diff options
Diffstat (limited to 'drivers/media/usb/sn9c102/sn9c102.h')
| -rw-r--r-- | drivers/media/usb/sn9c102/sn9c102.h | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/drivers/media/usb/sn9c102/sn9c102.h b/drivers/media/usb/sn9c102/sn9c102.h new file mode 100644 index 00000000000..2bc153e869b --- /dev/null +++ b/drivers/media/usb/sn9c102/sn9c102.h @@ -0,0 +1,211 @@ +/*************************************************************************** + * V4L2 driver for SN9C1xx PC Camera Controllers * + * * + * Copyright (C) 2004-2006 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 _SN9C102_H_ +#define _SN9C102_H_ + +#include <linux/usb.h> +#include <linux/videodev2.h> +#include <media/v4l2-common.h> +#include <media/v4l2-ioctl.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/string.h> +#include <linux/stddef.h> +#include <linux/kref.h> + +#include "sn9c102_config.h" +#include "sn9c102_sensor.h" +#include "sn9c102_devtable.h" + + +enum sn9c102_frame_state { + F_UNUSED, + F_QUEUED, + F_GRABBING, + F_DONE, + F_ERROR, +}; + +struct sn9c102_frame_t { + void* bufmem; + struct v4l2_buffer buf; + enum sn9c102_frame_state state; + struct list_head frame; + unsigned long vma_use_count; +}; + +enum sn9c102_dev_state { + DEV_INITIALIZED = 0x01, + DEV_DISCONNECTED = 0x02, + DEV_MISCONFIGURED = 0x04, +}; + +enum sn9c102_io_method { + IO_NONE, + IO_READ, + IO_MMAP, +}; + +enum sn9c102_stream_state { + STREAM_OFF, + STREAM_INTERRUPT, + STREAM_ON, +}; + +typedef char sn9c102_sof_header_t[62]; + +struct sn9c102_sof_t { + sn9c102_sof_header_t header; + u16 bytesread; +}; + +struct sn9c102_sysfs_attr { + u16 reg, i2c_reg; + sn9c102_sof_header_t frame_header; +}; + +struct sn9c102_module_param { + u8 force_munmap; + u16 frame_timeout; +}; + +static DEFINE_MUTEX(sn9c102_sysfs_lock); +static DECLARE_RWSEM(sn9c102_dev_lock); + +struct sn9c102_device { + struct video_device* v4ldev; + + enum sn9c102_bridge bridge; + struct sn9c102_sensor sensor; + + struct usb_device* usbdev; + struct urb* urb[SN9C102_URBS]; + void* transfer_buffer[SN9C102_URBS]; + u8* control_buffer; + + struct sn9c102_frame_t *frame_current, frame[SN9C102_MAX_FRAMES]; + struct list_head inqueue, outqueue; + u32 frame_count, nbuffers, nreadbuffers; + + enum sn9c102_io_method io; + enum sn9c102_stream_state stream; + + struct v4l2_jpegcompression compression; + + struct sn9c102_sysfs_attr sysfs; + struct sn9c102_sof_t sof; + u16 reg[384]; + + struct sn9c102_module_param module_param; + + struct kref kref; + enum sn9c102_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 sn9c102_device* +sn9c102_match_id(struct sn9c102_device* cam, const struct usb_device_id *id) +{ + return usb_match_id(usb_ifnum_to_if(cam->usbdev, 0), id) ? cam : NULL; +} + + +void +sn9c102_attach_sensor(struct sn9c102_device* cam, + const struct sn9c102_sensor* sensor) +{ + memcpy(&cam->sensor, sensor, sizeof(struct sn9c102_sensor)); +} + + +enum sn9c102_bridge +sn9c102_get_bridge(struct sn9c102_device* cam) +{ + return cam->bridge; +} + + +struct sn9c102_sensor* sn9c102_get_sensor(struct sn9c102_device* cam) +{ + return &cam->sensor; +} + +/*****************************************************************************/ + +#undef DBG +#undef KDBG +#ifdef SN9C102_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:%d] " fmt "\n", \ + __func__, __LINE__ , ## args); \ + } \ +} while (0) +# define V4LDBG(level, name, cmd) \ +do { \ + if (debug >= (level)) \ + v4l_printk_ioctl(name, cmd); \ +} while (0) +# define KDBG(level, fmt, args...) \ +do { \ + if (debug >= (level)) { \ + if ((level) == 1 || (level) == 2) \ + pr_info("sn9c102: " fmt "\n", ## args); \ + else if ((level) == 3) \ + pr_debug("sn9c102: [%s:%d] " fmt "\n", \ + __func__, __LINE__ , ## args); \ + } \ +} while (0) +#else +# define DBG(level, fmt, args...) do {;} while(0) +# define V4LDBG(level, name, cmd) do {;} while(0) +# define KDBG(level, fmt, args...) 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 /* _SN9C102_H_ */ |