1 // SPDX-License-Identifier: GPL-2.0-only
3  * Driver for AT73C213 16-bit stereo DAC connected to Atmel SSC
5  * Copyright (C) 2006-2007 Atmel Norway
14 #include <linux/dma-mapping.h>
27 #include <linux/atmel-ssc.h>
41 	0x00,	/* 00 - CTRL    */
42 	0x05,	/* 01 - LLIG    */
43 	0x05,	/* 02 - RLIG    */
44 	0x08,	/* 03 - LPMG    */
45 	0x08,	/* 04 - RPMG    */
46 	0x00,	/* 05 - LLOG    */
47 	0x00,	/* 06 - RLOG    */
48 	0x22,	/* 07 - OLC     */
49 	0x09,	/* 08 - MC      */
50 	0x00,	/* 09 - CSFC    */
51 	0x00,	/* 0A - MISC    */
52 	0x00,	/* 0B -         */
53 	0x00,	/* 0C - PRECH   */
54 	0x05,	/* 0D - AUXG    */
55 	0x00,	/* 0E -         */
56 	0x00,	/* 0F -         */
57 	0x00,	/* 10 - RST     */
58 	0x00,	/* 11 - PA_CTRL */
69 	struct ssc_device		*ssc;  member
75 	/* Protect SSC registers against concurrent access. */
81 #define get_chip(card) ((struct snd_at73c213 *)card->private_data)
95 	chip->spi_wbuffer[0] = reg;  in snd_at73c213_write_reg()
96 	chip->spi_wbuffer[1] = val;  in snd_at73c213_write_reg()
98 	msg_xfer.tx_buf = chip->spi_wbuffer;  in snd_at73c213_write_reg()
99 	msg_xfer.rx_buf = chip->spi_rbuffer;  in snd_at73c213_write_reg()
102 	retval = spi_sync(chip->spi, &msg);  in snd_at73c213_write_reg()
105 		chip->reg_image[reg] = val;  in snd_at73c213_write_reg()
115 	.rate_min	= 8000,  /* Replaced by chip->bitrate later. */
116 	.rate_max	= 50000, /* Replaced by chip->bitrate later. */
119 	.buffer_bytes_max = 64 * 1024 - 1,
121 	.period_bytes_max = 64 * 1024 - 1,
131 	unsigned long ssc_rate = clk_get_rate(chip->ssc->clk);  in snd_at73c213_set_bitrate()
146 	/* SSC clock / (bitrate * stereo * 16-bit). */  in snd_at73c213_set_bitrate()
150 	max_tries = (ssc_div_max - ssc_div_min) / 2;  in snd_at73c213_set_bitrate()
159 		ssc_div -= 2;  in snd_at73c213_set_bitrate()
161 			return -ENXIO;  in snd_at73c213_set_bitrate()
166 		/* SSC clock / (ssc divider * 16-bit * stereo). */  in snd_at73c213_set_bitrate()
168 			return -ENXIO;  in snd_at73c213_set_bitrate()
173 		status = clk_round_rate(chip->board->dac_clk, dac_rate_new);  in snd_at73c213_set_bitrate()
182 	} while (--max_tries);  in snd_at73c213_set_bitrate()
185 	return -ENXIO;  in snd_at73c213_set_bitrate()
188 	status = clk_set_rate(chip->board->dac_clk, status);  in snd_at73c213_set_bitrate()
192 	/* Set divider in SSC device. */  in snd_at73c213_set_bitrate()
193 	ssc_writel(chip->ssc->regs, CMR, ssc_div/2);  in snd_at73c213_set_bitrate()
195 	/* SSC clock / (ssc divider * 16-bit * stereo). */  in snd_at73c213_set_bitrate()
196 	chip->bitrate = ssc_rate / (ssc_div * 16 * 2);  in snd_at73c213_set_bitrate()
198 	dev_info(&chip->spi->dev,  in snd_at73c213_set_bitrate()
200 			chip->bitrate, ssc_div);  in snd_at73c213_set_bitrate()
208 	struct snd_pcm_runtime *runtime = substream->runtime;  in snd_at73c213_pcm_open()
216 	snd_at73c213_playback_hw.rate_min = chip->bitrate;  in snd_at73c213_pcm_open()
217 	snd_at73c213_playback_hw.rate_max = chip->bitrate;  in snd_at73c213_pcm_open()
218 	runtime->hw = snd_at73c213_playback_hw;  in snd_at73c213_pcm_open()
219 	chip->substream = substream;  in snd_at73c213_pcm_open()
221 	err = clk_enable(chip->ssc->clk);  in snd_at73c213_pcm_open()
231 	chip->substream = NULL;  in snd_at73c213_pcm_close()
232 	clk_disable(chip->ssc->clk);  in snd_at73c213_pcm_close()
243 	val = ssc_readl(chip->ssc->regs, TFMR);  in snd_at73c213_pcm_hw_params()
244 	val = SSC_BFINS(TFMR_DATNB, channels - 1, val);  in snd_at73c213_pcm_hw_params()
245 	ssc_writel(chip->ssc->regs, TFMR, val);  in snd_at73c213_pcm_hw_params()
253 	struct snd_pcm_runtime *runtime = substream->runtime;  in snd_at73c213_pcm_prepare()
256 	block_size = frames_to_bytes(runtime, runtime->period_size);  in snd_at73c213_pcm_prepare()
258 	chip->period = 0;  in snd_at73c213_pcm_prepare()
260 	ssc_writel(chip->ssc->regs, PDC_TPR,  in snd_at73c213_pcm_prepare()
261 			(long)runtime->dma_addr);  in snd_at73c213_pcm_prepare()
262 	ssc_writel(chip->ssc->regs, PDC_TCR,  in snd_at73c213_pcm_prepare()
263 			runtime->period_size * runtime->channels);  in snd_at73c213_pcm_prepare()
264 	ssc_writel(chip->ssc->regs, PDC_TNPR,  in snd_at73c213_pcm_prepare()
265 			(long)runtime->dma_addr + block_size);  in snd_at73c213_pcm_prepare()
266 	ssc_writel(chip->ssc->regs, PDC_TNCR,  in snd_at73c213_pcm_prepare()
267 			runtime->period_size * runtime->channels);  in snd_at73c213_pcm_prepare()
278 	spin_lock(&chip->lock);  in snd_at73c213_pcm_trigger()
282 		ssc_writel(chip->ssc->regs, IER, SSC_BIT(IER_ENDTX));  in snd_at73c213_pcm_trigger()
283 		ssc_writel(chip->ssc->regs, PDC_PTCR, SSC_BIT(PDC_PTCR_TXTEN));  in snd_at73c213_pcm_trigger()
286 		ssc_writel(chip->ssc->regs, PDC_PTCR, SSC_BIT(PDC_PTCR_TXTDIS));  in snd_at73c213_pcm_trigger()
287 		ssc_writel(chip->ssc->regs, IDR, SSC_BIT(IDR_ENDTX));  in snd_at73c213_pcm_trigger()
290 		dev_dbg(&chip->spi->dev, "spurious command %x\n", cmd);  in snd_at73c213_pcm_trigger()
291 		retval = -EINVAL;  in snd_at73c213_pcm_trigger()
295 	spin_unlock(&chip->lock);  in snd_at73c213_pcm_trigger()
304 	struct snd_pcm_runtime *runtime = substream->runtime;  in snd_at73c213_pcm_pointer()
308 	bytes = ssc_readl(chip->ssc->regs, PDC_TPR)  in snd_at73c213_pcm_pointer()
309 		- (unsigned long)runtime->dma_addr;  in snd_at73c213_pcm_pointer()
312 	if (pos >= runtime->buffer_size)  in snd_at73c213_pcm_pointer()
313 		pos -= runtime->buffer_size;  in snd_at73c213_pcm_pointer()
332 	retval = snd_pcm_new(chip->card, chip->card->shortname,  in snd_at73c213_pcm_new()
337 	pcm->private_data = chip;  in snd_at73c213_pcm_new()
338 	pcm->info_flags = SNDRV_PCM_INFO_BLOCK_TRANSFER;  in snd_at73c213_pcm_new()
339 	strcpy(pcm->name, "at73c213");  in snd_at73c213_pcm_new()
340 	chip->pcm = pcm;  in snd_at73c213_pcm_new()
344 	snd_pcm_set_managed_buffer_all(chip->pcm,  in snd_at73c213_pcm_new()
345 			SNDRV_DMA_TYPE_DEV, &chip->ssc->pdev->dev,  in snd_at73c213_pcm_new()
354 	struct snd_pcm_runtime *runtime = chip->substream->runtime;  in snd_at73c213_interrupt()
361 	spin_lock(&chip->lock);  in snd_at73c213_interrupt()
363 	block_size = frames_to_bytes(runtime, runtime->period_size);  in snd_at73c213_interrupt()
364 	status = ssc_readl(chip->ssc->regs, IMR);  in snd_at73c213_interrupt()
367 		chip->period++;  in snd_at73c213_interrupt()
368 		if (chip->period == runtime->periods)  in snd_at73c213_interrupt()
369 			chip->period = 0;  in snd_at73c213_interrupt()
370 		next_period = chip->period + 1;  in snd_at73c213_interrupt()
371 		if (next_period == runtime->periods)  in snd_at73c213_interrupt()
376 		ssc_writel(chip->ssc->regs, PDC_TNPR,  in snd_at73c213_interrupt()
377 				(long)runtime->dma_addr + offset);  in snd_at73c213_interrupt()
378 		ssc_writel(chip->ssc->regs, PDC_TNCR,  in snd_at73c213_interrupt()
379 				runtime->period_size * runtime->channels);  in snd_at73c213_interrupt()
383 	ssc_readl(chip->ssc->regs, IMR);  in snd_at73c213_interrupt()
384 	spin_unlock(&chip->lock);  in snd_at73c213_interrupt()
387 		snd_pcm_period_elapsed(chip->substream);  in snd_at73c213_interrupt()
399 	int reg = kcontrol->private_value & 0xff;  in snd_at73c213_mono_get()
400 	int shift = (kcontrol->private_value >> 8) & 0xff;  in snd_at73c213_mono_get()
401 	int mask = (kcontrol->private_value >> 16) & 0xff;  in snd_at73c213_mono_get()
402 	int invert = (kcontrol->private_value >> 24) & 0xff;  in snd_at73c213_mono_get()
404 	mutex_lock(&chip->mixer_lock);  in snd_at73c213_mono_get()
406 	ucontrol->value.integer.value[0] =  in snd_at73c213_mono_get()
407 		(chip->reg_image[reg] >> shift) & mask;  in snd_at73c213_mono_get()
410 		ucontrol->value.integer.value[0] =  in snd_at73c213_mono_get()
411 			mask - ucontrol->value.integer.value[0];  in snd_at73c213_mono_get()
413 	mutex_unlock(&chip->mixer_lock);  in snd_at73c213_mono_get()
422 	int reg = kcontrol->private_value & 0xff;  in snd_at73c213_mono_put()
423 	int shift = (kcontrol->private_value >> 8) & 0xff;  in snd_at73c213_mono_put()
424 	int mask = (kcontrol->private_value >> 16) & 0xff;  in snd_at73c213_mono_put()
425 	int invert = (kcontrol->private_value >> 24) & 0xff;  in snd_at73c213_mono_put()
429 	val = (ucontrol->value.integer.value[0] & mask);  in snd_at73c213_mono_put()
431 		val = mask - val;  in snd_at73c213_mono_put()
434 	mutex_lock(&chip->mixer_lock);  in snd_at73c213_mono_put()
436 	val = (chip->reg_image[reg] & ~(mask << shift)) | val;  in snd_at73c213_mono_put()
437 	change = val != chip->reg_image[reg];  in snd_at73c213_mono_put()
440 	mutex_unlock(&chip->mixer_lock);  in snd_at73c213_mono_put()
451 	int mask = (kcontrol->private_value >> 24) & 0xff;  in snd_at73c213_stereo_info()
454 		uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;  in snd_at73c213_stereo_info()
456 		uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;  in snd_at73c213_stereo_info()
458 	uinfo->count = 2;  in snd_at73c213_stereo_info()
459 	uinfo->value.integer.min = 0;  in snd_at73c213_stereo_info()
460 	uinfo->value.integer.max = mask;  in snd_at73c213_stereo_info()
469 	int left_reg = kcontrol->private_value & 0xff;  in snd_at73c213_stereo_get()
470 	int right_reg = (kcontrol->private_value >> 8) & 0xff;  in snd_at73c213_stereo_get()
471 	int shift_left = (kcontrol->private_value >> 16) & 0x07;  in snd_at73c213_stereo_get()
472 	int shift_right = (kcontrol->private_value >> 19) & 0x07;  in snd_at73c213_stereo_get()
473 	int mask = (kcontrol->private_value >> 24) & 0xff;  in snd_at73c213_stereo_get()
474 	int invert = (kcontrol->private_value >> 22) & 1;  in snd_at73c213_stereo_get()
476 	mutex_lock(&chip->mixer_lock);  in snd_at73c213_stereo_get()
478 	ucontrol->value.integer.value[0] =  in snd_at73c213_stereo_get()
479 		(chip->reg_image[left_reg] >> shift_left) & mask;  in snd_at73c213_stereo_get()
480 	ucontrol->value.integer.value[1] =  in snd_at73c213_stereo_get()
481 		(chip->reg_image[right_reg] >> shift_right) & mask;  in snd_at73c213_stereo_get()
484 		ucontrol->value.integer.value[0] =  in snd_at73c213_stereo_get()
485 			mask - ucontrol->value.integer.value[0];  in snd_at73c213_stereo_get()
486 		ucontrol->value.integer.value[1] =  in snd_at73c213_stereo_get()
487 			mask - ucontrol->value.integer.value[1];  in snd_at73c213_stereo_get()
490 	mutex_unlock(&chip->mixer_lock);  in snd_at73c213_stereo_get()
499 	int left_reg = kcontrol->private_value & 0xff;  in snd_at73c213_stereo_put()
500 	int right_reg = (kcontrol->private_value >> 8) & 0xff;  in snd_at73c213_stereo_put()
501 	int shift_left = (kcontrol->private_value >> 16) & 0x07;  in snd_at73c213_stereo_put()
502 	int shift_right = (kcontrol->private_value >> 19) & 0x07;  in snd_at73c213_stereo_put()
503 	int mask = (kcontrol->private_value >> 24) & 0xff;  in snd_at73c213_stereo_put()
504 	int invert = (kcontrol->private_value >> 22) & 1;  in snd_at73c213_stereo_put()
508 	val1 = ucontrol->value.integer.value[0] & mask;  in snd_at73c213_stereo_put()
509 	val2 = ucontrol->value.integer.value[1] & mask;  in snd_at73c213_stereo_put()
511 		val1 = mask - val1;  in snd_at73c213_stereo_put()
512 		val2 = mask - val2;  in snd_at73c213_stereo_put()
517 	mutex_lock(&chip->mixer_lock);  in snd_at73c213_stereo_put()
519 	val1 = (chip->reg_image[left_reg] & ~(mask << shift_left)) | val1;  in snd_at73c213_stereo_put()
520 	val2 = (chip->reg_image[right_reg] & ~(mask << shift_right)) | val2;  in snd_at73c213_stereo_put()
521 	change = val1 != chip->reg_image[left_reg]  in snd_at73c213_stereo_put()
522 		|| val2 != chip->reg_image[right_reg];  in snd_at73c213_stereo_put()
525 		mutex_unlock(&chip->mixer_lock);  in snd_at73c213_stereo_put()
530 		mutex_unlock(&chip->mixer_lock);  in snd_at73c213_stereo_put()
534 	mutex_unlock(&chip->mixer_lock);  in snd_at73c213_stereo_put()
548 	int reg = kcontrol->private_value & 0xff;  in snd_at73c213_mono_switch_get()
549 	int shift = (kcontrol->private_value >> 8) & 0xff;  in snd_at73c213_mono_switch_get()
550 	int invert = (kcontrol->private_value >> 24) & 0xff;  in snd_at73c213_mono_switch_get()
552 	mutex_lock(&chip->mixer_lock);  in snd_at73c213_mono_switch_get()
554 	ucontrol->value.integer.value[0] =  in snd_at73c213_mono_switch_get()
555 		(chip->reg_image[reg] >> shift) & 0x01;  in snd_at73c213_mono_switch_get()
558 		ucontrol->value.integer.value[0] =  in snd_at73c213_mono_switch_get()
559 			0x01 - ucontrol->value.integer.value[0];  in snd_at73c213_mono_switch_get()
561 	mutex_unlock(&chip->mixer_lock);  in snd_at73c213_mono_switch_get()
570 	int reg = kcontrol->private_value & 0xff;  in snd_at73c213_mono_switch_put()
571 	int shift = (kcontrol->private_value >> 8) & 0xff;  in snd_at73c213_mono_switch_put()
572 	int mask = (kcontrol->private_value >> 16) & 0xff;  in snd_at73c213_mono_switch_put()
573 	int invert = (kcontrol->private_value >> 24) & 0xff;  in snd_at73c213_mono_switch_put()
577 	if (ucontrol->value.integer.value[0])  in snd_at73c213_mono_switch_put()
583 		val = mask - val;  in snd_at73c213_mono_switch_put()
586 	mutex_lock(&chip->mixer_lock);  in snd_at73c213_mono_switch_put()
588 	val |= (chip->reg_image[reg] & ~(mask << shift));  in snd_at73c213_mono_switch_put()
589 	change = val != chip->reg_image[reg];  in snd_at73c213_mono_switch_put()
593 	mutex_unlock(&chip->mixer_lock);  in snd_at73c213_mono_switch_put()
604 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;  in snd_at73c213_pa_volume_info()
605 	uinfo->count = 1;  in snd_at73c213_pa_volume_info()
606 	uinfo->value.integer.min = 0;  in snd_at73c213_pa_volume_info()
607 	uinfo->value.integer.max = ((kcontrol->private_value >> 16) & 0xff) - 1;  in snd_at73c213_pa_volume_info()
616 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;  in snd_at73c213_line_capture_volume_info()
617 	uinfo->count = 2;  in snd_at73c213_line_capture_volume_info()
619 	uinfo->value.integer.min = 14;  in snd_at73c213_line_capture_volume_info()
620 	uinfo->value.integer.max = 31;  in snd_at73c213_line_capture_volume_info()
629 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;  in snd_at73c213_aux_capture_volume_info()
630 	uinfo->count = 1;  in snd_at73c213_aux_capture_volume_info()
632 	uinfo->value.integer.min = 14;  in snd_at73c213_aux_capture_volume_info()
633 	uinfo->value.integer.max = 31;  in snd_at73c213_aux_capture_volume_info()
711 	if (chip == NULL || chip->pcm == NULL)  in snd_at73c213_mixer()
712 		return -EINVAL;  in snd_at73c213_mixer()
714 	card = chip->card;  in snd_at73c213_mixer()
716 	strcpy(card->mixername, chip->pcm->name);  in snd_at73c213_mixer()
741 	 * Starts on falling TF.  in snd_at73c213_ssc_init()
743 	 * Periode is 16 bit (16 - 1).  in snd_at73c213_ssc_init()
745 	ssc_writel(chip->ssc->regs, TCMR,  in snd_at73c213_ssc_init()
749 			| SSC_BF(TCMR_PERIOD, 16 - 1));  in snd_at73c213_ssc_init()
751 	 * Data length is 16 bit (16 - 1).  in snd_at73c213_ssc_init()
754 	 * Frame sync length is 16 bit (16 - 1).  in snd_at73c213_ssc_init()
755 	 * Frame starts on negative pulse.  in snd_at73c213_ssc_init()
757 	ssc_writel(chip->ssc->regs, TFMR,  in snd_at73c213_ssc_init()
758 			SSC_BF(TFMR_DATLEN, 16 - 1)  in snd_at73c213_ssc_init()
761 			| SSC_BF(TFMR_FSLEN, 16 - 1)  in snd_at73c213_ssc_init()
777 	retval = clk_enable(chip->board->dac_clk);  in snd_at73c213_chip_init()
781 	/* Initialize at73c213 on SPI bus. */  in snd_at73c213_chip_init()
812 	/* Stop precharging DAC, turn on master power. */  in snd_at73c213_chip_init()
819 	/* Turn on DAC. */  in snd_at73c213_chip_init()
851 	ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXEN));  in snd_at73c213_chip_init()
856 	clk_disable(chip->board->dac_clk);  in snd_at73c213_chip_init()
863 	struct snd_at73c213 *chip = device->device_data;  in snd_at73c213_dev_free()
865 	ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS));  in snd_at73c213_dev_free()
866 	if (chip->irq >= 0) {  in snd_at73c213_dev_free()
867 		free_irq(chip->irq, chip);  in snd_at73c213_dev_free()
868 		chip->irq = -1;  in snd_at73c213_dev_free()
883 	irq = chip->ssc->irq;  in snd_at73c213_dev_init()
887 	spin_lock_init(&chip->lock);  in snd_at73c213_dev_init()
888 	mutex_init(&chip->mixer_lock);  in snd_at73c213_dev_init()
889 	chip->card = card;  in snd_at73c213_dev_init()
890 	chip->irq = -1;  in snd_at73c213_dev_init()
892 	retval = clk_enable(chip->ssc->clk);  in snd_at73c213_dev_init()
898 		dev_dbg(&chip->spi->dev, "unable to request irq %d\n", irq);  in snd_at73c213_dev_init()
901 	chip->irq = irq;  in snd_at73c213_dev_init()
903 	memcpy(&chip->reg_image, &snd_at73c213_original_image,  in snd_at73c213_dev_init()
931 	free_irq(chip->irq, chip);  in snd_at73c213_dev_init()
932 	chip->irq = -1;  in snd_at73c213_dev_init()
934 	clk_disable(chip->ssc->clk);  in snd_at73c213_dev_init()
947 	board = spi->dev.platform_data;  in snd_at73c213_probe()
949 		dev_dbg(&spi->dev, "no platform_data\n");  in snd_at73c213_probe()
950 		return -ENXIO;  in snd_at73c213_probe()
953 	if (!board->dac_clk) {  in snd_at73c213_probe()
954 		dev_dbg(&spi->dev, "no DAC clk\n");  in snd_at73c213_probe()
955 		return -ENXIO;  in snd_at73c213_probe()
958 	if (IS_ERR(board->dac_clk)) {  in snd_at73c213_probe()
959 		dev_dbg(&spi->dev, "no DAC clk\n");  in snd_at73c213_probe()
960 		return PTR_ERR(board->dac_clk);  in snd_at73c213_probe()
964 	snprintf(id, sizeof id, "at73c213_%d", board->ssc_id);  in snd_at73c213_probe()
965 	retval = snd_card_new(&spi->dev, -1, id, THIS_MODULE,  in snd_at73c213_probe()
970 	chip = card->private_data;  in snd_at73c213_probe()
971 	chip->spi = spi;  in snd_at73c213_probe()
972 	chip->board = board;  in snd_at73c213_probe()
974 	chip->ssc = ssc_request(board->ssc_id);  in snd_at73c213_probe()
975 	if (IS_ERR(chip->ssc)) {  in snd_at73c213_probe()
976 		dev_dbg(&spi->dev, "could not get ssc%d device\n",  in snd_at73c213_probe()
977 				board->ssc_id);  in snd_at73c213_probe()
978 		retval = PTR_ERR(chip->ssc);  in snd_at73c213_probe()
986 	strcpy(card->driver, "at73c213");  in snd_at73c213_probe()
987 	strcpy(card->shortname, board->shortname);  in snd_at73c213_probe()
988 	sprintf(card->longname, "%s on irq %d", card->shortname, chip->irq);  in snd_at73c213_probe()
994 	dev_set_drvdata(&spi->dev, card);  in snd_at73c213_probe()
999 	ssc_free(chip->ssc);  in snd_at73c213_probe()
1008 	struct snd_card *card = dev_get_drvdata(&spi->dev);  in snd_at73c213_remove()
1009 	struct snd_at73c213 *chip = card->private_data;  in snd_at73c213_remove()
1013 	retval = clk_enable(chip->ssc->clk);  in snd_at73c213_remove()
1016 	ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS));  in snd_at73c213_remove()
1017 	clk_disable(chip->ssc->clk);  in snd_at73c213_remove()
1044 					chip->reg_image[PA_CTRL] | 0x0f);  in snd_at73c213_remove()
1069 	clk_disable(chip->board->dac_clk);  in snd_at73c213_remove()
1071 	ssc_free(chip->ssc);  in snd_at73c213_remove()
1078 	struct snd_at73c213 *chip = card->private_data;  in snd_at73c213_suspend()
1080 	ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS));  in snd_at73c213_suspend()
1081 	clk_disable(chip->ssc->clk);  in snd_at73c213_suspend()
1082 	clk_disable(chip->board->dac_clk);  in snd_at73c213_suspend()
1090 	struct snd_at73c213 *chip = card->private_data;  in snd_at73c213_resume()
1093 	retval = clk_enable(chip->board->dac_clk);  in snd_at73c213_resume()
1096 	retval = clk_enable(chip->ssc->clk);  in snd_at73c213_resume()
1098 		clk_disable(chip->board->dac_clk);  in snd_at73c213_resume()
1101 	ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXEN));  in snd_at73c213_resume()
1120 MODULE_AUTHOR("Hans-Christian Egtvedt <egtvedt@samfundet.no>");
1121 MODULE_DESCRIPTION("Sound driver for AT73C213 with Atmel SSC");