diff options
| author | M'boumba Cedric Madianga <cedric.madianga@gmail.com> | 2016-12-13 16:40:50 +0300 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2017-01-03 06:53:23 +0300 |
| commit | dc808675104b920f2be1ac4bf1e9aa57680f0699 (patch) | |
| tree | a73040332886eeaa490a3b7d9f9fc8f8998fe0b2 /drivers/dma | |
| parent | 2b12c5580e0a4c0ffd513d1522dd39b2464fb207 (diff) | |
| download | linux-dc808675104b920f2be1ac4bf1e9aa57680f0699.tar.xz | |
dmaengine: stm32-dma: Add synchronization support
Implement the new device_synchronize() callback to allow proper
synchronization when stopping a channel.
Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/stm32-dma.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/dma/stm32-dma.c b/drivers/dma/stm32-dma.c index 8a29b028d39e..53b2ee79cc0e 100644 --- a/drivers/dma/stm32-dma.c +++ b/drivers/dma/stm32-dma.c @@ -403,6 +403,13 @@ static int stm32_dma_terminate_all(struct dma_chan *c) return 0; } +static void stm32_dma_synchronize(struct dma_chan *c) +{ + struct stm32_dma_chan *chan = to_stm32_dma_chan(c); + + vchan_synchronize(&chan->vchan); +} + static void stm32_dma_dump_reg(struct stm32_dma_chan *chan) { struct stm32_dma_device *dmadev = stm32_dma_get_dev(chan); @@ -1066,6 +1073,7 @@ static int stm32_dma_probe(struct platform_device *pdev) dd->device_prep_dma_cyclic = stm32_dma_prep_dma_cyclic; dd->device_config = stm32_dma_slave_config; dd->device_terminate_all = stm32_dma_terminate_all; + dd->device_synchronize = stm32_dma_synchronize; dd->src_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) | BIT(DMA_SLAVE_BUSWIDTH_4_BYTES); |