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- /*
- * include/media/v4l2-int-device.h
- *
- * V4L2 internal ioctl interface.
- *
- * Copyright (C) 2007 Nokia Corporation.
- *
- * Contact: Sakari Ailus <sakari.ailus@nokia.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.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- */
- #ifndef V4L2_INT_DEVICE_H
- #define V4L2_INT_DEVICE_H
- #include <linux/module.h>
- #include <media/v4l2-common.h>
- #define V4L2NAMESIZE 32
- enum v4l2_int_type {
- v4l2_int_type_master = 1,
- v4l2_int_type_slave
- };
- enum v4l2_int_ioctl_num {
- /*
- *
- * "Proper" V4L ioctls, as in struct video_device.
- *
- */
- vidioc_int_enum_fmt_cap_num = 1,
- vidioc_int_g_fmt_cap_num,
- vidioc_int_s_fmt_cap_num,
- vidioc_int_try_fmt_cap_num,
- vidioc_int_queryctrl_num,
- vidioc_int_g_ctrl_num,
- vidioc_int_s_ctrl_num,
- vidioc_int_g_parm_num,
- vidioc_int_s_parm_num,
- /*
- *
- * Strictly internal ioctls.
- *
- */
- /* Initialise the device when slave attaches to the master. */
- vidioc_int_dev_init_num = 1000,
- /* Delinitialise the device at slave detach. */
- vidioc_int_dev_exit_num,
- /* Set device power state: 0 is off, non-zero is on. */
- vidioc_int_s_power_num,
- /* Get parallel interface clock speed for current settings. */
- vidioc_int_g_ext_clk_num,
- /*
- * Tell what the parallel interface clock speed actually is.
- */
- vidioc_int_s_ext_clk_num,
- /* Does the slave need to be reset after VIDIOC_DQBUF? */
- vidioc_int_g_needs_reset_num,
- /*
- *
- * VIDIOC_INT_* ioctls.
- *
- */
- /* VIDIOC_INT_RESET */
- vidioc_int_reset_num,
- /* VIDIOC_INT_INIT */
- vidioc_int_init_num,
- /* VIDIOC_INT_G_CHIP_IDENT */
- vidioc_int_g_chip_ident_num,
- /*
- *
- * Start of private ioctls.
- *
- */
- vidioc_int_priv_start_num = 2000,
- };
- struct v4l2_int_device;
- struct v4l2_int_master {
- int (*attach)(struct v4l2_int_device *master,
- struct v4l2_int_device *slave);
- void (*detach)(struct v4l2_int_device *master);
- };
- typedef int (v4l2_int_ioctl_func)(struct v4l2_int_device *);
- typedef int (v4l2_int_ioctl_func_0)(struct v4l2_int_device *);
- typedef int (v4l2_int_ioctl_func_1)(struct v4l2_int_device *, void *);
- struct v4l2_int_ioctl_desc {
- int num;
- v4l2_int_ioctl_func *func;
- };
- struct v4l2_int_slave {
- /* Don't touch master. */
- struct v4l2_int_device *master;
- char attach_to[V4L2NAMESIZE];
- int num_ioctls;
- struct v4l2_int_ioctl_desc *ioctls;
- };
- struct v4l2_int_device {
- /* Don't touch head. */
- struct list_head head;
- struct module *module;
- char name[V4L2NAMESIZE];
- enum v4l2_int_type type;
- union {
- struct v4l2_int_master *master;
- struct v4l2_int_slave *slave;
- } u;
- void *priv;
- };
- int v4l2_int_device_register(struct v4l2_int_device *d);
- void v4l2_int_device_unregister(struct v4l2_int_device *d);
- int v4l2_int_ioctl_0(struct v4l2_int_device *d, int cmd);
- int v4l2_int_ioctl_1(struct v4l2_int_device *d, int cmd, void *arg);
- /*
- *
- * IOCTL wrapper functions for better type checking.
- *
- */
- #define V4L2_INT_WRAPPER_0(name) \
- static inline int vidioc_int_##name(struct v4l2_int_device *d) \
- { \
- return v4l2_int_ioctl_0(d, vidioc_int_##name##_num); \
- } \
- \
- static inline struct v4l2_int_ioctl_desc \
- vidioc_int_##name##_cb(int (*func) \
- (struct v4l2_int_device *)) \
- { \
- struct v4l2_int_ioctl_desc desc; \
- \
- desc.num = vidioc_int_##name##_num; \
- desc.func = (v4l2_int_ioctl_func *)func; \
- \
- return desc; \
- }
- #define V4L2_INT_WRAPPER_1(name, arg_type, asterisk) \
- static inline int vidioc_int_##name(struct v4l2_int_device *d, \
- arg_type asterisk arg) \
- { \
- return v4l2_int_ioctl_1(d, vidioc_int_##name##_num, \
- (void *)arg); \
- } \
- \
- static inline struct v4l2_int_ioctl_desc \
- vidioc_int_##name##_cb(int (*func) \
- (struct v4l2_int_device *, \
- arg_type asterisk)) \
- { \
- struct v4l2_int_ioctl_desc desc; \
- \
- desc.num = vidioc_int_##name##_num; \
- desc.func = (v4l2_int_ioctl_func *)func; \
- \
- return desc; \
- }
- V4L2_INT_WRAPPER_1(enum_fmt_cap, struct v4l2_fmtdesc, *);
- V4L2_INT_WRAPPER_1(g_fmt_cap, struct v4l2_format, *);
- V4L2_INT_WRAPPER_1(s_fmt_cap, struct v4l2_format, *);
- V4L2_INT_WRAPPER_1(try_fmt_cap, struct v4l2_format, *);
- V4L2_INT_WRAPPER_1(queryctrl, struct v4l2_queryctrl, *);
- V4L2_INT_WRAPPER_1(g_ctrl, struct v4l2_control, *);
- V4L2_INT_WRAPPER_1(s_ctrl, struct v4l2_control, *);
- V4L2_INT_WRAPPER_1(g_parm, struct v4l2_streamparm, *);
- V4L2_INT_WRAPPER_1(s_parm, struct v4l2_streamparm, *);
- V4L2_INT_WRAPPER_0(dev_init);
- V4L2_INT_WRAPPER_0(dev_exit);
- V4L2_INT_WRAPPER_1(s_power, int, );
- V4L2_INT_WRAPPER_1(s_ext_clk, u32, );
- V4L2_INT_WRAPPER_1(g_ext_clk, u32, *);
- V4L2_INT_WRAPPER_1(g_needs_reset, void, *);
- V4L2_INT_WRAPPER_0(reset);
- V4L2_INT_WRAPPER_0(init);
- V4L2_INT_WRAPPER_1(g_chip_ident, int, *);
- #endif
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