/*************************************************************************** * V4L2 driver for ET61X[12]51 PC Camera Controllers * * * * Copyright (C) 2006 by Luca Risolia <luca.risolia@studio.unibo.it> * * * * This program is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the License, or * * (at your option) any later version. * * * * 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., 675 Mass Ave, Cambridge, MA 02139, USA. * ***************************************************************************/ #ifndef _ET61X251_H_ #define _ET61X251_H_ #include <linux/usb.h> #include <linux/videodev2.h> #include <media/v4l2-common.h> #include <linux/device.h> #include <linux/list.h> #include <linux/spinlock.h> #include <linux/time.h> #include <linux/wait.h> #include <linux/types.h> #include <linux/param.h> #include <linux/rwsem.h> #include <linux/mutex.h> #include <linux/stddef.h> #include <linux/string.h> #include <linux/kref.h> #include "et61x251_sensor.h" /*****************************************************************************/ #define ET61X251_DEBUG #define ET61X251_DEBUG_LEVEL 2 #define ET61X251_MAX_DEVICES 64 #define ET61X251_PRESERVE_IMGSCALE 0 #define ET61X251_FORCE_MUNMAP 0 #define ET61X251_MAX_FRAMES 32 #define ET61X251_COMPRESSION_QUALITY 0 #define ET61X251_URBS 2 #define ET61X251_ISO_PACKETS 7 #define ET61X251_ALTERNATE_SETTING 13 #define ET61X251_URB_TIMEOUT msecs_to_jiffies(2 * ET61X251_ISO_PACKETS) #define ET61X251_CTRL_TIMEOUT 100 #define ET61X251_FRAME_TIMEOUT 2 /*****************************************************************************/ static const struct usb_device_id et61x251_id_table[] = { { USB_DEVICE(0x102c, 0x6251), }, { } }; ET61X251_SENSOR_TABLE /*****************************************************************************/ enum et61x251_frame_state { F_UNUSED, F_QUEUED, F_GRABBING, F_DONE, F_ERROR, }; struct et61x251_frame_t { void* bufmem; struct v4l2_buffer buf; enum et61x251_frame_state state; struct list_head frame; unsigned long vma_use_count; }; enum et61x251_dev_state { DEV_INITIALIZED = 0x01, DEV_DISCONNECTED = 0x02, DEV_MISCONFIGURED = 0x04, }; enum et61x251_io_method { IO_NONE, IO_READ, IO_MMAP, }; enum et61x251_stream_state { STREAM_OFF, STREAM_INTERRUPT, STREAM_ON, }; struct et61x251_sysfs_attr { u8 reg, i2c_reg; }; struct et61x251_module_param { u8 force_munmap; u16 frame_timeout; }; static DEFINE_MUTEX(et61x251_sysfs_lock); static DECLARE_RWSEM(et61x251_dev_lock); struct et61x251_device { struct video_device* v4ldev; struct et61x251_sensor sensor; struct usb_device* usbdev; struct urb* urb[ET61X251_URBS]; void* transfer_buffer[ET61X251_URBS]; u8* control_buffer; struct et61x251_frame_t *frame_current, frame[ET61X251_MAX_FRAMES]; struct list_head inqueue, outqueue; u32 frame_count, nbuffers, nreadbuffers; enum et61x251_io_method io; enum et61x251_stream_state stream; struct v4l2_jpegcompression compression; struct et61x251_sysfs_attr sysfs; struct et61x251_module_param module_param; struct kref kref; enum et61x251_dev_state state; u8 users; struct completion probe; struct mutex open_mutex, fileop_mutex; spinlock_t queue_lock; wait_queue_head_t wait_open, wait_frame, wait_stream; }; /*****************************************************************************/ struct et61x251_device* et61x251_match_id(struct et61x251_device* cam, const struct usb_device_id *id) { return usb_match_id(usb_ifnum_to_if(cam->usbdev, 0), id) ? cam : NULL; } void et61x251_attach_sensor(struct et61x251_device* cam, const struct et61x251_sensor* sensor) { memcpy(&cam->sensor, sensor, sizeof(struct et61x251_sensor)); } /*****************************************************************************/ #undef DBG #undef KDBG #ifdef ET61X251_DEBUG # define DBG(level, fmt, args...) \ do { \ if (debug >= (level)) { \ if ((level) == 1) \ dev_err(&cam->usbdev->dev, fmt "\n", ## args); \ else if ((level) == 2) \ dev_info(&cam->usbdev->dev, fmt "\n", ## args); \ else if ((level) >= 3) \ dev_info(&cam->usbdev->dev, "[%s:%s:%d] " fmt "\n", \ __FILE__, __func__, __LINE__ , ## args); \ } \ } while (0) # define KDBG(level, fmt, args...) \ do { \ if (debug >= (level)) { \ if ((level) == 1 || (level) == 2) \ pr_info("et61x251: " fmt "\n", ## args); \ else if ((level) == 3) \ pr_debug("sn9c102: [%s:%s:%d] " fmt "\n", __FILE__, \ __func__, __LINE__ , ## args); \ } \ } while (0) # define V4LDBG(level, name, cmd) \ do { \ if (debug >= (level)) \ v4l_print_ioctl(name, cmd); \ } while (0) #else # define DBG(level, fmt, args...) do {;} while(0) # define KDBG(level, fmt, args...) do {;} while(0) # define V4LDBG(level, name, cmd) do {;} while(0) #endif #undef PDBG #define PDBG(fmt, args...) \ dev_info(&cam->usbdev->dev, "[%s:%s:%d] " fmt "\n", __FILE__, __func__, \ __LINE__ , ## args) #undef PDBGG #define PDBGG(fmt, args...) do {;} while(0) /* placeholder */ #endif /* _ET61X251_H_ */