提交 1d0c1d60 编写于 作者: B Boojin Kim 提交者: Vinod Koul

DMA: PL330: Support DMA_SLAVE_CONFIG command

Signed-off-by: NBoojin Kim <boojin.kim@samsung.com>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Acked-by: NVinod Koul <vinod.koul@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
上级 1b9bb715
......@@ -73,6 +73,7 @@ struct dma_pl330_chan {
/* For D-to-M and M-to-D channels */
int burst_sz; /* the peripheral fifo width */
int burst_len; /* the number of burst */
dma_addr_t fifo_addr;
};
......@@ -263,23 +264,47 @@ static int pl330_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, unsigned
struct dma_pl330_chan *pch = to_pchan(chan);
struct dma_pl330_desc *desc;
unsigned long flags;
struct dma_pl330_dmac *pdmac = pch->dmac;
struct dma_slave_config *slave_config;
/* Only supports DMA_TERMINATE_ALL */
if (cmd != DMA_TERMINATE_ALL)
return -ENXIO;
switch (cmd) {
case DMA_TERMINATE_ALL:
spin_lock_irqsave(&pch->lock, flags);
spin_lock_irqsave(&pch->lock, flags);
/* FLUSH the PL330 Channel thread */
pl330_chan_ctrl(pch->pl330_chid, PL330_OP_FLUSH);
/* FLUSH the PL330 Channel thread */
pl330_chan_ctrl(pch->pl330_chid, PL330_OP_FLUSH);
/* Mark all desc done */
list_for_each_entry(desc, &pch->work_list, node)
desc->status = DONE;
/* Mark all desc done */
list_for_each_entry(desc, &pch->work_list, node)
desc->status = DONE;
spin_unlock_irqrestore(&pch->lock, flags);
spin_unlock_irqrestore(&pch->lock, flags);
pl330_tasklet((unsigned long) pch);
pl330_tasklet((unsigned long) pch);
break;
case DMA_SLAVE_CONFIG:
slave_config = (struct dma_slave_config *)arg;
if (slave_config->direction == DMA_TO_DEVICE) {
if (slave_config->dst_addr)
pch->fifo_addr = slave_config->dst_addr;
if (slave_config->dst_addr_width)
pch->burst_sz = __ffs(slave_config->dst_addr_width);
if (slave_config->dst_maxburst)
pch->burst_len = slave_config->dst_maxburst;
} else if (slave_config->direction == DMA_FROM_DEVICE) {
if (slave_config->src_addr)
pch->fifo_addr = slave_config->src_addr;
if (slave_config->src_addr_width)
pch->burst_sz = __ffs(slave_config->src_addr_width);
if (slave_config->src_maxburst)
pch->burst_len = slave_config->src_maxburst;
}
break;
default:
dev_err(pch->dmac->pif.dev, "Not supported command.\n");
return -ENXIO;
}
return 0;
}
......
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