linux-kernel - [PATCH 1/5] dmaengine: qca: bam_dma: Add header file for bam driver

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Date:   Thu, 15 Dec 2016 15:25:51 +0530
From:   Abhishek Sahu <absahu@...eaurora.org>
To:     vinod.koul@...el.com, dan.j.williams@...el.com,
        andy.gross@...aro.org
Cc:     stanimir.varbanov@...aro.org, mcgrof@...e.com,
        okaya@...eaurora.org, pramod.gurav@...aro.org, arnd@...db.de,
        linux-kernel@...r.kernel.org, dmaengine@...r.kernel.org,
        linux-arm-msm@...r.kernel.org,
        Abhishek Sahu <absahu@...eaurora.org>
Subject: [PATCH 1/5] dmaengine: qca: bam_dma: Add header file for bam driver

The QCA BAM DMA descriptor has other flags which cannot be
mapped with generic DMA engine flags. This patch creates a
new header file for BAM driver and moves the BAM flags
to this file. Some other BAM specific mapping functions will
be added in this file which can be used by different QCA
peripheral drivers.

Signed-off-by: Abhishek Sahu <absahu@...eaurora.org>
---
 drivers/dma/qcom/bam_dma.c       |  6 +-----
 include/linux/dma/qcom_bam_dma.h | 25 +++++++++++++++++++++++++
 2 files changed, 26 insertions(+), 5 deletions(-)
 create mode 100644 include/linux/dma/qcom_bam_dma.h

diff --git a/drivers/dma/qcom/bam_dma.c b/drivers/dma/qcom/bam_dma.c
index 03c4eb3..7078a4d 100644
--- a/drivers/dma/qcom/bam_dma.c
+++ b/drivers/dma/qcom/bam_dma.c
@@ -49,6 +49,7 @@
 #include <linux/clk.h>
 #include <linux/dmaengine.h>
 #include <linux/pm_runtime.h>
+#include <linux/dma/qcom_bam_dma.h>
 
 #include "../dmaengine.h"
 #include "../virt-dma.h"
@@ -61,11 +62,6 @@ struct bam_desc_hw {
 
 #define BAM_DMA_AUTOSUSPEND_DELAY 100
 
-#define DESC_FLAG_INT BIT(15)
-#define DESC_FLAG_EOT BIT(14)
-#define DESC_FLAG_EOB BIT(13)
-#define DESC_FLAG_NWD BIT(12)
-
 struct bam_async_desc {
 	struct virt_dma_desc vd;
 
diff --git a/include/linux/dma/qcom_bam_dma.h b/include/linux/dma/qcom_bam_dma.h
new file mode 100644
index 0000000..c3b68c2
--- /dev/null
+++ b/include/linux/dma/qcom_bam_dma.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2016, The Linux Foundation. All rights reserved.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _QCOM_BAM_DMA_H
+#define _QCOM_BAM_DMA_H
+
+#define DESC_FLAG_INT BIT(15)
+#define DESC_FLAG_EOT BIT(14)
+#define DESC_FLAG_EOB BIT(13)
+#define DESC_FLAG_NWD BIT(12)
+
+#endif
-- 
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