From mboxrd@z Thu Jan 1 00:00:00 1970 From: Franklin S Cooper Jr Subject: [PATCH 1/2] mtd: nand: omap2: Support parsing dma channel information from DT Date: Tue, 3 May 2016 12:50:05 -0500 Message-ID: <1462297806-11555-2-git-send-email-fcooper@ti.com> References: <1462297806-11555-1-git-send-email-fcooper@ti.com> Return-path: In-Reply-To: <1462297806-11555-1-git-send-email-fcooper@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: robh+dt@kernel.org, boris.brezillon@free-electrons.com, richard@nod.at, dwmw2@infradead.org, computersforpeace@gmail.com, tony@atomide.com, rogerq@ti.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org Cc: "Cooper Jr., Franklin" List-Id: devicetree@vger.kernel.org From: "Cooper Jr., Franklin" Switch from dma_request_channel to allow passing dma channel information from DT rather than hardcoding a value. Also provide a handle to the GPMC's dev so it can be used to parse the DMA channel information within the GPMC's DT node. Signed-off-by: Franklin S Cooper Jr --- drivers/mtd/nand/omap2.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c index 08e1588..f864369 100644 --- a/drivers/mtd/nand/omap2.c +++ b/drivers/mtd/nand/omap2.c @@ -1922,7 +1922,9 @@ static int omap_nand_probe(struct platform_device *pdev) dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); sig = OMAP24XX_DMA_GPMC; - info->dma = dma_request_channel(mask, omap_dma_filter_fn, &sig); + info->dma = dma_request_slave_channel_compat(mask, + omap_dma_filter_fn, &sig, pdev->dev.parent, "rxtx"); + if (!info->dma) { dev_err(&pdev->dev, "DMA engine request failed\n"); err = -ENXIO; -- 2.7.0