm widgets */
207 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
208         SND_SOC_DAPM_HP("Headphone Jack", NULL),
209         SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
210         SND_SOC_DAPM_SPK("Ext Spk", NULL),
211         SND_SOC_DAPM_LINE("Line Jack", NULL),
212 
213         /* headset is a mic and mono headphone */
214         SND_SOC_DAPM_HP("Headset Jack", NULL),
215 };
216 
217 /* Spitz machine audio_map */
218 static const struct snd_soc_dapm_route spitz_audio_map[] = {
219 
220         /* headphone connected to LOUT1, ROUT1 */
221         {"Headphone Jack", NULL, "LOUT1"},
222         {"Headphone Jack", NULL, "ROUT1"},
223 
224         /* headset connected to ROUT1 and LINPUT1 with bias (def below) */
225         {"Headset Jack", NULL, "ROUT1"},
226 
227         /* ext speaker connected to LOUT2, ROUT2  */
228         {"Ext Spk", NULL, "ROUT2"},
229         {"Ext Spk", NULL, "LOUT2"},
230 
231         /* mic is connected to input 1 - with bias */
232         {"LINPUT1", NULL, "Mic Bias"},
233         {"Mic Bias", NULL, "Mic Jack"},
234 
235         /* line is connected to input 1 - no bias */
236         {"LINPUT1", NULL, "Line Jack"},
237 };
238 
239 static const char * const jack_function[] = {"Headphone", "Mic", "Line",
240         "Headset", "Off"};
241 static const char * const spk_function[] = {"On", "Off"};
242 static const struct soc_enum spitz_enum[] = {
243         SOC_ENUM_SINGLE_EXT(5, jack_function),
244         SOC_ENUM_SINGLE_EXT(2, spk_function),
245 };
246 
247 static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
248         SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
249                 spitz_set_jack),
250         SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
251                 spitz_set_spk),
252 };
253 
254 /* spitz digital audio interface glue - connects codec <--> CPU */
255 SND_SOC_DAILINK_DEFS(wm8750,
256         DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-i2s")),
257         DAILINK_COMP_ARRAY(COMP_CODEC("wm8750.0-001b", "wm8750-hifi")),
258         DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
259 
260 static struct snd_soc_dai_link spitz_dai = {
261         .name = "wm8750",
262         .stream_name = "WM8750",
263         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
264                    SND_SOC_DAIFMT_CBS_CFS,
265         .ops = &spitz_ops,
266         SND_SOC_DAILINK_REG(wm8750),
267 };
268 
269 /* spitz audio machine driver */
270 static struct snd_soc_card snd_soc_spitz = {
271         .name = "Spitz",
272         .owner = THIS_MODULE,
273         .dai_link = &spitz_dai,
274         .num_links = 1,
275 
276         .controls = wm8750_spitz_controls,
277         .num_controls = ARRAY_SIZE(wm8750_spitz_controls),
278         .dapm_widgets = wm8750_dapm_widgets,
279         .num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets),
280         .dapm_routes = spitz_audio_map,
281         .num_dapm_routes = ARRAY_SIZE(spitz_audio_map),
282         .fully_routed = true,
283 };
284 
285 static int spitz_probe(struct platform_device *pdev)
286 {
287         struct snd_soc_card *card = &snd_soc_spitz;
288         int ret;
289 
290         if (machine_is_akita())
291                 spitz_mic_gpio = AKITA_GPIO_MIC_BIAS;
292         else
293                 spitz_mic_gpio = SPITZ_GPIO_MIC_BIAS;
294 
295         ret = gpio_request(spitz_mic_gpio, "MIC GPIO");
296         if (ret)
297                 goto err1;
298 
299         ret = gpio_direction_output(spitz_mic_gpio, 0);
300         if (ret)
301                 goto err2;
302 
303         card->dev = &pdev->dev;
304 
305         ret = devm_snd_soc_register_card(&pdev->dev, card);
306         if (ret) {
307                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
308                         ret);
309                 goto err2;
310         }
311 
312         return 0;
313 
314 err2:
315         gpio_free(spitz_mic_gpio);
316 err1:
317         return ret;
318 }
319 
320 static int spitz_remove(struct platform_device *pdev)
321 {
322         gpio_free(spitz_mic_gpio);
323         return 0;
324 }
325 
326 static struct platform_driver spitz_driver = {
327         .driver         = {
328                 .name   = "spitz-audio",
329                 .pm     = &snd_soc_pm_ops,
330         },
331         .probe          = spitz_probe,
332         .remove         = spitz_remove,
333 };
334 
335 module_platform_driver(spitz_driver);
336 
337 MODULE_AUTHOR("Richard Purdie");
338 MODULE_DESCRIPTION("ALSA SoC Spitz");
339 MODULE_LICENSE("GPL");
340 MODULE_ALIAS("platform:spitz-audio");
341 

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