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authorSia Jee Heng <jee.heng.sia@intel.com>2021-01-25 09:32:43 +0800
committerVinod Koul <vkoul@kernel.org>2021-02-01 15:08:15 +0530
commit66c6c9455efce0185911d7befb14992122c99474 (patch)
tree0e417892e72096b093cba2f74f48af8cde9307ae /drivers/dma
parent67b2e39f4acb764cbc0ab9b2af07b18aec7b2cce (diff)
dmaengine: dw-axi-dmac: Add device_config operation
Add device_config() callback function so that the device address can be passed to the dma driver. DMA clients use this interface to pass in the device address to the AxiDMA. Without this interface, data transfer between device to memory and memory to device would failed. Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com> Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Link: https://lore.kernel.org/r/20210125013255.25799-6-jee.heng.sia@intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c11
-rw-r--r--drivers/dma/dw-axi-dmac/dw-axi-dmac.h1
2 files changed, 12 insertions, 0 deletions
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 241ab7a24e2a..eaa7c4c404ca 100644
--- a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
+++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
@@ -559,6 +559,16 @@ err_desc_get:
return NULL;
}
+static int dw_axi_dma_chan_slave_config(struct dma_chan *dchan,
+ struct dma_slave_config *config)
+{
+ struct axi_dma_chan *chan = dchan_to_axi_dma_chan(dchan);
+
+ memcpy(&chan->config, config, sizeof(*config));
+
+ return 0;
+}
+
static void axi_chan_dump_lli(struct axi_dma_chan *chan,
struct axi_dma_hw_desc *desc)
{
@@ -948,6 +958,7 @@ static int dw_probe(struct platform_device *pdev)
dw->dma.device_prep_dma_memcpy = dma_chan_prep_dma_memcpy;
dw->dma.device_synchronize = dw_axi_dma_synchronize;
+ dw->dma.device_config = dw_axi_dma_chan_slave_config;
platform_set_drvdata(pdev, chip);
diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac.h b/drivers/dma/dw-axi-dmac/dw-axi-dmac.h
index f886b2bb75de..a75b921d6b1a 100644
--- a/drivers/dma/dw-axi-dmac/dw-axi-dmac.h
+++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac.h
@@ -43,6 +43,7 @@ struct axi_dma_chan {
struct virt_dma_chan vc;
struct axi_dma_desc *desc;
+ struct dma_slave_config config;
/* these other elements are all protected by vc.lock */
bool is_paused;
};