| /*************************************************************************** |
| * V4L2 driver for SN9C1xx PC Camera Controllers * |
| * * |
| * Copyright (C) 2004-2007 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. * |
| ***************************************************************************/ |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/kernel.h> |
| #include <linux/param.h> |
| #include <linux/errno.h> |
| #include <linux/slab.h> |
| #include <linux/device.h> |
| #include <linux/fs.h> |
| #include <linux/delay.h> |
| #include <linux/compiler.h> |
| #include <linux/ioctl.h> |
| #include <linux/poll.h> |
| #include <linux/stat.h> |
| #include <linux/mm.h> |
| #include <linux/vmalloc.h> |
| #include <linux/version.h> |
| #include <linux/page-flags.h> |
| #include <asm/byteorder.h> |
| #include <asm/page.h> |
| #include <asm/uaccess.h> |
| |
| #include "sn9c102.h" |
| |
| /*****************************************************************************/ |
| |
| #define SN9C102_MODULE_NAME "V4L2 driver for SN9C1xx PC Camera Controllers" |
| #define SN9C102_MODULE_ALIAS "sn9c1xx" |
| #define SN9C102_MODULE_AUTHOR "(C) 2004-2007 Luca Risolia" |
| #define SN9C102_AUTHOR_EMAIL "<luca.risolia@studio.unibo.it>" |
| #define SN9C102_MODULE_LICENSE "GPL" |
| #define SN9C102_MODULE_VERSION "1:1.48" |
| |
| /*****************************************************************************/ |
| |
| MODULE_DEVICE_TABLE(usb, sn9c102_id_table); |
| |
| MODULE_AUTHOR(SN9C102_MODULE_AUTHOR " " SN9C102_AUTHOR_EMAIL); |
| MODULE_DESCRIPTION(SN9C102_MODULE_NAME); |
| MODULE_ALIAS(SN9C102_MODULE_ALIAS); |
| MODULE_VERSION(SN9C102_MODULE_VERSION); |
| MODULE_LICENSE(SN9C102_MODULE_LICENSE); |
| |
| static short video_nr[] = {[0 ... SN9C102_MAX_DEVICES-1] = -1}; |
| module_param_array(video_nr, short, NULL, 0444); |
| MODULE_PARM_DESC(video_nr, |
| " <-1|n[,...]>" |
| "\nSpecify V4L2 minor mode number." |
| "\n-1 = use next available (default)" |
| "\n n = use minor number n (integer >= 0)" |
| "\nYou can specify up to "__MODULE_STRING(SN9C102_MAX_DEVICES) |
| " cameras this way." |
| "\nFor example:" |
| "\nvideo_nr=-1,2,-1 would assign minor number 2 to" |
| "\nthe second camera and use auto for the first" |
| "\none and for every other camera." |
| "\n"); |
| |
| static bool force_munmap[] = {[0 ... SN9C102_MAX_DEVICES-1] = |
| SN9C102_FORCE_MUNMAP}; |
| module_param_array(force_munmap, bool, NULL, 0444); |
| MODULE_PARM_DESC(force_munmap, |
| " <0|1[,...]>" |
| "\nForce the application to unmap previously" |
| "\nmapped buffer memory before calling any VIDIOC_S_CROP or" |
| "\nVIDIOC_S_FMT ioctl's. Not all the applications support" |
| "\nthis feature. This parameter is specific for each" |
| "\ndetected camera." |
| "\n0 = do not force memory unmapping" |
| "\n1 = force memory unmapping (save memory)" |
| "\nDefault value is "__MODULE_STRING(SN9C102_FORCE_MUNMAP)"." |
| "\n"); |
| |
| static unsigned int frame_timeout[] = {[0 ... SN9C102_MAX_DEVICES-1] = |
| SN9C102_FRAME_TIMEOUT}; |
| module_param_array(frame_timeout, uint, NULL, 0644); |
| MODULE_PARM_DESC(frame_timeout, |
| " <0|n[,...]>" |
| "\nTimeout for a video frame in seconds before" |
| "\nreturning an I/O error; 0 for infinity." |
| "\nThis parameter is specific for each detected camera." |
| "\nDefault value is "__MODULE_STRING(SN9C102_FRAME_TIMEOUT)"." |
| "\n"); |
| |
| #ifdef SN9C102_DEBUG |
| static unsigned short debug = SN9C102_DEBUG_LEVEL; |
| module_param(debug, ushort, 0644); |
| MODULE_PARM_DESC(debug, |
| " <n>" |
| "\nDebugging information level, from 0 to 3:" |
| "\n0 = none (use carefully)" |
| "\n1 = critical errors" |
| "\n2 = significant informations" |
| "\n3 = more verbose messages" |
| "\nLevel 3 is useful for testing only." |
| "\nDefault value is "__MODULE_STRING(SN9C102_DEBUG_LEVEL)"." |
| "\n"); |
| #endif |
| |
| /* |
| Add the probe entries to this table. Be sure to add the entry in the right |
| place, since, on failure, the next probing routine is called according to |
| the order of the list below, from top to bottom. |
| */ |
| static int (*sn9c102_sensor_table[])(struct sn9c102_device *) = { |
| &sn9c102_probe_hv7131d, /* strong detection based on SENSOR ids */ |
| &sn9c102_probe_hv7131r, /* strong detection based on SENSOR ids */ |
| &sn9c102_probe_mi0343, /* strong detection based on SENSOR ids */ |
| &sn9c102_probe_mi0360, /* strong detection based on SENSOR ids */ |
| &sn9c102_probe_mt9v111, /* strong detection based on SENSOR ids */ |
| &sn9c102_probe_pas106b, /* strong detection based on SENSOR ids */ |
| &sn9c102_probe_pas202bcb, /* strong detection based on SENSOR ids */ |
| &sn9c102_probe_ov7630, /* strong detection based on SENSOR ids */ |
| &sn9c102_probe_ov7660, /* strong detection based on SENSOR ids */ |
| &sn9c102_probe_tas5110c1b, /* detection based on USB pid/vid */ |
| &sn9c102_probe_tas5110d, /* detection based on USB pid/vid */ |
| &sn9c102_probe_tas5130d1b, /* detection based on USB pid/vid */ |
| }; |
| |
| /*****************************************************************************/ |
| |
| static u32 |
| sn9c102_request_buffers(struct sn9c102_device* cam, u32 count, |
| enum sn9c102_io_method io) |
| { |
| struct v4l2_pix_format* p = &(cam->sensor.pix_format); |
| struct v4l2_rect* r = &(cam->sensor.cropcap.bounds); |
| size_t imagesize = cam->module_param.force_munmap || io == IO_READ ? |
| (p->width * p->height * p->priv) / 8 : |
| (r->width * r->height * p->priv) / 8; |
| void* buff = NULL; |
| u32 i; |
| |
| if (count > SN9C102_MAX_FRAMES) |
| count = SN9C102_MAX_FRAMES; |
| |
| if (cam->bridge == BRIDGE_SN9C105 || cam->bridge == BRIDGE_SN9C120) |
| imagesize += 589 + 2; /* length of JPEG header + EOI marker */ |
| |
| cam->nbuffers = count; |
| while (cam->nbuffers > 0) { |
| if ((buff = vmalloc_32_user(cam->nbuffers * |
| PAGE_ALIGN(imagesize)))) |
| break; |
| cam->nbuffers--; |
| } |
| |
| for (i = 0; i < cam->nbuffers; i++) { |
| cam->frame[i].bufmem = buff + i*PAGE_ALIGN(imagesize); |
| cam->frame[i].buf.index = i; |
| cam->frame[i].buf.m.offset = i*PAGE_ALIGN(imagesize); |
| cam->frame[i].buf.length = imagesize; |
| cam->frame[i].buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| cam->frame[i].buf.sequence = 0; |
| cam->frame[i].buf.field = V4L2_FIELD_NONE; |
| cam->frame[i].buf.memory = V4L2_MEMORY_MMAP; |
| cam->frame[i].buf.flags = 0; |
| } |
| |
| return cam->nbuffers; |
| } |
| |
| |
| static void sn9c102_release_buffers(struct sn9c102_device* cam) |
| { |
| if (cam->nbuffers) { |
| vfree(cam->frame[0].bufmem); |
| cam->nbuffers = 0; |
| } |
| cam->frame_current = NULL; |
| } |
| |
| |
| static void sn9c102_empty_framequeues(struct sn9c102_device* cam) |
| { |
| u32 i; |
| |
| INIT_LIST_HEAD(&cam->inqueue); |
| INIT_LIST_HEAD(&cam->outqueue); |
| |
| for (i = 0; i < SN9C102_MAX_FRAMES; i++) { |
| cam->frame[i].state = F_UNUSED; |
| cam->frame[i].buf.bytesused = 0; |
| } |
| } |
| |
| |
| static void sn9c102_requeue_outqueue(struct sn9c102_device* cam) |
| { |
| struct sn9c102_frame_t *i; |
| |
| list_for_each_entry(i, &cam->outqueue, frame) { |
| i->state = F_QUEUED; |
| list_add(&i->frame, &cam->inqueue); |
| } |
| |
| INIT_LIST_HEAD(&cam->outqueue); |
| } |
| |
| |
| static void sn9c102_queue_unusedframes(struct sn9c102_device* cam) |
| { |
| unsigned long lock_flags; |
| u32 i; |
| |
| for (i = 0; i < cam->nbuffers; i++) |
| if (cam->frame[i].state == F_UNUSED) { |
| cam->frame[i].state = F_QUEUED; |
| spin_lock_irqsave(&cam->queue_lock, lock_flags); |
| list_add_tail(&cam->frame[i].frame, &cam->inqueue); |
| spin_unlock_irqrestore(&cam->queue_lock, lock_flags); |
| } |
| } |
| |
| /*****************************************************************************/ |
| |
| /* |
| Write a sequence of count value/register pairs. Returns -1 after the first |
| failed write, or 0 for no errors. |
| */ |
| int sn9c102_write_regs(struct sn9c102_device* cam, const u8 valreg[][2], |
| int count) |
| { |
| struct usb_device* udev = cam->usbdev; |
| u8* buff = cam->control_buffer; |
| int i, res; |
| |
| for (i = 0; i < count; i++) { |
| u8 index = valreg[i][1]; |
| |
| /* |
| index is a u8, so it must be <256 and can't be out of range. |
| If we put in a check anyway, gcc annoys us with a warning |
| hat our check is useless. People get all uppity when they |
| see warnings in the kernel compile. |
| */ |
| |
| *buff = valreg[i][0]; |
| |
| res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x08, |
| 0x41, index, 0, buff, 1, |
| SN9C102_CTRL_TIMEOUT); |
| |
| if (res < 0) { |
| DBG(3, "Failed to write a register (value 0x%02X, " |
| "index 0x%02X, error %d)", *buff, index, res); |
| return -1; |
| } |
| |
| cam->reg[index] = *buff; |
| } |
| |
| return 0; |
| } |
| |
| |
| int sn9c102_write_reg(struct sn9c102_device* cam, u8 value, u16 index) |
| { |
| struct usb_device* udev = cam->usbdev; |
| u8* buff = cam->control_buffer; |
| int res; |
| |
| if (index >= ARRAY_SIZE(cam->reg)) |
| return -1; |
| |
| *buff = value; |
| |
| res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x08, 0x41, |
| index, 0, buff, 1, SN9C102_CTRL_TIMEOUT); |
| if (res < 0) { |
| DBG(3, "Failed to write a register (value 0x%02X, index " |
| "0x%02X, error %d)", value, index, res); |
| return -1; |
| } |
| |
| cam->reg[index] = value; |
| |
| return 0; |
| } |
| |
| |
| /* NOTE: with the SN9C10[123] reading some registers always returns 0 */ |
| int sn9c102_read_reg(struct sn9c102_device* cam, u16 index) |
| { |
| struct usb_device* udev = cam->usbdev; |
| u8* buff = cam->control_buffer; |
| int res; |
| |
| res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00, 0xc1, |
| index, 0, buff, 1, SN9C102_CTRL_TIMEOUT); |
| if (res < 0) |
| DBG(3, "Failed to read a register (index 0x%02X, error %d)", |
| index, res); |
| |
| return (res >= 0) ? (int)(*buff) : -1; |
| } |
| |
| |
| int sn9c102_pread_reg(struct sn9c102_device* cam, u16 index) |
| { |
| if (index >= ARRAY_SIZE(cam->reg)) |
| return -1; |
| |
| return cam->reg[index]; |
| } |
| |
| |
| static int |
| sn9c102_i2c_wait(struct sn9c102_device* cam, |
| const struct sn9c102_sensor* sensor) |
| { |
| int i, r; |
| |
| for (i = 1; i <= 5; i++) { |
| r = sn9c102_read_reg(cam, 0x08); |
| if (r < 0) |
| return -EIO; |
| if (r & 0x04) |
| return 0; |
| if (sensor->frequency & SN9C102_I2C_400KHZ) |
| udelay(5*16); |
| else |
| udelay(16*16); |
| } |
| return -EBUSY; |
| } |
| |
| |
| static int |
| sn9c102_i2c_detect_read_error(struct sn9c102_device* cam, |
| const struct sn9c102_sensor* sensor) |
| { |
| int r , err = 0; |
| |
| r = sn9c102_read_reg(cam, 0x08); |
| if (r < 0) |
| err += r; |
| |
| if (cam->bridge == BRIDGE_SN9C101 || cam->bridge == BRIDGE_SN9C102) { |
| if (!(r & 0x08)) |
| err += -1; |
| } else { |
| if (r & 0x08) |
| err += -1; |
| } |
| |
| return err ? -EIO : 0; |
| } |
| |
| |
| static int |
| sn9c102_i2c_detect_write_error(struct sn9c102_device* cam, |
| const struct sn9c102_sensor* sensor) |
| { |
| int r; |
| r = sn9c102_read_reg(cam, 0x08); |
| return (r < 0 || (r >= 0 && (r & 0x08))) ? -EIO : 0; |
| } |
| |
| |
| int |
| sn9c102_i2c_try_raw_read(struct sn9c102_device* cam, |
| const struct sn9c102_sensor* sensor, u8 data0, |
| u8 data1, u8 n, u8 buffer[]) |
| { |
| struct usb_device* udev = cam->usbdev; |
| u8* data = cam->control_buffer; |
| int i = 0, err = 0, res; |
| |
| /* Write cycle */ |
| data[0] = ((sensor->interface == SN9C102_I2C_2WIRES) ? 0x80 : 0) | |
| ((sensor->frequency & SN9C102_I2C_400KHZ) ? 0x01 : 0) | 0x10; |
| data[1] = data0; /* I2C slave id */ |
| data[2] = data1; /* address */ |
| data[7] = 0x10; |
| res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x08, 0x41, |
| 0x08, 0, data, 8, SN9C102_CTRL_TIMEOUT); |
| if (res < 0) |
| err += res; |
| |
| err += sn9c102_i2c_wait(cam, sensor); |
| |
| /* Read cycle - n bytes */ |
| data[0] = ((sensor->interface == SN9C102_I2C_2WIRES) ? 0x80 : 0) | |
| ((sensor->frequency & SN9C102_I2C_400KHZ) ? 0x01 : 0) | |
| (n << 4) | 0x02; |
| data[1] = data0; |
| data[7] = 0x10; |
| res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x08, 0x41, |
| 0x08, 0, data, 8, SN9C102_CTRL_TIMEOUT); |
| if (res < 0) |
| err += res; |
| |
| err += sn9c102_i2c_wait(cam, sensor); |
| |
| /* The first read byte will be placed in data[4] */ |
| res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00, 0xc1, |
| 0x0a, 0, data, 5, SN9C102_CTRL_TIMEOUT); |
| if (res < 0) |
| err += res; |
| |
| err += sn9c102_i2c_detect_read_error(cam, sensor); |
| |
| PDBGG("I2C read: address 0x%02X, first read byte: 0x%02X", data1, |
| data[4]); |
| |
| if (err) { |
| DBG(3, "I2C read failed for %s image sensor", sensor->name); |
| return -1; |
| } |
| |
| if (buffer) |
| for (i = 0; i < n && i < 5; i++) |
| buffer[n-i-1] = data[4-i]; |
| |
| return (int)data[4]; |
| } |
| |
| |
| int |
| sn9c102_i2c_try_raw_write(struct sn9c102_device* cam, |
| const struct sn9c102_sensor* sensor, u8 n, u8 data0, |
| u8 data1, u8 data2, u8 data3, u8 data4, u8 data5) |
| { |
| struct usb_device* udev = cam->usbdev; |
| u8* data = cam->control_buffer; |
| int err = 0, res; |
| |
| /* Write cycle. It usually is address + value */ |
| data[0] = ((sensor->interface == SN9C102_I2C_2WIRES) ? 0x80 : 0) | |
| ((sensor->frequency & SN9C102_I2C_400KHZ) ? 0x01 : 0) |
| | ((n - 1) << 4); |
| data[1] = data0; |
| data[2] = data1; |
| data[3] = data2; |
| data[4] = data3; |
| data[5] = data4; |
| data[6] = data5; |
| data[7] = 0x17; |
| res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x08, 0x41, |
| 0x08, 0, data, 8, SN9C102_CTRL_TIMEOUT); |
| if (res < 0) |
| err += res; |
| |
| err += sn9c102_i2c_wait(cam, sensor); |
| err += sn9c102_i2c_detect_write_error(cam, sensor); |
| |
| if (err) |
| DBG(3, "I2C write failed for %s image sensor", sensor->name); |
| |
| PDBGG("I2C raw write: %u bytes, data0 = 0x%02X, data1 = 0x%02X, " |
| "data2 = 0x%02X, data3 = 0x%02X, data4 = 0x%02X, data5 = 0x%02X", |
| n, data0, data1, data2, data3, data4, data5); |
| |
| return err ? -1 : 0; |
| } |
| |
| |
| int |
| sn9c102_i2c_try_read(struct sn9c102_device* cam, |
| const struct sn9c102_sensor* sensor, u8 address) |
| { |
| return sn9c102_i2c_try_raw_read(cam, sensor, sensor->i2c_slave_id, |
| address, 1, NULL); |
| } |
| |
| |
| static int sn9c102_i2c_try_write(struct sn9c102_device* cam, |
| const struct sn9c102_sensor* sensor, |
| u8 address, u8 value) |
| { |
| return sn9c102_i2c_try_raw_write(cam, sensor, 3, |
| sensor->i2c_slave_id, address, |
| value, 0, 0, 0); |
| } |
| |
| |
| int sn9c102_i2c_read(struct sn9c102_device* cam, u8 address) |
| { |
| return sn9c102_i2c_try_read(cam, &cam->sensor, address); |
| } |
| |
| |
| int sn9c102_i2c_write(struct sn9c102_device* cam, u8 address, u8 value) |
| { |
| return sn9c102_i2c_try_write(cam, &cam->sensor, address, value); |
| } |
| |
| /*****************************************************************************/ |
| |
| static size_t sn9c102_sof_length(struct sn9c102_device* cam) |
| { |
| switch (cam->bridge) { |
| case BRIDGE_SN9C101: |
| case BRIDGE_SN9C102: |
| return 12; |
| case BRIDGE_SN9C103: |
| return 18; |
| case BRIDGE_SN9C105: |
| case BRIDGE_SN9C120: |
| return 62; |
| } |
| |
| return 0; |
| } |
| |
| |
| static void* |
| sn9c102_find_sof_header(struct sn9c102_device* cam, void* mem, size_t len) |
| { |
| static const char marker[6] = {0xff, 0xff, 0x00, 0xc4, 0xc4, 0x96}; |
| const char *m = mem; |
| size_t soflen = 0, i, j; |
| |
| soflen = sn9c102_sof_length(cam); |
| |
| for (i = 0; i < len; i++) { |
| size_t b; |
| |
| /* Read the variable part of the header */ |
| if (unlikely(cam->sof.bytesread >= sizeof(marker))) { |
| cam->sof.header[cam->sof.bytesread] = *(m+i); |
| if (++cam->sof.bytesread == soflen) { |
| cam->sof.bytesread = 0; |
| return mem + i; |
| } |
| continue; |
| } |
| |
| /* Search for the SOF marker (fixed part) in the header */ |
| for (j = 0, b=cam->sof.bytesread; j+b < sizeof(marker); j++) { |
| if (unlikely(i+j == len)) |
| return NULL; |
| if (*(m+i+j) == marker[cam->sof.bytesread]) { |
| cam->sof.header[cam->sof.bytesread] = *(m+i+j); |
| if (++cam->sof.bytesread == sizeof(marker)) { |
| PDBGG("Bytes to analyze: %zd. SOF " |
| "starts at byte #%zd", len, i); |
| i += j+1; |
| break; |
| } |
| } else { |
| cam->sof.bytesread = 0; |
| break; |
| } |
| } |
| } |
| |
| return NULL; |
| } |
| |
| |
| static void* |
| sn9c102_find_eof_header(struct sn9c102_device* cam, void* mem, size_t len) |
| { |
| static const u8 eof_header[4][4] = { |
| {0x00, 0x00, 0x00, 0x00}, |
| {0x40, 0x00, 0x00, 0x00}, |
| {0x80, 0x00, 0x00, 0x00}, |
| {0xc0, 0x00, 0x00, 0x00}, |
| }; |
| size_t i, j; |
| |
| /* The EOF header does not exist in compressed data */ |
| if (cam->sensor.pix_format.pixelformat == V4L2_PIX_FMT_SN9C10X || |
| cam->sensor.pix_format.pixelformat == V4L2_PIX_FMT_JPEG) |
| return NULL; |
| |
| /* |
| The EOF header might cross the packet boundary, but this is not a |
| problem, since the end of a frame is determined by checking its size |
| in the first place. |
| */ |
| for (i = 0; (len >= 4) && (i <= len - 4); i++) |
| for (j = 0; j < ARRAY_SIZE(eof_header); j++) |
| if (!memcmp(mem + i, eof_header[j], 4)) |
| return mem + i; |
| |
| return NULL; |
| } |
| |
| |
| static void |
| sn9c102_write_jpegheader(struct sn9c102_device* cam, struct sn9c102_frame_t* f) |
| { |
| static const u8 jpeg_header[589] = { |
| 0xff, 0xd8, 0xff, 0xdb, 0x00, 0x84, 0x00, 0x06, 0x04, 0x05, |
| 0x06, 0x05, 0x04, 0x06, 0x06, 0x05, 0x06, 0x07, 0x07, 0x06, |
| 0x08, 0x0a, 0x10, 0x0a, 0x0a, 0x09, 0x09, 0x0a, 0x14, 0x0e, |
| 0x0f, 0x0c, 0x10, 0x17, 0x14, 0x18, 0x18, 0x17, 0x14, 0x16, |
| 0x16, 0x1a, 0x1d, 0x25, 0x1f, 0x1a, 0x1b, 0x23, 0x1c, 0x16, |
| 0x16, 0x20, 0x2c, 0x20, 0x23, 0x26, 0x27, 0x29, 0x2a, 0x29, |
| 0x19, 0x1f, 0x2d, 0x30, 0x2d, 0x28, 0x30, 0x25, 0x28, 0x29, |
| 0x28, 0x01, 0x07, 0x07, 0x07, 0x0a, 0x08, 0x0a, 0x13, 0x0a, |
| 0x0a, 0x13, 0x28, 0x1a, 0x16, 0x1a, 0x28, 0x28, 0x28, 0x28, |
| 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, |
| 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, |
| 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, |
| 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, |
| 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0xff, 0xc4, 0x01, 0xa2, |
| 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, |
| 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x01, |
| 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, |
| 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03, |
| 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x10, 0x00, |
| 0x02, 0x01, 0x03, 0x03, 0x02, 0x04, 0x03, 0x05, 0x05, 0x04, |
| 0x04, 0x00, 0x00, 0x01, 0x7d, 0x01, 0x02, 0x03, 0x00, 0x04, |
| 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, |
| 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, 0x23, |
| 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0, 0x24, 0x33, 0x62, |
| 0x72, 0x82, 0x09, 0x0a, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x25, |
| 0x26, 0x27, 0x28, 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, |
| 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, |
| 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64, |
| 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, |
| 0x77, 0x78, 0x79, 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, |
| 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, |
| 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, |
| 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, |
| 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, |
| 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2, 0xe3, |
| 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf1, 0xf2, 0xf3, |
| 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0x11, 0x00, 0x02, |
| 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05, 0x04, 0x04, |
| 0x00, 0x01, 0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, |
| 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, |
| 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xa1, 0xb1, |
| 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0, 0x15, 0x62, 0x72, 0xd1, |
| 0x0a, 0x16, 0x24, 0x34, 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, |
| 0x1a, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38, |
| 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, |
| 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64, |
| 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, |
| 0x77, 0x78, 0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, |
| 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, |
| 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, |
| 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, |
| 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, |
| 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe2, 0xe3, |
| 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf2, 0xf3, 0xf4, |
| 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xff, 0xc0, 0x00, 0x11, |
| 0x08, 0x01, 0xe0, 0x02, 0x80, 0x03, 0x01, 0x21, 0x00, 0x02, |
| 0x11, 0x01, 0x03, 0x11, 0x01, 0xff, 0xda, 0x00, 0x0c, 0x03, |
| 0x01, 0x00, 0x02, 0x11, 0x03, 0x11, 0x00, 0x3f, 0x00 |
| }; |
| u8 *pos = f->bufmem; |
| |
| memcpy(pos, jpeg_header, sizeof(jpeg_header)); |
| *(pos + 6) = 0x00; |
| *(pos + 7 + 64) = 0x01; |
| if (cam->compression.quality == 0) { |
| memcpy(pos + 7, SN9C102_Y_QTABLE0, 64); |
| memcpy(pos + 8 + 64, SN9C102_UV_QTABLE0, 64); |
| } else if (cam->compression.quality == 1) { |
| memcpy(pos + 7, SN9C102_Y_QTABLE1, 64); |
| memcpy(pos + 8 + 64, SN9C102_UV_QTABLE1, 64); |
| } |
| *(pos + 564) = cam->sensor.pix_format.width & 0xFF; |
| *(pos + 563) = (cam->sensor.pix_format.width >> 8) & 0xFF; |
| *(pos + 562) = cam->sensor.pix_format.height & 0xFF; |
| *(pos + 561) = (cam->sensor.pix_format.height >> 8) & 0xFF; |
| *(pos + 567) = 0x21; |
| |
| f->buf.bytesused += sizeof(jpeg_header); |
| } |
| |
| |
| static void sn9c102_urb_complete(struct urb *urb) |
| { |
| struct sn9c102_device* cam = urb->context; |
| struct sn9c102_frame_t** f; |
| size_t imagesize, soflen; |
| u8 i; |
| int err = 0; |
| |
| if (urb->status == -ENOENT) |
| return; |
| |
| f = &cam->frame_current; |
| |
| if (cam->stream == STREAM_INTERRUPT) { |
| cam->stream = STREAM_OFF; |
| if ((*f)) |
| (*f)->state = F_QUEUED; |
| cam->sof.bytesread = 0; |
| DBG(3, "Stream interrupted by application"); |
| wake_up(&cam->wait_stream); |
| } |
| |
| if (cam->state & DEV_DISCONNECTED) |
| return; |
| |
| if (cam->state & DEV_MISCONFIGURED) { |
| wake_up_interruptible(&cam->wait_frame); |
| return; |
| } |
| |
| if (cam->stream == STREAM_OFF || list_empty(&cam->inqueue)) |
| goto resubmit_urb; |
| |
| if (!(*f)) |
| (*f) = list_entry(cam->inqueue.next, struct sn9c102_frame_t, |
| frame); |
| |
| imagesize = (cam->sensor.pix_format.width * |
| cam->sensor.pix_format.height * |
| cam->sensor.pix_format.priv) / 8; |
| if (cam->sensor.pix_format.pixelformat == V4L2_PIX_FMT_JPEG) |
| imagesize += 589; /* length of jpeg header */ |
| soflen = sn9c102_sof_length(cam); |
| |
| for (i = 0; i < urb->number_of_packets; i++) { |
| unsigned int img, len, status; |
| void *pos, *sof, *eof; |
| |
| len = urb->iso_frame_desc[i].actual_length; |
| status = urb->iso_frame_desc[i].status; |
| pos = urb->iso_frame_desc[i].offset + urb->transfer_buffer; |
| |
| if (status) { |
| DBG(3, "Error in isochronous frame"); |
| (*f)->state = F_ERROR; |
| cam->sof.bytesread = 0; |
| continue; |
| } |
| |
| PDBGG("Isochrnous frame: length %u, #%u i", len, i); |
| |
| redo: |
| sof = sn9c102_find_sof_header(cam, pos, len); |
| if (likely(!sof)) { |
| eof = sn9c102_find_eof_header(cam, pos, len); |
| if ((*f)->state == F_GRABBING) { |
| end_of_frame: |
| img = len; |
| |
| if (eof) |
| img = (eof > pos) ? eof - pos - 1 : 0; |
| |
| if ((*f)->buf.bytesused + img > imagesize) { |
| u32 b; |
| b = (*f)->buf.bytesused + img - |
| imagesize; |
| img = imagesize - (*f)->buf.bytesused; |
| PDBGG("Expected EOF not found: video " |
| "frame cut"); |
| if (eof) |
| DBG(3, "Exceeded limit: +%u " |
| "bytes", (unsigned)(b)); |
| } |
| |
| memcpy((*f)->bufmem + (*f)->buf.bytesused, pos, |
| img); |
| |
| if ((*f)->buf.bytesused == 0) |
| do_gettimeofday(&(*f)->buf.timestamp); |
| |
| (*f)->buf.bytesused += img; |
| |
| if ((*f)->buf.bytesused == imagesize || |
| ((cam->sensor.pix_format.pixelformat == |
| V4L2_PIX_FMT_SN9C10X || |
| cam->sensor.pix_format.pixelformat == |
| V4L2_PIX_FMT_JPEG) && eof)) { |
| u32 b; |
| |
| b = (*f)->buf.bytesused; |
| (*f)->state = F_DONE; |
| (*f)->buf.sequence= ++cam->frame_count; |
| |
| spin_lock(&cam->queue_lock); |
| list_move_tail(&(*f)->frame, |
| &cam->outqueue); |
| if (!list_empty(&cam->inqueue)) |
| (*f) = list_entry( |
| cam->inqueue.next, |
| struct sn9c102_frame_t, |
| frame ); |
| else |
| (*f) = NULL; |
| spin_unlock(&cam->queue_lock); |
| |
| memcpy(cam->sysfs.frame_header, |
| cam->sof.header, soflen); |
| |
| DBG(3, "Video frame captured: %lu " |
| "bytes", (unsigned long)(b)); |
| |
| if (!(*f)) |
| goto resubmit_urb; |
| |
| } else if (eof) { |
| (*f)->state = F_ERROR; |
| DBG(3, "Not expected EOF after %lu " |
| "bytes of image data", |
| (unsigned long) |
| ((*f)->buf.bytesused)); |
| } |
| |
| if (sof) /* (1) */ |
| goto start_of_frame; |
| |
| } else if (eof) { |
| DBG(3, "EOF without SOF"); |
| continue; |
| |
| } else { |
| PDBGG("Ignoring pointless isochronous frame"); |
| continue; |
| } |
| |
| } else if ((*f)->state == F_QUEUED || (*f)->state == F_ERROR) { |
| start_of_frame: |
| (*f)->state = F_GRABBING; |
| (*f)->buf.bytesused = 0; |
| len -= (sof - pos); |
| pos = sof; |
| if (cam->sensor.pix_format.pixelformat == |
| V4L2_PIX_FMT_JPEG) |
| sn9c102_write_jpegheader(cam, (*f)); |
| DBG(3, "SOF detected: new video frame"); |
| if (len) |
| goto redo; |
| |
| } else if ((*f)->state == F_GRABBING) { |
| eof = sn9c102_find_eof_header(cam, pos, len); |
| if (eof && eof < sof) |
| goto end_of_frame; /* (1) */ |
| else { |
| if (cam->sensor.pix_format.pixelformat == |
| V4L2_PIX_FMT_SN9C10X || |
| cam->sensor.pix_format.pixelformat == |
| V4L2_PIX_FMT_JPEG) { |
| if (sof - pos >= soflen) { |
| eof = sof - soflen; |
| } else { /* remove header */ |
| eof = pos; |
| (*f)->buf.bytesused -= |
| (soflen - (sof - pos)); |
| } |
| goto end_of_frame; |
| } else { |
| DBG(3, "SOF before expected EOF after " |
| "%lu bytes of image data", |
| (unsigned long) |
| ((*f)->buf.bytesused)); |
| goto start_of_frame; |
| } |
| } |
| } |
| } |
| |
| resubmit_urb: |
| urb->dev = cam->usbdev; |
| err = usb_submit_urb(urb, GFP_ATOMIC); |
| if (err < 0 && err != -EPERM) { |
| cam->state |= DEV_MISCONFIGURED; |
| DBG(1, "usb_submit_urb() failed"); |
| } |
| |
| wake_up_interruptible(&cam->wait_frame); |
| } |
| |
| |
| static int sn9c102_start_transfer(struct sn9c102_device* cam) |
| { |
| struct usb_device *udev = cam->usbdev; |
| struct urb* urb; |
| struct usb_host_interface* altsetting = usb_altnum_to_altsetting( |
| usb_ifnum_to_if(udev, 0), |
| SN9C102_ALTERNATE_SETTING); |
| const unsigned int psz = le16_to_cpu(altsetting-> |
| endpoint[0].desc.wMaxPacketSize); |
| s8 i, j; |
| int err = 0; |
| |
| for (i = 0; i < SN9C102_URBS; i++) { |
| cam->transfer_buffer[i] = kzalloc(SN9C102_ISO_PACKETS * psz, |
| GFP_KERNEL); |
| if (!cam->transfer_buffer[i]) { |
| err = -ENOMEM; |
| DBG(1, "Not enough memory"); |
| goto free_buffers; |
| } |
| } |
| |
| for (i = 0; i < SN9C102_URBS; i++) { |
| urb = usb_alloc_urb(SN9C102_ISO_PACKETS, GFP_KERNEL); |
| cam->urb[i] = urb; |
| if (!urb) { |
| err = -ENOMEM; |
| DBG(1, "usb_alloc_urb() failed"); |
| goto free_urbs; |
| } |
| urb->dev = udev; |
| urb->context = cam; |
| urb->pipe = usb_rcvisocpipe(udev, 1); |
| urb->transfer_flags = URB_ISO_ASAP; |
| urb->number_of_packets = SN9C102_ISO_PACKETS; |
| urb->complete = sn9c102_urb_complete; |
| urb->transfer_buffer = cam->transfer_buffer[i]; |
| urb->transfer_buffer_length = psz * SN9C102_ISO_PACKETS; |
| urb->interval = 1; |
| for (j = 0; j < SN9C102_ISO_PACKETS; j++) { |
| urb->iso_frame_desc[j].offset = psz * j; |
| urb->iso_frame_desc[j].length = psz; |
| } |
| } |
| |
| /* Enable video */ |
| if (!(cam->reg[0x01] & 0x04)) { |
| err = sn9c102_write_reg(cam, cam->reg[0x01] | 0x04, 0x01); |
| if (err) { |
| err = -EIO; |
| DBG(1, "I/O hardware error"); |
| goto free_urbs; |
| } |
| } |
| |
| err = usb_set_interface(udev, 0, SN9C102_ALTERNATE_SETTING); |
| if (err) { |
| DBG(1, "usb_set_interface() failed"); |
| goto free_urbs; |
| } |
| |
| cam->frame_current = NULL; |
| cam->sof.bytesread = 0; |
| |
| for (i = 0; i < SN9C102_URBS; i++) { |
| err = usb_submit_urb(cam->urb[i], GFP_KERNEL); |
| if (err) { |
| for (j = i-1; j >= 0; j--) |
| usb_kill_urb(cam->urb[j]); |
| DBG(1, "usb_submit_urb() failed, error %d", err); |
| goto free_urbs; |
| } |
| } |
| |
| return 0; |
| |
| free_urbs: |
| for (i = 0; (i < SN9C102_URBS) && cam->urb[i]; i++) |
| usb_free_urb(cam->urb[i]); |
| |
| free_buffers: |
| for (i = 0; (i < SN9C102_URBS) && cam->transfer_buffer[i]; i++) |
| kfree(cam->transfer_buffer[i]); |
| |
| return err; |
| } |
| |
| |
| static int sn9c102_stop_transfer(struct sn9c102_device* cam) |
| { |
| struct usb_device *udev = cam->usbdev; |
| s8 i; |
| int err = 0; |
| |
| if (cam->state & DEV_DISCONNECTED) |
| return 0; |
| |
| for (i = SN9C102_URBS-1; i >= 0; i--) { |
| usb_kill_urb(cam->urb[i]); |
| usb_free_urb(cam->urb[i]); |
| kfree(cam->transfer_buffer[i]); |
| } |
| |
| err = usb_set_interface(udev, 0, 0); /* 0 Mb/s */ |
| if (err) |
| DBG(3, "usb_set_interface() failed"); |
| |
| return err; |
| } |
| |
| |
| static int sn9c102_stream_interrupt(struct sn9c102_device* cam) |
| { |
| long timeout; |
| |
| cam->stream = STREAM_INTERRUPT; |
| timeout = wait_event_timeout(cam->wait_stream, |
| (cam->stream == STREAM_OFF) || |
| (cam->state & DEV_DISCONNECTED), |
| SN9C102_URB_TIMEOUT); |
| if (cam->state & DEV_DISCONNECTED) |
| return -ENODEV; |
| else if (cam->stream != STREAM_OFF) { |
| cam->state |= DEV_MISCONFIGURED; |
| DBG(1, "URB timeout reached. The camera is misconfigured. " |
| "To use it, close and open %s again.", |
| video_device_node_name(cam->v4ldev)); |
| return -EIO; |
| } |
| |
| return 0; |
| } |
| |
| /*****************************************************************************/ |
| |
| #ifdef CONFIG_VIDEO_ADV_DEBUG |
| static u16 sn9c102_strtou16(const char* buff, size_t len, ssize_t* count) |
| { |
| char str[7]; |
| char* endp; |
| unsigned long val; |
| |
| if (len < 6) { |
| strncpy(str, buff, len); |
| str[len] = '\0'; |
| } else { |
| strncpy(str, buff, 6); |
| str[6] = '\0'; |
| } |
| |
| val = simple_strtoul(str, &endp, 0); |
| |
| *count = 0; |
| if (val <= 0xffff) |
| *count = (ssize_t)(endp - str); |
| if ((*count) && (len == *count+1) && (buff[*count] == '\n')) |
| *count += 1; |
| |
| return (u16)val; |
| } |
| |
| /* |
| NOTE 1: being inside one of the following methods implies that the v4l |
| device exists for sure (see kobjects and reference counters) |
| NOTE 2: buffers are PAGE_SIZE long |
| */ |
| |
| static ssize_t sn9c102_show_reg(struct device* cd, |
| struct device_attribute *attr, char* buf) |
| { |
| struct sn9c102_device* cam; |
| ssize_t count; |
| |
| if (mutex_lock_interruptible(&sn9c102_sysfs_lock)) |
| return -ERESTARTSYS; |
| |
| cam = video_get_drvdata(container_of(cd, struct video_device, dev)); |
| if (!cam) { |
| mutex_unlock(&sn9c102_sysfs_lock); |
| return -ENODEV; |
| } |
| |
| count = sprintf(buf, "%u\n", cam->sysfs.reg); |
| |
| mutex_unlock(&sn9c102_sysfs_lock); |
| |
| return count; |
| } |
| |
| |
| static ssize_t |
| sn9c102_store_reg(struct device* cd, struct device_attribute *attr, |
| const char* buf, size_t len) |
| { |
| struct sn9c102_device* cam; |
| u16 index; |
| ssize_t count; |
| |
| if (mutex_lock_interruptible(&sn9c102_sysfs_lock)) |
| return -ERESTARTSYS; |
| |
| cam = video_get_drvdata(container_of(cd, struct video_device, dev)); |
| if (!cam) { |
| mutex_unlock(&sn9c102_sysfs_lock); |
| return -ENODEV; |
| } |
| |
| index = sn9c102_strtou16(buf, len, &count); |
| if (index >= ARRAY_SIZE(cam->reg) || !count) { |
| mutex_unlock(&sn9c102_sysfs_lock); |
| return -EINVAL; |
| } |
| |
| cam->sysfs.reg = index; |
| |
| DBG(2, "Moved SN9C1XX register index to 0x%02X", cam->sysfs.reg); |
| DBG(3, "Written bytes: %zd", count); |
| |
| mutex_unlock(&sn9c102_sysfs_lock); |
| |
| return count; |
| } |
| |
| |
| static ssize_t sn9c102_show_val(struct device* cd, |
| struct device_attribute *attr, char* buf) |
| { |
| struct sn9c102_device* cam; |
| ssize_t count; |
| int val; |
| |
| if (mutex_lock_interruptible(&sn9c102_sysfs_lock)) |
| return -ERESTARTSYS; |
| |
| cam = video_get_drvdata(container_of(cd, struct video_device, dev)); |
| if (!cam) { |
| mutex_unlock(&sn9c102_sysfs_lock); |
| return -ENODEV; |
| } |
| |
| if ((val = sn9c102_read_reg(cam, cam->sysfs.reg)) < 0) { |
| mutex_unlock(&sn9c102_sysfs_lock); |
| return -EIO; |
| } |
| |
| count = sprintf(buf, "%d\n", val); |
| |
| DBG(3, "Read bytes: %zd, value: %d", count, val); |
| |
| mutex_unlock(&sn9c102_sysfs_lock); |
| |
| return count; |
| } |
| |
| |
| static ssize_t |
| sn9c102_store_val(struct device* cd, struct device_attribute *attr, |
| const char* buf, size_t len) |
| { |
| struct sn9c102_device* cam; |
| u16 value; |
| ssize_t count; |
| int err; |
| |
| if (mutex_lock_interruptible(&sn9c102_sysfs_lock)) |
| return -ERESTARTSYS; |
| |
| cam = video_get_drvdata(container_of(cd, struct video_device, dev)); |
| if (!cam) { |
| mutex_unlock(&sn9c102_sysfs_lock); |
| return -ENODEV; |
| } |
| |
| value = sn9c102_strtou16(buf, len, &count); |
| if (!count) { |
| mutex_unlock(&sn9c102_sysfs_lock); |
| return -EINVAL; |
| } |
| |
| err = sn9c102_write_reg(cam, value, cam->sysfs.reg); |
| if (err) { |
| mutex_unlock(&sn9c102_sysfs_lock); |
| return -EIO; |
| } |
| |
| DBG(2, "Written SN9C1XX reg. 0x%02X, val. 0x%02X", |
| cam->sysfs.reg, value); |
| DBG(3, "Written bytes: %zd", count); |
| |
| mutex_unlock(&sn9c102_sysfs_lock); |
| |
| return count; |
| } |
| |
| |
| static ssize_t sn9c102_show_i2c_reg(struct device* cd, |
| struct device_attribute *attr, char* buf) |
| { |
| struct sn9c102_device* cam; |
| ssize_t count; |
| |
| if (mutex_lock_interruptible(&sn9c102_sysfs_lock)) |
| return -ERESTARTSYS; |
| |
| cam = video_get_drvdata(container_of(cd, struct video_device, dev)); |
| if (!cam) { |
| mutex_unlock(&sn9c102_sysfs_lock); |
| return -ENODEV; |
| } |
| |
| count = sprintf(buf, "%u\n", cam->sysfs.i2c_reg); |
| |
| DBG(3, "Read bytes: %zd", count); |
| |
| mutex_unlock(&sn9c102_sysfs_lock); |
| |
| return count; |
| } |
| |
| |
| static ssize_t |
| sn9c102_store_i2c_reg(struct device* cd, struct device_attribute *attr, |
| const char* buf, size_t len) |
| { |
| struct sn9c102_device* cam; |
| u16 index; |
| ssize_t count; |
| |
| if (mutex_lock_interruptible(&sn9c102_sysfs_lock)) |
| return -ERESTARTSYS; |
| |
| cam = video_get_drvdata(container_of(cd, struct video_device, dev)); |
| if (!cam) { |
| mutex_unlock(&sn9c102_sysfs_lock); |
| return -ENODEV; |
| } |
| |
| index = sn9c102_strtou16(buf, len, &count); |
| if (!count) { |
| mutex_unlock(&sn9c102_sysfs_lock); |
| return -EINVAL; |
| } |
| |
| cam->sysfs.i2c_reg = index; |
| |
| DBG(2, "Moved sensor register index to 0x%02X", cam->sysfs.i2c_reg); |
| DBG(3, "Written bytes: %zd", count); |
| |
| mutex_unlock(&sn9c102_sysfs_lock); |
| |
| return count; |
| } |
| |
| |
| static ssize_t sn9c102_show_i2c_val(struct device* cd, |
| struct device_attribute *attr, char* buf) |
| { |
| struct sn9c102_device* cam; |
| ssize_t count; |
| int val; |
| |
| if (mutex_lock_interruptible(&sn9c102_sysfs_lock)) |
| return -ERESTARTSYS; |
| |
| cam = video_get_drvdata(container_of(cd, struct video_device, dev)); |
| if (!cam) { |
| mutex_unlock(&sn9c102_sysfs_lock); |
| return -ENODEV; |
| } |
| |
| if (!(cam->sensor.sysfs_ops & SN9C102_I2C_READ)) { |
| mutex_unlock(&sn9c102_sysfs_lock); |
| return -ENOSYS; |
| } |
| |
| if ((val = sn9c102_i2c_read(cam, cam->sysfs.i2c_reg)) < 0) { |
| mutex_unlock(&sn9c102_sysfs_lock); |
| return -EIO; |
| } |
| |
| count = sprintf(buf, "%d\n", val); |
| |
| DBG(3, "Read bytes: %zd, value: %d", count, val); |
| |
| mutex_unlock(&sn9c102_sysfs_lock); |
| |
| return count; |
| } |
| |
| |
| static ssize_t |
| sn9c102_store_i2c_val(struct device* cd, struct device_attribute *attr, |
| const char* buf, size_t len) |
| { |
| struct sn9c102_device* cam; |
| u16 value; |
| ssize_t count; |
| int err; |
| |
| if (mutex_lock_interruptible(&sn9c102_sysfs_lock)) |
| return -ERESTARTSYS; |
| |
| cam = video_get_drvdata(container_of(cd, struct video_device, dev)); |
| if (!cam) { |
| mutex_unlock(&sn9c102_sysfs_lock); |
| return -ENODEV; |
| } |
| |
| if (!(cam->sensor.sysfs_ops & SN9C102_I2C_WRITE)) { |
| mutex_unlock(&sn9c102_sysfs_lock); |
| return -ENOSYS; |
| } |
| |
| value = sn9c102_strtou16(buf, len, &count); |
| if (!count) { |
| mutex_unlock(&sn9c102_sysfs_lock); |
| return -EINVAL; |
| } |
| |
| err = sn9c102_i2c_write(cam, cam->sysfs.i2c_reg, value); |
| if (err) { |
| mutex_unlock(&sn9c102_sysfs_lock); |
| return -EIO; |
| } |
| |
| DBG(2, "Written sensor reg. 0x%02X, val. 0x%02X", |
| cam->sysfs.i2c_reg, value); |
| DBG(3, "Written bytes: %zd", count); |
| |
| mutex_unlock(&sn9c102_sysfs_lock); |
| |
| return count; |
| } |
| |
| |
| static ssize_t |
| sn9c102_store_green(struct device* cd, struct device_attribute *attr, |
| const char* buf, size_t len) |
| { |
| struct sn9c102_device* cam; |
| enum sn9c102_bridge bridge; |
| ssize_t res = 0; |
| u16 value; |
| ssize_t count; |
| |
| if (mutex_lock_interruptible(&sn9c102_sysfs_lock)) |
| return -ERESTARTSYS; |
| |
| cam = video_get_drvdata(container_of(cd, struct video_device, dev)); |
| if (!cam) { |
| mutex_unlock(&sn9c102_sysfs_lock); |
| return -ENODEV; |
| } |
| |
| bridge = cam->bridge; |
| |
| mutex_unlock(&sn9c102_sysfs_lock); |
| |
| value = sn9c102_strtou16(buf, len, &count); |
| if (!count) |
| return -EINVAL; |
| |
| switch (bridge) { |
| case BRIDGE_SN9C101: |
| case BRIDGE_SN9C102: |
| if (value > 0x0f) |
| return -EINVAL; |
| if ((res = sn9c102_store_reg(cd, attr, "0x11", 4)) >= 0) |
| res = sn9c102_store_val(cd, attr, buf, len); |
| break; |
| case BRIDGE_SN9C103: |
| case BRIDGE_SN9C105: |
| case BRIDGE_SN9C120: |
| if (value > 0x7f) |
| return -EINVAL; |
| if ((res = sn9c102_store_reg(cd, attr, "0x07", 4)) >= 0) |
| res = sn9c102_store_val(cd, attr, buf, len); |
| break; |
| } |
| |
| return res; |
| } |
| |
| |
| static ssize_t |
| sn9c102_store_blue(struct device* cd, struct device_attribute *attr, |
| const char* buf, size_t len) |
| { |
| ssize_t res = 0; |
| u16 value; |
| ssize_t count; |
| |
| value = sn9c102_strtou16(buf, len, &count); |
| if (!count || value > 0x7f) |
| return -EINVAL; |
| |
| if ((res = sn9c102_store_reg(cd, attr, "0x06", 4)) >= 0) |
| res = sn9c102_store_val(cd, attr, buf, len); |
| |
| return res; |
| } |
| |
| |
| static ssize_t |
| sn9c102_store_red(struct device* cd, struct device_attribute *attr, |
| const char* buf, size_t len) |
| { |
| ssize_t res = 0; |
| u16 value; |
| ssize_t count; |
| |
| value = sn9c102_strtou16(buf, len, &count); |
| if (!count || value > 0x7f) |
| return -EINVAL; |
| |
| if ((res = sn9c102_store_reg(cd, attr, "0x05", 4)) >= 0) |
| res = sn9c102_store_val(cd, attr, buf, len); |
| |
| return res; |
| } |
| |
| |
| static ssize_t sn9c102_show_frame_header(struct device* cd, |
| struct device_attribute *attr, |
| char* buf) |
| { |
| struct sn9c102_device* cam; |
| ssize_t count; |
| |
| cam = video_get_drvdata(container_of(cd, struct video_device, dev)); |
| if (!cam) |
| return -ENODEV; |
| |
| count = sizeof(cam->sysfs.frame_header); |
| memcpy(buf, cam->sysfs.frame_header, count); |
| |
| DBG(3, "Frame header, read bytes: %zd", count); |
| |
| return count; |
| } |
| |
| |
| static DEVICE_ATTR(reg, S_IRUGO | S_IWUSR, sn9c102_show_reg, sn9c102_store_reg); |
| static DEVICE_ATTR(val, S_IRUGO | S_IWUSR, sn9c102_show_val, sn9c102_store_val); |
| static DEVICE_ATTR(i2c_reg, S_IRUGO | S_IWUSR, |
| sn9c102_show_i2c_reg, sn9c102_store_i2c_reg); |
| static DEVICE_ATTR(i2c_val, S_IRUGO | S_IWUSR, |
| sn9c102_show_i2c_val, sn9c102_store_i2c_val); |
| static DEVICE_ATTR(green, S_IWUSR, NULL, sn9c102_store_green); |
| static DEVICE_ATTR(blue, S_IWUSR, NULL, sn9c102_store_blue); |
| static DEVICE_ATTR(red, S_IWUSR, NULL, sn9c102_store_red); |
| static DEVICE_ATTR(frame_header, S_IRUGO, sn9c102_show_frame_header, NULL); |
| |
| |
| static int sn9c102_create_sysfs(struct sn9c102_device* cam) |
| { |
| struct device *dev = &(cam->v4ldev->dev); |
| int err = 0; |
| |
| if ((err = device_create_file(dev, &dev_attr_reg))) |
| goto err_out; |
| if ((err = device_create_file(dev, &dev_attr_val))) |
| goto err_reg; |
| if ((err = device_create_file(dev, &dev_attr_frame_header))) |
| goto err_val; |
| |
| if (cam->sensor.sysfs_ops) { |
| if ((err = device_create_file(dev, &dev_attr_i2c_reg))) |
| goto err_frame_header; |
| if ((err = device_create_file(dev, &dev_attr_i2c_val))) |
| goto err_i2c_reg; |
| } |
| |
| if (cam->bridge == BRIDGE_SN9C101 || cam->bridge == BRIDGE_SN9C102) { |
| if ((err = device_create_file(dev, &dev_attr_green))) |
| goto err_i2c_val; |
| } else { |
| if ((err = device_create_file(dev, &dev_attr_blue))) |
| goto err_i2c_val; |
| if ((err = device_create_file(dev, &dev_attr_red))) |
| goto err_blue; |
| } |
| |
| return 0; |
| |
| err_blue: |
| device_remove_file(dev, &dev_attr_blue); |
| err_i2c_val: |
| if (cam->sensor.sysfs_ops) |
| device_remove_file(dev, &dev_attr_i2c_val); |
| err_i2c_reg: |
| if (cam->sensor.sysfs_ops) |
| device_remove_file(dev, &dev_attr_i2c_reg); |
| err_frame_header: |
| device_remove_file(dev, &dev_attr_frame_header); |
| err_val: |
| device_remove_file(dev, &dev_attr_val); |
| err_reg: |
| device_remove_file(dev, &dev_attr_reg); |
| err_out: |
| return err; |
| } |
| #endif /* CONFIG_VIDEO_ADV_DEBUG */ |
| |
| /*****************************************************************************/ |
| |
| static int |
| sn9c102_set_pix_format(struct sn9c102_device* cam, struct v4l2_pix_format* pix) |
| { |
| int err = 0; |
| |
| if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X || |
| pix->pixelformat == V4L2_PIX_FMT_JPEG) { |
| switch (cam->bridge) { |
| case BRIDGE_SN9C101: |
| case BRIDGE_SN9C102: |
| case BRIDGE_SN9C103: |
| err += sn9c102_write_reg(cam, cam->reg[0x18] | 0x80, |
| 0x18); |
| break; |
| case BRIDGE_SN9C105: |
| case BRIDGE_SN9C120: |
| err += sn9c102_write_reg(cam, cam->reg[0x18] & 0x7f, |
| 0x18); |
| break; |
| } |
| } else { |
| switch (cam->bridge) { |
| case BRIDGE_SN9C101: |
| case BRIDGE_SN9C102: |
| case BRIDGE_SN9C103: |
| err += sn9c102_write_reg(cam, cam->reg[0x18] & 0x7f, |
| 0x18); |
| break; |
| case BRIDGE_SN9C105: |
| case BRIDGE_SN9C120: |
| err += sn9c102_write_reg(cam, cam->reg[0x18] | 0x80, |
| 0x18); |
| break; |
| } |
| } |
| |
| return err ? -EIO : 0; |
| } |
| |
| |
| static int |
| sn9c102_set_compression(struct sn9c102_device* cam, |
| struct v4l2_jpegcompression* compression) |
| { |
| int i, err = 0; |
| |
| switch (cam->bridge) { |
| case BRIDGE_SN9C101: |
| case BRIDGE_SN9C102: |
| case BRIDGE_SN9C103: |
| if (compression->quality == 0) |
| err += sn9c102_write_reg(cam, cam->reg[0x17] | 0x01, |
| 0x17); |
| else if (compression->quality == 1) |
| err += sn9c102_write_reg(cam, cam->reg[0x17] & 0xfe, |
| 0x17); |
| break; |
| case BRIDGE_SN9C105: |
| case BRIDGE_SN9C120: |
| if (compression->quality == 0) { |
| for (i = 0; i <= 63; i++) { |
| err += sn9c102_write_reg(cam, |
| SN9C102_Y_QTABLE1[i], |
| 0x100 + i); |
| err += sn9c102_write_reg(cam, |
| SN9C102_UV_QTABLE1[i], |
| 0x140 + i); |
| } |
| err += sn9c102_write_reg(cam, cam->reg[0x18] & 0xbf, |
| 0x18); |
| } else if (compression->quality == 1) { |
| for (i = 0; i <= 63; i++) { |
| err += sn9c102_write_reg(cam, |
| SN9C102_Y_QTABLE1[i], |
| 0x100 + i); |
| err += sn9c102_write_reg(cam, |
| SN9C102_UV_QTABLE1[i], |
| 0x140 + i); |
| } |
| err += sn9c102_write_reg(cam, cam->reg[0x18] | 0x40, |
| 0x18); |
| } |
| break; |
| } |
| |
| return err ? -EIO : 0; |
| } |
| |
| |
| static int sn9c102_set_scale(struct sn9c102_device* cam, u8 scale) |
| { |
| u8 r = 0; |
| int err = 0; |
| |
| if (scale == 1) |
| r = cam->reg[0x18] & 0xcf; |
| else if (scale == 2) { |
| r = cam->reg[0x18] & 0xcf; |
| r |= 0x10; |
| } else if (scale == 4) |
| r = cam->reg[0x18] | 0x20; |
| |
| err += sn9c102_write_reg(cam, r, 0x18); |
| if (err) |
| return -EIO; |
| |
| PDBGG("Scaling factor: %u", scale); |
| |
| return 0; |
| } |
| |
| |
| static int sn9c102_set_crop(struct sn9c102_device* cam, struct v4l2_rect* rect) |
| { |
| struct sn9c102_sensor* s = &cam->sensor; |
| u8 h_start = (u8)(rect->left - s->cropcap.bounds.left), |
| v_start = (u8)(rect->top - s->cropcap.bounds.top), |
| h_size = (u8)(rect->width / 16), |
| v_size = (u8)(rect->height / 16); |
| int err = 0; |
| |
| err += sn9c102_write_reg(cam, h_start, 0x12); |
| err += sn9c102_write_reg(cam, v_start, 0x13); |
| err += sn9c102_write_reg(cam, h_size, 0x15); |
| err += sn9c102_write_reg(cam, v_size, 0x16); |
| if (err) |
| return -EIO; |
| |
| PDBGG("h_start, v_start, h_size, v_size, ho_size, vo_size " |
| "%u %u %u %u", h_start, v_start, h_size, v_size); |
| |
| return 0; |
| } |
| |
| |
| static int sn9c102_init(struct sn9c102_device* cam) |
| { |
| struct sn9c102_sensor* s = &cam->sensor; |
| struct v4l2_control ctrl; |
| struct v4l2_queryctrl *qctrl; |
| struct v4l2_rect* rect; |
| u8 i = 0; |
| int err = 0; |
| |
| if (!(cam->state & DEV_INITIALIZED)) { |
| mutex_init(&cam->open_mutex); |
| init_waitqueue_head(&cam->wait_open); |
| qctrl = s->qctrl; |
| rect = &(s->cropcap.defrect); |
| } else { /* use current values */ |
| qctrl = s->_qctrl; |
| rect = &(s->_rect); |
| } |
| |
| err += sn9c102_set_scale(cam, rect->width / s->pix_format.width); |
| err += sn9c102_set_crop(cam, rect); |
| if (err) |
| return err; |
| |
| if (s->init) { |
| err = s->init(cam); |
| if (err) { |
| DBG(3, "Sensor initialization failed"); |
| return err; |
| } |
| } |
| |
| if (!(cam->state & DEV_INITIALIZED)) |
| if (cam->bridge == BRIDGE_SN9C101 || |
| cam->bridge == BRIDGE_SN9C102 || |
| cam->bridge == BRIDGE_SN9C103) { |
| if (s->pix_format.pixelformat == V4L2_PIX_FMT_JPEG) |
| s->pix_format.pixelformat= V4L2_PIX_FMT_SBGGR8; |
| cam->compression.quality = cam->reg[0x17] & 0x01 ? |
| 0 : 1; |
| } else { |
| if (s->pix_format.pixelformat == V4L2_PIX_FMT_SN9C10X) |
| s->pix_format.pixelformat = V4L2_PIX_FMT_JPEG; |
| cam->compression.quality = cam->reg[0x18] & 0x40 ? |
| 0 : 1; |
| err += sn9c102_set_compression(cam, &cam->compression); |
| } |
| else |
| err += sn9c102_set_compression(cam, &cam->compression); |
| err += sn9c102_set_pix_format(cam, &s->pix_format); |
| if (s->set_pix_format) |
| err += s->set_pix_format(cam, &s->pix_format); |
| if (err) |
| return err; |
| |
| if (s->pix_format.pixelformat == V4L2_PIX_FMT_SN9C10X || |
| s->pix_format.pixelformat == V4L2_PIX_FMT_JPEG) |
| DBG(3, "Compressed video format is active, quality %d", |
| cam->compression.quality); |
| else |
| DBG(3, "Uncompressed video format is active"); |
| |
| if (s->set_crop) |
| if ((err = s->set_crop(cam, rect))) { |
| DBG(3, "set_crop() failed"); |
| return err; |
| } |
| |
| if (s->set_ctrl) { |
| for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) |
| if (s->qctrl[i].id != 0 && |
| !(s->qctrl[i].flags & V4L2_CTRL_FLAG_DISABLED)) { |
| ctrl.id = s->qctrl[i].id; |
| ctrl.value = qctrl[i].default_value; |
| err = s->set_ctrl(cam, &ctrl); |
| if (err) { |
| DBG(3, "Set %s control failed", |
| s->qctrl[i].name); |
| return err; |
| } |
| DBG(3, "Image sensor supports '%s' control", |
| s->qctrl[i].name); |
| } |
| } |
| |
| if (!(cam->state & DEV_INITIALIZED)) { |
| mutex_init(&cam->fileop_mutex); |
| spin_lock_init(&cam->queue_lock); |
| init_waitqueue_head(&cam->wait_frame); |
| init_waitqueue_head(&cam->wait_stream); |
| cam->nreadbuffers = 2; |
| memcpy(s->_qctrl, s->qctrl, sizeof(s->qctrl)); |
| memcpy(&(s->_rect), &(s->cropcap.defrect), |
| sizeof(struct v4l2_rect)); |
| cam->state |= DEV_INITIALIZED; |
| } |
| |
| DBG(2, "Initialization succeeded"); |
| return 0; |
| } |
| |
| /*****************************************************************************/ |
| |
| static void sn9c102_release_resources(struct kref *kref) |
| { |
| struct sn9c102_device *cam; |
| |
| mutex_lock(&sn9c102_sysfs_lock); |
| |
| cam = container_of(kref, struct sn9c102_device, kref); |
| |
| DBG(2, "V4L2 device %s deregistered", |
| video_device_node_name(cam->v4ldev)); |
| video_set_drvdata(cam->v4ldev, NULL); |
| video_unregister_device(cam->v4ldev); |
| usb_put_dev(cam->usbdev); |
| kfree(cam->control_buffer); |
| kfree(cam); |
| |
| mutex_unlock(&sn9c102_sysfs_lock); |
| |
| } |
| |
| |
| static int sn9c102_open(struct file *filp) |
| { |
| struct sn9c102_device* cam; |
| int err = 0; |
| |
| /* |
| A read_trylock() in open() is the only safe way to prevent race |
| conditions with disconnect(), one close() and multiple (not |
| necessarily simultaneous) attempts to open(). For example, it |
| prevents from waiting for a second access, while the device |
| structure is being deallocated, after a possible disconnect() and |
| during a following close() holding the write lock: given that, after |
| this deallocation, no access will be possible anymore, using the |
| non-trylock version would have let open() gain the access to the |
| device structure improperly. |
| For this reason the lock must also not be per-device. |
| */ |
| if (!down_read_trylock(&sn9c102_dev_lock)) |
| return -ERESTARTSYS; |
| |
| cam = video_drvdata(filp); |
| |
| if (wait_for_completion_interruptible(&cam->probe)) { |
| up_read(&sn9c102_dev_lock); |
| return -ERESTARTSYS; |
| } |
| |
| kref_get(&cam->kref); |
| |
| /* |
| Make sure to isolate all the simultaneous opens. |
| */ |
| if (mutex_lock_interruptible(&cam->open_mutex)) { |
| kref_put(&cam->kref, sn9c102_release_resources); |
| up_read(&sn9c102_dev_lock); |
| return -ERESTARTSYS; |
| } |
| |
| if (cam->state & DEV_DISCONNECTED) { |
| DBG(1, "Device not present"); |
| err = -ENODEV; |
| goto out; |
| } |
| |
| if (cam->users) { |
| DBG(2, "Device %s is already in use", |
| video_device_node_name(cam->v4ldev)); |
| DBG(3, "Simultaneous opens are not supported"); |
| /* |
| open() must follow the open flags and should block |
| eventually while the device is in use. |
| */ |
| if ((filp->f_flags & O_NONBLOCK) || |
| (filp->f_flags & O_NDELAY)) { |
| err = -EWOULDBLOCK; |
| goto out; |
| } |
| DBG(2, "A blocking open() has been requested. Wait for the " |
| "device to be released..."); |
| up_read(&sn9c102_dev_lock); |
| /* |
| We will not release the "open_mutex" lock, so that only one |
| process can be in the wait queue below. This way the process |
| will be sleeping while holding the lock, without losing its |
| priority after any wake_up(). |
| */ |
| err = wait_event_interruptible_exclusive(cam->wait_open, |
| (cam->state & DEV_DISCONNECTED) |
| || !cam->users); |
| down_read(&sn9c102_dev_lock); |
| if (err) |
| goto out; |
| if (cam->state & DEV_DISCONNECTED) { |
| err = -ENODEV; |
| goto out; |
| } |
| } |
| |
| if (cam->state & DEV_MISCONFIGURED) { |
| err = sn9c102_init(cam); |
| if (err) { |
| DBG(1, "Initialization failed again. " |
| "I will retry on next open()."); |
| goto out; |
| } |
| cam->state &= ~DEV_MISCONFIGURED; |
| } |
| |
| if ((err = sn9c102_start_transfer(cam))) |
| goto out; |
| |
| filp->private_data = cam; |
| cam->users++; |
| cam->io = IO_NONE; |
| cam->stream = STREAM_OFF; |
| cam->nbuffers = 0; |
| cam->frame_count = 0; |
| sn9c102_empty_framequeues(cam); |
| |
| DBG(3, "Video device %s is open", video_device_node_name(cam->v4ldev)); |
| |
| out: |
| mutex_unlock(&cam->open_mutex); |
| if (err) |
| kref_put(&cam->kref, sn9c102_release_resources); |
| |
| up_read(&sn9c102_dev_lock); |
| return err; |
| } |
| |
| |
| static int sn9c102_release(struct file *filp) |
| { |
| struct sn9c102_device* cam; |
| |
| down_write(&sn9c102_dev_lock); |
| |
| cam = video_drvdata(filp); |
| |
| sn9c102_stop_transfer(cam); |
| sn9c102_release_buffers(cam); |
| cam->users--; |
| wake_up_interruptible_nr(&cam->wait_open, 1); |
| |
| DBG(3, "Video device %s closed", video_device_node_name(cam->v4ldev)); |
| |
| kref_put(&cam->kref, sn9c102_release_resources); |
| |
| up_write(&sn9c102_dev_lock); |
| |
| return 0; |
| } |
| |
| |
| static ssize_t |
| sn9c102_read(struct file* filp, char __user * buf, size_t count, loff_t* f_pos) |
| { |
| struct sn9c102_device *cam = video_drvdata(filp); |
| struct sn9c102_frame_t* f, * i; |
| unsigned long lock_flags; |
| long timeout; |
| int err = 0; |
| |
| if (mutex_lock_interruptible(&cam->fileop_mutex)) |
| return -ERESTARTSYS; |
| |
| if (cam->state & DEV_DISCONNECTED) { |
| DBG(1, "Device not present"); |
| mutex_unlock(&cam->fileop_mutex); |
| return -ENODEV; |
| } |
| |
| if (cam->state & DEV_MISCONFIGURED) { |
| DBG(1, "The camera is misconfigured. Close and open it " |
| "again."); |
| mutex_unlock(&cam->fileop_mutex); |
| return -EIO; |
| } |
| |
| if (cam->io == IO_MMAP) { |
| DBG(3, "Close and open the device again to choose " |
| "the read method"); |
| mutex_unlock(&cam->fileop_mutex); |
| return -EBUSY; |
| } |
| |
| if (cam->io == IO_NONE) { |
| if (!sn9c102_request_buffers(cam,cam->nreadbuffers, IO_READ)) { |
| DBG(1, "read() failed, not enough memory"); |
| mutex_unlock(&cam->fileop_mutex); |
| return -ENOMEM; |
| } |
| cam->io = IO_READ; |
| cam->stream = STREAM_ON; |
| } |
| |
| if (list_empty(&cam->inqueue)) { |
| if (!list_empty(&cam->outqueue)) |
| sn9c102_empty_framequeues(cam); |
| sn9c102_queue_unusedframes(cam); |
| } |
| |
| if (!count) { |
| mutex_unlock(&cam->fileop_mutex); |
| return 0; |
| } |
| |
| if (list_empty(&cam->outqueue)) { |
| if (filp->f_flags & O_NONBLOCK) { |
| mutex_unlock(&cam->fileop_mutex); |
| return -EAGAIN; |
| } |
| if (!cam->module_param.frame_timeout) { |
| err = wait_event_interruptible |
| ( cam->wait_frame, |
| (!list_empty(&cam->outqueue)) || |
| (cam->state & DEV_DISCONNECTED) || |
| (cam->state & DEV_MISCONFIGURED) ); |
| if (err) { |
| mutex_unlock(&cam->fileop_mutex); |
| return err; |
| } |
| } else { |
| timeout = wait_event_interruptible_timeout |
| ( cam->wait_frame, |
| (!list_empty(&cam->outqueue)) || |
| (cam->state & DEV_DISCONNECTED) || |
| (cam->state & DEV_MISCONFIGURED), |
| msecs_to_jiffies( |
| cam->module_param.frame_timeout * 1000 |
| ) |
| ); |
| if (timeout < 0) { |
| mutex_unlock(&cam->fileop_mutex); |
| return timeout; |
| } else if (timeout == 0 && |
| !(cam->state & DEV_DISCONNECTED)) { |
| DBG(1, "Video frame timeout elapsed"); |
| mutex_unlock(&cam->fileop_mutex); |
| return -EIO; |
| } |
| } |
| if (cam->state & DEV_DISCONNECTED) { |
| mutex_unlock(&cam->fileop_mutex); |
| return -ENODEV; |
| } |
| if (cam->state & DEV_MISCONFIGURED) { |
| mutex_unlock(&cam->fileop_mutex); |
| return -EIO; |
| } |
| } |
| |
| f = list_entry(cam->outqueue.prev, struct sn9c102_frame_t, frame); |
| |
| if (count > f->buf.bytesused) |
| count = f->buf.bytesused; |
| |
| if (copy_to_user(buf, f->bufmem, count)) { |
| err = -EFAULT; |
| goto exit; |
| } |
| *f_pos += count; |
| |
| exit: |
| spin_lock_irqsave(&cam->queue_lock, lock_flags); |
| list_for_each_entry(i, &cam->outqueue, frame) |
| i->state = F_UNUSED; |
| INIT_LIST_HEAD(&cam->outqueue); |
| spin_unlock_irqrestore(&cam->queue_lock, lock_flags); |
| |
| sn9c102_queue_unusedframes(cam); |
| |
| PDBGG("Frame #%lu, bytes read: %zu", |
| (unsigned long)f->buf.index, count); |
| |
| mutex_unlock(&cam->fileop_mutex); |
| |
| return count; |
| } |
| |
| |
| static unsigned int sn9c102_poll(struct file *filp, poll_table *wait) |
| { |
| struct sn9c102_device *cam = video_drvdata(filp); |
| struct sn9c102_frame_t* f; |
| unsigned long lock_flags; |
| unsigned int mask = 0; |
| |
| if (mutex_lock_interruptible(&cam->fileop_mutex)) |
| return POLLERR; |
| |
| if (cam->state & DEV_DISCONNECTED) { |
| DBG(1, "Device not present"); |
| goto error; |
| } |
| |
| if (cam->state & DEV_MISCONFIGURED) { |
| DBG(1, "The camera is misconfigured. Close and open it " |
| "again."); |
| goto error; |
| } |
| |
| if (cam->io == IO_NONE) { |
| if (!sn9c102_request_buffers(cam, cam->nreadbuffers, |
| IO_READ)) { |
| DBG(1, "poll() failed, not enough memory"); |
| goto error; |
| } |
| cam->io = IO_READ; |
| cam->stream = STREAM_ON; |
| } |
| |
| if (cam->io == IO_READ) { |
| spin_lock_irqsave(&cam->queue_lock, lock_flags); |
| list_for_each_entry(f, &cam->outqueue, frame) |
| f->state = F_UNUSED; |
| INIT_LIST_HEAD(&cam->outqueue); |
| spin_unlock_irqrestore(&cam->queue_lock, lock_flags); |
| sn9c102_queue_unusedframes(cam); |
| } |
| |
| poll_wait(filp, &cam->wait_frame, wait); |
| |
| if (!list_empty(&cam->outqueue)) |
| mask |= POLLIN | POLLRDNORM; |
| |
| mutex_unlock(&cam->fileop_mutex); |
| |
| return mask; |
| |
| error: |
| mutex_unlock(&cam->fileop_mutex); |
| return POLLERR; |
| } |
| |
| |
| static void sn9c102_vm_open(struct vm_area_struct* vma) |
| { |
| struct sn9c102_frame_t* f = vma->vm_private_data; |
| f->vma_use_count++; |
| } |
| |
| |
| static void sn9c102_vm_close(struct vm_area_struct* vma) |
| { |
| /* NOTE: buffers are not freed here */ |
| struct sn9c102_frame_t* f = vma->vm_private_data; |
| f->vma_use_count--; |
| } |
| |
| |
| static const struct vm_operations_struct sn9c102_vm_ops = { |
| .open = sn9c102_vm_open, |
| .close = sn9c102_vm_close, |
| }; |
| |
| |
| static int sn9c102_mmap(struct file* filp, struct vm_area_struct *vma) |
| { |
| struct sn9c102_device *cam = video_drvdata(filp); |
| unsigned long size = vma->vm_end - vma->vm_start, |
| start = vma->vm_start; |
| void *pos; |
| u32 i; |
| |
| if (mutex_lock_interruptible(&cam->fileop_mutex)) |
| return -ERESTARTSYS; |
| |
| if (cam->state & DEV_DISCONNECTED) { |
| DBG(1, "Device not present"); |
| mutex_unlock(&cam->fileop_mutex); |
| return -ENODEV; |
| } |
| |
| if (cam->state & DEV_MISCONFIGURED) { |
| DBG(1, "The camera is misconfigured. Close and open it " |
| "again."); |
| mutex_unlock(&cam->fileop_mutex); |
| return -EIO; |
| } |
| |
| if (!(vma->vm_flags & (VM_WRITE | VM_READ))) { |
| mutex_unlock(&cam->fileop_mutex); |
| return -EACCES; |
| } |
| |
| if (cam->io != IO_MMAP || |
| size != PAGE_ALIGN(cam->frame[0].buf.length)) { |
| mutex_unlock(&cam->fileop_mutex); |
| return -EINVAL; |
| } |
| |
| for (i = 0; i < cam->nbuffers; i++) { |
| if ((cam->frame[i].buf.m.offset>>PAGE_SHIFT) == vma->vm_pgoff) |
| break; |
| } |
| if (i == cam->nbuffers) { |
| mutex_unlock(&cam->fileop_mutex); |
| return -EINVAL; |
| } |
| |
| vma->vm_flags |= VM_IO; |
| vma->vm_flags |= VM_RESERVED; |
| |
| pos = cam->frame[i].bufmem; |
| while (size > 0) { /* size is page-aligned */ |
| if (vm_insert_page(vma, start, vmalloc_to_page(pos))) { |
| mutex_unlock(&cam->fileop_mutex); |
| return -EAGAIN; |
| } |
| start += PAGE_SIZE; |
| pos += PAGE_SIZE; |
| size -= PAGE_SIZE; |
| } |
| |
| vma->vm_ops = &sn9c102_vm_ops; |
| vma->vm_private_data = &cam->frame[i]; |
| sn9c102_vm_open(vma); |
| |
| mutex_unlock(&cam->fileop_mutex); |
| |
| return 0; |
| } |
| |
| /*****************************************************************************/ |
| |
| static int |
| sn9c102_vidioc_querycap(struct sn9c102_device* cam, void __user * arg) |
| { |
| struct v4l2_capability cap = { |
| .driver = "sn9c102", |
| .version = LINUX_VERSION_CODE, |
| .capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | |
| V4L2_CAP_STREAMING, |
| }; |
| |
| strlcpy(cap.card, cam->v4ldev->name, sizeof(cap.card)); |
| if (usb_make_path(cam->usbdev, cap.bus_info, sizeof(cap.bus_info)) < 0) |
| strlcpy(cap.bus_info, dev_name(&cam->usbdev->dev), |
| sizeof(cap.bus_info)); |
| |
| if (copy_to_user(arg, &cap, sizeof(cap))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_enuminput(struct sn9c102_device* cam, void __user * arg) |
| { |
| struct v4l2_input i; |
| |
| if (copy_from_user(&i, arg, sizeof(i))) |
| return -EFAULT; |
| |
| if (i.index) |
| return -EINVAL; |
| |
| memset(&i, 0, sizeof(i)); |
| strcpy(i.name, "Camera"); |
| i.type = V4L2_INPUT_TYPE_CAMERA; |
| i.capabilities = V4L2_IN_CAP_STD; |
| |
| if (copy_to_user(arg, &i, sizeof(i))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_g_input(struct sn9c102_device* cam, void __user * arg) |
| { |
| int index = 0; |
| |
| if (copy_to_user(arg, &index, sizeof(index))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_s_input(struct sn9c102_device* cam, void __user * arg) |
| { |
| int index; |
| |
| if (copy_from_user(&index, arg, sizeof(index))) |
| return -EFAULT; |
| |
| if (index != 0) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_query_ctrl(struct sn9c102_device* cam, void __user * arg) |
| { |
| struct sn9c102_sensor* s = &cam->sensor; |
| struct v4l2_queryctrl qc; |
| u8 i; |
| |
| if (copy_from_user(&qc, arg, sizeof(qc))) |
| return -EFAULT; |
| |
| for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) |
| if (qc.id && qc.id == s->qctrl[i].id) { |
| memcpy(&qc, &(s->qctrl[i]), sizeof(qc)); |
| if (copy_to_user(arg, &qc, sizeof(qc))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| return -EINVAL; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_g_ctrl(struct sn9c102_device* cam, void __user * arg) |
| { |
| struct sn9c102_sensor* s = &cam->sensor; |
| struct v4l2_control ctrl; |
| int err = 0; |
| u8 i; |
| |
| if (!s->get_ctrl && !s->set_ctrl) |
| return -EINVAL; |
| |
| if (copy_from_user(&ctrl, arg, sizeof(ctrl))) |
| return -EFAULT; |
| |
| if (!s->get_ctrl) { |
| for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) |
| if (ctrl.id && ctrl.id == s->qctrl[i].id) { |
| ctrl.value = s->_qctrl[i].default_value; |
| goto exit; |
| } |
| return -EINVAL; |
| } else |
| err = s->get_ctrl(cam, &ctrl); |
| |
| exit: |
| if (copy_to_user(arg, &ctrl, sizeof(ctrl))) |
| return -EFAULT; |
| |
| PDBGG("VIDIOC_G_CTRL: id %lu, value %lu", |
| (unsigned long)ctrl.id, (unsigned long)ctrl.value); |
| |
| return err; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_s_ctrl(struct sn9c102_device* cam, void __user * arg) |
| { |
| struct sn9c102_sensor* s = &cam->sensor; |
| struct v4l2_control ctrl; |
| u8 i; |
| int err = 0; |
| |
| if (!s->set_ctrl) |
| return -EINVAL; |
| |
| if (copy_from_user(&ctrl, arg, sizeof(ctrl))) |
| return -EFAULT; |
| |
| for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) { |
| if (ctrl.id == s->qctrl[i].id) { |
| if (s->qctrl[i].flags & V4L2_CTRL_FLAG_DISABLED) |
| return -EINVAL; |
| if (ctrl.value < s->qctrl[i].minimum || |
| ctrl.value > s->qctrl[i].maximum) |
| return -ERANGE; |
| ctrl.value -= ctrl.value % s->qctrl[i].step; |
| break; |
| } |
| } |
| if (i == ARRAY_SIZE(s->qctrl)) |
| return -EINVAL; |
| if ((err = s->set_ctrl(cam, &ctrl))) |
| return err; |
| |
| s->_qctrl[i].default_value = ctrl.value; |
| |
| PDBGG("VIDIOC_S_CTRL: id %lu, value %lu", |
| (unsigned long)ctrl.id, (unsigned long)ctrl.value); |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_cropcap(struct sn9c102_device* cam, void __user * arg) |
| { |
| struct v4l2_cropcap* cc = &(cam->sensor.cropcap); |
| |
| cc->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| cc->pixelaspect.numerator = 1; |
| cc->pixelaspect.denominator = 1; |
| |
| if (copy_to_user(arg, cc, sizeof(*cc))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_g_crop(struct sn9c102_device* cam, void __user * arg) |
| { |
| struct sn9c102_sensor* s = &cam->sensor; |
| struct v4l2_crop crop = { |
| .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, |
| }; |
| |
| memcpy(&(crop.c), &(s->_rect), sizeof(struct v4l2_rect)); |
| |
| if (copy_to_user(arg, &crop, sizeof(crop))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_s_crop(struct sn9c102_device* cam, void __user * arg) |
| { |
| struct sn9c102_sensor* s = &cam->sensor; |
| struct v4l2_crop crop; |
| struct v4l2_rect* rect; |
| struct v4l2_rect* bounds = &(s->cropcap.bounds); |
| struct v4l2_pix_format* pix_format = &(s->pix_format); |
| u8 scale; |
| const enum sn9c102_stream_state stream = cam->stream; |
| const u32 nbuffers = cam->nbuffers; |
| u32 i; |
| int err = 0; |
| |
| if (copy_from_user(&crop, arg, sizeof(crop))) |
| return -EFAULT; |
| |
| rect = &(crop.c); |
| |
| if (crop.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| return -EINVAL; |
| |
| if (cam->module_param.force_munmap) |
| for (i = 0; i < cam->nbuffers; i++) |
| if (cam->frame[i].vma_use_count) { |
| DBG(3, "VIDIOC_S_CROP failed. " |
| "Unmap the buffers first."); |
| return -EBUSY; |
| } |
| |
| /* Preserve R,G or B origin */ |
| rect->left = (s->_rect.left & 1L) ? rect->left | 1L : rect->left & ~1L; |
| rect->top = (s->_rect.top & 1L) ? rect->top | 1L : rect->top & ~1L; |
| |
| if (rect->width < 16) |
| rect->width = 16; |
| if (rect->height < 16) |
| rect->height = 16; |
| if (rect->width > bounds->width) |
| rect->width = bounds->width; |
| if (rect->height > bounds->height) |
| rect->height = bounds->height; |
| if (rect->left < bounds->left) |
| rect->left = bounds->left; |
| if (rect->top < bounds->top) |
| rect->top = bounds->top; |
| if (rect->left + rect->width > bounds->left + bounds->width) |
| rect->left = bounds->left+bounds->width - rect->width; |
| if (rect->top + rect->height > bounds->top + bounds->height) |
| rect->top = bounds->top+bounds->height - rect->height; |
| |
| rect->width &= ~15L; |
| rect->height &= ~15L; |
| |
| if (SN9C102_PRESERVE_IMGSCALE) { |
| /* Calculate the actual scaling factor */ |
| u32 a, b; |
| a = rect->width * rect->height; |
| b = pix_format->width * pix_format->height; |
| scale = b ? (u8)((a / b) < 4 ? 1 : ((a / b) < 16 ? 2 : 4)) : 1; |
| } else |
| scale = 1; |
| |
| if (cam->stream == STREAM_ON) |
| if ((err = sn9c102_stream_interrupt(cam))) |
| return err; |
| |
| if (copy_to_user(arg, &crop, sizeof(crop))) { |
| cam->stream = stream; |
| return -EFAULT; |
| } |
| |
| if (cam->module_param.force_munmap || cam->io == IO_READ) |
| sn9c102_release_buffers(cam); |
| |
| err = sn9c102_set_crop(cam, rect); |
| if (s->set_crop) |
| err += s->set_crop(cam, rect); |
| err += sn9c102_set_scale(cam, scale); |
| |
| if (err) { /* atomic, no rollback in ioctl() */ |
| cam->state |= DEV_MISCONFIGURED; |
| DBG(1, "VIDIOC_S_CROP failed because of hardware problems. To " |
| "use the camera, close and open %s again.", |
| video_device_node_name(cam->v4ldev)); |
| return -EIO; |
| } |
| |
| s->pix_format.width = rect->width/scale; |
| s->pix_format.height = rect->height/scale; |
| memcpy(&(s->_rect), rect, sizeof(*rect)); |
| |
| if ((cam->module_param.force_munmap || cam->io == IO_READ) && |
| nbuffers != sn9c102_request_buffers(cam, nbuffers, cam->io)) { |
| cam->state |= DEV_MISCONFIGURED; |
| DBG(1, "VIDIOC_S_CROP failed because of not enough memory. To " |
| "use the camera, close and open %s again.", |
| video_device_node_name(cam->v4ldev)); |
| return -ENOMEM; |
| } |
| |
| if (cam->io == IO_READ) |
| sn9c102_empty_framequeues(cam); |
| else if (cam->module_param.force_munmap) |
| sn9c102_requeue_outqueue(cam); |
| |
| cam->stream = stream; |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_enum_framesizes(struct sn9c102_device* cam, void __user * arg) |
| { |
| struct v4l2_frmsizeenum frmsize; |
| |
| if (copy_from_user(&frmsize, arg, sizeof(frmsize))) |
| return -EFAULT; |
| |
| if (frmsize.index != 0) |
| return -EINVAL; |
| |
| switch (cam->bridge) { |
| case BRIDGE_SN9C101: |
| case BRIDGE_SN9C102: |
| case BRIDGE_SN9C103: |
| if (frmsize.pixel_format != V4L2_PIX_FMT_SN9C10X && |
| frmsize.pixel_format != V4L2_PIX_FMT_SBGGR8) |
| return -EINVAL; |
| case BRIDGE_SN9C105: |
| case BRIDGE_SN9C120: |
| if (frmsize.pixel_format != V4L2_PIX_FMT_JPEG && |
| frmsize.pixel_format != V4L2_PIX_FMT_SBGGR8) |
| return -EINVAL; |
| } |
| |
| frmsize.type = V4L2_FRMSIZE_TYPE_STEPWISE; |
| frmsize.stepwise.min_width = frmsize.stepwise.step_width = 16; |
| frmsize.stepwise.min_height = frmsize.stepwise.step_height = 16; |
| frmsize.stepwise.max_width = cam->sensor.cropcap.bounds.width; |
| frmsize.stepwise.max_height = cam->sensor.cropcap.bounds.height; |
| memset(&frmsize.reserved, 0, sizeof(frmsize.reserved)); |
| |
| if (copy_to_user(arg, &frmsize, sizeof(frmsize))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_enum_fmt(struct sn9c102_device* cam, void __user * arg) |
| { |
| struct v4l2_fmtdesc fmtd; |
| |
| if (copy_from_user(&fmtd, arg, sizeof(fmtd))) |
| return -EFAULT; |
| |
| if (fmtd.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| return -EINVAL; |
| |
| if (fmtd.index == 0) { |
| strcpy(fmtd.description, "bayer rgb"); |
| fmtd.pixelformat = V4L2_PIX_FMT_SBGGR8; |
| } else if (fmtd.index == 1) { |
| switch (cam->bridge) { |
| case BRIDGE_SN9C101: |
| case BRIDGE_SN9C102: |
| case BRIDGE_SN9C103: |
| strcpy(fmtd.description, "compressed"); |
| fmtd.pixelformat = V4L2_PIX_FMT_SN9C10X; |
| break; |
| case BRIDGE_SN9C105: |
| case BRIDGE_SN9C120: |
| strcpy(fmtd.description, "JPEG"); |
| fmtd.pixelformat = V4L2_PIX_FMT_JPEG; |
| break; |
| } |
| fmtd.flags = V4L2_FMT_FLAG_COMPRESSED; |
| } else |
| return -EINVAL; |
| |
| fmtd.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| memset(&fmtd.reserved, 0, sizeof(fmtd.reserved)); |
| |
| if (copy_to_user(arg, &fmtd, sizeof(fmtd))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_g_fmt(struct sn9c102_device* cam, void __user * arg) |
| { |
| struct v4l2_format format; |
| struct v4l2_pix_format* pfmt = &(cam->sensor.pix_format); |
| |
| if (copy_from_user(&format, arg, sizeof(format))) |
| return -EFAULT; |
| |
| if (format.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| return -EINVAL; |
| |
| pfmt->colorspace = (pfmt->pixelformat == V4L2_PIX_FMT_JPEG) ? |
| V4L2_COLORSPACE_JPEG : V4L2_COLORSPACE_SRGB; |
| pfmt->bytesperline = (pfmt->pixelformat == V4L2_PIX_FMT_SN9C10X || |
| pfmt->pixelformat == V4L2_PIX_FMT_JPEG) |
| ? 0 : (pfmt->width * pfmt->priv) / 8; |
| pfmt->sizeimage = pfmt->height * ((pfmt->width*pfmt->priv)/8); |
| pfmt->field = V4L2_FIELD_NONE; |
| memcpy(&(format.fmt.pix), pfmt, sizeof(*pfmt)); |
| |
| if (copy_to_user(arg, &format, sizeof(format))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_try_s_fmt(struct sn9c102_device* cam, unsigned int cmd, |
| void __user * arg) |
| { |
| struct sn9c102_sensor* s = &cam->sensor; |
| struct v4l2_format format; |
| struct v4l2_pix_format* pix; |
| struct v4l2_pix_format* pfmt = &(s->pix_format); |
| struct v4l2_rect* bounds = &(s->cropcap.bounds); |
| struct v4l2_rect rect; |
| u8 scale; |
| const enum sn9c102_stream_state stream = cam->stream; |
| const u32 nbuffers = cam->nbuffers; |
| u32 i; |
| int err = 0; |
| |
| if (copy_from_user(&format, arg, sizeof(format))) |
| return -EFAULT; |
| |
| pix = &(format.fmt.pix); |
| |
| if (format.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| return -EINVAL; |
| |
| memcpy(&rect, &(s->_rect), sizeof(rect)); |
| |
| { /* calculate the actual scaling factor */ |
| u32 a, b; |
| a = rect.width * rect.height; |
| b = pix->width * pix->height; |
| scale = b ? (u8)((a / b) < 4 ? 1 : ((a / b) < 16 ? 2 : 4)) : 1; |
| } |
| |
| rect.width = scale * pix->width; |
| rect.height = scale * pix->height; |
| |
| if (rect.width < 16) |
| rect.width = 16; |
| if (rect.height < 16) |
| rect.height = 16; |
| if (rect.width > bounds->left + bounds->width - rect.left) |
| rect.width = bounds->left + bounds->width - rect.left; |
| if (rect.height > bounds->top + bounds->height - rect.top) |
| rect.height = bounds->top + bounds->height - rect.top; |
| |
| rect.width &= ~15L; |
| rect.height &= ~15L; |
| |
| { /* adjust the scaling factor */ |
| u32 a, b; |
| a = rect.width * rect.height; |
| b = pix->width * pix->height; |
| scale = b ? (u8)((a / b) < 4 ? 1 : ((a / b) < 16 ? 2 : 4)) : 1; |
| } |
| |
| pix->width = rect.width / scale; |
| pix->height = rect.height / scale; |
| |
| switch (cam->bridge) { |
| case BRIDGE_SN9C101: |
| case BRIDGE_SN9C102: |
| case BRIDGE_SN9C103: |
| if (pix->pixelformat != V4L2_PIX_FMT_SN9C10X && |
| pix->pixelformat != V4L2_PIX_FMT_SBGGR8) |
| pix->pixelformat = pfmt->pixelformat; |
| break; |
| case BRIDGE_SN9C105: |
| case BRIDGE_SN9C120: |
| if (pix->pixelformat != V4L2_PIX_FMT_JPEG && |
| pix->pixelformat != V4L2_PIX_FMT_SBGGR8) |
| pix->pixelformat = pfmt->pixelformat; |
| break; |
| } |
| pix->priv = pfmt->priv; /* bpp */ |
| pix->colorspace = (pix->pixelformat == V4L2_PIX_FMT_JPEG) ? |
| V4L2_COLORSPACE_JPEG : V4L2_COLORSPACE_SRGB; |
| pix->bytesperline = (pix->pixelformat == V4L2_PIX_FMT_SN9C10X || |
| pix->pixelformat == V4L2_PIX_FMT_JPEG) |
| ? 0 : (pix->width * pix->priv) / 8; |
| pix->sizeimage = pix->height * ((pix->width * pix->priv) / 8); |
| pix->field = V4L2_FIELD_NONE; |
| |
| if (cmd == VIDIOC_TRY_FMT) { |
| if (copy_to_user(arg, &format, sizeof(format))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| if (cam->module_param.force_munmap) |
| for (i = 0; i < cam->nbuffers; i++) |
| if (cam->frame[i].vma_use_count) { |
| DBG(3, "VIDIOC_S_FMT failed. Unmap the " |
| "buffers first."); |
| return -EBUSY; |
| } |
| |
| if (cam->stream == STREAM_ON) |
| if ((err = sn9c102_stream_interrupt(cam))) |
| return err; |
| |
| if (copy_to_user(arg, &format, sizeof(format))) { |
| cam->stream = stream; |
| return -EFAULT; |
| } |
| |
| if (cam->module_param.force_munmap || cam->io == IO_READ) |
| sn9c102_release_buffers(cam); |
| |
| err += sn9c102_set_pix_format(cam, pix); |
| err += sn9c102_set_crop(cam, &rect); |
| if (s->set_pix_format) |
| err += s->set_pix_format(cam, pix); |
| if (s->set_crop) |
| err += s->set_crop(cam, &rect); |
| err += sn9c102_set_scale(cam, scale); |
| |
| if (err) { /* atomic, no rollback in ioctl() */ |
| cam->state |= DEV_MISCONFIGURED; |
| DBG(1, "VIDIOC_S_FMT failed because of hardware problems. To " |
| "use the camera, close and open %s again.", |
| video_device_node_name(cam->v4ldev)); |
| return -EIO; |
| } |
| |
| memcpy(pfmt, pix, sizeof(*pix)); |
| memcpy(&(s->_rect), &rect, sizeof(rect)); |
| |
| if ((cam->module_param.force_munmap || cam->io == IO_READ) && |
| nbuffers != sn9c102_request_buffers(cam, nbuffers, cam->io)) { |
| cam->state |= DEV_MISCONFIGURED; |
| DBG(1, "VIDIOC_S_FMT failed because of not enough memory. To " |
| "use the camera, close and open %s again.", |
| video_device_node_name(cam->v4ldev)); |
| return -ENOMEM; |
| } |
| |
| if (cam->io == IO_READ) |
| sn9c102_empty_framequeues(cam); |
| else if (cam->module_param.force_munmap) |
| sn9c102_requeue_outqueue(cam); |
| |
| cam->stream = stream; |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_g_jpegcomp(struct sn9c102_device* cam, void __user * arg) |
| { |
| if (copy_to_user(arg, &cam->compression, sizeof(cam->compression))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_s_jpegcomp(struct sn9c102_device* cam, void __user * arg) |
| { |
| struct v4l2_jpegcompression jc; |
| const enum sn9c102_stream_state stream = cam->stream; |
| int err = 0; |
| |
| if (copy_from_user(&jc, arg, sizeof(jc))) |
| return -EFAULT; |
| |
| if (jc.quality != 0 && jc.quality != 1) |
| return -EINVAL; |
| |
| if (cam->stream == STREAM_ON) |
| if ((err = sn9c102_stream_interrupt(cam))) |
| return err; |
| |
| err += sn9c102_set_compression(cam, &jc); |
| if (err) { /* atomic, no rollback in ioctl() */ |
| cam->state |= DEV_MISCONFIGURED; |
| DBG(1, "VIDIOC_S_JPEGCOMP failed because of hardware problems. " |
| "To use the camera, close and open %s again.", |
| video_device_node_name(cam->v4ldev)); |
| return -EIO; |
| } |
| |
| cam->compression.quality = jc.quality; |
| |
| cam->stream = stream; |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_reqbufs(struct sn9c102_device* cam, void __user * arg) |
| { |
| struct v4l2_requestbuffers rb; |
| u32 i; |
| int err; |
| |
| if (copy_from_user(&rb, arg, sizeof(rb))) |
| return -EFAULT; |
| |
| if (rb.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
| rb.memory != V4L2_MEMORY_MMAP) |
| return -EINVAL; |
| |
| if (cam->io == IO_READ) { |
| DBG(3, "Close and open the device again to choose the mmap " |
| "I/O method"); |
| return -EBUSY; |
| } |
| |
| for (i = 0; i < cam->nbuffers; i++) |
| if (cam->frame[i].vma_use_count) { |
| DBG(3, "VIDIOC_REQBUFS failed. Previous buffers are " |
| "still mapped."); |
| return -EBUSY; |
| } |
| |
| if (cam->stream == STREAM_ON) |
| if ((err = sn9c102_stream_interrupt(cam))) |
| return err; |
| |
| sn9c102_empty_framequeues(cam); |
| |
| sn9c102_release_buffers(cam); |
| if (rb.count) |
| rb.count = sn9c102_request_buffers(cam, rb.count, IO_MMAP); |
| |
| if (copy_to_user(arg, &rb, sizeof(rb))) { |
| sn9c102_release_buffers(cam); |
| cam->io = IO_NONE; |
| return -EFAULT; |
| } |
| |
| cam->io = rb.count ? IO_MMAP : IO_NONE; |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_querybuf(struct sn9c102_device* cam, void __user * arg) |
| { |
| struct v4l2_buffer b; |
| |
| if (copy_from_user(&b, arg, sizeof(b))) |
| return -EFAULT; |
| |
| if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
| b.index >= cam->nbuffers || cam->io != IO_MMAP) |
| return -EINVAL; |
| |
| memcpy(&b, &cam->frame[b.index].buf, sizeof(b)); |
| |
| if (cam->frame[b.index].vma_use_count) |
| b.flags |= V4L2_BUF_FLAG_MAPPED; |
| |
| if (cam->frame[b.index].state == F_DONE) |
| b.flags |= V4L2_BUF_FLAG_DONE; |
| else if (cam->frame[b.index].state != F_UNUSED) |
| b.flags |= V4L2_BUF_FLAG_QUEUED; |
| |
| if (copy_to_user(arg, &b, sizeof(b))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_qbuf(struct sn9c102_device* cam, void __user * arg) |
| { |
| struct v4l2_buffer b; |
| unsigned long lock_flags; |
| |
| if (copy_from_user(&b, arg, sizeof(b))) |
| return -EFAULT; |
| |
| if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
| b.index >= cam->nbuffers || cam->io != IO_MMAP) |
| return -EINVAL; |
| |
| if (cam->frame[b.index].state != F_UNUSED) |
| return -EINVAL; |
| |
| cam->frame[b.index].state = F_QUEUED; |
| |
| spin_lock_irqsave(&cam->queue_lock, lock_flags); |
| list_add_tail(&cam->frame[b.index].frame, &cam->inqueue); |
| spin_unlock_irqrestore(&cam->queue_lock, lock_flags); |
| |
| PDBGG("Frame #%lu queued", (unsigned long)b.index); |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_dqbuf(struct sn9c102_device* cam, struct file* filp, |
| void __user * arg) |
| { |
| struct v4l2_buffer b; |
| struct sn9c102_frame_t *f; |
| unsigned long lock_flags; |
| long timeout; |
| int err = 0; |
| |
| if (copy_from_user(&b, arg, sizeof(b))) |
| return -EFAULT; |
| |
| if (b.type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io != IO_MMAP) |
| return -EINVAL; |
| |
| if (list_empty(&cam->outqueue)) { |
| if (cam->stream == STREAM_OFF) |
| return -EINVAL; |
| if (filp->f_flags & O_NONBLOCK) |
| return -EAGAIN; |
| if (!cam->module_param.frame_timeout) { |
| err = wait_event_interruptible |
| ( cam->wait_frame, |
| (!list_empty(&cam->outqueue)) || |
| (cam->state & DEV_DISCONNECTED) || |
| (cam->state & DEV_MISCONFIGURED) ); |
| if (err) |
| return err; |
| } else { |
| timeout = wait_event_interruptible_timeout |
| ( cam->wait_frame, |
| (!list_empty(&cam->outqueue)) || |
| (cam->state & DEV_DISCONNECTED) || |
| (cam->state & DEV_MISCONFIGURED), |
| cam->module_param.frame_timeout * |
| 1000 * msecs_to_jiffies(1) ); |
| if (timeout < 0) |
| return timeout; |
| else if (timeout == 0 && |
| !(cam->state & DEV_DISCONNECTED)) { |
| DBG(1, "Video frame timeout elapsed"); |
| return -EIO; |
| } |
| } |
| if (cam->state & DEV_DISCONNECTED) |
| return -ENODEV; |
| if (cam->state & DEV_MISCONFIGURED) |
| return -EIO; |
| } |
| |
| spin_lock_irqsave(&cam->queue_lock, lock_flags); |
| f = list_entry(cam->outqueue.next, struct sn9c102_frame_t, frame); |
| list_del(cam->outqueue.next); |
| spin_unlock_irqrestore(&cam->queue_lock, lock_flags); |
| |
| f->state = F_UNUSED; |
| |
| memcpy(&b, &f->buf, sizeof(b)); |
| if (f->vma_use_count) |
| b.flags |= V4L2_BUF_FLAG_MAPPED; |
| |
| if (copy_to_user(arg, &b, sizeof(b))) |
| return -EFAULT; |
| |
| PDBGG("Frame #%lu dequeued", (unsigned long)f->buf.index); |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_streamon(struct sn9c102_device* cam, void __user * arg) |
| { |
| int type; |
| |
| if (copy_from_user(&type, arg, sizeof(type))) |
| return -EFAULT; |
| |
| if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io != IO_MMAP) |
| return -EINVAL; |
| |
| cam->stream = STREAM_ON; |
| |
| DBG(3, "Stream on"); |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_streamoff(struct sn9c102_device* cam, void __user * arg) |
| { |
| int type, err; |
| |
| if (copy_from_user(&type, arg, sizeof(type))) |
| return -EFAULT; |
| |
| if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io != IO_MMAP) |
| return -EINVAL; |
| |
| if (cam->stream == STREAM_ON) |
| if ((err = sn9c102_stream_interrupt(cam))) |
| return err; |
| |
| sn9c102_empty_framequeues(cam); |
| |
| DBG(3, "Stream off"); |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_g_parm(struct sn9c102_device* cam, void __user * arg) |
| { |
| struct v4l2_streamparm sp; |
| |
| if (copy_from_user(&sp, arg, sizeof(sp))) |
| return -EFAULT; |
| |
| if (sp.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| return -EINVAL; |
| |
| sp.parm.capture.extendedmode = 0; |
| sp.parm.capture.readbuffers = cam->nreadbuffers; |
| |
| if (copy_to_user(arg, &sp, sizeof(sp))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_s_parm(struct sn9c102_device* cam, void __user * arg) |
| { |
| struct v4l2_streamparm sp; |
| |
| if (copy_from_user(&sp, arg, sizeof(sp))) |
| return -EFAULT; |
| |
| if (sp.type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| return -EINVAL; |
| |
| sp.parm.capture.extendedmode = 0; |
| |
| if (sp.parm.capture.readbuffers == 0) |
| sp.parm.capture.readbuffers = cam->nreadbuffers; |
| |
| if (sp.parm.capture.readbuffers > SN9C102_MAX_FRAMES) |
| sp.parm.capture.readbuffers = SN9C102_MAX_FRAMES; |
| |
| if (copy_to_user(arg, &sp, sizeof(sp))) |
| return -EFAULT; |
| |
| cam->nreadbuffers = sp.parm.capture.readbuffers; |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_enumaudio(struct sn9c102_device* cam, void __user * arg) |
| { |
| struct v4l2_audio audio; |
| |
| if (cam->bridge == BRIDGE_SN9C101 || cam->bridge == BRIDGE_SN9C102) |
| return -EINVAL; |
| |
| if (copy_from_user(&audio, arg, sizeof(audio))) |
| return -EFAULT; |
| |
| if (audio.index != 0) |
| return -EINVAL; |
| |
| strcpy(audio.name, "Microphone"); |
| audio.capability = 0; |
| audio.mode = 0; |
| |
| if (copy_to_user(arg, &audio, sizeof(audio))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_g_audio(struct sn9c102_device* cam, void __user * arg) |
| { |
| struct v4l2_audio audio; |
| |
| if (cam->bridge == BRIDGE_SN9C101 || cam->bridge == BRIDGE_SN9C102) |
| return -EINVAL; |
| |
| if (copy_from_user(&audio, arg, sizeof(audio))) |
| return -EFAULT; |
| |
| memset(&audio, 0, sizeof(audio)); |
| strcpy(audio.name, "Microphone"); |
| |
| if (copy_to_user(arg, &audio, sizeof(audio))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| |
| static int |
| sn9c102_vidioc_s_audio(struct sn9c102_device* cam, void __user * arg) |
| { |
| struct v4l2_audio audio; |
| |
| if (cam->bridge == BRIDGE_SN9C101 || cam->bridge == BRIDGE_SN9C102) |
| return -EINVAL; |
| |
| if (copy_from_user(&audio, arg, sizeof(audio))) |
| return -EFAULT; |
| |
| if (audio.index != 0) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| |
| static long sn9c102_ioctl_v4l2(struct file *filp, |
| unsigned int cmd, void __user *arg) |
| { |
| struct sn9c102_device *cam = video_drvdata(filp); |
| |
| switch (cmd) { |
| |
| case VIDIOC_QUERYCAP: |
| return sn9c102_vidioc_querycap(cam, arg); |
| |
| case VIDIOC_ENUMINPUT: |
| return sn9c102_vidioc_enuminput(cam, arg); |
| |
| case VIDIOC_G_INPUT: |
| return sn9c102_vidioc_g_input(cam, arg); |
| |
| case VIDIOC_S_INPUT: |
| return sn9c102_vidioc_s_input(cam, arg); |
| |
| case VIDIOC_QUERYCTRL: |
| return sn9c102_vidioc_query_ctrl(cam, arg); |
| |
| case VIDIOC_G_CTRL: |
| return sn9c102_vidioc_g_ctrl(cam, arg); |
| |
| case VIDIOC_S_CTRL: |
| return sn9c102_vidioc_s_ctrl(cam, arg); |
| |
| case VIDIOC_CROPCAP: |
| return sn9c102_vidioc_cropcap(cam, arg); |
| |
| case VIDIOC_G_CROP: |
| return sn9c102_vidioc_g_crop(cam, arg); |
| |
| case VIDIOC_S_CROP: |
| return sn9c102_vidioc_s_crop(cam, arg); |
| |
| case VIDIOC_ENUM_FRAMESIZES: |
| return sn9c102_vidioc_enum_framesizes(cam, arg); |
| |
| case VIDIOC_ENUM_FMT: |
| return sn9c102_vidioc_enum_fmt(cam, arg); |
| |
| case VIDIOC_G_FMT: |
| return sn9c102_vidioc_g_fmt(cam, arg); |
| |
| case VIDIOC_TRY_FMT: |
| case VIDIOC_S_FMT: |
| return sn9c102_vidioc_try_s_fmt(cam, cmd, arg); |
| |
| case VIDIOC_G_JPEGCOMP: |
| return sn9c102_vidioc_g_jpegcomp(cam, arg); |
| |
| case VIDIOC_S_JPEGCOMP: |
| return sn9c102_vidioc_s_jpegcomp(cam, arg); |
| |
| case VIDIOC_REQBUFS: |
| return sn9c102_vidioc_reqbufs(cam, arg); |
| |
| case VIDIOC_QUERYBUF: |
| return sn9c102_vidioc_querybuf(cam, arg); |
| |
| case VIDIOC_QBUF: |
| return sn9c102_vidioc_qbuf(cam, arg); |
| |
| case VIDIOC_DQBUF: |
| return sn9c102_vidioc_dqbuf(cam, filp, arg); |
| |
| case VIDIOC_STREAMON: |
| return sn9c102_vidioc_streamon(cam, arg); |
| |
| case VIDIOC_STREAMOFF: |
| return sn9c102_vidioc_streamoff(cam, arg); |
| |
| case VIDIOC_G_PARM: |
| return sn9c102_vidioc_g_parm(cam, arg); |
| |
| case VIDIOC_S_PARM: |
| return sn9c102_vidioc_s_parm(cam, arg); |
| |
| case VIDIOC_ENUMAUDIO: |
| return sn9c102_vidioc_enumaudio(cam, arg); |
| |
| case VIDIOC_G_AUDIO: |
| return sn9c102_vidioc_g_audio(cam, arg); |
| |
| case VIDIOC_S_AUDIO: |
| return sn9c102_vidioc_s_audio(cam, arg); |
| |
| default: |
| return -ENOTTY; |
| |
| } |
| } |
| |
| |
| static long sn9c102_ioctl(struct file *filp, |
| unsigned int cmd, unsigned long arg) |
| { |
| struct sn9c102_device *cam = video_drvdata(filp); |
| int err = 0; |
| |
| if (mutex_lock_interruptible(&cam->fileop_mutex)) |
| return -ERESTARTSYS; |
| |
| if (cam->state & DEV_DISCONNECTED) { |
| DBG(1, "Device not present"); |
| mutex_unlock(&cam->fileop_mutex); |
| return -ENODEV; |
| } |
| |
| if (cam->state & DEV_MISCONFIGURED) { |
| DBG(1, "The camera is misconfigured. Close and open it " |
| "again."); |
| mutex_unlock(&cam->fileop_mutex); |
| return -EIO; |
| } |
| |
| V4LDBG(3, "sn9c102", cmd); |
| |
| err = sn9c102_ioctl_v4l2(filp, cmd, (void __user *)arg); |
| |
| mutex_unlock(&cam->fileop_mutex); |
| |
| return err; |
| } |
| |
| /*****************************************************************************/ |
| |
| static const struct v4l2_file_operations sn9c102_fops = { |
| .owner = THIS_MODULE, |
| .open = sn9c102_open, |
| .release = sn9c102_release, |
| .unlocked_ioctl = sn9c102_ioctl, |
| .read = sn9c102_read, |
| .poll = sn9c102_poll, |
| .mmap = sn9c102_mmap, |
| }; |
| |
| /*****************************************************************************/ |
| |
| /* It exists a single interface only. We do not need to validate anything. */ |
| static int |
| sn9c102_usb_probe(struct usb_interface* intf, const struct usb_device_id* id) |
| { |
| struct usb_device *udev = interface_to_usbdev(intf); |
| struct sn9c102_device* cam; |
| static unsigned int dev_nr; |
| unsigned int i; |
| int err = 0, r; |
| |
| if (!(cam = kzalloc(sizeof(struct sn9c102_device), GFP_KERNEL))) |
| return -ENOMEM; |
| |
| cam->usbdev = udev; |
| |
| if (!(cam->control_buffer = kzalloc(8, GFP_KERNEL))) { |
| DBG(1, "kzalloc() failed"); |
| err = -ENOMEM; |
| goto fail; |
| } |
| |
| if (!(cam->v4ldev = video_device_alloc())) { |
| DBG(1, "video_device_alloc() failed"); |
| err = -ENOMEM; |
| goto fail; |
| } |
| |
| r = sn9c102_read_reg(cam, 0x00); |
| if (r < 0 || (r != 0x10 && r != 0x11 && r != 0x12)) { |
| DBG(1, "Sorry, this is not a SN9C1xx-based camera " |
| "(vid:pid 0x%04X:0x%04X)", id->idVendor, id->idProduct); |
| err = -ENODEV; |
| goto fail; |
| } |
| |
| cam->bridge = id->driver_info; |
| switch (cam->bridge) { |
| case BRIDGE_SN9C101: |
| case BRIDGE_SN9C102: |
| DBG(2, "SN9C10[12] PC Camera Controller detected " |
| "(vid:pid 0x%04X:0x%04X)", id->idVendor, id->idProduct); |
| break; |
| case BRIDGE_SN9C103: |
| DBG(2, "SN9C103 PC Camera Controller detected " |
| "(vid:pid 0x%04X:0x%04X)", id->idVendor, id->idProduct); |
| break; |
| case BRIDGE_SN9C105: |
| DBG(2, "SN9C105 PC Camera Controller detected " |
| "(vid:pid 0x%04X:0x%04X)", id->idVendor, id->idProduct); |
| break; |
| case BRIDGE_SN9C120: |
| DBG(2, "SN9C120 PC Camera Controller detected " |
| "(vid:pid 0x%04X:0x%04X)", id->idVendor, id->idProduct); |
| break; |
| } |
| |
| for (i = 0; i < ARRAY_SIZE(sn9c102_sensor_table); i++) { |
| err = sn9c102_sensor_table[i](cam); |
| if (!err) |
| break; |
| } |
| |
| if (!err) { |
| DBG(2, "%s image sensor detected", cam->sensor.name); |
| DBG(3, "Support for %s maintained by %s", |
| cam->sensor.name, cam->sensor.maintainer); |
| } else { |
| DBG(1, "No supported image sensor detected for this bridge"); |
| err = -ENODEV; |
| goto fail; |
| } |
| |
| if (!(cam->bridge & cam->sensor.supported_bridge)) { |
| DBG(1, "Bridge not supported"); |
| err = -ENODEV; |
| goto fail; |
| } |
| |
| if (sn9c102_init(cam)) { |
| DBG(1, "Initialization failed. I will retry on open()."); |
| cam->state |= DEV_MISCONFIGURED; |
| } |
| |
| strcpy(cam->v4ldev->name, "SN9C1xx PC Camera"); |
| cam->v4ldev->fops = &sn9c102_fops; |
| cam->v4ldev->release = video_device_release; |
| cam->v4ldev->parent = &udev->dev; |
| |
| init_completion(&cam->probe); |
| |
| err = video_register_device(cam->v4ldev, VFL_TYPE_GRABBER, |
| video_nr[dev_nr]); |
| if (err) { |
| DBG(1, "V4L2 device registration failed"); |
| if (err == -ENFILE && video_nr[dev_nr] == -1) |
| DBG(1, "Free /dev/videoX node not found"); |
| video_nr[dev_nr] = -1; |
| dev_nr = (dev_nr < SN9C102_MAX_DEVICES-1) ? dev_nr+1 : 0; |
| complete_all(&cam->probe); |
| goto fail; |
| } |
| |
| DBG(2, "V4L2 device registered as %s", |
| video_device_node_name(cam->v4ldev)); |
| |
| video_set_drvdata(cam->v4ldev, cam); |
| cam->module_param.force_munmap = force_munmap[dev_nr]; |
| cam->module_param.frame_timeout = frame_timeout[dev_nr]; |
| |
| dev_nr = (dev_nr < SN9C102_MAX_DEVICES-1) ? dev_nr+1 : 0; |
| |
| #ifdef CONFIG_VIDEO_ADV_DEBUG |
| err = sn9c102_create_sysfs(cam); |
| if (!err) |
| DBG(2, "Optional device control through 'sysfs' " |
| "interface ready"); |
| else |
| DBG(2, "Failed to create optional 'sysfs' interface for " |
| "device controlling. Error #%d", err); |
| #else |
| DBG(2, "Optional device control through 'sysfs' interface disabled"); |
| DBG(3, "Compile the kernel with the 'CONFIG_VIDEO_ADV_DEBUG' " |
| "configuration option to enable it."); |
| #endif |
| |
| usb_set_intfdata(intf, cam); |
| kref_init(&cam->kref); |
| usb_get_dev(cam->usbdev); |
| |
| complete_all(&cam->probe); |
| |
| return 0; |
| |
| fail: |
| if (cam) { |
| kfree(cam->control_buffer); |
| if (cam->v4ldev) |
| video_device_release(cam->v4ldev); |
| kfree(cam); |
| } |
| return err; |
| } |
| |
| |
| static void sn9c102_usb_disconnect(struct usb_interface* intf) |
| { |
| struct sn9c102_device* cam; |
| |
| down_write(&sn9c102_dev_lock); |
| |
| cam = usb_get_intfdata(intf); |
| |
| DBG(2, "Disconnecting %s...", cam->v4ldev->name); |
| |
| if (cam->users) { |
| DBG(2, "Device %s is open! Deregistration and memory " |
| "deallocation are deferred.", |
| video_device_node_name(cam->v4ldev)); |
| cam->state |= DEV_MISCONFIGURED; |
| sn9c102_stop_transfer(cam); |
| cam->state |= DEV_DISCONNECTED; |
| wake_up_interruptible(&cam->wait_frame); |
| wake_up(&cam->wait_stream); |
| } else |
| cam->state |= DEV_DISCONNECTED; |
| |
| wake_up_interruptible_all(&cam->wait_open); |
| |
| kref_put(&cam->kref, sn9c102_release_resources); |
| |
| up_write(&sn9c102_dev_lock); |
| } |
| |
| |
| static struct usb_driver sn9c102_usb_driver = { |
| .name = "sn9c102", |
| .id_table = sn9c102_id_table, |
| .probe = sn9c102_usb_probe, |
| .disconnect = sn9c102_usb_disconnect, |
| }; |
| |
| module_usb_driver(sn9c102_usb_driver); |