1 // SPDX-License-Identifier: GPL-2.0-only
2 //
3 // Copyright(c) 2021-2022 Intel Corporation. All rights reserved.
4 //
5 // Author: Cezary Rojewski <cezary.rojewski@intel.com>
6 //
7
8 #include <linux/module.h>
9 #include <linux/platform_device.h>
10 #include <sound/jack.h>
11 #include <sound/pcm.h>
12 #include <sound/pcm_params.h>
13 #include <sound/soc.h>
14 #include <sound/soc-acpi.h>
15 #include <sound/soc-dapm.h>
16 #include <uapi/linux/input-event-codes.h>
17 #include "../../../codecs/da7219.h"
18 #include "../../../codecs/da7219-aad.h"
19
20 #define DA7219_DAI_NAME "da7219-hifi"
21
22 static const struct snd_kcontrol_new card_controls[] = {
23 SOC_DAPM_PIN_SWITCH("Headphone Jack"),
24 SOC_DAPM_PIN_SWITCH("Headset Mic"),
25 };
26
platform_clock_control(struct snd_soc_dapm_widget * w,struct snd_kcontrol * k,int event)27 static int platform_clock_control(struct snd_soc_dapm_widget *w,
28 struct snd_kcontrol *k, int event)
29 {
30 struct snd_soc_dapm_context *dapm = w->dapm;
31 struct snd_soc_card *card = dapm->card;
32 struct snd_soc_dai *codec_dai;
33 int ret = 0;
34
35 codec_dai = snd_soc_card_get_codec_dai(card, DA7219_DAI_NAME);
36 if (!codec_dai) {
37 dev_err(card->dev, "Codec dai not found. Unable to set/unset codec pll\n");
38 return -EIO;
39 }
40
41 if (SND_SOC_DAPM_EVENT_OFF(event)) {
42 ret = snd_soc_dai_set_pll(codec_dai, 0, DA7219_SYSCLK_MCLK, 0, 0);
43 if (ret)
44 dev_err(card->dev, "failed to stop PLL: %d\n", ret);
45 } else if (SND_SOC_DAPM_EVENT_ON(event)) {
46 ret = snd_soc_dai_set_pll(codec_dai, 0, DA7219_SYSCLK_PLL_SRM,
47 0, DA7219_PLL_FREQ_OUT_98304);
48 if (ret)
49 dev_err(card->dev, "failed to start PLL: %d\n", ret);
50 }
51
52 return ret;
53 }
54
55 static const struct snd_soc_dapm_widget card_widgets[] = {
56 SND_SOC_DAPM_HP("Headphone Jack", NULL),
57 SND_SOC_DAPM_MIC("Headset Mic", NULL),
58 SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, platform_clock_control,
59 SND_SOC_DAPM_POST_PMD | SND_SOC_DAPM_PRE_PMU),
60 };
61
62 static const struct snd_soc_dapm_route card_base_routes[] = {
63 /* HP jack connectors - unknown if we have jack detection */
64 {"Headphone Jack", NULL, "HPL"},
65 {"Headphone Jack", NULL, "HPR"},
66
67 {"MIC", NULL, "Headset Mic"},
68
69 { "Headphone Jack", NULL, "Platform Clock" },
70 { "Headset Mic", NULL, "Platform Clock" },
71 };
72
avs_da7219_codec_init(struct snd_soc_pcm_runtime * runtime)73 static int avs_da7219_codec_init(struct snd_soc_pcm_runtime *runtime)
74 {
75 struct snd_soc_component *component = asoc_rtd_to_codec(runtime, 0)->component;
76 struct snd_soc_card *card = runtime->card;
77 struct snd_soc_jack *jack;
78 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(runtime, 0);
79 int clk_freq;
80 int ret;
81
82 jack = snd_soc_card_get_drvdata(card);
83 clk_freq = 19200000;
84
85 ret = snd_soc_dai_set_sysclk(codec_dai, DA7219_CLKSRC_MCLK, clk_freq, SND_SOC_CLOCK_IN);
86 if (ret) {
87 dev_err(card->dev, "can't set codec sysclk configuration\n");
88 return ret;
89 }
90
91 /*
92 * Headset buttons map to the google Reference headset.
93 * These can be configured by userspace.
94 */
95 ret = snd_soc_card_jack_new(card, "Headset Jack",
96 SND_JACK_HEADSET | SND_JACK_BTN_0 |
97 SND_JACK_BTN_1 | SND_JACK_BTN_2 |
98 SND_JACK_BTN_3 | SND_JACK_LINEOUT, jack);
99 if (ret) {
100 dev_err(card->dev, "Headset Jack creation failed: %d\n", ret);
101 return ret;
102 }
103
104 snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
105 snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOLUMEUP);
106 snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEDOWN);
107 snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOICECOMMAND);
108
109 da7219_aad_jack_det(component, jack);
110
111 return 0;
112 }
113
avs_create_dai_link(struct device * dev,const char * platform_name,int ssp_port,struct snd_soc_dai_link ** dai_link)114 static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port,
115 struct snd_soc_dai_link **dai_link)
116 {
117 struct snd_soc_dai_link_component *platform;
118 struct snd_soc_dai_link *dl;
119
120 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);
121 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
122 if (!dl || !platform)
123 return -ENOMEM;
124
125 platform->name = platform_name;
126
127 dl->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-Codec", ssp_port);
128 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
129 dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL);
130 if (!dl->name || !dl->cpus || !dl->codecs)
131 return -ENOMEM;
132
133 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin", ssp_port);
134 dl->codecs->name = devm_kasprintf(dev, GFP_KERNEL, "i2c-DLGS7219:00");
135 dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, DA7219_DAI_NAME);
136 if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name)
137 return -ENOMEM;
138
139 dl->num_cpus = 1;
140 dl->num_codecs = 1;
141 dl->platforms = platform;
142 dl->num_platforms = 1;
143 dl->id = 0;
144 dl->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS;
145 dl->init = avs_da7219_codec_init;
146 dl->nonatomic = 1;
147 dl->no_pcm = 1;
148 dl->dpcm_capture = 1;
149 dl->dpcm_playback = 1;
150
151 *dai_link = dl;
152
153 return 0;
154 }
155
avs_create_dapm_routes(struct device * dev,int ssp_port,struct snd_soc_dapm_route ** routes,int * num_routes)156 static int avs_create_dapm_routes(struct device *dev, int ssp_port,
157 struct snd_soc_dapm_route **routes, int *num_routes)
158 {
159 struct snd_soc_dapm_route *dr;
160 const int num_base = ARRAY_SIZE(card_base_routes);
161 const int num_dr = num_base + 2;
162 int idx;
163
164 dr = devm_kcalloc(dev, num_dr, sizeof(*dr), GFP_KERNEL);
165 if (!dr)
166 return -ENOMEM;
167
168 memcpy(dr, card_base_routes, num_base * sizeof(*dr));
169
170 idx = num_base;
171 dr[idx].sink = devm_kasprintf(dev, GFP_KERNEL, "Playback");
172 dr[idx].source = devm_kasprintf(dev, GFP_KERNEL, "ssp%d Tx", ssp_port);
173 if (!dr[idx].sink || !dr[idx].source)
174 return -ENOMEM;
175
176 idx++;
177 dr[idx].sink = devm_kasprintf(dev, GFP_KERNEL, "ssp%d Rx", ssp_port);
178 dr[idx].source = devm_kasprintf(dev, GFP_KERNEL, "Capture");
179 if (!dr[idx].sink || !dr[idx].source)
180 return -ENOMEM;
181
182 *routes = dr;
183 *num_routes = num_dr;
184
185 return 0;
186 }
187
avs_card_set_jack(struct snd_soc_card * card,struct snd_soc_jack * jack)188 static int avs_card_set_jack(struct snd_soc_card *card, struct snd_soc_jack *jack)
189 {
190 struct snd_soc_component *component;
191
192 for_each_card_components(card, component)
193 snd_soc_component_set_jack(component, jack, NULL);
194 return 0;
195 }
196
avs_card_remove(struct snd_soc_card * card)197 static int avs_card_remove(struct snd_soc_card *card)
198 {
199 return avs_card_set_jack(card, NULL);
200 }
201
avs_card_suspend_pre(struct snd_soc_card * card)202 static int avs_card_suspend_pre(struct snd_soc_card *card)
203 {
204 return avs_card_set_jack(card, NULL);
205 }
206
avs_card_resume_post(struct snd_soc_card * card)207 static int avs_card_resume_post(struct snd_soc_card *card)
208 {
209 struct snd_soc_jack *jack = snd_soc_card_get_drvdata(card);
210
211 return avs_card_set_jack(card, jack);
212 }
213
avs_da7219_probe(struct platform_device * pdev)214 static int avs_da7219_probe(struct platform_device *pdev)
215 {
216 struct snd_soc_dapm_route *routes;
217 struct snd_soc_dai_link *dai_link;
218 struct snd_soc_acpi_mach *mach;
219 struct snd_soc_card *card;
220 struct snd_soc_jack *jack;
221 struct device *dev = &pdev->dev;
222 const char *pname;
223 int num_routes, ssp_port, ret;
224
225 mach = dev_get_platdata(dev);
226 pname = mach->mach_params.platform;
227 ssp_port = __ffs(mach->mach_params.i2s_link_mask);
228
229 ret = avs_create_dai_link(dev, pname, ssp_port, &dai_link);
230 if (ret) {
231 dev_err(dev, "Failed to create dai link: %d", ret);
232 return ret;
233 }
234
235 ret = avs_create_dapm_routes(dev, ssp_port, &routes, &num_routes);
236 if (ret) {
237 dev_err(dev, "Failed to create dapm routes: %d", ret);
238 return ret;
239 }
240
241 jack = devm_kzalloc(dev, sizeof(*jack), GFP_KERNEL);
242 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
243 if (!jack || !card)
244 return -ENOMEM;
245
246 card->name = "avs_da7219";
247 card->dev = dev;
248 card->owner = THIS_MODULE;
249 card->remove = avs_card_remove;
250 card->suspend_pre = avs_card_suspend_pre;
251 card->resume_post = avs_card_resume_post;
252 card->dai_link = dai_link;
253 card->num_links = 1;
254 card->controls = card_controls;
255 card->num_controls = ARRAY_SIZE(card_controls);
256 card->dapm_widgets = card_widgets;
257 card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
258 card->dapm_routes = routes;
259 card->num_dapm_routes = num_routes;
260 card->fully_routed = true;
261 snd_soc_card_set_drvdata(card, jack);
262
263 ret = snd_soc_fixup_dai_links_platform_name(card, pname);
264 if (ret)
265 return ret;
266
267 return devm_snd_soc_register_card(dev, card);
268 }
269
270 static struct platform_driver avs_da7219_driver = {
271 .probe = avs_da7219_probe,
272 .driver = {
273 .name = "avs_da7219",
274 .pm = &snd_soc_pm_ops,
275 },
276 };
277
278 module_platform_driver(avs_da7219_driver);
279
280 MODULE_AUTHOR("Cezary Rojewski <cezary.rojewski@intel.com>");
281 MODULE_LICENSE("GPL");
282 MODULE_ALIAS("platform:avs_da7219");
283
