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
25struct 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
48static 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
59static 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
149static 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
156static 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
165static 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
185static 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
193static int msm8916_qdsp6_startup(struct snd_pcm_substream *substream)
194{
195	struct snd_soc_pcm_runtime *rtd = substream->private_data;
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
214static void msm8916_qdsp6_shutdown(struct snd_pcm_substream *substream)
215{
216	struct snd_soc_pcm_runtime *rtd = substream->private_data;
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
234static const struct snd_soc_ops msm8916_qdsp6_be_ops = {
235	.startup = msm8916_qdsp6_startup,
236	.shutdown = msm8916_qdsp6_shutdown,
237};
238
239static 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
255static 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
272static 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
277static 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
287static 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
329static 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};
334MODULE_DEVICE_TABLE(of, apq8016_sbc_device_id);
335
336static 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};
343module_platform_driver(apq8016_sbc_platform_driver);
344
345MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
346MODULE_DESCRIPTION("APQ8016 ASoC Machine Driver");
347MODULE_LICENSE("GPL");
348