From: eric@anholt.net (Eric Anholt)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/8] dmaengine: bcm2835: set residue_granularity field
Date: Wed, 16 Mar 2016 12:24:55 -0700 [thread overview]
Message-ID: <1458156302-4359-2-git-send-email-eric@anholt.net> (raw)
In-Reply-To: <1458156302-4359-1-git-send-email-eric@anholt.net>
From: Martin Sperl <kernel@martin.sperl.org>
bcm2835-dma supports residue reporting at burst level but didn't report
this via the residue_granularity field.
See also:
https://github.com/raspberrypi/linux/commit/b015555327afa402f70ddc86e3632f59df1cd9d7
for the downstream patch.
Signed-off-by: Matthias Reichl <hias@horus.com>
Signed-off-by: Noralf Tr?nnes <noralf@tronnes.org>
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Eric Anholt <eric@anholt.net>
---
drivers/dma/bcm2835-dma.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/dma/bcm2835-dma.c b/drivers/dma/bcm2835-dma.c
index 996c4b0..2d72fe8 100644
--- a/drivers/dma/bcm2835-dma.c
+++ b/drivers/dma/bcm2835-dma.c
@@ -625,6 +625,7 @@ static int bcm2835_dma_probe(struct platform_device *pdev)
od->ddev.src_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
od->ddev.dst_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
od->ddev.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
+ od->ddev.residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
od->ddev.dev = &pdev->dev;
INIT_LIST_HEAD(&od->ddev.channels);
spin_lock_init(&od->lock);
--
2.7.0
WARNING: multiple messages have this Message-ID (diff)
From: Eric Anholt <eric@anholt.net>
To: linux-rpi-kernel@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
"Stephen Warren" <swarren@wwwdotorg.org>,
"Lee Jones" <lee@kernel.org>, "Vinod Koul" <vinod.koul@intel.com>,
dmaengine@vger.kernel.org,
"Martin Sperl" <kernel@martin.sperl.org>,
"Matthias Reichl" <hias@horus.com>,
"Noralf Trønnes" <noralf@tronnes.org>,
"Eric Anholt" <eric@anholt.net>
Subject: [PATCH 1/8] dmaengine: bcm2835: set residue_granularity field
Date: Wed, 16 Mar 2016 12:24:55 -0700 [thread overview]
Message-ID: <1458156302-4359-2-git-send-email-eric@anholt.net> (raw)
In-Reply-To: <1458156302-4359-1-git-send-email-eric@anholt.net>
From: Martin Sperl <kernel@martin.sperl.org>
bcm2835-dma supports residue reporting at burst level but didn't report
this via the residue_granularity field.
See also:
https://github.com/raspberrypi/linux/commit/b015555327afa402f70ddc86e3632f59df1cd9d7
for the downstream patch.
Signed-off-by: Matthias Reichl <hias@horus.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Eric Anholt <eric@anholt.net>
---
drivers/dma/bcm2835-dma.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/dma/bcm2835-dma.c b/drivers/dma/bcm2835-dma.c
index 996c4b0..2d72fe8 100644
--- a/drivers/dma/bcm2835-dma.c
+++ b/drivers/dma/bcm2835-dma.c
@@ -625,6 +625,7 @@ static int bcm2835_dma_probe(struct platform_device *pdev)
od->ddev.src_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
od->ddev.dst_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
od->ddev.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
+ od->ddev.residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
od->ddev.dev = &pdev->dev;
INIT_LIST_HEAD(&od->ddev.channels);
spin_lock_init(&od->lock);
--
2.7.0
next prev parent reply other threads:[~2016-03-16 19:24 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-16 19:24 [PATCH 0/8 v4] bcm2835 DMA slave support Eric Anholt
2016-03-16 19:24 ` Eric Anholt
2016-03-16 19:24 ` Eric Anholt [this message]
2016-03-16 19:24 ` [PATCH 1/8] dmaengine: bcm2835: set residue_granularity field Eric Anholt
2016-03-16 19:24 ` [PATCH 2/8] dmaengine: bcm2835: remove unnecessary masking of dma channels Eric Anholt
2016-03-16 19:24 ` Eric Anholt
2016-03-16 19:24 ` [PATCH 3/8] dmaengine: bcm2835: add additional defines for DMA-registers Eric Anholt
2016-03-16 19:24 ` Eric Anholt
2016-03-16 19:24 ` [PATCH 4/8] dmaengine: bcm2835: move cyclic member from bcm2835_chan into bcm2835_desc Eric Anholt
2016-03-16 19:24 ` Eric Anholt
2016-03-16 19:24 ` [PATCH 5/8] dmaengine: bcm2835: move controlblock chain generation into separate method Eric Anholt
2016-03-16 19:24 ` Eric Anholt
2016-03-16 19:25 ` [PATCH 6/8] dmaengine: bcm2835: limit max length based on channel type Eric Anholt
2016-03-16 19:25 ` Eric Anholt
2016-03-16 19:25 ` [PATCH 7/8] dmaengine: bcm2835: add slave_sg support to bcm2835-dma Eric Anholt
2016-03-16 19:25 ` Eric Anholt
2016-03-16 19:25 ` [PATCH 8/8] dmaengine: bcm2835: add dma_memcopy " Eric Anholt
2016-03-16 19:25 ` Eric Anholt
2016-03-17 10:22 ` [PATCH 0/8 v4] bcm2835 DMA slave support Martin Sperl
2016-03-17 10:22 ` Martin Sperl
2016-03-17 13:17 ` Martin Sperl
2016-03-17 13:17 ` Martin Sperl
2016-04-05 18:03 ` Vinod Koul
2016-04-05 18:03 ` Vinod Koul
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