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