xref: /openbmc/linux/sound/soc/qcom/apq8016_sbc.c (revision 841361d8)
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 "common.h"
20 #include "qdsp6/q6afe.h"
21 
22 #define MI2S_COUNT  (MI2S_QUATERNARY + 1)
23 
24 struct apq8016_sbc_data {
25 	struct snd_soc_card card;
26 	void __iomem *mic_iomux;
27 	void __iomem *spkr_iomux;
28 	struct snd_soc_jack jack;
29 	bool jack_setup;
30 	int mi2s_clk_count[MI2S_COUNT];
31 };
32 
33 #define MIC_CTRL_TER_WS_SLAVE_SEL	BIT(21)
34 #define MIC_CTRL_QUA_WS_SLAVE_SEL_10	BIT(17)
35 #define MIC_CTRL_TLMM_SCLK_EN		BIT(1)
36 #define	SPKR_CTL_PRI_WS_SLAVE_SEL_11	(BIT(17) | BIT(16))
37 #define SPKR_CTL_TLMM_MCLK_EN		BIT(1)
38 #define SPKR_CTL_TLMM_SCLK_EN		BIT(2)
39 #define SPKR_CTL_TLMM_DATA1_EN		BIT(3)
40 #define SPKR_CTL_TLMM_WS_OUT_SEL_MASK	GENMASK(7, 6)
41 #define SPKR_CTL_TLMM_WS_OUT_SEL_SEC	BIT(6)
42 #define SPKR_CTL_TLMM_WS_EN_SEL_MASK	GENMASK(19, 18)
43 #define SPKR_CTL_TLMM_WS_EN_SEL_SEC	BIT(18)
44 #define DEFAULT_MCLK_RATE		9600000
45 #define MI2S_BCLK_RATE			1536000
46 
47 static struct snd_soc_jack_pin apq8016_sbc_jack_pins[] = {
48 	{
49 		.pin = "Mic Jack",
50 		.mask = SND_JACK_MICROPHONE,
51 	},
52 	{
53 		.pin = "Headphone Jack",
54 		.mask = SND_JACK_HEADPHONE,
55 	},
56 };
57 
apq8016_dai_init(struct snd_soc_pcm_runtime * rtd,int mi2s)58 static int apq8016_dai_init(struct snd_soc_pcm_runtime *rtd, int mi2s)
59 {
60 	struct snd_soc_dai *codec_dai;
61 	struct snd_soc_component *component;
62 	struct snd_soc_card *card = rtd->card;
63 	struct apq8016_sbc_data *pdata = snd_soc_card_get_drvdata(card);
64 	int i, rval;
65 	u32 value;
66 
67 	switch (mi2s) {
68 	case MI2S_PRIMARY:
69 		writel(readl(pdata->spkr_iomux) | SPKR_CTL_PRI_WS_SLAVE_SEL_11,
70 			pdata->spkr_iomux);
71 		break;
72 
73 	case MI2S_QUATERNARY:
74 		/* Configure the Quat MI2S to TLMM */
75 		writel(readl(pdata->mic_iomux) | MIC_CTRL_QUA_WS_SLAVE_SEL_10 |
76 			MIC_CTRL_TLMM_SCLK_EN,
77 			pdata->mic_iomux);
78 		break;
79 	case MI2S_SECONDARY:
80 		/* Clear TLMM_WS_OUT_SEL and TLMM_WS_EN_SEL fields */
81 		value = readl(pdata->spkr_iomux) &
82 			~(SPKR_CTL_TLMM_WS_OUT_SEL_MASK | SPKR_CTL_TLMM_WS_EN_SEL_MASK);
83 		/* Configure the Sec MI2S to TLMM */
84 		writel(value | SPKR_CTL_TLMM_MCLK_EN | SPKR_CTL_TLMM_SCLK_EN |
85 			SPKR_CTL_TLMM_DATA1_EN | SPKR_CTL_TLMM_WS_OUT_SEL_SEC |
86 			SPKR_CTL_TLMM_WS_EN_SEL_SEC, pdata->spkr_iomux);
87 		break;
88 	case MI2S_TERTIARY:
89 		writel(readl(pdata->mic_iomux) | MIC_CTRL_TER_WS_SLAVE_SEL |
90 			MIC_CTRL_TLMM_SCLK_EN,
91 			pdata->mic_iomux);
92 
93 		break;
94 
95 	default:
96 		dev_err(card->dev, "unsupported cpu dai configuration\n");
97 		return -EINVAL;
98 
99 	}
100 
101 	if (!pdata->jack_setup) {
102 		struct snd_jack *jack;
103 
104 		rval = snd_soc_card_jack_new_pins(card, "Headset Jack",
105 						  SND_JACK_HEADSET |
106 						  SND_JACK_HEADPHONE |
107 						  SND_JACK_BTN_0 | SND_JACK_BTN_1 |
108 						  SND_JACK_BTN_2 | SND_JACK_BTN_3 |
109 						  SND_JACK_BTN_4,
110 						  &pdata->jack,
111 						  apq8016_sbc_jack_pins,
112 						  ARRAY_SIZE(apq8016_sbc_jack_pins));
113 
114 		if (rval < 0) {
115 			dev_err(card->dev, "Unable to add Headphone Jack\n");
116 			return rval;
117 		}
118 
119 		jack = pdata->jack.jack;
120 
121 		snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
122 		snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
123 		snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
124 		snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
125 		pdata->jack_setup = true;
126 	}
127 
128 	for_each_rtd_codec_dais(rtd, i, codec_dai) {
129 
130 		component = codec_dai->component;
131 		/* Set default mclk for internal codec */
132 		rval = snd_soc_component_set_sysclk(component, 0, 0, DEFAULT_MCLK_RATE,
133 				       SND_SOC_CLOCK_IN);
134 		if (rval != 0 && rval != -ENOTSUPP) {
135 			dev_warn(card->dev, "Failed to set mclk: %d\n", rval);
136 			return rval;
137 		}
138 		rval = snd_soc_component_set_jack(component, &pdata->jack, NULL);
139 		if (rval != 0 && rval != -ENOTSUPP) {
140 			dev_warn(card->dev, "Failed to set jack: %d\n", rval);
141 			return rval;
142 		}
143 	}
144 
145 	return 0;
146 }
147 
apq8016_sbc_dai_init(struct snd_soc_pcm_runtime * rtd)148 static int apq8016_sbc_dai_init(struct snd_soc_pcm_runtime *rtd)
149 {
150 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
151 
152 	return apq8016_dai_init(rtd, cpu_dai->id);
153 }
154 
apq8016_sbc_add_ops(struct snd_soc_card * card)155 static void apq8016_sbc_add_ops(struct snd_soc_card *card)
156 {
157 	struct snd_soc_dai_link *link;
158 	int i;
159 
160 	for_each_card_prelinks(card, i, link)
161 		link->init = apq8016_sbc_dai_init;
162 }
163 
qdsp6_dai_get_lpass_id(struct snd_soc_dai * cpu_dai)164 static int qdsp6_dai_get_lpass_id(struct snd_soc_dai *cpu_dai)
165 {
166 	switch (cpu_dai->id) {
167 	case PRIMARY_MI2S_RX:
168 	case PRIMARY_MI2S_TX:
169 		return MI2S_PRIMARY;
170 	case SECONDARY_MI2S_RX:
171 	case SECONDARY_MI2S_TX:
172 		return MI2S_SECONDARY;
173 	case TERTIARY_MI2S_RX:
174 	case TERTIARY_MI2S_TX:
175 		return MI2S_TERTIARY;
176 	case QUATERNARY_MI2S_RX:
177 	case QUATERNARY_MI2S_TX:
178 		return MI2S_QUATERNARY;
179 	default:
180 		return -EINVAL;
181 	}
182 }
183 
msm8916_qdsp6_dai_init(struct snd_soc_pcm_runtime * rtd)184 static int msm8916_qdsp6_dai_init(struct snd_soc_pcm_runtime *rtd)
185 {
186 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
187 
188 	snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_BP_FP);
189 	return apq8016_dai_init(rtd, qdsp6_dai_get_lpass_id(cpu_dai));
190 }
191 
msm8916_qdsp6_startup(struct snd_pcm_substream * substream)192 static int msm8916_qdsp6_startup(struct snd_pcm_substream *substream)
193 {
194 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
195 	struct snd_soc_card *card = rtd->card;
196 	struct apq8016_sbc_data *data = snd_soc_card_get_drvdata(card);
197 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
198 	int mi2s, ret;
199 
200 	mi2s = qdsp6_dai_get_lpass_id(cpu_dai);
201 	if (mi2s < 0)
202 		return mi2s;
203 
204 	if (++data->mi2s_clk_count[mi2s] > 1)
205 		return 0;
206 
207 	ret = snd_soc_dai_set_sysclk(cpu_dai, LPAIF_BIT_CLK, MI2S_BCLK_RATE, 0);
208 	if (ret)
209 		dev_err(card->dev, "Failed to enable LPAIF bit clk: %d\n", ret);
210 	return ret;
211 }
212 
msm8916_qdsp6_shutdown(struct snd_pcm_substream * substream)213 static void msm8916_qdsp6_shutdown(struct snd_pcm_substream *substream)
214 {
215 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
216 	struct snd_soc_card *card = rtd->card;
217 	struct apq8016_sbc_data *data = snd_soc_card_get_drvdata(card);
218 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
219 	int mi2s, ret;
220 
221 	mi2s = qdsp6_dai_get_lpass_id(cpu_dai);
222 	if (mi2s < 0)
223 		return;
224 
225 	if (--data->mi2s_clk_count[mi2s] > 0)
226 		return;
227 
228 	ret = snd_soc_dai_set_sysclk(cpu_dai, LPAIF_BIT_CLK, 0, 0);
229 	if (ret)
230 		dev_err(card->dev, "Failed to disable LPAIF bit clk: %d\n", ret);
231 }
232 
233 static const struct snd_soc_ops msm8916_qdsp6_be_ops = {
234 	.startup = msm8916_qdsp6_startup,
235 	.shutdown = msm8916_qdsp6_shutdown,
236 };
237 
msm8916_qdsp6_be_hw_params_fixup(struct snd_soc_pcm_runtime * rtd,struct snd_pcm_hw_params * params)238 static int msm8916_qdsp6_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
239 					    struct snd_pcm_hw_params *params)
240 {
241 	struct snd_interval *rate = hw_param_interval(params,
242 					SNDRV_PCM_HW_PARAM_RATE);
243 	struct snd_interval *channels = hw_param_interval(params,
244 					SNDRV_PCM_HW_PARAM_CHANNELS);
245 	struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
246 
247 	rate->min = rate->max = 48000;
248 	channels->min = channels->max = 2;
249 	snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
250 
251 	return 0;
252 }
253 
msm8916_qdsp6_add_ops(struct snd_soc_card * card)254 static void msm8916_qdsp6_add_ops(struct snd_soc_card *card)
255 {
256 	struct snd_soc_dai_link *link;
257 	int i;
258 
259 	/* Make it obvious to userspace that QDSP6 is used */
260 	card->components = "qdsp6";
261 
262 	for_each_card_prelinks(card, i, link) {
263 		if (link->no_pcm) {
264 			link->init = msm8916_qdsp6_dai_init;
265 			link->ops = &msm8916_qdsp6_be_ops;
266 			link->be_hw_params_fixup = msm8916_qdsp6_be_hw_params_fixup;
267 		}
268 	}
269 }
270 
271 static const struct snd_kcontrol_new apq8016_sbc_snd_controls[] = {
272 	SOC_DAPM_PIN_SWITCH("Headphone Jack"),
273 	SOC_DAPM_PIN_SWITCH("Mic Jack"),
274 };
275 
276 static const struct snd_soc_dapm_widget apq8016_sbc_dapm_widgets[] = {
277 	SND_SOC_DAPM_HP("Headphone Jack", NULL),
278 	SND_SOC_DAPM_MIC("Mic Jack", NULL),
279 	SND_SOC_DAPM_MIC("Handset Mic", NULL),
280 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
281 	SND_SOC_DAPM_MIC("Secondary Mic", NULL),
282 	SND_SOC_DAPM_MIC("Digital Mic1", NULL),
283 	SND_SOC_DAPM_MIC("Digital Mic2", NULL),
284 };
285 
apq8016_sbc_platform_probe(struct platform_device * pdev)286 static int apq8016_sbc_platform_probe(struct platform_device *pdev)
287 {
288 	void (*add_ops)(struct snd_soc_card *card);
289 	struct device *dev = &pdev->dev;
290 	struct snd_soc_card *card;
291 	struct apq8016_sbc_data *data;
292 	int ret;
293 
294 	add_ops = device_get_match_data(&pdev->dev);
295 	if (!add_ops)
296 		return -EINVAL;
297 
298 	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
299 	if (!data)
300 		return -ENOMEM;
301 
302 	card = &data->card;
303 	card->dev = dev;
304 	card->owner = THIS_MODULE;
305 	card->dapm_widgets = apq8016_sbc_dapm_widgets;
306 	card->num_dapm_widgets = ARRAY_SIZE(apq8016_sbc_dapm_widgets);
307 	card->controls = apq8016_sbc_snd_controls;
308 	card->num_controls = ARRAY_SIZE(apq8016_sbc_snd_controls);
309 
310 	ret = qcom_snd_parse_of(card);
311 	if (ret)
312 		return ret;
313 
314 	data->mic_iomux = devm_platform_ioremap_resource_byname(pdev, "mic-iomux");
315 	if (IS_ERR(data->mic_iomux))
316 		return PTR_ERR(data->mic_iomux);
317 
318 	data->spkr_iomux = devm_platform_ioremap_resource_byname(pdev, "spkr-iomux");
319 	if (IS_ERR(data->spkr_iomux))
320 		return PTR_ERR(data->spkr_iomux);
321 
322 	snd_soc_card_set_drvdata(card, data);
323 
324 	add_ops(card);
325 	return devm_snd_soc_register_card(&pdev->dev, card);
326 }
327 
328 static const struct of_device_id apq8016_sbc_device_id[] __maybe_unused = {
329 	{ .compatible = "qcom,apq8016-sbc-sndcard", .data = apq8016_sbc_add_ops },
330 	{ .compatible = "qcom,msm8916-qdsp6-sndcard", .data = msm8916_qdsp6_add_ops },
331 	{},
332 };
333 MODULE_DEVICE_TABLE(of, apq8016_sbc_device_id);
334 
335 static struct platform_driver apq8016_sbc_platform_driver = {
336 	.driver = {
337 		.name = "qcom-apq8016-sbc",
338 		.of_match_table = of_match_ptr(apq8016_sbc_device_id),
339 	},
340 	.probe = apq8016_sbc_platform_probe,
341 };
342 module_platform_driver(apq8016_sbc_platform_driver);
343 
344 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
345 MODULE_DESCRIPTION("APQ8016 ASoC Machine Driver");
346 MODULE_LICENSE("GPL v2");
347