1 // SPDX-License-Identifier: GPL-2.0-only
2 //
3 // Copyright(c) 2021-2022 Intel Corporation
4 //
5 // Authors: Cezary Rojewski <cezary.rojewski@intel.com>
6 // Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
7 //
8
9 #include <linux/module.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 "../../../codecs/rt274.h"
16 #include "../utils.h"
17
18 #define AVS_RT274_FREQ_OUT 24000000
19 #define AVS_RT274_BE_FIXUP_RATE 48000
20 #define RT274_CODEC_DAI "rt274-aif1"
21
22 static const struct snd_kcontrol_new card_controls[] = {
23 SOC_DAPM_PIN_SWITCH("Headphone Jack"),
24 SOC_DAPM_PIN_SWITCH("Mic Jack"),
25 };
26
27 static int
avs_rt274_clock_control(struct snd_soc_dapm_widget * w,struct snd_kcontrol * control,int event)28 avs_rt274_clock_control(struct snd_soc_dapm_widget *w, struct snd_kcontrol *control, 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;
34
35 codec_dai = snd_soc_card_get_codec_dai(card, RT274_CODEC_DAI);
36 if (!codec_dai)
37 return -EINVAL;
38
39 /* Codec needs clock for Jack detection and button press */
40 ret = snd_soc_dai_set_sysclk(codec_dai, RT274_SCLK_S_PLL2, AVS_RT274_FREQ_OUT,
41 SND_SOC_CLOCK_IN);
42 if (ret < 0) {
43 dev_err(codec_dai->dev, "set codec sysclk failed: %d\n", ret);
44 return ret;
45 }
46
47 if (SND_SOC_DAPM_EVENT_ON(event)) {
48 int ratio = 100;
49
50 snd_soc_dai_set_bclk_ratio(codec_dai, ratio);
51
52 ret = snd_soc_dai_set_pll(codec_dai, 0, RT274_PLL2_S_BCLK,
53 AVS_RT274_BE_FIXUP_RATE * ratio, AVS_RT274_FREQ_OUT);
54 if (ret) {
55 dev_err(codec_dai->dev, "failed to enable PLL2: %d\n", ret);
56 return ret;
57 }
58 }
59
60 return 0;
61 }
62
63 static const struct snd_soc_dapm_widget card_widgets[] = {
64 SND_SOC_DAPM_HP("Headphone Jack", NULL),
65 SND_SOC_DAPM_MIC("Mic Jack", NULL),
66 SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, avs_rt274_clock_control,
67 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
68 };
69
70 static const struct snd_soc_dapm_route card_base_routes[] = {
71 {"Headphone Jack", NULL, "HPO Pin"},
72 {"MIC", NULL, "Mic Jack"},
73
74 {"Headphone Jack", NULL, "Platform Clock"},
75 {"MIC", NULL, "Platform Clock"},
76 };
77
78 static const struct snd_soc_jack_pin card_headset_pins[] = {
79 {
80 .pin = "Headphone Jack",
81 .mask = SND_JACK_HEADPHONE,
82 },
83 {
84 .pin = "Mic Jack",
85 .mask = SND_JACK_MICROPHONE,
86 },
87 };
88
avs_rt274_codec_init(struct snd_soc_pcm_runtime * runtime)89 static int avs_rt274_codec_init(struct snd_soc_pcm_runtime *runtime)
90 {
91 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(runtime, 0);
92 struct snd_soc_component *component = codec_dai->component;
93 struct snd_soc_jack_pin *pins;
94 struct snd_soc_jack *jack;
95 struct snd_soc_card *card = runtime->card;
96 int num_pins, ret;
97
98 jack = snd_soc_card_get_drvdata(card);
99 num_pins = ARRAY_SIZE(card_headset_pins);
100
101 pins = devm_kmemdup_array(card->dev, card_headset_pins, num_pins,
102 sizeof(card_headset_pins[0]), GFP_KERNEL);
103 if (!pins)
104 return -ENOMEM;
105
106 ret = snd_soc_card_jack_new_pins(card, "Headset Jack", SND_JACK_HEADSET, jack, pins,
107 num_pins);
108 if (ret)
109 return ret;
110
111 snd_soc_component_set_jack(component, jack, NULL);
112
113 /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
114 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24);
115 if (ret < 0) {
116 dev_err(card->dev, "can't set codec pcm format %d\n", ret);
117 return ret;
118 }
119
120 card->dapm.idle_bias_off = true;
121
122 return 0;
123 }
124
avs_rt274_codec_exit(struct snd_soc_pcm_runtime * rtd)125 static void avs_rt274_codec_exit(struct snd_soc_pcm_runtime *rtd)
126 {
127 snd_soc_component_set_jack(snd_soc_rtd_to_codec(rtd, 0)->component, NULL, NULL);
128 }
129
avs_rt274_be_fixup(struct snd_soc_pcm_runtime * runtime,struct snd_pcm_hw_params * params)130 static int avs_rt274_be_fixup(struct snd_soc_pcm_runtime *runtime, struct snd_pcm_hw_params *params)
131 {
132 struct snd_interval *rate, *channels;
133 struct snd_mask *fmt;
134
135 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
136 channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
137 fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
138
139 /* The ADSP will convert the FE rate to 48k, stereo */
140 rate->min = rate->max = AVS_RT274_BE_FIXUP_RATE;
141 channels->min = channels->max = 2;
142
143 /* set SSPN to 24 bit */
144 snd_mask_none(fmt);
145 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE);
146
147 return 0;
148 }
149
avs_create_dai_link(struct device * dev,const char * platform_name,int ssp_port,int tdm_slot,struct snd_soc_dai_link ** dai_link)150 static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port,
151 int tdm_slot, struct snd_soc_dai_link **dai_link)
152 {
153 struct snd_soc_dai_link_component *platform;
154 struct snd_soc_dai_link *dl;
155
156 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);
157 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
158 if (!dl || !platform)
159 return -ENOMEM;
160
161 platform->name = platform_name;
162
163 dl->name = devm_kasprintf(dev, GFP_KERNEL,
164 AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot));
165 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
166 dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL);
167 if (!dl->name || !dl->cpus || !dl->codecs)
168 return -ENOMEM;
169
170 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL,
171 AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot));
172 dl->codecs->name = devm_kasprintf(dev, GFP_KERNEL, "i2c-INT34C2:00");
173 dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, RT274_CODEC_DAI);
174 if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name)
175 return -ENOMEM;
176
177 dl->num_cpus = 1;
178 dl->num_codecs = 1;
179 dl->platforms = platform;
180 dl->num_platforms = 1;
181 dl->id = 0;
182 dl->dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBC_CFC;
183 dl->init = avs_rt274_codec_init;
184 dl->exit = avs_rt274_codec_exit;
185 dl->be_hw_params_fixup = avs_rt274_be_fixup;
186 dl->nonatomic = 1;
187 dl->no_pcm = 1;
188
189 *dai_link = dl;
190
191 return 0;
192 }
193
avs_card_suspend_pre(struct snd_soc_card * card)194 static int avs_card_suspend_pre(struct snd_soc_card *card)
195 {
196 struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, RT274_CODEC_DAI);
197
198 return snd_soc_component_set_jack(codec_dai->component, NULL, NULL);
199 }
200
avs_card_resume_post(struct snd_soc_card * card)201 static int avs_card_resume_post(struct snd_soc_card *card)
202 {
203 struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, RT274_CODEC_DAI);
204 struct snd_soc_jack *jack = snd_soc_card_get_drvdata(card);
205
206 return snd_soc_component_set_jack(codec_dai->component, jack, NULL);
207 }
208
avs_rt274_probe(struct platform_device * pdev)209 static int avs_rt274_probe(struct platform_device *pdev)
210 {
211 struct snd_soc_dai_link *dai_link;
212 struct snd_soc_acpi_mach *mach;
213 struct avs_mach_pdata *pdata;
214 struct snd_soc_card *card;
215 struct snd_soc_jack *jack;
216 struct device *dev = &pdev->dev;
217 const char *pname;
218 int ssp_port, tdm_slot, ret;
219
220 mach = dev_get_platdata(dev);
221 pname = mach->mach_params.platform;
222 pdata = mach->pdata;
223
224 ret = avs_mach_get_ssp_tdm(dev, mach, &ssp_port, &tdm_slot);
225 if (ret)
226 return ret;
227
228 ret = avs_create_dai_link(dev, pname, ssp_port, tdm_slot, &dai_link);
229 if (ret) {
230 dev_err(dev, "Failed to create dai link: %d", ret);
231 return ret;
232 }
233
234 jack = devm_kzalloc(dev, sizeof(*jack), GFP_KERNEL);
235 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
236 if (!jack || !card)
237 return -ENOMEM;
238
239 if (pdata->obsolete_card_names) {
240 card->name = "avs_rt274";
241 } else {
242 card->driver_name = "avs_rt274";
243 card->long_name = card->name = "AVS I2S ALC274";
244 }
245 card->dev = dev;
246 card->owner = THIS_MODULE;
247 card->suspend_pre = avs_card_suspend_pre;
248 card->resume_post = avs_card_resume_post;
249 card->dai_link = dai_link;
250 card->num_links = 1;
251 card->controls = card_controls;
252 card->num_controls = ARRAY_SIZE(card_controls);
253 card->dapm_widgets = card_widgets;
254 card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
255 card->dapm_routes = card_base_routes;
256 card->num_dapm_routes = ARRAY_SIZE(card_base_routes);
257 card->fully_routed = true;
258 snd_soc_card_set_drvdata(card, jack);
259
260 ret = snd_soc_fixup_dai_links_platform_name(card, pname);
261 if (ret)
262 return ret;
263
264 return devm_snd_soc_register_deferrable_card(dev, card);
265 }
266
267 static const struct platform_device_id avs_rt274_driver_ids[] = {
268 {
269 .name = "avs_rt274",
270 },
271 {},
272 };
273 MODULE_DEVICE_TABLE(platform, avs_rt274_driver_ids);
274
275 static struct platform_driver avs_rt274_driver = {
276 .probe = avs_rt274_probe,
277 .driver = {
278 .name = "avs_rt274",
279 .pm = &snd_soc_pm_ops,
280 },
281 .id_table = avs_rt274_driver_ids,
282 };
283
284 module_platform_driver(avs_rt274_driver);
285
286 MODULE_DESCRIPTION("Intel rt274 machine driver");
287 MODULE_LICENSE("GPL");
288