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-rw-r--r--drivers/media/platform/xilinx/xilinx-vip.h238
1 files changed, 238 insertions, 0 deletions
diff --git a/drivers/media/platform/xilinx/xilinx-vip.h b/drivers/media/platform/xilinx/xilinx-vip.h
new file mode 100644
index 000000000000..42fee2026815
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+++ b/drivers/media/platform/xilinx/xilinx-vip.h
@@ -0,0 +1,238 @@
+/*
+ * Xilinx Video IP Core
+ *
+ * Copyright (C) 2013-2015 Ideas on Board
+ * Copyright (C) 2013-2015 Xilinx, Inc.
+ *
+ * Contacts: Hyun Kwon <hyun.kwon@xilinx.com>
+ * 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 version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __XILINX_VIP_H__
+#define __XILINX_VIP_H__
+
+#include <linux/io.h>
+#include <media/v4l2-subdev.h>
+
+struct clk;
+
+/*
+ * Minimum and maximum width and height common to most video IP cores. IP
+ * cores with different requirements must define their own values.
+ */
+#define XVIP_MIN_WIDTH 32
+#define XVIP_MAX_WIDTH 7680
+#define XVIP_MIN_HEIGHT 32
+#define XVIP_MAX_HEIGHT 7680
+
+/*
+ * Pad IDs. IP cores with with multiple inputs or outputs should define
+ * their own values.
+ */
+#define XVIP_PAD_SINK 0
+#define XVIP_PAD_SOURCE 1
+
+/* Xilinx Video IP Control Registers */
+#define XVIP_CTRL_CONTROL 0x0000
+#define XVIP_CTRL_CONTROL_SW_ENABLE (1 << 0)
+#define XVIP_CTRL_CONTROL_REG_UPDATE (1 << 1)
+#define XVIP_CTRL_CONTROL_BYPASS (1 << 4)
+#define XVIP_CTRL_CONTROL_TEST_PATTERN (1 << 5)
+#define XVIP_CTRL_CONTROL_FRAME_SYNC_RESET (1 << 30)
+#define XVIP_CTRL_CONTROL_SW_RESET (1 << 31)
+#define XVIP_CTRL_STATUS 0x0004
+#define XVIP_CTRL_STATUS_PROC_STARTED (1 << 0)
+#define XVIP_CTRL_STATUS_EOF (1 << 1)
+#define XVIP_CTRL_ERROR 0x0008
+#define XVIP_CTRL_ERROR_SLAVE_EOL_EARLY (1 << 0)
+#define XVIP_CTRL_ERROR_SLAVE_EOL_LATE (1 << 1)
+#define XVIP_CTRL_ERROR_SLAVE_SOF_EARLY (1 << 2)
+#define XVIP_CTRL_ERROR_SLAVE_SOF_LATE (1 << 3)
+#define XVIP_CTRL_IRQ_ENABLE 0x000c
+#define XVIP_CTRL_IRQ_ENABLE_PROC_STARTED (1 << 0)
+#define XVIP_CTRL_IRQ_EOF (1 << 1)
+#define XVIP_CTRL_VERSION 0x0010
+#define XVIP_CTRL_VERSION_MAJOR_MASK (0xff << 24)
+#define XVIP_CTRL_VERSION_MAJOR_SHIFT 24
+#define XVIP_CTRL_VERSION_MINOR_MASK (0xff << 16)
+#define XVIP_CTRL_VERSION_MINOR_SHIFT 16
+#define XVIP_CTRL_VERSION_REVISION_MASK (0xf << 12)
+#define XVIP_CTRL_VERSION_REVISION_SHIFT 12
+#define XVIP_CTRL_VERSION_PATCH_MASK (0xf << 8)
+#define XVIP_CTRL_VERSION_PATCH_SHIFT 8
+#define XVIP_CTRL_VERSION_INTERNAL_MASK (0xff << 0)
+#define XVIP_CTRL_VERSION_INTERNAL_SHIFT 0
+
+/* Xilinx Video IP Timing Registers */
+#define XVIP_ACTIVE_SIZE 0x0020
+#define XVIP_ACTIVE_VSIZE_MASK (0x7ff << 16)
+#define XVIP_ACTIVE_VSIZE_SHIFT 16
+#define XVIP_ACTIVE_HSIZE_MASK (0x7ff << 0)
+#define XVIP_ACTIVE_HSIZE_SHIFT 0
+#define XVIP_ENCODING 0x0028
+#define XVIP_ENCODING_NBITS_8 (0 << 4)
+#define XVIP_ENCODING_NBITS_10 (1 << 4)
+#define XVIP_ENCODING_NBITS_12 (2 << 4)
+#define XVIP_ENCODING_NBITS_16 (3 << 4)
+#define XVIP_ENCODING_NBITS_MASK (3 << 4)
+#define XVIP_ENCODING_NBITS_SHIFT 4
+#define XVIP_ENCODING_VIDEO_FORMAT_YUV422 (0 << 0)
+#define XVIP_ENCODING_VIDEO_FORMAT_YUV444 (1 << 0)
+#define XVIP_ENCODING_VIDEO_FORMAT_RGB (2 << 0)
+#define XVIP_ENCODING_VIDEO_FORMAT_YUV420 (3 << 0)
+#define XVIP_ENCODING_VIDEO_FORMAT_MASK (3 << 0)
+#define XVIP_ENCODING_VIDEO_FORMAT_SHIFT 0
+
+/**
+ * struct xvip_device - Xilinx Video IP device structure
+ * @subdev: V4L2 subdevice
+ * @dev: (OF) device
+ * @iomem: device I/O register space remapped to kernel virtual memory
+ * @clk: video core clock
+ * @saved_ctrl: saved control register for resume / suspend
+ */
+struct xvip_device {
+ struct v4l2_subdev subdev;
+ struct device *dev;
+ void __iomem *iomem;
+ struct clk *clk;
+ u32 saved_ctrl;
+};
+
+/**
+ * struct xvip_video_format - Xilinx Video IP video format description
+ * @vf_code: AXI4 video format code
+ * @width: AXI4 format width in bits per component
+ * @pattern: CFA pattern for Mono/Sensor formats
+ * @code: media bus format code
+ * @bpp: bytes per pixel (when stored in memory)
+ * @fourcc: V4L2 pixel format FCC identifier
+ * @description: format description, suitable for userspace
+ */
+struct xvip_video_format {
+ unsigned int vf_code;
+ unsigned int width;
+ const char *pattern;
+ unsigned int code;
+ unsigned int bpp;
+ u32 fourcc;
+ const char *description;
+};
+
+const struct xvip_video_format *xvip_get_format_by_code(unsigned int code);
+const struct xvip_video_format *xvip_get_format_by_fourcc(u32 fourcc);
+const struct xvip_video_format *xvip_of_get_format(struct device_node *node);
+void xvip_set_format_size(struct v4l2_mbus_framefmt *format,
+ const struct v4l2_subdev_format *fmt);
+int xvip_enum_mbus_code(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_mbus_code_enum *code);
+int xvip_enum_frame_size(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_frame_size_enum *fse);
+
+static inline u32 xvip_read(struct xvip_device *xvip, u32 addr)
+{
+ return ioread32(xvip->iomem + addr);
+}
+
+static inline void xvip_write(struct xvip_device *xvip, u32 addr, u32 value)
+{
+ iowrite32(value, xvip->iomem + addr);
+}
+
+static inline void xvip_clr(struct xvip_device *xvip, u32 addr, u32 clr)
+{
+ xvip_write(xvip, addr, xvip_read(xvip, addr) & ~clr);
+}
+
+static inline void xvip_set(struct xvip_device *xvip, u32 addr, u32 set)
+{
+ xvip_write(xvip, addr, xvip_read(xvip, addr) | set);
+}
+
+void xvip_clr_or_set(struct xvip_device *xvip, u32 addr, u32 mask, bool set);
+void xvip_clr_and_set(struct xvip_device *xvip, u32 addr, u32 clr, u32 set);
+
+int xvip_init_resources(struct xvip_device *xvip);
+void xvip_cleanup_resources(struct xvip_device *xvip);
+
+static inline void xvip_reset(struct xvip_device *xvip)
+{
+ xvip_write(xvip, XVIP_CTRL_CONTROL, XVIP_CTRL_CONTROL_SW_RESET);
+}
+
+static inline void xvip_start(struct xvip_device *xvip)
+{
+ xvip_set(xvip, XVIP_CTRL_CONTROL,
+ XVIP_CTRL_CONTROL_SW_ENABLE | XVIP_CTRL_CONTROL_REG_UPDATE);
+}
+
+static inline void xvip_stop(struct xvip_device *xvip)
+{
+ xvip_clr(xvip, XVIP_CTRL_CONTROL, XVIP_CTRL_CONTROL_SW_ENABLE);
+}
+
+static inline void xvip_resume(struct xvip_device *xvip)
+{
+ xvip_write(xvip, XVIP_CTRL_CONTROL,
+ xvip->saved_ctrl | XVIP_CTRL_CONTROL_SW_ENABLE);
+}
+
+static inline void xvip_suspend(struct xvip_device *xvip)
+{
+ xvip->saved_ctrl = xvip_read(xvip, XVIP_CTRL_CONTROL);
+ xvip_write(xvip, XVIP_CTRL_CONTROL,
+ xvip->saved_ctrl & ~XVIP_CTRL_CONTROL_SW_ENABLE);
+}
+
+static inline void xvip_set_frame_size(struct xvip_device *xvip,
+ const struct v4l2_mbus_framefmt *format)
+{
+ xvip_write(xvip, XVIP_ACTIVE_SIZE,
+ (format->height << XVIP_ACTIVE_VSIZE_SHIFT) |
+ (format->width << XVIP_ACTIVE_HSIZE_SHIFT));
+}
+
+static inline void xvip_get_frame_size(struct xvip_device *xvip,
+ struct v4l2_mbus_framefmt *format)
+{
+ u32 reg;
+
+ reg = xvip_read(xvip, XVIP_ACTIVE_SIZE);
+ format->width = (reg & XVIP_ACTIVE_HSIZE_MASK) >>
+ XVIP_ACTIVE_HSIZE_SHIFT;
+ format->height = (reg & XVIP_ACTIVE_VSIZE_MASK) >>
+ XVIP_ACTIVE_VSIZE_SHIFT;
+}
+
+static inline void xvip_enable_reg_update(struct xvip_device *xvip)
+{
+ xvip_set(xvip, XVIP_CTRL_CONTROL, XVIP_CTRL_CONTROL_REG_UPDATE);
+}
+
+static inline void xvip_disable_reg_update(struct xvip_device *xvip)
+{
+ xvip_clr(xvip, XVIP_CTRL_CONTROL, XVIP_CTRL_CONTROL_REG_UPDATE);
+}
+
+static inline void xvip_print_version(struct xvip_device *xvip)
+{
+ u32 version;
+
+ version = xvip_read(xvip, XVIP_CTRL_VERSION);
+
+ dev_info(xvip->dev, "device found, version %u.%02x%x\n",
+ ((version & XVIP_CTRL_VERSION_MAJOR_MASK) >>
+ XVIP_CTRL_VERSION_MAJOR_SHIFT),
+ ((version & XVIP_CTRL_VERSION_MINOR_MASK) >>
+ XVIP_CTRL_VERSION_MINOR_SHIFT),
+ ((version & XVIP_CTRL_VERSION_REVISION_MASK) >>
+ XVIP_CTRL_VERSION_REVISION_SHIFT));
+}
+
+#endif /* __XILINX_VIP_H__ */