70007036a5
Complex video pipelines are modelled with the of_graph bindings in the devicetree. This patch adds a ioctl infrastructure to issue commands to the remote endpoint of a of_graph. Currently defined ioctls are prepare/unprepare, enable/disable and get_modes. This is enough to control LVDS or HDMI encoder or simple panels. A device node which contains of_graph endpoints can be registered as a VPL entity. An entity can receive ioctls via the .ioctl callback and also issue ioctls by calling vpl_ioctl. The core itself will never iterate over the entire pipeline. Instead, the different VPL entities should forward an ioctl to the next instance in the pipeline whenever necessary. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
#ifndef __VIDEO_VPL_H
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#define __VIDEO_VPL_H
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#include <fb.h>
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#define VPL_PREPARE 0x67660001
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#define VPL_UNPREPARE 0x67660002
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#define VPL_ENABLE 0x67660003
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#define VPL_DISABLE 0x67660004
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#define VPL_GET_VIDEOMODES 0x67660005
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struct vpl {
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int (*ioctl)(struct vpl *, unsigned int port,
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unsigned int cmd, void *ptr);
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struct device_node *node;
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struct list_head list;
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};
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int vpl_register(struct vpl *);
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int vpl_ioctl(struct vpl *, unsigned int port,
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unsigned int cmd, void *ptr);
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struct vpl *of_vpl_get(struct device_node *node, int port);
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static inline int vpl_ioctl_prepare(struct vpl *vpl, unsigned int port,
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struct fb_videomode *mode)
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{
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return vpl_ioctl(vpl, port, VPL_PREPARE, mode);
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}
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static inline int vpl_ioctl_unprepare(struct vpl *vpl, unsigned int port)
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{
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return vpl_ioctl(vpl, port, VPL_UNPREPARE, NULL);
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}
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static inline int vpl_ioctl_enable(struct vpl *vpl, unsigned int port)
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{
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return vpl_ioctl(vpl, port, VPL_ENABLE, NULL);
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}
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static inline int vpl_ioctl_disable(struct vpl *vpl, unsigned int port)
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{
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return vpl_ioctl(vpl, port, VPL_DISABLE, NULL);
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}
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#endif /* __VIDEO_VPL_H */
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