[media] v4l: Renesas R-Car VSP1 driver

The VSP1 is a video processing engine that includes a blender, scalers,
filters and statistics computation. Configurable data path routing logic
allows ordering the internal blocks in a flexible way.
Due to the configurable nature of the pipeline the driver implements the
media controller API and doesn't use the V4L2 mem-to-mem framework, even
though the device usually operates in memory to memory mode.
Only the read pixel formatters, up/down scalers, write pixel formatters
and LCDC interface are supported at this stage.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

1 files changed, 73 insertions, 0 deletions

diff --git a/drivers/media/platform/vsp1/vsp1.h b/drivers/media/platform/vsp1/vsp1.h
new file mode 100644
index 000000000000..11ac94bec3a3
--- /dev/null
+++ b/drivers/media/platform/vsp1/vsp1.h
@@ -0,0 +1,73 @@
+/*
+ * vsp1.h  --  R-Car VSP1 Driver
+ *
+ * Copyright (C) 2013 Renesas Corporation
+ *
+ * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.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 __VSP1_H__
+#define __VSP1_H__
+
+#include <linux/io.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/platform_data/vsp1.h>
+
+#include <media/media-device.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-subdev.h>
+
+#include "vsp1_regs.h"
+
+struct clk;
+struct device;
+
+struct vsp1_platform_data;
+struct vsp1_lif;
+struct vsp1_rwpf;
+struct vsp1_uds;
+
+#define VPS1_MAX_RPF		5
+#define VPS1_MAX_UDS		3
+#define VPS1_MAX_WPF		4
+
+struct vsp1_device {
+	struct device *dev;
+	struct vsp1_platform_data *pdata;
+
+	void __iomem *mmio;
+	struct clk *clock;
+
+	struct mutex lock;
+	int ref_count;
+
+	struct vsp1_lif *lif;
+	struct vsp1_rwpf *rpf[VPS1_MAX_RPF];
+	struct vsp1_uds *uds[VPS1_MAX_UDS];
+	struct vsp1_rwpf *wpf[VPS1_MAX_WPF];
+
+	struct list_head entities;
+
+	struct v4l2_device v4l2_dev;
+	struct media_device media_dev;
+};
+
+struct vsp1_device *vsp1_device_get(struct vsp1_device *vsp1);
+void vsp1_device_put(struct vsp1_device *vsp1);
+
+static inline u32 vsp1_read(struct vsp1_device *vsp1, u32 reg)
+{
+	return ioread32(vsp1->mmio + reg);
+}
+
+static inline void vsp1_write(struct vsp1_device *vsp1, u32 reg, u32 data)
+{
+	iowrite32(data, vsp1->mmio + reg);
+}
+
+#endif /* __VSP1_H__ */