From: Amelie Delaunay <amelie.delaunay@st.com>
To: Vinod Koul <vkoul@kernel.org>,
Dan Williams <dan.j.williams@intel.com>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@st.com>
Cc: Amelie Delaunay <amelie.delaunay@st.com>,
linux-kernel@vger.kernel.org,
Pierre-Yves MORDRET <pierre-yves.mordret@st.com>,
dmaengine@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH 5/6] dmaengine: stm32-mdma: enable descriptor_reuse
Date: Mon, 27 Jan 2020 09:53:33 +0100 [thread overview]
Message-ID: <20200127085334.13163-6-amelie.delaunay@st.com> (raw)
In-Reply-To: <20200127085334.13163-1-amelie.delaunay@st.com>
From: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Enable descriptor reuse to allow client to resubmit already processed
descriptors in order to save descriptor creation time.
Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
---
drivers/dma/stm32-mdma.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/dma/stm32-mdma.c b/drivers/dma/stm32-mdma.c
index 2dbd1f38a6f5..f2043f47ae9e 100644
--- a/drivers/dma/stm32-mdma.c
+++ b/drivers/dma/stm32-mdma.c
@@ -1618,6 +1618,8 @@ static int stm32_mdma_probe(struct platform_device *pdev)
dd->device_resume = stm32_mdma_resume;
dd->device_terminate_all = stm32_mdma_terminate_all;
dd->device_synchronize = stm32_mdma_synchronize;
+ dd->descriptor_reuse = true;
+
dd->src_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) |
BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) |
BIT(DMA_SLAVE_BUSWIDTH_4_BYTES) |
--
2.17.1
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next prev parent reply other threads:[~2020-01-27 8:54 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-27 8:53 [PATCH 0/6] STM32 MDMA driver fixes and improvements Amelie Delaunay
2020-01-27 8:53 ` [PATCH 1/6] dmaengine: stm32-mdma: add suspend/resume power management support Amelie Delaunay
2020-01-27 8:53 ` [PATCH 2/6] dmaengine: stm32-mdma: use reset controller only at probe time Amelie Delaunay
2020-01-27 8:53 ` [PATCH 3/6] dmaengine: stm32-mdma: disable clock in case of error during probe Amelie Delaunay
2020-01-27 8:53 ` [PATCH 4/6] dmaengine: stm32-mdma: driver defers probe for clock and reset Amelie Delaunay
2020-01-27 8:53 ` Amelie Delaunay [this message]
2020-01-27 8:53 ` [PATCH 6/6] dmaengine: stm32-mdma: use vchan_terminate_vdesc() in .terminate_all Amelie Delaunay
2020-02-24 16:50 ` [PATCH 0/6] STM32 MDMA driver fixes and improvements Vinod Koul
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