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(card->dev, card_headset_pins, sizeof(*pins) * num_pins, GFP_KERNEL);
102 if (!pins)
103 return -ENOMEM;
104
105 ret = snd_soc_card_jack_new_pins(card, "Headset Jack", SND_JACK_HEADSET, jack, pins,
106 num_pins);
107 if (ret)
108 return ret;
109
110 snd_soc_component_set_jack(component, jack, NULL);
111
112 /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
113 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24);
114 if (ret < 0) {
115 dev_err(card->dev, "can't set codec pcm format %d\n", ret);
116 return ret;
117 }
118
119 card->dapm.idle_bias_off = true;
120
121 return 0;
122 }
123
avs_rt274_codec_exit(struct snd_soc_pcm_runtime * rtd)124 static void avs_rt274_codec_exit(struct snd_soc_pcm_runtime *rtd)
125 {
126 snd_soc_component_set_jack(snd_soc_rtd_to_codec(rtd, 0)->component, NULL, NULL);
127 }
128
avs_rt274_be_fixup(struct snd_soc_pcm_runtime * runtime,struct snd_pcm_hw_params * params)129 static int avs_rt274_be_fixup(struct snd_soc_pcm_runtime *runtime, struct snd_pcm_hw_params *params)
130 {
131 struct snd_interval *rate, *channels;
132 struct snd_mask *fmt;
133
134 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
135 channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
136 fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
137
138 /* The ADSP will convert the FE rate to 48k, stereo */
139 rate->min = rate->max = AVS_RT274_BE_FIXUP_RATE;
140 channels->min = channels->max = 2;
141
142 /* set SSPN to 24 bit */
143 snd_mask_none(fmt);
144 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE);
145
146 return 0;
147 }
148
avs_create_dai_link(struct device * dev,const char * platform_name,int ssp_port,int tdm_slot,struct snd_soc_dai_link ** dai_link)149 static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port,
150 int tdm_slot, struct snd_soc_dai_link **dai_link)
151 {
152 struct snd_soc_dai_link_component *platform;
153 struct snd_soc_dai_link *dl;
154
155 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);
156 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
157 if (!dl || !platform)
158 return -ENOMEM;
159
160 platform->name = platform_name;
161
162 dl->name = devm_kasprintf(dev, GFP_KERNEL,
163 AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot));
164 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
165 dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL);
166 if (!dl->name || !dl->cpus || !dl->codecs)
167 return -ENOMEM;
168
169 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL,
170 AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot));
171 dl->codecs->name = devm_kasprintf(dev, GFP_KERNEL, "i2c-INT34C2:00");
172 dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, RT274_CODEC_DAI);
173 if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name)
174 return -ENOMEM;
175
176 dl->num_cpus = 1;
177 dl->num_codecs = 1;
178 dl->platforms = platform;
179 dl->num_platforms = 1;
180 dl->id = 0;
181 dl->dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS;
182 dl->init = avs_rt274_codec_init;
183 dl->exit = avs_rt274_codec_exit;
184 dl->be_hw_params_fixup = avs_rt274_be_fixup;
185 dl->nonatomic = 1;
186 dl->no_pcm = 1;
187 dl->dpcm_capture = 1;
188 dl->dpcm_playback = 1;
189
190 *dai_link = dl;
191
192 return 0;
193 }
194
avs_card_suspend_pre(struct snd_soc_card * card)195 static int avs_card_suspend_pre(struct snd_soc_card *card)
196 {
197 struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, RT274_CODEC_DAI);
198
199 return snd_soc_component_set_jack(codec_dai->component, NULL, NULL);
200 }
201
avs_card_resume_post(struct snd_soc_card * card)202 static int avs_card_resume_post(struct snd_soc_card *card)
203 {
204 struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, RT274_CODEC_DAI);
205 struct snd_soc_jack *jack = snd_soc_card_get_drvdata(card);
206
207 return snd_soc_component_set_jack(codec_dai->component, jack, NULL);
208 }
209
avs_rt274_probe(struct platform_device * pdev)210 static int avs_rt274_probe(struct platform_device *pdev)
211 {
212 struct snd_soc_dai_link *dai_link;
213 struct snd_soc_acpi_mach *mach;
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
223 ret = avs_mach_get_ssp_tdm(dev, mach, &ssp_port, &tdm_slot);
224 if (ret)
225 return ret;
226
227 ret = avs_create_dai_link(dev, pname, ssp_port, tdm_slot, &dai_link);
228 if (ret) {
229 dev_err(dev, "Failed to create dai link: %d", ret);
230 return ret;
231 }
232
233 jack = devm_kzalloc(dev, sizeof(*jack), GFP_KERNEL);
234 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
235 if (!jack || !card)
236 return -ENOMEM;
237
238 card->name = "avs_rt274";
239 card->dev = dev;
240 card->owner = THIS_MODULE;
241 card->suspend_pre = avs_card_suspend_pre;
242 card->resume_post = avs_card_resume_post;
243 card->dai_link = dai_link;
244 card->num_links = 1;
245 card->controls = card_controls;
246 card->num_controls = ARRAY_SIZE(card_controls);
247 card->dapm_widgets = card_widgets;
248 card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
249 card->dapm_routes = card_base_routes;
250 card->num_dapm_routes = ARRAY_SIZE(card_base_routes);
251 card->fully_routed = true;
252 snd_soc_card_set_drvdata(card, jack);
253
254 ret = snd_soc_fixup_dai_links_platform_name(card, pname);
255 if (ret)
256 return ret;
257
258 return devm_snd_soc_register_card(dev, card);
259 }
260
261 static const struct platform_device_id avs_rt274_driver_ids[] = {
262 {
263 .name = "avs_rt274",
264 },
265 {},
266 };
267 MODULE_DEVICE_TABLE(platform, avs_rt274_driver_ids);
268
269 static struct platform_driver avs_rt274_driver = {
270 .probe = avs_rt274_probe,
271 .driver = {
272 .name = "avs_rt274",
273 .pm = &snd_soc_pm_ops,
274 },
275 .id_table = avs_rt274_driver_ids,
276 };
277
278 module_platform_driver(avs_rt274_driver);
279
280 MODULE_DESCRIPTION("Intel rt274 machine driver");
281 MODULE_LICENSE("GPL");
282