| 1 | /* |
| 2 | * Copyright (C) 2009, Yauhen Kharuzhy <jekhor@gmail.com> |
| 3 | * OpenInkpot project |
| 4 | * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | * |
| 10 | * You should have received a copy of the GNU General Public License along |
| 11 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 12 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 13 | * |
| 14 | */ |
| 15 | |
| 16 | #include <linux/module.h> |
| 17 | #include <linux/interrupt.h> |
| 18 | #include <linux/platform_device.h> |
| 19 | #include <sound/core.h> |
| 20 | #include <sound/pcm.h> |
| 21 | #include <sound/soc.h> |
| 22 | #include <sound/soc-dapm.h> |
| 23 | #include <sound/jack.h> |
| 24 | #include <linux/gpio.h> |
| 25 | #include <linux/workqueue.h> |
| 26 | |
| 27 | #include "../codecs/jzcodec.h" |
| 28 | #include "jz4740-pcm.h" |
| 29 | #include "jz4740-i2s.h" |
| 30 | |
| 31 | #include <asm/mach-jz4740/board-n516.h> |
| 32 | |
| 33 | enum { |
| 34 | N516_SPEAKER_AUTO = 0, |
| 35 | N516_SPEAKER_OFF = 1, |
| 36 | N516_SPEAKER_ON = 2, |
| 37 | }; |
| 38 | |
| 39 | static int n516_speaker_mode; |
| 40 | static struct snd_soc_codec *n516_codec; |
| 41 | static struct work_struct n516_headphone_work; |
| 42 | |
| 43 | static void n516_ext_control(void) |
| 44 | { |
| 45 | if (!n516_codec) |
| 46 | return; |
| 47 | |
| 48 | switch (n516_speaker_mode) { |
| 49 | case N516_SPEAKER_ON: |
| 50 | snd_soc_dapm_enable_pin(n516_codec, "Speaker"); |
| 51 | break; |
| 52 | case N516_SPEAKER_OFF: |
| 53 | snd_soc_dapm_disable_pin(n516_codec, "Speaker"); |
| 54 | break; |
| 55 | case N516_SPEAKER_AUTO: |
| 56 | if (snd_soc_dapm_get_pin_status(n516_codec, "Headphone")) |
| 57 | snd_soc_dapm_disable_pin(n516_codec, "Speaker"); |
| 58 | else |
| 59 | snd_soc_dapm_enable_pin(n516_codec, "Speaker"); |
| 60 | break; |
| 61 | default: |
| 62 | break; |
| 63 | } |
| 64 | |
| 65 | /* signal a DAPM event */ |
| 66 | snd_soc_dapm_sync(n516_codec); |
| 67 | } |
| 68 | |
| 69 | static int n516_speaker_event(struct snd_soc_dapm_widget *widget, |
| 70 | struct snd_kcontrol *ctrl, int event) |
| 71 | { |
| 72 | int on = !SND_SOC_DAPM_EVENT_OFF(event); |
| 73 | |
| 74 | gpio_set_value(GPIO_SPEAKER_ENABLE, on); |
| 75 | |
| 76 | return 0; |
| 77 | } |
| 78 | |
| 79 | static void n516_headphone_event_work(struct work_struct *work) |
| 80 | { |
| 81 | n516_ext_control(); |
| 82 | } |
| 83 | |
| 84 | static int n516_headphone_event(struct snd_soc_dapm_widget *widget, |
| 85 | struct snd_kcontrol *ctrl, int event) |
| 86 | { |
| 87 | /* We can't call soc_dapm_sync from a event handler */ |
| 88 | if (event & (SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD)) |
| 89 | schedule_work(&n516_headphone_work); |
| 90 | return 0; |
| 91 | } |
| 92 | |
| 93 | static const struct snd_soc_dapm_widget n516_widgets[] = { |
| 94 | SND_SOC_DAPM_SPK("Speaker", n516_speaker_event), |
| 95 | SND_SOC_DAPM_HP("Headphone", n516_headphone_event), |
| 96 | SND_SOC_DAPM_MIC("Mic", NULL), |
| 97 | }; |
| 98 | |
| 99 | static const struct snd_soc_dapm_route n516_routes[] = { |
| 100 | {"Mic", NULL, "MIC"}, |
| 101 | {"Speaker", NULL, "LOUT"}, |
| 102 | {"Speaker", NULL, "ROUT"}, |
| 103 | {"Headphone", NULL, "LOUT"}, |
| 104 | {"Headphone", NULL, "ROUT"}, |
| 105 | }; |
| 106 | |
| 107 | static const char *n516_speaker_modes[] = {"Auto", "Off", "On"}; |
| 108 | static const struct soc_enum n516_speaker_mode_enum = |
| 109 | SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(n516_speaker_modes), n516_speaker_modes); |
| 110 | |
| 111 | static int n516_get_speaker_mode(struct snd_kcontrol *kcontrol, |
| 112 | struct snd_ctl_elem_value *ucontrol) |
| 113 | { |
| 114 | ucontrol->value.integer.value[0] = n516_speaker_mode; |
| 115 | return 0; |
| 116 | } |
| 117 | |
| 118 | static int n516_set_speaker_mode(struct snd_kcontrol *kcontrol, |
| 119 | struct snd_ctl_elem_value *ucontrol) |
| 120 | { |
| 121 | if (n516_speaker_mode == ucontrol->value.integer.value[0]) |
| 122 | return 0; |
| 123 | |
| 124 | n516_speaker_mode = ucontrol->value.integer.value[0]; |
| 125 | n516_ext_control(); |
| 126 | return 1; |
| 127 | } |
| 128 | |
| 129 | static const struct snd_kcontrol_new n516_controls[] = { |
| 130 | SOC_ENUM_EXT("Speaker Function", n516_speaker_mode_enum, |
| 131 | n516_get_speaker_mode, n516_set_speaker_mode), |
| 132 | }; |
| 133 | |
| 134 | #define N516_DAIFMT (SND_SOC_DAIFMT_I2S | \ |
| 135 | SND_SOC_DAIFMT_NB_NF | \ |
| 136 | SND_SOC_DAIFMT_CBM_CFM) |
| 137 | |
| 138 | static int n516_codec_init(struct snd_soc_codec *codec) |
| 139 | { |
| 140 | int ret; |
| 141 | struct snd_soc_dai *cpu_dai = codec->socdev->card->dai_link->cpu_dai; |
| 142 | struct snd_soc_dai *codec_dai = codec->socdev->card->dai_link->codec_dai; |
| 143 | |
| 144 | n516_codec = codec; |
| 145 | |
| 146 | snd_soc_dapm_nc_pin(codec, "LIN"); |
| 147 | snd_soc_dapm_nc_pin(codec, "RIN"); |
| 148 | |
| 149 | ret = snd_soc_dai_set_fmt(codec_dai, N516_DAIFMT); |
| 150 | if (ret < 0) { |
| 151 | dev_err(codec->dev, "Failed to set codec dai format: %d\n", ret); |
| 152 | return ret; |
| 153 | } |
| 154 | |
| 155 | ret = snd_soc_dai_set_fmt(cpu_dai, N516_DAIFMT); |
| 156 | if (ret < 0) { |
| 157 | dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret); |
| 158 | return ret; |
| 159 | } |
| 160 | |
| 161 | ret = snd_soc_dai_set_sysclk(codec_dai, JZCODEC_SYSCLK, 111, |
| 162 | SND_SOC_CLOCK_IN); |
| 163 | if (ret < 0) { |
| 164 | dev_err(codec->dev, "Failed to set codec dai sysclk: %d\n", ret); |
| 165 | return ret; |
| 166 | } |
| 167 | |
| 168 | ret = snd_soc_add_controls(codec, n516_controls, |
| 169 | ARRAY_SIZE(n516_controls)); |
| 170 | if (ret) { |
| 171 | dev_err(codec->dev, "Failed to add controls: %d\n", ret); |
| 172 | return ret; |
| 173 | } |
| 174 | |
| 175 | |
| 176 | ret = snd_soc_dapm_new_controls(codec, n516_widgets, |
| 177 | ARRAY_SIZE(n516_widgets)); |
| 178 | if (ret) { |
| 179 | dev_err(codec->dev, "Failed to add dapm controls: %d\n", ret); |
| 180 | return ret; |
| 181 | } |
| 182 | |
| 183 | ret = snd_soc_dapm_add_routes(codec, n516_routes, ARRAY_SIZE(n516_routes)); |
| 184 | if (ret) { |
| 185 | dev_err(codec->dev, "Failed to add dapm routes: %d\n", ret); |
| 186 | return ret; |
| 187 | } |
| 188 | |
| 189 | snd_soc_dapm_sync(codec); |
| 190 | |
| 191 | return 0; |
| 192 | } |
| 193 | |
| 194 | static struct snd_soc_dai_link n516_dai = { |
| 195 | .name = "jz-codec", |
| 196 | .stream_name = "JZCODEC", |
| 197 | .cpu_dai = &jz4740_i2s_dai, |
| 198 | .codec_dai = &jz_codec_dai, |
| 199 | .init = n516_codec_init, |
| 200 | }; |
| 201 | |
| 202 | static struct snd_soc_card n516_card = { |
| 203 | .name = "N516", |
| 204 | .dai_link = &n516_dai, |
| 205 | .num_links = 1, |
| 206 | .platform = &jz4740_soc_platform, |
| 207 | }; |
| 208 | |
| 209 | static struct snd_soc_device n516_snd_devdata = { |
| 210 | .card = &n516_card, |
| 211 | .codec_dev = &soc_codec_dev_jzcodec, |
| 212 | }; |
| 213 | |
| 214 | static struct platform_device *n516_snd_device; |
| 215 | |
| 216 | static struct snd_soc_jack n516_hp_jack; |
| 217 | |
| 218 | static struct snd_soc_jack_pin n516_hp_pin = { |
| 219 | .pin = "Headphone", |
| 220 | .mask = SND_JACK_HEADPHONE, |
| 221 | }; |
| 222 | |
| 223 | static struct snd_soc_jack_gpio n516_hp_gpio = { |
| 224 | .gpio = GPIO_HPHONE_DETECT, |
| 225 | .name = "Headphone detect", |
| 226 | .report = SND_JACK_HEADPHONE, |
| 227 | .debounce_time = 100, |
| 228 | }; |
| 229 | |
| 230 | static int __init n516_add_headphone_jack(void) |
| 231 | { |
| 232 | int ret; |
| 233 | |
| 234 | ret = snd_soc_jack_new(&n516_card, "Headphone jack", |
| 235 | SND_JACK_HEADPHONE, &n516_hp_jack); |
| 236 | if (ret) |
| 237 | return ret; |
| 238 | |
| 239 | ret = snd_soc_jack_add_pins(&n516_hp_jack, 1, &n516_hp_pin); |
| 240 | if (ret) |
| 241 | return ret; |
| 242 | |
| 243 | ret = snd_soc_jack_add_gpios(&n516_hp_jack, 1, &n516_hp_gpio); |
| 244 | |
| 245 | return ret; |
| 246 | } |
| 247 | |
| 248 | static int __init n516_init(void) |
| 249 | { |
| 250 | int ret; |
| 251 | |
| 252 | n516_snd_device = platform_device_alloc("soc-audio", -1); |
| 253 | |
| 254 | if (!n516_snd_device) |
| 255 | return -ENOMEM; |
| 256 | |
| 257 | ret = gpio_request(GPIO_SPEAKER_ENABLE, "Speaker enable"); |
| 258 | if (ret) { |
| 259 | pr_err("n516 snd: Failed to request SPEAKER_ENABLE GPIO(%d): %d\n", |
| 260 | GPIO_SPEAKER_ENABLE, ret); |
| 261 | goto err_device_put; |
| 262 | } |
| 263 | |
| 264 | gpio_direction_output(GPIO_SPEAKER_ENABLE, 0); |
| 265 | INIT_WORK(&n516_headphone_work, n516_headphone_event_work); |
| 266 | |
| 267 | platform_set_drvdata(n516_snd_device, &n516_snd_devdata); |
| 268 | n516_snd_devdata.dev = &n516_snd_device->dev; |
| 269 | ret = platform_device_add(n516_snd_device); |
| 270 | if (ret) { |
| 271 | pr_err("n516 snd: Failed to add snd soc device: %d\n", ret); |
| 272 | goto err_unset_pdata; |
| 273 | } |
| 274 | |
| 275 | ret = n516_add_headphone_jack(); |
| 276 | /* We can live without it, so just print a warning */ |
| 277 | if (ret) |
| 278 | pr_warning("n516 snd: Failed to initalise headphone jack: %d\n", ret); |
| 279 | |
| 280 | return 0; |
| 281 | |
| 282 | err_unset_pdata: |
| 283 | platform_set_drvdata(n516_snd_device, NULL); |
| 284 | /*err_gpio_free_speaker:*/ |
| 285 | gpio_free(GPIO_SPEAKER_ENABLE); |
| 286 | err_device_put: |
| 287 | platform_device_put(n516_snd_device); |
| 288 | |
| 289 | return ret; |
| 290 | } |
| 291 | module_init(n516_init); |
| 292 | |
| 293 | static void __exit n516_exit(void) |
| 294 | { |
| 295 | snd_soc_jack_free_gpios(&n516_hp_jack, 1, &n516_hp_gpio); |
| 296 | gpio_free(GPIO_SPEAKER_ENABLE); |
| 297 | platform_device_unregister(n516_snd_device); |
| 298 | } |
| 299 | module_exit(n516_exit); |
| 300 | |
| 301 | MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); |
| 302 | MODULE_DESCRIPTION("ALSA SoC N516 Audio support"); |
| 303 | MODULE_LICENSE("GPL v2"); |
| 304 | |
