113 	struct atmel_abdac *dac = arg;  in atmel_abdac_dma_period_done()  local
114 	snd_pcm_period_elapsed(dac->substream);  in atmel_abdac_dma_period_done()
117 static int atmel_abdac_prepare_dma(struct atmel_abdac *dac,  in atmel_abdac_prepare_dma()  argument
121 	struct dma_chan			*chan = dac->dma.chan;  in atmel_abdac_prepare_dma()
131 		dev_dbg(&dac->pdev->dev, "too complex transfer\n");  in atmel_abdac_prepare_dma()
141 		dev_dbg(&dac->pdev->dev, "could not prepare cyclic DMA\n");  in atmel_abdac_prepare_dma()
146 	cdesc->period_callback_param = dac;  in atmel_abdac_prepare_dma()
148 	dac->dma.cdesc = cdesc;  in atmel_abdac_prepare_dma()
150 	set_bit(DMA_READY, &dac->flags);  in atmel_abdac_prepare_dma()
177 	struct atmel_abdac *dac = snd_pcm_substream_chip(substream);  in atmel_abdac_open()  local
179 	dac->substream = substream;  in atmel_abdac_open()
180 	atmel_abdac_hw.rate_max = dac->rates[dac->rates_num - 1];  in atmel_abdac_open()
181 	atmel_abdac_hw.rate_min = dac->rates[0];  in atmel_abdac_open()
185 			SNDRV_PCM_HW_PARAM_RATE, &dac->constraints_rates);  in atmel_abdac_open()
190 	struct atmel_abdac *dac = snd_pcm_substream_chip(substream);  in atmel_abdac_close()  local
191 	dac->substream = NULL;  in atmel_abdac_close()
198 	struct atmel_abdac *dac = snd_pcm_substream_chip(substream);  in atmel_abdac_hw_params()  local
207 		if (test_and_clear_bit(DMA_READY, &dac->flags))  in atmel_abdac_hw_params()
208 			dw_dma_cyclic_free(dac->dma.chan);  in atmel_abdac_hw_params()
215 	struct atmel_abdac *dac = snd_pcm_substream_chip(substream);  in atmel_abdac_hw_free()  local
216 	if (test_and_clear_bit(DMA_READY, &dac->flags))  in atmel_abdac_hw_free()
217 		dw_dma_cyclic_free(dac->dma.chan);  in atmel_abdac_hw_free()
223 	struct atmel_abdac *dac = snd_pcm_substream_chip(substream);  in atmel_abdac_prepare()  local
226 	retval = clk_set_rate(dac->sample_clk, 256 * substream->runtime->rate);  in atmel_abdac_prepare()
230 	if (!test_bit(DMA_READY, &dac->flags))  in atmel_abdac_prepare()
231 		retval = atmel_abdac_prepare_dma(dac, substream, DMA_TO_DEVICE);  in atmel_abdac_prepare()
238 	struct atmel_abdac *dac = snd_pcm_substream_chip(substream);  in atmel_abdac_trigger()  local
245 		clk_prepare_enable(dac->sample_clk);  in atmel_abdac_trigger()
246 		retval = dw_dma_cyclic_start(dac->dma.chan);  in atmel_abdac_trigger()
249 		dac_writel(dac, CTRL, DAC_BIT(EN));  in atmel_abdac_trigger()
254 		dw_dma_cyclic_stop(dac->dma.chan);  in atmel_abdac_trigger()
255 		dac_writel(dac, DATA, 0);  in atmel_abdac_trigger()
256 		dac_writel(dac, CTRL, 0);  in atmel_abdac_trigger()
257 		clk_disable_unprepare(dac->sample_clk);  in atmel_abdac_trigger()
270 	struct atmel_abdac	*dac = snd_pcm_substream_chip(substream);  in atmel_abdac_pointer()  local
275 	bytes = dw_dma_get_src_addr(dac->dma.chan);  in atmel_abdac_pointer()
287 	struct atmel_abdac *dac = dev_id;  in abdac_interrupt()  local
290 	status = dac_readl(dac, INT_STATUS);  in abdac_interrupt()
292 		dev_err(&dac->pdev->dev, "underrun detected\n");  in abdac_interrupt()
293 		dac_writel(dac, INT_CLR, DAC_BIT(UNDERRUN));  in abdac_interrupt()
295 		dev_err(&dac->pdev->dev, "spurious interrupt (status=0x%x)\n",  in abdac_interrupt()
297 		dac_writel(dac, INT_CLR, status);  in abdac_interrupt()
314 static int atmel_abdac_pcm_new(struct atmel_abdac *dac)  in atmel_abdac_pcm_new()  argument
320 	retval = snd_pcm_new(dac->card, dac->card->shortname,  in atmel_abdac_pcm_new()
321 			dac->pdev->id, 1, 0, &pcm);  in atmel_abdac_pcm_new()
325 	strcpy(pcm->name, dac->card->shortname);  in atmel_abdac_pcm_new()
326 	pcm->private_data = dac;  in atmel_abdac_pcm_new()
328 	dac->pcm = pcm;  in atmel_abdac_pcm_new()
333 			&dac->pdev->dev, hw.periods_min * hw.period_bytes_min,  in atmel_abdac_pcm_new()
350 static int set_sample_rates(struct atmel_abdac *dac)  in set_sample_rates()  argument
358 		new_rate = clk_round_rate(dac->sample_clk, 256 * new_rate);  in set_sample_rates()
363 		    new_rate <= clk_get_rate(dac->pclk)) {  in set_sample_rates()
364 			dac->rates[index] = new_rate / 256;  in set_sample_rates()
376 			unsigned int tmp = dac->rates[index - 1 - i];  in set_sample_rates()
377 			dac->rates[index - 1 - i] = dac->rates[i];  in set_sample_rates()
378 			dac->rates[i] = tmp;  in set_sample_rates()
381 		dac->constraints_rates.count = index;  in set_sample_rates()
382 		dac->constraints_rates.list = dac->rates;  in set_sample_rates()
383 		dac->constraints_rates.mask = 0;  in set_sample_rates()
384 		dac->rates_num = index;  in set_sample_rates()
395 	struct atmel_abdac	*dac;  in atmel_abdac_probe()  local
442 	dac = get_dac(card);  in atmel_abdac_probe()
444 	dac->irq = irq;  in atmel_abdac_probe()
445 	dac->card = card;  in atmel_abdac_probe()
446 	dac->pclk = pclk;  in atmel_abdac_probe()
447 	dac->sample_clk = sample_clk;  in atmel_abdac_probe()
448 	dac->pdev = pdev;  in atmel_abdac_probe()
450 	retval = set_sample_rates(dac);  in atmel_abdac_probe()
456 	dac->regs = ioremap(regs->start, resource_size(regs));  in atmel_abdac_probe()
457 	if (!dac->regs) {  in atmel_abdac_probe()
464 	dac_writel(dac, DATA, 0);  in atmel_abdac_probe()
465 	dac_writel(dac, CTRL, 0);  in atmel_abdac_probe()
467 	retval = request_irq(irq, abdac_interrupt, 0, "abdac", dac);  in atmel_abdac_probe()
479 		dac->dma.chan = dma_request_channel(mask, filter, &pdata->dws);  in atmel_abdac_probe()
480 		if (dac->dma.chan) {  in atmel_abdac_probe()
490 			dmaengine_slave_config(dac->dma.chan, &dma_conf);  in atmel_abdac_probe()
493 	if (!pdata->dws.dma_dev || !dac->dma.chan) {  in atmel_abdac_probe()
503 	retval = atmel_abdac_pcm_new(dac);  in atmel_abdac_probe()
518 			dac->regs, dev_name(&dac->dma.chan->dev->device));  in atmel_abdac_probe()
523 	dma_release_channel(dac->dma.chan);  in atmel_abdac_probe()
524 	dac->dma.chan = NULL;  in atmel_abdac_probe()
526 	iounmap(dac->regs);  in atmel_abdac_probe()
541 	struct atmel_abdac *dac = card->private_data;  in atmel_abdac_suspend()  local
543 	dw_dma_cyclic_stop(dac->dma.chan);  in atmel_abdac_suspend()
544 	clk_disable_unprepare(dac->sample_clk);  in atmel_abdac_suspend()
545 	clk_disable_unprepare(dac->pclk);  in atmel_abdac_suspend()
553 	struct atmel_abdac *dac = card->private_data;  in atmel_abdac_resume()  local
555 	clk_prepare_enable(dac->pclk);  in atmel_abdac_resume()
556 	clk_prepare_enable(dac->sample_clk);  in atmel_abdac_resume()
557 	if (test_bit(DMA_READY, &dac->flags))  in atmel_abdac_resume()
558 		dw_dma_cyclic_start(dac->dma.chan);  in atmel_abdac_resume()
572 	struct atmel_abdac *dac = get_dac(card);  in atmel_abdac_remove()  local
574 	clk_put(dac->sample_clk);  in atmel_abdac_remove()
575 	clk_disable_unprepare(dac->pclk);  in atmel_abdac_remove()
576 	clk_put(dac->pclk);  in atmel_abdac_remove()
578 	dma_release_channel(dac->dma.chan);  in atmel_abdac_remove()
579 	dac->dma.chan = NULL;  in atmel_abdac_remove()
580 	iounmap(dac->regs);  in atmel_abdac_remove()
581 	free_irq(dac->irq, dac);  in atmel_abdac_remove()