Manuel Lauss | 4a161d2 | 2008-07-09 16:27:56 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Au12x0/Au1550 PSC ALSA ASoC audio support. |
| 3 | * |
| 4 | * (c) 2007-2008 MSC Vertriebsges.m.b.H., |
Manuel Lauss | 0f83d63 | 2009-10-31 20:15:08 +0100 | [diff] [blame] | 5 | * Manuel Lauss <manuel.lauss@gmail.com> |
Manuel Lauss | 4a161d2 | 2008-07-09 16:27:56 +0200 | [diff] [blame] | 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | * |
| 11 | * Au1xxx-PSC I2S glue. |
| 12 | * |
| 13 | * NOTE: all of these drivers can only work with a SINGLE instance |
| 14 | * of a PSC. Multiple independent audio devices are impossible |
| 15 | * with ASoC v1. |
| 16 | * NOTE: so far only PSC slave mode (bit- and frameclock) is supported. |
| 17 | */ |
| 18 | |
| 19 | #include <linux/init.h> |
| 20 | #include <linux/module.h> |
| 21 | #include <linux/suspend.h> |
| 22 | #include <sound/core.h> |
| 23 | #include <sound/pcm.h> |
| 24 | #include <sound/initval.h> |
| 25 | #include <sound/soc.h> |
| 26 | #include <asm/mach-au1x00/au1000.h> |
| 27 | #include <asm/mach-au1x00/au1xxx_psc.h> |
| 28 | |
| 29 | #include "psc.h" |
| 30 | |
| 31 | /* supported I2S DAI hardware formats */ |
| 32 | #define AU1XPSC_I2S_DAIFMT \ |
| 33 | (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_LEFT_J | \ |
| 34 | SND_SOC_DAIFMT_NB_NF) |
| 35 | |
| 36 | /* supported I2S direction */ |
| 37 | #define AU1XPSC_I2S_DIR \ |
| 38 | (SND_SOC_DAIDIR_PLAYBACK | SND_SOC_DAIDIR_CAPTURE) |
| 39 | |
| 40 | #define AU1XPSC_I2S_RATES \ |
| 41 | SNDRV_PCM_RATE_8000_192000 |
| 42 | |
| 43 | #define AU1XPSC_I2S_FMTS \ |
| 44 | (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE) |
| 45 | |
| 46 | #define I2SSTAT_BUSY(stype) \ |
| 47 | ((stype) == PCM_TX ? PSC_I2SSTAT_TB : PSC_I2SSTAT_RB) |
| 48 | #define I2SPCR_START(stype) \ |
| 49 | ((stype) == PCM_TX ? PSC_I2SPCR_TS : PSC_I2SPCR_RS) |
| 50 | #define I2SPCR_STOP(stype) \ |
| 51 | ((stype) == PCM_TX ? PSC_I2SPCR_TP : PSC_I2SPCR_RP) |
| 52 | #define I2SPCR_CLRFIFO(stype) \ |
| 53 | ((stype) == PCM_TX ? PSC_I2SPCR_TC : PSC_I2SPCR_RC) |
| 54 | |
| 55 | |
| 56 | /* instance data. There can be only one, MacLeod!!!! */ |
| 57 | static struct au1xpsc_audio_data *au1xpsc_i2s_workdata; |
| 58 | |
| 59 | static int au1xpsc_i2s_set_fmt(struct snd_soc_dai *cpu_dai, |
| 60 | unsigned int fmt) |
| 61 | { |
| 62 | struct au1xpsc_audio_data *pscdata = au1xpsc_i2s_workdata; |
| 63 | unsigned long ct; |
| 64 | int ret; |
| 65 | |
| 66 | ret = -EINVAL; |
| 67 | |
| 68 | ct = pscdata->cfg; |
| 69 | |
| 70 | ct &= ~(PSC_I2SCFG_XM | PSC_I2SCFG_MLJ); /* left-justified */ |
| 71 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| 72 | case SND_SOC_DAIFMT_I2S: |
| 73 | ct |= PSC_I2SCFG_XM; /* enable I2S mode */ |
| 74 | break; |
| 75 | case SND_SOC_DAIFMT_MSB: |
| 76 | break; |
| 77 | case SND_SOC_DAIFMT_LSB: |
| 78 | ct |= PSC_I2SCFG_MLJ; /* LSB (right-) justified */ |
| 79 | break; |
| 80 | default: |
| 81 | goto out; |
| 82 | } |
| 83 | |
| 84 | ct &= ~(PSC_I2SCFG_BI | PSC_I2SCFG_WI); /* IB-IF */ |
| 85 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| 86 | case SND_SOC_DAIFMT_NB_NF: |
| 87 | ct |= PSC_I2SCFG_BI | PSC_I2SCFG_WI; |
| 88 | break; |
| 89 | case SND_SOC_DAIFMT_NB_IF: |
| 90 | ct |= PSC_I2SCFG_BI; |
| 91 | break; |
| 92 | case SND_SOC_DAIFMT_IB_NF: |
| 93 | ct |= PSC_I2SCFG_WI; |
| 94 | break; |
| 95 | case SND_SOC_DAIFMT_IB_IF: |
| 96 | break; |
| 97 | default: |
| 98 | goto out; |
| 99 | } |
| 100 | |
| 101 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| 102 | case SND_SOC_DAIFMT_CBM_CFM: /* CODEC master */ |
| 103 | ct |= PSC_I2SCFG_MS; /* PSC I2S slave mode */ |
| 104 | break; |
| 105 | case SND_SOC_DAIFMT_CBS_CFS: /* CODEC slave */ |
| 106 | ct &= ~PSC_I2SCFG_MS; /* PSC I2S Master mode */ |
| 107 | break; |
| 108 | default: |
| 109 | goto out; |
| 110 | } |
| 111 | |
| 112 | pscdata->cfg = ct; |
| 113 | ret = 0; |
| 114 | out: |
| 115 | return ret; |
| 116 | } |
| 117 | |
| 118 | static int au1xpsc_i2s_hw_params(struct snd_pcm_substream *substream, |
Mark Brown | dee89c4 | 2008-11-18 22:11:38 +0000 | [diff] [blame] | 119 | struct snd_pcm_hw_params *params, |
| 120 | struct snd_soc_dai *dai) |
Manuel Lauss | 4a161d2 | 2008-07-09 16:27:56 +0200 | [diff] [blame] | 121 | { |
| 122 | struct au1xpsc_audio_data *pscdata = au1xpsc_i2s_workdata; |
| 123 | |
| 124 | int cfgbits; |
| 125 | unsigned long stat; |
| 126 | |
| 127 | /* check if the PSC is already streaming data */ |
| 128 | stat = au_readl(I2S_STAT(pscdata)); |
| 129 | if (stat & (PSC_I2SSTAT_TB | PSC_I2SSTAT_RB)) { |
| 130 | /* reject parameters not currently set up in hardware */ |
| 131 | cfgbits = au_readl(I2S_CFG(pscdata)); |
| 132 | if ((PSC_I2SCFG_GET_LEN(cfgbits) != params->msbits) || |
| 133 | (params_rate(params) != pscdata->rate)) |
| 134 | return -EINVAL; |
| 135 | } else { |
| 136 | /* set sample bitdepth */ |
| 137 | pscdata->cfg &= ~(0x1f << 4); |
| 138 | pscdata->cfg |= PSC_I2SCFG_SET_LEN(params->msbits); |
| 139 | /* remember current rate for other stream */ |
| 140 | pscdata->rate = params_rate(params); |
| 141 | } |
| 142 | return 0; |
| 143 | } |
| 144 | |
| 145 | /* Configure PSC late: on my devel systems the codec is I2S master and |
| 146 | * supplies the i2sbitclock __AND__ i2sMclk (!) to the PSC unit. ASoC |
| 147 | * uses aggressive PM and switches the codec off when it is not in use |
| 148 | * which also means the PSC unit doesn't get any clocks and is therefore |
| 149 | * dead. That's why this chunk here gets called from the trigger callback |
| 150 | * because I can be reasonably certain the codec is driving the clocks. |
| 151 | */ |
| 152 | static int au1xpsc_i2s_configure(struct au1xpsc_audio_data *pscdata) |
| 153 | { |
| 154 | unsigned long tmo; |
| 155 | |
| 156 | /* bring PSC out of sleep, and configure I2S unit */ |
| 157 | au_writel(PSC_CTRL_ENABLE, PSC_CTRL(pscdata)); |
| 158 | au_sync(); |
| 159 | |
| 160 | tmo = 1000000; |
| 161 | while (!(au_readl(I2S_STAT(pscdata)) & PSC_I2SSTAT_SR) && tmo) |
| 162 | tmo--; |
| 163 | |
| 164 | if (!tmo) |
| 165 | goto psc_err; |
| 166 | |
| 167 | au_writel(0, I2S_CFG(pscdata)); |
| 168 | au_sync(); |
| 169 | au_writel(pscdata->cfg | PSC_I2SCFG_DE_ENABLE, I2S_CFG(pscdata)); |
| 170 | au_sync(); |
| 171 | |
| 172 | /* wait for I2S controller to become ready */ |
| 173 | tmo = 1000000; |
| 174 | while (!(au_readl(I2S_STAT(pscdata)) & PSC_I2SSTAT_DR) && tmo) |
| 175 | tmo--; |
| 176 | |
| 177 | if (tmo) |
| 178 | return 0; |
| 179 | |
| 180 | psc_err: |
| 181 | au_writel(0, I2S_CFG(pscdata)); |
| 182 | au_writel(PSC_CTRL_SUSPEND, PSC_CTRL(pscdata)); |
| 183 | au_sync(); |
| 184 | return -ETIMEDOUT; |
| 185 | } |
| 186 | |
| 187 | static int au1xpsc_i2s_start(struct au1xpsc_audio_data *pscdata, int stype) |
| 188 | { |
| 189 | unsigned long tmo, stat; |
| 190 | int ret; |
| 191 | |
| 192 | ret = 0; |
| 193 | |
| 194 | /* if both TX and RX are idle, configure the PSC */ |
| 195 | stat = au_readl(I2S_STAT(pscdata)); |
| 196 | if (!(stat & (PSC_I2SSTAT_TB | PSC_I2SSTAT_RB))) { |
| 197 | ret = au1xpsc_i2s_configure(pscdata); |
| 198 | if (ret) |
| 199 | goto out; |
| 200 | } |
| 201 | |
| 202 | au_writel(I2SPCR_CLRFIFO(stype), I2S_PCR(pscdata)); |
| 203 | au_sync(); |
| 204 | au_writel(I2SPCR_START(stype), I2S_PCR(pscdata)); |
| 205 | au_sync(); |
| 206 | |
| 207 | /* wait for start confirmation */ |
| 208 | tmo = 1000000; |
| 209 | while (!(au_readl(I2S_STAT(pscdata)) & I2SSTAT_BUSY(stype)) && tmo) |
| 210 | tmo--; |
| 211 | |
| 212 | if (!tmo) { |
| 213 | au_writel(I2SPCR_STOP(stype), I2S_PCR(pscdata)); |
| 214 | au_sync(); |
| 215 | ret = -ETIMEDOUT; |
| 216 | } |
| 217 | out: |
| 218 | return ret; |
| 219 | } |
| 220 | |
| 221 | static int au1xpsc_i2s_stop(struct au1xpsc_audio_data *pscdata, int stype) |
| 222 | { |
| 223 | unsigned long tmo, stat; |
| 224 | |
| 225 | au_writel(I2SPCR_STOP(stype), I2S_PCR(pscdata)); |
| 226 | au_sync(); |
| 227 | |
| 228 | /* wait for stop confirmation */ |
| 229 | tmo = 1000000; |
| 230 | while ((au_readl(I2S_STAT(pscdata)) & I2SSTAT_BUSY(stype)) && tmo) |
| 231 | tmo--; |
| 232 | |
| 233 | /* if both TX and RX are idle, disable PSC */ |
| 234 | stat = au_readl(I2S_STAT(pscdata)); |
Roel Kluin | 2b30a55 | 2008-07-15 15:07:19 +0200 | [diff] [blame] | 235 | if (!(stat & (PSC_I2SSTAT_TB | PSC_I2SSTAT_RB))) { |
Manuel Lauss | 4a161d2 | 2008-07-09 16:27:56 +0200 | [diff] [blame] | 236 | au_writel(0, I2S_CFG(pscdata)); |
| 237 | au_sync(); |
| 238 | au_writel(PSC_CTRL_SUSPEND, PSC_CTRL(pscdata)); |
| 239 | au_sync(); |
| 240 | } |
| 241 | return 0; |
| 242 | } |
| 243 | |
Mark Brown | dee89c4 | 2008-11-18 22:11:38 +0000 | [diff] [blame] | 244 | static int au1xpsc_i2s_trigger(struct snd_pcm_substream *substream, int cmd, |
| 245 | struct snd_soc_dai *dai) |
Manuel Lauss | 4a161d2 | 2008-07-09 16:27:56 +0200 | [diff] [blame] | 246 | { |
| 247 | struct au1xpsc_audio_data *pscdata = au1xpsc_i2s_workdata; |
| 248 | int ret, stype = SUBSTREAM_TYPE(substream); |
| 249 | |
| 250 | switch (cmd) { |
| 251 | case SNDRV_PCM_TRIGGER_START: |
| 252 | case SNDRV_PCM_TRIGGER_RESUME: |
| 253 | ret = au1xpsc_i2s_start(pscdata, stype); |
| 254 | break; |
| 255 | case SNDRV_PCM_TRIGGER_STOP: |
| 256 | case SNDRV_PCM_TRIGGER_SUSPEND: |
| 257 | ret = au1xpsc_i2s_stop(pscdata, stype); |
| 258 | break; |
| 259 | default: |
| 260 | ret = -EINVAL; |
| 261 | } |
| 262 | return ret; |
| 263 | } |
| 264 | |
| 265 | static int au1xpsc_i2s_probe(struct platform_device *pdev, |
| 266 | struct snd_soc_dai *dai) |
| 267 | { |
Manuel Lauss | 0f83d63 | 2009-10-31 20:15:08 +0100 | [diff] [blame] | 268 | return au1xpsc_i2s_workdata ? 0 : -ENODEV; |
Manuel Lauss | 4a161d2 | 2008-07-09 16:27:56 +0200 | [diff] [blame] | 269 | } |
| 270 | |
| 271 | static void au1xpsc_i2s_remove(struct platform_device *pdev, |
| 272 | struct snd_soc_dai *dai) |
| 273 | { |
Manuel Lauss | 4a161d2 | 2008-07-09 16:27:56 +0200 | [diff] [blame] | 274 | } |
| 275 | |
Eric Miao | 6335d05 | 2009-03-03 09:41:00 +0800 | [diff] [blame] | 276 | static struct snd_soc_dai_ops au1xpsc_i2s_dai_ops = { |
| 277 | .trigger = au1xpsc_i2s_trigger, |
| 278 | .hw_params = au1xpsc_i2s_hw_params, |
| 279 | .set_fmt = au1xpsc_i2s_set_fmt, |
| 280 | }; |
| 281 | |
Manuel Lauss | 4a161d2 | 2008-07-09 16:27:56 +0200 | [diff] [blame] | 282 | struct snd_soc_dai au1xpsc_i2s_dai = { |
| 283 | .name = "au1xpsc_i2s", |
Manuel Lauss | 4a161d2 | 2008-07-09 16:27:56 +0200 | [diff] [blame] | 284 | .probe = au1xpsc_i2s_probe, |
| 285 | .remove = au1xpsc_i2s_remove, |
Manuel Lauss | 4a161d2 | 2008-07-09 16:27:56 +0200 | [diff] [blame] | 286 | .playback = { |
| 287 | .rates = AU1XPSC_I2S_RATES, |
| 288 | .formats = AU1XPSC_I2S_FMTS, |
| 289 | .channels_min = 2, |
| 290 | .channels_max = 8, /* 2 without external help */ |
| 291 | }, |
| 292 | .capture = { |
| 293 | .rates = AU1XPSC_I2S_RATES, |
| 294 | .formats = AU1XPSC_I2S_FMTS, |
| 295 | .channels_min = 2, |
| 296 | .channels_max = 8, /* 2 without external help */ |
| 297 | }, |
Eric Miao | 6335d05 | 2009-03-03 09:41:00 +0800 | [diff] [blame] | 298 | .ops = &au1xpsc_i2s_dai_ops, |
Manuel Lauss | 4a161d2 | 2008-07-09 16:27:56 +0200 | [diff] [blame] | 299 | }; |
| 300 | EXPORT_SYMBOL(au1xpsc_i2s_dai); |
| 301 | |
Manuel Lauss | 0f83d63 | 2009-10-31 20:15:08 +0100 | [diff] [blame] | 302 | static int __init au1xpsc_i2s_drvprobe(struct platform_device *pdev) |
| 303 | { |
| 304 | struct resource *r; |
| 305 | unsigned long sel; |
| 306 | int ret; |
| 307 | struct au1xpsc_audio_data *wd; |
| 308 | |
| 309 | if (au1xpsc_i2s_workdata) |
| 310 | return -EBUSY; |
| 311 | |
| 312 | wd = kzalloc(sizeof(struct au1xpsc_audio_data), GFP_KERNEL); |
| 313 | if (!wd) |
| 314 | return -ENOMEM; |
| 315 | |
| 316 | r = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 317 | if (!r) { |
| 318 | ret = -ENODEV; |
| 319 | goto out0; |
| 320 | } |
| 321 | |
| 322 | ret = -EBUSY; |
| 323 | wd->ioarea = request_mem_region(r->start, r->end - r->start + 1, |
| 324 | "au1xpsc_i2s"); |
| 325 | if (!wd->ioarea) |
| 326 | goto out0; |
| 327 | |
| 328 | wd->mmio = ioremap(r->start, 0xffff); |
| 329 | if (!wd->mmio) |
| 330 | goto out1; |
| 331 | |
| 332 | /* preserve PSC clock source set up by platform (dev.platform_data |
| 333 | * is already occupied by soc layer) |
| 334 | */ |
| 335 | sel = au_readl(PSC_SEL(wd)) & PSC_SEL_CLK_MASK; |
| 336 | au_writel(PSC_CTRL_DISABLE, PSC_CTRL(wd)); |
| 337 | au_sync(); |
| 338 | au_writel(PSC_SEL_PS_I2SMODE | sel, PSC_SEL(wd)); |
| 339 | au_writel(0, I2S_CFG(wd)); |
| 340 | au_sync(); |
| 341 | |
| 342 | /* preconfigure: set max rx/tx fifo depths */ |
| 343 | wd->cfg |= PSC_I2SCFG_RT_FIFO8 | PSC_I2SCFG_TT_FIFO8; |
| 344 | |
| 345 | /* don't wait for I2S core to become ready now; clocks may not |
| 346 | * be running yet; depending on clock input for PSC a wait might |
| 347 | * time out. |
| 348 | */ |
| 349 | |
| 350 | ret = snd_soc_register_dai(&au1xpsc_i2s_dai); |
| 351 | if (ret) |
| 352 | goto out1; |
| 353 | |
| 354 | /* finally add the DMA device for this PSC */ |
| 355 | wd->dmapd = au1xpsc_pcm_add(pdev); |
| 356 | if (wd->dmapd) { |
| 357 | platform_set_drvdata(pdev, wd); |
| 358 | au1xpsc_i2s_workdata = wd; |
| 359 | return 0; |
| 360 | } |
| 361 | |
| 362 | snd_soc_unregister_dai(&au1xpsc_i2s_dai); |
| 363 | out1: |
| 364 | release_resource(wd->ioarea); |
| 365 | kfree(wd->ioarea); |
| 366 | out0: |
| 367 | kfree(wd); |
| 368 | return ret; |
| 369 | } |
| 370 | |
| 371 | static int __devexit au1xpsc_i2s_drvremove(struct platform_device *pdev) |
| 372 | { |
| 373 | struct au1xpsc_audio_data *wd = platform_get_drvdata(pdev); |
| 374 | |
| 375 | if (wd->dmapd) |
| 376 | au1xpsc_pcm_destroy(wd->dmapd); |
| 377 | |
| 378 | snd_soc_unregister_dai(&au1xpsc_i2s_dai); |
| 379 | |
| 380 | au_writel(0, I2S_CFG(wd)); |
| 381 | au_sync(); |
| 382 | au_writel(PSC_CTRL_DISABLE, PSC_CTRL(wd)); |
| 383 | au_sync(); |
| 384 | |
| 385 | iounmap(wd->mmio); |
| 386 | release_resource(wd->ioarea); |
| 387 | kfree(wd->ioarea); |
| 388 | kfree(wd); |
| 389 | |
| 390 | au1xpsc_i2s_workdata = NULL; /* MDEV */ |
| 391 | |
| 392 | return 0; |
| 393 | } |
| 394 | |
| 395 | #ifdef CONFIG_PM |
| 396 | static int au1xpsc_i2s_drvsuspend(struct device *dev) |
| 397 | { |
| 398 | struct au1xpsc_audio_data *wd = dev_get_drvdata(dev); |
| 399 | |
| 400 | /* save interesting register and disable PSC */ |
| 401 | wd->pm[0] = au_readl(PSC_SEL(wd)); |
| 402 | |
| 403 | au_writel(0, I2S_CFG(wd)); |
| 404 | au_sync(); |
| 405 | au_writel(PSC_CTRL_DISABLE, PSC_CTRL(wd)); |
| 406 | au_sync(); |
| 407 | |
| 408 | return 0; |
| 409 | } |
| 410 | |
| 411 | static int au1xpsc_i2s_drvresume(struct device *dev) |
| 412 | { |
| 413 | struct au1xpsc_audio_data *wd = dev_get_drvdata(dev); |
| 414 | |
| 415 | /* select I2S mode and PSC clock */ |
| 416 | au_writel(PSC_CTRL_DISABLE, PSC_CTRL(wd)); |
| 417 | au_sync(); |
| 418 | au_writel(0, PSC_SEL(wd)); |
| 419 | au_sync(); |
| 420 | au_writel(wd->pm[0], PSC_SEL(wd)); |
| 421 | au_sync(); |
| 422 | |
| 423 | return 0; |
| 424 | } |
| 425 | |
| 426 | static struct dev_pm_ops au1xpsci2s_pmops = { |
| 427 | .suspend = au1xpsc_i2s_drvsuspend, |
| 428 | .resume = au1xpsc_i2s_drvresume, |
| 429 | }; |
| 430 | |
| 431 | #define AU1XPSCI2S_PMOPS &au1xpsci2s_pmops |
| 432 | |
| 433 | #else |
| 434 | |
| 435 | #define AU1XPSCI2S_PMOPS NULL |
| 436 | |
| 437 | #endif |
| 438 | |
| 439 | static struct platform_driver au1xpsc_i2s_driver = { |
| 440 | .driver = { |
| 441 | .name = "au1xpsc_i2s", |
| 442 | .owner = THIS_MODULE, |
| 443 | .pm = AU1XPSCI2S_PMOPS, |
| 444 | }, |
| 445 | .probe = au1xpsc_i2s_drvprobe, |
| 446 | .remove = __devexit_p(au1xpsc_i2s_drvremove), |
| 447 | }; |
| 448 | |
| 449 | static int __init au1xpsc_i2s_load(void) |
Manuel Lauss | 4a161d2 | 2008-07-09 16:27:56 +0200 | [diff] [blame] | 450 | { |
| 451 | au1xpsc_i2s_workdata = NULL; |
Manuel Lauss | 0f83d63 | 2009-10-31 20:15:08 +0100 | [diff] [blame] | 452 | return platform_driver_register(&au1xpsc_i2s_driver); |
Manuel Lauss | 4a161d2 | 2008-07-09 16:27:56 +0200 | [diff] [blame] | 453 | } |
| 454 | |
Manuel Lauss | 0f83d63 | 2009-10-31 20:15:08 +0100 | [diff] [blame] | 455 | static void __exit au1xpsc_i2s_unload(void) |
Manuel Lauss | 4a161d2 | 2008-07-09 16:27:56 +0200 | [diff] [blame] | 456 | { |
Manuel Lauss | 0f83d63 | 2009-10-31 20:15:08 +0100 | [diff] [blame] | 457 | platform_driver_unregister(&au1xpsc_i2s_driver); |
Manuel Lauss | 4a161d2 | 2008-07-09 16:27:56 +0200 | [diff] [blame] | 458 | } |
| 459 | |
Manuel Lauss | 0f83d63 | 2009-10-31 20:15:08 +0100 | [diff] [blame] | 460 | module_init(au1xpsc_i2s_load); |
| 461 | module_exit(au1xpsc_i2s_unload); |
Manuel Lauss | 4a161d2 | 2008-07-09 16:27:56 +0200 | [diff] [blame] | 462 | |
| 463 | MODULE_LICENSE("GPL"); |
| 464 | MODULE_DESCRIPTION("Au12x0/Au1550 PSC I2S ALSA ASoC audio driver"); |
Manuel Lauss | 0f83d63 | 2009-10-31 20:15:08 +0100 | [diff] [blame] | 465 | MODULE_AUTHOR("Manuel Lauss"); |