1/* 2 * zoom2.c -- SoC audio for Zoom2 3 * 4 * Author: Misael Lopez Cruz <x0052729@ti.com> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * version 2 as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, but 11 * WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 18 * 02110-1301 USA 19 * 20 */ 21 22#include <linux/clk.h> 23#include <linux/platform_device.h> 24#include <sound/core.h> 25#include <sound/pcm.h> 26#include <sound/soc.h> 27 28#include <asm/mach-types.h> 29#include <mach/hardware.h> 30#include <mach/gpio.h> 31#include <mach/board-zoom.h> 32#include <plat/mcbsp.h> 33 34/* Register descriptions for twl4030 codec part */ 35#include <linux/mfd/twl4030-codec.h> 36 37#include "omap-mcbsp.h" 38#include "omap-pcm.h" 39 40#define ZOOM2_HEADSET_MUX_GPIO (OMAP_MAX_GPIO_LINES + 15) 41 42static int zoom2_hw_params(struct snd_pcm_substream *substream, 43 struct snd_pcm_hw_params *params) 44{ 45 struct snd_soc_pcm_runtime *rtd = substream->private_data; 46 struct snd_soc_dai *codec_dai = rtd->codec_dai; 47 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 48 int ret; 49 50 /* Set codec DAI configuration */ 51 ret = snd_soc_dai_set_fmt(codec_dai, 52 SND_SOC_DAIFMT_I2S | 53 SND_SOC_DAIFMT_NB_NF | 54 SND_SOC_DAIFMT_CBM_CFM); 55 if (ret < 0) { 56 printk(KERN_ERR "can't set codec DAI configuration\n"); 57 return ret; 58 } 59 60 /* Set cpu DAI configuration */ 61 ret = snd_soc_dai_set_fmt(cpu_dai, 62 SND_SOC_DAIFMT_I2S | 63 SND_SOC_DAIFMT_NB_NF | 64 SND_SOC_DAIFMT_CBM_CFM); 65 if (ret < 0) { 66 printk(KERN_ERR "can't set cpu DAI configuration\n"); 67 return ret; 68 } 69 70 /* Set the codec system clock for DAC and ADC */ 71 ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000, 72 SND_SOC_CLOCK_IN); 73 if (ret < 0) { 74 printk(KERN_ERR "can't set codec system clock\n"); 75 return ret; 76 } 77 78 return 0; 79} 80 81static struct snd_soc_ops zoom2_ops = { 82 .hw_params = zoom2_hw_params, 83}; 84 85static int zoom2_hw_voice_params(struct snd_pcm_substream *substream, 86 struct snd_pcm_hw_params *params) 87{ 88 struct snd_soc_pcm_runtime *rtd = substream->private_data; 89 struct snd_soc_dai *codec_dai = rtd->codec_dai; 90 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 91 int ret; 92 93 /* Set codec DAI configuration */ 94 ret = snd_soc_dai_set_fmt(codec_dai, 95 SND_SOC_DAIFMT_DSP_A | 96 SND_SOC_DAIFMT_IB_NF | 97 SND_SOC_DAIFMT_CBM_CFM); 98 if (ret) { 99 printk(KERN_ERR "can't set codec DAI configuration\n"); 100 return ret; 101 } 102 103 /* Set cpu DAI configuration */ 104 ret = snd_soc_dai_set_fmt(cpu_dai, 105 SND_SOC_DAIFMT_DSP_A | 106 SND_SOC_DAIFMT_IB_NF | 107 SND_SOC_DAIFMT_CBM_CFM); 108 if (ret < 0) { 109 printk(KERN_ERR "can't set cpu DAI configuration\n"); 110 return ret; 111 } 112 113 /* Set the codec system clock for DAC and ADC */ 114 ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000, 115 SND_SOC_CLOCK_IN); 116 if (ret < 0) { 117 printk(KERN_ERR "can't set codec system clock\n"); 118 return ret; 119 } 120 121 return 0; 122} 123 124static struct snd_soc_ops zoom2_voice_ops = { 125 .hw_params = zoom2_hw_voice_params, 126}; 127 128/* Zoom2 machine DAPM */ 129static const struct snd_soc_dapm_widget zoom2_twl4030_dapm_widgets[] = { 130 SND_SOC_DAPM_MIC("Ext Mic", NULL), 131 SND_SOC_DAPM_SPK("Ext Spk", NULL), 132 SND_SOC_DAPM_MIC("Headset Mic", NULL), 133 SND_SOC_DAPM_HP("Headset Stereophone", NULL), 134 SND_SOC_DAPM_LINE("Aux In", NULL), 135}; 136 137static const struct snd_soc_dapm_route audio_map[] = { 138 /* External Mics: MAINMIC, SUBMIC with bias*/ 139 {"MAINMIC", NULL, "Mic Bias 1"}, 140 {"SUBMIC", NULL, "Mic Bias 2"}, 141 {"Mic Bias 1", NULL, "Ext Mic"}, 142 {"Mic Bias 2", NULL, "Ext Mic"}, 143 144 /* External Speakers: HFL, HFR */ 145 {"Ext Spk", NULL, "HFL"}, 146 {"Ext Spk", NULL, "HFR"}, 147 148 /* Headset Stereophone: HSOL, HSOR */ 149 {"Headset Stereophone", NULL, "HSOL"}, 150 {"Headset Stereophone", NULL, "HSOR"}, 151 152 /* Headset Mic: HSMIC with bias */ 153 {"HSMIC", NULL, "Headset Mic Bias"}, 154 {"Headset Mic Bias", NULL, "Headset Mic"}, 155 156 /* Aux In: AUXL, AUXR */ 157 {"Aux In", NULL, "AUXL"}, 158 {"Aux In", NULL, "AUXR"}, 159}; 160 161static int zoom2_twl4030_init(struct snd_soc_pcm_runtime *rtd) 162{ 163 struct snd_soc_codec *codec = rtd->codec; 164 struct snd_soc_dapm_context *dapm = &codec->dapm; 165 int ret; 166 167 /* Add Zoom2 specific widgets */ 168 ret = snd_soc_dapm_new_controls(dapm, zoom2_twl4030_dapm_widgets, 169 ARRAY_SIZE(zoom2_twl4030_dapm_widgets)); 170 if (ret) 171 return ret; 172 173 /* Set up Zoom2 specific audio path audio_map */ 174 snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map)); 175 176 /* Zoom2 connected pins */ 177 snd_soc_dapm_enable_pin(dapm, "Ext Mic"); 178 snd_soc_dapm_enable_pin(dapm, "Ext Spk"); 179 snd_soc_dapm_enable_pin(dapm, "Headset Mic"); 180 snd_soc_dapm_enable_pin(dapm, "Headset Stereophone"); 181 snd_soc_dapm_enable_pin(dapm, "Aux In"); 182 183 /* TWL4030 not connected pins */ 184 snd_soc_dapm_nc_pin(dapm, "CARKITMIC"); 185 snd_soc_dapm_nc_pin(dapm, "DIGIMIC0"); 186 snd_soc_dapm_nc_pin(dapm, "DIGIMIC1"); 187 snd_soc_dapm_nc_pin(dapm, "EARPIECE"); 188 snd_soc_dapm_nc_pin(dapm, "PREDRIVEL"); 189 snd_soc_dapm_nc_pin(dapm, "PREDRIVER"); 190 snd_soc_dapm_nc_pin(dapm, "CARKITL"); 191 snd_soc_dapm_nc_pin(dapm, "CARKITR"); 192 193 ret = snd_soc_dapm_sync(dapm); 194 195 return ret; 196} 197 198static int zoom2_twl4030_voice_init(struct snd_soc_pcm_runtime *rtd) 199{ 200 struct snd_soc_codec *codec = rtd->codec; 201 unsigned short reg; 202 203 /* Enable voice interface */ 204 reg = codec->driver->read(codec, TWL4030_REG_VOICE_IF); 205 reg |= TWL4030_VIF_DIN_EN | TWL4030_VIF_DOUT_EN | TWL4030_VIF_EN; 206 codec->driver->write(codec, TWL4030_REG_VOICE_IF, reg); 207 208 return 0; 209} 210 211/* Digital audio interface glue - connects codec <--> CPU */ 212static struct snd_soc_dai_link zoom2_dai[] = { 213 { 214 .name = "TWL4030 I2S", 215 .stream_name = "TWL4030 Audio", 216 .cpu_dai_name = "omap-mcbsp-dai.1", 217 .codec_dai_name = "twl4030-hifi", 218 .platform_name = "omap-pcm-audio", 219 .codec_name = "twl4030-codec", 220 .init = zoom2_twl4030_init, 221 .ops = &zoom2_ops, 222 }, 223 { 224 .name = "TWL4030 PCM", 225 .stream_name = "TWL4030 Voice", 226 .cpu_dai_name = "omap-mcbsp-dai.2", 227 .codec_dai_name = "twl4030-voice", 228 .platform_name = "omap-pcm-audio", 229 .codec_name = "twl4030-codec", 230 .init = zoom2_twl4030_voice_init, 231 .ops = &zoom2_voice_ops, 232 }, 233}; 234 235/* Audio machine driver */ 236static struct snd_soc_card snd_soc_zoom2 = { 237 .name = "Zoom2", 238 .dai_link = zoom2_dai, 239 .num_links = ARRAY_SIZE(zoom2_dai), 240}; 241 242static struct platform_device *zoom2_snd_device; 243 244static int __init zoom2_soc_init(void) 245{ 246 int ret; 247 248 if (!machine_is_omap_zoom2()) 249 return -ENODEV; 250 printk(KERN_INFO "Zoom2 SoC init\n"); 251 252 zoom2_snd_device = platform_device_alloc("soc-audio", -1); 253 if (!zoom2_snd_device) { 254 printk(KERN_ERR "Platform device allocation failed\n"); 255 return -ENOMEM; 256 } 257 258 platform_set_drvdata(zoom2_snd_device, &snd_soc_zoom2); 259 ret = platform_device_add(zoom2_snd_device); 260 if (ret) 261 goto err1; 262 263 BUG_ON(gpio_request(ZOOM2_HEADSET_MUX_GPIO, "hs_mux") < 0); 264 gpio_direction_output(ZOOM2_HEADSET_MUX_GPIO, 0); 265 266 BUG_ON(gpio_request(ZOOM2_HEADSET_EXTMUTE_GPIO, "ext_mute") < 0); 267 gpio_direction_output(ZOOM2_HEADSET_EXTMUTE_GPIO, 0); 268 269 return 0; 270 271err1: 272 printk(KERN_ERR "Unable to add platform device\n"); 273 platform_device_put(zoom2_snd_device); 274 275 return ret; 276} 277module_init(zoom2_soc_init); 278 279static void __exit zoom2_soc_exit(void) 280{ 281 gpio_free(ZOOM2_HEADSET_MUX_GPIO); 282 gpio_free(ZOOM2_HEADSET_EXTMUTE_GPIO); 283 284 platform_device_unregister(zoom2_snd_device); 285} 286module_exit(zoom2_soc_exit); 287 288MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>"); 289MODULE_DESCRIPTION("ALSA SoC Zoom2"); 290MODULE_LICENSE("GPL"); 291 292