diff options
Diffstat (limited to 'drivers/dma/mmp_pdma.c')
| -rw-r--r-- | drivers/dma/mmp_pdma.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/drivers/dma/mmp_pdma.c b/drivers/dma/mmp_pdma.c index eb75d4b4bafe..dd024d4759e7 100644 --- a/drivers/dma/mmp_pdma.c +++ b/drivers/dma/mmp_pdma.c @@ -19,6 +19,7 @@ #include <linux/dmapool.h> #include <linux/of_device.h> #include <linux/of.h> +#include <linux/dma/mmp-pdma.h> #include "dmaengine.h" @@ -635,8 +636,13 @@ static int mmp_pdma_control(struct dma_chan *dchan, enum dma_ctrl_cmd cmd, chan->dcmd |= DCMD_BURST32; chan->dir = cfg->direction; - chan->drcmr = cfg->slave_id; chan->dev_addr = addr; + /* FIXME: drivers should be ported over to use the filter + * function. Once that's done, the following two lines can + * be removed. + */ + if (cfg->slave_id) + chan->drcmr = cfg->slave_id; break; default: return -ENOSYS; @@ -877,6 +883,19 @@ static struct platform_driver mmp_pdma_driver = { .remove = mmp_pdma_remove, }; +bool mmp_pdma_filter_fn(struct dma_chan *chan, void *param) +{ + struct mmp_pdma_chan *c = to_mmp_pdma_chan(chan); + + if (chan->device->dev->driver != &mmp_pdma_driver.driver) + return false; + + c->drcmr = *(unsigned int *) param; + + return true; +} +EXPORT_SYMBOL_GPL(mmp_pdma_filter_fn); + module_platform_driver(mmp_pdma_driver); MODULE_DESCRIPTION("MARVELL MMP Periphera DMA Driver"); |