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Linux/sound/soc/intel/boards/bdw-rt5677.c

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  1 /*
  2  * ASoC machine driver for Intel Broadwell platforms with RT5677 codec
  3  *
  4  * Copyright (c) 2014, The Chromium OS Authors.  All rights reserved.
  5  *
  6  * This program is free software; you can redistribute it and/or modify it
  7  * under the terms and conditions of the GNU General Public License,
  8  * version 2, as published by the Free Software Foundation.
  9  *
 10  * This program is distributed in the hope it will be useful, but WITHOUT
 11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 13  * more details.
 14  *
 15  * You should have received a copy of the GNU General Public License
 16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 17  */
 18 
 19 #include <linux/acpi.h>
 20 #include <linux/module.h>
 21 #include <linux/platform_device.h>
 22 #include <linux/gpio/consumer.h>
 23 #include <linux/delay.h>
 24 #include <sound/core.h>
 25 #include <sound/pcm.h>
 26 #include <sound/soc.h>
 27 #include <sound/pcm_params.h>
 28 #include <sound/jack.h>
 29 
 30 #include "../common/sst-dsp.h"
 31 #include "../haswell/sst-haswell-ipc.h"
 32 
 33 #include "../../codecs/rt5677.h"
 34 
 35 struct bdw_rt5677_priv {
 36         struct gpio_desc *gpio_hp_en;
 37         struct snd_soc_component *component;
 38 };
 39 
 40 static int bdw_rt5677_event_hp(struct snd_soc_dapm_widget *w,
 41                         struct snd_kcontrol *k, int event)
 42 {
 43         struct snd_soc_dapm_context *dapm = w->dapm;
 44         struct snd_soc_card *card = dapm->card;
 45         struct bdw_rt5677_priv *bdw_rt5677 = snd_soc_card_get_drvdata(card);
 46 
 47         if (SND_SOC_DAPM_EVENT_ON(event))
 48                 msleep(70);
 49 
 50         gpiod_set_value_cansleep(bdw_rt5677->gpio_hp_en,
 51                 SND_SOC_DAPM_EVENT_ON(event));
 52 
 53         return 0;
 54 }
 55 
 56 static const struct snd_soc_dapm_widget bdw_rt5677_widgets[] = {
 57         SND_SOC_DAPM_HP("Headphone", bdw_rt5677_event_hp),
 58         SND_SOC_DAPM_SPK("Speaker", NULL),
 59         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 60         SND_SOC_DAPM_MIC("Local DMICs", NULL),
 61         SND_SOC_DAPM_MIC("Remote DMICs", NULL),
 62 };
 63 
 64 static const struct snd_soc_dapm_route bdw_rt5677_map[] = {
 65         /* Speakers */
 66         {"Speaker", NULL, "PDM1L"},
 67         {"Speaker", NULL, "PDM1R"},
 68 
 69         /* Headset jack connectors */
 70         {"Headphone", NULL, "LOUT1"},
 71         {"Headphone", NULL, "LOUT2"},
 72         {"IN1P", NULL, "Headset Mic"},
 73         {"IN1N", NULL, "Headset Mic"},
 74 
 75         /* Digital MICs
 76          * Local DMICs: the two DMICs on the mainboard
 77          * Remote DMICs: the two DMICs on the camera module
 78          */
 79         {"DMIC L1", NULL, "Remote DMICs"},
 80         {"DMIC R1", NULL, "Remote DMICs"},
 81         {"DMIC L2", NULL, "Local DMICs"},
 82         {"DMIC R2", NULL, "Local DMICs"},
 83 
 84         /* CODEC BE connections */
 85         {"SSP0 CODEC IN", NULL, "AIF1 Capture"},
 86         {"AIF1 Playback", NULL, "SSP0 CODEC OUT"},
 87 };
 88 
 89 static const struct snd_kcontrol_new bdw_rt5677_controls[] = {
 90         SOC_DAPM_PIN_SWITCH("Speaker"),
 91         SOC_DAPM_PIN_SWITCH("Headphone"),
 92         SOC_DAPM_PIN_SWITCH("Headset Mic"),
 93         SOC_DAPM_PIN_SWITCH("Local DMICs"),
 94         SOC_DAPM_PIN_SWITCH("Remote DMICs"),
 95 };
 96 
 97 
 98 static struct snd_soc_jack headphone_jack;
 99 static struct snd_soc_jack mic_jack;
100 
101 static struct snd_soc_jack_pin headphone_jack_pin = {
102         .pin    = "Headphone",
103         .mask   = SND_JACK_HEADPHONE,
104 };
105 
106 static struct snd_soc_jack_pin mic_jack_pin = {
107         .pin    = "Headset Mic",
108         .mask   = SND_JACK_MICROPHONE,
109 };
110 
111 static struct snd_soc_jack_gpio headphone_jack_gpio = {
112         .name                   = "plug-det",
113         .report                 = SND_JACK_HEADPHONE,
114         .debounce_time          = 200,
115 };
116 
117 static struct snd_soc_jack_gpio mic_jack_gpio = {
118         .name                   = "mic-present",
119         .report                 = SND_JACK_MICROPHONE,
120         .debounce_time          = 200,
121         .invert                 = 1,
122 };
123 
124 /* GPIO indexes defined by ACPI */
125 enum {
126         RT5677_GPIO_PLUG_DET            = 0,
127         RT5677_GPIO_MIC_PRESENT_L       = 1,
128         RT5677_GPIO_HOTWORD_DET_L       = 2,
129         RT5677_GPIO_DSP_INT             = 3,
130         RT5677_GPIO_HP_AMP_SHDN_L       = 4,
131 };
132 
133 static const struct acpi_gpio_params plug_det_gpio = { RT5677_GPIO_PLUG_DET, 0, false };
134 static const struct acpi_gpio_params mic_present_gpio = { RT5677_GPIO_MIC_PRESENT_L, 0, false };
135 static const struct acpi_gpio_params headphone_enable_gpio = { RT5677_GPIO_HP_AMP_SHDN_L, 0, false };
136 
137 static const struct acpi_gpio_mapping bdw_rt5677_gpios[] = {
138         { "plug-det-gpios", &plug_det_gpio, 1 },
139         { "mic-present-gpios", &mic_present_gpio, 1 },
140         { "headphone-enable-gpios", &headphone_enable_gpio, 1 },
141         { NULL },
142 };
143 
144 static int broadwell_ssp0_fixup(struct snd_soc_pcm_runtime *rtd,
145                         struct snd_pcm_hw_params *params)
146 {
147         struct snd_interval *rate = hw_param_interval(params,
148                         SNDRV_PCM_HW_PARAM_RATE);
149         struct snd_interval *channels = hw_param_interval(params,
150                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
151 
152         /* The ADSP will covert the FE rate to 48k, stereo */
153         rate->min = rate->max = 48000;
154         channels->min = channels->max = 2;
155 
156         /* set SSP0 to 16 bit */
157         snd_mask_set(&params->masks[SNDRV_PCM_HW_PARAM_FORMAT -
158                                     SNDRV_PCM_HW_PARAM_FIRST_MASK],
159                                     SNDRV_PCM_FORMAT_S16_LE);
160         return 0;
161 }
162 
163 static int bdw_rt5677_hw_params(struct snd_pcm_substream *substream,
164         struct snd_pcm_hw_params *params)
165 {
166         struct snd_soc_pcm_runtime *rtd = substream->private_data;
167         struct snd_soc_dai *codec_dai = rtd->codec_dai;
168         int ret;
169 
170         ret = snd_soc_dai_set_sysclk(codec_dai, RT5677_SCLK_S_MCLK, 24576000,
171                 SND_SOC_CLOCK_IN);
172         if (ret < 0) {
173                 dev_err(rtd->dev, "can't set codec sysclk configuration\n");
174                 return ret;
175         }
176 
177         return ret;
178 }
179 
180 static const struct snd_soc_ops bdw_rt5677_ops = {
181         .hw_params = bdw_rt5677_hw_params,
182 };
183 
184 static int bdw_rt5677_rtd_init(struct snd_soc_pcm_runtime *rtd)
185 {
186         struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, DRV_NAME);
187         struct sst_pdata *pdata = dev_get_platdata(component->dev);
188         struct sst_hsw *broadwell = pdata->dsp;
189         int ret;
190 
191         /* Set ADSP SSP port settings */
192         ret = sst_hsw_device_set_config(broadwell, SST_HSW_DEVICE_SSP_0,
193                 SST_HSW_DEVICE_MCLK_FREQ_24_MHZ,
194                 SST_HSW_DEVICE_CLOCK_MASTER, 9);
195         if (ret < 0) {
196                 dev_err(rtd->dev, "error: failed to set device config\n");
197                 return ret;
198         }
199 
200         return 0;
201 }
202 
203 static int bdw_rt5677_init(struct snd_soc_pcm_runtime *rtd)
204 {
205         struct bdw_rt5677_priv *bdw_rt5677 =
206                         snd_soc_card_get_drvdata(rtd->card);
207         struct snd_soc_component *component = rtd->codec_dai->component;
208         struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
209         int ret;
210 
211         ret = devm_acpi_dev_add_driver_gpios(component->dev, bdw_rt5677_gpios);
212         if (ret)
213                 dev_warn(component->dev, "Failed to add driver gpios\n");
214 
215         /* Enable codec ASRC function for Stereo DAC/Stereo1 ADC/DMIC/I2S1.
216          * The ASRC clock source is clk_i2s1_asrc.
217          */
218         rt5677_sel_asrc_clk_src(component, RT5677_DA_STEREO_FILTER |
219                         RT5677_AD_STEREO1_FILTER | RT5677_I2S1_SOURCE,
220                         RT5677_CLK_SEL_I2S1_ASRC);
221 
222         /* Request rt5677 GPIO for headphone amp control */
223         bdw_rt5677->gpio_hp_en = devm_gpiod_get(component->dev, "headphone-enable",
224                                                 GPIOD_OUT_LOW);
225         if (IS_ERR(bdw_rt5677->gpio_hp_en)) {
226                 dev_err(component->dev, "Can't find HP_AMP_SHDN_L gpio\n");
227                 return PTR_ERR(bdw_rt5677->gpio_hp_en);
228         }
229 
230         /* Create and initialize headphone jack */
231         if (!snd_soc_card_jack_new(rtd->card, "Headphone Jack",
232                         SND_JACK_HEADPHONE, &headphone_jack,
233                         &headphone_jack_pin, 1)) {
234                 headphone_jack_gpio.gpiod_dev = component->dev;
235                 if (snd_soc_jack_add_gpios(&headphone_jack, 1,
236                                 &headphone_jack_gpio))
237                         dev_err(component->dev, "Can't add headphone jack gpio\n");
238         } else {
239                 dev_err(component->dev, "Can't create headphone jack\n");
240         }
241 
242         /* Create and initialize mic jack */
243         if (!snd_soc_card_jack_new(rtd->card, "Mic Jack",
244                         SND_JACK_MICROPHONE, &mic_jack,
245                         &mic_jack_pin, 1)) {
246                 mic_jack_gpio.gpiod_dev = component->dev;
247                 if (snd_soc_jack_add_gpios(&mic_jack, 1, &mic_jack_gpio))
248                         dev_err(component->dev, "Can't add mic jack gpio\n");
249         } else {
250                 dev_err(component->dev, "Can't create mic jack\n");
251         }
252         bdw_rt5677->component = component;
253 
254         snd_soc_dapm_force_enable_pin(dapm, "MICBIAS1");
255         return 0;
256 }
257 
258 /* broadwell digital audio interface glue - connects codec <--> CPU */
259 static struct snd_soc_dai_link bdw_rt5677_dais[] = {
260         /* Front End DAI links */
261         {
262                 .name = "System PCM",
263                 .stream_name = "System Playback/Capture",
264                 .cpu_dai_name = "System Pin",
265                 .platform_name = "haswell-pcm-audio",
266                 .dynamic = 1,
267                 .codec_name = "snd-soc-dummy",
268                 .codec_dai_name = "snd-soc-dummy-dai",
269                 .init = bdw_rt5677_rtd_init,
270                 .trigger = {
271                         SND_SOC_DPCM_TRIGGER_POST,
272                         SND_SOC_DPCM_TRIGGER_POST
273                 },
274                 .dpcm_capture = 1,
275                 .dpcm_playback = 1,
276         },
277 
278         /* Back End DAI links */
279         {
280                 /* SSP0 - Codec */
281                 .name = "Codec",
282                 .id = 0,
283                 .cpu_dai_name = "snd-soc-dummy-dai",
284                 .platform_name = "snd-soc-dummy",
285                 .no_pcm = 1,
286                 .codec_name = "i2c-RT5677CE:00",
287                 .codec_dai_name = "rt5677-aif1",
288                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
289                         SND_SOC_DAIFMT_CBS_CFS,
290                 .ignore_suspend = 1,
291                 .ignore_pmdown_time = 1,
292                 .be_hw_params_fixup = broadwell_ssp0_fixup,
293                 .ops = &bdw_rt5677_ops,
294                 .dpcm_playback = 1,
295                 .dpcm_capture = 1,
296                 .init = bdw_rt5677_init,
297         },
298 };
299 
300 static int bdw_rt5677_suspend_pre(struct snd_soc_card *card)
301 {
302         struct bdw_rt5677_priv *bdw_rt5677 = snd_soc_card_get_drvdata(card);
303         struct snd_soc_dapm_context *dapm;
304 
305         if (bdw_rt5677->component) {
306                 dapm = snd_soc_component_get_dapm(bdw_rt5677->component);
307                 snd_soc_dapm_disable_pin(dapm, "MICBIAS1");
308         }
309         return 0;
310 }
311 
312 static int bdw_rt5677_resume_post(struct snd_soc_card *card)
313 {
314         struct bdw_rt5677_priv *bdw_rt5677 = snd_soc_card_get_drvdata(card);
315         struct snd_soc_dapm_context *dapm;
316 
317         if (bdw_rt5677->component) {
318                 dapm = snd_soc_component_get_dapm(bdw_rt5677->component);
319                 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS1");
320         }
321         return 0;
322 }
323 
324 /* ASoC machine driver for Broadwell DSP + RT5677 */
325 static struct snd_soc_card bdw_rt5677_card = {
326         .name = "bdw-rt5677",
327         .owner = THIS_MODULE,
328         .dai_link = bdw_rt5677_dais,
329         .num_links = ARRAY_SIZE(bdw_rt5677_dais),
330         .dapm_widgets = bdw_rt5677_widgets,
331         .num_dapm_widgets = ARRAY_SIZE(bdw_rt5677_widgets),
332         .dapm_routes = bdw_rt5677_map,
333         .num_dapm_routes = ARRAY_SIZE(bdw_rt5677_map),
334         .controls = bdw_rt5677_controls,
335         .num_controls = ARRAY_SIZE(bdw_rt5677_controls),
336         .fully_routed = true,
337         .suspend_pre = bdw_rt5677_suspend_pre,
338         .resume_post = bdw_rt5677_resume_post,
339 };
340 
341 static int bdw_rt5677_probe(struct platform_device *pdev)
342 {
343         struct bdw_rt5677_priv *bdw_rt5677;
344 
345         bdw_rt5677_card.dev = &pdev->dev;
346 
347         /* Allocate driver private struct */
348         bdw_rt5677 = devm_kzalloc(&pdev->dev, sizeof(struct bdw_rt5677_priv),
349                 GFP_KERNEL);
350         if (!bdw_rt5677) {
351                 dev_err(&pdev->dev, "Can't allocate bdw_rt5677\n");
352                 return -ENOMEM;
353         }
354 
355         snd_soc_card_set_drvdata(&bdw_rt5677_card, bdw_rt5677);
356 
357         return devm_snd_soc_register_card(&pdev->dev, &bdw_rt5677_card);
358 }
359 
360 static struct platform_driver bdw_rt5677_audio = {
361         .probe = bdw_rt5677_probe,
362         .driver = {
363                 .name = "bdw-rt5677",
364         },
365 };
366 
367 module_platform_driver(bdw_rt5677_audio)
368 
369 /* Module information */
370 MODULE_AUTHOR("Ben Zhang");
371 MODULE_DESCRIPTION("Intel Broadwell RT5677 machine driver");
372 MODULE_LICENSE("GPL v2");
373 MODULE_ALIAS("platform:bdw-rt5677");
374 

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