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3b2ae0be9e
- Make the driver depend on V4L2 only (KConfig) - Better and safe locking mechanism of the device structure on open(), close() and disconnect() - Use kref for handling device deallocation - Generic cleanups Signed-off-by: Luca Risolia <luca.risolia@studio.unibo.it> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
117 lines
4.5 KiB
C
117 lines
4.5 KiB
C
/***************************************************************************
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* API for image sensors connected to ET61X[12]51 PC Camera Controllers *
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* *
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* Copyright (C) 2006-2007 by Luca Risolia <luca.risolia@studio.unibo.it> *
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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 as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software *
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
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***************************************************************************/
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#ifndef _ET61X251_SENSOR_H_
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#define _ET61X251_SENSOR_H_
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#include <linux/usb.h>
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#include <linux/videodev2.h>
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#include <linux/device.h>
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#include <linux/stddef.h>
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#include <linux/errno.h>
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#include <asm/types.h>
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struct et61x251_device;
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struct et61x251_sensor;
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/*****************************************************************************/
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extern int et61x251_probe_tas5130d1b(struct et61x251_device* cam);
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#define ET61X251_SENSOR_TABLE \
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/* Weak detections must go at the end of the list */ \
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static int (*et61x251_sensor_table[])(struct et61x251_device*) = { \
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&et61x251_probe_tas5130d1b, \
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NULL, \
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};
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extern struct et61x251_device*
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et61x251_match_id(struct et61x251_device* cam, const struct usb_device_id *id);
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extern void
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et61x251_attach_sensor(struct et61x251_device* cam,
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const struct et61x251_sensor* sensor);
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/*****************************************************************************/
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extern int et61x251_write_reg(struct et61x251_device*, u8 value, u16 index);
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extern int et61x251_read_reg(struct et61x251_device*, u16 index);
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extern int et61x251_i2c_write(struct et61x251_device*, u8 address, u8 value);
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extern int et61x251_i2c_read(struct et61x251_device*, u8 address);
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extern int et61x251_i2c_try_write(struct et61x251_device*,
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const struct et61x251_sensor*, u8 address,
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u8 value);
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extern int et61x251_i2c_try_read(struct et61x251_device*,
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const struct et61x251_sensor*, u8 address);
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extern int et61x251_i2c_raw_write(struct et61x251_device*, u8 n, u8 data1,
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u8 data2, u8 data3, u8 data4, u8 data5,
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u8 data6, u8 data7, u8 data8, u8 address);
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/*****************************************************************************/
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enum et61x251_i2c_sysfs_ops {
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ET61X251_I2C_READ = 0x01,
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ET61X251_I2C_WRITE = 0x02,
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};
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enum et61x251_i2c_interface {
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ET61X251_I2C_2WIRES,
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ET61X251_I2C_3WIRES,
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};
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/* Repeat start condition when RSTA is high */
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enum et61x251_i2c_rsta {
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ET61X251_I2C_RSTA_STOP = 0x00, /* stop then start */
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ET61X251_I2C_RSTA_REPEAT = 0x01, /* repeat start */
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};
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#define ET61X251_MAX_CTRLS (V4L2_CID_LASTP1-V4L2_CID_BASE+10)
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struct et61x251_sensor {
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char name[32];
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enum et61x251_i2c_sysfs_ops sysfs_ops;
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enum et61x251_i2c_interface interface;
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u8 i2c_slave_id;
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enum et61x251_i2c_rsta rsta;
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struct v4l2_rect active_pixel; /* left and top define FVSX and FVSY */
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struct v4l2_queryctrl qctrl[ET61X251_MAX_CTRLS];
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struct v4l2_cropcap cropcap;
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struct v4l2_pix_format pix_format;
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int (*init)(struct et61x251_device* cam);
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int (*get_ctrl)(struct et61x251_device* cam,
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struct v4l2_control* ctrl);
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int (*set_ctrl)(struct et61x251_device* cam,
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const struct v4l2_control* ctrl);
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int (*set_crop)(struct et61x251_device* cam,
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const struct v4l2_rect* rect);
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int (*set_pix_format)(struct et61x251_device* cam,
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const struct v4l2_pix_format* pix);
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/* Private */
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struct v4l2_queryctrl _qctrl[ET61X251_MAX_CTRLS];
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struct v4l2_rect _rect;
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};
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#endif /* _ET61X251_SENSOR_H_ */
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