1 // SPDX-License-Identifier: GPL-2.0-only
2 //
3 // Copyright(c) 2021-2022 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/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
17 #define AVS_RT274_FREQ_OUT 24000000
18 #define AVS_RT274_BE_FIXUP_RATE 48000
19 #define RT274_CODEC_DAI "rt274-aif1"
20
21 static const struct snd_kcontrol_new card_controls[] = {
22 SOC_DAPM_PIN_SWITCH("Headphone Jack"),
23 SOC_DAPM_PIN_SWITCH("Mic Jack"),
24 };
25
26 static int
avs_rt274_clock_control(struct snd_soc_dapm_widget * w,struct snd_kcontrol * control,int event)27 avs_rt274_clock_control(struct snd_soc_dapm_widget *w, struct snd_kcontrol *control, int event)
28 {
29 struct snd_soc_dapm_context *dapm = w->dapm;
30 struct snd_soc_card *card = dapm->card;
31 struct snd_soc_dai *codec_dai;
32 int ret;
33
34 codec_dai = snd_soc_card_get_codec_dai(card, RT274_CODEC_DAI);
35 if (!codec_dai)
36 return -EINVAL;
37
38 /* Codec needs clock for Jack detection and button press */
39 ret = snd_soc_dai_set_sysclk(codec_dai, RT274_SCLK_S_PLL2, AVS_RT274_FREQ_OUT,
40 SND_SOC_CLOCK_IN);
41 if (ret < 0) {
42 dev_err(codec_dai->dev, "set codec sysclk failed: %d\n", ret);
43 return ret;
44 }
45
46 if (SND_SOC_DAPM_EVENT_ON(event)) {
47 int ratio = 100;
48
49 snd_soc_dai_set_bclk_ratio(codec_dai, ratio);
50
51 ret = snd_soc_dai_set_pll(codec_dai, 0, RT274_PLL2_S_BCLK,
52 AVS_RT274_BE_FIXUP_RATE * ratio, AVS_RT274_FREQ_OUT);
53 if (ret) {
54 dev_err(codec_dai->dev, "failed to enable PLL2: %d\n", ret);
55 return ret;
56 }
57 }
58
59 return 0;
60 }
61
62 static const struct snd_soc_dapm_widget card_widgets[] = {
63 SND_SOC_DAPM_HP("Headphone Jack", NULL),
64 SND_SOC_DAPM_MIC("Mic Jack", NULL),
65 SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, avs_rt274_clock_control,
66 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
67 };
68
69 static const struct snd_soc_dapm_route card_base_routes[] = {
70 {"Headphone Jack", NULL, "HPO Pin"},
71 {"MIC", NULL, "Mic Jack"},
72
73 {"Headphone Jack", NULL, "Platform Clock"},
74 {"MIC", NULL, "Platform Clock"},
75 };
76
77 static struct snd_soc_jack_pin card_headset_pins[] = {
78 {
79 .pin = "Headphone Jack",
80 .mask = SND_JACK_HEADPHONE,
81 },
82 {
83 .pin = "Mic Jack",
84 .mask = SND_JACK_MICROPHONE,
85 },
86 };
87
avs_rt274_codec_init(struct snd_soc_pcm_runtime * runtime)88 static int avs_rt274_codec_init(struct snd_soc_pcm_runtime *runtime)
89 {
90 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(runtime, 0);
91 struct snd_soc_component *component = codec_dai->component;
92 struct snd_soc_jack_pin *pins;
93 struct snd_soc_jack *jack;
94 struct snd_soc_card *card = runtime->card;
95 int num_pins, ret;
96
97 jack = snd_soc_card_get_drvdata(card);
98 num_pins = ARRAY_SIZE(card_headset_pins);
99
100 pins = devm_kmemdup(card->dev, card_headset_pins, sizeof(*pins) * num_pins, GFP_KERNEL);
101 if (!pins)
102 return -ENOMEM;
103
104 ret = snd_soc_card_jack_new_pins(card, "Headset", SND_JACK_HEADSET, jack, pins, num_pins);
105 if (ret)
106 return ret;
107
108 snd_soc_component_set_jack(component, jack, NULL);
109
110 /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
111 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24);
112 if (ret < 0) {
113 dev_err(card->dev, "can't set codec pcm format %d\n", ret);
114 return ret;
115 }
116
117 card->dapm.idle_bias_off = true;
118
119 return 0;
120 }
121
avs_rt274_codec_exit(struct snd_soc_pcm_runtime * rtd)122 static void avs_rt274_codec_exit(struct snd_soc_pcm_runtime *rtd)
123 {
124 snd_soc_component_set_jack(asoc_rtd_to_codec(rtd, 0)->component, NULL, NULL);
125 }
126
avs_rt274_be_fixup(struct snd_soc_pcm_runtime * runtime,struct snd_pcm_hw_params * params)127 static int avs_rt274_be_fixup(struct snd_soc_pcm_runtime *runtime, struct snd_pcm_hw_params *params)
128 {
129 struct snd_interval *rate, *channels;
130 struct snd_mask *fmt;
131
132 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
133 channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
134 fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
135
136 /* The ADSP will convert the FE rate to 48k, stereo */
137 rate->min = rate->max = AVS_RT274_BE_FIXUP_RATE;
138 channels->min = channels->max = 2;
139
140 /* set SSPN to 24 bit */
141 snd_mask_none(fmt);
142 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE);
143
144 return 0;
145 }
146
avs_create_dai_link(struct device * dev,const char * platform_name,int ssp_port,struct snd_soc_dai_link ** dai_link)147 static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port,
148 struct snd_soc_dai_link **dai_link)
149 {
150 struct snd_soc_dai_link_component *platform;
151 struct snd_soc_dai_link *dl;
152
153 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);
154 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
155 if (!dl || !platform)
156 return -ENOMEM;
157
158 platform->name = platform_name;
159
160 dl->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-Codec", ssp_port);
161 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
162 dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL);
163 if (!dl->name || !dl->cpus || !dl->codecs)
164 return -ENOMEM;
165
166 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin", ssp_port);
167 dl->codecs->name = devm_kasprintf(dev, GFP_KERNEL, "i2c-INT34C2:00");
168 dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, RT274_CODEC_DAI);
169 if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name)
170 return -ENOMEM;
171
172 dl->num_cpus = 1;
173 dl->num_codecs = 1;
174 dl->platforms = platform;
175 dl->num_platforms = 1;
176 dl->id = 0;
177 dl->dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS;
178 dl->init = avs_rt274_codec_init;
179 dl->exit = avs_rt274_codec_exit;
180 dl->be_hw_params_fixup = avs_rt274_be_fixup;
181 dl->nonatomic = 1;
182 dl->no_pcm = 1;
183 dl->dpcm_capture = 1;
184 dl->dpcm_playback = 1;
185
186 *dai_link = dl;
187
188 return 0;
189 }
190
avs_card_suspend_pre(struct snd_soc_card * card)191 static int avs_card_suspend_pre(struct snd_soc_card *card)
192 {
193 struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, RT274_CODEC_DAI);
194
195 return snd_soc_component_set_jack(codec_dai->component, NULL, NULL);
196 }
197
avs_card_resume_post(struct snd_soc_card * card)198 static int avs_card_resume_post(struct snd_soc_card *card)
199 {
200 struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, RT274_CODEC_DAI);
201 struct snd_soc_jack *jack = snd_soc_card_get_drvdata(card);
202
203 return snd_soc_component_set_jack(codec_dai->component, jack, NULL);
204 }
205
avs_rt274_probe(struct platform_device * pdev)206 static int avs_rt274_probe(struct platform_device *pdev)
207 {
208 struct snd_soc_dai_link *dai_link;
209 struct snd_soc_acpi_mach *mach;
210 struct snd_soc_card *card;
211 struct snd_soc_jack *jack;
212 struct device *dev = &pdev->dev;
213 const char *pname;
214 int ssp_port, ret;
215
216 mach = dev_get_platdata(dev);
217 pname = mach->mach_params.platform;
218 ssp_port = __ffs(mach->mach_params.i2s_link_mask);
219
220 ret = avs_create_dai_link(dev, pname, ssp_port, &dai_link);
221 if (ret) {
222 dev_err(dev, "Failed to create dai link: %d", ret);
223 return ret;
224 }
225
226 jack = devm_kzalloc(dev, sizeof(*jack), GFP_KERNEL);
227 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
228 if (!jack || !card)
229 return -ENOMEM;
230
231 card->name = "avs_rt274";
232 card->dev = dev;
233 card->owner = THIS_MODULE;
234 card->suspend_pre = avs_card_suspend_pre;
235 card->resume_post = avs_card_resume_post;
236 card->dai_link = dai_link;
237 card->num_links = 1;
238 card->controls = card_controls;
239 card->num_controls = ARRAY_SIZE(card_controls);
240 card->dapm_widgets = card_widgets;
241 card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
242 card->dapm_routes = card_base_routes;
243 card->num_dapm_routes = ARRAY_SIZE(card_base_routes);
244 card->fully_routed = true;
245 snd_soc_card_set_drvdata(card, jack);
246
247 ret = snd_soc_fixup_dai_links_platform_name(card, pname);
248 if (ret)
249 return ret;
250
251 return devm_snd_soc_register_card(dev, card);
252 }
253
254 static struct platform_driver avs_rt274_driver = {
255 .probe = avs_rt274_probe,
256 .driver = {
257 .name = "avs_rt274",
258 .pm = &snd_soc_pm_ops,
259 },
260 };
261
262 module_platform_driver(avs_rt274_driver);
263
264 MODULE_LICENSE("GPL");
265 MODULE_ALIAS("platform:avs_rt274");
266