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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * tosa.c -- SoC audio for Tosa
4 *
5 * Copyright 2005 Wolfson Microelectronics PLC.
6 * Copyright 2005 Openedhand Ltd.
7 *
8 * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
9 * Richard Purdie <richard@openedhand.com>
10 *
11 * GPIO's
12 * 1 - Jack Insertion
13 * 5 - Hookswitch (headset answer/hang up switch)
14 */
15
16#include <linux/module.h>
17#include <linux/moduleparam.h>
18#include <linux/device.h>
19#include <linux/gpio.h>
20
21#include <sound/core.h>
22#include <sound/pcm.h>
23#include <sound/soc.h>
24
25#include <asm/mach-types.h>
26#include <mach/tosa.h>
27#include <mach/audio.h>
28
29#define TOSA_HP 0
30#define TOSA_MIC_INT 1
31#define TOSA_HEADSET 2
32#define TOSA_HP_OFF 3
33#define TOSA_SPK_ON 0
34#define TOSA_SPK_OFF 1
35
36static int tosa_jack_func;
37static int tosa_spk_func;
38
39static void tosa_ext_control(struct snd_soc_dapm_context *dapm)
40{
41
42 snd_soc_dapm_mutex_lock(dapm);
43
44 /* set up jack connection */
45 switch (tosa_jack_func) {
46 case TOSA_HP:
47 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic (Internal)");
48 snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
49 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
50 break;
51 case TOSA_MIC_INT:
52 snd_soc_dapm_enable_pin_unlocked(dapm, "Mic (Internal)");
53 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
54 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
55 break;
56 case TOSA_HEADSET:
57 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic (Internal)");
58 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
59 snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack");
60 break;
61 }
62
63 if (tosa_spk_func == TOSA_SPK_ON)
64 snd_soc_dapm_enable_pin_unlocked(dapm, "Speaker");
65 else
66 snd_soc_dapm_disable_pin_unlocked(dapm, "Speaker");
67
68 snd_soc_dapm_sync_unlocked(dapm);
69
70 snd_soc_dapm_mutex_unlock(dapm);
71}
72
73static int tosa_startup(struct snd_pcm_substream *substream)
74{
75 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
76
77 /* check the jack status at stream startup */
78 tosa_ext_control(&rtd->card->dapm);
79
80 return 0;
81}
82
83static const struct snd_soc_ops tosa_ops = {
84 .startup = tosa_startup,
85};
86
87static int tosa_get_jack(struct snd_kcontrol *kcontrol,
88 struct snd_ctl_elem_value *ucontrol)
89{
90 ucontrol->value.enumerated.item[0] = tosa_jack_func;
91 return 0;
92}
93
94static int tosa_set_jack(struct snd_kcontrol *kcontrol,
95 struct snd_ctl_elem_value *ucontrol)
96{
97 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
98
99 if (tosa_jack_func == ucontrol->value.enumerated.item[0])
100 return 0;
101
102 tosa_jack_func = ucontrol->value.enumerated.item[0];
103 tosa_ext_control(&card->dapm);
104 return 1;
105}
106
107static int tosa_get_spk(struct snd_kcontrol *kcontrol,
108 struct snd_ctl_elem_value *ucontrol)
109{
110 ucontrol->value.enumerated.item[0] = tosa_spk_func;
111 return 0;
112}
113
114static int tosa_set_spk(struct snd_kcontrol *kcontrol,
115 struct snd_ctl_elem_value *ucontrol)
116{
117 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
118
119 if (tosa_spk_func == ucontrol->value.enumerated.item[0])
120 return 0;
121
122 tosa_spk_func = ucontrol->value.enumerated.item[0];
123 tosa_ext_control(&card->dapm);
124 return 1;
125}
126
127/* tosa dapm event handlers */
128static int tosa_hp_event(struct snd_soc_dapm_widget *w,
129 struct snd_kcontrol *k, int event)
130{
131 gpio_set_value(TOSA_GPIO_L_MUTE, SND_SOC_DAPM_EVENT_ON(event) ? 1 : 0);
132 return 0;
133}
134
135/* tosa machine dapm widgets */
136static const struct snd_soc_dapm_widget tosa_dapm_widgets[] = {
137SND_SOC_DAPM_HP("Headphone Jack", tosa_hp_event),
138SND_SOC_DAPM_HP("Headset Jack", NULL),
139SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
140SND_SOC_DAPM_SPK("Speaker", NULL),
141};
142
143/* tosa audio map */
144static const struct snd_soc_dapm_route audio_map[] = {
145
146 /* headphone connected to HPOUTL, HPOUTR */
147 {"Headphone Jack", NULL, "HPOUTL"},
148 {"Headphone Jack", NULL, "HPOUTR"},
149
150 /* ext speaker connected to LOUT2, ROUT2 */
151 {"Speaker", NULL, "LOUT2"},
152 {"Speaker", NULL, "ROUT2"},
153
154 /* internal mic is connected to mic1, mic2 differential - with bias */
155 {"MIC1", NULL, "Mic Bias"},
156 {"MIC2", NULL, "Mic Bias"},
157 {"Mic Bias", NULL, "Mic (Internal)"},
158
159 /* headset is connected to HPOUTR, and LINEINR with bias */
160 {"Headset Jack", NULL, "HPOUTR"},
161 {"LINEINR", NULL, "Mic Bias"},
162 {"Mic Bias", NULL, "Headset Jack"},
163};
164
165static const char * const jack_function[] = {"Headphone", "Mic", "Line",
166 "Headset", "Off"};
167static const char * const spk_function[] = {"On", "Off"};
168static const struct soc_enum tosa_enum[] = {
169 SOC_ENUM_SINGLE_EXT(5, jack_function),
170 SOC_ENUM_SINGLE_EXT(2, spk_function),
171};
172
173static const struct snd_kcontrol_new tosa_controls[] = {
174 SOC_ENUM_EXT("Jack Function", tosa_enum[0], tosa_get_jack,
175 tosa_set_jack),
176 SOC_ENUM_EXT("Speaker Function", tosa_enum[1], tosa_get_spk,
177 tosa_set_spk),
178};
179
180SND_SOC_DAILINK_DEFS(ac97,
181 DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97")),
182 DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec", "wm9712-hifi")),
183 DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
184
185SND_SOC_DAILINK_DEFS(ac97_aux,
186 DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97-aux")),
187 DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec", "wm9712-aux")),
188 DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
189
190static struct snd_soc_dai_link tosa_dai[] = {
191{
192 .name = "AC97",
193 .stream_name = "AC97 HiFi",
194 .ops = &tosa_ops,
195 SND_SOC_DAILINK_REG(ac97),
196},
197{
198 .name = "AC97 Aux",
199 .stream_name = "AC97 Aux",
200 .ops = &tosa_ops,
201 SND_SOC_DAILINK_REG(ac97_aux),
202},
203};
204
205static struct snd_soc_card tosa = {
206 .name = "Tosa",
207 .owner = THIS_MODULE,
208 .dai_link = tosa_dai,
209 .num_links = ARRAY_SIZE(tosa_dai),
210
211 .controls = tosa_controls,
212 .num_controls = ARRAY_SIZE(tosa_controls),
213 .dapm_widgets = tosa_dapm_widgets,
214 .num_dapm_widgets = ARRAY_SIZE(tosa_dapm_widgets),
215 .dapm_routes = audio_map,
216 .num_dapm_routes = ARRAY_SIZE(audio_map),
217 .fully_routed = true,
218};
219
220static int tosa_probe(struct platform_device *pdev)
221{
222 struct snd_soc_card *card = ⤩
223 int ret;
224
225 ret = gpio_request_one(TOSA_GPIO_L_MUTE, GPIOF_OUT_INIT_LOW,
226 "Headphone Jack");
227 if (ret)
228 return ret;
229
230 card->dev = &pdev->dev;
231
232 ret = devm_snd_soc_register_card(&pdev->dev, card);
233 if (ret) {
234 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
235 ret);
236 gpio_free(TOSA_GPIO_L_MUTE);
237 }
238 return ret;
239}
240
241static int tosa_remove(struct platform_device *pdev)
242{
243 gpio_free(TOSA_GPIO_L_MUTE);
244 return 0;
245}
246
247static struct platform_driver tosa_driver = {
248 .driver = {
249 .name = "tosa-audio",
250 .pm = &snd_soc_pm_ops,
251 },
252 .probe = tosa_probe,
253 .remove = tosa_remove,
254};
255
256module_platform_driver(tosa_driver);
257
258/* Module information */
259MODULE_AUTHOR("Richard Purdie");
260MODULE_DESCRIPTION("ALSA SoC Tosa");
261MODULE_LICENSE("GPL");
262MODULE_ALIAS("platform:tosa-audio");