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dmaengine: pxa: add a default requestor policy 

As what former drcmr -1 value meant, add a this as a default to each
channel, ie. that by default no requestor line is used.

This is specifically used for network drivers smc91x and smc911x, and
needed for their port to slave maps.

Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Vinod Koul <vkoul@kernel.org>
hifive-unleashed-5.1
Robert Jarzmik 2018-06-17 19:02:06 +02:00
parent 1da10c17af
commit 88a0513cf6
1 changed files with 5 additions and 0 deletions
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5
drivers/dma/pxa_dma.c
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@ -762,6 +762,8 @@ static void pxad_free_chan_resources(struct dma_chan *dchan)
dma_pool_destroy(chan->desc_pool);
chan->desc_pool = NULL;
chan->drcmr = U32_MAX;
chan->prio = PXAD_PRIO_LOWEST;
}
static void pxad_free_desc(struct virt_dma_desc *vd)
@ -1386,6 +1388,9 @@ static int pxad_init_dmadev(struct platform_device *op,
c = devm_kzalloc(&op->dev, sizeof(*c), GFP_KERNEL);
if (!c)
return -ENOMEM;
c->drcmr = U32_MAX;
c->prio = PXAD_PRIO_LOWEST;
c->vc.desc_free = pxad_free_desc;
vchan_init(&c->vc, &pdev->slave);
init_waitqueue_head(&c->wq_state);