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Linux/sound/soc/amd/acp-da7219-max98357a.c

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  1 /*
  2  * Machine driver for AMD ACP Audio engine using DA7219 & MAX98357 codec
  3  *
  4  * Copyright 2017 Advanced Micro Devices, Inc.
  5  *
  6  * Permission is hereby granted, free of charge, to any person obtaining a
  7  * copy of this software and associated documentation files (the "Software"),
  8  * to deal in the Software without restriction, including without limitation
  9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 10  * and/or sell copies of the Software, and to permit persons to whom the
 11  * Software is furnished to do so, subject to the following conditions:
 12  *
 13  * The above copyright notice and this permission notice shall be included in
 14  * all copies or substantial portions of the Software.
 15  *
 16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 22  * OTHER DEALINGS IN THE SOFTWARE.
 23  *
 24  */
 25 
 26 #include <sound/core.h>
 27 #include <sound/soc.h>
 28 #include <sound/pcm.h>
 29 #include <sound/pcm_params.h>
 30 #include <sound/soc-dapm.h>
 31 #include <sound/jack.h>
 32 #include <linux/clk.h>
 33 #include <linux/gpio.h>
 34 #include <linux/module.h>
 35 #include <linux/i2c.h>
 36 #include <linux/input.h>
 37 #include <linux/acpi.h>
 38 
 39 #include "acp.h"
 40 #include "../codecs/da7219.h"
 41 #include "../codecs/da7219-aad.h"
 42 
 43 #define CZ_PLAT_CLK 25000000
 44 #define DUAL_CHANNEL            2
 45 
 46 static struct snd_soc_jack cz_jack;
 47 static struct clk *da7219_dai_clk;
 48 extern int bt_uart_enable;
 49 
 50 static int cz_da7219_init(struct snd_soc_pcm_runtime *rtd)
 51 {
 52         int ret;
 53         struct snd_soc_card *card = rtd->card;
 54         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 55         struct snd_soc_component *component = codec_dai->component;
 56 
 57         dev_info(rtd->dev, "codec dai name = %s\n", codec_dai->name);
 58 
 59         ret = snd_soc_dai_set_sysclk(codec_dai, DA7219_CLKSRC_MCLK,
 60                                      CZ_PLAT_CLK, SND_SOC_CLOCK_IN);
 61         if (ret < 0) {
 62                 dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
 63                 return ret;
 64         }
 65 
 66         ret = snd_soc_dai_set_pll(codec_dai, 0, DA7219_SYSCLK_PLL,
 67                                   CZ_PLAT_CLK, DA7219_PLL_FREQ_OUT_98304);
 68         if (ret < 0) {
 69                 dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
 70                 return ret;
 71         }
 72 
 73         da7219_dai_clk = clk_get(component->dev, "da7219-dai-clks");
 74 
 75         ret = snd_soc_card_jack_new(card, "Headset Jack",
 76                                 SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
 77                                 SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 78                                 SND_JACK_BTN_2 | SND_JACK_BTN_3,
 79                                 &cz_jack, NULL, 0);
 80         if (ret) {
 81                 dev_err(card->dev, "HP jack creation failed %d\n", ret);
 82                 return ret;
 83         }
 84 
 85         snd_jack_set_key(cz_jack.jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
 86         snd_jack_set_key(cz_jack.jack, SND_JACK_BTN_1, KEY_VOLUMEUP);
 87         snd_jack_set_key(cz_jack.jack, SND_JACK_BTN_2, KEY_VOLUMEDOWN);
 88         snd_jack_set_key(cz_jack.jack, SND_JACK_BTN_3, KEY_VOICECOMMAND);
 89 
 90         da7219_aad_jack_det(component, &cz_jack);
 91 
 92         return 0;
 93 }
 94 
 95 static int da7219_clk_enable(struct snd_pcm_substream *substream)
 96 {
 97         int ret = 0;
 98         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 99 
100         ret = clk_prepare_enable(da7219_dai_clk);
101         if (ret < 0) {
102                 dev_err(rtd->dev, "can't enable master clock %d\n", ret);
103                 return ret;
104         }
105 
106         return ret;
107 }
108 
109 static void da7219_clk_disable(void)
110 {
111         clk_disable_unprepare(da7219_dai_clk);
112 }
113 
114 static const unsigned int channels[] = {
115         DUAL_CHANNEL,
116 };
117 
118 static const unsigned int rates[] = {
119         48000,
120 };
121 
122 static const struct snd_pcm_hw_constraint_list constraints_rates = {
123         .count = ARRAY_SIZE(rates),
124         .list  = rates,
125         .mask = 0,
126 };
127 
128 static const struct snd_pcm_hw_constraint_list constraints_channels = {
129         .count = ARRAY_SIZE(channels),
130         .list = channels,
131         .mask = 0,
132 };
133 
134 static int cz_da7219_startup(struct snd_pcm_substream *substream)
135 {
136         struct snd_pcm_runtime *runtime = substream->runtime;
137         struct snd_soc_pcm_runtime *rtd = substream->private_data;
138         struct snd_soc_card *card = rtd->card;
139         struct acp_platform_info *machine = snd_soc_card_get_drvdata(card);
140 
141         /*
142          * On this platform for PCM device we support stereo
143          */
144 
145         runtime->hw.channels_max = DUAL_CHANNEL;
146         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
147                                    &constraints_channels);
148         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
149                                    &constraints_rates);
150 
151         machine->i2s_instance = I2S_BT_INSTANCE;
152         return da7219_clk_enable(substream);
153 }
154 
155 static void cz_da7219_shutdown(struct snd_pcm_substream *substream)
156 {
157         da7219_clk_disable();
158 }
159 
160 static int cz_max_startup(struct snd_pcm_substream *substream)
161 {
162         struct snd_soc_pcm_runtime *rtd = substream->private_data;
163         struct snd_soc_card *card = rtd->card;
164         struct acp_platform_info *machine = snd_soc_card_get_drvdata(card);
165 
166         machine->i2s_instance = I2S_SP_INSTANCE;
167         return da7219_clk_enable(substream);
168 }
169 
170 static void cz_max_shutdown(struct snd_pcm_substream *substream)
171 {
172         da7219_clk_disable();
173 }
174 
175 static int cz_dmic_startup(struct snd_pcm_substream *substream)
176 {
177         struct snd_soc_pcm_runtime *rtd = substream->private_data;
178         struct snd_soc_card *card = rtd->card;
179         struct acp_platform_info *machine = snd_soc_card_get_drvdata(card);
180 
181         machine->i2s_instance = I2S_SP_INSTANCE;
182         return da7219_clk_enable(substream);
183 }
184 
185 static void cz_dmic_shutdown(struct snd_pcm_substream *substream)
186 {
187         da7219_clk_disable();
188 }
189 
190 static const struct snd_soc_ops cz_da7219_cap_ops = {
191         .startup = cz_da7219_startup,
192         .shutdown = cz_da7219_shutdown,
193 };
194 
195 static const struct snd_soc_ops cz_max_play_ops = {
196         .startup = cz_max_startup,
197         .shutdown = cz_max_shutdown,
198 };
199 
200 static const struct snd_soc_ops cz_dmic_cap_ops = {
201         .startup = cz_dmic_startup,
202         .shutdown = cz_dmic_shutdown,
203 };
204 
205 static struct snd_soc_dai_link cz_dai_7219_98357[] = {
206         {
207                 .name = "amd-da7219-play-cap",
208                 .stream_name = "Playback and Capture",
209                 .platform_name = "acp_audio_dma.0.auto",
210                 .cpu_dai_name = "designware-i2s.3.auto",
211                 .codec_dai_name = "da7219-hifi",
212                 .codec_name = "i2c-DLGS7219:00",
213                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
214                                 | SND_SOC_DAIFMT_CBM_CFM,
215                 .init = cz_da7219_init,
216                 .dpcm_playback = 1,
217                 .dpcm_capture = 1,
218                 .ops = &cz_da7219_cap_ops,
219         },
220         {
221                 .name = "amd-max98357-play",
222                 .stream_name = "HiFi Playback",
223                 .platform_name = "acp_audio_dma.0.auto",
224                 .cpu_dai_name = "designware-i2s.1.auto",
225                 .codec_dai_name = "HiFi",
226                 .codec_name = "MX98357A:00",
227                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
228                                 | SND_SOC_DAIFMT_CBM_CFM,
229                 .dpcm_playback = 1,
230                 .ops = &cz_max_play_ops,
231         },
232         {
233                 .name = "dmic",
234                 .stream_name = "DMIC Capture",
235                 .platform_name = "acp_audio_dma.0.auto",
236                 .cpu_dai_name = "designware-i2s.2.auto",
237                 .codec_dai_name = "adau7002-hifi",
238                 .codec_name = "ADAU7002:00",
239                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
240                                 | SND_SOC_DAIFMT_CBM_CFM,
241                 .dpcm_capture = 1,
242                 .ops = &cz_dmic_cap_ops,
243         },
244 };
245 
246 static const struct snd_soc_dapm_widget cz_widgets[] = {
247         SND_SOC_DAPM_HP("Headphones", NULL),
248         SND_SOC_DAPM_SPK("Speakers", NULL),
249         SND_SOC_DAPM_MIC("Headset Mic", NULL),
250         SND_SOC_DAPM_MIC("Int Mic", NULL),
251 };
252 
253 static const struct snd_soc_dapm_route cz_audio_route[] = {
254         {"Headphones", NULL, "HPL"},
255         {"Headphones", NULL, "HPR"},
256         {"MIC", NULL, "Headset Mic"},
257         {"Speakers", NULL, "Speaker"},
258         {"PDM_DAT", NULL, "Int Mic"},
259 };
260 
261 static const struct snd_kcontrol_new cz_mc_controls[] = {
262         SOC_DAPM_PIN_SWITCH("Headphones"),
263         SOC_DAPM_PIN_SWITCH("Speakers"),
264         SOC_DAPM_PIN_SWITCH("Headset Mic"),
265         SOC_DAPM_PIN_SWITCH("Int Mic"),
266 };
267 
268 static struct snd_soc_card cz_card = {
269         .name = "acpd7219m98357",
270         .owner = THIS_MODULE,
271         .dai_link = cz_dai_7219_98357,
272         .num_links = ARRAY_SIZE(cz_dai_7219_98357),
273         .dapm_widgets = cz_widgets,
274         .num_dapm_widgets = ARRAY_SIZE(cz_widgets),
275         .dapm_routes = cz_audio_route,
276         .num_dapm_routes = ARRAY_SIZE(cz_audio_route),
277         .controls = cz_mc_controls,
278         .num_controls = ARRAY_SIZE(cz_mc_controls),
279 };
280 
281 static int cz_probe(struct platform_device *pdev)
282 {
283         int ret;
284         struct snd_soc_card *card;
285         struct acp_platform_info *machine;
286 
287         machine = devm_kzalloc(&pdev->dev, sizeof(struct acp_platform_info),
288                                GFP_KERNEL);
289         if (!machine)
290                 return -ENOMEM;
291         card = &cz_card;
292         cz_card.dev = &pdev->dev;
293         platform_set_drvdata(pdev, card);
294         snd_soc_card_set_drvdata(card, machine);
295         ret = devm_snd_soc_register_card(&pdev->dev, &cz_card);
296         if (ret) {
297                 dev_err(&pdev->dev,
298                                 "devm_snd_soc_register_card(%s) failed: %d\n",
299                                 cz_card.name, ret);
300                 return ret;
301         }
302         bt_uart_enable = !device_property_read_bool(&pdev->dev,
303                                                     "bt-pad-enable");
304         return 0;
305 }
306 
307 static const struct acpi_device_id cz_audio_acpi_match[] = {
308         { "AMD7219", 0 },
309         {},
310 };
311 MODULE_DEVICE_TABLE(acpi, cz_audio_acpi_match);
312 
313 static struct platform_driver cz_pcm_driver = {
314         .driver = {
315                 .name = "cz-da7219-max98357a",
316                 .acpi_match_table = ACPI_PTR(cz_audio_acpi_match),
317                 .pm = &snd_soc_pm_ops,
318         },
319         .probe = cz_probe,
320 };
321 
322 module_platform_driver(cz_pcm_driver);
323 
324 MODULE_AUTHOR("akshu.agrawal@amd.com");
325 MODULE_DESCRIPTION("DA7219 & MAX98357A audio support");
326 MODULE_LICENSE("GPL v2");
327 

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