From mboxrd@z Thu Jan 1 00:00:00 1970 From: peter.ujfalusi@ti.com (Peter Ujfalusi) Date: Fri, 27 Nov 2015 10:29:40 +0200 Subject: [RFC 4/6] dmaengine: edma: Add support for DMA filter mapping to slave devices In-Reply-To: <1448612982-28141-1-git-send-email-peter.ujfalusi@ti.com> References: <1448612982-28141-1-git-send-email-peter.ujfalusi@ti.com> Message-ID: <1448612982-28141-5-git-send-email-peter.ujfalusi@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Add support for providing device to filter_fn mapping so client drivers can switch to use the dma_request_chan() API. Signed-off-by: Peter Ujfalusi --- drivers/dma/edma.c | 6 ++++++ include/linux/platform_data/edma.h | 3 +++ 2 files changed, 9 insertions(+) diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index 0675e268d577..587ceb9308b3 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -2297,6 +2297,12 @@ static int edma_probe(struct platform_device *pdev) edma_set_chmap(&ecc->slave_chans[i], ecc->dummy_slot); } + if (info->devnames) { + ecc->dma_slave.filter_map.devnames = info->devnames; + ecc->dma_slave.filter_map.devcnt = info->devcnt; + ecc->dma_slave.filter_map.filter_fn = edma_filter_fn; + } + ret = dma_async_device_register(&ecc->dma_slave); if (ret) { dev_err(dev, "slave ddev registration failed (%d)\n", ret); diff --git a/include/linux/platform_data/edma.h b/include/linux/platform_data/edma.h index e2878baeb90e..58a4dcba0bdf 100644 --- a/include/linux/platform_data/edma.h +++ b/include/linux/platform_data/edma.h @@ -76,6 +76,9 @@ struct edma_soc_info { s8 (*queue_priority_mapping)[2]; const s16 (*xbar_chans)[2]; + + char **devnames; + int devcnt; }; #endif -- 2.6.3