sound/soc/omap/n810.c

   1 /*
   2  * n810.c  --  SoC audio for Nokia N810
   3  *
   4  * Copyright (C) 2008 Nokia Corporation
   5  *
   6  * Contact: Jarkko Nikula <jarkko.nikula@nokia.com>
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  *
  22  */
  23
  24 #include <linux/clk.h>
  25 #include <linux/platform_device.h>
  26 #include <sound/core.h>
  27 #include <sound/pcm.h>
  28 #include <sound/soc.h>
  29 #include <sound/soc-dapm.h>
  30
  31 #include <asm/mach-types.h>
  32 #include <asm/arch/hardware.h>
  33 #include <asm/arch/gpio.h>
  34 #include <asm/arch/mcbsp.h>
  35
  36 #include "omap-mcbsp.h"
  37 #include "omap-pcm.h"
  38 #include "../codecs/tlv320aic3x.h"
  39
  40 #define RX44_HEADSET_AMP_GPIO   10
  41 #define RX44_SPEAKER_AMP_GPIO   101
  42
  43 static struct clk *sys_clkout2;
  44 static struct clk *sys_clkout2_src;
  45 static struct clk *func96m_clk;
  46
  47 static int n810_spk_func;
  48 static int n810_jack_func;
  49
  50 static void n810_ext_control(struct snd_soc_codec *codec)
  51 {
  52         snd_soc_dapm_set_endpoint(codec, "Ext Spk", n810_spk_func);
  53         snd_soc_dapm_set_endpoint(codec, "Headphone Jack", n810_jack_func);
  54
  55         snd_soc_dapm_sync_endpoints(codec);
  56 }
  57
  58 static int n810_startup(struct snd_pcm_substream *substream)
  59 {
  60         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  61         struct snd_soc_codec *codec = rtd->socdev->codec;
  62
  63         n810_ext_control(codec);
  64         return clk_enable(sys_clkout2);
  65 }
  66
  67 static void n810_shutdown(struct snd_pcm_substream *substream)
  68 {
  69         clk_disable(sys_clkout2);
  70 }
  71
  72 static int n810_hw_params(struct snd_pcm_substream *substream,
  73         struct snd_pcm_hw_params *params)
  74 {
  75         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  76         struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
  77         struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
  78         int err;
  79
  80         /* Set codec DAI configuration */
  81         err = codec_dai->dai_ops.set_fmt(codec_dai,
  82                                          SND_SOC_DAIFMT_I2S |
  83                                          SND_SOC_DAIFMT_NB_NF |
  84                                          SND_SOC_DAIFMT_CBM_CFM);
  85         if (err < 0)
  86                 return err;
  87
  88         /* Set cpu DAI configuration */
  89         err = cpu_dai->dai_ops.set_fmt(cpu_dai,
  90                                        SND_SOC_DAIFMT_I2S |
  91                                        SND_SOC_DAIFMT_NB_NF |
  92                                        SND_SOC_DAIFMT_CBM_CFM);
  93         if (err < 0)
  94                 return err;
  95
  96         /* Set the codec system clock for DAC and ADC */
  97         err = codec_dai->dai_ops.set_sysclk(codec_dai, 0, 12000000,
  98                                             SND_SOC_CLOCK_IN);
  99
 100         return err;
 101 }
 102
 103 static struct snd_soc_ops n810_ops = {
 104         .startup = n810_startup,
 105         .hw_params = n810_hw_params,
 106         .shutdown = n810_shutdown,
 107 };
 108
 109 static int n810_get_spk(struct snd_kcontrol *kcontrol,
 110                         struct snd_ctl_elem_value *ucontrol)
 111 {
 112         ucontrol->value.integer.value[0] = n810_spk_func;
 113
 114         return 0;
 115 }
 116
 117 static int n810_set_spk(struct snd_kcontrol *kcontrol,
 118                         struct snd_ctl_elem_value *ucontrol)
 119 {
 120         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 121
 122         if (n810_spk_func == ucontrol->value.integer.value[0])
 123                 return 0;
 124
 125         n810_spk_func = ucontrol->value.integer.value[0];
 126         n810_ext_control(codec);
 127
 128         return 1;
 129 }
 130
 131 static int n810_get_jack(struct snd_kcontrol *kcontrol,
 132                          struct snd_ctl_elem_value *ucontrol)
 133 {
 134         ucontrol->value.integer.value[0] = n810_jack_func;
 135
 136         return 0;
 137 }
 138
 139 static int n810_set_jack(struct snd_kcontrol *kcontrol,
 140                          struct snd_ctl_elem_value *ucontrol)
 141 {
 142         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 143
 144         if (n810_jack_func == ucontrol->value.integer.value[0])
 145                 return 0;
 146
 147         n810_jack_func = ucontrol->value.integer.value[0];
 148         n810_ext_control(codec);
 149
 150         return 1;
 151 }
 152
 153 static int n810_spk_event(struct snd_soc_dapm_widget *w,
 154                           struct snd_kcontrol *k, int event)
 155 {
 156         if (SND_SOC_DAPM_EVENT_ON(event))
 157                 omap_set_gpio_dataout(RX44_SPEAKER_AMP_GPIO, 1);
 158         else
 159                 omap_set_gpio_dataout(RX44_SPEAKER_AMP_GPIO, 0);
 160
 161         return 0;
 162 }
 163
 164 static int n810_jack_event(struct snd_soc_dapm_widget *w,
 165                            struct snd_kcontrol *k, int event)
 166 {
 167         if (SND_SOC_DAPM_EVENT_ON(event))
 168                 omap_set_gpio_dataout(RX44_HEADSET_AMP_GPIO, 1);
 169         else
 170                 omap_set_gpio_dataout(RX44_HEADSET_AMP_GPIO, 0);
 171
 172         return 0;
 173 }
 174
 175 static const struct snd_soc_dapm_widget aic33_dapm_widgets[] = {
 176         SND_SOC_DAPM_SPK("Ext Spk", n810_spk_event),
 177         SND_SOC_DAPM_HP("Headphone Jack", n810_jack_event),
 178 };
 179
 180 static const char *audio_map[][3] = {
 181         {"Headphone Jack", NULL, "HPLOUT"},
 182         {"Headphone Jack", NULL, "HPROUT"},
 183
 184         {"Ext Spk", NULL, "LLOUT"},
 185         {"Ext Spk", NULL, "RLOUT"},
 186 };
 187
 188 static const char *spk_function[] = {"Off", "On"};
 189 static const char *jack_function[] = {"Off", "Headphone"};
 190 static const struct soc_enum n810_enum[] = {
 191         SOC_ENUM_SINGLE_EXT(2, spk_function),
 192         SOC_ENUM_SINGLE_EXT(3, jack_function),
 193 };
 194
 195 static const struct snd_kcontrol_new aic33_n810_controls[] = {
 196         SOC_ENUM_EXT("Speaker Function", n810_enum[0],
 197                      n810_get_spk, n810_set_spk),
 198         SOC_ENUM_EXT("Jack Function", n810_enum[1],
 199                      n810_get_jack, n810_set_jack),
 200 };
 201
 202 static int n810_aic33_init(struct snd_soc_codec *codec)
 203 {
 204         int i, err;
 205
 206         /* Not connected */
 207         snd_soc_dapm_set_endpoint(codec, "MONO_LOUT", 0);
 208         snd_soc_dapm_set_endpoint(codec, "HPLCOM", 0);
 209         snd_soc_dapm_set_endpoint(codec, "HPRCOM", 0);
 210
 211         /* Add N810 specific controls */
 212         for (i = 0; i < ARRAY_SIZE(aic33_n810_controls); i++) {
 213                 err = snd_ctl_add(codec->card,
 214                         snd_soc_cnew(&aic33_n810_controls[i], codec, NULL));
 215                 if (err < 0)
 216                         return err;
 217         }
 218
 219         /* Add N810 specific widgets */
 220         for (i = 0; i < ARRAY_SIZE(aic33_dapm_widgets); i++)
 221                 snd_soc_dapm_new_control(codec, &aic33_dapm_widgets[i]);
 222
 223         /* Set up N810 specific audio path audio_map */
 224         for (i = 0; i < ARRAY_SIZE(audio_map); i++)
 225                 snd_soc_dapm_connect_input(codec, audio_map[i][0],
 226                         audio_map[i][1], audio_map[i][2]);
 227
 228         snd_soc_dapm_sync_endpoints(codec);
 229
 230         return 0;
 231 }
 232
 233 /* Digital audio interface glue - connects codec <--> CPU */
 234 static struct snd_soc_dai_link n810_dai = {
 235         .name = "TLV320AIC33",
 236         .stream_name = "AIC33",
 237         .cpu_dai = &omap_mcbsp_dai[0],
 238         .codec_dai = &aic3x_dai,
 239         .init = n810_aic33_init,
 240         .ops = &n810_ops,
 241 };
 242
 243 /* Audio machine driver */
 244 static struct snd_soc_machine snd_soc_machine_n810 = {
 245         .name = "N810",
 246         .dai_link = &n810_dai,
 247         .num_links = 1,
 248 };
 249
 250 /* Audio private data */
 251 static struct aic3x_setup_data n810_aic33_setup = {
 252         .i2c_address = 0x18,
 253 };
 254
 255 /* Audio subsystem */
 256 static struct snd_soc_device n810_snd_devdata = {
 257         .machine = &snd_soc_machine_n810,
 258         .platform = &omap_soc_platform,
 259         .codec_dev = &soc_codec_dev_aic3x,
 260         .codec_data = &n810_aic33_setup,
 261 };
 262
 263 static struct platform_device *n810_snd_device;
 264
 265 static int __init n810_soc_init(void)
 266 {
 267         int err;
 268         struct device *dev;
 269
 270         if (!machine_is_nokia_n810())
 271                 return -ENODEV;
 272
 273         n810_snd_device = platform_device_alloc("soc-audio", -1);
 274         if (!n810_snd_device)
 275                 return -ENOMEM;
 276
 277         platform_set_drvdata(n810_snd_device, &n810_snd_devdata);
 278         n810_snd_devdata.dev = &n810_snd_device->dev;
 279         *(unsigned int *)n810_dai.cpu_dai->private_data = 1; /* McBSP2 */
 280         err = platform_device_add(n810_snd_device);
 281         if (err)
 282                 goto err1;
 283
 284         dev = &n810_snd_device->dev;
 285
 286         sys_clkout2_src = clk_get(dev, "sys_clkout2_src");
 287         if (IS_ERR(sys_clkout2_src)) {
 288                 dev_err(dev, "Could not get sys_clkout2_src clock\n");
 289                 return -ENODEV;
 290         }
 291         sys_clkout2 = clk_get(dev, "sys_clkout2");
 292         if (IS_ERR(sys_clkout2)) {
 293                 dev_err(dev, "Could not get sys_clkout2\n");
 294                 goto err1;
 295         }
 296         /*
 297          * Configure 12 MHz output on SYS_CLKOUT2. Therefore we must use
 298          * 96 MHz as its parent in order to get 12 MHz
 299          */
 300         func96m_clk = clk_get(dev, "func_96m_ck");
 301         if (IS_ERR(func96m_clk)) {
 302                 dev_err(dev, "Could not get func 96M clock\n");
 303                 goto err2;
 304         }
 305         clk_set_parent(sys_clkout2_src, func96m_clk);
 306         clk_set_rate(sys_clkout2, 12000000);
 307
 308         if (omap_request_gpio(RX44_HEADSET_AMP_GPIO) < 0)
 309                 BUG();
 310         if (omap_request_gpio(RX44_SPEAKER_AMP_GPIO) < 0)
 311                 BUG();
 312         omap_set_gpio_direction(RX44_HEADSET_AMP_GPIO, 0);
 313         omap_set_gpio_direction(RX44_SPEAKER_AMP_GPIO, 0);
 314
 315         return 0;
 316 err2:
 317         clk_put(sys_clkout2);
 318         platform_device_del(n810_snd_device);
 319 err1:
 320         platform_device_put(n810_snd_device);
 321
 322         return err;
 323
 324 }
 325
 326 static void __exit n810_soc_exit(void)
 327 {
 328         platform_device_unregister(n810_snd_device);
 329 }
 330
 331 module_init(n810_soc_init);
 332 module_exit(n810_soc_exit);
 333
 334 MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@nokia.com>");
 335 MODULE_DESCRIPTION("ALSA SoC Nokia N810");
 336 MODULE_LICENSE("GPL");