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From: Franklin S Cooper Jr <fcooper-l0cyMroinI0@public.gmane.org>
To: nsekhar-l0cyMroinI0@public.gmane.org,
	dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org,
	computersforpeace-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
	rogerq-l0cyMroinI0@public.gmane.org,
	tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: Franklin S Cooper Jr <fcooper-l0cyMroinI0@public.gmane.org>
Subject: [PATCH v3 3/6] mtd: nand: omap2: Support parsing dma channel information from DT
Date: Wed,  9 Mar 2016 22:07:38 -0600	[thread overview]
Message-ID: <1457582861-20619-4-git-send-email-fcooper@ti.com> (raw)
In-Reply-To: <1457582861-20619-1-git-send-email-fcooper-l0cyMroinI0@public.gmane.org>

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 <fcooper-l0cyMroinI0@public.gmane.org>
---
Version 3 changes:
Instead of passing parent dev use the new property

 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 c553f78..1e5c803 100644
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -1731,7 +1731,9 @@ 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, pdata->gpmc_dev, "rxtx");
+
 		if (!info->dma) {
 			dev_err(&pdev->dev, "DMA engine request failed\n");
 			err = -ENXIO;
-- 
2.7.0

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  parent reply	other threads:[~2016-03-10  4:07 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-10  4:07 [PATCH v3 0/6] mtd: nand: Fix support for NAND DMA prefetch Franklin S Cooper Jr
2016-03-10  4:07 ` [PATCH v3 1/6] memory: omap-gpmc: Store handle to GPMC dev Franklin S Cooper Jr
     [not found]   ` <1457582861-20619-2-git-send-email-fcooper-l0cyMroinI0@public.gmane.org>
2016-03-10 12:40     ` Roger Quadros
     [not found]       ` <56E16B20.5070001-l0cyMroinI0@public.gmane.org>
2016-03-10 13:18         ` Franklin S Cooper Jr.
2016-03-10 13:40       ` Franklin S Cooper Jr.
     [not found]         ` <56E17932.6090304-l0cyMroinI0@public.gmane.org>
2016-03-10 15:22           ` Roger Quadros
2016-03-10 15:24             ` Franklin S Cooper Jr.
2016-03-10  4:07 ` [PATCH v3 2/6] ARM: dts: am437x/am33xx: Fix GPMC dma properties Franklin S Cooper Jr
2016-03-10 12:51   ` Roger Quadros
     [not found]     ` <56E16DBF.40409-l0cyMroinI0@public.gmane.org>
2016-03-10 13:21       ` Franklin S Cooper Jr.
     [not found] ` <1457582861-20619-1-git-send-email-fcooper-l0cyMroinI0@public.gmane.org>
2016-03-10  4:07   ` Franklin S Cooper Jr [this message]
2016-03-10  4:07 ` [PATCH v3 4/6] mtd: nand: omap2: Start dma request before enabling prefetch Franklin S Cooper Jr
2016-03-10  4:07 ` [PATCH v3 5/6] mtd: nand: omap2: Fix high memory dma prefetch transfer Franklin S Cooper Jr
2016-03-10  4:07 ` [PATCH v3 6/6] ARM: OMAP2+: Update GPMC and NAND DT binding documentation Franklin S Cooper Jr

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