1 // SPDX-License-Identifier: GPL-2.0-only
2 //
3 // Copyright(c) 2023 Intel Corporation. All rights reserved.
4 //
5 // Authors: Cezary Rojewski <cezary.rojewski@intel.com>
6 // Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
7 //
8
9 #include <linux/device.h>
10 #include <linux/gpio/consumer.h>
11 #include <linux/input.h>
12 #include <linux/module.h>
13 #include <linux/platform_device.h>
14 #include <linux/processor.h>
15 #include <linux/slab.h>
16 #include <sound/jack.h>
17 #include <sound/pcm.h>
18 #include <sound/pcm_params.h>
19 #include <sound/soc.h>
20 #include <sound/soc-acpi.h>
21 #include <asm/intel-family.h>
22
23 #define ES8336_CODEC_DAI "ES8316 HiFi"
24
25 struct avs_card_drvdata {
26 struct snd_soc_jack jack;
27 struct gpio_desc *gpiod;
28 };
29
30 static const struct acpi_gpio_params enable_gpio = { 0, 0, true };
31
32 static const struct acpi_gpio_mapping speaker_gpios[] = {
33 { "speaker-enable-gpios", &enable_gpio, 1, ACPI_GPIO_QUIRK_ONLY_GPIOIO },
34 { }
35 };
36
avs_es8336_speaker_power_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)37 static int avs_es8336_speaker_power_event(struct snd_soc_dapm_widget *w,
38 struct snd_kcontrol *kcontrol, int event)
39 {
40 struct snd_soc_card *card = w->dapm->card;
41 struct avs_card_drvdata *data;
42 bool speaker_en;
43
44 data = snd_soc_card_get_drvdata(card);
45 /* As enable_gpio has active_low=true, logic is inverted. */
46 speaker_en = !SND_SOC_DAPM_EVENT_ON(event);
47
48 gpiod_set_value_cansleep(data->gpiod, speaker_en);
49 return 0;
50 }
51
52 static const struct snd_soc_dapm_widget card_widgets[] = {
53 SND_SOC_DAPM_SPK("Speaker", NULL),
54 SND_SOC_DAPM_HP("Headphone", NULL),
55 SND_SOC_DAPM_MIC("Headset Mic", NULL),
56 SND_SOC_DAPM_MIC("Internal Mic", NULL),
57
58 SND_SOC_DAPM_SUPPLY("Speaker Power", SND_SOC_NOPM, 0, 0,
59 avs_es8336_speaker_power_event,
60 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
61 };
62
63 static const struct snd_soc_dapm_route card_routes[] = {
64 {"Headphone", NULL, "HPOL"},
65 {"Headphone", NULL, "HPOR"},
66
67 /*
68 * There is no separate speaker output instead the speakers are muxed to
69 * the HP outputs. The mux is controlled by the "Speaker Power" widget.
70 */
71 {"Speaker", NULL, "HPOL"},
72 {"Speaker", NULL, "HPOR"},
73 {"Speaker", NULL, "Speaker Power"},
74
75 /* Mic route map */
76 {"MIC1", NULL, "Internal Mic"},
77 {"MIC2", NULL, "Headset Mic"},
78 };
79
80 static const struct snd_kcontrol_new card_controls[] = {
81 SOC_DAPM_PIN_SWITCH("Speaker"),
82 SOC_DAPM_PIN_SWITCH("Headphone"),
83 SOC_DAPM_PIN_SWITCH("Headset Mic"),
84 SOC_DAPM_PIN_SWITCH("Internal Mic"),
85 };
86
87 static struct snd_soc_jack_pin card_headset_pins[] = {
88 {
89 .pin = "Headphone",
90 .mask = SND_JACK_HEADPHONE,
91 },
92 {
93 .pin = "Headset Mic",
94 .mask = SND_JACK_MICROPHONE,
95 },
96 };
97
avs_es8336_codec_init(struct snd_soc_pcm_runtime * runtime)98 static int avs_es8336_codec_init(struct snd_soc_pcm_runtime *runtime)
99 {
100 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(runtime, 0);
101 struct snd_soc_component *component = codec_dai->component;
102 struct snd_soc_card *card = runtime->card;
103 struct snd_soc_jack_pin *pins;
104 struct avs_card_drvdata *data;
105 struct gpio_desc *gpiod;
106 int num_pins, ret;
107
108 data = snd_soc_card_get_drvdata(card);
109 num_pins = ARRAY_SIZE(card_headset_pins);
110
111 pins = devm_kmemdup(card->dev, card_headset_pins, sizeof(*pins) * num_pins, GFP_KERNEL);
112 if (!pins)
113 return -ENOMEM;
114
115 ret = snd_soc_card_jack_new_pins(card, "Headset", SND_JACK_HEADSET | SND_JACK_BTN_0,
116 &data->jack, pins, num_pins);
117 if (ret)
118 return ret;
119
120 ret = devm_acpi_dev_add_driver_gpios(codec_dai->dev, speaker_gpios);
121 if (ret)
122 dev_warn(codec_dai->dev, "Unable to add GPIO mapping table\n");
123
124 gpiod = gpiod_get_optional(codec_dai->dev, "speaker-enable", GPIOD_OUT_LOW);
125 if (IS_ERR(gpiod))
126 return dev_err_probe(codec_dai->dev, PTR_ERR(gpiod), "Get gpiod failed: %ld\n",
127 PTR_ERR(gpiod));
128
129 data->gpiod = gpiod;
130 snd_jack_set_key(data->jack.jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
131 snd_soc_component_set_jack(component, &data->jack, NULL);
132
133 card->dapm.idle_bias_off = true;
134
135 return 0;
136 }
137
avs_es8336_codec_exit(struct snd_soc_pcm_runtime * runtime)138 static void avs_es8336_codec_exit(struct snd_soc_pcm_runtime *runtime)
139 {
140 struct avs_card_drvdata *data = snd_soc_card_get_drvdata(runtime->card);
141 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(runtime, 0);
142
143 snd_soc_component_set_jack(codec_dai->component, NULL, NULL);
144 gpiod_put(data->gpiod);
145 }
146
avs_es8336_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)147 static int avs_es8336_hw_params(struct snd_pcm_substream *substream,
148 struct snd_pcm_hw_params *params)
149 {
150 struct snd_soc_pcm_runtime *runtime = asoc_substream_to_rtd(substream);
151 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(runtime, 0);
152 int clk_freq;
153 int ret;
154
155 switch (boot_cpu_data.x86_model) {
156 case INTEL_FAM6_KABYLAKE_L:
157 case INTEL_FAM6_KABYLAKE:
158 clk_freq = 24000000;
159 break;
160 default:
161 clk_freq = 19200000;
162 break;
163 }
164
165 ret = snd_soc_dai_set_sysclk(codec_dai, 1, clk_freq, SND_SOC_CLOCK_OUT);
166 if (ret < 0)
167 dev_err(runtime->dev, "Set codec sysclk failed: %d\n", ret);
168
169 return ret;
170 }
171
172 static const struct snd_soc_ops avs_es8336_ops = {
173 .hw_params = avs_es8336_hw_params,
174 };
175
avs_es8336_be_fixup(struct snd_soc_pcm_runtime * runtime,struct snd_pcm_hw_params * params)176 static int avs_es8336_be_fixup(struct snd_soc_pcm_runtime *runtime,
177 struct snd_pcm_hw_params *params)
178 {
179 struct snd_interval *rate, *channels;
180 struct snd_mask *fmt;
181
182 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
183 channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
184 fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
185
186 /* The ADSP will convert the FE rate to 48k, stereo */
187 rate->min = rate->max = 48000;
188 channels->min = channels->max = 2;
189
190 /* set SSPN to 24 bit */
191 snd_mask_none(fmt);
192 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_3LE);
193
194 return 0;
195 }
avs_create_dai_link(struct device * dev,const char * platform_name,int ssp_port,struct snd_soc_dai_link ** dai_link)196 static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port,
197 struct snd_soc_dai_link **dai_link)
198 {
199 struct snd_soc_dai_link_component *platform;
200 struct snd_soc_dai_link *dl;
201
202 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);
203 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
204 if (!dl || !platform)
205 return -ENOMEM;
206
207 platform->name = platform_name;
208
209 dl->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-Codec", ssp_port);
210 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
211 dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL);
212 if (!dl->name || !dl->cpus || !dl->codecs)
213 return -ENOMEM;
214
215 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin", ssp_port);
216 dl->codecs->name = devm_kasprintf(dev, GFP_KERNEL, "i2c-ESSX8336:00");
217 dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, ES8336_CODEC_DAI);
218 if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name)
219 return -ENOMEM;
220
221 dl->num_cpus = 1;
222 dl->num_codecs = 1;
223 dl->platforms = platform;
224 dl->num_platforms = 1;
225 dl->id = 0;
226 dl->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBC_CFC;
227 dl->init = avs_es8336_codec_init;
228 dl->exit = avs_es8336_codec_exit;
229 dl->be_hw_params_fixup = avs_es8336_be_fixup;
230 dl->ops = &avs_es8336_ops;
231 dl->nonatomic = 1;
232 dl->no_pcm = 1;
233 dl->dpcm_capture = 1;
234 dl->dpcm_playback = 1;
235
236 *dai_link = dl;
237
238 return 0;
239 }
240
avs_card_suspend_pre(struct snd_soc_card * card)241 static int avs_card_suspend_pre(struct snd_soc_card *card)
242 {
243 struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, ES8336_CODEC_DAI);
244
245 return snd_soc_component_set_jack(codec_dai->component, NULL, NULL);
246 }
247
avs_card_resume_post(struct snd_soc_card * card)248 static int avs_card_resume_post(struct snd_soc_card *card)
249 {
250 struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, ES8336_CODEC_DAI);
251 struct avs_card_drvdata *data = snd_soc_card_get_drvdata(card);
252
253 return snd_soc_component_set_jack(codec_dai->component, &data->jack, NULL);
254 }
255
avs_es8336_probe(struct platform_device * pdev)256 static int avs_es8336_probe(struct platform_device *pdev)
257 {
258 struct snd_soc_dai_link *dai_link;
259 struct snd_soc_acpi_mach *mach;
260 struct avs_card_drvdata *data;
261 struct snd_soc_card *card;
262 struct device *dev = &pdev->dev;
263 const char *pname;
264 int ssp_port, ret;
265
266 mach = dev_get_platdata(dev);
267 pname = mach->mach_params.platform;
268 ssp_port = __ffs(mach->mach_params.i2s_link_mask);
269
270 ret = avs_create_dai_link(dev, pname, ssp_port, &dai_link);
271 if (ret) {
272 dev_err(dev, "Failed to create dai link: %d", ret);
273 return ret;
274 }
275
276 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
277 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
278 if (!data || !card)
279 return -ENOMEM;
280
281 card->name = "avs_es8336";
282 card->dev = dev;
283 card->owner = THIS_MODULE;
284 card->suspend_pre = avs_card_suspend_pre;
285 card->resume_post = avs_card_resume_post;
286 card->dai_link = dai_link;
287 card->num_links = 1;
288 card->controls = card_controls;
289 card->num_controls = ARRAY_SIZE(card_controls);
290 card->dapm_widgets = card_widgets;
291 card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
292 card->dapm_routes = card_routes;
293 card->num_dapm_routes = ARRAY_SIZE(card_routes);
294 card->fully_routed = true;
295 snd_soc_card_set_drvdata(card, data);
296
297 ret = snd_soc_fixup_dai_links_platform_name(card, pname);
298 if (ret)
299 return ret;
300
301 return devm_snd_soc_register_card(dev, card);
302 }
303
304 static struct platform_driver avs_es8336_driver = {
305 .probe = avs_es8336_probe,
306 .driver = {
307 .name = "avs_es8336",
308 .pm = &snd_soc_pm_ops,
309 },
310 };
311
312 module_platform_driver(avs_es8336_driver);
313
314 MODULE_LICENSE("GPL");
315 MODULE_ALIAS("platform:avs_es8336");
316