2008-04-22 17:42:03 +00:00
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/*
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* camera image capture (abstract) bus driver header
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*
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* Copyright (C) 2006, Sascha Hauer, Pengutronix
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* Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef SOC_CAMERA_H
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#define SOC_CAMERA_H
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2011-07-28 21:42:57 +00:00
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#include <linux/bitops.h>
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2010-07-26 14:37:13 +00:00
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#include <linux/device.h>
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2008-12-18 15:28:54 +00:00
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#include <linux/mutex.h>
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#include <linux/pm.h>
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2008-04-22 17:42:03 +00:00
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#include <linux/videodev2.h>
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2008-07-11 23:50:31 +00:00
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#include <media/videobuf-core.h>
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2011-01-29 15:44:51 +00:00
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#include <media/videobuf2-core.h>
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2009-08-25 14:43:33 +00:00
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#include <media/v4l2-device.h>
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2008-04-22 17:42:03 +00:00
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2010-08-17 17:29:51 +00:00
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struct file;
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2011-07-15 23:03:38 +00:00
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struct soc_camera_link;
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2010-08-17 17:29:51 +00:00
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2008-04-22 17:42:03 +00:00
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struct soc_camera_device {
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2011-07-01 14:31:35 +00:00
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struct list_head list; /* list of all registered devices */
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2011-07-15 23:03:38 +00:00
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struct soc_camera_link *link;
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2009-08-25 14:43:33 +00:00
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struct device *pdev; /* Platform device */
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2011-07-15 23:03:38 +00:00
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struct device *parent; /* Camera host device */
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struct device *control; /* E.g., the i2c client */
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2009-08-25 14:50:46 +00:00
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s32 user_width;
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s32 user_height;
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2011-03-08 00:49:48 +00:00
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u32 bytesperline; /* for padding, zero if unused */
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u32 sizeimage;
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2009-12-11 14:46:49 +00:00
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enum v4l2_colorspace colorspace;
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2008-04-22 17:42:03 +00:00
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unsigned char iface; /* Host number */
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unsigned char devnum; /* Device number per host */
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2008-12-18 14:34:20 +00:00
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struct soc_camera_sense *sense; /* See comment in struct definition */
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2008-04-22 17:42:03 +00:00
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struct soc_camera_ops *ops;
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struct video_device *vdev;
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2009-12-11 14:46:49 +00:00
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const struct soc_camera_format_xlate *current_fmt;
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2008-12-01 12:45:27 +00:00
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struct soc_camera_format_xlate *user_formats;
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int num_user_formats;
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2009-03-13 09:08:20 +00:00
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enum v4l2_field field; /* Preserve field over close() */
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2008-12-18 15:28:54 +00:00
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void *host_priv; /* Per-device host private data */
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/* soc_camera.c private count. Only accessed with .video_lock held */
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2008-04-22 17:45:32 +00:00
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int use_count;
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2008-12-18 15:28:54 +00:00
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struct mutex video_lock; /* Protects device data */
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2010-08-17 17:29:51 +00:00
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struct file *streamer; /* stream owner */
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2011-01-29 15:44:51 +00:00
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union {
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struct videobuf_queue vb_vidq;
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struct vb2_queue vb2_vidq;
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};
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2008-04-22 17:42:03 +00:00
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};
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struct soc_camera_host {
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2009-08-25 14:43:33 +00:00
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struct v4l2_device v4l2_dev;
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2008-04-22 17:42:03 +00:00
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struct list_head list;
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unsigned char nr; /* Host number */
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void *priv;
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V4L/DVB (9521): V4L: struct device - replace bus_id with dev_name(), dev_set_name()
This patch is part of a larger patch series which will remove
the "char bus_id[20]" name string from struct device. The device
name is managed in the kobject anyway, and without any size
limitation, and just needlessly copied into "struct device".
To set and read the device name dev_name(dev) and dev_set_name(dev)
must be used. If your code uses static kobjects, which it shouldn't
do, "const char *init_name" can be used to statically provide the
name the registered device should have. At registration time, the
init_name field is cleared, to enforce the use of dev_name(dev) to
access the device name at a later time.
We need to get rid of all occurrences of bus_id in the entire tree
to be able to enable the new interface. Please apply this patch,
and possibly convert any remaining remaining occurrences of bus_id.
We want to submit a patch to -next, which will remove bus_id from
"struct device", to find the remaining pieces to convert, and finally
switch over to the new api, which will remove the 20 bytes array
and does no longer have a size limitation.
Thanks,
Kay
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-30 03:51:46 +00:00
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const char *drv_name;
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2008-04-04 16:41:25 +00:00
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struct soc_camera_host_ops *ops;
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};
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struct soc_camera_host_ops {
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struct module *owner;
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2008-04-22 17:42:03 +00:00
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int (*add)(struct soc_camera_device *);
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void (*remove)(struct soc_camera_device *);
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2009-08-25 14:46:43 +00:00
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/*
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* .get_formats() is called for each client device format, but
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* .put_formats() is only called once. Further, if any of the calls to
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* .get_formats() fail, .put_formats() will not be called at all, the
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* failing .get_formats() must then clean up internally.
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*/
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2010-05-08 20:55:00 +00:00
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int (*get_formats)(struct soc_camera_device *, unsigned int,
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2008-12-01 12:45:27 +00:00
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struct soc_camera_format_xlate *);
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2009-08-25 14:46:43 +00:00
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void (*put_formats)(struct soc_camera_device *);
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2009-08-25 14:50:46 +00:00
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int (*cropcap)(struct soc_camera_device *, struct v4l2_cropcap *);
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int (*get_crop)(struct soc_camera_device *, struct v4l2_crop *);
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2009-08-25 14:46:54 +00:00
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int (*set_crop)(struct soc_camera_device *, struct v4l2_crop *);
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2011-03-28 16:28:28 +00:00
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/*
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* The difference to .set_crop() is, that .set_livecrop is not allowed
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* to change the output sizes
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*/
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int (*set_livecrop)(struct soc_camera_device *, struct v4l2_crop *);
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2009-03-13 09:08:20 +00:00
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int (*set_fmt)(struct soc_camera_device *, struct v4l2_format *);
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2008-12-01 12:45:21 +00:00
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int (*try_fmt)(struct soc_camera_device *, struct v4l2_format *);
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2008-07-11 23:59:34 +00:00
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void (*init_videobuf)(struct videobuf_queue *,
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2008-07-11 23:50:31 +00:00
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struct soc_camera_device *);
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2011-01-29 15:44:51 +00:00
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int (*init_videobuf2)(struct vb2_queue *,
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struct soc_camera_device *);
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2010-08-17 17:29:51 +00:00
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int (*reqbufs)(struct soc_camera_device *, struct v4l2_requestbuffers *);
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2008-04-22 17:42:03 +00:00
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int (*querycap)(struct soc_camera_host *, struct v4l2_capability *);
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2008-03-08 00:57:18 +00:00
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int (*set_bus_param)(struct soc_camera_device *, __u32);
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2009-08-25 14:44:15 +00:00
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int (*get_ctrl)(struct soc_camera_device *, struct v4l2_control *);
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int (*set_ctrl)(struct soc_camera_device *, struct v4l2_control *);
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2010-02-09 17:00:30 +00:00
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int (*get_parm)(struct soc_camera_device *, struct v4l2_streamparm *);
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int (*set_parm)(struct soc_camera_device *, struct v4l2_streamparm *);
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2011-01-20 08:19:40 +00:00
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int (*enum_fsizes)(struct soc_camera_device *, struct v4l2_frmsizeenum *);
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2008-04-22 17:42:03 +00:00
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unsigned int (*poll)(struct file *, poll_table *);
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2009-08-25 14:44:15 +00:00
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const struct v4l2_queryctrl *controls;
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int num_controls;
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2008-04-22 17:42:03 +00:00
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};
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2008-12-23 08:54:45 +00:00
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#define SOCAM_SENSOR_INVERT_PCLK (1 << 0)
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#define SOCAM_SENSOR_INVERT_MCLK (1 << 1)
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#define SOCAM_SENSOR_INVERT_HSYNC (1 << 2)
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#define SOCAM_SENSOR_INVERT_VSYNC (1 << 3)
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#define SOCAM_SENSOR_INVERT_DATA (1 << 4)
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2009-05-07 16:25:32 +00:00
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struct i2c_board_info;
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2010-12-02 10:43:37 +00:00
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struct regulator_bulk_data;
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2009-05-07 16:25:32 +00:00
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2008-04-22 17:42:03 +00:00
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struct soc_camera_link {
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/* Camera bus id, used to match a camera and a bus */
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int bus_id;
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2008-12-23 08:54:45 +00:00
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/* Per camera SOCAM_SENSOR_* bus flags */
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unsigned long flags;
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2009-05-07 16:25:32 +00:00
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int i2c_adapter_id;
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struct i2c_board_info *board_info;
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const char *module_name;
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2009-12-11 14:15:06 +00:00
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void *priv;
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2010-12-02 10:43:37 +00:00
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/* Optional regulators that have to be managed on power on/off events */
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struct regulator_bulk_data *regulators;
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int num_regulators;
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2009-08-25 14:06:21 +00:00
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/*
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2011-07-01 14:31:35 +00:00
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* For non-I2C devices platform has to provide methods to add a device
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* to the system and to remove it
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2009-08-25 14:06:21 +00:00
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*/
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2011-07-15 23:03:38 +00:00
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int (*add_device)(struct soc_camera_device *);
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void (*del_device)(struct soc_camera_device *);
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2008-08-14 15:04:11 +00:00
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/* Optional callbacks to power on or off and reset the sensor */
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int (*power)(struct device *, int);
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int (*reset)(struct device *);
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2009-03-13 09:08:20 +00:00
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/*
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* some platforms may support different data widths than the sensors
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* native ones due to different data line routing. Let the board code
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* overwrite the width flags.
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*/
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int (*set_bus_param)(struct soc_camera_link *, unsigned long flags);
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unsigned long (*query_bus_param)(struct soc_camera_link *);
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2009-04-24 15:53:51 +00:00
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void (*free_bus)(struct soc_camera_link *);
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2008-04-22 17:42:03 +00:00
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};
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2009-08-25 14:53:23 +00:00
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static inline struct soc_camera_host *to_soc_camera_host(
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const struct device *dev)
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2008-04-22 17:42:03 +00:00
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{
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2009-08-25 14:43:33 +00:00
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struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
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return container_of(v4l2_dev, struct soc_camera_host, v4l2_dev);
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2008-04-22 17:42:03 +00:00
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}
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2009-08-25 14:53:23 +00:00
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static inline struct soc_camera_link *to_soc_camera_link(
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const struct soc_camera_device *icd)
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2009-08-25 14:28:22 +00:00
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{
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2011-07-15 23:03:38 +00:00
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return icd->link;
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2009-08-25 14:28:22 +00:00
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}
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2008-04-22 17:42:03 +00:00
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2009-08-25 14:53:23 +00:00
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static inline struct device *to_soc_camera_control(
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const struct soc_camera_device *icd)
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2009-08-25 14:28:22 +00:00
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{
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2011-07-15 23:03:38 +00:00
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return icd->control;
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2009-08-25 14:28:22 +00:00
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}
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2008-04-22 17:42:03 +00:00
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2009-08-25 14:53:23 +00:00
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static inline struct v4l2_subdev *soc_camera_to_subdev(
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const struct soc_camera_device *icd)
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2009-08-25 14:46:59 +00:00
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{
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struct device *control = to_soc_camera_control(icd);
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return dev_get_drvdata(control);
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}
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2009-08-25 14:28:22 +00:00
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int soc_camera_host_register(struct soc_camera_host *ici);
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void soc_camera_host_unregister(struct soc_camera_host *ici);
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const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc(
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2008-12-01 12:45:27 +00:00
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struct soc_camera_device *icd, unsigned int fourcc);
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2008-12-01 12:44:59 +00:00
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2008-12-01 12:45:27 +00:00
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/**
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* struct soc_camera_format_xlate - match between host and sensor formats
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2009-12-11 14:46:49 +00:00
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* @code: code of a sensor provided format
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* @host_fmt: host format after host translation from code
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2008-12-01 12:45:27 +00:00
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*
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* Host and sensor translation structure. Used in table of host and sensor
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* formats matchings in soc_camera_device. A host can override the generic list
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* generation by implementing get_formats(), and use it for format checks and
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* format setup.
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*/
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struct soc_camera_format_xlate {
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2009-12-11 14:46:49 +00:00
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enum v4l2_mbus_pixelcode code;
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const struct soc_mbus_pixelfmt *host_fmt;
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2008-12-01 12:45:27 +00:00
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};
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2008-04-22 17:42:03 +00:00
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struct soc_camera_ops {
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const struct v4l2_queryctrl *controls;
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int num_controls;
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};
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2008-12-18 14:34:20 +00:00
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#define SOCAM_SENSE_PCLK_CHANGED (1 << 0)
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/**
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* This struct can be attached to struct soc_camera_device by the host driver
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* to request sense from the camera, for example, when calling .set_fmt(). The
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* host then can check which flags are set and verify respective values if any.
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* For example, if SOCAM_SENSE_PCLK_CHANGED is set, it means, pixclock has
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* changed during this operation. After completion the host should detach sense.
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*
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* @flags ored SOCAM_SENSE_* flags
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* @master_clock if the host wants to be informed about pixel-clock
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* change, it better set master_clock.
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* @pixel_clock_max maximum pixel clock frequency supported by the host,
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* camera is not allowed to exceed this.
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* @pixel_clock if the camera driver changed pixel clock during this
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* operation, it sets SOCAM_SENSE_PCLK_CHANGED, uses
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* master_clock to calculate the new pixel-clock and
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* sets this field.
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*/
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struct soc_camera_sense {
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unsigned long flags;
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unsigned long master_clock;
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unsigned long pixel_clock_max;
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unsigned long pixel_clock;
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};
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2008-04-22 17:42:03 +00:00
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static inline struct v4l2_queryctrl const *soc_camera_find_qctrl(
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struct soc_camera_ops *ops, int id)
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{
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int i;
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for (i = 0; i < ops->num_controls; i++)
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if (ops->controls[i].id == id)
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return &ops->controls[i];
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return NULL;
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}
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2011-07-28 21:42:57 +00:00
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#define SOCAM_DATAWIDTH(x) BIT((x) - 1)
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#define SOCAM_DATAWIDTH_4 SOCAM_DATAWIDTH(4)
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#define SOCAM_DATAWIDTH_8 SOCAM_DATAWIDTH(8)
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#define SOCAM_DATAWIDTH_9 SOCAM_DATAWIDTH(9)
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#define SOCAM_DATAWIDTH_10 SOCAM_DATAWIDTH(10)
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#define SOCAM_DATAWIDTH_15 SOCAM_DATAWIDTH(15)
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#define SOCAM_DATAWIDTH_16 SOCAM_DATAWIDTH(16)
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2008-12-19 13:07:49 +00:00
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#define SOCAM_DATAWIDTH_MASK (SOCAM_DATAWIDTH_4 | SOCAM_DATAWIDTH_8 | \
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SOCAM_DATAWIDTH_9 | SOCAM_DATAWIDTH_10 | \
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SOCAM_DATAWIDTH_15 | SOCAM_DATAWIDTH_16)
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2008-03-08 00:57:18 +00:00
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2010-02-24 20:13:29 +00:00
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static inline void soc_camera_limit_side(int *start, int *length,
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unsigned int start_min,
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2009-08-25 14:50:46 +00:00
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unsigned int length_min, unsigned int length_max)
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{
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if (*length < length_min)
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*length = length_min;
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else if (*length > length_max)
|
|
|
|
*length = length_max;
|
|
|
|
|
|
|
|
if (*start < start_min)
|
|
|
|
*start = start_min;
|
|
|
|
else if (*start > start_min + length_max - *length)
|
|
|
|
*start = start_min + length_max - *length;
|
|
|
|
}
|
|
|
|
|
2011-07-26 14:38:01 +00:00
|
|
|
unsigned long soc_camera_apply_sensor_flags(struct soc_camera_link *icl,
|
|
|
|
unsigned long flags);
|
|
|
|
unsigned long soc_camera_apply_board_flags(struct soc_camera_link *icl,
|
|
|
|
const struct v4l2_mbus_config *cfg);
|
2008-12-23 08:54:45 +00:00
|
|
|
|
2010-05-18 03:46:09 +00:00
|
|
|
/* This is only temporary here - until v4l2-subdev begins to link to video_device */
|
|
|
|
#include <linux/i2c.h>
|
|
|
|
static inline struct video_device *soc_camera_i2c_to_vdev(struct i2c_client *client)
|
|
|
|
{
|
|
|
|
struct soc_camera_device *icd = client->dev.platform_data;
|
|
|
|
return icd->vdev;
|
|
|
|
}
|
|
|
|
|
2011-02-07 21:09:30 +00:00
|
|
|
static inline struct soc_camera_device *soc_camera_from_vb2q(struct vb2_queue *vq)
|
|
|
|
{
|
|
|
|
return container_of(vq, struct soc_camera_device, vb2_vidq);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline struct soc_camera_device *soc_camera_from_vbq(struct videobuf_queue *vq)
|
|
|
|
{
|
|
|
|
return container_of(vq, struct soc_camera_device, vb_vidq);
|
|
|
|
}
|
|
|
|
|
2011-01-29 15:44:51 +00:00
|
|
|
void soc_camera_lock(struct vb2_queue *vq);
|
|
|
|
void soc_camera_unlock(struct vb2_queue *vq);
|
|
|
|
|
2008-04-22 17:42:03 +00:00
|
|
|
#endif
|