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From: Sireesh Kodali <sireeshkodali1@gmail.com>
To: vkoul@kernel.org, linux-kernel@vger.kernel.org,
	linux-doc@vger.kernel.org, linux-arm-msm@vger.kernel.org
Cc: dmaengine@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht,
	Sireesh Kodali <sireeshkodali1@gmail.com>
Subject: [PATCH v2 2/3] dmaengine: Add support for immediate commands in the client API
Date: Thu, 27 Oct 2022 10:44:28 +0530	[thread overview]
Message-ID: <20221027051429.46593-3-sireeshkodali1@gmail.com> (raw)
In-Reply-To: <20221027051429.46593-1-sireeshkodali1@gmail.com>

Immediate commands are needed by the IPA network driver, so that it can
send commands via BAM to the IPA microcontroller.

Signed-off-by: Sireesh Kodali <sireeshkodali1@gmail.com>
---
 include/linux/dmaengine.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index c923f4e60f24..8da96bb50a63 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -190,6 +190,9 @@ struct dma_interleaved_template {
  *  transaction is marked with DMA_PREP_REPEAT will cause the new transaction
  *  to never be processed and stay in the issued queue forever. The flag is
  *  ignored if the previous transaction is not a repeated transaction.
+ *  @DMA_PREP_IMM_CMD: tell the driver that the data passed to the DMA API is
+ *  immediate command data and the descriptor should be in a different format
+ *  from the normal data and descriptor
  */
 enum dma_ctrl_flags {
 	DMA_PREP_INTERRUPT = (1 << 0),
@@ -202,6 +205,7 @@ enum dma_ctrl_flags {
 	DMA_PREP_CMD = (1 << 7),
 	DMA_PREP_REPEAT = (1 << 8),
 	DMA_PREP_LOAD_EOT = (1 << 9),
+	DMA_PREP_IMM_CMD = (1 << 10),
 };
 
 /**
-- 
2.38.1


  parent reply	other threads:[~2022-10-27  5:14 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-27  5:14 [PATCH v2 0/3] dmaengine: Add support for immediate commands Sireesh Kodali
2022-10-27  5:14 ` [PATCH v2 1/3] doc: dmaengine: client-api: Add immediate commands in the DMA client API Sireesh Kodali
2022-10-27  5:14 ` Sireesh Kodali [this message]
2022-10-27  5:14 ` [PATCH v2 3/3] dmaengine: bam_dma: Add support for immediate commands Sireesh Kodali
2022-11-04 12:40 ` [PATCH v2 0/3] dmaengine: " Vinod Koul
2022-11-11  5:12   ` Sireesh Kodali
2022-11-13 22:23     ` Vinod Koul
2022-11-24  3:14       ` Sireesh Kodali
2022-11-25 16:50       ` Sireesh Kodali

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