diff mbox

[V2,1/8] dmaengine: bcm2835: set residue_granularity field

Message ID 1452187987-2605-2-git-send-email-kernel@martin.sperl.org (mailing list archive)
State New, archived
Headers show

Commit Message

Martin Sperl Jan. 7, 2016, 5:32 p.m. UTC 
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>
---
 drivers/dma/bcm2835-dma.c |    1 +
 1 file changed, 1 insertion(+)

Comments

Eric Anholt Jan. 28, 2016, 7:53 p.m. UTC | #1 
kernel@martin.sperl.org writes:

> 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>
diff mbox

Patch

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);