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authorMaxime Ripard <maxime.ripard@free-electrons.com>2014-11-17 14:42:27 +0100
committerVinod Koul <vinod.koul@intel.com>2014-12-22 12:29:06 +0530
commite22aec0f0072164e7a2243059715c92ff56016c6 (patch)
tree2453c9bde009cceaf53e43789b16073a6bb51900 /drivers/dma/nbpfaxi.c
parent5c9d2e37ac2bce248e351a7cd784e7c56dffb8e8 (diff)
downloadlinux-e22aec0f0072164e7a2243059715c92ff56016c6.tar.bz2
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>
Diffstat (limited to 'drivers/dma/nbpfaxi.c')
-rw-r--r--drivers/dma/nbpfaxi.c93
1 files changed, 46 insertions, 47 deletions
diff --git a/drivers/dma/nbpfaxi.c b/drivers/dma/nbpfaxi.c
index 3d993e785180..0202602597f7 100644
--- a/drivers/dma/nbpfaxi.c
+++ b/drivers/dma/nbpfaxi.c
@@ -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);