Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / media / soc_mediabus.h

diff --git a/kernel/include/media/soc_mediabus.h b/kernel/include/media/soc_mediabus.h
new file mode 100644 (file)
index 0000000..2ff7737
--- /dev/null
+++ b/kernel/include/media/soc_mediabus.h
@@ -0,0 +1,112 @@
+/*
+ * SoC-camera Media Bus API extensions
+ *
+ * Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
+ *
+ * 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 SOC_MEDIABUS_H
+#define SOC_MEDIABUS_H
+
+#include <linux/videodev2.h>
+#include <linux/v4l2-mediabus.h>
+
+/**
+ * enum soc_mbus_packing - data packing types on the media-bus
+ * @SOC_MBUS_PACKING_NONE:     no packing, bit-for-bit transfer to RAM, one
+ *                             sample represents one pixel
+ * @SOC_MBUS_PACKING_2X8_PADHI:        16 bits transferred in 2 8-bit samples, in the
+ *                             possibly incomplete byte high bits are padding
+ * @SOC_MBUS_PACKING_2X8_PADLO:        as above, but low bits are padding
+ * @SOC_MBUS_PACKING_EXTEND16: sample width (e.g., 10 bits) has to be extended
+ *                             to 16 bits
+ * @SOC_MBUS_PACKING_VARIABLE: compressed formats with variable packing
+ * @SOC_MBUS_PACKING_1_5X8:    used for packed YUV 4:2:0 formats, where 4
+ *                             pixels occupy 6 bytes in RAM
+ * @SOC_MBUS_PACKING_EXTEND32: sample width (e.g., 24 bits) has to be extended
+ *                             to 32 bits
+ */
+enum soc_mbus_packing {
+       SOC_MBUS_PACKING_NONE,
+       SOC_MBUS_PACKING_2X8_PADHI,
+       SOC_MBUS_PACKING_2X8_PADLO,
+       SOC_MBUS_PACKING_EXTEND16,
+       SOC_MBUS_PACKING_VARIABLE,
+       SOC_MBUS_PACKING_1_5X8,
+       SOC_MBUS_PACKING_EXTEND32,
+};
+
+/**
+ * enum soc_mbus_order - sample order on the media bus
+ * @SOC_MBUS_ORDER_LE:         least significant sample first
+ * @SOC_MBUS_ORDER_BE:         most significant sample first
+ */
+enum soc_mbus_order {
+       SOC_MBUS_ORDER_LE,
+       SOC_MBUS_ORDER_BE,
+};
+
+/**
+ * enum soc_mbus_layout - planes layout in memory
+ * @SOC_MBUS_LAYOUT_PACKED:            color components packed
+ * @SOC_MBUS_LAYOUT_PLANAR_2Y_U_V:     YUV components stored in 3 planes (4:2:2)
+ * @SOC_MBUS_LAYOUT_PLANAR_2Y_C:       YUV components stored in a luma and a
+ *                                     chroma plane (C plane is half the size
+ *                                     of Y plane)
+ * @SOC_MBUS_LAYOUT_PLANAR_Y_C:                YUV components stored in a luma and a
+ *                                     chroma plane (C plane is the same size
+ *                                     as Y plane)
+ */
+enum soc_mbus_layout {
+       SOC_MBUS_LAYOUT_PACKED = 0,
+       SOC_MBUS_LAYOUT_PLANAR_2Y_U_V,
+       SOC_MBUS_LAYOUT_PLANAR_2Y_C,
+       SOC_MBUS_LAYOUT_PLANAR_Y_C,
+};
+
+/**
+ * struct soc_mbus_pixelfmt - Data format on the media bus
+ * @name:              Name of the format
+ * @fourcc:            Fourcc code, that will be obtained if the data is
+ *                     stored in memory in the following way:
+ * @packing:           Type of sample-packing, that has to be used
+ * @order:             Sample order when storing in memory
+ * @bits_per_sample:   How many bits the bridge has to sample
+ */
+struct soc_mbus_pixelfmt {
+       const char              *name;
+       u32                     fourcc;
+       enum soc_mbus_packing   packing;
+       enum soc_mbus_order     order;
+       enum soc_mbus_layout    layout;
+       u8                      bits_per_sample;
+};
+
+/**
+ * struct soc_mbus_lookup - Lookup FOURCC IDs by mediabus codes for pass-through
+ * @code:      mediabus pixel-code
+ * @fmt:       pixel format description
+ */
+struct soc_mbus_lookup {
+       u32     code;
+       struct soc_mbus_pixelfmt        fmt;
+};
+
+const struct soc_mbus_pixelfmt *soc_mbus_find_fmtdesc(
+       u32 code,
+       const struct soc_mbus_lookup *lookup,
+       int n);
+const struct soc_mbus_pixelfmt *soc_mbus_get_fmtdesc(
+       u32 code);
+s32 soc_mbus_bytes_per_line(u32 width, const struct soc_mbus_pixelfmt *mf);
+s32 soc_mbus_image_size(const struct soc_mbus_pixelfmt *mf,
+                       u32 bytes_per_line, u32 height);
+int soc_mbus_samples_per_pixel(const struct soc_mbus_pixelfmt *mf,
+                       unsigned int *numerator, unsigned int *denominator);
+unsigned int soc_mbus_config_compatible(const struct v4l2_mbus_config *cfg,
+                                       unsigned int flags);
+
+#endif