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Diffstat (limited to 'include/media/v4l2-of.h')
-rw-r--r-- | include/media/v4l2-of.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/include/media/v4l2-of.h b/include/media/v4l2-of.h new file mode 100644 index 000000000000..3a8a84124b44 --- /dev/null +++ b/include/media/v4l2-of.h @@ -0,0 +1,111 @@ +/* + * V4L2 OF binding parsing library + * + * Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd. + * Author: Sylwester Nawrocki <s.nawrocki@samsung.com> + * + * Copyright (C) 2012 Renesas Electronics Corp. + * Author: Guennadi Liakhovetski <g.liakhovetski@gmx.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + */ +#ifndef _V4L2_OF_H +#define _V4L2_OF_H + +#include <linux/list.h> +#include <linux/types.h> +#include <linux/errno.h> + +#include <media/v4l2-mediabus.h> + +struct device_node; + +/** + * struct v4l2_of_bus_mipi_csi2 - MIPI CSI-2 bus data structure + * @flags: media bus (V4L2_MBUS_*) flags + * @data_lanes: an array of physical data lane indexes + * @clock_lane: physical lane index of the clock lane + * @num_data_lanes: number of data lanes + */ +struct v4l2_of_bus_mipi_csi2 { + unsigned int flags; + unsigned char data_lanes[4]; + unsigned char clock_lane; + unsigned short num_data_lanes; +}; + +/** + * struct v4l2_of_bus_parallel - parallel data bus data structure + * @flags: media bus (V4L2_MBUS_*) flags + * @bus_width: bus width in bits + * @data_shift: data shift in bits + */ +struct v4l2_of_bus_parallel { + unsigned int flags; + unsigned char bus_width; + unsigned char data_shift; +}; + +/** + * struct v4l2_of_endpoint - the endpoint data structure + * @port: identifier (value of reg property) of a port this endpoint belongs to + * @id: identifier (value of reg property) of this endpoint + * @local_node: pointer to device_node of this endpoint + * @remote: phandle to remote endpoint node + * @bus_type: bus type + * @bus: bus configuration data structure + * @head: list head for this structure + */ +struct v4l2_of_endpoint { + unsigned int port; + unsigned int id; + const struct device_node *local_node; + const __be32 *remote; + enum v4l2_mbus_type bus_type; + union { + struct v4l2_of_bus_parallel parallel; + struct v4l2_of_bus_mipi_csi2 mipi_csi2; + } bus; + struct list_head head; +}; + +#ifdef CONFIG_OF +void v4l2_of_parse_endpoint(const struct device_node *node, + struct v4l2_of_endpoint *link); +struct device_node *v4l2_of_get_next_endpoint(const struct device_node *parent, + struct device_node *previous); +struct device_node *v4l2_of_get_remote_port_parent( + const struct device_node *node); +struct device_node *v4l2_of_get_remote_port(const struct device_node *node); +#else /* CONFIG_OF */ + +static inline int v4l2_of_parse_endpoint(const struct device_node *node, + struct v4l2_of_endpoint *link) +{ + return -ENOSYS; +} + +static inline struct device_node *v4l2_of_get_next_endpoint( + const struct device_node *parent, + struct device_node *previous) +{ + return NULL; +} + +static inline struct device_node *v4l2_of_get_remote_port_parent( + const struct device_node *node) +{ + return NULL; +} + +static inline struct device_node *v4l2_of_get_remote_port( + const struct device_node *node) +{ + return NULL; +} + +#endif /* CONFIG_OF */ + +#endif /* _V4L2_OF_H */ |