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
21struct apq8016_sbc_data {
22	struct snd_soc_card card;
23	void __iomem *mic_iomux;
24	void __iomem *spkr_iomux;
25	struct snd_soc_jack jack;
26	bool jack_setup;
27};
28
29#define MIC_CTRL_TER_WS_SLAVE_SEL	BIT(21)
30#define MIC_CTRL_QUA_WS_SLAVE_SEL_10	BIT(17)
31#define MIC_CTRL_TLMM_SCLK_EN		BIT(1)
32#define	SPKR_CTL_PRI_WS_SLAVE_SEL_11	(BIT(17) | BIT(16))
33#define DEFAULT_MCLK_RATE		9600000
34
35static int apq8016_sbc_dai_init(struct snd_soc_pcm_runtime *rtd)
36{
37	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
38	struct snd_soc_dai *codec_dai;
39	struct snd_soc_component *component;
40	struct snd_soc_card *card = rtd->card;
41	struct apq8016_sbc_data *pdata = snd_soc_card_get_drvdata(card);
42	int i, rval;
43
44	switch (cpu_dai->id) {
45	case MI2S_PRIMARY:
46		writel(readl(pdata->spkr_iomux) | SPKR_CTL_PRI_WS_SLAVE_SEL_11,
47			pdata->spkr_iomux);
48		break;
49
50	case MI2S_QUATERNARY:
51		/* Configure the Quat MI2S to TLMM */
52		writel(readl(pdata->mic_iomux) | MIC_CTRL_QUA_WS_SLAVE_SEL_10 |
53			MIC_CTRL_TLMM_SCLK_EN,
54			pdata->mic_iomux);
55		break;
56	case MI2S_TERTIARY:
57		writel(readl(pdata->mic_iomux) | MIC_CTRL_TER_WS_SLAVE_SEL |
58			MIC_CTRL_TLMM_SCLK_EN,
59			pdata->mic_iomux);
60
61		break;
62
63	default:
64		dev_err(card->dev, "unsupported cpu dai configuration\n");
65		return -EINVAL;
66
67	}
68
69	if (!pdata->jack_setup) {
70		struct snd_jack *jack;
71
72		rval = snd_soc_card_jack_new(card, "Headset Jack",
73					     SND_JACK_HEADSET |
74					     SND_JACK_HEADPHONE |
75					     SND_JACK_BTN_0 | SND_JACK_BTN_1 |
76					     SND_JACK_BTN_2 | SND_JACK_BTN_3 |
77					     SND_JACK_BTN_4,
78					     &pdata->jack, NULL, 0);
79
80		if (rval < 0) {
81			dev_err(card->dev, "Unable to add Headphone Jack\n");
82			return rval;
83		}
84
85		jack = pdata->jack.jack;
86
87		snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
88		snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
89		snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
90		snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
91		pdata->jack_setup = true;
92	}
93
94	for_each_rtd_codec_dais(rtd, i, codec_dai) {
95
96		component = codec_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
114static void apq8016_sbc_add_ops(struct snd_soc_card *card)
115{
116	struct snd_soc_dai_link *link;
117	int i;
118
119	for_each_card_prelinks(card, i, link)
120		link->init = apq8016_sbc_dai_init;
121}
122
123static const struct snd_soc_dapm_widget apq8016_sbc_dapm_widgets[] = {
124
125	SND_SOC_DAPM_MIC("Handset Mic", NULL),
126	SND_SOC_DAPM_MIC("Headset Mic", NULL),
127	SND_SOC_DAPM_MIC("Secondary Mic", NULL),
128	SND_SOC_DAPM_MIC("Digital Mic1", NULL),
129	SND_SOC_DAPM_MIC("Digital Mic2", NULL),
130};
131
132static int apq8016_sbc_platform_probe(struct platform_device *pdev)
133{
134	struct device *dev = &pdev->dev;
135	struct snd_soc_card *card;
136	struct apq8016_sbc_data *data;
137	struct resource *res;
138	int ret;
139
140	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
141	if (!data)
142		return -ENOMEM;
143
144	card = &data->card;
145	card->dev = dev;
146	card->owner = THIS_MODULE;
147	card->dapm_widgets = apq8016_sbc_dapm_widgets;
148	card->num_dapm_widgets = ARRAY_SIZE(apq8016_sbc_dapm_widgets);
149
150	ret = qcom_snd_parse_of(card);
151	if (ret)
152		return ret;
153
154	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mic-iomux");
155	data->mic_iomux = devm_ioremap_resource(dev, res);
156	if (IS_ERR(data->mic_iomux))
157		return PTR_ERR(data->mic_iomux);
158
159	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "spkr-iomux");
160	data->spkr_iomux = devm_ioremap_resource(dev, res);
161	if (IS_ERR(data->spkr_iomux))
162		return PTR_ERR(data->spkr_iomux);
163
164	snd_soc_card_set_drvdata(card, data);
165
166	apq8016_sbc_add_ops(card);
167	return devm_snd_soc_register_card(&pdev->dev, card);
168}
169
170static const struct of_device_id apq8016_sbc_device_id[]  = {
171	{ .compatible = "qcom,apq8016-sbc-sndcard" },
172	{},
173};
174MODULE_DEVICE_TABLE(of, apq8016_sbc_device_id);
175
176static struct platform_driver apq8016_sbc_platform_driver = {
177	.driver = {
178		.name = "qcom-apq8016-sbc",
179		.of_match_table = of_match_ptr(apq8016_sbc_device_id),
180	},
181	.probe = apq8016_sbc_platform_probe,
182};
183module_platform_driver(apq8016_sbc_platform_driver);
184
185MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
186MODULE_DESCRIPTION("APQ8016 ASoC Machine Driver");
187MODULE_LICENSE("GPL v2");
188