[PATCH v12 04/17] dmaengine: dw-axi-dmac: Add device_synchronize() callback
From: Sia Jee Heng <hidden>
Date: 2021-01-25 02:24:57
Also in:
linux-devicetree, lkml
Subsystem:
dma generic offload engine subsystem, synopsys designware axi dmac driver, the rest · Maintainers:
Vinod Koul, Eugeniy Paltsev, Linus Torvalds
Add support for device_synchronize() callback function to sync with dmaengine_terminate_sync(). Signed-off-by: Sia Jee Heng <redacted> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> --- drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
index 3737e1c3c793..241ab7a24e2a 100644
--- a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
+++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c@@ -347,6 +347,13 @@ static void dma_chan_issue_pending(struct dma_chan *dchan) spin_unlock_irqrestore(&chan->vc.lock, flags); } +static void dw_axi_dma_synchronize(struct dma_chan *dchan) +{ + struct axi_dma_chan *chan = dchan_to_axi_dma_chan(dchan); + + vchan_synchronize(&chan->vc); +} + static int dma_chan_alloc_chan_resources(struct dma_chan *dchan) { struct axi_dma_chan *chan = dchan_to_axi_dma_chan(dchan);
@@ -940,6 +947,7 @@ static int dw_probe(struct platform_device *pdev) dw->dma.device_free_chan_resources = dma_chan_free_chan_resources; dw->dma.device_prep_dma_memcpy = dma_chan_prep_dma_memcpy; + dw->dma.device_synchronize = dw_axi_dma_synchronize; platform_set_drvdata(pdev, chip);
--
2.18.0