1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Handles the Mitac mioa701 SoC system
4 *
5 * Copyright (C) 2008 Robert Jarzmik
6 *
7 * This is a little schema of the sound interconnections :
8 *
9 *    Sagem X200                 Wolfson WM9713
10 *    +--------+             +-------------------+      Rear Speaker
11 *    |        |             |                   |           /-+
12 *    |        +--->----->---+MONOIN         SPKL+--->----+-+  |
13 *    |  GSM   |             |                   |        | |  |
14 *    |        +--->----->---+PCBEEP         SPKR+--->----+-+  |
15 *    |  CHIP  |             |                   |           \-+
16 *    |        +---<-----<---+MONO               |
17 *    |        |             |                   |      Front Speaker
18 *    +--------+             |                   |           /-+
19 *                           |                HPL+--->----+-+  |
20 *                           |                   |        | |  |
21 *                           |               OUT3+--->----+-+  |
22 *                           |                   |           \-+
23 *                           |                   |
24 *                           |                   |     Front Micro
25 *                           |                   |         +
26 *                           |               MIC1+-----<--+o+
27 *                           |                   |         +
28 *                           +-------------------+        ---
29 */
30
31#include <linux/module.h>
32#include <linux/moduleparam.h>
33#include <linux/platform_device.h>
34
35#include <asm/mach-types.h>
36#include <mach/audio.h>
37
38#include <sound/core.h>
39#include <sound/pcm.h>
40#include <sound/soc.h>
41#include <sound/initval.h>
42#include <sound/ac97_codec.h>
43
44#include "../codecs/wm9713.h"
45
46#define AC97_GPIO_PULL		0x58
47
48/* Use GPIO8 for rear speaker amplifier */
49static int rear_amp_power(struct snd_soc_component *component, int power)
50{
51	unsigned short reg;
52
53	if (power) {
54		reg = snd_soc_component_read(component, AC97_GPIO_CFG);
55		snd_soc_component_write(component, AC97_GPIO_CFG, reg | 0x0100);
56		reg = snd_soc_component_read(component, AC97_GPIO_PULL);
57		snd_soc_component_write(component, AC97_GPIO_PULL, reg | (1<<15));
58	} else {
59		reg = snd_soc_component_read(component, AC97_GPIO_CFG);
60		snd_soc_component_write(component, AC97_GPIO_CFG, reg & ~0x0100);
61		reg = snd_soc_component_read(component, AC97_GPIO_PULL);
62		snd_soc_component_write(component, AC97_GPIO_PULL, reg & ~(1<<15));
63	}
64
65	return 0;
66}
67
68static int rear_amp_event(struct snd_soc_dapm_widget *widget,
69			  struct snd_kcontrol *kctl, int event)
70{
71	struct snd_soc_card *card = widget->dapm->card;
72	struct snd_soc_pcm_runtime *rtd;
73	struct snd_soc_component *component;
74
75	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
76	component = asoc_rtd_to_codec(rtd, 0)->component;
77	return rear_amp_power(component, SND_SOC_DAPM_EVENT_ON(event));
78}
79
80/* mioa701 machine dapm widgets */
81static const struct snd_soc_dapm_widget mioa701_dapm_widgets[] = {
82	SND_SOC_DAPM_SPK("Front Speaker", NULL),
83	SND_SOC_DAPM_SPK("Rear Speaker", rear_amp_event),
84	SND_SOC_DAPM_MIC("Headset", NULL),
85	SND_SOC_DAPM_LINE("GSM Line Out", NULL),
86	SND_SOC_DAPM_LINE("GSM Line In", NULL),
87	SND_SOC_DAPM_MIC("Headset Mic", NULL),
88	SND_SOC_DAPM_MIC("Front Mic", NULL),
89};
90
91static const struct snd_soc_dapm_route audio_map[] = {
92	/* Call Mic */
93	{"Mic Bias", NULL, "Front Mic"},
94	{"MIC1", NULL, "Mic Bias"},
95
96	/* Headset Mic */
97	{"LINEL", NULL, "Headset Mic"},
98	{"LINER", NULL, "Headset Mic"},
99
100	/* GSM Module */
101	{"MONOIN", NULL, "GSM Line Out"},
102	{"PCBEEP", NULL, "GSM Line Out"},
103	{"GSM Line In", NULL, "MONO"},
104
105	/* headphone connected to HPL, HPR */
106	{"Headset", NULL, "HPL"},
107	{"Headset", NULL, "HPR"},
108
109	/* front speaker connected to HPL, OUT3 */
110	{"Front Speaker", NULL, "HPL"},
111	{"Front Speaker", NULL, "OUT3"},
112
113	/* rear speaker connected to SPKL, SPKR */
114	{"Rear Speaker", NULL, "SPKL"},
115	{"Rear Speaker", NULL, "SPKR"},
116};
117
118static int mioa701_wm9713_init(struct snd_soc_pcm_runtime *rtd)
119{
120	struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
121
122	/* Prepare GPIO8 for rear speaker amplifier */
123	snd_soc_component_update_bits(component, AC97_GPIO_CFG, 0x100, 0x100);
124
125	/* Prepare MIC input */
126	snd_soc_component_update_bits(component, AC97_3D_CONTROL, 0xc000, 0xc000);
127
128	return 0;
129}
130
131static struct snd_soc_ops mioa701_ops;
132
133SND_SOC_DAILINK_DEFS(ac97,
134	DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97")),
135	DAILINK_COMP_ARRAY(COMP_CODEC("wm9713-codec", "wm9713-hifi")),
136	DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
137
138SND_SOC_DAILINK_DEFS(ac97_aux,
139	DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97-aux")),
140	DAILINK_COMP_ARRAY(COMP_CODEC("wm9713-codec", "wm9713-aux")),
141	DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
142
143static struct snd_soc_dai_link mioa701_dai[] = {
144	{
145		.name = "AC97",
146		.stream_name = "AC97 HiFi",
147		.init = mioa701_wm9713_init,
148		.ops = &mioa701_ops,
149		SND_SOC_DAILINK_REG(ac97),
150	},
151	{
152		.name = "AC97 Aux",
153		.stream_name = "AC97 Aux",
154		.ops = &mioa701_ops,
155		SND_SOC_DAILINK_REG(ac97_aux),
156	},
157};
158
159static struct snd_soc_card mioa701 = {
160	.name = "MioA701",
161	.owner = THIS_MODULE,
162	.dai_link = mioa701_dai,
163	.num_links = ARRAY_SIZE(mioa701_dai),
164
165	.dapm_widgets = mioa701_dapm_widgets,
166	.num_dapm_widgets = ARRAY_SIZE(mioa701_dapm_widgets),
167	.dapm_routes = audio_map,
168	.num_dapm_routes = ARRAY_SIZE(audio_map),
169};
170
171static int mioa701_wm9713_probe(struct platform_device *pdev)
172{
173	int rc;
174
175	if (!machine_is_mioa701())
176		return -ENODEV;
177
178	mioa701.dev = &pdev->dev;
179	rc = devm_snd_soc_register_card(&pdev->dev, &mioa701);
180	if (!rc)
181		dev_warn(&pdev->dev, "Be warned that incorrect mixers/muxes setup will "
182			 "lead to overheating and possible destruction of your device."
183			 " Do not use without a good knowledge of mio's board design!\n");
184	return rc;
185}
186
187static struct platform_driver mioa701_wm9713_driver = {
188	.probe		= mioa701_wm9713_probe,
189	.driver		= {
190		.name		= "mioa701-wm9713",
191		.pm     = &snd_soc_pm_ops,
192	},
193};
194
195module_platform_driver(mioa701_wm9713_driver);
196
197/* Module information */
198MODULE_AUTHOR("Robert Jarzmik (rjarzmik@free.fr)");
199MODULE_DESCRIPTION("ALSA SoC WM9713 MIO A701");
200MODULE_LICENSE("GPL");
201MODULE_ALIAS("platform:mioa701-wm9713");
202