1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2015 The Linux Foundation. All rights reserved.
4 */
5
6 #include <linux/device.h>
7 #include <linux/module.h>
8 #include <linux/kernel.h>
9 #include <linux/io.h>
10 #include <linux/of.h>
11 #include <linux/clk.h>
12 #include <linux/platform_device.h>
13 #include <sound/pcm.h>
14 #include <sound/pcm_params.h>
15 #include <sound/jack.h>
16 #include <sound/soc.h>
17 #include <uapi/linux/input-event-codes.h>
18 #include <dt-bindings/sound/apq8016-lpass.h>
19
20 struct apq8016_sbc_data {
21 void __iomem *mic_iomux;
22 void __iomem *spkr_iomux;
23 struct snd_soc_jack jack;
24 bool jack_setup;
25 struct snd_soc_dai_link dai_link[]; /* dynamically allocated */
26 };
27
28 #define MIC_CTRL_TER_WS_SLAVE_SEL BIT(21)
29 #define MIC_CTRL_QUA_WS_SLAVE_SEL_10 BIT(17)
30 #define MIC_CTRL_TLMM_SCLK_EN BIT(1)
31 #define SPKR_CTL_PRI_WS_SLAVE_SEL_11 (BIT(17) | BIT(16))
32 #define DEFAULT_MCLK_RATE 9600000
33
apq8016_sbc_dai_init(struct snd_soc_pcm_runtime * rtd)34 static int apq8016_sbc_dai_init(struct snd_soc_pcm_runtime *rtd)
35 {
36 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
37 struct snd_soc_component *component;
38 struct snd_soc_dai_link *dai_link = rtd->dai_link;
39 struct snd_soc_card *card = rtd->card;
40 struct apq8016_sbc_data *pdata = snd_soc_card_get_drvdata(card);
41 int i, rval;
42
43 switch (cpu_dai->id) {
44 case MI2S_PRIMARY:
45 writel(readl(pdata->spkr_iomux) | SPKR_CTL_PRI_WS_SLAVE_SEL_11,
46 pdata->spkr_iomux);
47 break;
48
49 case MI2S_QUATERNARY:
50 /* Configure the Quat MI2S to TLMM */
51 writel(readl(pdata->mic_iomux) | MIC_CTRL_QUA_WS_SLAVE_SEL_10 |
52 MIC_CTRL_TLMM_SCLK_EN,
53 pdata->mic_iomux);
54 break;
55 case MI2S_TERTIARY:
56 writel(readl(pdata->mic_iomux) | MIC_CTRL_TER_WS_SLAVE_SEL |
57 MIC_CTRL_TLMM_SCLK_EN,
58 pdata->mic_iomux);
59
60 break;
61
62 default:
63 dev_err(card->dev, "unsupported cpu dai configuration\n");
64 return -EINVAL;
65
66 }
67
68 if (!pdata->jack_setup) {
69 struct snd_jack *jack;
70
71 rval = snd_soc_card_jack_new(card, "Headset Jack",
72 SND_JACK_HEADSET |
73 SND_JACK_HEADPHONE |
74 SND_JACK_BTN_0 | SND_JACK_BTN_1 |
75 SND_JACK_BTN_2 | SND_JACK_BTN_3 |
76 SND_JACK_BTN_4,
77 &pdata->jack, NULL, 0);
78
79 if (rval < 0) {
80 dev_err(card->dev, "Unable to add Headphone Jack\n");
81 return rval;
82 }
83
84 jack = pdata->jack.jack;
85
86 snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
87 snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
88 snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
89 snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
90 pdata->jack_setup = true;
91 }
92
93 for (i = 0 ; i < dai_link->num_codecs; i++) {
94 struct snd_soc_dai *dai = rtd->codec_dais[i];
95
96 component = dai->component;
97 /* Set default mclk for internal codec */
98 rval = snd_soc_component_set_sysclk(component, 0, 0, DEFAULT_MCLK_RATE,
99 SND_SOC_CLOCK_IN);
100 if (rval != 0 && rval != -ENOTSUPP) {
101 dev_warn(card->dev, "Failed to set mclk: %d\n", rval);
102 return rval;
103 }
104 rval = snd_soc_component_set_jack(component, &pdata->jack, NULL);
105 if (rval != 0 && rval != -ENOTSUPP) {
106 dev_warn(card->dev, "Failed to set jack: %d\n", rval);
107 return rval;
108 }
109 }
110
111 return 0;
112 }
113
apq8016_sbc_parse_of(struct snd_soc_card * card)114 static struct apq8016_sbc_data *apq8016_sbc_parse_of(struct snd_soc_card *card)
115 {
116 struct device *dev = card->dev;
117 struct snd_soc_dai_link *link;
118 struct device_node *np, *codec, *cpu, *node = dev->of_node;
119 struct apq8016_sbc_data *data;
120 struct snd_soc_dai_link_component *dlc;
121 int ret, num_links;
122
123 ret = snd_soc_of_parse_card_name(card, "qcom,model");
124 if (ret) {
125 dev_err(dev, "Error parsing card name: %d\n", ret);
126 return ERR_PTR(ret);
127 }
128
129 /* DAPM routes */
130 if (of_property_read_bool(node, "qcom,audio-routing")) {
131 ret = snd_soc_of_parse_audio_routing(card,
132 "qcom,audio-routing");
133 if (ret)
134 return ERR_PTR(ret);
135 }
136
137
138 /* Populate links */
139 num_links = of_get_child_count(node);
140
141 /* Allocate the private data and the DAI link array */
142 data = devm_kzalloc(dev,
143 struct_size(data, dai_link, num_links),
144 GFP_KERNEL);
145 if (!data)
146 return ERR_PTR(-ENOMEM);
147
148 card->dai_link = &data->dai_link[0];
149 card->num_links = num_links;
150
151 link = data->dai_link;
152
153 for_each_child_of_node(node, np) {
154 dlc = devm_kzalloc(dev, 2 * sizeof(*dlc), GFP_KERNEL);
155 if (!dlc)
156 return ERR_PTR(-ENOMEM);
157
158 link->cpus = &dlc[0];
159 link->platforms = &dlc[1];
160
161 link->num_cpus = 1;
162 link->num_platforms = 1;
163
164 cpu = of_get_child_by_name(np, "cpu");
165 codec = of_get_child_by_name(np, "codec");
166
167 if (!cpu || !codec) {
168 dev_err(dev, "Can't find cpu/codec DT node\n");
169 ret = -EINVAL;
170 goto error;
171 }
172
173 link->cpus->of_node = of_parse_phandle(cpu, "sound-dai", 0);
174 if (!link->cpus->of_node) {
175 dev_err(card->dev, "error getting cpu phandle\n");
176 ret = -EINVAL;
177 goto error;
178 }
179
180 ret = snd_soc_of_get_dai_name(cpu, &link->cpus->dai_name);
181 if (ret) {
182 dev_err(card->dev, "error getting cpu dai name\n");
183 goto error;
184 }
185
186 ret = snd_soc_of_get_dai_link_codecs(dev, codec, link);
187
188 if (ret < 0) {
189 dev_err(card->dev, "error getting codec dai name\n");
190 goto error;
191 }
192
193 link->platforms->of_node = link->cpus->of_node;
194 ret = of_property_read_string(np, "link-name", &link->name);
195 if (ret) {
196 dev_err(card->dev, "error getting codec dai_link name\n");
197 goto error;
198 }
199
200 link->stream_name = link->name;
201 link->init = apq8016_sbc_dai_init;
202 link++;
203
204 of_node_put(cpu);
205 of_node_put(codec);
206 }
207
208 return data;
209
210 error:
211 of_node_put(np);
212 of_node_put(cpu);
213 of_node_put(codec);
214 return ERR_PTR(ret);
215 }
216
217 static const struct snd_soc_dapm_widget apq8016_sbc_dapm_widgets[] = {
218
219 SND_SOC_DAPM_MIC("Handset Mic", NULL),
220 SND_SOC_DAPM_MIC("Headset Mic", NULL),
221 SND_SOC_DAPM_MIC("Secondary Mic", NULL),
222 SND_SOC_DAPM_MIC("Digital Mic1", NULL),
223 SND_SOC_DAPM_MIC("Digital Mic2", NULL),
224 };
225
apq8016_sbc_platform_probe(struct platform_device * pdev)226 static int apq8016_sbc_platform_probe(struct platform_device *pdev)
227 {
228 struct device *dev = &pdev->dev;
229 struct snd_soc_card *card;
230 struct apq8016_sbc_data *data;
231 struct resource *res;
232
233 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
234 if (!card)
235 return -ENOMEM;
236
237 card->dev = dev;
238 card->owner = THIS_MODULE;
239 card->dapm_widgets = apq8016_sbc_dapm_widgets;
240 card->num_dapm_widgets = ARRAY_SIZE(apq8016_sbc_dapm_widgets);
241 data = apq8016_sbc_parse_of(card);
242 if (IS_ERR(data)) {
243 dev_err(&pdev->dev, "Error resolving dai links: %ld\n",
244 PTR_ERR(data));
245 return PTR_ERR(data);
246 }
247
248 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mic-iomux");
249 data->mic_iomux = devm_ioremap_resource(dev, res);
250 if (IS_ERR(data->mic_iomux))
251 return PTR_ERR(data->mic_iomux);
252
253 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "spkr-iomux");
254 data->spkr_iomux = devm_ioremap_resource(dev, res);
255 if (IS_ERR(data->spkr_iomux))
256 return PTR_ERR(data->spkr_iomux);
257
258 snd_soc_card_set_drvdata(card, data);
259
260 return devm_snd_soc_register_card(&pdev->dev, card);
261 }
262
263 static const struct of_device_id apq8016_sbc_device_id[] = {
264 { .compatible = "qcom,apq8016-sbc-sndcard" },
265 {},
266 };
267 MODULE_DEVICE_TABLE(of, apq8016_sbc_device_id);
268
269 static struct platform_driver apq8016_sbc_platform_driver = {
270 .driver = {
271 .name = "qcom-apq8016-sbc",
272 .of_match_table = of_match_ptr(apq8016_sbc_device_id),
273 },
274 .probe = apq8016_sbc_platform_probe,
275 };
276 module_platform_driver(apq8016_sbc_platform_driver);
277
278 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
279 MODULE_DESCRIPTION("APQ8016 ASoC Machine Driver");
280 MODULE_LICENSE("GPL v2");
281