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Message-ID: <20191223110458.30766-7-peter.ujfalusi@ti.com>
Date: Mon, 23 Dec 2019 13:04:46 +0200
From: Peter Ujfalusi <peter.ujfalusi@...com>
To: <vkoul@...nel.org>, <robh+dt@...nel.org>, <nm@...com>,
<ssantosh@...nel.org>
CC: <dan.j.williams@...el.com>, <dmaengine@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<grygorii.strashko@...com>, <lokeshvutla@...com>,
<t-kristo@...com>, <tony@...mide.com>, <j-keerthy@...com>,
<vigneshr@...com>, <frowand.list@...il.com>
Subject: [PATCH v8 06/18] dmaengine: Add helper function to convert direction value to text
dmaengine_get_direction_text() can be useful when the direction is printed
out. The text is easier to comprehend than the number.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
---
include/linux/dmaengine.h | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 7f9a7150a632..9852ba7399db 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -1537,4 +1537,23 @@ static inline struct dma_chan
return __dma_request_channel(mask, fn, fn_param, NULL);
}
+
+static inline char *
+dmaengine_get_direction_text(enum dma_transfer_direction dir)
+{
+ switch (dir) {
+ case DMA_DEV_TO_MEM:
+ return "DEV_TO_MEM";
+ case DMA_MEM_TO_DEV:
+ return "MEM_TO_DEV";
+ case DMA_MEM_TO_MEM:
+ return "MEM_TO_MEM";
+ case DMA_DEV_TO_DEV:
+ return "DEV_TO_DEV";
+ default:
+ break;
+ }
+
+ return "invalid";
+}
#endif /* DMAENGINE_H */
--
Peter
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
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