Lines Matching +full:ssc +full:- +full:on

1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * atmel-pcm-dma.c  --  ALSA PCM DMA support for the Atmel SoC.
9  * Based on atmel-pcm by:
18 #include <linux/dma-mapping.h>
20 #include <linux/atmel-ssc.h>
28 #include "atmel-pcm.h"
30 /*--------------------------------------------------------------------------*\
32 \*--------------------------------------------------------------------------*/
47  * atmel_pcm_dma_irq: SSC interrupt handler for DMAENGINE enabled SSC
49  * We use DMAENGINE to send/receive data to/from SSC so this ISR is only to
60 	if (ssc_sr & prtd->mask->ssc_error) {  in atmel_pcm_dma_irq()
62 			pr_warn("atmel-pcm: buffer %s on %s (SSC_SR=%#x)\n",  in atmel_pcm_dma_irq()
63 				substream->stream == SNDRV_PCM_STREAM_PLAYBACK  in atmel_pcm_dma_irq()
64 				? "underrun" : "overrun", prtd->name,  in atmel_pcm_dma_irq()
68 		ssc_writex(prtd->ssc->regs, SSC_CR, prtd->mask->ssc_disable);  in atmel_pcm_dma_irq()
72 		ssc_readx(prtd->ssc->regs, SSC_RHR);  in atmel_pcm_dma_irq()
73 		ssc_readx(prtd->ssc->regs, SSC_SR);  in atmel_pcm_dma_irq()
82 	struct ssc_device *ssc;  in atmel_pcm_configure_dma()  local
86 	ssc = prtd->ssc;  in atmel_pcm_configure_dma()
90 		pr_err("atmel-pcm: hwparams to dma slave configure failed\n");  in atmel_pcm_configure_dma()
94 	slave_config->dst_addr = ssc->phybase + SSC_THR;  in atmel_pcm_configure_dma()
95 	slave_config->dst_maxburst = 1;  in atmel_pcm_configure_dma()
97 	slave_config->src_addr = ssc->phybase + SSC_RHR;  in atmel_pcm_configure_dma()
98 	slave_config->src_maxburst = 1;  in atmel_pcm_configure_dma()
100 	prtd->dma_intr_handler = atmel_pcm_dma_irq;  in atmel_pcm_configure_dma()