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c26f642e DA |
1 | /* |
2 | * SoC audio for HP iPAQ hx4700 | |
3 | * | |
4 | * Copyright (c) 2009 Philipp Zabel | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2 of the License, or (at your | |
9 | * option) any later version. | |
10 | * | |
11 | */ | |
12 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/timer.h> | |
15 | #include <linux/interrupt.h> | |
16 | #include <linux/platform_device.h> | |
17 | #include <linux/delay.h> | |
18 | #include <linux/gpio.h> | |
19 | ||
20 | #include <sound/core.h> | |
21 | #include <sound/jack.h> | |
22 | #include <sound/pcm.h> | |
23 | #include <sound/pcm_params.h> | |
24 | #include <sound/soc.h> | |
25 | ||
26 | #include <mach/hx4700.h> | |
27 | #include <asm/mach-types.h> | |
28 | #include "pxa2xx-i2s.h" | |
29 | ||
30 | #include "../codecs/ak4641.h" | |
31 | ||
32 | static struct snd_soc_jack hs_jack; | |
33 | ||
34 | /* Headphones jack detection DAPM pin */ | |
35 | static struct snd_soc_jack_pin hs_jack_pin[] = { | |
36 | { | |
37 | .pin = "Headphone Jack", | |
38 | .mask = SND_JACK_HEADPHONE, | |
39 | }, | |
40 | { | |
41 | .pin = "Speaker", | |
42 | /* disable speaker when hp jack is inserted */ | |
43 | .mask = SND_JACK_HEADPHONE, | |
44 | .invert = 1, | |
45 | }, | |
46 | }; | |
47 | ||
48 | /* Headphones jack detection GPIO */ | |
49 | static struct snd_soc_jack_gpio hs_jack_gpio = { | |
50 | .gpio = GPIO75_HX4700_EARPHONE_nDET, | |
51 | .invert = true, | |
52 | .name = "hp-gpio", | |
53 | .report = SND_JACK_HEADPHONE, | |
54 | .debounce_time = 200, | |
55 | }; | |
56 | ||
57 | /* | |
58 | * iPAQ hx4700 uses I2S for capture and playback. | |
59 | */ | |
60 | static int hx4700_hw_params(struct snd_pcm_substream *substream, | |
61 | struct snd_pcm_hw_params *params) | |
62 | { | |
63 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
64 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
65 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
66 | int ret = 0; | |
67 | ||
c26f642e DA |
68 | /* set the I2S system clock as output */ |
69 | ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0, | |
70 | SND_SOC_CLOCK_OUT); | |
71 | if (ret < 0) | |
72 | return ret; | |
73 | ||
74 | /* inform codec driver about clock freq * | |
75 | * (PXA I2S always uses divider 256) */ | |
76 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, 256 * params_rate(params), | |
77 | SND_SOC_CLOCK_IN); | |
78 | if (ret < 0) | |
79 | return ret; | |
80 | ||
81 | return 0; | |
82 | } | |
83 | ||
84 | static struct snd_soc_ops hx4700_ops = { | |
85 | .hw_params = hx4700_hw_params, | |
86 | }; | |
87 | ||
88 | static int hx4700_spk_power(struct snd_soc_dapm_widget *w, | |
89 | struct snd_kcontrol *k, int event) | |
90 | { | |
91 | gpio_set_value(GPIO107_HX4700_SPK_nSD, !!SND_SOC_DAPM_EVENT_ON(event)); | |
92 | return 0; | |
93 | } | |
94 | ||
95 | static int hx4700_hp_power(struct snd_soc_dapm_widget *w, | |
96 | struct snd_kcontrol *k, int event) | |
97 | { | |
98 | gpio_set_value(GPIO92_HX4700_HP_DRIVER, !!SND_SOC_DAPM_EVENT_ON(event)); | |
99 | return 0; | |
100 | } | |
101 | ||
102 | /* hx4700 machine dapm widgets */ | |
103 | static const struct snd_soc_dapm_widget hx4700_dapm_widgets[] = { | |
104 | SND_SOC_DAPM_HP("Headphone Jack", hx4700_hp_power), | |
105 | SND_SOC_DAPM_SPK("Speaker", hx4700_spk_power), | |
106 | SND_SOC_DAPM_MIC("Built-in Microphone", NULL), | |
107 | }; | |
108 | ||
109 | /* hx4700 machine audio_map */ | |
110 | static const struct snd_soc_dapm_route hx4700_audio_map[] = { | |
111 | ||
112 | /* Headphone connected to LOUT, ROUT */ | |
113 | {"Headphone Jack", NULL, "LOUT"}, | |
114 | {"Headphone Jack", NULL, "ROUT"}, | |
115 | ||
116 | /* Speaker connected to MOUT2 */ | |
117 | {"Speaker", NULL, "MOUT2"}, | |
118 | ||
119 | /* Microphone connected to MICIN */ | |
120 | {"MICIN", NULL, "Built-in Microphone"}, | |
121 | {"AIN", NULL, "MICOUT"}, | |
122 | }; | |
123 | ||
124 | /* | |
125 | * Logic for a ak4641 as connected on a HP iPAQ hx4700 | |
126 | */ | |
127 | static int hx4700_ak4641_init(struct snd_soc_pcm_runtime *rtd) | |
128 | { | |
129 | struct snd_soc_codec *codec = rtd->codec; | |
130 | struct snd_soc_dapm_context *dapm = &codec->dapm; | |
131 | int err; | |
132 | ||
133 | /* NC codec pins */ | |
134 | /* FIXME: is anything connected here? */ | |
135 | snd_soc_dapm_nc_pin(dapm, "MOUT1"); | |
136 | snd_soc_dapm_nc_pin(dapm, "MICEXT"); | |
137 | snd_soc_dapm_nc_pin(dapm, "AUX"); | |
138 | ||
139 | /* Jack detection API stuff */ | |
140 | err = snd_soc_jack_new(codec, "Headphone Jack", | |
141 | SND_JACK_HEADPHONE, &hs_jack); | |
142 | if (err) | |
143 | return err; | |
144 | ||
145 | err = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pin), | |
146 | hs_jack_pin); | |
147 | if (err) | |
148 | return err; | |
149 | ||
150 | err = snd_soc_jack_add_gpios(&hs_jack, 1, &hs_jack_gpio); | |
151 | ||
152 | return err; | |
153 | } | |
154 | ||
155 | /* hx4700 digital audio interface glue - connects codec <--> CPU */ | |
156 | static struct snd_soc_dai_link hx4700_dai = { | |
157 | .name = "ak4641", | |
158 | .stream_name = "AK4641", | |
159 | .cpu_dai_name = "pxa2xx-i2s", | |
160 | .codec_dai_name = "ak4641-hifi", | |
161 | .platform_name = "pxa-pcm-audio", | |
162 | .codec_name = "ak4641.0-0012", | |
163 | .init = hx4700_ak4641_init, | |
673847cf AL |
164 | .dai_fmt = SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF | |
165 | SND_SOC_DAIFMT_CBS_CFS, | |
c26f642e DA |
166 | .ops = &hx4700_ops, |
167 | }; | |
168 | ||
169 | /* hx4700 audio machine driver */ | |
170 | static struct snd_soc_card snd_soc_card_hx4700 = { | |
171 | .name = "iPAQ hx4700", | |
561c6a17 | 172 | .owner = THIS_MODULE, |
c26f642e DA |
173 | .dai_link = &hx4700_dai, |
174 | .num_links = 1, | |
175 | .dapm_widgets = hx4700_dapm_widgets, | |
176 | .num_dapm_widgets = ARRAY_SIZE(hx4700_dapm_widgets), | |
177 | .dapm_routes = hx4700_audio_map, | |
178 | .num_dapm_routes = ARRAY_SIZE(hx4700_audio_map), | |
179 | }; | |
180 | ||
181 | static struct gpio hx4700_audio_gpios[] = { | |
182 | { GPIO107_HX4700_SPK_nSD, GPIOF_OUT_INIT_HIGH, "SPK_POWER" }, | |
183 | { GPIO92_HX4700_HP_DRIVER, GPIOF_OUT_INIT_LOW, "EP_POWER" }, | |
184 | }; | |
185 | ||
d7f1be84 | 186 | static int hx4700_audio_probe(struct platform_device *pdev) |
c26f642e DA |
187 | { |
188 | int ret; | |
189 | ||
190 | if (!machine_is_h4700()) | |
191 | return -ENODEV; | |
192 | ||
193 | ret = gpio_request_array(hx4700_audio_gpios, | |
194 | ARRAY_SIZE(hx4700_audio_gpios)); | |
195 | if (ret) | |
196 | return ret; | |
197 | ||
198 | snd_soc_card_hx4700.dev = &pdev->dev; | |
199 | ret = snd_soc_register_card(&snd_soc_card_hx4700); | |
200 | if (ret) | |
497d4965 AL |
201 | gpio_free_array(hx4700_audio_gpios, |
202 | ARRAY_SIZE(hx4700_audio_gpios)); | |
c26f642e | 203 | |
497d4965 | 204 | return ret; |
c26f642e DA |
205 | } |
206 | ||
d7f1be84 | 207 | static int hx4700_audio_remove(struct platform_device *pdev) |
c26f642e DA |
208 | { |
209 | snd_soc_jack_free_gpios(&hs_jack, 1, &hs_jack_gpio); | |
210 | snd_soc_unregister_card(&snd_soc_card_hx4700); | |
211 | ||
212 | gpio_set_value(GPIO92_HX4700_HP_DRIVER, 0); | |
213 | gpio_set_value(GPIO107_HX4700_SPK_nSD, 0); | |
214 | ||
215 | gpio_free_array(hx4700_audio_gpios, ARRAY_SIZE(hx4700_audio_gpios)); | |
216 | return 0; | |
217 | } | |
218 | ||
219 | static struct platform_driver hx4700_audio_driver = { | |
220 | .driver = { | |
221 | .name = "hx4700-audio", | |
222 | .owner = THIS_MODULE, | |
223 | .pm = &snd_soc_pm_ops, | |
224 | }, | |
225 | .probe = hx4700_audio_probe, | |
d7f1be84 | 226 | .remove = hx4700_audio_remove, |
c26f642e DA |
227 | }; |
228 | ||
2f702a19 | 229 | module_platform_driver(hx4700_audio_driver); |
c26f642e DA |
230 | |
231 | MODULE_AUTHOR("Philipp Zabel"); | |
232 | MODULE_DESCRIPTION("ALSA SoC iPAQ hx4700"); | |
233 | MODULE_LICENSE("GPL"); | |
234 | MODULE_ALIAS("platform:hx4700-audio"); |