1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * ALSA SoC CQ0093 Voice Codec Driver for DaVinci platforms
4 *
5 * Copyright (C) 2010 Texas Instruments, Inc
6 *
7 * Author: Miguel Aguilar <miguel.aguilar@ridgerun.com>
8 */
9#include <linux/module.h>
10#include <linux/moduleparam.h>
11#include <linux/init.h>
12#include <linux/io.h>
13#include <linux/delay.h>
14#include <linux/pm.h>
15#include <linux/platform_device.h>
16#include <linux/device.h>
17#include <linux/slab.h>
18#include <linux/clk.h>
19#include <linux/mfd/davinci_voicecodec.h>
20#include <linux/spi/spi.h>
21
22#include <sound/core.h>
23#include <sound/pcm.h>
24#include <sound/pcm_params.h>
25#include <sound/soc.h>
26#include <sound/initval.h>
27
28static const struct snd_kcontrol_new cq93vc_snd_controls[] = {
29	SOC_SINGLE("PGA Capture Volume", DAVINCI_VC_REG05, 0, 0x03, 0),
30	SOC_SINGLE("Mono DAC Playback Volume", DAVINCI_VC_REG09, 0, 0x3f, 0),
31};
32
33static int cq93vc_mute(struct snd_soc_dai *dai, int mute, int direction)
34{
35	struct snd_soc_component *component = dai->component;
36	u8 reg;
37
38	if (mute)
39		reg = DAVINCI_VC_REG09_MUTE;
40	else
41		reg = 0;
42
43	snd_soc_component_update_bits(component, DAVINCI_VC_REG09, DAVINCI_VC_REG09_MUTE,
44			    reg);
45
46	return 0;
47}
48
49static int cq93vc_set_dai_sysclk(struct snd_soc_dai *codec_dai,
50				 int clk_id, unsigned int freq, int dir)
51{
52	switch (freq) {
53	case 22579200:
54	case 27000000:
55	case 33868800:
56		return 0;
57	}
58
59	return -EINVAL;
60}
61
62static int cq93vc_set_bias_level(struct snd_soc_component *component,
63				enum snd_soc_bias_level level)
64{
65	switch (level) {
66	case SND_SOC_BIAS_ON:
67		snd_soc_component_write(component, DAVINCI_VC_REG12,
68			     DAVINCI_VC_REG12_POWER_ALL_ON);
69		break;
70	case SND_SOC_BIAS_PREPARE:
71		break;
72	case SND_SOC_BIAS_STANDBY:
73		snd_soc_component_write(component, DAVINCI_VC_REG12,
74			     DAVINCI_VC_REG12_POWER_ALL_OFF);
75		break;
76	case SND_SOC_BIAS_OFF:
77		/* force all power off */
78		snd_soc_component_write(component, DAVINCI_VC_REG12,
79			     DAVINCI_VC_REG12_POWER_ALL_OFF);
80		break;
81	}
82
83	return 0;
84}
85
86#define CQ93VC_RATES	(SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000)
87#define CQ93VC_FORMATS	(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE)
88
89static const struct snd_soc_dai_ops cq93vc_dai_ops = {
90	.mute_stream	= cq93vc_mute,
91	.set_sysclk	= cq93vc_set_dai_sysclk,
92	.no_capture_mute = 1,
93};
94
95static struct snd_soc_dai_driver cq93vc_dai = {
96	.name = "cq93vc-hifi",
97	.playback = {
98		.stream_name = "Playback",
99		.channels_min = 1,
100		.channels_max = 2,
101		.rates = CQ93VC_RATES,
102		.formats = CQ93VC_FORMATS,},
103	.capture = {
104		.stream_name = "Capture",
105		.channels_min = 1,
106		.channels_max = 2,
107		.rates = CQ93VC_RATES,
108		.formats = CQ93VC_FORMATS,},
109	.ops = &cq93vc_dai_ops,
110};
111
112static int cq93vc_probe(struct snd_soc_component *component)
113{
114	struct davinci_vc *davinci_vc = component->dev->platform_data;
115
116	snd_soc_component_init_regmap(component, davinci_vc->regmap);
117
118	return 0;
119}
120
121static const struct snd_soc_component_driver soc_component_dev_cq93vc = {
122	.set_bias_level		= cq93vc_set_bias_level,
123	.probe			= cq93vc_probe,
124	.controls		= cq93vc_snd_controls,
125	.num_controls		= ARRAY_SIZE(cq93vc_snd_controls),
126	.idle_bias_on		= 1,
127	.use_pmdown_time	= 1,
128	.endianness		= 1,
129};
130
131static int cq93vc_platform_probe(struct platform_device *pdev)
132{
133	return devm_snd_soc_register_component(&pdev->dev,
134			&soc_component_dev_cq93vc, &cq93vc_dai, 1);
135}
136
137static struct platform_driver cq93vc_codec_driver = {
138	.driver = {
139			.name = "cq93vc-codec",
140	},
141
142	.probe = cq93vc_platform_probe,
143};
144
145module_platform_driver(cq93vc_codec_driver);
146
147MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver");
148MODULE_AUTHOR("Miguel Aguilar");
149MODULE_LICENSE("GPL");
150