[PATCH v5 2/3] dmaengine: add peripheral configuration

From: Vinod Koul <vkoul@kernel.org>
To: dmaengine@vger.kernel.org
Cc: Vinod Koul <vkoul@kernel.org>, Rob Herring <robh+dt@kernel.org>,
	Bjorn Andersson <bjorn.andersson@linaro.org>,
	linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Peter Ujfalusi <peter.ujfalusi@ti.com>
Subject: [PATCH v5 2/3] dmaengine: add peripheral configuration
Date: Tue,  3 Nov 2020 16:55:43 +0530	[thread overview]
Message-ID: <20201103112544.674566-3-vkoul@kernel.org> (raw)
In-Reply-To: <20201103112544.674566-1-vkoul@kernel.org>

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(+)

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;
 };
 
 /**
-- 
2.26.2

