From: Eunok Jo <eunok25.jo@samsung.com>
Date: Fri, 12 Jan 2018 07:06:38 +0000 (+0900)
Subject: [HACK] dma: add header file to support dma
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2f465f7c08737e3c4c25e01182254d9fa43056de;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

[HACK] dma: add header file to support dma

Change-Id: If73781484a96c550bc0315140b5677b877da7acc
Signed-off-by: Eunok Jo <eunok25.jo@samsung.com>
---

diff --git a/include/linux/dma/dma-pl330.h b/include/linux/dma/dma-pl330.h
new file mode 100644
index 000000000000..2b8158aaea4e
--- /dev/null
+++ b/include/linux/dma/dma-pl330.h
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2010 Samsung Electronics Co. Ltd.
+ *	Jaswinder Singh <jassi.brar@samsung.com>
+ *
+ * This program 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 __DMA_PL330_H_
+#define __DMA_PL330_H_ __FILE__
+
+#include <linux/dmaengine.h>
+
+/*
+ * PL330 can assign any channel to communicate with
+ * any of the peripherals attched to the DMAC.
+ * For the sake of consistency across client drivers,
+ * We keep the channel names unchanged and only add
+ * missing peripherals are added.
+ * Order is not important since DMA PL330 API driver
+ * use these just as IDs.
+ */
+enum dma_ch {
+	DMACH_MAX = 0,
+};
+
+struct s3c2410_dma_client {
+	char	*name;
+};
+
+static inline bool samsung_dma_has_circular(void)
+{
+	return true;
+}
+
+static inline bool samsung_dma_is_dmadev(void)
+{
+	return true;
+}
+
+static inline bool samsung_dma_has_infiniteloop(void)
+{
+	return true;
+}
+
+struct samsung_dma_req {
+	enum dma_transaction_type cap;
+	struct s3c2410_dma_client *client;
+};
+
+struct samsung_dma_prep {
+	enum dma_transaction_type cap;
+	enum dma_transfer_direction direction;
+	dma_addr_t buf;
+	unsigned long period;
+	unsigned long len;
+	void (*fp)(void *data);
+	void *fp_param;
+	unsigned int infiniteloop;
+};
+
+struct samsung_dma_config {
+	enum dma_transfer_direction direction;
+	enum dma_slave_buswidth width;
+	u32 maxburst;
+	dma_addr_t fifo;
+};
+
+struct samsung_dma_ops {
+	unsigned long(*request)(enum dma_ch ch, struct samsung_dma_req *param,
+				struct device *dev, char *ch_name);
+	int (*release)(unsigned long ch, void *param);
+	int (*config)(unsigned long ch, struct samsung_dma_config *param);
+	int (*prepare)(unsigned long ch, struct samsung_dma_prep *param);
+	int (*trigger)(unsigned long ch);
+	int (*started)(unsigned long ch);
+	int (*getposition)(unsigned long ch, dma_addr_t *src, dma_addr_t *dst);
+	int (*flush)(unsigned long ch);
+	int (*stop)(unsigned long ch);
+	int (*debug)(unsigned long ch);
+};
+
+/*
+ * samsung_dma_get_ops
+ * get the set of samsung dma operations
+ */
+#ifdef CONFIG_SAMSUNG_DMADEV
+extern void *samsung_dmadev_get_ops(void);
+extern void *s3c_dma_get_ops(void);
+
+static inline void *samsung_dma_get_ops(void)
+{
+	if (samsung_dma_is_dmadev())
+		return samsung_dmadev_get_ops();
+	else
+		return s3c_dma_get_ops();
+}
+#else
+#define samsung_dma_get_ops() NULL
+#endif
+
+#endif	/* __DMA_PL330_H_ */
+