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From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Vinod Koul <vinod.koul@intel.com>,
	linux-kernel@vger.kernel.org,
	Viresh Kumar <viresh.kumar@linaro.org>,
	spear-devel <spear-devel@list.st.com>
Subject: [PATCHv2 01/11] dmaengine: introduce is_slave_direction function
Date: Thu, 10 Jan 2013 10:52:56 +0200	[thread overview]
Message-ID: <1357807986-4026-2-git-send-email-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <1357807986-4026-1-git-send-email-andriy.shevchenko@linux.intel.com>

This function helps to distinguish the slave type of transfer by checking the
direction parameter.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
---
 include/linux/dmaengine.h |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 4ca9cf7..bfcdecb 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -621,6 +621,11 @@ static inline int dmaengine_slave_config(struct dma_chan *chan,
 			(unsigned long)config);
 }
 
+static inline bool is_slave_direction(enum dma_transfer_direction direction)
+{
+	return (direction == DMA_MEM_TO_DEV) || (direction == DMA_DEV_TO_MEM);
+}
+
 static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_single(
 	struct dma_chan *chan, dma_addr_t buf, size_t len,
 	enum dma_transfer_direction dir, unsigned long flags)
-- 
1.7.10.4


  reply	other threads:[~2013-01-10  8:53 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-01-10  8:52 [PATCHv2 00/11] patches against slave dma subsystem Andy Shevchenko
2013-01-10  8:52 ` Andy Shevchenko [this message]
2013-01-10  8:52 ` [PATCHv2 02/11] dma: at_hdmac: check direction properly for cyclic transfers Andy Shevchenko
2013-01-10  8:52 ` [PATCHv2 03/11] dma: dw_dmac: check direction properly in dw_dma_cyclic_prep Andy Shevchenko
2013-01-10  8:52 ` [PATCHv2 04/11] dma: ep93xx_dma: reuse is_slave_direction helper Andy Shevchenko
2013-01-10  8:53 ` [PATCHv2 05/11] dma: ipu_idmac: " Andy Shevchenko
2013-01-10  8:53 ` [PATCHv2 06/11] dma: ste_dma40: " Andy Shevchenko
2013-01-10  8:53 ` [PATCHv2 07/11] dw_dmac: call .probe after we have a device in place Andy Shevchenko
2013-01-10  8:53 ` [PATCHv2 08/11] dw_dmac: store direction in the custom channel structure Andy Shevchenko
2013-01-10  8:53 ` [PATCHv2 09/11] dw_dmac: make usage of dw_dma_slave optional Andy Shevchenko
2013-01-10  9:08   ` Andy Shevchenko
2013-01-10  9:11     ` [PATCHv2.1] " Andy Shevchenko
2013-01-10  8:53 ` [PATCHv2 10/11] dw_dmac: backlink to dw_dma in dw_dma_chan is superfluous Andy Shevchenko
2013-01-10  8:53 ` [PATCHv2 11/11] dma: dw_dmac: clear suspend bit during termination Andy Shevchenko
2013-01-12 13:09 ` [PATCHv2 00/11] patches against slave dma subsystem Vinod Koul

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