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 #include <dt-bindings/sound/qcom,q6afe.h>
20 #include "common.h"
21 #include "qdsp6/q6afe.h"
22
23 #define MI2S_COUNT (MI2S_QUATERNARY + 1)
24
25 struct apq8016_sbc_data {
26 struct snd_soc_card card;
27 void __iomem *mic_iomux;
28 void __iomem *spkr_iomux;
29 struct snd_soc_jack jack;
30 bool jack_setup;
31 int mi2s_clk_count[MI2S_COUNT];
32 };
33
34 #define MIC_CTRL_TER_WS_SLAVE_SEL BIT(21)
35 #define MIC_CTRL_QUA_WS_SLAVE_SEL_10 BIT(17)
36 #define MIC_CTRL_TLMM_SCLK_EN BIT(1)
37 #define SPKR_CTL_PRI_WS_SLAVE_SEL_11 (BIT(17) | BIT(16))
38 #define SPKR_CTL_TLMM_MCLK_EN BIT(1)
39 #define SPKR_CTL_TLMM_SCLK_EN BIT(2)
40 #define SPKR_CTL_TLMM_DATA1_EN BIT(3)
41 #define SPKR_CTL_TLMM_WS_OUT_SEL_MASK GENMASK(7, 6)
42 #define SPKR_CTL_TLMM_WS_OUT_SEL_SEC BIT(6)
43 #define SPKR_CTL_TLMM_WS_EN_SEL_MASK GENMASK(19, 18)
44 #define SPKR_CTL_TLMM_WS_EN_SEL_SEC BIT(18)
45 #define DEFAULT_MCLK_RATE 9600000
46 #define MI2S_BCLK_RATE 1536000
47
48 static struct snd_soc_jack_pin apq8016_sbc_jack_pins[] = {
49 {
50 .pin = "Mic Jack",
51 .mask = SND_JACK_MICROPHONE,
52 },
53 {
54 .pin = "Headphone Jack",
55 .mask = SND_JACK_HEADPHONE,
56 },
57 };
58
59 static int apq8016_dai_init(struct snd_soc_pcm_runtime *rtd, int mi2s)
60 {
61 struct snd_soc_dai *codec_dai;
62 struct snd_soc_component *component;
63 struct snd_soc_card *card = rtd->card;
64 struct apq8016_sbc_data *pdata = snd_soc_card_get_drvdata(card);
65 int i, rval;
66 u32 value;
67
68 switch (mi2s) {
69 case MI2S_PRIMARY:
70 writel(readl(pdata->spkr_iomux) | SPKR_CTL_PRI_WS_SLAVE_SEL_11,
71 pdata->spkr_iomux);
72 break;
73
74 case MI2S_QUATERNARY:
75 /* Configure the Quat MI2S to TLMM */
76 writel(readl(pdata->mic_iomux) | MIC_CTRL_QUA_WS_SLAVE_SEL_10 |
77 MIC_CTRL_TLMM_SCLK_EN,
78 pdata->mic_iomux);
79 break;
80 case MI2S_SECONDARY:
81 /* Clear TLMM_WS_OUT_SEL and TLMM_WS_EN_SEL fields */
82 value = readl(pdata->spkr_iomux) &
83 ~(SPKR_CTL_TLMM_WS_OUT_SEL_MASK | SPKR_CTL_TLMM_WS_EN_SEL_MASK);
84 /* Configure the Sec MI2S to TLMM */
85 writel(value | SPKR_CTL_TLMM_MCLK_EN | SPKR_CTL_TLMM_SCLK_EN |
86 SPKR_CTL_TLMM_DATA1_EN | SPKR_CTL_TLMM_WS_OUT_SEL_SEC |
87 SPKR_CTL_TLMM_WS_EN_SEL_SEC, pdata->spkr_iomux);
88 break;
89 case MI2S_TERTIARY:
90 writel(readl(pdata->mic_iomux) | MIC_CTRL_TER_WS_SLAVE_SEL |
91 MIC_CTRL_TLMM_SCLK_EN,
92 pdata->mic_iomux);
93
94 break;
95
96 default:
97 dev_err(card->dev, "unsupported cpu dai configuration\n");
98 return -EINVAL;
99
100 }
101
102 if (!pdata->jack_setup) {
103 struct snd_jack *jack;
104
105 rval = snd_soc_card_jack_new_pins(card, "Headset Jack",
106 SND_JACK_HEADSET |
107 SND_JACK_HEADPHONE |
108 SND_JACK_BTN_0 | SND_JACK_BTN_1 |
109 SND_JACK_BTN_2 | SND_JACK_BTN_3 |
110 SND_JACK_BTN_4,
111 &pdata->jack,
112 apq8016_sbc_jack_pins,
113 ARRAY_SIZE(apq8016_sbc_jack_pins));
114
115 if (rval < 0) {
116 dev_err(card->dev, "Unable to add Headphone Jack\n");
117 return rval;
118 }
119
120 jack = pdata->jack.jack;
121
122 snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
123 snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
124 snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
125 snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
126 pdata->jack_setup = true;
127 }
128
129 for_each_rtd_codec_dais(rtd, i, codec_dai) {
130
131 component = codec_dai->component;
132 /* Set default mclk for internal codec */
133 rval = snd_soc_component_set_sysclk(component, 0, 0, DEFAULT_MCLK_RATE,
134 SND_SOC_CLOCK_IN);
135 if (rval != 0 && rval != -ENOTSUPP) {
136 dev_warn(card->dev, "Failed to set mclk: %d\n", rval);
137 return rval;
138 }
139 rval = snd_soc_component_set_jack(component, &pdata->jack, NULL);
140 if (rval != 0 && rval != -ENOTSUPP) {
141 dev_warn(card->dev, "Failed to set jack: %d\n", rval);
142 return rval;
143 }
144 }
145
146 return 0;
147 }
148
149 static int apq8016_sbc_dai_init(struct snd_soc_pcm_runtime *rtd)
150 {
151 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
152
153 return apq8016_dai_init(rtd, cpu_dai->id);
154 }
155
156 static void apq8016_sbc_add_ops(struct snd_soc_card *card)
157 {
158 struct snd_soc_dai_link *link;
159 int i;
160
161 for_each_card_prelinks(card, i, link)
162 link->init = apq8016_sbc_dai_init;
163 }
164
165 static int qdsp6_dai_get_lpass_id(struct snd_soc_dai *cpu_dai)
166 {
167 switch (cpu_dai->id) {
168 case PRIMARY_MI2S_RX:
169 case PRIMARY_MI2S_TX:
170 return MI2S_PRIMARY;
171 case SECONDARY_MI2S_RX:
172 case SECONDARY_MI2S_TX:
173 return MI2S_SECONDARY;
174 case TERTIARY_MI2S_RX:
175 case TERTIARY_MI2S_TX:
176 return MI2S_TERTIARY;
177 case QUATERNARY_MI2S_RX:
178 case QUATERNARY_MI2S_TX:
179 return MI2S_QUATERNARY;
180 default:
181 return -EINVAL;
182 }
183 }
184
185 static int msm8916_qdsp6_dai_init(struct snd_soc_pcm_runtime *rtd)
186 {
187 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
188
189 snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_BP_FP);
190 return apq8016_dai_init(rtd, qdsp6_dai_get_lpass_id(cpu_dai));
191 }
192
193 static int msm8916_qdsp6_startup(struct snd_pcm_substream *substream)
194 {
195 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
196 struct snd_soc_card *card = rtd->card;
197 struct apq8016_sbc_data *data = snd_soc_card_get_drvdata(card);
198 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
199 int mi2s, ret;
200
201 mi2s = qdsp6_dai_get_lpass_id(cpu_dai);
202 if (mi2s < 0)
203 return mi2s;
204
205 if (++data->mi2s_clk_count[mi2s] > 1)
206 return 0;
207
208 ret = snd_soc_dai_set_sysclk(cpu_dai, LPAIF_BIT_CLK, MI2S_BCLK_RATE, 0);
209 if (ret)
210 dev_err(card->dev, "Failed to enable LPAIF bit clk: %d\n", ret);
211 return ret;
212 }
213
214 static void msm8916_qdsp6_shutdown(struct snd_pcm_substream *substream)
215 {
216 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
217 struct snd_soc_card *card = rtd->card;
218 struct apq8016_sbc_data *data = snd_soc_card_get_drvdata(card);
219 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
220 int mi2s, ret;
221
222 mi2s = qdsp6_dai_get_lpass_id(cpu_dai);
223 if (mi2s < 0)
224 return;
225
226 if (--data->mi2s_clk_count[mi2s] > 0)
227 return;
228
229 ret = snd_soc_dai_set_sysclk(cpu_dai, LPAIF_BIT_CLK, 0, 0);
230 if (ret)
231 dev_err(card->dev, "Failed to disable LPAIF bit clk: %d\n", ret);
232 }
233
234 static const struct snd_soc_ops msm8916_qdsp6_be_ops = {
235 .startup = msm8916_qdsp6_startup,
236 .shutdown = msm8916_qdsp6_shutdown,
237 };
238
239 static int msm8916_qdsp6_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
240 struct snd_pcm_hw_params *params)
241 {
242 struct snd_interval *rate = hw_param_interval(params,
243 SNDRV_PCM_HW_PARAM_RATE);
244 struct snd_interval *channels = hw_param_interval(params,
245 SNDRV_PCM_HW_PARAM_CHANNELS);
246 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
247
248 rate->min = rate->max = 48000;
249 channels->min = channels->max = 2;
250 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
251
252 return 0;
253 }
254
255 static void msm8916_qdsp6_add_ops(struct snd_soc_card *card)
256 {
257 struct snd_soc_dai_link *link;
258 int i;
259
260 /* Make it obvious to userspace that QDSP6 is used */
261 card->components = "qdsp6";
262
263 for_each_card_prelinks(card, i, link) {
264 if (link->no_pcm) {
265 link->init = msm8916_qdsp6_dai_init;
266 link->ops = &msm8916_qdsp6_be_ops;
267 link->be_hw_params_fixup = msm8916_qdsp6_be_hw_params_fixup;
268 }
269 }
270 }
271
272 static const struct snd_kcontrol_new apq8016_sbc_snd_controls[] = {
273 SOC_DAPM_PIN_SWITCH("Headphone Jack"),
274 SOC_DAPM_PIN_SWITCH("Mic Jack"),
275 };
276
277 static const struct snd_soc_dapm_widget apq8016_sbc_dapm_widgets[] = {
278 SND_SOC_DAPM_HP("Headphone Jack", NULL),
279 SND_SOC_DAPM_MIC("Mic Jack", NULL),
280 SND_SOC_DAPM_MIC("Handset Mic", NULL),
281 SND_SOC_DAPM_MIC("Headset Mic", NULL),
282 SND_SOC_DAPM_MIC("Secondary Mic", NULL),
283 SND_SOC_DAPM_MIC("Digital Mic1", NULL),
284 SND_SOC_DAPM_MIC("Digital Mic2", NULL),
285 };
286
287 static int apq8016_sbc_platform_probe(struct platform_device *pdev)
288 {
289 void (*add_ops)(struct snd_soc_card *card);
290 struct device *dev = &pdev->dev;
291 struct snd_soc_card *card;
292 struct apq8016_sbc_data *data;
293 int ret;
294
295 add_ops = device_get_match_data(&pdev->dev);
296 if (!add_ops)
297 return -EINVAL;
298
299 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
300 if (!data)
301 return -ENOMEM;
302
303 card = &data->card;
304 card->dev = dev;
305 card->owner = THIS_MODULE;
306 card->dapm_widgets = apq8016_sbc_dapm_widgets;
307 card->num_dapm_widgets = ARRAY_SIZE(apq8016_sbc_dapm_widgets);
308 card->controls = apq8016_sbc_snd_controls;
309 card->num_controls = ARRAY_SIZE(apq8016_sbc_snd_controls);
310
311 ret = qcom_snd_parse_of(card);
312 if (ret)
313 return ret;
314
315 data->mic_iomux = devm_platform_ioremap_resource_byname(pdev, "mic-iomux");
316 if (IS_ERR(data->mic_iomux))
317 return PTR_ERR(data->mic_iomux);
318
319 data->spkr_iomux = devm_platform_ioremap_resource_byname(pdev, "spkr-iomux");
320 if (IS_ERR(data->spkr_iomux))
321 return PTR_ERR(data->spkr_iomux);
322
323 snd_soc_card_set_drvdata(card, data);
324
325 add_ops(card);
326 return devm_snd_soc_register_card(&pdev->dev, card);
327 }
328
329 static const struct of_device_id apq8016_sbc_device_id[] __maybe_unused = {
330 { .compatible = "qcom,apq8016-sbc-sndcard", .data = apq8016_sbc_add_ops },
331 { .compatible = "qcom,msm8916-qdsp6-sndcard", .data = msm8916_qdsp6_add_ops },
332 {},
333 };
334 MODULE_DEVICE_TABLE(of, apq8016_sbc_device_id);
335
336 static struct platform_driver apq8016_sbc_platform_driver = {
337 .driver = {
338 .name = "qcom-apq8016-sbc",
339 .of_match_table = of_match_ptr(apq8016_sbc_device_id),
340 },
341 .probe = apq8016_sbc_platform_probe,
342 };
343 module_platform_driver(apq8016_sbc_platform_driver);
344
345 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
346 MODULE_DESCRIPTION("APQ8016 ASoC Machine Driver");
347 MODULE_LICENSE("GPL");
348
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