From: Vinod Koul <vinod.koul@intel.com>
To: dmaengine@vger.kernel.org
Cc: Vinod Koul <vinod.koul@intel.com>, Zhang Wei <zw@zh-kernel.org>,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2/6] dmaengine: freescale: add and export fsl_dma_external_start()
Date: Sat, 11 Oct 2014 21:16:44 +0530 [thread overview]
Message-ID: <1413042408-28491-3-git-send-email-vinod.koul@intel.com> (raw)
In-Reply-To: <1413042408-28491-1-git-send-email-vinod.koul@intel.com>
The freescale driver uses custom device control FSLDMA_EXTERNAL_START to
put the controller in external start mode.
Since we are planning to deprecate the device control, move this to exported
API. Subsequent patches will remove the FSLDMA_EXTERNAL_START
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---
drivers/dma/fsldma.c | 16 +++++++++++++++-
include/linux/fsldma.h | 13 +++++++++++++
2 files changed, 28 insertions(+), 1 deletions(-)
create mode 100644 include/linux/fsldma.h
diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index d5d6885..0cded86 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -36,7 +36,7 @@
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
-
+#include <linux/fsldma.h>
#include "dmaengine.h"
#include "fsldma.h"
@@ -367,6 +367,20 @@ static void fsl_chan_toggle_ext_start(struct fsldma_chan *chan, int enable)
chan->feature &= ~FSL_DMA_CHAN_START_EXT;
}
+int fsl_dma_external_start(struct dma_chan *dchan, int enable)
+{
+ struct fsldma_chan *chan;
+
+ if (!dchan)
+ return -EINVAL;
+
+ chan = to_fsl_chan(dchan);
+
+ fsl_chan_toggle_ext_start(chan, enable);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(fsl_dma_external_start);
+
static void append_ld_queue(struct fsldma_chan *chan, struct fsl_desc_sw *desc)
{
struct fsl_desc_sw *tail = to_fsl_desc(chan->ld_pending.prev);
diff --git a/include/linux/fsldma.h b/include/linux/fsldma.h
new file mode 100644
index 0000000..b213c02
--- /dev/null
+++ b/include/linux/fsldma.h
@@ -0,0 +1,13 @@
+/*
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef FSL_DMA_H
+#define FSL_DMA_H
+/* fsl dma API for enxternal start */
+int fsl_dma_external_start(struct dma_chan *dchan, int enable);
+
+#endif
--
1.7.0.4
next prev parent reply other threads:[~2014-10-11 16:20 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-11 15:46 [PATCH 0/6] dmaengine: remove FSLDMA_EXTERNAL_START Vinod Koul
2014-10-11 15:46 ` [PATCH 1/6] dmaengine: add dmaengine_prep_dma_sg() helper Vinod Koul
2014-10-11 15:46 ` Vinod Koul [this message]
2014-10-11 15:46 ` [PATCH 3/6] carma-fpga: use dmaengine_xxx() API Vinod Koul
2014-10-11 15:46 ` [PATCH 4/6] carma-fpga: move to fsl_dma_external_start() Vinod Koul
2014-10-11 15:46 ` [PATCH 5/6] dmaengine: freescale: remove FSLDMA_EXTERNAL_START control method Vinod Koul
2014-10-11 15:46 ` [PATCH 6/6] dmaengine: remove FSLDMA_EXTERNAL_START Vinod Koul
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