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dmaengine: omap: Split device_control

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Split the device_control callback of the TI OMAP 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>
This commit is contained in:
Maxime Ripard 2014-11-17 14:42:28 +01:00 committed by Vinod Koul
parent e22aec0f00
commit 78ea4fe7e7
1 changed files with 15 additions and 36 deletions
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51
drivers/dma/omap-dma.c
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@ -948,8 +948,10 @@ static struct dma_async_tx_descriptor *omap_dma_prep_dma_cyclic(
return vchan_tx_prep(&c->vc, &d->vd, flags);
}
static int omap_dma_slave_config(struct omap_chan *c, struct dma_slave_config *cfg)
static int omap_dma_slave_config(struct dma_chan *chan, struct dma_slave_config *cfg)
{
struct omap_chan *c = to_omap_dma_chan(chan);
if (cfg->src_addr_width == DMA_SLAVE_BUSWIDTH_8_BYTES ||
cfg->dst_addr_width == DMA_SLAVE_BUSWIDTH_8_BYTES)
return -EINVAL;
@ -959,8 +961,9 @@ static int omap_dma_slave_config(struct omap_chan *c, struct dma_slave_config *c
return 0;
}
static int omap_dma_terminate_all(struct omap_chan *c)
static int omap_dma_terminate_all(struct dma_chan *chan)
{
struct omap_chan *c = to_omap_dma_chan(chan);
struct omap_dmadev *d = to_omap_dma_dev(c->vc.chan.device);
unsigned long flags;
LIST_HEAD(head);
@ -996,8 +999,10 @@ static int omap_dma_terminate_all(struct omap_chan *c)
return 0;
}
static int omap_dma_pause(struct omap_chan *c)
static int omap_dma_pause(struct dma_chan *chan)
{
struct omap_chan *c = to_omap_dma_chan(chan);
/* Pause/Resume only allowed with cyclic mode */
if (!c->cyclic)
return -EINVAL;
@ -1010,8 +1015,10 @@ static int omap_dma_pause(struct omap_chan *c)
return 0;
}
static int omap_dma_resume(struct omap_chan *c)
static int omap_dma_resume(struct dma_chan *chan)
{
struct omap_chan *c = to_omap_dma_chan(chan);
/* Pause/Resume only allowed with cyclic mode */
if (!c->cyclic)
return -EINVAL;
@ -1029,37 +1036,6 @@ static int omap_dma_resume(struct omap_chan *c)
return 0;
}
static int omap_dma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
unsigned long arg)
{
struct omap_chan *c = to_omap_dma_chan(chan);
int ret;
switch (cmd) {
case DMA_SLAVE_CONFIG:
ret = omap_dma_slave_config(c, (struct dma_slave_config *)arg);
break;
case DMA_TERMINATE_ALL:
ret = omap_dma_terminate_all(c);
break;
case DMA_PAUSE:
ret = omap_dma_pause(c);
break;
case DMA_RESUME:
ret = omap_dma_resume(c);
break;
default:
ret = -ENXIO;
break;
}
return ret;
}
static int omap_dma_chan_init(struct omap_dmadev *od, int dma_sig)
{
struct omap_chan *c;
@ -1136,7 +1112,10 @@ static int omap_dma_probe(struct platform_device *pdev)
od->ddev.device_issue_pending = omap_dma_issue_pending;
od->ddev.device_prep_slave_sg = omap_dma_prep_slave_sg;
od->ddev.device_prep_dma_cyclic = omap_dma_prep_dma_cyclic;
od->ddev.device_control = omap_dma_control;
od->ddev.device_config = omap_dma_config;
od->ddev.device_pause = omap_dma_pause;
od->ddev.device_resume = omap_dma_resume;
od->ddev.device_terminate_all = omap_dma_terminate_all;
od->ddev.device_slave_caps = omap_dma_device_slave_caps;
od->ddev.dev = &pdev->dev;
INIT_LIST_HEAD(&od->ddev.channels);