2 * pxa-ssp.c -- ALSA Soc Audio Layer
4 * Copyright 2005,2008 Wolfson Microelectronics PLC.
5 * Author: Liam Girdwood
6 * Mark Brown <broonie@opensource.wolfsonmicro.com>
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
14 * o Test network mode for > 16bit sample size
17 #include <linux/init.h>
18 #include <linux/module.h>
19 #include <linux/slab.h>
20 #include <linux/platform_device.h>
21 #include <linux/clk.h>
26 #include <sound/core.h>
27 #include <sound/pcm.h>
28 #include <sound/initval.h>
29 #include <sound/pcm_params.h>
30 #include <sound/soc.h>
31 #include <sound/pxa2xx-lib.h>
33 #include <mach/hardware.h>
35 #include <mach/regs-ssp.h>
36 #include <mach/audio.h>
39 #include "pxa2xx-pcm.h"
43 * SSP audio private data
46 struct ssp_device *ssp;
57 static void dump_registers(struct ssp_device *ssp)
59 dev_dbg(&ssp->pdev->dev, "SSCR0 0x%08x SSCR1 0x%08x SSTO 0x%08x\n",
60 ssp_read_reg(ssp, SSCR0), ssp_read_reg(ssp, SSCR1),
61 ssp_read_reg(ssp, SSTO));
63 dev_dbg(&ssp->pdev->dev, "SSPSP 0x%08x SSSR 0x%08x SSACD 0x%08x\n",
64 ssp_read_reg(ssp, SSPSP), ssp_read_reg(ssp, SSSR),
65 ssp_read_reg(ssp, SSACD));
68 static void ssp_enable(struct ssp_device *ssp)
72 sscr0 = __raw_readl(ssp->mmio_base + SSCR0) | SSCR0_SSE;
73 __raw_writel(sscr0, ssp->mmio_base + SSCR0);
76 static void ssp_disable(struct ssp_device *ssp)
80 sscr0 = __raw_readl(ssp->mmio_base + SSCR0) & ~SSCR0_SSE;
81 __raw_writel(sscr0, ssp->mmio_base + SSCR0);
84 struct pxa2xx_pcm_dma_data {
85 struct pxa2xx_pcm_dma_params params;
89 static struct pxa2xx_pcm_dma_params *
90 ssp_get_dma_params(struct ssp_device *ssp, int width4, int out)
92 struct pxa2xx_pcm_dma_data *dma;
94 dma = kzalloc(sizeof(struct pxa2xx_pcm_dma_data), GFP_KERNEL);
98 snprintf(dma->name, 20, "SSP%d PCM %s %s", ssp->port_id,
99 width4 ? "32-bit" : "16-bit", out ? "out" : "in");
101 dma->params.name = dma->name;
102 dma->params.drcmr = &DRCMR(out ? ssp->drcmr_tx : ssp->drcmr_rx);
103 dma->params.dcmd = (out ? (DCMD_INCSRCADDR | DCMD_FLOWTRG) :
104 (DCMD_INCTRGADDR | DCMD_FLOWSRC)) |
105 (width4 ? DCMD_WIDTH4 : DCMD_WIDTH2) | DCMD_BURST16;
106 dma->params.dev_addr = ssp->phys_base + SSDR;
111 static int pxa_ssp_startup(struct snd_pcm_substream *substream,
112 struct snd_soc_dai *dai)
114 struct snd_soc_pcm_runtime *rtd = substream->private_data;
115 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
116 struct ssp_priv *priv = cpu_dai->private_data;
117 struct ssp_device *ssp = priv->ssp;
120 if (!cpu_dai->active) {
121 clk_enable(ssp->clk);
125 if (cpu_dai->dma_data) {
126 kfree(cpu_dai->dma_data);
127 cpu_dai->dma_data = NULL;
132 static void pxa_ssp_shutdown(struct snd_pcm_substream *substream,
133 struct snd_soc_dai *dai)
135 struct snd_soc_pcm_runtime *rtd = substream->private_data;
136 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
137 struct ssp_priv *priv = cpu_dai->private_data;
138 struct ssp_device *ssp = priv->ssp;
140 if (!cpu_dai->active) {
142 clk_disable(ssp->clk);
145 if (cpu_dai->dma_data) {
146 kfree(cpu_dai->dma_data);
147 cpu_dai->dma_data = NULL;
153 static int pxa_ssp_suspend(struct snd_soc_dai *cpu_dai)
155 struct ssp_priv *priv = cpu_dai->private_data;
156 struct ssp_device *ssp = priv->ssp;
158 if (!cpu_dai->active)
159 clk_enable(ssp->clk);
161 priv->cr0 = __raw_readl(ssp->mmio_base + SSCR0);
162 priv->cr1 = __raw_readl(ssp->mmio_base + SSCR1);
163 priv->to = __raw_readl(ssp->mmio_base + SSTO);
164 priv->psp = __raw_readl(ssp->mmio_base + SSPSP);
167 clk_disable(ssp->clk);
171 static int pxa_ssp_resume(struct snd_soc_dai *cpu_dai)
173 struct ssp_priv *priv = cpu_dai->private_data;
174 struct ssp_device *ssp = priv->ssp;
175 uint32_t sssr = SSSR_ROR | SSSR_TUR | SSSR_BCE;
177 clk_enable(ssp->clk);
179 __raw_writel(sssr, ssp->mmio_base + SSSR);
180 __raw_writel(priv->cr0 & ~SSCR0_SSE, ssp->mmio_base + SSCR0);
181 __raw_writel(priv->cr1, ssp->mmio_base + SSCR1);
182 __raw_writel(priv->to, ssp->mmio_base + SSTO);
183 __raw_writel(priv->psp, ssp->mmio_base + SSPSP);
188 clk_disable(ssp->clk);
194 #define pxa_ssp_suspend NULL
195 #define pxa_ssp_resume NULL
199 * ssp_set_clkdiv - set SSP clock divider
200 * @div: serial clock rate divider
202 static void ssp_set_scr(struct ssp_device *ssp, u32 div)
204 u32 sscr0 = ssp_read_reg(ssp, SSCR0);
206 if (cpu_is_pxa25x() && ssp->type == PXA25x_SSP) {
207 sscr0 &= ~0x0000ff00;
208 sscr0 |= ((div - 2)/2) << 8; /* 2..512 */
210 sscr0 &= ~0x000fff00;
211 sscr0 |= (div - 1) << 8; /* 1..4096 */
213 ssp_write_reg(ssp, SSCR0, sscr0);
217 * ssp_get_clkdiv - get SSP clock divider
219 static u32 ssp_get_scr(struct ssp_device *ssp)
221 u32 sscr0 = ssp_read_reg(ssp, SSCR0);
224 if (cpu_is_pxa25x() && ssp->type == PXA25x_SSP)
225 div = ((sscr0 >> 8) & 0xff) * 2 + 2;
227 div = ((sscr0 >> 8) & 0xfff) + 1;
232 * Set the SSP ports SYSCLK.
234 static int pxa_ssp_set_dai_sysclk(struct snd_soc_dai *cpu_dai,
235 int clk_id, unsigned int freq, int dir)
237 struct ssp_priv *priv = cpu_dai->private_data;
238 struct ssp_device *ssp = priv->ssp;
241 u32 sscr0 = ssp_read_reg(ssp, SSCR0) &
242 ~(SSCR0_ECS | SSCR0_NCS | SSCR0_MOD | SSCR0_ACS);
244 dev_dbg(&ssp->pdev->dev,
245 "pxa_ssp_set_dai_sysclk id: %d, clk_id %d, freq %u\n",
246 cpu_dai->id, clk_id, freq);
249 case PXA_SSP_CLK_NET_PLL:
252 case PXA_SSP_CLK_PLL:
253 /* Internal PLL is fixed */
255 priv->sysclk = 1843200;
257 priv->sysclk = 13000000;
259 case PXA_SSP_CLK_EXT:
263 case PXA_SSP_CLK_NET:
265 sscr0 |= SSCR0_NCS | SSCR0_MOD;
267 case PXA_SSP_CLK_AUDIO:
276 /* The SSP clock must be disabled when changing SSP clock mode
277 * on PXA2xx. On PXA3xx it must be enabled when doing so. */
278 if (!cpu_is_pxa3xx())
279 clk_disable(ssp->clk);
280 val = ssp_read_reg(ssp, SSCR0) | sscr0;
281 ssp_write_reg(ssp, SSCR0, val);
282 if (!cpu_is_pxa3xx())
283 clk_enable(ssp->clk);
289 * Set the SSP clock dividers.
291 static int pxa_ssp_set_dai_clkdiv(struct snd_soc_dai *cpu_dai,
294 struct ssp_priv *priv = cpu_dai->private_data;
295 struct ssp_device *ssp = priv->ssp;
299 case PXA_SSP_AUDIO_DIV_ACDS:
300 val = (ssp_read_reg(ssp, SSACD) & ~0x7) | SSACD_ACDS(div);
301 ssp_write_reg(ssp, SSACD, val);
303 case PXA_SSP_AUDIO_DIV_SCDB:
304 val = ssp_read_reg(ssp, SSACD);
306 #if defined(CONFIG_PXA3xx)
311 case PXA_SSP_CLK_SCDB_1:
314 case PXA_SSP_CLK_SCDB_4:
316 #if defined(CONFIG_PXA3xx)
317 case PXA_SSP_CLK_SCDB_8:
327 ssp_write_reg(ssp, SSACD, val);
329 case PXA_SSP_DIV_SCR:
330 ssp_set_scr(ssp, div);
340 * Configure the PLL frequency pxa27x and (afaik - pxa320 only)
342 static int pxa_ssp_set_dai_pll(struct snd_soc_dai *cpu_dai, int pll_id,
343 int source, unsigned int freq_in, unsigned int freq_out)
345 struct ssp_priv *priv = cpu_dai->private_data;
346 struct ssp_device *ssp = priv->ssp;
347 u32 ssacd = ssp_read_reg(ssp, SSACD) & ~0x70;
349 #if defined(CONFIG_PXA3xx)
351 ssp_write_reg(ssp, SSACDD, 0);
378 /* PXA3xx has a clock ditherer which can be used to generate
379 * a wider range of frequencies - calculate a value for it.
381 if (cpu_is_pxa3xx()) {
385 do_div(tmp, freq_out);
388 val = (val << 16) | 64;
389 ssp_write_reg(ssp, SSACDD, val);
393 dev_dbg(&ssp->pdev->dev,
394 "Using SSACDD %x to supply %uHz\n",
403 ssp_write_reg(ssp, SSACD, ssacd);
409 * Set the active slots in TDM/Network mode
411 static int pxa_ssp_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai,
412 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
414 struct ssp_priv *priv = cpu_dai->private_data;
415 struct ssp_device *ssp = priv->ssp;
418 sscr0 = ssp_read_reg(ssp, SSCR0);
419 sscr0 &= ~(SSCR0_MOD | SSCR0_SlotsPerFrm(8) | SSCR0_EDSS | SSCR0_DSS);
423 sscr0 |= SSCR0_EDSS | SSCR0_DataSize(slot_width - 16);
425 sscr0 |= SSCR0_DataSize(slot_width);
428 /* enable network mode */
431 /* set number of active slots */
432 sscr0 |= SSCR0_SlotsPerFrm(slots);
434 /* set active slot mask */
435 ssp_write_reg(ssp, SSTSA, tx_mask);
436 ssp_write_reg(ssp, SSRSA, rx_mask);
438 ssp_write_reg(ssp, SSCR0, sscr0);
444 * Tristate the SSP DAI lines
446 static int pxa_ssp_set_dai_tristate(struct snd_soc_dai *cpu_dai,
449 struct ssp_priv *priv = cpu_dai->private_data;
450 struct ssp_device *ssp = priv->ssp;
453 sscr1 = ssp_read_reg(ssp, SSCR1);
458 ssp_write_reg(ssp, SSCR1, sscr1);
464 * Set up the SSP DAI format.
465 * The SSP Port must be inactive before calling this function as the
466 * physical interface format is changed.
468 static int pxa_ssp_set_dai_fmt(struct snd_soc_dai *cpu_dai,
471 struct ssp_priv *priv = cpu_dai->private_data;
472 struct ssp_device *ssp = priv->ssp;
477 /* check if we need to change anything at all */
478 if (priv->dai_fmt == fmt)
481 /* we can only change the settings if the port is not in use */
482 if (ssp_read_reg(ssp, SSCR0) & SSCR0_SSE) {
483 dev_err(&ssp->pdev->dev,
484 "can't change hardware dai format: stream is in use");
488 /* reset port settings */
489 sscr0 = ssp_read_reg(ssp, SSCR0) &
490 (SSCR0_ECS | SSCR0_NCS | SSCR0_MOD | SSCR0_ACS);
491 sscr1 = SSCR1_RxTresh(8) | SSCR1_TxTresh(7);
494 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
495 case SND_SOC_DAIFMT_CBM_CFM:
496 sscr1 |= SSCR1_SCLKDIR | SSCR1_SFRMDIR;
498 case SND_SOC_DAIFMT_CBM_CFS:
499 sscr1 |= SSCR1_SCLKDIR;
501 case SND_SOC_DAIFMT_CBS_CFS:
507 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
508 case SND_SOC_DAIFMT_NB_NF:
509 sspsp |= SSPSP_SFRMP;
511 case SND_SOC_DAIFMT_NB_IF:
513 case SND_SOC_DAIFMT_IB_IF:
514 sspsp |= SSPSP_SCMODE(2);
516 case SND_SOC_DAIFMT_IB_NF:
517 sspsp |= SSPSP_SCMODE(2) | SSPSP_SFRMP;
523 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
524 case SND_SOC_DAIFMT_I2S:
526 sscr1 |= SSCR1_RWOT | SSCR1_TRAIL;
527 /* See hw_params() */
530 case SND_SOC_DAIFMT_DSP_A:
532 case SND_SOC_DAIFMT_DSP_B:
533 sscr0 |= SSCR0_MOD | SSCR0_PSP;
534 sscr1 |= SSCR1_TRAIL | SSCR1_RWOT;
541 ssp_write_reg(ssp, SSCR0, sscr0);
542 ssp_write_reg(ssp, SSCR1, sscr1);
543 ssp_write_reg(ssp, SSPSP, sspsp);
547 /* Since we are configuring the timings for the format by hand
548 * we have to defer some things until hw_params() where we
549 * know parameters like the sample size.
557 * Set the SSP audio DMA parameters and sample size.
558 * Can be called multiple times by oss emulation.
560 static int pxa_ssp_hw_params(struct snd_pcm_substream *substream,
561 struct snd_pcm_hw_params *params,
562 struct snd_soc_dai *dai)
564 struct snd_soc_pcm_runtime *rtd = substream->private_data;
565 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
566 struct ssp_priv *priv = cpu_dai->private_data;
567 struct ssp_device *ssp = priv->ssp;
568 int chn = params_channels(params);
571 int width = snd_pcm_format_physical_width(params_format(params));
572 int ttsa = ssp_read_reg(ssp, SSTSA) & 0xf;
574 /* generate correct DMA params */
575 if (cpu_dai->dma_data)
576 kfree(cpu_dai->dma_data);
578 /* Network mode with one active slot (ttsa == 1) can be used
579 * to force 16-bit frame width on the wire (for S16_LE), even
580 * with two channels. Use 16-bit DMA transfers for this case.
582 cpu_dai->dma_data = ssp_get_dma_params(ssp,
583 ((chn == 2) && (ttsa != 1)) || (width == 32),
584 substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
586 /* we can only change the settings if the port is not in use */
587 if (ssp_read_reg(ssp, SSCR0) & SSCR0_SSE)
590 /* clear selected SSP bits */
591 sscr0 = ssp_read_reg(ssp, SSCR0) & ~(SSCR0_DSS | SSCR0_EDSS);
592 ssp_write_reg(ssp, SSCR0, sscr0);
595 sscr0 = ssp_read_reg(ssp, SSCR0);
596 switch (params_format(params)) {
597 case SNDRV_PCM_FORMAT_S16_LE:
600 sscr0 |= SSCR0_FPCKE;
602 sscr0 |= SSCR0_DataSize(16);
604 case SNDRV_PCM_FORMAT_S24_LE:
605 sscr0 |= (SSCR0_EDSS | SSCR0_DataSize(8));
607 case SNDRV_PCM_FORMAT_S32_LE:
608 sscr0 |= (SSCR0_EDSS | SSCR0_DataSize(16));
611 ssp_write_reg(ssp, SSCR0, sscr0);
613 switch (priv->dai_fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
614 case SND_SOC_DAIFMT_I2S:
615 sspsp = ssp_read_reg(ssp, SSPSP);
617 if ((ssp_get_scr(ssp) == 4) && (width == 16)) {
618 /* This is a special case where the bitclk is 64fs
619 * and we're not dealing with 2*32 bits of audio
622 * The SSP values used for that are all found out by
623 * trying and failing a lot; some of the registers
624 * needed for that mode are only available on PXA3xx.
628 if (!cpu_is_pxa3xx())
631 sspsp |= SSPSP_SFRMWDTH(width * 2);
632 sspsp |= SSPSP_SFRMDLY(width * 4);
633 sspsp |= SSPSP_EDMYSTOP(3);
634 sspsp |= SSPSP_DMYSTOP(3);
635 sspsp |= SSPSP_DMYSTRT(1);
640 /* The frame width is the width the LRCLK is
641 * asserted for; the delay is expressed in
642 * half cycle units. We need the extra cycle
643 * because the data starts clocking out one BCLK
644 * after LRCLK changes polarity.
646 sspsp |= SSPSP_SFRMWDTH(width + 1);
647 sspsp |= SSPSP_SFRMDLY((width + 1) * 2);
648 sspsp |= SSPSP_DMYSTRT(1);
651 ssp_write_reg(ssp, SSPSP, sspsp);
657 /* When we use a network mode, we always require TDM slots
658 * - complain loudly and fail if they've not been set up yet.
660 if ((sscr0 & SSCR0_MOD) && !ttsa) {
661 dev_err(&ssp->pdev->dev, "No TDM timeslot configured\n");
670 static int pxa_ssp_trigger(struct snd_pcm_substream *substream, int cmd,
671 struct snd_soc_dai *dai)
673 struct snd_soc_pcm_runtime *rtd = substream->private_data;
674 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
676 struct ssp_priv *priv = cpu_dai->private_data;
677 struct ssp_device *ssp = priv->ssp;
681 case SNDRV_PCM_TRIGGER_RESUME:
684 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
685 val = ssp_read_reg(ssp, SSCR1);
686 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
690 ssp_write_reg(ssp, SSCR1, val);
691 val = ssp_read_reg(ssp, SSSR);
692 ssp_write_reg(ssp, SSSR, val);
694 case SNDRV_PCM_TRIGGER_START:
695 val = ssp_read_reg(ssp, SSCR1);
696 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
700 ssp_write_reg(ssp, SSCR1, val);
703 case SNDRV_PCM_TRIGGER_STOP:
704 val = ssp_read_reg(ssp, SSCR1);
705 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
709 ssp_write_reg(ssp, SSCR1, val);
711 case SNDRV_PCM_TRIGGER_SUSPEND:
714 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
715 val = ssp_read_reg(ssp, SSCR1);
716 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
720 ssp_write_reg(ssp, SSCR1, val);
732 static int pxa_ssp_probe(struct platform_device *pdev,
733 struct snd_soc_dai *dai)
735 struct ssp_priv *priv;
738 priv = kzalloc(sizeof(struct ssp_priv), GFP_KERNEL);
742 priv->ssp = ssp_request(dai->id + 1, "SoC audio");
743 if (priv->ssp == NULL) {
748 priv->dai_fmt = (unsigned int) -1;
749 dai->private_data = priv;
758 static void pxa_ssp_remove(struct platform_device *pdev,
759 struct snd_soc_dai *dai)
761 struct ssp_priv *priv = dai->private_data;
765 #define PXA_SSP_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
766 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
767 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | \
768 SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
770 #define PXA_SSP_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
771 SNDRV_PCM_FMTBIT_S24_LE | \
772 SNDRV_PCM_FMTBIT_S32_LE)
774 static struct snd_soc_dai_ops pxa_ssp_dai_ops = {
775 .startup = pxa_ssp_startup,
776 .shutdown = pxa_ssp_shutdown,
777 .trigger = pxa_ssp_trigger,
778 .hw_params = pxa_ssp_hw_params,
779 .set_sysclk = pxa_ssp_set_dai_sysclk,
780 .set_clkdiv = pxa_ssp_set_dai_clkdiv,
781 .set_pll = pxa_ssp_set_dai_pll,
782 .set_fmt = pxa_ssp_set_dai_fmt,
783 .set_tdm_slot = pxa_ssp_set_dai_tdm_slot,
784 .set_tristate = pxa_ssp_set_dai_tristate,
787 struct snd_soc_dai pxa_ssp_dai[] = {
789 .name = "pxa2xx-ssp1",
791 .probe = pxa_ssp_probe,
792 .remove = pxa_ssp_remove,
793 .suspend = pxa_ssp_suspend,
794 .resume = pxa_ssp_resume,
798 .rates = PXA_SSP_RATES,
799 .formats = PXA_SSP_FORMATS,
804 .rates = PXA_SSP_RATES,
805 .formats = PXA_SSP_FORMATS,
807 .ops = &pxa_ssp_dai_ops,
809 { .name = "pxa2xx-ssp2",
811 .probe = pxa_ssp_probe,
812 .remove = pxa_ssp_remove,
813 .suspend = pxa_ssp_suspend,
814 .resume = pxa_ssp_resume,
818 .rates = PXA_SSP_RATES,
819 .formats = PXA_SSP_FORMATS,
824 .rates = PXA_SSP_RATES,
825 .formats = PXA_SSP_FORMATS,
827 .ops = &pxa_ssp_dai_ops,
830 .name = "pxa2xx-ssp3",
832 .probe = pxa_ssp_probe,
833 .remove = pxa_ssp_remove,
834 .suspend = pxa_ssp_suspend,
835 .resume = pxa_ssp_resume,
839 .rates = PXA_SSP_RATES,
840 .formats = PXA_SSP_FORMATS,
845 .rates = PXA_SSP_RATES,
846 .formats = PXA_SSP_FORMATS,
848 .ops = &pxa_ssp_dai_ops,
851 .name = "pxa2xx-ssp4",
853 .probe = pxa_ssp_probe,
854 .remove = pxa_ssp_remove,
855 .suspend = pxa_ssp_suspend,
856 .resume = pxa_ssp_resume,
860 .rates = PXA_SSP_RATES,
861 .formats = PXA_SSP_FORMATS,
866 .rates = PXA_SSP_RATES,
867 .formats = PXA_SSP_FORMATS,
869 .ops = &pxa_ssp_dai_ops,
872 EXPORT_SYMBOL_GPL(pxa_ssp_dai);
874 static int __init pxa_ssp_init(void)
876 return snd_soc_register_dais(pxa_ssp_dai, ARRAY_SIZE(pxa_ssp_dai));
878 module_init(pxa_ssp_init);
880 static void __exit pxa_ssp_exit(void)
882 snd_soc_unregister_dais(pxa_ssp_dai, ARRAY_SIZE(pxa_ssp_dai));
884 module_exit(pxa_ssp_exit);
886 /* Module information */
887 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
888 MODULE_DESCRIPTION("PXA SSP/PCM SoC Interface");
889 MODULE_LICENSE("GPL");