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[v6,2/3] dmaengine: add peripheral configuration

Message ID 20201109085450.24843-3-vkoul@kernel.org
State Accepted
Commit e7bbb7acabf47d74672e0e314bed4d452d2097b4
Headers show
Series dmaengine: Add support for QCOM GSI dma controller | expand

Commit Message

Vinod Koul Nov. 9, 2020, 8:54 a.m. UTC 
Some complex dmaengine controllers have capability to program the
peripheral device, so pass on the peripheral configuration as part of
dma_slave_config

Signed-off-by: Vinod Koul <vkoul@kernel.org>

---
 include/linux/dmaengine.h | 5 +++++
 1 file changed, 5 insertions(+)

-- 
2.26.2
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Patch

diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index dd357a747780..493a047ed0a2 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -418,6 +418,9 @@  enum dma_slave_buswidth {
  * @slave_id: Slave requester id. Only valid for slave channels. The dma
  * slave peripheral will have unique id as dma requester which need to be
  * pass as slave config.
+ * @peripheral_config: peripheral configuration for programming peripheral
+ * for dmaengine transfer
+ * @peripheral_size: peripheral configuration buffer size
  *
  * This struct is passed in as configuration data to a DMA engine
  * in order to set up a certain channel for DMA transport at runtime.
@@ -443,6 +446,8 @@  struct dma_slave_config {
 	u32 dst_port_window_size;
 	bool device_fc;
 	unsigned int slave_id;
+	void *peripheral_config;
+	size_t peripheral_size;
 };
 
 /**