From d65a14587a9be853a887a1407db133df1fb68e29 Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Mon, 12 Aug 2013 10:42:39 +0200 Subject: ASoC: pxa: use snd_dmaengine_dai_dma_data Use snd_dmaengine_dai_dma_data for passing the dma parameters from clients to the pxa pcm lib. This does no functional change, it's just an intermedia step to migrate the pxa bits over to dmaengine. The calculation of dcmd is a transition hack which will be removed again in a later patch. It's just there to make the transition more readable. Signed-off-by: Daniel Mack Acked-by: Mark Brown Signed-off-by: Mark Brown --- sound/arm/pxa2xx-pcm-lib.c | 52 ++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 43 insertions(+), 9 deletions(-) (limited to 'sound/arm/pxa2xx-pcm-lib.c') diff --git a/sound/arm/pxa2xx-pcm-lib.c b/sound/arm/pxa2xx-pcm-lib.c index 823359ed95e1..a61d7a9a995e 100644 --- a/sound/arm/pxa2xx-pcm-lib.c +++ b/sound/arm/pxa2xx-pcm-lib.c @@ -7,11 +7,13 @@ #include #include #include +#include #include #include #include #include +#include #include @@ -43,6 +45,35 @@ int __pxa2xx_pcm_hw_params(struct snd_pcm_substream *substream, size_t period = params_period_bytes(params); pxa_dma_desc *dma_desc; dma_addr_t dma_buff_phys, next_desc_phys; + u32 dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG; + + /* temporary transition hack */ + switch (rtd->params->addr_width) { + case DMA_SLAVE_BUSWIDTH_1_BYTE: + dcmd |= DCMD_WIDTH1; + break; + case DMA_SLAVE_BUSWIDTH_2_BYTES: + dcmd |= DCMD_WIDTH2; + break; + case DMA_SLAVE_BUSWIDTH_4_BYTES: + dcmd |= DCMD_WIDTH4; + break; + default: + /* can't happen */ + break; + } + + switch (rtd->params->maxburst) { + case 8: + dcmd |= DCMD_BURST8; + break; + case 16: + dcmd |= DCMD_BURST16; + break; + case 32: + dcmd |= DCMD_BURST32; + break; + } snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer); runtime->dma_bytes = totsize; @@ -55,14 +86,14 @@ int __pxa2xx_pcm_hw_params(struct snd_pcm_substream *substream, dma_desc->ddadr = next_desc_phys; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { dma_desc->dsadr = dma_buff_phys; - dma_desc->dtadr = rtd->params->dev_addr; + dma_desc->dtadr = rtd->params->addr; } else { - dma_desc->dsadr = rtd->params->dev_addr; + dma_desc->dsadr = rtd->params->addr; dma_desc->dtadr = dma_buff_phys; } if (period > totsize) period = totsize; - dma_desc->dcmd = rtd->params->dcmd | period | DCMD_ENDIRQEN; + dma_desc->dcmd = dcmd | period | DCMD_ENDIRQEN; dma_desc++; dma_buff_phys += period; } while (totsize -= period); @@ -76,8 +107,10 @@ int __pxa2xx_pcm_hw_free(struct snd_pcm_substream *substream) { struct pxa2xx_runtime_data *rtd = substream->runtime->private_data; - if (rtd && rtd->params && rtd->params->drcmr) - *rtd->params->drcmr = 0; + if (rtd && rtd->params && rtd->params->filter_data) { + unsigned long req = *(unsigned long *) rtd->params->filter_data; + DRCMR(req) = 0; + } snd_pcm_set_runtime_buffer(substream, NULL); return 0; @@ -136,6 +169,7 @@ EXPORT_SYMBOL(pxa2xx_pcm_pointer); int __pxa2xx_pcm_prepare(struct snd_pcm_substream *substream) { struct pxa2xx_runtime_data *prtd = substream->runtime->private_data; + unsigned long req; if (!prtd || !prtd->params) return 0; @@ -146,7 +180,8 @@ int __pxa2xx_pcm_prepare(struct snd_pcm_substream *substream) DCSR(prtd->dma_ch) &= ~DCSR_RUN; DCSR(prtd->dma_ch) = 0; DCMD(prtd->dma_ch) = 0; - *prtd->params->drcmr = prtd->dma_ch | DRCMR_MAPVLD; + req = *(unsigned long *) prtd->params->filter_data; + DRCMR(req) = prtd->dma_ch | DRCMR_MAPVLD; return 0; } @@ -155,7 +190,6 @@ EXPORT_SYMBOL(__pxa2xx_pcm_prepare); void pxa2xx_pcm_dma_irq(int dma_ch, void *dev_id) { struct snd_pcm_substream *substream = dev_id; - struct pxa2xx_runtime_data *rtd = substream->runtime->private_data; int dcsr; dcsr = DCSR(dma_ch); @@ -164,8 +198,8 @@ void pxa2xx_pcm_dma_irq(int dma_ch, void *dev_id) if (dcsr & DCSR_ENDINTR) { snd_pcm_period_elapsed(substream); } else { - printk(KERN_ERR "%s: DMA error on channel %d (DCSR=%#x)\n", - rtd->params->name, dma_ch, dcsr); + printk(KERN_ERR "DMA error on channel %d (DCSR=%#x)\n", + dma_ch, dcsr); snd_pcm_stream_lock(substream); snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); snd_pcm_stream_unlock(substream); -- cgit v1.2.3