1/* 2 * omap3pandora.c -- SoC audio for Pandora Handheld Console 3 * 4 * Author: Gra��vydas Ignotas <notasas@gmail.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 <linux/gpio.h> 25#include <linux/delay.h> 26#include <linux/regulator/consumer.h> 27 28#include <sound/core.h> 29#include <sound/pcm.h> 30#include <sound/soc.h> 31#include <sound/soc-dapm.h> 32 33#include <asm/mach-types.h> 34 35#include "omap-mcbsp.h" 36#include "omap-pcm.h" 37#include "../codecs/twl4030.h" 38 39#define OMAP3_PANDORA_DAC_POWER_GPIO 118 40#define OMAP3_PANDORA_AMP_POWER_GPIO 14 41 42#define PREFIX "ASoC omap3pandora: " 43 44static struct regulator *omap3pandora_dac_reg; 45 46static int omap3pandora_hw_params(struct snd_pcm_substream *substream, 47 struct snd_pcm_hw_params *params) 48{ 49 struct snd_soc_pcm_runtime *rtd = substream->private_data; 50 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; 51 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; 52 int fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 53 SND_SOC_DAIFMT_CBS_CFS; 54 int ret; 55 56 /* Set codec DAI configuration */ 57 ret = snd_soc_dai_set_fmt(codec_dai, fmt); 58 if (ret < 0) { 59 pr_err(PREFIX "can't set codec DAI configuration\n"); 60 return ret; 61 } 62 63 /* Set cpu DAI configuration */ 64 ret = snd_soc_dai_set_fmt(cpu_dai, fmt); 65 if (ret < 0) { 66 pr_err(PREFIX "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 pr_err(PREFIX "can't set codec system clock\n"); 75 return ret; 76 } 77 78 /* Set McBSP clock to external */ 79 ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_SYSCLK_CLKS_EXT, 80 256 * params_rate(params), 81 SND_SOC_CLOCK_IN); 82 if (ret < 0) { 83 pr_err(PREFIX "can't set cpu system clock\n"); 84 return ret; 85 } 86 87 ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_MCBSP_CLKGDV, 8); 88 if (ret < 0) { 89 pr_err(PREFIX "can't set SRG clock divider\n"); 90 return ret; 91 } 92 93 return 0; 94} 95 96static int omap3pandora_dac_event(struct snd_soc_dapm_widget *w, 97 struct snd_kcontrol *k, int event) 98{ 99 /* 100 * The PCM1773 DAC datasheet requires 1ms delay between switching 101 * VCC power on/off and /PD pin high/low 102 */ 103 if (SND_SOC_DAPM_EVENT_ON(event)) { 104 regulator_enable(omap3pandora_dac_reg); 105 mdelay(1); 106 gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1); 107 } else { 108 gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 0); 109 mdelay(1); 110 regulator_disable(omap3pandora_dac_reg); 111 } 112 113 return 0; 114} 115 116static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w, 117 struct snd_kcontrol *k, int event) 118{ 119 if (SND_SOC_DAPM_EVENT_ON(event)) 120 gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 1); 121 else 122 gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 0); 123 124 return 0; 125} 126 127/* 128 * Audio paths on Pandora board: 129 * 130 * |O| ---> PCM DAC +-> AMP -> Headphone Jack 131 * |M| A +--------> Line Out 132 * |A| <~~clk~~+ 133 * |P| <--- TWL4030 <--------- Line In and MICs 134 */ 135static const struct snd_soc_dapm_widget omap3pandora_out_dapm_widgets[] = { 136 SND_SOC_DAPM_DAC_E("PCM DAC", "HiFi Playback", SND_SOC_NOPM, 137 0, 0, omap3pandora_dac_event, 138 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), 139 SND_SOC_DAPM_PGA_E("Headphone Amplifier", SND_SOC_NOPM, 140 0, 0, NULL, 0, omap3pandora_hp_event, 141 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), 142 SND_SOC_DAPM_HP("Headphone Jack", NULL), 143 SND_SOC_DAPM_LINE("Line Out", NULL), 144}; 145 146static const struct snd_soc_dapm_widget omap3pandora_in_dapm_widgets[] = { 147 SND_SOC_DAPM_MIC("Mic (internal)", NULL), 148 SND_SOC_DAPM_MIC("Mic (external)", NULL), 149 SND_SOC_DAPM_LINE("Line In", NULL), 150}; 151 152static const struct snd_soc_dapm_route omap3pandora_out_map[] = { 153 {"PCM DAC", NULL, "APLL Enable"}, 154 {"Headphone Amplifier", NULL, "PCM DAC"}, 155 {"Line Out", NULL, "PCM DAC"}, 156 {"Headphone Jack", NULL, "Headphone Amplifier"}, 157}; 158 159static const struct snd_soc_dapm_route omap3pandora_in_map[] = { 160 {"AUXL", NULL, "Line In"}, 161 {"AUXR", NULL, "Line In"}, 162 163 {"MAINMIC", NULL, "Mic Bias 1"}, 164 {"Mic Bias 1", NULL, "Mic (internal)"}, 165 166 {"SUBMIC", NULL, "Mic Bias 2"}, 167 {"Mic Bias 2", NULL, "Mic (external)"}, 168}; 169 170static int omap3pandora_out_init(struct snd_soc_codec *codec) 171{ 172 int ret; 173 174 /* All TWL4030 output pins are floating */ 175 snd_soc_dapm_nc_pin(codec, "EARPIECE"); 176 snd_soc_dapm_nc_pin(codec, "PREDRIVEL"); 177 snd_soc_dapm_nc_pin(codec, "PREDRIVER"); 178 snd_soc_dapm_nc_pin(codec, "HSOL"); 179 snd_soc_dapm_nc_pin(codec, "HSOR"); 180 snd_soc_dapm_nc_pin(codec, "CARKITL"); 181 snd_soc_dapm_nc_pin(codec, "CARKITR"); 182 snd_soc_dapm_nc_pin(codec, "HFL"); 183 snd_soc_dapm_nc_pin(codec, "HFR"); 184 snd_soc_dapm_nc_pin(codec, "VIBRA"); 185 186 ret = snd_soc_dapm_new_controls(codec, omap3pandora_out_dapm_widgets, 187 ARRAY_SIZE(omap3pandora_out_dapm_widgets)); 188 if (ret < 0) 189 return ret; 190 191 snd_soc_dapm_add_routes(codec, omap3pandora_out_map, 192 ARRAY_SIZE(omap3pandora_out_map)); 193 194 return snd_soc_dapm_sync(codec); 195} 196 197static int omap3pandora_in_init(struct snd_soc_codec *codec) 198{ 199 int ret; 200 201 /* Not comnnected */ 202 snd_soc_dapm_nc_pin(codec, "HSMIC"); 203 snd_soc_dapm_nc_pin(codec, "CARKITMIC"); 204 snd_soc_dapm_nc_pin(codec, "DIGIMIC0"); 205 snd_soc_dapm_nc_pin(codec, "DIGIMIC1"); 206 207 ret = snd_soc_dapm_new_controls(codec, omap3pandora_in_dapm_widgets, 208 ARRAY_SIZE(omap3pandora_in_dapm_widgets)); 209 if (ret < 0) 210 return ret; 211 212 snd_soc_dapm_add_routes(codec, omap3pandora_in_map, 213 ARRAY_SIZE(omap3pandora_in_map)); 214 215 return snd_soc_dapm_sync(codec); 216} 217 218static struct snd_soc_ops omap3pandora_ops = { 219 .hw_params = omap3pandora_hw_params, 220}; 221 222/* Digital audio interface glue - connects codec <--> CPU */ 223static struct snd_soc_dai_link omap3pandora_dai[] = { 224 { 225 .name = "PCM1773", 226 .stream_name = "HiFi Out", 227 .cpu_dai = &omap_mcbsp_dai[0], 228 .codec_dai = &twl4030_dai[TWL4030_DAI_HIFI], 229 .ops = &omap3pandora_ops, 230 .init = omap3pandora_out_init, 231 }, { 232 .name = "TWL4030", 233 .stream_name = "Line/Mic In", 234 .cpu_dai = &omap_mcbsp_dai[1], 235 .codec_dai = &twl4030_dai[TWL4030_DAI_HIFI], 236 .ops = &omap3pandora_ops, 237 .init = omap3pandora_in_init, 238 } 239}; 240 241/* SoC card */ 242static struct snd_soc_card snd_soc_card_omap3pandora = { 243 .name = "omap3pandora", 244 .platform = &omap_soc_platform, 245 .dai_link = omap3pandora_dai, 246 .num_links = ARRAY_SIZE(omap3pandora_dai), 247}; 248 249/* Audio subsystem */ 250static struct snd_soc_device omap3pandora_snd_data = { 251 .card = &snd_soc_card_omap3pandora, 252 .codec_dev = &soc_codec_dev_twl4030, 253}; 254 255static struct platform_device *omap3pandora_snd_device; 256 257static int __init omap3pandora_soc_init(void) 258{ 259 int ret; 260 261 if (!machine_is_omap3_pandora()) 262 return -ENODEV; 263 264 pr_info("OMAP3 Pandora SoC init\n"); 265 266 ret = gpio_request(OMAP3_PANDORA_DAC_POWER_GPIO, "dac_power"); 267 if (ret) { 268 pr_err(PREFIX "Failed to get DAC power GPIO\n"); 269 return ret; 270 } 271 272 ret = gpio_direction_output(OMAP3_PANDORA_DAC_POWER_GPIO, 0); 273 if (ret) { 274 pr_err(PREFIX "Failed to set DAC power GPIO direction\n"); 275 goto fail0; 276 } 277 278 ret = gpio_request(OMAP3_PANDORA_AMP_POWER_GPIO, "amp_power"); 279 if (ret) { 280 pr_err(PREFIX "Failed to get amp power GPIO\n"); 281 goto fail0; 282 } 283 284 ret = gpio_direction_output(OMAP3_PANDORA_AMP_POWER_GPIO, 0); 285 if (ret) { 286 pr_err(PREFIX "Failed to set amp power GPIO direction\n"); 287 goto fail1; 288 } 289 290 omap3pandora_snd_device = platform_device_alloc("soc-audio", -1); 291 if (omap3pandora_snd_device == NULL) { 292 pr_err(PREFIX "Platform device allocation failed\n"); 293 ret = -ENOMEM; 294 goto fail1; 295 } 296 297 platform_set_drvdata(omap3pandora_snd_device, &omap3pandora_snd_data); 298 omap3pandora_snd_data.dev = &omap3pandora_snd_device->dev; 299 *(unsigned int *)omap_mcbsp_dai[0].private_data = 1; /* McBSP2 */ 300 *(unsigned int *)omap_mcbsp_dai[1].private_data = 3; /* McBSP4 */ 301 302 ret = platform_device_add(omap3pandora_snd_device); 303 if (ret) { 304 pr_err(PREFIX "Unable to add platform device\n"); 305 goto fail2; 306 } 307 308 omap3pandora_dac_reg = regulator_get(&omap3pandora_snd_device->dev, "vcc"); 309 if (IS_ERR(omap3pandora_dac_reg)) { 310 pr_err(PREFIX "Failed to get DAC regulator from %s: %ld\n", 311 dev_name(&omap3pandora_snd_device->dev), 312 PTR_ERR(omap3pandora_dac_reg)); 313 goto fail3; 314 } 315 316 return 0; 317 318fail3: 319 platform_device_del(omap3pandora_snd_device); 320fail2: 321 platform_device_put(omap3pandora_snd_device); 322fail1: 323 gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO); 324fail0: 325 gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO); 326 return ret; 327} 328module_init(omap3pandora_soc_init); 329 330static void __exit omap3pandora_soc_exit(void) 331{ 332 regulator_put(omap3pandora_dac_reg); 333 platform_device_unregister(omap3pandora_snd_device); 334 gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO); 335 gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO); 336} 337module_exit(omap3pandora_soc_exit); 338 339MODULE_AUTHOR("Grazvydas Ignotas <notasas@gmail.com>"); 340MODULE_DESCRIPTION("ALSA SoC OMAP3 Pandora"); 341MODULE_LICENSE("GPL"); 342