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- From b289e31cd9ba63bfa054ec6584204e8ca6ee1019 Mon Sep 17 00:00:00 2001
- From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= <noralf@tronnes.org>
- Date: Sat, 3 Oct 2015 15:58:59 +0200
- Subject: [PATCH] dmaengine: bcm2835: set residue_granularity field
- MIME-Version: 1.0
- Content-Type: text/plain; charset=UTF-8
- Content-Transfer-Encoding: 8bit
- bcm2835-dma supports residue reporting at burst level but didn't report
- this via the residue_granularity field.
- Without this field set properly we get playback issues with I2S cards.
- [by HiassofT, taken from bcm2708-dmaengine]
- Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
- ---
- drivers/dma/bcm2835-dma.c | 1 +
- 1 file changed, 1 insertion(+)
- --- a/drivers/dma/bcm2835-dma.c
- +++ b/drivers/dma/bcm2835-dma.c
- @@ -802,6 +802,7 @@ static int bcm2835_dma_probe(struct plat
- 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);
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