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dmaengine: nbpfaxi: Split device_control 

Split the device_control callback of the NBPF AXI DMA driver to make use
of the newly introduced callbacks, that will eventually be used to retrieve
slave capabilities.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
hifive-unleashed-5.1
Maxime Ripard 2014-11-17 14:42:27 +01:00 committed by Vinod Koul
parent 5c9d2e37ac
commit e22aec0f00
1 changed files with 46 additions and 47 deletions
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93
drivers/dma/nbpfaxi.c
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@ -565,13 +565,6 @@ static void nbpf_configure(struct nbpf_device *nbpf)
nbpf_write(nbpf, NBPF_CTRL, NBPF_CTRL_LVINT);
}
static void nbpf_pause(struct nbpf_channel *chan)
{
nbpf_chan_write(chan, NBPF_CHAN_CTRL, NBPF_CHAN_CTRL_SETSUS);
/* See comment in nbpf_prep_one() */
nbpf_chan_write(chan, NBPF_CHAN_CTRL, NBPF_CHAN_CTRL_CLREN);
}
/* Generic part */
/* DMA ENGINE functions */
@ -837,54 +830,58 @@ static void nbpf_chan_idle(struct nbpf_channel *chan)
}
}
static int nbpf_control(struct dma_chan *dchan, enum dma_ctrl_cmd cmd,
unsigned long arg)
static int nbpf_pause(struct dma_chan *dchan)
{
struct nbpf_channel *chan = nbpf_to_chan(dchan);
struct dma_slave_config *config;
dev_dbg(dchan->device->dev, "Entry %s(%d)\n", __func__, cmd);
dev_dbg(dchan->device->dev, "Entry %s\n", __func__);
switch (cmd) {
case DMA_TERMINATE_ALL:
dev_dbg(dchan->device->dev, "Terminating\n");
nbpf_chan_halt(chan);
nbpf_chan_idle(chan);
break;
chan->paused = true;
nbpf_chan_write(chan, NBPF_CHAN_CTRL, NBPF_CHAN_CTRL_SETSUS);
/* See comment in nbpf_prep_one() */
nbpf_chan_write(chan, NBPF_CHAN_CTRL, NBPF_CHAN_CTRL_CLREN);
case DMA_SLAVE_CONFIG:
if (!arg)
return -EINVAL;
config = (struct dma_slave_config *)arg;
return 0;
}
/*
* We could check config->slave_id to match chan->terminal here,
* but with DT they would be coming from the same source, so
* such a check would be superflous
*/
static int nbpf_terminate_all(struct dma_chan *dchan)
{
struct nbpf_channel *chan = nbpf_to_chan(dchan);
chan->slave_dst_addr = config->dst_addr;
chan->slave_dst_width = nbpf_xfer_size(chan->nbpf,
config->dst_addr_width, 1);
chan->slave_dst_burst = nbpf_xfer_size(chan->nbpf,
config->dst_addr_width,
config->dst_maxburst);
chan->slave_src_addr = config->src_addr;
chan->slave_src_width = nbpf_xfer_size(chan->nbpf,
config->src_addr_width, 1);
chan->slave_src_burst = nbpf_xfer_size(chan->nbpf,
config->src_addr_width,
config->src_maxburst);
break;
dev_dbg(dchan->device->dev, "Entry %s\n", __func__);
dev_dbg(dchan->device->dev, "Terminating\n");
case DMA_PAUSE:
chan->paused = true;
nbpf_pause(chan);
break;
nbpf_chan_halt(chan);
nbpf_chan_idle(chan);
default:
return -ENXIO;
}
return 0;
}
static int nbpf_config(struct dma_chan *dchan,
struct dma_slave_config *config)
{
struct nbpf_channel *chan = nbpf_to_chan(dchan);
dev_dbg(dchan->device->dev, "Entry %s\n", __func__);
/*
* We could check config->slave_id to match chan->terminal here,
* but with DT they would be coming from the same source, so
* such a check would be superflous
*/
chan->slave_dst_addr = config->dst_addr;
chan->slave_dst_width = nbpf_xfer_size(chan->nbpf,
config->dst_addr_width, 1);
chan->slave_dst_burst = nbpf_xfer_size(chan->nbpf,
config->dst_addr_width,
config->dst_maxburst);
chan->slave_src_addr = config->src_addr;
chan->slave_src_width = nbpf_xfer_size(chan->nbpf,
config->src_addr_width, 1);
chan->slave_src_burst = nbpf_xfer_size(chan->nbpf,
config->src_addr_width,
config->src_maxburst);
return 0;
}
@ -1426,7 +1423,9 @@ static int nbpf_probe(struct platform_device *pdev)
/* Compulsory for DMA_SLAVE fields */
dma_dev->device_prep_slave_sg = nbpf_prep_slave_sg;
dma_dev->device_control = nbpf_control;
dma_dev->device_config = nbpf_config;
dma_dev->device_pause = nbpf_pause;
dma_dev->device_terminate_all = nbpf_terminate_all;
platform_set_drvdata(pdev, nbpf);