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d21e0f4c MV |
1 | /* |
2 | * linux/sound/soc/pxa/z2.c | |
3 | * | |
4 | * SoC Audio driver for Aeronix Zipit Z2 | |
5 | * | |
6 | * Copyright (C) 2009 Ken McGuire <kenm@desertweyr.com> | |
7 | * Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.com> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/moduleparam.h> | |
16 | #include <linux/timer.h> | |
17 | #include <linux/interrupt.h> | |
18 | #include <linux/platform_device.h> | |
19 | #include <linux/gpio.h> | |
20 | ||
21 | #include <sound/core.h> | |
22 | #include <sound/pcm.h> | |
23 | #include <sound/soc.h> | |
d21e0f4c MV |
24 | #include <sound/jack.h> |
25 | ||
26 | #include <asm/mach-types.h> | |
27 | #include <mach/hardware.h> | |
28 | #include <mach/audio.h> | |
29 | #include <mach/z2.h> | |
30 | ||
31 | #include "../codecs/wm8750.h" | |
d21e0f4c MV |
32 | #include "pxa2xx-i2s.h" |
33 | ||
34 | static struct snd_soc_card snd_soc_z2; | |
35 | ||
36 | static int z2_hw_params(struct snd_pcm_substream *substream, | |
37 | struct snd_pcm_hw_params *params) | |
38 | { | |
39 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad LG |
40 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
41 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
d21e0f4c MV |
42 | unsigned int clk = 0; |
43 | int ret = 0; | |
44 | ||
45 | switch (params_rate(params)) { | |
46 | case 8000: | |
47 | case 16000: | |
48 | case 48000: | |
49 | case 96000: | |
50 | clk = 12288000; | |
51 | break; | |
52 | case 11025: | |
53 | case 22050: | |
54 | case 44100: | |
55 | clk = 11289600; | |
56 | break; | |
57 | } | |
58 | ||
d21e0f4c MV |
59 | /* set the codec system clock for DAC and ADC */ |
60 | ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk, | |
61 | SND_SOC_CLOCK_IN); | |
62 | if (ret < 0) | |
63 | return ret; | |
64 | ||
65 | /* set the I2S system clock as input (unused) */ | |
66 | ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0, | |
67 | SND_SOC_CLOCK_IN); | |
68 | if (ret < 0) | |
69 | return ret; | |
70 | ||
71 | return 0; | |
72 | } | |
73 | ||
74 | static struct snd_soc_jack hs_jack; | |
75 | ||
76 | /* Headset jack detection DAPM pins */ | |
77 | static struct snd_soc_jack_pin hs_jack_pins[] = { | |
78 | { | |
79 | .pin = "Mic Jack", | |
80 | .mask = SND_JACK_MICROPHONE, | |
81 | }, | |
82 | { | |
83 | .pin = "Headphone Jack", | |
84 | .mask = SND_JACK_HEADPHONE, | |
85 | }, | |
5f3822c4 VK |
86 | { |
87 | .pin = "Ext Spk", | |
88 | .mask = SND_JACK_HEADPHONE, | |
89 | .invert = 1 | |
90 | }, | |
d21e0f4c MV |
91 | }; |
92 | ||
93 | /* Headset jack detection gpios */ | |
94 | static struct snd_soc_jack_gpio hs_jack_gpios[] = { | |
95 | { | |
96 | .gpio = GPIO37_ZIPITZ2_HEADSET_DETECT, | |
97 | .name = "hsdet-gpio", | |
98 | .report = SND_JACK_HEADSET, | |
99 | .debounce_time = 200, | |
7cbf7004 | 100 | .invert = 1, |
d21e0f4c MV |
101 | }, |
102 | }; | |
103 | ||
104 | /* z2 machine dapm widgets */ | |
105 | static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = { | |
106 | SND_SOC_DAPM_HP("Headphone Jack", NULL), | |
107 | SND_SOC_DAPM_MIC("Mic Jack", NULL), | |
108 | SND_SOC_DAPM_SPK("Ext Spk", NULL), | |
109 | ||
110 | /* headset is a mic and mono headphone */ | |
111 | SND_SOC_DAPM_HP("Headset Jack", NULL), | |
112 | }; | |
113 | ||
114 | /* Z2 machine audio_map */ | |
3c3f51f6 | 115 | static const struct snd_soc_dapm_route z2_audio_map[] = { |
d21e0f4c MV |
116 | |
117 | /* headphone connected to LOUT1, ROUT1 */ | |
118 | {"Headphone Jack", NULL, "LOUT1"}, | |
119 | {"Headphone Jack", NULL, "ROUT1"}, | |
120 | ||
121 | /* ext speaker connected to LOUT2, ROUT2 */ | |
122 | {"Ext Spk", NULL , "ROUT2"}, | |
123 | {"Ext Spk", NULL , "LOUT2"}, | |
124 | ||
125 | /* mic is connected to R input 2 - with bias */ | |
126 | {"RINPUT2", NULL, "Mic Bias"}, | |
127 | {"Mic Bias", NULL, "Mic Jack"}, | |
128 | }; | |
129 | ||
130 | /* | |
131 | * Logic for a wm8750 as connected on a Z2 Device | |
132 | */ | |
f0fba2ad | 133 | static int z2_wm8750_init(struct snd_soc_pcm_runtime *rtd) |
d21e0f4c MV |
134 | { |
135 | int ret; | |
136 | ||
d21e0f4c | 137 | /* Jack detection API stuff */ |
d30d141f LPC |
138 | ret = snd_soc_card_jack_new(rtd->card, "Headset Jack", SND_JACK_HEADSET, |
139 | &hs_jack, hs_jack_pins, | |
140 | ARRAY_SIZE(hs_jack_pins)); | |
d21e0f4c MV |
141 | if (ret) |
142 | goto err; | |
143 | ||
144 | ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios), | |
145 | hs_jack_gpios); | |
146 | if (ret) | |
147 | goto err; | |
148 | ||
149 | return 0; | |
150 | ||
151 | err: | |
152 | return ret; | |
153 | } | |
154 | ||
155 | static struct snd_soc_ops z2_ops = { | |
156 | .hw_params = z2_hw_params, | |
157 | }; | |
158 | ||
159 | /* z2 digital audio interface glue - connects codec <--> CPU */ | |
160 | static struct snd_soc_dai_link z2_dai = { | |
161 | .name = "wm8750", | |
162 | .stream_name = "WM8750", | |
a2a0086d | 163 | .cpu_dai_name = "pxa2xx-i2s", |
f0fba2ad LG |
164 | .codec_dai_name = "wm8750-hifi", |
165 | .platform_name = "pxa-pcm-audio", | |
dc5de62b | 166 | .codec_name = "wm8750.0-001b", |
d21e0f4c | 167 | .init = z2_wm8750_init, |
36c1b400 AL |
168 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
169 | SND_SOC_DAIFMT_CBS_CFS, | |
d21e0f4c MV |
170 | .ops = &z2_ops, |
171 | }; | |
172 | ||
173 | /* z2 audio machine driver */ | |
174 | static struct snd_soc_card snd_soc_z2 = { | |
175 | .name = "Z2", | |
561c6a17 | 176 | .owner = THIS_MODULE, |
d21e0f4c MV |
177 | .dai_link = &z2_dai, |
178 | .num_links = 1, | |
3c3f51f6 AL |
179 | |
180 | .dapm_widgets = wm8750_dapm_widgets, | |
181 | .num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets), | |
182 | .dapm_routes = z2_audio_map, | |
183 | .num_dapm_routes = ARRAY_SIZE(z2_audio_map), | |
92ac4c50 | 184 | .fully_routed = true, |
d21e0f4c MV |
185 | }; |
186 | ||
d21e0f4c MV |
187 | static struct platform_device *z2_snd_device; |
188 | ||
189 | static int __init z2_init(void) | |
190 | { | |
191 | int ret; | |
192 | ||
193 | if (!machine_is_zipit2()) | |
194 | return -ENODEV; | |
195 | ||
196 | z2_snd_device = platform_device_alloc("soc-audio", -1); | |
197 | if (!z2_snd_device) | |
198 | return -ENOMEM; | |
199 | ||
f0fba2ad | 200 | platform_set_drvdata(z2_snd_device, &snd_soc_z2); |
d21e0f4c MV |
201 | ret = platform_device_add(z2_snd_device); |
202 | ||
203 | if (ret) | |
204 | platform_device_put(z2_snd_device); | |
205 | ||
206 | return ret; | |
207 | } | |
208 | ||
209 | static void __exit z2_exit(void) | |
210 | { | |
211 | platform_device_unregister(z2_snd_device); | |
212 | } | |
213 | ||
214 | module_init(z2_init); | |
215 | module_exit(z2_exit); | |
216 | ||
217 | MODULE_AUTHOR("Ken McGuire <kenm@desertweyr.com>, " | |
218 | "Marek Vasut <marek.vasut@gmail.com>"); | |
219 | MODULE_DESCRIPTION("ALSA SoC ZipitZ2"); | |
220 | MODULE_LICENSE("GPL"); |