diff options
Diffstat (limited to 'drivers/media/video/ov511.c')
| -rw-r--r-- | drivers/media/video/ov511.c | 5932 |
1 files changed, 5932 insertions, 0 deletions
diff --git a/drivers/media/video/ov511.c b/drivers/media/video/ov511.c new file mode 100644 index 000000000000..da44579d6f29 --- /dev/null +++ b/drivers/media/video/ov511.c @@ -0,0 +1,5932 @@ +/* + * OmniVision OV511 Camera-to-USB Bridge Driver + * + * Copyright (c) 1999-2003 Mark W. McClelland + * Original decompression code Copyright 1998-2000 OmniVision Technologies + * Many improvements by Bret Wallach <bwallac1@san.rr.com> + * Color fixes by by Orion Sky Lawlor <olawlor@acm.org> (2/26/2000) + * Snapshot code by Kevin Moore + * OV7620 fixes by Charl P. Botha <cpbotha@ieee.org> + * Changes by Claudio Matsuoka <claudio@conectiva.com> + * Original SAA7111A code by Dave Perks <dperks@ibm.net> + * URB error messages from pwc driver by Nemosoft + * generic_ioctl() code from videodev.c by Gerd Knorr and Alan Cox + * Memory management (rvmalloc) code from bttv driver, by Gerd Knorr and others + * + * Based on the Linux CPiA driver written by Peter Pregler, + * Scott J. Bertin and Johannes Erdfelt. + * + * Please see the file: Documentation/usb/ov511.txt + * and the website at: http://alpha.dyndns.org/ov511 + * for more info. + * + * 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/config.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/vmalloc.h> +#include <linux/slab.h> +#include <linux/ctype.h> +#include <linux/pagemap.h> +#include <asm/semaphore.h> +#include <asm/processor.h> +#include <linux/mm.h> +#include <linux/device.h> + +#if defined (__i386__) + #include <asm/cpufeature.h> +#endif + +#include "ov511.h" + +/* + * Version Information + */ +#define DRIVER_VERSION "v1.64 for Linux 2.5" +#define EMAIL "mark@alpha.dyndns.org" +#define DRIVER_AUTHOR "Mark McClelland <mark@alpha.dyndns.org> & Bret Wallach \ + & Orion Sky Lawlor <olawlor@acm.org> & Kevin Moore & Charl P. Botha \ + <cpbotha@ieee.org> & Claudio Matsuoka <claudio@conectiva.com>" +#define DRIVER_DESC "ov511 USB Camera Driver" + +#define OV511_I2C_RETRIES 3 +#define ENABLE_Y_QUANTABLE 1 +#define ENABLE_UV_QUANTABLE 1 + +#define OV511_MAX_UNIT_VIDEO 16 + +/* Pixel count * bytes per YUV420 pixel (1.5) */ +#define MAX_FRAME_SIZE(w, h) ((w) * (h) * 3 / 2) + +#define MAX_DATA_SIZE(w, h) (MAX_FRAME_SIZE(w, h) + sizeof(struct timeval)) + +/* Max size * bytes per YUV420 pixel (1.5) + one extra isoc frame for safety */ +#define MAX_RAW_DATA_SIZE(w, h) ((w) * (h) * 3 / 2 + 1024) + +#define FATAL_ERROR(rc) ((rc) < 0 && (rc) != -EPERM) + +/********************************************************************** + * Module Parameters + * (See ov511.txt for detailed descriptions of these) + **********************************************************************/ + +/* These variables (and all static globals) default to zero */ +static int autobright = 1; +static int autogain = 1; +static int autoexp = 1; +static int debug; +static int snapshot; +static int cams = 1; +static int compress; +static int testpat; +static int dumppix; +static int led = 1; +static int dump_bridge; +static int dump_sensor; +static int printph; +static int phy = 0x1f; +static int phuv = 0x05; +static int pvy = 0x06; +static int pvuv = 0x06; +static int qhy = 0x14; +static int qhuv = 0x03; +static int qvy = 0x04; +static int qvuv = 0x04; +static int lightfreq; +static int bandingfilter; +static int clockdiv = -1; +static int packetsize = -1; +static int framedrop = -1; +static int fastset; +static int force_palette; +static int backlight; +static int unit_video[OV511_MAX_UNIT_VIDEO]; +static int remove_zeros; +static int mirror; +static int ov518_color; + +module_param(autobright, int, 0); +MODULE_PARM_DESC(autobright, "Sensor automatically changes brightness"); +module_param(autogain, int, 0); +MODULE_PARM_DESC(autogain, "Sensor automatically changes gain"); +module_param(autoexp, int, 0); +MODULE_PARM_DESC(autoexp, "Sensor automatically changes exposure"); +module_param(debug, int, 0); +MODULE_PARM_DESC(debug, + "Debug level: 0=none, 1=inits, 2=warning, 3=config, 4=functions, 5=max"); +module_param(snapshot, int, 0); +MODULE_PARM_DESC(snapshot, "Enable snapshot mode"); +module_param(cams, int, 0); +MODULE_PARM_DESC(cams, "Number of simultaneous cameras"); +module_param(compress, int, 0); +MODULE_PARM_DESC(compress, "Turn on compression"); +module_param(testpat, int, 0); +MODULE_PARM_DESC(testpat, + "Replace image with vertical bar testpattern (only partially working)"); +module_param(dumppix, int, 0); +MODULE_PARM_DESC(dumppix, "Dump raw pixel data"); +module_param(led, int, 0); +MODULE_PARM_DESC(led, + "LED policy (OV511+ or later). 0=off, 1=on (default), 2=auto (on when open)"); +module_param(dump_bridge, int, 0); +MODULE_PARM_DESC(dump_bridge, "Dump the bridge registers"); +module_param(dump_sensor, int, 0); +MODULE_PARM_DESC(dump_sensor, "Dump the sensor registers"); +module_param(printph, int, 0); +MODULE_PARM_DESC(printph, "Print frame start/end headers"); +module_param(phy, int, 0); +MODULE_PARM_DESC(phy, "Prediction range (horiz. Y)"); +module_param(phuv, int, 0); +MODULE_PARM_DESC(phuv, "Prediction range (horiz. UV)"); +module_param(pvy, int, 0); +MODULE_PARM_DESC(pvy, "Prediction range (vert. Y)"); +module_param(pvuv, int, 0); +MODULE_PARM_DESC(pvuv, "Prediction range (vert. UV)"); +module_param(qhy, int, 0); +MODULE_PARM_DESC(qhy, "Quantization threshold (horiz. Y)"); +module_param(qhuv, int, 0); +MODULE_PARM_DESC(qhuv, "Quantization threshold (horiz. UV)"); +module_param(qvy, int, 0); +MODULE_PARM_DESC(qvy, "Quantization threshold (vert. Y)"); +module_param(qvuv, int, 0); +MODULE_PARM_DESC(qvuv, "Quantization threshold (vert. UV)"); +module_param(lightfreq, int, 0); +MODULE_PARM_DESC(lightfreq, + "Light frequency. Set to 50 or 60 Hz, or zero for default settings"); +module_param(bandingfilter, int, 0); +MODULE_PARM_DESC(bandingfilter, + "Enable banding filter (to reduce effects of fluorescent lighting)"); +module_param(clockdiv, int, 0); +MODULE_PARM_DESC(clockdiv, "Force pixel clock divisor to a specific value"); +module_param(packetsize, int, 0); +MODULE_PARM_DESC(packetsize, "Force a specific isoc packet size"); +module_param(framedrop, int, 0); +MODULE_PARM_DESC(framedrop, "Force a specific frame drop register setting"); +module_param(fastset, int, 0); +MODULE_PARM_DESC(fastset, "Allows picture settings to take effect immediately"); +module_param(force_palette, int, 0); +MODULE_PARM_DESC(force_palette, "Force the palette to a specific value"); +module_param(backlight, int, 0); +MODULE_PARM_DESC(backlight, "For objects that are lit from behind"); +static int num_uv; +module_param_array(unit_video, int, &num_uv, 0); +MODULE_PARM_DESC(unit_video, + "Force use of specific minor number(s). 0 is not allowed."); +module_param(remove_zeros, int, 0); +MODULE_PARM_DESC(remove_zeros, + "Remove zero-padding from uncompressed incoming data"); +module_param(mirror, int, 0); +MODULE_PARM_DESC(mirror, "Reverse image horizontally"); +module_param(ov518_color, int, 0); +MODULE_PARM_DESC(ov518_color, "Enable OV518 color (experimental)"); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); + +/********************************************************************** + * Miscellaneous Globals + **********************************************************************/ + +static struct usb_driver ov511_driver; + +/* Number of times to retry a failed I2C transaction. Increase this if you + * are getting "Failed to read sensor ID..." */ +static const int i2c_detect_tries = 5; + +static struct usb_device_id device_table [] = { + { USB_DEVICE(VEND_OMNIVISION, PROD_OV511) }, + { USB_DEVICE(VEND_OMNIVISION, PROD_OV511PLUS) }, + { USB_DEVICE(VEND_OMNIVISION, PROD_OV518) }, + { USB_DEVICE(VEND_OMNIVISION, PROD_OV518PLUS) }, + { USB_DEVICE(VEND_MATTEL, PROD_ME2CAM) }, + { } /* Terminating entry */ +}; + +MODULE_DEVICE_TABLE (usb, device_table); + +static unsigned char yQuanTable511[] = OV511_YQUANTABLE; +static unsigned char uvQuanTable511[] = OV511_UVQUANTABLE; +static unsigned char yQuanTable518[] = OV518_YQUANTABLE; +static unsigned char uvQuanTable518[] = OV518_UVQUANTABLE; + +/********************************************************************** + * Symbolic Names + **********************************************************************/ + +/* Known OV511-based cameras */ +static struct symbolic_list camlist[] = { + { 0, "Generic Camera (no ID)" }, + { 1, "Mustek WCam 3X" }, + { 3, "D-Link DSB-C300" }, + { 4, "Generic OV511/OV7610" }, + { 5, "Puretek PT-6007" }, + { 6, "Lifeview USB Life TV (NTSC)" }, + { 21, "Creative Labs WebCam 3" }, + { 22, "Lifeview USB Life TV (PAL D/K+B/G)" }, + { 36, "Koala-Cam" }, + { 38, "Lifeview USB Life TV (PAL)" }, + { 41, "Samsung Anycam MPC-M10" }, + { 43, "Mtekvision Zeca MV402" }, + { 46, "Suma eON" }, + { 70, "Lifeview USB Life TV (PAL/SECAM)" }, + { 100, "Lifeview RoboCam" }, + { 102, "AverMedia InterCam Elite" }, + { 112, "MediaForte MV300" }, /* or OV7110 evaluation kit */ + { 134, "Ezonics EZCam II" }, + { 192, "Webeye 2000B" }, + { 253, "Alpha Vision Tech. AlphaCam SE" }, + { -1, NULL } +}; + +/* Video4Linux1 Palettes */ +static struct symbolic_list v4l1_plist[] = { + { VIDEO_PALETTE_GREY, "GREY" }, + { VIDEO_PALETTE_HI240, "HI240" }, + { VIDEO_PALETTE_RGB565, "RGB565" }, + { VIDEO_PALETTE_RGB24, "RGB24" }, + { VIDEO_PALETTE_RGB32, "RGB32" }, + { VIDEO_PALETTE_RGB555, "RGB555" }, + { VIDEO_PALETTE_YUV422, "YUV422" }, + { VIDEO_PALETTE_YUYV, "YUYV" }, + { VIDEO_PALETTE_UYVY, "UYVY" }, + { VIDEO_PALETTE_YUV420, "YUV420" }, + { VIDEO_PALETTE_YUV411, "YUV411" }, + { VIDEO_PALETTE_RAW, "RAW" }, + { VIDEO_PALETTE_YUV422P,"YUV422P" }, + { VIDEO_PALETTE_YUV411P,"YUV411P" }, + { VIDEO_PALETTE_YUV420P,"YUV420P" }, + { VIDEO_PALETTE_YUV410P,"YUV410P" }, + { -1, NULL } +}; + +static struct symbolic_list brglist[] = { + { BRG_OV511, "OV511" }, + { BRG_OV511PLUS, "OV511+" }, + { BRG_OV518, "OV518" }, + { BRG_OV518PLUS, "OV518+" }, + { -1, NULL } +}; + +static struct symbolic_list senlist[] = { + { SEN_OV76BE, "OV76BE" }, + { SEN_OV7610, "OV7610" }, + { SEN_OV7620, "OV7620" }, + { SEN_OV7620AE, "OV7620AE" }, + { SEN_OV6620, "OV6620" }, + { SEN_OV6630, "OV6630" }, + { SEN_OV6630AE, "OV6630AE" }, + { SEN_OV6630AF, "OV6630AF" }, + { SEN_OV8600, "OV8600" }, + { SEN_KS0127, "KS0127" }, + { SEN_KS0127B, "KS0127B" }, + { SEN_SAA7111A, "SAA7111A" }, + { -1, NULL } +}; + +/* URB error codes: */ +static struct symbolic_list urb_errlist[] = { + { -ENOSR, "Buffer error (overrun)" }, + { -EPIPE, "Stalled (device not responding)" }, + { -EOVERFLOW, "Babble (bad cable?)" }, + { -EPROTO, "Bit-stuff error (bad cable?)" }, + { -EILSEQ, "CRC/Timeout" }, + { -ETIMEDOUT, "NAK (device does not respond)" }, + { -1, NULL } +}; + +/********************************************************************** + * Memory management + **********************************************************************/ +static void * +rvmalloc(unsigned long size) +{ + void *mem; + unsigned long adr; + + size = PAGE_ALIGN(size); + mem = vmalloc_32(size); + if (!mem) + return NULL; + + memset(mem, 0, size); /* Clear the ram out, no junk to the user */ + adr = (unsigned long) mem; + while (size > 0) { + SetPageReserved(vmalloc_to_page((void *)adr)); + adr += PAGE_SIZE; + size -= PAGE_SIZE; + } + + return mem; +} + +static void +rvfree(void *mem, unsigned long size) +{ + unsigned long adr; + + if (!mem) + return; + + adr = (unsigned long) mem; + while ((long) size > 0) { + ClearPageReserved(vmalloc_to_page((void *)adr)); + adr += PAGE_SIZE; + size -= PAGE_SIZE; + } + vfree(mem); +} + +/********************************************************************** + * + * Register I/O + * + **********************************************************************/ + +/* Write an OV51x register */ +static int +reg_w(struct usb_ov511 *ov, unsigned char reg, unsigned char value) +{ + int rc; + + PDEBUG(5, "0x%02X:0x%02X", reg, value); + + mutex_lock(&ov->cbuf_lock); + ov->cbuf[0] = value; + rc = usb_control_msg(ov->dev, + usb_sndctrlpipe(ov->dev, 0), + (ov->bclass == BCL_OV518)?1:2 /* REG_IO */, + USB_TYPE_VENDOR | USB_RECIP_DEVICE, + 0, (__u16)reg, &ov->cbuf[0], 1, 1000); + mutex_unlock(&ov->cbuf_lock); + + if (rc < 0) + err("reg write: error %d: %s", rc, symbolic(urb_errlist, rc)); + + return rc; +} + +/* Read from an OV51x register */ +/* returns: negative is error, pos or zero is data */ +static int +reg_r(struct usb_ov511 *ov, unsigned char reg) +{ + int rc; + + mutex_lock(&ov->cbuf_lock); + rc = usb_control_msg(ov->dev, + usb_rcvctrlpipe(ov->dev, 0), + (ov->bclass == BCL_OV518)?1:3 /* REG_IO */, + USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + 0, (__u16)reg, &ov->cbuf[0], 1, 1000); + + if (rc < 0) { + err("reg read: error %d: %s", rc, symbolic(urb_errlist, rc)); + } else { + rc = ov->cbuf[0]; + PDEBUG(5, "0x%02X:0x%02X", reg, ov->cbuf[0]); + } + + mutex_unlock(&ov->cbuf_lock); + + return rc; +} + +/* + * Writes bits at positions specified by mask to an OV51x reg. Bits that are in + * the same position as 1's in "mask" are cleared and set to "value". Bits + * that are in the same position as 0's in "mask" are preserved, regardless + * of their respective state in "value". + */ +static int +reg_w_mask(struct usb_ov511 *ov, + unsigned char reg, + unsigned char value, + unsigned char mask) +{ + int ret; + unsigned char oldval, newval; + + ret = reg_r(ov, reg); + if (ret < 0) + return ret; + + oldval = (unsigned char) ret; + oldval &= (~mask); /* Clear the masked bits */ + value &= mask; /* Enforce mask on value */ + newval = oldval | value; /* Set the desired bits */ + + return (reg_w(ov, reg, newval)); +} + +/* + * Writes multiple (n) byte value to a single register. Only valid with certain + * registers (0x30 and 0xc4 - 0xce). + */ +static int +ov518_reg_w32(struct usb_ov511 *ov, unsigned char reg, u32 val, int n) +{ + int rc; + + PDEBUG(5, "0x%02X:%7d, n=%d", reg, val, n); + + mutex_lock(&ov->cbuf_lock); + + *((__le32 *)ov->cbuf) = __cpu_to_le32(val); + + rc = usb_control_msg(ov->dev, + usb_sndctrlpipe(ov->dev, 0), + 1 /* REG_IO */, + USB_TYPE_VENDOR | USB_RECIP_DEVICE, + 0, (__u16)reg, ov->cbuf, n, 1000); + mutex_unlock(&ov->cbuf_lock); + + if (rc < 0) + err("reg write multiple: error %d: %s", rc, + symbolic(urb_errlist, rc)); + + return rc; +} + +static int +ov511_upload_quan_tables(struct usb_ov511 *ov) +{ + unsigned char *pYTable = yQuanTable511; + unsigned char *pUVTable = uvQuanTable511; + unsigned char val0, val1; + int i, rc, reg = R511_COMP_LUT_BEGIN; + + PDEBUG(4, "Uploading quantization tables"); + + for (i = 0; i < OV511_QUANTABLESIZE / 2; i++) { + if (ENABLE_Y_QUANTABLE) { + val0 = *pYTable++; + val1 = *pYTable++; + val0 &= 0x0f; + val1 &= 0x0f; + val0 |= val1 << 4; + rc = reg_w(ov, reg, val0); + if (rc < 0) + return rc; + } + + if (ENABLE_UV_QUANTABLE) { + val0 = *pUVTable++; + val1 = *pUVTable++; + val0 &= 0x0f; + val1 &= 0x0f; + val0 |= val1 << 4; + rc = reg_w(ov, reg + OV511_QUANTABLESIZE/2, val0); + if (rc < 0) + return rc; + } + + reg++; + } + + return 0; +} + +/* OV518 quantization tables are 8x4 (instead of 8x8) */ +static int +ov518_upload_quan_tables(struct usb_ov511 *ov) +{ + unsigned char *pYTable = yQuanTable518; + unsigned char *pUVTable = uvQuanTable518; + unsigned char val0, val1; + int i, rc, reg = R511_COMP_LUT_BEGIN; + + PDEBUG(4, "Uploading quantization tables"); + + for (i = 0; i < OV518_QUANTABLESIZE / 2; i++) { + if (ENABLE_Y_QUANTABLE) { + val0 = *pYTable++; + val1 = *pYTable++; + val0 &= 0x0f; + val1 &= 0x0f; + val0 |= val1 << 4; + rc = reg_w(ov, reg, val0); + if (rc < 0) + return rc; + } + + if (ENABLE_UV_QUANTABLE) { + val0 = *pUVTable++; + val1 = *pUVTable++; + val0 &= 0x0f; + val1 &= 0x0f; + val0 |= val1 << 4; + rc = reg_w(ov, reg + OV518_QUANTABLESIZE/2, val0); + if (rc < 0) + return rc; + } + + reg++; + } + + return 0; +} + +static int +ov51x_reset(struct usb_ov511 *ov, unsigned char reset_type) +{ + int rc; + + /* Setting bit 0 not allowed on 518/518Plus */ + if (ov->bclass == BCL_OV518) + reset_type &= 0xfe; + + PDEBUG(4, "Reset: type=0x%02X", reset_type); + + rc = reg_w(ov, R51x_SYS_RESET, reset_type); + rc = reg_w(ov, R51x_SYS_RESET, 0); + + if (rc < 0) + err("reset: command failed"); + + return rc; +} + +/********************************************************************** + * + * Low-level I2C I/O functions + * + **********************************************************************/ + +/* NOTE: Do not call this function directly! + * The OV518 I2C I/O procedure is different, hence, this function. + * This is normally only called from i2c_w(). Note that this function + * always succeeds regardless of whether the sensor is present and working. + */ +static int +ov518_i2c_write_internal(struct usb_ov511 *ov, + unsigned char reg, + unsigned char value) +{ + int rc; + + PDEBUG(5, "0x%02X:0x%02X", reg, value); + + /* Select camera register */ + rc = reg_w(ov, R51x_I2C_SADDR_3, reg); + if (rc < 0) + return rc; + + /* Write "value" to I2C data port of OV511 */ + rc = reg_w(ov, R51x_I2C_DATA, value); + if (rc < 0) + return rc; + + /* Initiate 3-byte write cycle */ + rc = reg_w(ov, R518_I2C_CTL, 0x01); + if (rc < 0) + return rc; + + return 0; +} + +/* NOTE: Do not call this function directly! */ +static int +ov511_i2c_write_internal(struct usb_ov511 *ov, + unsigned char reg, + unsigned char value) +{ + int rc, retries; + + PDEBUG(5, "0x%02X:0x%02X", reg, value); + + /* Three byte write cycle */ + for (retries = OV511_I2C_RETRIES; ; ) { + /* Select camera register */ + rc = reg_w(ov, R51x_I2C_SADDR_3, reg); + if (rc < 0) + break; + + /* Write "value" to I2C data port of OV511 */ + rc = reg_w(ov, R51x_I2C_DATA, value); + if (rc < 0) + break; + + /* Initiate 3-byte write cycle */ + rc = reg_w(ov, R511_I2C_CTL, 0x01); + if (rc < 0) + break; + + /* Retry until idle */ + do + rc = reg_r(ov, R511_I2C_CTL); + while (rc > 0 && ((rc&1) == 0)); + if (rc < 0) + break; + + /* Ack? */ + if ((rc&2) == 0) { + rc = 0; + break; + } +#if 0 + /* I2C abort */ + reg_w(ov, R511_I2C_CTL, 0x10); +#endif + if (--retries < 0) { + err("i2c write retries exhausted"); + rc = -1; + break; + } + } + + return rc; +} + +/* NOTE: Do not call this function directly! + * The OV518 I2C I/O procedure is different, hence, this function. + * This is normally only called from i2c_r(). Note that this function + * always succeeds regardless of whether the sensor is present and working. + */ +static int +ov518_i2c_read_internal(struct usb_ov511 *ov, unsigned char reg) +{ + int rc, value; + + /* Select camera register */ + rc = reg_w(ov, R51x_I2C_SADDR_2, reg); + if (rc < 0) + return rc; + + /* Initiate 2-byte write cycle */ + rc = reg_w(ov, R518_I2C_CTL, 0x03); + if (rc < 0) + return rc; + + /* Initiate 2-byte read cycle */ + rc = reg_w(ov, R518_I2C_CTL, 0x05); + if (rc < 0) + return rc; + + value = reg_r(ov, R51x_I2C_DATA); + + PDEBUG(5, "0x%02X:0x%02X", reg, value); + + return value; +} + +/* NOTE: Do not call this function directly! + * returns: negative is error, pos or zero is data */ +static int +ov511_i2c_read_internal(struct usb_ov511 *ov, unsigned char reg) +{ + int rc, value, retries; + + /* Two byte write cycle */ + for (retries = OV511_I2C_RETRIES; ; ) { + /* Select camera register */ + rc = reg_w(ov, R51x_I2C_SADDR_2, reg); + if (rc < 0) + return rc; + + /* Initiate 2-byte write cycle */ + rc = reg_w(ov, R511_I2C_CTL, 0x03); + if (rc < 0) + return rc; + + /* Retry until idle */ + do + rc = reg_r(ov, R511_I2C_CTL); + while (rc > 0 && ((rc&1) == 0)); + if (rc < 0) + return rc; + + if ((rc&2) == 0) /* Ack? */ + break; + + /* I2C abort */ + reg_w(ov, R511_I2C_CTL, 0x10); + + if (--retries < 0) { + err("i2c write retries exhausted"); + return -1; + } + } + + /* Two byte read cycle */ + for (retries = OV511_I2C_RETRIES; ; ) { + /* Initiate 2-byte read cycle */ + rc = reg_w(ov, R511_I2C_CTL, 0x05); + if (rc < 0) + return rc; + + /* Retry until idle */ + do + rc = reg_r(ov, R511_I2C_CTL); + while (rc > 0 && ((rc&1) == 0)); + if (rc < 0) + return rc; + + if ((rc&2) == 0) /* Ack? */ + break; + + /* I2C abort */ + rc = reg_w(ov, R511_I2C_CTL, 0x10); + if (rc < 0) + return rc; + + if (--retries < 0) { + err("i2c read retries exhausted"); + return -1; + } + } + + value = reg_r(ov, R51x_I2C_DATA); + + PDEBUG(5, "0x%02X:0x%02X", reg, value); + + /* This is needed to make i2c_w() work */ + rc = reg_w(ov, R511_I2C_CTL, 0x05); + if (rc < 0) + return rc; + + return value; +} + +/* returns: negative is error, pos or zero is data */ +static int +i2c_r(struct usb_ov511 *ov, unsigned char reg) +{ + int rc; + + mutex_lock(&ov->i2c_lock); + + if (ov->bclass == BCL_OV518) + rc = ov518_i2c_read_internal(ov, reg); + else + rc = ov511_i2c_read_internal(ov, reg); + + mutex_unlock(&ov->i2c_lock); + + return rc; +} + +static int +i2c_w(struct usb_ov511 *ov, unsigned char reg, unsigned char value) +{ + int rc; + + mutex_lock(&ov->i2c_lock); + + if (ov->bclass == BCL_OV518) + rc = ov518_i2c_write_internal(ov, reg, value); + else + rc = ov511_i2c_write_internal(ov, reg, value); + + mutex_unlock(&ov->i2c_lock); + + return rc; +} + +/* Do not call this function directly! */ +static int +ov51x_i2c_write_mask_internal(struct usb_ov511 *ov, + unsigned char reg, + unsigned char value, + unsigned char mask) +{ + int rc; + unsigned char oldval, newval; + + if (mask == 0xff) { + newval = value; + } else { + if (ov->bclass == BCL_OV518) + rc = ov518_i2c_read_internal(ov, reg); + else + rc = ov511_i2c_read_internal(ov, reg); + if (rc < 0) + return rc; + + oldval = (unsigned char) rc; + oldval &= (~mask); /* Clear the masked bits */ + value &= mask; /* Enforce mask on value */ + newval = oldval | value; /* Set the desired bits */ + } + + if (ov->bclass == BCL_OV518) + return (ov518_i2c_write_internal(ov, reg, newval)); + else + return (ov511_i2c_write_internal(ov, reg, newval)); +} + +/* Writes bits at positions specified by mask to an I2C reg. Bits that are in + * the same position as 1's in "mask" are cleared and set to "value". Bits + * that are in the same position as 0's in "mask" are preserved, regardless + * of their respective state in "value". + */ +static int +i2c_w_mask(struct usb_ov511 *ov, + unsigned char reg, + unsigned char value, + unsigned char mask) +{ + int rc; + + mutex_lock(&ov->i2c_lock); + rc = ov51x_i2c_write_mask_internal(ov, reg, value, mask); + mutex_unlock(&ov->i2c_lock); + + return rc; +} + +/* Set the read and write slave IDs. The "slave" argument is the write slave, + * and the read slave will be set to (slave + 1). ov->i2c_lock should be held + * when calling this. This should not be called from outside the i2c I/O + * functions. + */ +static int +i2c_set_slave_internal(struct usb_ov511 *ov, unsigned char slave) +{ + int rc; + + rc = reg_w(ov, R51x_I2C_W_SID, slave); + if (rc < 0) + return rc; + + rc = reg_w(ov, R51x_I2C_R_SID, slave + 1); + if (rc < 0) + return rc; + + return 0; +} + +/* Write to a specific I2C slave ID and register, using the specified mask */ +static int +i2c_w_slave(struct usb_ov511 *ov, + unsigned char slave, + unsigned char reg, + unsigned char value, + unsigned char mask) +{ + int rc = 0; + + mutex_lock(&ov->i2c_lock); + + /* Set new slave IDs */ + rc = i2c_set_slave_internal(ov, slave); + if (rc < 0) + goto out; + + rc = ov51x_i2c_write_mask_internal(ov, reg, value, mask); + +out: + /* Restore primary IDs */ + if (i2c_set_slave_internal(ov, ov->primary_i2c_slave) < 0) + err("Couldn't restore primary I2C slave"); + + mutex_unlock(&ov->i2c_lock); + return rc; +} + +/* Read from a specific I2C slave ID and register */ +static int +i2c_r_slave(struct usb_ov511 *ov, + unsigned char slave, + unsigned char reg) +{ + int rc; + + mutex_lock(&ov->i2c_lock); + + /* Set new slave IDs */ + rc = i2c_set_slave_internal(ov, slave); + if (rc < 0) + goto out; + + if (ov->bclass == BCL_OV518) + rc = ov518_i2c_read_internal(ov, reg); + else + rc = ov511_i2c_read_internal(ov, reg); + +out: + /* Restore primary IDs */ + if (i2c_set_slave_internal(ov, ov->primary_i2c_slave) < 0) + err("Couldn't restore primary I2C slave"); + + mutex_unlock(&ov->i2c_lock); + return rc; +} + +/* Sets I2C read and write slave IDs. Returns <0 for error */ +static int +ov51x_set_slave_ids(struct usb_ov511 *ov, unsigned char sid) +{ + int rc; + + mutex_lock(&ov->i2c_lock); + + rc = i2c_set_slave_internal(ov, sid); + if (rc < 0) + goto out; + + // FIXME: Is this actually necessary? + rc = ov51x_reset(ov, OV511_RESET_NOREGS); +out: + mutex_unlock(&ov->i2c_lock); + return rc; +} + +static int +write_regvals(struct usb_ov511 *ov, struct ov511_regvals * pRegvals) +{ + int rc; + + while (pRegvals->bus != OV511_DONE_BUS) { + if (pRegvals->bus == OV511_REG_BUS) { + if ((rc = reg_w(ov, pRegvals->reg, pRegvals->val)) < 0) + return rc; + } else if (pRegvals->bus == OV511_I2C_BUS) { + if ((rc = i2c_w(ov, pRegvals->reg, pRegvals->val)) < 0) + return rc; + } else { + err("Bad regval array"); + return -1; + } + pRegvals++; + } + return 0; +} + +#ifdef OV511_DEBUG +static void +dump_i2c_range(struct usb_ov511 *ov, int reg1, int regn) +{ + int i, rc; + + for (i = reg1; i <= regn; i++) { + rc = i2c_r(ov, i); + info("Sensor[0x%02X] = 0x%02X", i, rc); + } +} + +static void +dump_i2c_regs(struct usb_ov511 *ov) +{ + info("I2C REGS"); + dump_i2c_range(ov, 0x00, 0x7C); +} + +static void +dump_reg_range(struct usb_ov511 *ov, int reg1, int regn) +{ + int i, rc; + + for (i = reg1; i <= regn; i++) { + rc = reg_r(ov, i); + info("OV511[0x%02X] = 0x%02X", i, rc); + } +} + +static void +ov511_dump_regs(struct usb_ov511 *ov) +{ + info("CAMERA INTERFACE REGS"); + dump_reg_range(ov, 0x10, 0x1f); + info("DRAM INTERFACE REGS"); + dump_reg_range(ov, 0x20, 0x23); + info("ISO FIFO REGS"); + dump_reg_range(ov, 0x30, 0x31); + info("PIO REGS"); + dump_reg_range(ov, 0x38, 0x39); + dump_reg_range(ov, 0x3e, 0x3e); + info("I2C REGS"); + dump_reg_range(ov, 0x40, 0x49); + info("SYSTEM CONTROL REGS"); + dump_reg_range(ov, 0x50, 0x55); + dump_reg_range(ov, 0x5e, 0x5f); + info("OmniCE REGS"); + dump_reg_range(ov, 0x70, 0x79); + /* NOTE: Quantization tables are not readable. You will get the value + * in reg. 0x79 for every table register */ + dump_reg_range(ov, 0x80, 0x9f); + dump_reg_range(ov, 0xa0, 0xbf); + +} + +static void +ov518_dump_regs(struct usb_ov511 *ov) +{ + info("VIDEO MODE REGS"); + dump_reg_range(ov, 0x20, 0x2f); + info("DATA PUMP AND SNAPSHOT REGS"); + dump_reg_range(ov, 0x30, 0x3f); + info("I2C REGS"); + dump_reg_range(ov, 0x40, 0x4f); + info("SYSTEM CONTROL AND VENDOR REGS"); + dump_reg_range(ov, 0x50, 0x5f); + info("60 - 6F"); + dump_reg_range(ov, 0x60, 0x6f); + info("70 - 7F"); + dump_reg_range(ov, 0x70, 0x7f); + info("Y QUANTIZATION TABLE"); + dump_reg_range(ov, 0x80, 0x8f); + info("UV QUANTIZATION TABLE"); + dump_reg_range(ov, 0x90, 0x9f); + info("A0 - BF"); + dump_reg_range(ov, 0xa0, 0xbf); + info("CBR"); + dump_reg_range(ov, 0xc0, 0xcf); +} +#endif + +/*****************************************************************************/ + +/* Temporarily stops OV511 from functioning. Must do this before changing + * registers while the camera is streaming */ +static inline int +ov51x_stop(struct usb_ov511 *ov) +{ + PDEBUG(4, "stopping"); + ov->stopped = 1; + if (ov->bclass == BCL_OV518) + return (reg_w_mask(ov, R51x_SYS_RESET, 0x3a, 0x3a)); + else + return (reg_w(ov, R51x_SYS_RESET, 0x3d)); +} + +/* Restarts OV511 after ov511_stop() is called. Has no effect if it is not + * actually stopped (for performance). */ +static inline int +ov51x_restart(struct usb_ov511 *ov) +{ + if (ov->stopped) { + PDEBUG(4, "restarting"); + ov->stopped = 0; + + /* Reinitialize the stream */ + if (ov->bclass == BCL_OV518) + reg_w(ov, 0x2f, 0x80); + + return (reg_w(ov, R51x_SYS_RESET, 0x00)); + } + + return 0; +} + +/* Sleeps until no frames are active. Returns !0 if got signal */ +static int +ov51x_wait_frames_inactive(struct usb_ov511 *ov) +{ + return wait_event_interruptible(ov->wq, ov->curframe < 0); +} + +/* Resets the hardware snapshot button */ +static void +ov51x_clear_snapshot(struct usb_ov511 *ov) +{ + if (ov->bclass == BCL_OV511) { + reg_w(ov, R51x_SYS_SNAP, 0x00); + reg_w(ov, R51x_SYS_SNAP, 0x02); + reg_w(ov, R51x_SYS_SNAP, 0x00); + } else if (ov->bclass == BCL_OV518) { + warn("snapshot reset not supported yet on OV518(+)"); + } else { + err("clear snap: invalid bridge type"); + } +} + +#if 0 +/* Checks the status of the snapshot button. Returns 1 if it was pressed since + * it was last cleared, and zero in all other cases (including errors) */ +static int +ov51x_check_snapshot(struct usb_ov511 *ov) +{ + int ret, status = 0; + + if (ov->bclass == BCL_OV511) { + ret = reg_r(ov, R51x_SYS_SNAP); + if (ret < 0) { + err("Error checking snspshot status (%d)", ret); + } else if (ret & 0x08) { + status = 1; + } + } else if (ov->bclass == BCL_OV518) { + warn("snapshot check not supported yet on OV518(+)"); + } else { + err("check snap: invalid bridge type"); + } + + return status; +} +#endif + +/* This does an initial reset of an OmniVision sensor and ensures that I2C + * is synchronized. Returns <0 for failure. + */ +static int +init_ov_sensor(struct usb_ov511 *ov) +{ + int i, success; + + /* Reset the sensor */ + if (i2c_w(ov, 0x12, 0x80) < 0) + return -EIO; + + /* Wait for it to initialize */ + msleep(150); + + for (i = 0, success = 0; i < i2c_detect_tries && !success; i++) { + if ((i2c_r(ov, OV7610_REG_ID_HIGH) == 0x7F) && + (i2c_r(ov, OV7610_REG_ID_LOW) == 0xA2)) { + success = 1; + continue; + } + + /* Reset the sensor */ + if (i2c_w(ov, 0x12, 0x80) < 0) + return -EIO; + /* Wait for it to initialize */ + msleep(150); + /* Dummy read to sync I2C */ + if (i2c_r(ov, 0x00) < 0) + return -EIO; + } + + if (!success) + return -EIO; + + PDEBUG(1, "I2C synced in %d attempt(s)", i); + + return 0; +} + +static int +ov511_set_packet_size(struct usb_ov511 *ov, int size) +{ + int alt, mult; + + if (ov51x_stop(ov) < 0) + return -EIO; + + mult = size >> 5; + + if (ov->bridge == BRG_OV511) { + if (size == 0) + alt = OV511_ALT_SIZE_0; + else if (size == 257) + alt = OV511_ALT_SIZE_257; + else if (size == 513) + alt = OV511_ALT_SIZE_513; + else if (size == 769) + alt = OV511_ALT_SIZE_769; + else if (size == 993) + alt = OV511_ALT_SIZE_993; + else { + err("Set packet size: invalid size (%d)", size); + return -EINVAL; + } + } else if (ov->bridge == BRG_OV511PLUS) { + if (size == 0) + alt = OV511PLUS_ALT_SIZE_0; + else if (size == 33) + alt = OV511PLUS_ALT_SIZE_33; + else if (size == 129) + alt = OV511PLUS_ALT_SIZE_129; + else if (size == 257) + alt = OV511PLUS_ALT_SIZE_257; + else if (size == 385) + alt = OV511PLUS_ALT_SIZE_385; + else if (size == 513) + alt = OV511PLUS_ALT_SIZE_513; + else if (size == 769) + alt = OV511PLUS_ALT_SIZE_769; + else if (size == 961) + alt = OV511PLUS_ALT_SIZE_961; + else { + err("Set packet size: invalid size (%d)", size); + return -EINVAL; + } + } else { + err("Set packet size: Invalid bridge type"); + return -EINVAL; + } + + PDEBUG(3, "%d, mult=%d, alt=%d", size, mult, alt); + + if (reg_w(ov, R51x_FIFO_PSIZE, mult) < 0) + return -EIO; + + if (usb_set_interface(ov->dev, ov->iface, alt) < 0) { + err("Set packet size: set interface error"); + return -EBUSY; + } + + if (ov51x_reset(ov, OV511_RESET_NOREGS) < 0) + return -EIO; + + ov->packet_size = size; + + if (ov51x_restart(ov) < 0) + return -EIO; + + return 0; +} + +/* Note: Unlike the OV511/OV511+, the size argument does NOT include the + * optional packet number byte. The actual size *is* stored in ov->packet_size, + * though. */ +static int +ov518_set_packet_size(struct usb_ov511 *ov, int size) +{ + int alt; + + if (ov51x_stop(ov) < 0) + return -EIO; + + if (ov->bclass == BCL_OV518) { + if (size == 0) + alt = OV518_ALT_SIZE_0; + else if (size == 128) + alt = OV518_ALT_SIZE_128; + else if (size == 256) + alt = OV518_ALT_SIZE_256; + else if (size == 384) + alt = OV518_ALT_SIZE_384; + else if (size == 512) + alt = OV518_ALT_SIZE_512; + else if (size == 640) + alt = OV518_ALT_SIZE_640; + else if (size == 768) + alt = OV518_ALT_SIZE_768; + else if (size == 896) + alt = OV518_ALT_SIZE_896; + else { + err("Set packet size: invalid size (%d)", size); + return -EINVAL; + } + } else { + err("Set packet size: Invalid bridge type"); + return -EINVAL; + } + + PDEBUG(3, "%d, alt=%d", size, alt); + + ov->packet_size = size; + if (size > 0) { + /* Program ISO FIFO size reg (packet number isn't included) */ + ov518_reg_w32(ov, 0x30, size, 2); + + if (ov->packet_numbering) + ++ov->packet_size; + } + + if (usb_set_interface(ov->dev, ov->iface, alt) < 0) { + err("Set packet size: set interface error"); + return -EBUSY; + } + + /* Initialize the stream */ + if (reg_w(ov, 0x2f, 0x80) < 0) + return -EIO; + + if (ov51x_restart(ov) < 0) + return -EIO; + + if (ov51x_reset(ov, OV511_RESET_NOREGS) < 0) + return -EIO; + + return 0; +} + +/* Upload compression params and quantization tables. Returns 0 for success. */ +static int +ov511_init_compression(struct usb_ov511 *ov) +{ + int rc = 0; + + if (!ov->compress_inited) { + reg_w(ov, 0x70, phy); + reg_w(ov, 0x71, phuv); + reg_w(ov, 0x72, pvy); + reg_w(ov, 0x73, pvuv); + reg_w(ov, 0x74, qhy); + reg_w(ov, 0x75, qhuv); + reg_w(ov, 0x76, qvy); + reg_w(ov, 0x77, qvuv); + + if (ov511_upload_quan_tables(ov) < 0) { + err("Error uploading quantization tables"); + rc = -EIO; + goto out; + } + } + + ov->compress_inited = 1; +out: + return rc; +} + +/* Upload compression params and quantization tables. Returns 0 for success. */ +static int +ov518_init_compression(struct usb_ov511 *ov) +{ + int rc = 0; + + if (!ov->compress_inited) { + if (ov518_upload_quan_tables(ov) < 0) { + err("Error uploading quantization tables"); + rc = -EIO; + goto out; + } + } + + ov->compress_inited = 1; +out: + return rc; +} + +/* -------------------------------------------------------------------------- */ + +/* Sets sensor's contrast setting to "val" */ +static int +sensor_set_contrast(struct usb_ov511 *ov, unsigned short val) +{ + int rc; + + PDEBUG(3, "%d", val); + + if (ov->stop_during_set) + if (ov51x_stop(ov) < 0) + return -EIO; + + switch (ov->sensor) { + case SEN_OV7610: + case SEN_OV6620: + { + rc = i2c_w(ov, OV7610_REG_CNT, val >> 8); + if (rc < 0) + goto out; + break; + } + case SEN_OV6630: + { + rc = i2c_w_mask(ov, OV7610_REG_CNT, val >> 12, 0x0f); + if (rc < 0) + goto out; + break; + } + case SEN_OV7620: + { + unsigned char ctab[] = { + 0x01, 0x05, 0x09, 0x11, 0x15, 0x35, 0x37, 0x57, + 0x5b, 0xa5, 0xa7, 0xc7, 0xc9, 0xcf, 0xef, 0xff + }; + + /* Use Y gamma control instead. Bit 0 enables it. */ + rc = i2c_w(ov, 0x64, ctab[val>>12]); + if (rc < 0) + goto out; + break; + } + case SEN_SAA7111A: + { + rc = i2c_w(ov, 0x0b, val >> 9); + if (rc < 0) + goto out; + break; + } + default: + { + PDEBUG(3, "Unsupported with this sensor"); + rc = -EPERM; + goto out; + } + } + + rc = 0; /* Success */ + ov->contrast = val; +out: + if (ov51x_restart(ov) < 0) + return -EIO; + + return rc; +} + +/* Gets sensor's contrast setting */ +static int +sensor_get_contrast(struct usb_ov511 *ov, unsigned short *val) +{ + int rc; + + switch (ov->sensor) { + case SEN_OV7610: + case SEN_OV6620: + rc = i2c_r(ov, OV7610_REG_CNT); + if (rc < 0) + return rc; + else + *val = rc << 8; + break; + case SEN_OV6630: + rc = i2c_r(ov, OV7610_REG_CNT); + if (rc < 0) + return rc; + else + *val = rc << 12; + break; + case SEN_OV7620: + /* Use Y gamma reg instead. Bit 0 is the enable bit. */ + rc = i2c_r(ov, 0x64); + if (rc < 0) + return rc; + else + *val = (rc & 0xfe) << 8; + break; + case SEN_SAA7111A: + *val = ov->contrast; + break; + default: + PDEBUG(3, "Unsupported with this sensor"); + return -EPERM; + } + + PDEBUG(3, "%d", *val); + ov->contrast = *val; + + return 0; +} + +/* -------------------------------------------------------------------------- */ + +/* Sets sensor's brightness setting to "val" */ +static int +sensor_set_brightness(struct usb_ov511 *ov, unsigned short val) +{ + int rc; + + PDEBUG(4, "%d", val); + + if (ov->stop_during_set) + if (ov51x_stop(ov) < 0) + return -EIO; + + switch (ov->sensor) { + case SEN_OV7610: + case SEN_OV76BE: + case SEN_OV6620: + case SEN_OV6630: + rc = i2c_w(ov, OV7610_REG_BRT, val >> 8); + if (rc < 0) + goto out; + break; + case SEN_OV7620: + /* 7620 doesn't like manual changes when in auto mode */ + if (!ov->auto_brt) { + rc = i2c_w(ov, OV7610_REG_BRT, val >> 8); + if (rc < 0) + goto out; + } + break; + case SEN_SAA7111A: + rc = i2c_w(ov, 0x0a, val >> 8); + if (rc < 0) + goto out; + break; + default: + PDEBUG(3, "Unsupported with this sensor"); + rc = -EPERM; + goto out; + } + + rc = 0; /* Success */ + ov->brightness = val; +out: + if (ov51x_restart(ov) < 0) + return -EIO; + + return rc; +} + +/* Gets sensor's brightness setting */ +static int +sensor_get_brightness(struct usb_ov511 *ov, unsigned short *val) +{ + int rc; + + switch (ov->sensor) { + case SEN_OV7610: + case SEN_OV76BE: + case SEN_OV7620: + case SEN_OV6620: + case SEN_OV6630: + rc = i2c_r(ov, OV7610_REG_BRT); + if (rc < 0) + return rc; + else + *val = rc << 8; + break; + case SEN_SAA7111A: + *val = ov->brightness; + break; + default: + PDEBUG(3, "Unsupported with this sensor"); + return -EPERM; + } + + PDEBUG(3, "%d", *val); + ov->brightness = *val; + + return 0; +} + +/* -------------------------------------------------------------------------- */ + +/* Sets sensor's saturation (color intensity) setting to "val" */ +static int +sensor_set_saturation(struct usb_ov511 *ov, unsigned short val) +{ + int rc; + + PDEBUG(3, "%d", val); + + if (ov->stop_during_set) + if (ov51x_stop(ov) < 0) + return -EIO; + + switch (ov->sensor) { + case SEN_OV7610: + case SEN_OV76BE: + case SEN_OV6620: + case SEN_OV6630: + rc = i2c_w(ov, OV7610_REG_SAT, val >> 8); + if (rc < 0) + goto out; + break; + case SEN_OV7620: +// /* Use UV gamma control instead. Bits 0 & 7 are reserved. */ +// rc = ov_i2c_write(ov->dev, 0x62, (val >> 9) & 0x7e); +// if (rc < 0) +// goto out; + rc = i2c_w(ov, OV7610_REG_SAT, val >> 8); + if (rc < 0) + goto out; + break; + case SEN_SAA7111A: + rc = i2c_w(ov, 0x0c, val >> 9); + if (rc < 0) + goto out; + break; + default: + PDEBUG(3, "Unsupported with this sensor"); + rc = -EPERM; + goto out; + } + + rc = 0; /* Success */ + ov->colour = val; +out: + if (ov51x_restart(ov) < 0) + return -EIO; + + return rc; +} + +/* Gets sensor's saturation (color intensity) setting */ +static int +sensor_get_saturation(struct usb_ov511 *ov, unsigned short *val) +{ + int rc; + + switch (ov->sensor) { + case SEN_OV7610: + case SEN_OV76BE: + case SEN_OV6620: + case SEN_OV6630: + rc = i2c_r(ov, OV7610_REG_SAT); + if (rc < 0) + return rc; + else + *val = rc << 8; + break; + case SEN_OV7620: +// /* Use UV gamma reg instead. Bits 0 & 7 are reserved. */ +// rc = i2c_r(ov, 0x62); +// if (rc < 0) +// return rc; +// else +// *val = (rc & 0x7e) << 9; + rc = i2c_r(ov, OV7610_REG_SAT); + if (rc < 0) + return rc; + else + *val = rc << 8; + break; + case SEN_SAA7111A: + *val = ov->colour; + break; + default: + PDEBUG(3, "Unsupported with this sensor"); + return -EPERM; + } + + PDEBUG(3, "%d", *val); + ov->colour = *val; + + return 0; +} + +/* -------------------------------------------------------------------------- */ + +/* Sets sensor's hue (red/blue balance) setting to "val" */ +static int +sensor_set_hue(struct usb_ov511 *ov, unsigned short val) +{ + int rc; + + PDEBUG(3, "%d", val); + + if (ov->stop_during_set) + if (ov51x_stop(ov) < 0) + return -EIO; + + switch (ov->sensor) { + case SEN_OV7610: + case SEN_OV6620: + case SEN_OV6630: + rc = i2c_w(ov, OV7610_REG_RED, 0xFF - (val >> 8)); + if (rc < 0) + goto out; + + rc = i2c_w(ov, OV7610_REG_BLUE, val >> 8); + if (rc < 0) + goto out; + break; + case SEN_OV7620: +// Hue control is causing problems. I will enable it once it's fixed. +#if 0 + rc = i2c_w(ov, 0x7a, (unsigned char)(val >> 8) + 0xb); + if (rc < 0) + goto out; + + rc = i2c_w(ov, 0x79, (unsigned char)(val >> 8) + 0xb); + if (rc < 0) + goto out; +#endif + break; + case SEN_SAA7111A: + rc = i2c_w(ov, 0x0d, (val + 32768) >> 8); + if (rc < 0) + goto out; + break; + default: + PDEBUG(3, "Unsupported with this sensor"); + rc = -EPERM; + goto out; + } + + rc = 0; /* Success */ + ov->hue = val; +out: + if (ov51x_restart(ov) < 0) + return -EIO; + + return rc; +} + +/* Gets sensor's hue (red/blue balance) setting */ +static int +sensor_get_hue(struct usb_ov511 *ov, unsigned short *val) +{ + int rc; + + switch (ov->sensor) { + case SEN_OV7610: + case SEN_OV6620: + case SEN_OV6630: + rc = i2c_r(ov, OV7610_REG_BLUE); + if (rc < 0) + return rc; + else + *val = rc << 8; + break; + case SEN_OV7620: + rc = i2c_r(ov, 0x7a); + if (rc < 0) + return rc; + else + *val = rc << 8; + break; + case SEN_SAA7111A: + *val = ov->hue; + break; + default: + PDEBUG(3, "Unsupported with this sensor"); + return -EPERM; + } + + PDEBUG(3, "%d", *val); + ov->hue = *val; + + return 0; +} + +/* -------------------------------------------------------------------------- */ + +static int +sensor_set_picture(struct usb_ov511 *ov, struct video_picture *p) +{ + int rc; + + PDEBUG(4, "sensor_set_picture"); + + ov->whiteness = p->whiteness; + + /* Don't return error if a setting is unsupported, or rest of settings + * will not be performed */ + + rc = sensor_set_contrast(ov, p->contrast); + if (FATAL_ERROR(rc)) + return rc; + + rc = sensor_set_brightness(ov, p->brightness); + if (FATAL_ERROR(rc)) + return rc; + + rc = sensor_set_saturation(ov, p->colour); + if (FATAL_ERROR(rc)) + return rc; + + rc = sensor_set_hue(ov, p->hue); + if (FATAL_ERROR(rc)) + return rc; + + return 0; +} + +static int +sensor_get_picture(struct usb_ov511 *ov, struct video_picture *p) +{ + int rc; + + PDEBUG(4, "sensor_get_picture"); + + /* Don't return error if a setting is unsupported, or rest of settings + * will not be performed */ + + rc = sensor_get_contrast(ov, &(p->contrast)); + if (FATAL_ERROR(rc)) + return rc; + + rc = sensor_get_brightness(ov, &(p->brightness)); + if (FATAL_ERROR(rc)) + return rc; + + rc = sensor_get_saturation(ov, &(p->colour)); + if (FATAL_ERROR(rc)) + return rc; + + rc = sensor_get_hue(ov, &(p->hue)); + if (FATAL_ERROR(rc)) + return rc; + + p->whiteness = 105 << 8; + + return 0; +} + +#if 0 +// FIXME: Exposure range is only 0x00-0x7f in interlace mode +/* Sets current exposure for sensor. This only has an effect if auto-exposure + * is off */ +static inline int +sensor_set_exposure(struct usb_ov511 *ov, unsigned char val) +{ + int rc; + + PDEBUG(3, "%d", val); + + if (ov->stop_during_set) + if (ov51x_stop(ov) < 0) + return -EIO; + + switch (ov->sensor) { + case SEN_OV6620: + case SEN_OV6630: + case SEN_OV7610: + case SEN_OV7620: + case SEN_OV76BE: + case SEN_OV8600: + rc = i2c_w(ov, 0x10, val); + if (rc < 0) + goto out; + + break; + case SEN_KS0127: + case SEN_KS0127B: + case SEN_SAA7111A: + PDEBUG(3, "Unsupported with this sensor"); + return -EPERM; + default: + err("Sensor not supported for set_exposure"); + return -EINVAL; + } + + rc = 0; /* Success */ + ov->exposure = val; +out: + if (ov51x_restart(ov) < 0) + return -EIO; + + return rc; +} +#endif + +/* Gets current exposure level from sensor, regardless of whether it is under + * manual control. */ +static int +sensor_get_exposure(struct usb_ov511 *ov, unsigned char *val) +{ + int rc; + + switch (ov->sensor) { + case SEN_OV7610: + case SEN_OV6620: + case SEN_OV6630: + case SEN_OV7620: + case SEN_OV76BE: + case SEN_OV8600: + rc = i2c_r(ov, 0x10); + if (rc < 0) + return rc; + else + *val = rc; + break; + case SEN_KS0127: + case SEN_KS0127B: + case SEN_SAA7111A: + val = NULL; + PDEBUG(3, "Unsupported with this sensor"); + return -EPERM; + default: + err("Sensor not supported for get_exposure"); + return -EINVAL; + } + + PDEBUG(3, "%d", *val); + ov->exposure = *val; + + return 0; +} + +/* Turns on or off the LED. Only has an effect with OV511+/OV518(+) */ +static void +ov51x_led_control(struct usb_ov511 *ov, int enable) +{ + PDEBUG(4, " (%s)", enable ? "turn on" : "turn off"); + + if (ov->bridge == BRG_OV511PLUS) + reg_w(ov, R511_SYS_LED_CTL, enable ? 1 : 0); + else if (ov->bclass == BCL_OV518) + reg_w_mask(ov, R518_GPIO_OUT, enable ? 0x02 : 0x00, 0x02); + + return; +} + +/* Matches the sensor's internal frame rate to the lighting frequency. + * Valid frequencies are: + * 50 - 50Hz, for European and Asian lighting + * 60 - 60Hz, for American lighting + * + * Tested with: OV7610, OV7620, OV76BE, OV6620 + * Unsupported: KS0127, KS0127B, SAA7111A + * Returns: 0 for success + */ +static int +sensor_set_light_freq(struct usb_ov511 *ov, int freq) +{ + int sixty; + + PDEBUG(4, "%d Hz", freq); + + if (freq == 60) + sixty = 1; + else if (freq == 50) + sixty = 0; + else { + err("Invalid light freq (%d Hz)", freq); + return -EINVAL; + } + + switch (ov->sensor) { + case SEN_OV7610: + i2c_w_mask(ov, 0x2a, sixty?0x00:0x80, 0x80); + i2c_w(ov, 0x2b, sixty?0x00:0xac); + i2c_w_mask(ov, 0x13, 0x10, 0x10); + i2c_w_mask(ov, 0x13, 0x00, 0x10); + break; + case SEN_OV7620: + case SEN_OV76BE: + case SEN_OV8600: + i2c_w_mask(ov, 0x2a, sixty?0x00:0x80, 0x80); + i2c_w(ov, 0x2b, sixty?0x00:0xac); + i2c_w_mask(ov, 0x76, 0x01, 0x01); + break; + case SEN_OV6620: + case SEN_OV6630: + i2c_w(ov, 0x2b, sixty?0xa8:0x28); + i2c_w(ov, 0x2a, sixty?0x84:0xa4); + break; + case SEN_KS0127: + case SEN_KS0127B: + case SEN_SAA7111A: + PDEBUG(5, "Unsupported with this sensor"); + return -EPERM; + default: + err("Sensor not supported for set_light_freq"); + return -EINVAL; + } + + ov->lightfreq = freq; + + return 0; +} + +/* If enable is true, turn on the sensor's banding filter, otherwise turn it + * off. This filter tries to reduce the pattern of horizontal light/dark bands + * caused by some (usually fluorescent) lighting. The light frequency must be + * set either before or after enabling it with ov51x_set_light_freq(). + * + * Tested with: OV7610, OV7620, OV76BE, OV6620. + * Unsupported: KS0127, KS0127B, SAA7111A + * Returns: 0 for success + */ +static int +sensor_set_banding_filter(struct usb_ov511 *ov, int enable) +{ + int rc; + + PDEBUG(4, " (%s)", enable ? "turn on" : "turn off"); + + if (ov->sensor == SEN_KS0127 || ov->sensor == SEN_KS0127B + || ov->sensor == SEN_SAA7111A) { + PDEBUG(5, "Unsupported with this sensor"); + return -EPERM; + } + + rc = i2c_w_mask(ov, 0x2d, enable?0x04:0x00, 0x04); + if (rc < 0) + return rc; + + ov->bandfilt = enable; + + return 0; +} + +/* If enable is true, turn on the sensor's auto brightness control, otherwise + * turn it off. + * + * Unsupported: KS0127, KS0127B, SAA7111A + * Returns: 0 for success + */ +static int +sensor_set_auto_brightness(struct usb_ov511 *ov, int enable) +{ + int rc; + + PDEBUG(4, " (%s)", enable ? "turn on" : "turn off"); + + if (ov->sensor == SEN_KS0127 || ov->sensor == SEN_KS0127B + || ov->sensor == SEN_SAA7111A) { + PDEBUG(5, "Unsupported with this sensor"); + return -EPERM; + } + + rc = i2c_w_mask(ov, 0x2d, enable?0x10:0x00, 0x10); + if (rc < 0) + return rc; + + ov->auto_brt = enable; + + return 0; +} + +/* If enable is true, turn on the sensor's auto exposure control, otherwise + * turn it off. + * + * Unsupported: KS0127, KS0127B, SAA7111A + * Returns: 0 for success + */ +static int +sensor_set_auto_exposure(struct usb_ov511 *ov, int enable) +{ + PDEBUG(4, " (%s)", enable ? "turn on" : "turn off"); + + switch (ov->sensor) { + case SEN_OV7610: + i2c_w_mask(ov, 0x29, enable?0x00:0x80, 0x80); + break; + case SEN_OV6620: + case SEN_OV7620: + case SEN_OV76BE: + case SEN_OV8600: + i2c_w_mask(ov, 0x13, enable?0x01:0x00, 0x01); + break; + case SEN_OV6630: + i2c_w_mask(ov, 0x28, enable?0x00:0x10, 0x10); + break; + case SEN_KS0127: + case SEN_KS0127B: + case SEN_SAA7111A: + PDEBUG(5, "Unsupported with this sensor"); + return -EPERM; + default: + err("Sensor not supported for set_auto_exposure"); + return -EINVAL; + } + + ov->auto_exp = enable; + + return 0; +} + +/* Modifies the sensor's exposure algorithm to allow proper exposure of objects + * that are illuminated from behind. + * + * Tested with: OV6620, OV7620 + * Unsupported: OV7610, OV76BE, KS0127, KS0127B, SAA7111A + * Returns: 0 for success + */ +static int +sensor_set_backlight(struct usb_ov511 *ov, int enable) +{ + PDEBUG(4, " (%s)", enable ? "turn on" : "turn off"); + + switch (ov->sensor) { + case SEN_OV7620: + case SEN_OV8600: + i2c_w_mask(ov, 0x68, enable?0xe0:0xc0, 0xe0); + i2c_w_mask(ov, 0x29, enable?0x08:0x00, 0x08); + i2c_w_mask(ov, 0x28, enable?0x02:0x00, 0x02); + break; + case SEN_OV6620: + i2c_w_mask(ov, 0x4e, enable?0xe0:0xc0, 0xe0); + i2c_w_mask(ov, 0x29, enable?0x08:0x00, 0x08); + i2c_w_mask(ov, 0x0e, enable?0x80:0x00, 0x80); + break; + case SEN_OV6630: + i2c_w_mask(ov, 0x4e, enable?0x80:0x60, 0xe0); + i2c_w_mask(ov, 0x29, enable?0x08:0x00, 0x08); + i2c_w_mask(ov, 0x28, enable?0x02:0x00, 0x02); + break; + case SEN_OV7610: + case SEN_OV76BE: + case SEN_KS0127: + case SEN_KS0127B: + case SEN_SAA7111A: + PDEBUG(5, "Unsupported with this sensor"); + return -EPERM; + default: + err("Sensor not supported for set_backlight"); + return -EINVAL; + } + + ov->backlight = enable; + + return 0; +} + +static int +sensor_set_mirror(struct usb_ov511 *ov, int enable) +{ + PDEBUG(4, " (%s)", enable ? "turn on" : "turn off"); + + switch (ov->sensor) { + case SEN_OV6620: + case SEN_OV6630: + case SEN_OV7610: + case SEN_OV7620: + case SEN_OV76BE: + case SEN_OV8600: + i2c_w_mask(ov, 0x12, enable?0x40:0x00, 0x40); + break; + case SEN_KS0127: + case SEN_KS0127B: + case SEN_SAA7111A: + PDEBUG(5, "Unsupported with this sensor"); + return -EPERM; + default: + err("Sensor not supported for set_mirror"); + return -EINVAL; + } + + ov->mirror = enable; + + return 0; +} + +/* Returns number of bits per pixel (regardless of where they are located; + * planar or not), or zero for unsupported format. + */ +static inline int +get_depth(int palette) +{ + switch (palette) { + case VIDEO_PALETTE_GREY: return 8; + case VIDEO_PALETTE_YUV420: return 12; + case VIDEO_PALETTE_YUV420P: return 12; /* Planar */ + default: return 0; /* Invalid format */ + } +} + +/* Bytes per frame. Used by read(). Return of 0 indicates error */ +static inline long int +get_frame_length(struct ov511_frame *frame) +{ + if (!frame) + return 0; + else + return ((frame->width * frame->height + * get_depth(frame->format)) >> 3); +} + +static int +mode_init_ov_sensor_regs(struct usb_ov511 *ov, int width, int height, + int mode, int sub_flag, int qvga) +{ + int clock; + + /******** Mode (VGA/QVGA) and sensor specific regs ********/ + + switch (ov->sensor) { + case SEN_OV7610: + i2c_w(ov, 0x14, qvga?0x24:0x04); +// FIXME: Does this improve the image quality or frame rate? +#if 0 + i2c_w_mask(ov, 0x28, qvga?0x00:0x20, 0x20); + i2c_w(ov, 0x24, 0x10); + i2c_w(ov, 0x25, qvga?0x40:0x8a); + i2c_w(ov, 0x2f, qvga?0x30:0xb0); + i2c_w(ov, 0x35, qvga?0x1c:0x9c); +#endif + break; + case SEN_OV7620: +// i2c_w(ov, 0x2b, 0x00); + i2c_w(ov, 0x14, qvga?0xa4:0x84); + i2c_w_mask(ov, 0x28, qvga?0x00:0x20, 0x20); + i2c_w(ov, 0x24, qvga?0x20:0x3a); + i2c_w(ov, 0x25, qvga?0x30:0x60); + i2c_w_mask(ov, 0x2d, qvga?0x40:0x00, 0x40); + i2c_w_mask(ov, 0x67, qvga?0xf0:0x90, 0xf0); + i2c_w_mask(ov, 0x74, qvga?0x20:0x00, 0x20); + break; + case SEN_OV76BE: +// i2c_w(ov, 0x2b, 0x00); + i2c_w(ov, 0x14, qvga?0xa4:0x84); +// FIXME: Enable this once 7620AE uses 7620 initial settings +#if 0 + i2c_w_mask(ov, 0x28, qvga?0x00:0x20, 0x20); + i2c_w(ov, 0x24, qvga?0x20:0x3a); + i2c_w(ov, 0x25, qvga?0x30:0x60); + i2c_w_mask(ov, 0x2d, qvga?0x40:0x00, 0x40); + i2c_w_mask(ov, 0x67, qvga?0xb0:0x90, 0xf0); + i2c_w_mask(ov, 0x74, qvga?0x20:0x00, 0x20); +#endif + break; + case SEN_OV6620: + i2c_w(ov, 0x14, qvga?0x24:0x04); + break; + case SEN_OV6630: + i2c_w(ov, 0x14, qvga?0xa0:0x80); + break; + default: + err("Invalid sensor"); + return -EINVAL; + } + + /******** Palette-specific regs ********/ + + if (mode == VIDEO_PALETTE_GREY) { + if (ov->sensor == SEN_OV7610 || ov->sensor == SEN_OV76BE) { + /* these aren't valid on the OV6620/OV7620/6630? */ + i2c_w_mask(ov, 0x0e, 0x40, 0x40); + } + + if (ov->sensor == SEN_OV6630 && ov->bridge == BRG_OV518 + && ov518_color) { + i2c_w_mask(ov, 0x12, 0x00, 0x10); + i2c_w_mask(ov, 0x13, 0x00, 0x20); + } else { + i2c_w_mask(ov, 0x13, 0x20, 0x20); + } + } else { + if (ov->sensor == SEN_OV7610 || ov->sensor == SEN_OV76BE) { + /* not valid on the OV6620/OV7620/6630? */ + i2c_w_mask(ov, 0x0e, 0x00, 0x40); + } + + /* The OV518 needs special treatment. Although both the OV518 + * and the OV6630 support a 16-bit video bus, only the 8 bit Y + * bus is actually used. The UV bus is tied to ground. + * Therefore, the OV6630 needs to be in 8-bit multiplexed + * output mode */ + + if (ov->sensor == SEN_OV6630 && ov->bridge == BRG_OV518 + && ov518_color) { + i2c_w_mask(ov, 0x12, 0x10, 0x10); + i2c_w_mask(ov, 0x13, 0x20, 0x20); + } else { + i2c_w_mask(ov, 0x13, 0x00, 0x20); + } + } + + /******** Clock programming ********/ + + /* The OV6620 needs special handling. This prevents the + * severe banding that normally occurs */ + if (ov->sensor == SEN_OV6620 || ov->sensor == SEN_OV6630) + { + /* Clock down */ + + i2c_w(ov, 0x2a, 0x04); + + if (ov->compress) { +// clock = 0; /* This ensures the highest frame rate */ + clock = 3; + } else if (clockdiv == -1) { /* If user didn't override it */ + clock = 3; /* Gives better exposure time */ + } else { + clock = clockdiv; + } + + PDEBUG(4, "Setting clock divisor to %d", clock); + + i2c_w(ov, 0x11, clock); + + i2c_w(ov, 0x2a, 0x84); + /* This next setting is critical. It seems to improve + * the gain or the contrast. The "reserved" bits seem + * to have some effect in this case. */ + i2c_w(ov, 0x2d, 0x85); + } + else + { + if (ov->compress) { + clock = 1; /* This ensures the highest frame rate */ + } else if (clockdiv == -1) { /* If user didn't override it */ + /* Calculate and set the clock divisor */ + clock = ((sub_flag ? ov->subw * ov->subh + : width * height) + * (mode == VIDEO_PALETTE_GREY ? 2 : 3) / 2) + / 66000; + } else { + clock = clockdiv; + } + + PDEBUG(4, "Setting clock divisor to %d", clock); + + i2c_w(ov, 0x11, clock); + } + + /******** Special Features ********/ + + if (framedrop >= 0) + i2c_w(ov, 0x16, framedrop); + + /* Test Pattern */ + i2c_w_mask(ov, 0x12, (testpat?0x02:0x00), 0x02); + + /* Enable auto white balance */ + i2c_w_mask(ov, 0x12, 0x04, 0x04); + + // This will go away as soon as ov51x_mode_init_sensor_regs() + // is fully tested. + /* 7620/6620/6630? don't have register 0x35, so play it safe */ + if (ov->sensor == SEN_OV7610 || ov->sensor == SEN_OV76BE) { + if (width == 640 && height == 480) + i2c_w(ov, 0x35, 0x9e); + else + i2c_w(ov, 0x35, 0x1e); + } + + return 0; +} + +static int +set_ov_sensor_window(struct usb_ov511 *ov, int width, int height, int mode, + int sub_flag) +{ + int ret; + int hwsbase, hwebase, vwsbase, vwebase, hwsize, vwsize; + int hoffset, voffset, hwscale = 0, vwscale = 0; + + /* The different sensor ICs handle setting up of window differently. + * IF YOU SET IT WRONG, YOU WILL GET ALL ZERO ISOC DATA FROM OV51x!!! */ + switch (ov->sensor) { + case SEN_OV7610: + case SEN_OV76BE: + hwsbase = 0x38; + hwebase = 0x3a; + vwsbase = vwebase = 0x05; + break; + case SEN_OV6620: + case SEN_OV6630: + hwsbase = 0x38; + hwebase = 0x3a; + vwsbase = 0x05; + vwebase = 0x06; + break; + case SEN_OV7620: + hwsbase = 0x2f; /* From 7620.SET (spec is wrong) */ + hwebase = 0x2f; + vwsbase = vwebase = 0x05; + break; + default: + err("Invalid sensor"); + return -EINVAL; + } + + if (ov->sensor == SEN_OV6620 || ov->sensor == SEN_OV6630) { + /* Note: OV518(+) does downsample on its own) */ + if ((width > 176 && height > 144) + || ov->bclass == BCL_OV518) { /* CIF */ + ret = mode_init_ov_sensor_regs(ov, width, height, + mode, sub_flag, 0); + if (ret < 0) + return ret; + hwscale = 1; + vwscale = 1; /* The datasheet says 0; it's wrong */ + hwsize = 352; + vwsize = 288; + } else if (width > 176 || height > 144) { + err("Illegal dimensions"); + return -EINVAL; + } else { /* QCIF */ + ret = mode_init_ov_sensor_regs(ov, width, height, + mode, sub_flag, 1); + if (ret < 0) + return ret; + hwsize = 176; + vwsize = 144; + } + } else { + if (width > 320 && height > 240) { /* VGA */ + ret = mode_init_ov_sensor_regs(ov, width, height, + mode, sub_flag, 0); + if (ret < 0) + return ret; + hwscale = 2; + vwscale = 1; + hwsize = 640; + vwsize = 480; + } else if (width > 320 || height > 240) { + err("Illegal dimensions"); + return -EINVAL; + } else { /* QVGA */ + ret = mode_init_ov_sensor_regs(ov, width, height, + mode, sub_flag, 1); + if (ret < 0) + return ret; + hwscale = 1; + hwsize = 320; + vwsize = 240; + } + } + + /* Center the window */ + hoffset = ((hwsize - width) / 2) >> hwscale; + voffset = ((vwsize - height) / 2) >> vwscale; + + /* FIXME! - This needs to be changed to support 160x120 and 6620!!! */ + if (sub_flag) { + i2c_w(ov, 0x17, hwsbase+(ov->subx>>hwscale)); + i2c_w(ov, 0x18, hwebase+((ov->subx+ov->subw)>>hwscale)); + i2c_w(ov, 0x19, vwsbase+(ov->suby>>vwscale)); + i2c_w(ov, 0x1a, vwebase+((ov->suby+ov->subh)>>vwscale)); + } else { + i2c_w(ov, 0x17, hwsbase + hoffset); + i2c_w(ov, 0x18, hwebase + hoffset + (hwsize>>hwscale)); + i2c_w(ov, 0x19, vwsbase + voffset); + i2c_w(ov, 0x1a, vwebase + voffset + (vwsize>>vwscale)); + } + +#ifdef OV511_DEBUG + if (dump_sensor) + dump_i2c_regs(ov); +#endif + + return 0; +} + +/* Set up the OV511/OV511+ with the given image parameters. + * + * Do not put any sensor-specific code in here (including I2C I/O functions) + */ +static int +ov511_mode_init_regs(struct usb_ov511 *ov, + int width, int height, int mode, int sub_flag) +{ + int hsegs, vsegs; + + if (sub_flag) { + width = ov->subw; + height = ov->subh; + } + + PDEBUG(3, "width:%d, height:%d, mode:%d, sub:%d", + width, height, mode, sub_flag); + + // FIXME: This should be moved to a 7111a-specific function once + // subcapture is dealt with properly + if (ov->sensor == SEN_SAA7111A) { + if (width == 320 && height == 240) { + /* No need to do anything special */ + } else if (width == 640 && height == 480) { + /* Set the OV511 up as 320x480, but keep the + * V4L resolution as 640x480 */ + width = 320; + } else { + err("SAA7111A only allows 320x240 or 640x480"); + return -EINVAL; + } + } + + /* Make sure width and height are a multiple of 8 */ + if (width % 8 || height % 8) { + err("Invalid size (%d, %d) (mode = %d)", width, height, mode); + return -EINVAL; + } + + if (width < ov->minwidth || height < ov->minheight) { + err("Requested dimensions are too small"); + return -EINVAL; + } + + if (ov51x_stop(ov) < 0) + return -EIO; + + if (mode == VIDEO_PALETTE_GREY) { + reg_w(ov, R511_CAM_UV_EN, 0x00); + reg_w(ov, R511_SNAP_UV_EN, 0x00); + reg_w(ov, R511_SNAP_OPTS, 0x01); + } else { + reg_w(ov, R511_CAM_UV_EN, 0x01); + reg_w(ov, R511_SNAP_UV_EN, 0x01); + reg_w(ov, R511_SNAP_OPTS, 0x03); + } + + /* Here I'm assuming that snapshot size == image size. + * I hope that's always true. --claudio + */ + hsegs = (width >> 3) - 1; + vsegs = (height >> 3) - 1; + + reg_w(ov, R511_CAM_PXCNT, hsegs); + reg_w(ov, R511_CAM_LNCNT, vsegs); + reg_w(ov, R511_CAM_PXDIV, 0x00); + reg_w(ov, R511_CAM_LNDIV, 0x00); + + /* YUV420, low pass filter on */ + reg_w(ov, R511_CAM_OPTS, 0x03); + + /* Snapshot additions */ + reg_w(ov, R511_SNAP_PXCNT, hsegs); + reg_w(ov, R511_SNAP_LNCNT, vsegs); + reg_w(ov, R511_SNAP_PXDIV, 0x00); + reg_w(ov, R511_SNAP_LNDIV, 0x00); + + if (ov->compress) { + /* Enable Y and UV quantization and compression */ + reg_w(ov, R511_COMP_EN, 0x07); + reg_w(ov, R511_COMP_LUT_EN, 0x03); + ov51x_reset(ov, OV511_RESET_OMNICE); + } + + if (ov51x_restart(ov) < 0) + return -EIO; + + return 0; +} + +/* Sets up the OV518/OV518+ with the given image parameters + * + * OV518 needs a completely different approach, until we can figure out what + * the individual registers do. Also, only 15 FPS is supported now. + * + * Do not put any sensor-specific code in here (including I2C I/O functions) + */ +static int +ov518_mode_init_regs(struct usb_ov511 *ov, + int width, int height, int mode, int sub_flag) +{ + int hsegs, vsegs, hi_res; + + if (sub_flag) { + width = ov->subw; + height = ov->subh; + } + + PDEBUG(3, "width:%d, height:%d, mode:%d, sub:%d", + width, height, mode, sub_flag); + + if (width % 16 || height % 8) { + err("Invalid size (%d, %d)", width, height); + return -EINVAL; + } + + if (width < ov->minwidth || height < ov->minheight) { + err("Requested dimensions are too small"); + return -EINVAL; + } + + if (width >= 320 && height >= 240) { + hi_res = 1; + } else if (width >= 320 || height >= 240) { + err("Invalid width/height combination (%d, %d)", width, height); + return -EINVAL; + } else { + hi_res = 0; + } + + if (ov51x_stop(ov) < 0) + return -EIO; + + /******** Set the mode ********/ + + reg_w(ov, 0x2b, 0); + reg_w(ov, 0x2c, 0); + reg_w(ov, 0x2d, 0); + reg_w(ov, 0x2e, 0); + reg_w(ov, 0x3b, 0); + reg_w(ov, 0x3c, 0); + reg_w(ov, 0x3d, 0); + reg_w(ov, 0x3e, 0); + + if (ov->bridge == BRG_OV518 && ov518_color) { + /* OV518 needs U and V swapped */ + i2c_w_mask(ov, 0x15, 0x00, 0x01); + + if (mode == VIDEO_PALETTE_GREY) { + /* Set 16-bit input format (UV data are ignored) */ + reg_w_mask(ov, 0x20, 0x00, 0x08); + + /* Set 8-bit (4:0:0) output format */ + reg_w_mask(ov, 0x28, 0x00, 0xf0); + reg_w_mask(ov, 0x38, 0x00, 0xf0); + } else { + /* Set 8-bit (YVYU) input format */ + reg_w_mask(ov, 0x20, 0x08, 0x08); + + /* Set 12-bit (4:2:0) output format */ + reg_w_mask(ov, 0x28, 0x80, 0xf0); + reg_w_mask(ov, 0x38, 0x80, 0xf0); + } + } else { + reg_w(ov, 0x28, (mode == VIDEO_PALETTE_GREY) ? 0x00:0x80); + reg_w(ov, 0x38, (mode == VIDEO_PALETTE_GREY) ? 0x00:0x80); + } + + hsegs = width / 16; + vsegs = height / 4; + + reg_w(ov, 0x29, hsegs); + reg_w(ov, 0x2a, vsegs); + + reg_w(ov, 0x39, hsegs); + reg_w(ov, 0x3a, vsegs); + + /* Windows driver does this here; who knows why */ + reg_w(ov, 0x2f, 0x80); + + /******** Set the framerate (to 15 FPS) ********/ + + /* Mode independent, but framerate dependent, regs */ + reg_w(ov, 0x51, 0x02); /* Clock divider; lower==faster */ + reg_w(ov, 0x22, 0x18); + reg_w(ov, 0x23, 0xff); + + if (ov->bridge == BRG_OV518PLUS) + reg_w(ov, 0x21, 0x19); + else + reg_w(ov, 0x71, 0x19); /* Compression-related? */ + + // FIXME: Sensor-specific + /* Bit 5 is what matters here. Of course, it is "reserved" */ + i2c_w(ov, 0x54, 0x23); + + reg_w(ov, 0x2f, 0x80); + + if (ov->bridge == BRG_OV518PLUS) { + reg_w(ov, 0x24, 0x94); + reg_w(ov, 0x25, 0x90); + ov518_reg_w32(ov, 0xc4, 400, 2); /* 190h */ + ov518_reg_w32(ov, 0xc6, 540, 2); /* 21ch */ + ov518_reg_w32(ov, 0xc7, 540, 2); /* 21ch */ + ov518_reg_w32(ov, 0xc8, 108, 2); /* 6ch */ + ov518_reg_w32(ov, 0xca, 131098, 3); /* 2001ah */ + ov518_reg_w32(ov, 0xcb, 532, 2); /* 214h */ + ov518_reg_w32(ov, 0xcc, 2400, 2); /* 960h */ + ov518_reg_w32(ov, 0xcd, 32, 2); /* 20h */ + ov518_reg_w32(ov, 0xce, 608, 2); /* 260h */ + } else { + reg_w(ov, 0x24, 0x9f); + reg_w(ov, 0x25, 0x90); + ov518_reg_w32(ov, 0xc4, 400, 2); /* 190h */ + ov518_reg_w32(ov, 0xc6, 500, 2); /* 1f4h */ + ov518_reg_w32(ov, 0xc7, 500, 2); /* 1f4h */ + ov518_reg_w32(ov, 0xc8, 142, 2); /* 8eh */ + ov518_reg_w32(ov, 0xca, 131098, 3); /* 2001ah */ + ov518_reg_w32(ov, 0xcb, 532, 2); /* 214h */ + ov518_reg_w32(ov, 0xcc, 2000, 2); /* 7d0h */ + ov518_reg_w32(ov, 0xcd, 32, 2); /* 20h */ + ov518_reg_w32(ov, 0xce, 608, 2); /* 260h */ + } + + reg_w(ov, 0x2f, 0x80); + + if (ov51x_restart(ov) < 0) + return -EIO; + + /* Reset it just for good measure */ + if (ov51x_reset(ov, OV511_RESET_NOREGS) < 0) + return -EIO; + + return 0; +} + +/* This is a wrapper around the OV511, OV518, and sensor specific functions */ +static int +mode_init_regs(struct usb_ov511 *ov, + int width, int height, int mode, int sub_flag) +{ + int rc = 0; + + if (!ov || !ov->dev) + return -EFAULT; + + if (ov->bclass == BCL_OV518) { + rc = ov518_mode_init_regs(ov, width, height, mode, sub_flag); + } else { + rc = ov511_mode_init_regs(ov, width, height, mode, sub_flag); + } + + if (FATAL_ERROR(rc)) + return rc; + + switch (ov->sensor) { + case SEN_OV7610: + case SEN_OV7620: + case SEN_OV76BE: + case SEN_OV8600: + case SEN_OV6620: + case SEN_OV6630: + rc = set_ov_sensor_window(ov, width, height, mode, sub_flag); + break; + case SEN_KS0127: + case SEN_KS0127B: + err("KS0127-series decoders not supported yet"); + rc = -EINVAL; + break; + case SEN_SAA7111A: +// rc = mode_init_saa_sensor_regs(ov, width, height, mode, +// sub_flag); + + PDEBUG(1, "SAA status = 0x%02X", i2c_r(ov, 0x1f)); + break; + default: + err("Unknown sensor"); + rc = -EINVAL; + } + + if (FATAL_ERROR(rc)) + return rc; + + /* Sensor-independent settings */ + rc = sensor_set_auto_brightness(ov, ov->auto_brt); + if (FATAL_ERROR(rc)) + return rc; + + rc = sensor_set_auto_exposure(ov, ov->auto_exp); + if (FATAL_ERROR(rc)) + return rc; + + rc = sensor_set_banding_filter(ov, bandingfilter); + if (FATAL_ERROR(rc)) + return rc; + + if (ov->lightfreq) { + rc = sensor_set_light_freq(ov, lightfreq); + if (FATAL_ERROR(rc)) + return rc; + } + + rc = sensor_set_backlight(ov, ov->backlight); + if (FATAL_ERROR(rc)) + return rc; + + rc = sensor_set_mirror(ov, ov->mirror); + if (FATAL_ERROR(rc)) + return rc; + + return 0; +} + +/* This sets the default image parameters. This is useful for apps that use + * read() and do not set these. + */ +static int +ov51x_set_default_params(struct usb_ov511 *ov) +{ + int i; + + /* Set default sizes in case IOCTL (VIDIOCMCAPTURE) is not used + * (using read() instead). */ + for (i = 0; i < OV511_NUMFRAMES; i++) { + ov->frame[i].width = ov->maxwidth; + ov->frame[i].height = ov->maxheight; + ov->frame[i].bytes_read = 0; + if (force_palette) + ov->frame[i].format = force_palette; + else + ov->frame[i].format = VIDEO_PALETTE_YUV420; + + ov->frame[i].depth = get_depth(ov->frame[i].format); + } + + PDEBUG(3, "%dx%d, %s", ov->maxwidth, ov->maxheight, + symbolic(v4l1_plist, ov->frame[0].format)); + + /* Initialize to max width/height, YUV420 or RGB24 (if supported) */ + if (mode_init_regs(ov, ov->maxwidth, ov->maxheight, + ov->frame[0].format, 0) < 0) + return -EINVAL; + + return 0; +} + +/********************************************************************** + * + * Video decoder stuff + * + **********************************************************************/ + +/* Set analog input port of decoder */ +static int +decoder_set_input(struct usb_ov511 *ov, int input) +{ + PDEBUG(4, "port %d", input); + + switch (ov->sensor) { + case SEN_SAA7111A: + { + /* Select mode */ + i2c_w_mask(ov, 0x02, input, 0x07); + /* Bypass chrominance trap for modes 4..7 */ + i2c_w_mask(ov, 0x09, (input > 3) ? 0x80:0x00, 0x80); + break; + } + default: + return -EINVAL; + } + + return 0; +} + +/* Get ASCII name of video input */ +static int +decoder_get_input_name(struct usb_ov511 *ov, int input, char *name) +{ + switch (ov->sensor) { + case SEN_SAA7111A: + { + if (input < 0 || input > 7) + return -EINVAL; + else if (input < 4) + sprintf(name, "CVBS-%d", input); + else // if (input < 8) + sprintf(name, "S-Video-%d", input - 4); + break; + } + default: + sprintf(name, "%s", "Camera"); + } + + return 0; +} + +/* Set norm (NTSC, PAL, SECAM, AUTO) */ +static int +decoder_set_norm(struct usb_ov511 *ov, int norm) +{ + PDEBUG(4, "%d", norm); + + switch (ov->sensor) { + case SEN_SAA7111A: + { + int reg_8, reg_e; + + if (norm == VIDEO_MODE_NTSC) { + reg_8 = 0x40; /* 60 Hz */ + reg_e = 0x00; /* NTSC M / PAL BGHI */ + } else if (norm == VIDEO_MODE_PAL) { + reg_8 = 0x00; /* 50 Hz */ + reg_e = 0x00; /* NTSC M / PAL BGHI */ + } else if (norm == VIDEO_MODE_AUTO) { + reg_8 = 0x80; /* Auto field detect */ + reg_e = 0x00; /* NTSC M / PAL BGHI */ + } else if (norm == VIDEO_MODE_SECAM) { + reg_8 = 0x00; /* 50 Hz */ + reg_e = 0x50; /* SECAM / PAL 4.43 */ + } else { + return -EINVAL; + } + + i2c_w_mask(ov, 0x08, reg_8, 0xc0); + i2c_w_mask(ov, 0x0e, reg_e, 0x70); + break; + } + default: + return -EINVAL; + } + + return 0; +} + +/********************************************************************** + * + * Raw data parsing + * + **********************************************************************/ + +/* Copies a 64-byte segment at pIn to an 8x8 block at pOut. The width of the + * image at pOut is specified by w. + */ +static inline void +make_8x8(unsigned char *pIn, unsigned char *pOut, int w) +{ + unsigned char *pOut1 = pOut; + int x, y; + + for (y = 0; y < 8; y++) { + pOut1 = pOut; + for (x = 0; x < 8; x++) { + *pOut1++ = *pIn++; + } + pOut += w; + } +} + +/* + * For RAW BW (YUV 4:0:0) images, data show up in 256 byte segments. + * The segments represent 4 squares of 8x8 pixels as follows: + * + * 0 1 ... 7 64 65 ... 71 ... 192 193 ... 199 + * 8 9 ... 15 72 73 ... 79 200 201 ... 207 + * ... ... ... + * 56 57 ... 63 120 121 ... 127 248 249 ... 255 + * + */ +static void +yuv400raw_to_yuv400p(struct ov511_frame *frame, + unsigned char *pIn0, unsigned char *pOut0) +{ + int x, y; + unsigned char *pIn, *pOut, *pOutLine; + + /* Copy Y */ + pIn = pIn0; + pOutLine = pOut0; + for (y = 0; y < frame->rawheight - 1; y += 8) { + pOut = pOutLine; + for (x = 0; x < frame->rawwidth - 1; x += 8) { + make_8x8(pIn, pOut, frame->rawwidth); + pIn += 64; + pOut += 8; + } + pOutLine += 8 * frame->rawwidth; + } +} + +/* + * For YUV 4:2:0 images, the data show up in 384 byte segments. + * The first 64 bytes of each segment are U, the next 64 are V. The U and + * V are arranged as follows: + * + * 0 1 ... 7 + * 8 9 ... 15 + * ... + * 56 57 ... 63 + * + * U and V are shipped at half resolution (1 U,V sample -> one 2x2 block). + * + * The next 256 bytes are full resolution Y data and represent 4 squares + * of 8x8 pixels as follows: + * + * 0 1 ... 7 64 65 ... 71 ... 192 193 ... 199 + * 8 9 ... 15 72 73 ... 79 200 201 ... 207 + * ... ... ... + * 56 57 ... 63 120 121 ... 127 ... 248 249 ... 255 + * + * Note that the U and V data in one segment represent a 16 x 16 pixel + * area, but the Y data represent a 32 x 8 pixel area. If the width is not an + * even multiple of 32, the extra 8x8 blocks within a 32x8 block belong to the + * next horizontal stripe. + * + * If dumppix module param is set, _parse_data just dumps the incoming segments, + * verbatim, in order, into the frame. When used with vidcat -f ppm -s 640x480 + * this puts the data on the standard output and can be analyzed with the + * parseppm.c utility I wrote. That's a much faster way for figuring out how + * these data are scrambled. + */ + +/* Converts from raw, uncompressed segments at pIn0 to a YUV420P frame at pOut0. + * + * FIXME: Currently only handles width and height that are multiples of 16 + */ +static void +yuv420raw_to_yuv420p(struct ov511_frame *frame, + unsigned char *pIn0, unsigned char *pOut0) +{ + int k, x, y; + unsigned char *pIn, *pOut, *pOutLine; + const unsigned int a = frame->rawwidth * frame->rawheight; + const unsigned int w = frame->rawwidth / 2; + + /* Copy U and V */ + pIn = pIn0; + pOutLine = pOut0 + a; + for (y = 0; y < frame->rawheight - 1; y += 16) { + pOut = pOutLine; + for (x = 0; x < frame->rawwidth - 1; x += 16) { + make_8x8(pIn, pOut, w); + make_8x8(pIn + 64, pOut + a/4, w); + pIn += 384; + pOut += 8; + } + pOutLine += 8 * w; + } + + /* Copy Y */ + pIn = pIn0 + 128; + pOutLine = pOut0; + k = 0; + for (y = 0; y < frame->rawheight - 1; y += 8) { + pOut = pOutLine; + for (x = 0; x < frame->rawwidth - 1; x += 8) { + make_8x8(pIn, pOut, frame->rawwidth); + pIn += 64; + pOut += 8; + if ((++k) > 3) { + k = 0; + pIn += 128; + } + } + pOutLine += 8 * frame->rawwidth; + } +} + +/********************************************************************** + * + * Decompression + * + **********************************************************************/ + +static int +request_decompressor(struct usb_ov511 *ov) +{ + if (ov->bclass == BCL_OV511 || ov->bclass == BCL_OV518) { + err("No decompressor available"); + } else { + err("Unknown bridge"); + } + + return -ENOSYS; +} + +static void +decompress(struct usb_ov511 *ov, struct ov511_frame *frame, + unsigned char *pIn0, unsigned char *pOut0) +{ + if (!ov->decomp_ops) + if (request_decompressor(ov)) + return; + +} + +/********************************************************************** + * + * Format conversion + * + **********************************************************************/ + +/* Fuses even and odd fields together, and doubles width. + * INPUT: an odd field followed by an even field at pIn0, in YUV planar format + * OUTPUT: a normal YUV planar image, with correct aspect ratio + */ +static void +deinterlace(struct ov511_frame *frame, int rawformat, + unsigned char *pIn0, unsigned char *pOut0) +{ + const int fieldheight = frame->rawheight / 2; + const int fieldpix = fieldheight * frame->rawwidth; + const int w = frame->width; + int x, y; + unsigned char *pInEven, *pInOdd, *pOut; + + PDEBUG(5, "fieldheight=%d", fieldheight); + + if (frame->rawheight != frame->height) { + err("invalid height"); + return; + } + + if ((frame->rawwidth * 2) != frame->width) { + err("invalid width"); + return; + } + + /* Y */ + pInOdd = pIn0; + pInEven = pInOdd + fieldpix; + pOut = pOut0; + for (y = 0; y < fieldheight; y++) { + for (x = 0; x < frame->rawwidth; x++) { + *pOut = *pInEven; + *(pOut+1) = *pInEven++; + *(pOut+w) = *pInOdd; + *(pOut+w+1) = *pInOdd++; + pOut += 2; + } + pOut += w; + } + + if (rawformat == RAWFMT_YUV420) { + /* U */ + pInOdd = pIn0 + fieldpix * 2; + pInEven = pInOdd + fieldpix / 4; + for (y = 0; y < fieldheight / 2; y++) { + for (x = 0; x < frame->rawwidth / 2; x++) { + *pOut = *pInEven; + *(pOut+1) = *pInEven++; + *(pOut+w/2) = *pInOdd; + *(pOut+w/2+1) = *pInOdd++; + pOut += 2; + } + pOut += w/2; + } + /* V */ + pInOdd = pIn0 + fieldpix * 2 + fieldpix / 2; + pInEven = pInOdd + fieldpix / 4; + for (y = 0; y < fieldheight / 2; y++) { + for (x = 0; x < frame->rawwidth / 2; x++) { + *pOut = *pInEven; + *(pOut+1) = *pInEven++; + *(pOut+w/2) = *pInOdd; + *(pOut+w/2+1) = *pInOdd++; + pOut += 2; + } + pOut += w/2; + } + } +} + +static void +ov51x_postprocess_grey(struct usb_ov511 *ov, struct ov511_frame *frame) +{ + /* Deinterlace frame, if necessary */ + if (ov->sensor == SEN_SAA7111A && frame->rawheight >= 480) { + if (frame->compressed) + decompress(ov, frame, frame->rawdata, + frame->tempdata); + else + yuv400raw_to_yuv400p(frame, frame->rawdata, + frame->tempdata); + + deinterlace(frame, RAWFMT_YUV400, frame->tempdata, + frame->data); + } else { + if (frame->compressed) + decompress(ov, frame, frame->rawdata, + frame->data); + else + yuv400raw_to_yuv400p(frame, frame->rawdata, + frame->data); + } +} + +/* Process raw YUV420 data into standard YUV420P */ +static void +ov51x_postprocess_yuv420(struct usb_ov511 *ov, struct ov511_frame *frame) +{ + /* Deinterlace frame, if necessary */ + if (ov->sensor == SEN_SAA7111A && frame->rawheight >= 480) { + if (frame->compressed) + decompress(ov, frame, frame->rawdata, frame->tempdata); + else + yuv420raw_to_yuv420p(frame, frame->rawdata, + frame->tempdata); + + deinterlace(frame, RAWFMT_YUV420, frame->tempdata, + frame->data); + } else { + if (frame->compressed) + decompress(ov, frame, frame->rawdata, frame->data); + else + yuv420raw_to_yuv420p(frame, frame->rawdata, + frame->data); + } +} + +/* Post-processes the specified frame. This consists of: + * 1. Decompress frame, if necessary + * 2. Deinterlace frame and scale to proper size, if necessary + * 3. Convert from YUV planar to destination format, if necessary + * 4. Fix the RGB offset, if necessary + */ +static void +ov51x_postprocess(struct usb_ov511 *ov, struct ov511_frame *frame) +{ + if (dumppix) { + memset(frame->data, 0, + MAX_DATA_SIZE(ov->maxwidth, ov->maxheight)); + PDEBUG(4, "Dumping %d bytes", frame->bytes_recvd); + memcpy(frame->data, frame->rawdata, frame->bytes_recvd); + } else { + switch (frame->format) { + case VIDEO_PALETTE_GREY: + ov51x_postprocess_grey(ov, frame); + break; + case VIDEO_PALETTE_YUV420: + case VIDEO_PALETTE_YUV420P: + ov51x_postprocess_yuv420(ov, frame); + break; + default: + err("Cannot convert data to %s", + symbolic(v4l1_plist, frame->format)); + } + } +} + +/********************************************************************** + * + * OV51x data transfer, IRQ handler + * + **********************************************************************/ + +static inline void +ov511_move_data(struct usb_ov511 *ov, unsigned char *in, int n) +{ + int num, offset; + int pnum = in[ov->packet_size - 1]; /* Get packet number */ + int max_raw = MAX_RAW_DATA_SIZE(ov->maxwidth, ov->maxheight); + struct ov511_frame *frame = &ov->frame[ov->curframe]; + struct timeval *ts; + + /* SOF/EOF packets have 1st to 8th bytes zeroed and the 9th + * byte non-zero. The EOF packet has image width/height in the + * 10th and 11th bytes. The 9th byte is given as follows: + * + * bit 7: EOF + * 6: compression enabled + * 5: 422/420/400 modes + * 4: 422/420/400 modes + * 3: 1 + * 2: snapshot button on + * 1: snapshot frame + * 0: even/odd field + */ + + if (printph) { + info("ph(%3d): %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x", + pnum, in[0], in[1], in[2], in[3], in[4], in[5], in[6], + in[7], in[8], in[9], in[10], in[11]); + } + + /* Check for SOF/EOF packet */ + if ((in[0] | in[1] | in[2] | in[3] | in[4] | in[5] | in[6] | in[7]) || + (~in[8] & 0x08)) + goto check_middle; + + /* Frame end */ + if (in[8] & 0x80) { + ts = (struct timeval *)(frame->data + + MAX_FRAME_SIZE(ov->maxwidth, ov->maxheight)); + do_gettimeofday(ts); + + /* Get the actual frame size from the EOF header */ + frame->rawwidth = ((int)(in[9]) + 1) * 8; + frame->rawheight = ((int)(in[10]) + 1) * 8; + + PDEBUG(4, "Frame end, frame=%d, pnum=%d, w=%d, h=%d, recvd=%d", + ov->curframe, pnum, frame->rawwidth, frame->rawheight, + frame->bytes_recvd); + + /* Validate the header data */ + RESTRICT_TO_RANGE(frame->rawwidth, ov->minwidth, ov->maxwidth); + RESTRICT_TO_RANGE(frame->rawheight, ov->minheight, + ov->maxheight); + + /* Don't allow byte count to exceed buffer size */ + RESTRICT_TO_RANGE(frame->bytes_recvd, 8, max_raw); + + if (frame->scanstate == STATE_LINES) { + int nextf; + + frame->grabstate = FRAME_DONE; + wake_up_interruptible(&frame->wq); + + /* If next frame is ready or grabbing, + * point to it */ + nextf = (ov->curframe + 1) % OV511_NUMFRAMES; + if (ov->frame[nextf].grabstate == FRAME_READY + || ov->frame[nextf].grabstate == FRAME_GRABBING) { + ov->curframe = nextf; + ov->frame[nextf].scanstate = STATE_SCANNING; + } else { + if (frame->grabstate == FRAME_DONE) { + PDEBUG(4, "** Frame done **"); + } else { + PDEBUG(4, "Frame not ready? state = %d", + ov->frame[nextf].grabstate); + } + + ov->curframe = -1; + } + } else { + PDEBUG(5, "Frame done, but not scanning"); + } + /* Image corruption caused by misplaced frame->segment = 0 + * fixed by carlosf@conectiva.com.br + */ + } else { + /* Frame start */ + PDEBUG(4, "Frame start, framenum = %d", ov->curframe); + + /* Check to see if it's a snapshot frame */ + /* FIXME?? Should the snapshot reset go here? Performance? */ + if (in[8] & 0x02) { + frame->snapshot = 1; + PDEBUG(3, "snapshot detected"); + } + + frame->scanstate = STATE_LINES; + frame->bytes_recvd = 0; + frame->compressed = in[8] & 0x40; + } + +check_middle: + /* Are we in a frame? */ + if (frame->scanstate != STATE_LINES) { + PDEBUG(5, "Not in a frame; packet skipped"); + return; + } + + /* If frame start, skip header */ + if (frame->bytes_recvd == 0) + offset = 9; + else + offset = 0; + + num = n - offset - 1; + + /* Dump all data exactly as received */ + if (dumppix == 2) { + frame->bytes_recvd += n - 1; + if (frame->bytes_recvd <= max_raw) + memcpy(frame->rawdata + frame->bytes_recvd - (n - 1), + in, n - 1); + else + PDEBUG(3, "Raw data buffer overrun!! (%d)", + frame->bytes_recvd - max_raw); + } else if (!frame->compressed && !remove_zeros) { + frame->bytes_recvd += num; + if (frame->bytes_recvd <= max_raw) + memcpy(frame->rawdata + frame->bytes_recvd - num, + in + offset, num); + else + PDEBUG(3, "Raw data buffer overrun!! (%d)", + frame->bytes_recvd - max_raw); + } else { /* Remove all-zero FIFO lines (aligned 32-byte blocks) */ + int b, read = 0, allzero, copied = 0; + if (offset) { + frame->bytes_recvd += 32 - offset; // Bytes out + memcpy(frame->rawdata, in + offset, 32 - offset); + read += 32; + } + + while (read < n - 1) { + allzero = 1; + for (b = 0; b < 32; b++) { + if (in[read + b]) { + allzero = 0; + break; + } + } + + if (allzero) { + /* Don't copy it */ + } else { + if (frame->bytes_recvd + copied + 32 <= max_raw) + { + memcpy(frame->rawdata + + frame->bytes_recvd + copied, + in + read, 32); + copied += 32; + } else { + PDEBUG(3, "Raw data buffer overrun!!"); + } + } + read += 32; + } + + frame->bytes_recvd += copied; + } +} + +static inline void +ov518_move_data(struct usb_ov511 *ov, unsigned char *in, int n) +{ + int max_raw = MAX_RAW_DATA_SIZE(ov->maxwidth, ov->maxheight); + struct ov511_frame *frame = &ov->frame[ov->curframe]; + struct timeval *ts; + + /* Don't copy the packet number byte */ + if (ov->packet_numbering) + --n; + + /* A false positive here is likely, until OVT gives me + * the definitive SOF/EOF format */ + if ((!(in[0] | in[1] | in[2] | in[3] | in[5])) && in[6]) { + if (printph) { + info("ph: %2x %2x %2x %2x %2x %2x %2x %2x", in[0], + in[1], in[2], in[3], in[4], in[5], in[6], in[7]); + } + + if (frame->scanstate == STATE_LINES) { + PDEBUG(4, "Detected frame end/start"); + goto eof; + } else { //scanstate == STATE_SCANNING + /* Frame start */ + PDEBUG(4, "Frame start, framenum = %d", ov->curframe); + goto sof; + } + } else { + goto check_middle; + } + +eof: + ts = (struct timeval *)(frame->data + + MAX_FRAME_SIZE(ov->maxwidth, ov->maxheight)); + do_gettimeofday(ts); + + PDEBUG(4, "Frame end, curframe = %d, hw=%d, vw=%d, recvd=%d", + ov->curframe, + (int)(in[9]), (int)(in[10]), frame->bytes_recvd); + + // FIXME: Since we don't know the header formats yet, + // there is no way to know what the actual image size is + frame->rawwidth = frame->width; + frame->rawheight = frame->height; + + /* Validate the header data */ + RESTRICT_TO_RANGE(frame->rawwidth, ov->minwidth, ov->maxwidth); + RESTRICT_TO_RANGE(frame->rawheight, ov->minheight, ov->maxheight); + + /* Don't allow byte count to exceed buffer size */ + RESTRICT_TO_RANGE(frame->bytes_recvd, 8, max_raw); + + if (frame->scanstate == STATE_LINES) { + int nextf; + + frame->grabstate = FRAME_DONE; + wake_up_interruptible(&frame->wq); + + /* If next frame is ready or grabbing, + * point to it */ + nextf = (ov->curframe + 1) % OV511_NUMFRAMES; + if (ov->frame[nextf].grabstate == FRAME_READY + || ov->frame[nextf].grabstate == FRAME_GRABBING) { + ov->curframe = nextf; + ov->frame[nextf].scanstate = STATE_SCANNING; + frame = &ov->frame[nextf]; + } else { + if (frame->grabstate == FRAME_DONE) { + PDEBUG(4, "** Frame done **"); + } else { + PDEBUG(4, "Frame not ready? state = %d", + ov->frame[nextf].grabstate); + } + + ov->curframe = -1; + PDEBUG(4, "SOF dropped (no active frame)"); + return; /* Nowhere to store this frame */ + } + } +sof: + PDEBUG(4, "Starting capture on frame %d", frame->framenum); + +// Snapshot not reverse-engineered yet. +#if 0 + /* Check to see if it's a snapshot frame */ + /* FIXME?? Should the snapshot reset go here? Performance? */ + if (in[8] & 0x02) { + frame->snapshot = 1; + PDEBUG(3, "snapshot detected"); + } +#endif + frame->scanstate = STATE_LINES; + frame->bytes_recvd = 0; + frame->compressed = 1; + +check_middle: + /* Are we in a frame? */ + if (frame->scanstate != STATE_LINES) { + PDEBUG(4, "scanstate: no SOF yet"); + return; + } + + /* Dump all data exactly as received */ + if (dumppix == 2) { + frame->bytes_recvd += n; + if (frame->bytes_recvd <= max_raw) + memcpy(frame->rawdata + frame->bytes_recvd - n, in, n); + else + PDEBUG(3, "Raw data buffer overrun!! (%d)", + frame->bytes_recvd - max_raw); + } else { + /* All incoming data are divided into 8-byte segments. If the + * segment contains all zero bytes, it must be skipped. These + * zero-segments allow the OV518 to mainain a constant data rate + * regardless of the effectiveness of the compression. Segments + * are aligned relative to the beginning of each isochronous + * packet. The first segment in each image is a header (the + * decompressor skips it later). + */ + + int b, read = 0, allzero, copied = 0; + + while (read < n) { + allzero = 1; + for (b = 0; b < 8; b++) { + if (in[read + b]) { + allzero = 0; + break; + } + } + + if (allzero) { + /* Don't copy it */ + } else { + if (frame->bytes_recvd + copied + 8 <= max_raw) + { + memcpy(frame->rawdata + + frame->bytes_recvd + copied, + in + read, 8); + copied += 8; + } else { + PDEBUG(3, "Raw data buffer overrun!!"); + } + } + read += 8; + } + frame->bytes_recvd += copied; + } +} + +static void +ov51x_isoc_irq(struct urb *urb, struct pt_regs *regs) +{ + int i; + struct usb_ov511 *ov; + struct ov511_sbuf *sbuf; + + if (!urb->context) { + PDEBUG(4, "no context"); + return; + } + + sbuf = urb->context; + ov = sbuf->ov; + + if (!ov || !ov->dev || !ov->user) { + PDEBUG(4, "no device, or not open"); + return; + } + + if (!ov->streaming) { + PDEBUG(4, "hmmm... not streaming, but got interrupt"); + return; + } + + if (urb->status == -ENOENT || urb->status == -ECONNRESET) { + PDEBUG(4, "URB unlinked"); + return; + } + + if (urb->status != -EINPROGRESS && urb->status != 0) { + err("ERROR: urb->status=%d: %s", urb->status, + symbolic(urb_errlist, urb->status)); + } + + /* Copy the data received into our frame buffer */ + PDEBUG(5, "sbuf[%d]: Moving %d packets", sbuf->n, + urb->number_of_packets); + for (i = 0; i < urb->number_of_packets; i++) { + /* Warning: Don't call *_move_data() if no frame active! */ + if (ov->curframe >= 0) { + int n = urb->iso_frame_desc[i].actual_length; + int st = urb->iso_frame_desc[i].status; + unsigned char *cdata; + + urb->iso_frame_desc[i].actual_length = 0; + urb->iso_frame_desc[i].status = 0; + + cdata = urb->transfer_buffer + + urb->iso_frame_desc[i].offset; + + if (!n) { + PDEBUG(4, "Zero-length packet"); + continue; + } + + if (st) + PDEBUG(2, "data error: [%d] len=%d, status=%d", + i, n, st); + + if (ov->bclass == BCL_OV511) + ov511_move_data(ov, cdata, n); + else if (ov->bclass == BCL_OV518) + ov518_move_data(ov, cdata, n); + else + err("Unknown bridge device (%d)", ov->bridge); + + } else if (waitqueue_active(&ov->wq)) { + wake_up_interruptible(&ov->wq); + } + } + + /* Resubmit this URB */ + urb->dev = ov->dev; + if ((i = usb_submit_urb(urb, GFP_ATOMIC)) != 0) + err("usb_submit_urb() ret %d", i); + + return; +} + +/**************************************************************************** + * + * Stream initialization and termination + * + ***************************************************************************/ + +static int +ov51x_init_isoc(struct usb_ov511 *ov) +{ + struct urb *urb; + int fx, err, n, size; + + PDEBUG(3, "*** Initializing capture ***"); + + ov->curframe = -1; + + if (ov->bridge == BRG_OV511) { + if (cams == 1) + size = 993; + else if (cams == 2) + size = 513; + else if (cams == 3 || cams == 4) + size = 257; + else { + err("\"cams\" parameter too high!"); + return -1; + } + } else if (ov->bridge == BRG_OV511PLUS) { + if (cams == 1) + size = 961; + else if (cams == 2) + size = 513; + else if (cams == 3 || cams == 4) + size = 257; + else if (cams >= 5 && cams <= 8) + size = 129; + else if (cams >= 9 && cams <= 31) + size = 33; + else { + err("\"cams\" parameter too high!"); + return -1; + } + } else if (ov->bclass == BCL_OV518) { + if (cams == 1) + size = 896; + else if (cams == 2) + size = 512; + else if (cams == 3 || cams == 4) + size = 256; + else if (cams >= 5 && cams <= 8) + size = 128; + else { + err("\"cams\" parameter too high!"); + return -1; + } + } else { + err("invalid bridge type"); + return -1; + } + + // FIXME: OV518 is hardcoded to 15 FPS (alternate 5) for now + if (ov->bclass == BCL_OV518) { + if (packetsize == -1) { + ov518_set_packet_size(ov, 640); + } else { + info("Forcing packet size to %d", packetsize); + ov518_set_packet_size(ov, packetsize); + } + } else { + if (packetsize == -1) { + ov511_set_packet_size(ov, size); + } else { + info("Forcing packet size to %d", packetsize); + ov511_set_packet_size(ov, packetsize); + } + } + + for (n = 0; n < OV511_NUMSBUF; n++) { + urb = usb_alloc_urb(FRAMES_PER_DESC, GFP_KERNEL); + if (!urb) { + err("init isoc: usb_alloc_urb ret. NULL"); + return -ENOMEM; + } + ov->sbuf[n].urb = urb; + urb->dev = ov->dev; + urb->context = &ov->sbuf[n]; + urb->pipe = usb_rcvisocpipe(ov->dev, OV511_ENDPOINT_ADDRESS); + urb->transfer_flags = URB_ISO_ASAP; + urb->transfer_buffer = ov->sbuf[n].data; + urb->complete = ov51x_isoc_irq; + urb->number_of_packets = FRAMES_PER_DESC; + urb->transfer_buffer_length = ov->packet_size * FRAMES_PER_DESC; + urb->interval = 1; + for (fx = 0; fx < FRAMES_PER_DESC; fx++) { + urb->iso_frame_desc[fx].offset = ov->packet_size * fx; + urb->iso_frame_desc[fx].length = ov->packet_size; + } + } + + ov->streaming = 1; + + for (n = 0; n < OV511_NUMSBUF; n++) { + ov->sbuf[n].urb->dev = ov->dev; + err = usb_submit_urb(ov->sbuf[n].urb, GFP_KERNEL); + if (err) { + err("init isoc: usb_submit_urb(%d) ret %d", n, err); + return err; + } + } + + return 0; +} + +static void +ov51x_unlink_isoc(struct usb_ov511 *ov) +{ + int n; + + /* Unschedule all of the iso td's */ + for (n = OV511_NUMSBUF - 1; n >= 0; n--) { + if (ov->sbuf[n].urb) { + usb_kill_urb(ov->sbuf[n].urb); + usb_free_urb(ov->sbuf[n].urb); + ov->sbuf[n].urb = NULL; + } + } +} + +static void +ov51x_stop_isoc(struct usb_ov511 *ov) +{ + if (!ov->streaming || !ov->dev) + return; + + PDEBUG(3, "*** Stopping capture ***"); + + if (ov->bclass == BCL_OV518) + ov518_set_packet_size(ov, 0); + else + ov511_set_packet_size(ov, 0); + + ov->streaming = 0; + + ov51x_unlink_isoc(ov); +} + +static int +ov51x_new_frame(struct usb_ov511 *ov, int framenum) +{ + struct ov511_frame *frame; + int newnum; + + PDEBUG(4, "ov->curframe = %d, framenum = %d", ov->curframe, framenum); + + if (!ov->dev) + return -1; + + /* If we're not grabbing a frame right now and the other frame is */ + /* ready to be grabbed into, then use it instead */ + if (ov->curframe == -1) { + newnum = (framenum - 1 + OV511_NUMFRAMES) % OV511_NUMFRAMES; + if (ov->frame[newnum].grabstate == FRAME_READY) + framenum = newnum; + } else + return 0; + + frame = &ov->frame[framenum]; + + PDEBUG(4, "framenum = %d, width = %d, height = %d", framenum, + frame->width, frame->height); + + frame->grabstate = FRAME_GRABBING; + frame->scanstate = STATE_SCANNING; + frame->snapshot = 0; + + ov->curframe = framenum; + + /* Make sure it's not too big */ + if (frame->width > ov->maxwidth) + frame->width = ov->maxwidth; + + frame->width &= ~7L; /* Multiple of 8 */ + + if (frame->height > ov->maxheight) + frame->height = ov->maxheight; + + frame->height &= ~3L; /* Multiple of 4 */ + + return 0; +} + +/**************************************************************************** + * + * Buffer management + * + ***************************************************************************/ + +/* + * - You must acquire buf_lock before entering this function. + * - Because this code will free any non-null pointer, you must be sure to null + * them if you explicitly free them somewhere else! + */ +static void +ov51x_do_dealloc(struct usb_ov511 *ov) +{ + int i; + PDEBUG(4, "entered"); + + if (ov->fbuf) { + rvfree(ov->fbuf, OV511_NUMFRAMES + * MAX_DATA_SIZE(ov->maxwidth, ov->maxheight)); + ov->fbuf = NULL; + } + + vfree(ov->rawfbuf); + ov->rawfbuf = NULL; + + vfree(ov->tempfbuf); + ov->tempfbuf = NULL; + + for (i = 0; i < OV511_NUMSBUF; i++) { + kfree(ov->sbuf[i].data); + ov->sbuf[i].data = NULL; + } + + for (i = 0; i < OV511_NUMFRAMES; i++) { + ov->frame[i].data = NULL; + ov->frame[i].rawdata = NULL; + ov->frame[i].tempdata = NULL; + if (ov->frame[i].compbuf) { + free_page((unsigned long) ov->frame[i].compbuf); + ov->frame[i].compbuf = NULL; + } + } + + PDEBUG(4, "buffer memory deallocated"); + ov->buf_state = BUF_NOT_ALLOCATED; + PDEBUG(4, "leaving"); +} + +static int +ov51x_alloc(struct usb_ov511 *ov) +{ + int i; + const int w = ov->maxwidth; + const int h = ov->maxheight; + const int data_bufsize = OV511_NUMFRAMES * MAX_DATA_SIZE(w, h); + const int raw_bufsize = OV511_NUMFRAMES * MAX_RAW_DATA_SIZE(w, h); + + PDEBUG(4, "entered"); + mutex_lock(&ov->buf_lock); + + if (ov->buf_state == BUF_ALLOCATED) + goto out; + + ov->fbuf = rvmalloc(data_bufsize); + if (!ov->fbuf) + goto error; + + ov->rawfbuf = vmalloc(raw_bufsize); + if (!ov->rawfbuf) + goto error; + + memset(ov->rawfbuf, 0, raw_bufsize); + + ov->tempfbuf = vmalloc(raw_bufsize); + if (!ov->tempfbuf) + goto error; + + memset(ov->tempfbuf, 0, raw_bufsize); + + for (i = 0; i < OV511_NUMSBUF; i++) { + ov->sbuf[i].data = kmalloc(FRAMES_PER_DESC * + MAX_FRAME_SIZE_PER_DESC, GFP_KERNEL); + if (!ov->sbuf[i].data) + goto error; + + PDEBUG(4, "sbuf[%d] @ %p", i, ov->sbuf[i].data); + } + + for (i = 0; i < OV511_NUMFRAMES; i++) { + ov->frame[i].data = ov->fbuf + i * MAX_DATA_SIZE(w, h); + ov->frame[i].rawdata = ov->rawfbuf + + i * MAX_RAW_DATA_SIZE(w, h); + ov->frame[i].tempdata = ov->tempfbuf + + i * MAX_RAW_DATA_SIZE(w, h); + + ov->frame[i].compbuf = + (unsigned char *) __get_free_page(GFP_KERNEL); + if (!ov->frame[i].compbuf) + goto error; + + PDEBUG(4, "frame[%d] @ %p", i, ov->frame[i].data); + } + + ov->buf_state = BUF_ALLOCATED; +out: + mutex_unlock(&ov->buf_lock); + PDEBUG(4, "leaving"); + return 0; +error: + ov51x_do_dealloc(ov); + mutex_unlock(&ov->buf_lock); + PDEBUG(4, "errored"); + return -ENOMEM; +} + +static void +ov51x_dealloc(struct usb_ov511 *ov) +{ + PDEBUG(4, "entered"); + mutex_lock(&ov->buf_lock); + ov51x_do_dealloc(ov); + mutex_unlock(&ov->buf_lock); + PDEBUG(4, "leaving"); +} + +/**************************************************************************** + * + * V4L 1 API + * + ***************************************************************************/ + +static int +ov51x_v4l1_open(struct inode *inode, struct file *file) +{ + struct video_device *vdev = video_devdata(file); + struct usb_ov511 *ov = video_get_drvdata(vdev); + int err, i; + + PDEBUG(4, "opening"); + + mutex_lock(&ov->lock); + + err = -EBUSY; + if (ov->user) + goto out; + + ov->sub_flag = 0; + + /* In case app doesn't set them... */ + err = ov51x_set_default_params(ov); + if (err < 0) + goto out; + + /* Make sure frames are reset */ + for (i = 0; i < OV511_NUMFRAMES; i++) { + ov->frame[i].grabstate = FRAME_UNUSED; + ov->frame[i].bytes_read = 0; + } + + /* If compression is on, make sure now that a + * decompressor can be loaded */ + if (ov->compress && !ov->decomp_ops) { + err = request_decompressor(ov); + if (err && !dumppix) + goto out; + } + + err = ov51x_alloc(ov); + if (err < 0) + goto out; + + err = ov51x_init_isoc(ov); + if (err) { + ov51x_dealloc(ov); + goto out; + } + + ov->user++; + file->private_data = vdev; + + if (ov->led_policy == LED_AUTO) + ov51x_led_control(ov, 1); + +out: + mutex_unlock(&ov->lock); + return err; +} + +static int +ov51x_v4l1_close(struct inode *inode, struct file *file) +{ + struct video_device *vdev = file->private_data; + struct usb_ov511 *ov = video_get_drvdata(vdev); + + PDEBUG(4, "ov511_close"); + + mutex_lock(&ov->lock); + + ov->user--; + ov51x_stop_isoc(ov); + + if (ov->led_policy == LED_AUTO) + ov51x_led_control(ov, 0); + + if (ov->dev) + ov51x_dealloc(ov); + + mutex_unlock(&ov->lock); + + /* Device unplugged while open. Only a minimum of unregistration is done + * here; the disconnect callback already did the rest. */ + if (!ov->dev) { + mutex_lock(&ov->cbuf_lock); + kfree(ov->cbuf); + ov->cbuf = NULL; + mutex_unlock(&ov->cbuf_lock); + + ov51x_dealloc(ov); + kfree(ov); + ov = NULL; + } + + file->private_data = NULL; + return 0; +} + +/* Do not call this function directly! */ +static int +ov51x_v4l1_ioctl_internal(struct inode *inode, struct file *file, + unsigned int cmd, void *arg) +{ + struct video_device *vdev = file->private_data; + struct usb_ov511 *ov = video_get_drvdata(vdev); + PDEBUG(5, "IOCtl: 0x%X", cmd); + + if (!ov->dev) + return -EIO; + + switch (cmd) { + case VIDIOCGCAP: + { + struct video_capability *b = arg; + + PDEBUG(4, "VIDIOCGCAP"); + + memset(b, 0, sizeof(struct video_capability)); + sprintf(b->name, "%s USB Camera", + symbolic(brglist, ov->bridge)); + b->type = VID_TYPE_CAPTURE | VID_TYPE_SUBCAPTURE; + b->channels = ov->num_inputs; + b->audios = 0; + b->maxwidth = ov->maxwidth; + b->maxheight = ov->maxheight; + b->minwidth = ov->minwidth; + b->minheight = ov->minheight; + + return 0; + } + case VIDIOCGCHAN: + { + struct video_channel *v = arg; + + PDEBUG(4, "VIDIOCGCHAN"); + + if ((unsigned)(v->channel) >= ov->num_inputs) { + err("Invalid channel (%d)", v->channel); + return -EINVAL; + } + + v->norm = ov->norm; + v->type = VIDEO_TYPE_CAMERA; + v->flags = 0; +// v->flags |= (ov->has_decoder) ? VIDEO_VC_NORM : 0; + v->tuners = 0; + decoder_get_input_name(ov, v->channel, v->name); + + return 0; + } + case VIDIOCSCHAN: + { + struct video_channel *v = arg; + int err; + + PDEBUG(4, "VIDIOCSCHAN"); + + /* Make sure it's not a camera */ + if (!ov->has_decoder) { + if (v->channel == 0) + return 0; + else + return -EINVAL; + } + + if (v->norm != VIDEO_MODE_PAL && + v->norm != VIDEO_MODE_NTSC && + v->norm != VIDEO_MODE_SECAM && + v->norm != VIDEO_MODE_AUTO) { + err("Invalid norm (%d)", v->norm); + return -EINVAL; + } + + if ((unsigned)(v->channel) >= ov->num_inputs) { + err("Invalid channel (%d)", v->channel); + return -EINVAL; + } + + err = decoder_set_input(ov, v->channel); + if (err) + return err; + + err = decoder_set_norm(ov, v->norm); + if (err) + return err; + + return 0; + } + case VIDIOCGPICT: + { + struct video_picture *p = arg; + + PDEBUG(4, "VIDIOCGPICT"); + + memset(p, 0, sizeof(struct video_picture)); + if (sensor_get_picture(ov, p)) + return -EIO; + + /* Can we get these from frame[0]? -claudio? */ + p->depth = ov->frame[0].depth; + p->palette = ov->frame[0].format; + + return 0; + } + case VIDIOCSPICT: + { + struct video_picture *p = arg; + int i, rc; + + PDEBUG(4, "VIDIOCSPICT"); + + if (!get_depth(p->palette)) + return -EINVAL; + + if (sensor_set_picture(ov, p)) + return -EIO; + + if (force_palette && p->palette != force_palette) { + info("Palette rejected (%s)", + symbolic(v4l1_plist, p->palette)); + return -EINVAL; + } + + // FIXME: Format should be independent of frames + if (p->palette != ov->frame[0].format) { + PDEBUG(4, "Detected format change"); + + rc = ov51x_wait_frames_inactive(ov); + if (rc) + return rc; + + mode_init_regs(ov, ov->frame[0].width, + ov->frame[0].height, p->palette, ov->sub_flag); + } + + PDEBUG(4, "Setting depth=%d, palette=%s", + p->depth, symbolic(v4l1_plist, p->palette)); + + for (i = 0; i < OV511_NUMFRAMES; i++) { + ov->frame[i].depth = p->depth; + ov->frame[i].format = p->palette; + } + + return 0; + } + case VIDIOCGCAPTURE: + { + int *vf = arg; + + PDEBUG(4, "VIDIOCGCAPTURE"); + + ov->sub_flag = *vf; + return 0; + } + case VIDIOCSCAPTURE: + { + struct video_capture *vc = arg; + + PDEBUG(4, "VIDIOCSCAPTURE"); + + if (vc->flags) + return -EINVAL; + if (vc->decimation) + return -EINVAL; + + vc->x &= ~3L; + vc->y &= ~1L; + vc->y &= ~31L; + + if (vc->width == 0) + vc->width = 32; + + vc->height /= 16; + vc->height *= 16; + if (vc->height == 0) + vc->height = 16; + + ov->subx = vc->x; + ov->suby = vc->y; + ov->subw = vc->width; + ov->subh = vc->height; + + return 0; + } + case VIDIOCSWIN: + { + struct video_window *vw = arg; + int i, rc; + + PDEBUG(4, "VIDIOCSWIN: %dx%d", vw->width, vw->height); + +#if 0 + if (vw->flags) + return -EINVAL; + if (vw->clipcount) + return -EINVAL; + if (vw->height != ov->maxheight) + return -EINVAL; + if (vw->width != ov->maxwidth) + return -EINVAL; +#endif + + rc = ov51x_wait_frames_inactive(ov); + if (rc) + return rc; + + rc = mode_init_regs(ov, vw->width, vw->height, + ov->frame[0].format, ov->sub_flag); + if (rc < 0) + return rc; + + for (i = 0; i < OV511_NUMFRAMES; i++) { + ov->frame[i].width = vw->width; + ov->frame[i].height = vw->height; + } + + return 0; + } + case VIDIOCGWIN: + { + struct video_window *vw = arg; + + memset(vw, 0, sizeof(struct video_window)); + vw->x = 0; /* FIXME */ + vw->y = 0; + vw->width = ov->frame[0].width; + vw->height = ov->frame[0].height; + vw->flags = 30; + + PDEBUG(4, "VIDIOCGWIN: %dx%d", vw->width, vw->height); + + return 0; + } + case VIDIOCGMBUF: + { + struct video_mbuf *vm = arg; + int i; + + PDEBUG(4, "VIDIOCGMBUF"); + + memset(vm, 0, sizeof(struct video_mbuf)); + vm->size = OV511_NUMFRAMES + * MAX_DATA_SIZE(ov->maxwidth, ov->maxheight); + vm->frames = OV511_NUMFRAMES; + + vm->offsets[0] = 0; + for (i = 1; i < OV511_NUMFRAMES; i++) { + vm->offsets[i] = vm->offsets[i-1] + + MAX_DATA_SIZE(ov->maxwidth, ov->maxheight); + } + + return 0; + } + case VIDIOCMCAPTURE: + { + struct video_mmap *vm = arg; + int rc, depth; + unsigned int f = vm->frame; + + PDEBUG(4, "VIDIOCMCAPTURE: frame: %d, %dx%d, %s", f, vm->width, + vm->height, symbolic(v4l1_plist, vm->format)); + + depth = get_depth(vm->format); + if (!depth) { + PDEBUG(2, "VIDIOCMCAPTURE: invalid format (%s)", + symbolic(v4l1_plist, vm->format)); + return -EINVAL; + } + + if (f >= OV511_NUMFRAMES) { + err("VIDIOCMCAPTURE: invalid frame (%d)", f); + return -EINVAL; + } + + if (vm->width > ov->maxwidth + || vm->height > ov->maxheight) { + err("VIDIOCMCAPTURE: requested dimensions too big"); + return -EINVAL; + } + + if (ov->frame[f].grabstate == FRAME_GRABBING) { + PDEBUG(4, "VIDIOCMCAPTURE: already grabbing"); + return -EBUSY; + } + + if (force_palette && (vm->format != force_palette)) { + PDEBUG(2, "palette rejected (%s)", + symbolic(v4l1_plist, vm->format)); + return -EINVAL; + } + + if ((ov->frame[f].width != vm->width) || + (ov->frame[f].height != vm->height) || + (ov->frame[f].format != vm->format) || + (ov->frame[f].sub_flag != ov->sub_flag) || + (ov->frame[f].depth != depth)) { + PDEBUG(4, "VIDIOCMCAPTURE: change in image parameters"); + + rc = ov51x_wait_frames_inactive(ov); + if (rc) + return rc; + + rc = mode_init_regs(ov, vm->width, vm->height, + vm->format, ov->sub_flag); +#if 0 + if (rc < 0) { + PDEBUG(1, "Got error while initializing regs "); + return ret; + } +#endif + ov->frame[f].width = vm->width; + ov->frame[f].height = vm->height; + ov->frame[f].format = vm->format; + ov->frame[f].sub_flag = ov->sub_flag; + ov->frame[f].depth = depth; + } + + /* Mark it as ready */ + ov->frame[f].grabstate = FRAME_READY; + + PDEBUG(4, "VIDIOCMCAPTURE: renewing frame %d", f); + + return ov51x_new_frame(ov, f); + } + case VIDIOCSYNC: + { + unsigned int fnum = *((unsigned int *) arg); + struct ov511_frame *frame; + int rc; + + if (fnum >= OV511_NUMFRAMES) { + err("VIDIOCSYNC: invalid frame (%d)", fnum); + return -EINVAL; + } + + frame = &ov->frame[fnum]; + + PDEBUG(4, "syncing to frame %d, grabstate = %d", fnum, + frame->grabstate); + + switch (frame->grabstate) { + case FRAME_UNUSED: + return -EINVAL; + case FRAME_READY: + case FRAME_GRABBING: + case FRAME_ERROR: +redo: + if (!ov->dev) + return -EIO; + + rc = wait_event_interruptible(frame->wq, + (frame->grabstate == FRAME_DONE) + || (frame->grabstate == FRAME_ERROR)); + + if (rc) + return rc; + + if (frame->grabstate == FRAME_ERROR) { + if ((rc = ov51x_new_frame(ov, fnum)) < 0) + return rc; + goto redo; + } + /* Fall through */ + case FRAME_DONE: + if (ov->snap_enabled && !frame->snapshot) { + if ((rc = ov51x_new_frame(ov, fnum)) < 0) + return rc; + goto redo; + } + + frame->grabstate = FRAME_UNUSED; + + /* Reset the hardware snapshot button */ + /* FIXME - Is this the best place for this? */ + if ((ov->snap_enabled) && (frame->snapshot)) { + frame->snapshot = 0; + ov51x_clear_snapshot(ov); + } + + /* Decompression, format conversion, etc... */ + ov51x_postprocess(ov, frame); + + break; + } /* end switch */ + + return 0; + } + case VIDIOCGFBUF: + { + struct video_buffer *vb = arg; + + PDEBUG(4, "VIDIOCGFBUF"); + + memset(vb, 0, sizeof(struct video_buffer)); + + return 0; + } + case VIDIOCGUNIT: + { + struct video_unit *vu = arg; + + PDEBUG(4, "VIDIOCGUNIT"); + + memset(vu, 0, sizeof(struct video_unit)); + + vu->video = ov->vdev->minor; + vu->vbi = VIDEO_NO_UNIT; + vu->radio = VIDEO_NO_UNIT; + vu->audio = VIDEO_NO_UNIT; + vu->teletext = VIDEO_NO_UNIT; + + return 0; + } + case OV511IOC_WI2C: + { + struct ov511_i2c_struct *w = arg; + + return i2c_w_slave(ov, w->slave, w->reg, w->value, w->mask); + } + case OV511IOC_RI2C: + { + struct ov511_i2c_struct *r = arg; + int rc; + + rc = i2c_r_slave(ov, r->slave, r->reg); + if (rc < 0) + return rc; + + r->value = rc; + return 0; + } + default: + PDEBUG(3, "Unsupported IOCtl: 0x%X", cmd); + return -ENOIOCTLCMD; + } /* end switch */ + + return 0; +} + +static int +ov51x_v4l1_ioctl(struct inode *inode, struct file *file, + unsigned int cmd, unsigned long arg) +{ + struct video_device *vdev = file->private_data; + struct usb_ov511 *ov = video_get_drvdata(vdev); + int rc; + + if (mutex_lock_interruptible(&ov->lock)) + return -EINTR; + + rc = video_usercopy(inode, file, cmd, arg, ov51x_v4l1_ioctl_internal); + + mutex_unlock(&ov->lock); + return rc; +} + +static ssize_t +ov51x_v4l1_read(struct file *file, char __user *buf, size_t cnt, loff_t *ppos) +{ + struct video_device *vdev = file->private_data; + int noblock = file->f_flags&O_NONBLOCK; + unsigned long count = cnt; + struct usb_ov511 *ov = video_get_drvdata(vdev); + int i, rc = 0, frmx = -1; + struct ov511_frame *frame; + + if (mutex_lock_interruptible(&ov->lock)) + return -EINTR; + + PDEBUG(4, "%ld bytes, noblock=%d", count, noblock); + + if (!vdev || !buf) { + rc = -EFAULT; + goto error; + } + + if (!ov->dev) { + rc = -EIO; + goto error; + } + +// FIXME: Only supports two frames + /* See if a frame is completed, then use it. */ + if (ov->frame[0].grabstate >= FRAME_DONE) /* _DONE or _ERROR */ + frmx = 0; + else if (ov->frame[1].grabstate >= FRAME_DONE)/* _DONE or _ERROR */ + frmx = 1; + + /* If nonblocking we return immediately */ + if (noblock && (frmx == -1)) { + rc = -EAGAIN; + goto error; + } + + /* If no FRAME_DONE, look for a FRAME_GRABBING state. */ + /* See if a frame is in process (grabbing), then use it. */ + if (frmx == -1) { + if (ov->frame[0].grabstate == FRAME_GRABBING) + frmx = 0; + else if (ov->frame[1].grabstate == FRAME_GRABBING) + frmx = 1; + } + + /* If no frame is active, start one. */ + if (frmx == -1) { + if ((rc = ov51x_new_frame(ov, frmx = 0))) { + err("read: ov51x_new_frame error"); + goto error; + } + } + + frame = &ov->frame[frmx]; + +restart: + if (!ov->dev) { + rc = -EIO; + goto error; + } + + /* Wait while we're grabbing the image */ + PDEBUG(4, "Waiting image grabbing"); + rc = wait_event_interruptible(frame->wq, + (frame->grabstate == FRAME_DONE) + || (frame->grabstate == FRAME_ERROR)); + + if (rc) + goto error; + + PDEBUG(4, "Got image, frame->grabstate = %d", frame->grabstate); + PDEBUG(4, "bytes_recvd = %d", frame->bytes_recvd); + + if (frame->grabstate == FRAME_ERROR) { + frame->bytes_read = 0; + err("** ick! ** Errored frame %d", ov->curframe); + if (ov51x_new_frame(ov, frmx)) { + err("read: ov51x_new_frame error"); + goto error; + } + goto restart; + } + + + /* Repeat until we get a snapshot frame */ + if (ov->snap_enabled) + PDEBUG(4, "Waiting snapshot frame"); + if (ov->snap_enabled && !frame->snapshot) { + frame->bytes_read = 0; + if ((rc = ov51x_new_frame(ov, frmx))) { + err("read: ov51x_new_frame error"); + goto error; + } + goto restart; + } + + /* Clear the snapshot */ + if (ov->snap_enabled && frame->snapshot) { + frame->snapshot = 0; + ov51x_clear_snapshot(ov); + } + + /* Decompression, format conversion, etc... */ + ov51x_postprocess(ov, frame); + + PDEBUG(4, "frmx=%d, bytes_read=%ld, length=%ld", frmx, + frame->bytes_read, + get_frame_length(frame)); + + /* copy bytes to user space; we allow for partials reads */ +// if ((count + frame->bytes_read) +// > get_frame_length((struct ov511_frame *)frame)) +// count = frame->scanlength - frame->bytes_read; + + /* FIXME - count hardwired to be one frame... */ + count = get_frame_length(frame); + + PDEBUG(4, "Copy to user space: %ld bytes", count); + if ((i = copy_to_user(buf, frame->data + frame->bytes_read, count))) { + PDEBUG(4, "Copy failed! %d bytes not copied", i); + rc = -EFAULT; + goto error; + } + + frame->bytes_read += count; + PDEBUG(4, "{copy} count used=%ld, new bytes_read=%ld", + count, frame->bytes_read); + + /* If all data have been read... */ + if (frame->bytes_read + >= get_frame_length(frame)) { + frame->bytes_read = 0; + +// FIXME: Only supports two frames + /* Mark it as available to be used again. */ + ov->frame[frmx].grabstate = FRAME_UNUSED; + if ((rc = ov51x_new_frame(ov, !frmx))) { + err("ov51x_new_frame returned error"); + goto error; + } + } + + PDEBUG(4, "read finished, returning %ld (sweet)", count); + + mutex_unlock(&ov->lock); + return count; + +error: + mutex_unlock(&ov->lock); + return rc; +} + +static int +ov51x_v4l1_mmap(struct file *file, struct vm_area_struct *vma) +{ + struct video_device *vdev = file->private_data; + unsigned long start = vma->vm_start; + unsigned long size = vma->vm_end - vma->vm_start; + struct usb_ov511 *ov = video_get_drvdata(vdev); + unsigned long page, pos; + + if (ov->dev == NULL) + return -EIO; + + PDEBUG(4, "mmap: %ld (%lX) bytes", size, size); + + if (size > (((OV511_NUMFRAMES + * MAX_DATA_SIZE(ov->maxwidth, ov->maxheight) + + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1)))) + return -EINVAL; + + if (mutex_lock_interruptible(&ov->lock)) + return -EINTR; + + pos = (unsigned long)ov->fbuf; + while (size > 0) { + page = vmalloc_to_pfn((void *)pos); + if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) { + mutex_unlock(&ov->lock); + return -EAGAIN; + } + start += PAGE_SIZE; + pos += PAGE_SIZE; + if (size > PAGE_SIZE) + size -= PAGE_SIZE; + else + size = 0; + } + + mutex_unlock(&ov->lock); + return 0; +} + +static struct file_operations ov511_fops = { + .owner = THIS_MODULE, + .open = ov51x_v4l1_open, + .release = ov51x_v4l1_close, + .read = ov51x_v4l1_read, + .mmap = ov51x_v4l1_mmap, + .ioctl = ov51x_v4l1_ioctl, + .compat_ioctl = v4l_compat_ioctl32, + .llseek = no_llseek, +}; + +static struct video_device vdev_template = { + .owner = THIS_MODULE, + .name = "OV511 USB Camera", + .type = VID_TYPE_CAPTURE, + .hardware = VID_HARDWARE_OV511, + .fops = &ov511_fops, + .release = video_device_release, + .minor = -1, +}; + +/**************************************************************************** + * + * OV511 and sensor configuration + * + ***************************************************************************/ + +/* This initializes the OV7610, OV7620, or OV76BE sensor. The OV76BE uses + * the same register settings as the OV7610, since they are very similar. + */ +static int +ov7xx0_configure(struct usb_ov511 *ov) +{ + int i, success; + int rc; + + /* Lawrence Glaister <lg@jfm.bc.ca> reports: + * + * Register 0x0f in the 7610 has the following effects: + * + * 0x85 (AEC method 1): Best overall, good contrast range + * 0x45 (AEC method 2): Very overexposed + * 0xa5 (spec sheet default): Ok, but the black level is + * shifted resulting in loss of contrast + * 0x05 (old driver setting): very overexposed, too much + * contrast + */ + static struct ov511_regvals aRegvalsNorm7610[] = { + { OV511_I2C_BUS, 0x10, 0xff }, + { OV511_I2C_BUS, 0x16, 0x06 }, + { OV511_I2C_BUS, 0x28, 0x24 }, + { OV511_I2C_BUS, 0x2b, 0xac }, + { OV511_I2C_BUS, 0x12, 0x00 }, + { OV511_I2C_BUS, 0x38, 0x81 }, + { OV511_I2C_BUS, 0x28, 0x24 }, /* 0c */ + { OV511_I2C_BUS, 0x0f, 0x85 }, /* lg's setting */ + { OV511_I2C_BUS, 0x15, 0x01 }, + { OV511_I2C_BUS, 0x20, 0x1c }, + { OV511_I2C_BUS, 0x23, 0x2a }, + { OV511_I2C_BUS, 0x24, 0x10 }, + { OV511_I2C_BUS, 0x25, 0x8a }, + { OV511_I2C_BUS, 0x26, 0xa2 }, + { OV511_I2C_BUS, 0x27, 0xc2 }, + { OV511_I2C_BUS, 0x2a, 0x04 }, + { OV511_I2C_BUS, 0x2c, 0xfe }, + { OV511_I2C_BUS, 0x2d, 0x93 }, + { OV511_I2C_BUS, 0x30, 0x71 }, + { OV511_I2C_BUS, 0x31, 0x60 }, + { OV511_I2C_BUS, 0x32, 0x26 }, + { OV511_I2C_BUS, 0x33, 0x20 }, + { OV511_I2C_BUS, 0x34, 0x48 }, + { OV511_I2C_BUS, 0x12, 0x24 }, + { OV511_I2C_BUS, 0x11, 0x01 }, + { OV511_I2C_BUS, 0x0c, 0x24 }, + { OV511_I2C_BUS, 0x0d, 0x24 }, + { OV511_DONE_BUS, 0x0, 0x00 }, + }; + + static struct ov511_regvals aRegvalsNorm7620[] = { + { OV511_I2C_BUS, 0x00, 0x00 }, + { OV511_I2C_BUS, 0x01, 0x80 }, + { OV511_I2C_BUS, 0x02, 0x80 }, + { OV511_I2C_BUS, 0x03, 0xc0 }, + { OV511_I2C_BUS, 0x06, 0x60 }, + { OV511_I2C_BUS, 0x07, 0x00 }, + { OV511_I2C_BUS, 0x0c, 0x24 }, + { OV511_I2C_BUS, 0x0c, 0x24 }, + { OV511_I2C_BUS, 0x0d, 0x24 }, + { OV511_I2C_BUS, 0x11, 0x01 }, + { OV511_I2C_BUS, 0x12, 0x24 }, + { OV511_I2C_BUS, 0x13, 0x01 }, + { OV511_I2C_BUS, 0x14, 0x84 }, + { OV511_I2C_BUS, 0x15, 0x01 }, + { OV511_I2C_BUS, 0x16, 0x03 }, + { OV511_I2C_BUS, 0x17, 0x2f }, + { OV511_I2C_BUS, 0x18, 0xcf }, + { OV511_I2C_BUS, 0x19, 0x06 }, + { OV511_I2C_BUS, 0x1a, 0xf5 }, + { OV511_I2C_BUS, 0x1b, 0x00 }, + { OV511_I2C_BUS, 0x20, 0x18 }, + { OV511_I2C_BUS, 0x21, 0x80 }, + { OV511_I2C_BUS, 0x22, 0x80 }, + { OV511_I2C_BUS, 0x23, 0x00 }, + { OV511_I2C_BUS, 0x26, 0xa2 }, + { OV511_I2C_BUS, 0x27, 0xea }, + { OV511_I2C_BUS, 0x28, 0x20 }, + { OV511_I2C_BUS, 0x29, 0x00 }, + { OV511_I2C_BUS, 0x2a, 0x10 }, + { OV511_I2C_BUS, 0x2b, 0x00 }, + { OV511_I2C_BUS, 0x2c, 0x88 }, + { OV511_I2C_BUS, 0x2d, 0x91 }, + { OV511_I2C_BUS, 0x2e, 0x80 }, + { OV511_I2C_BUS, 0x2f, 0x44 }, + { OV511_I2C_BUS, 0x60, 0x27 }, + { OV511_I2C_BUS, 0x61, 0x02 }, + { OV511_I2C_BUS, 0x62, 0x5f }, + { OV511_I2C_BUS, 0x63, 0xd5 }, + { OV511_I2C_BUS, 0x64, 0x57 }, + { OV511_I2C_BUS, 0x65, 0x83 }, + { OV511_I2C_BUS, 0x66, 0x55 }, + { OV511_I2C_BUS, 0x67, 0x92 }, + { OV511_I2C_BUS, 0x68, 0xcf }, + { OV511_I2C_BUS, 0x69, 0x76 }, + { OV511_I2C_BUS, 0x6a, 0x22 }, + { OV511_I2C_BUS, 0x6b, 0x00 }, + { OV511_I2C_BUS, 0x6c, 0x02 }, + { OV511_I2C_BUS, 0x6d, 0x44 }, + { OV511_I2C_BUS, 0x6e, 0x80 }, + { OV511_I2C_BUS, 0x6f, 0x1d }, + { OV511_I2C_BUS, 0x70, 0x8b }, + { OV511_I2C_BUS, 0x71, 0x00 }, + { OV511_I2C_BUS, 0x72, 0x14 }, + { OV511_I2C_BUS, 0x73, 0x54 }, + { OV511_I2C_BUS, 0x74, 0x00 }, + { OV511_I2C_BUS, 0x75, 0x8e }, + { OV511_I2C_BUS, 0x76, 0x00 }, + { OV511_I2C_BUS, 0x77, 0xff }, + { OV511_I2C_BUS, 0x78, 0x80 }, + { OV511_I2C_BUS, 0x79, 0x80 }, + { OV511_I2C_BUS, 0x7a, 0x80 }, + { OV511_I2C_BUS, 0x7b, 0xe2 }, + { OV511_I2C_BUS, 0x7c, 0x00 }, + { OV511_DONE_BUS, 0x0, 0x00 }, + }; + + PDEBUG(4, "starting configuration"); + + /* This looks redundant, but is necessary for WebCam 3 */ + ov->primary_i2c_slave = OV7xx0_SID; + if (ov51x_set_slave_ids(ov, OV7xx0_SID) < 0) + return -1; + + if (init_ov_sensor(ov) >= 0) { + PDEBUG(1, "OV7xx0 sensor initalized (method 1)"); + } else { + /* Reset the 76xx */ + if (i2c_w(ov, 0x12, 0x80) < 0) + return -1; + + /* Wait for it to initialize */ + msleep(150); + + i = 0; + success = 0; + while (i <= i2c_detect_tries) { + if ((i2c_r(ov, OV7610_REG_ID_HIGH) == 0x7F) && + (i2c_r(ov, OV7610_REG_ID_LOW) == 0xA2)) { + success = 1; + break; + } else { + i++; + } + } + +// Was (i == i2c_detect_tries) previously. This obviously used to always report +// success. Whether anyone actually depended on that bug is unknown + if ((i >= i2c_detect_tries) && (success == 0)) { + err("Failed to read sensor ID. You might not have an"); + err("OV7610/20, or it may be not responding. Report"); + err("this to " EMAIL); + err("This is only a warning. You can attempt to use"); + err("your camera anyway"); +// Only issue a warning for now +// return -1; + } else { + PDEBUG(1, "OV7xx0 initialized (method 2, %dx)", i+1); + } + } + + /* Detect sensor (sub)type */ + rc = i2c_r(ov, OV7610_REG_COM_I); + + if (rc < 0) { + err("Error detecting sensor type"); + return -1; + } else if ((rc & 3) == 3) { + info("Sensor is an OV7610"); + ov->sensor = SEN_OV7610; + } else if ((rc & 3) == 1) { + /* I don't know what's different about the 76BE yet. */ + if (i2c_r(ov, 0x15) & 1) + info("Sensor is an OV7620AE"); + else + info("Sensor is an OV76BE"); + + /* OV511+ will return all zero isoc data unless we + * configure the sensor as a 7620. Someone needs to + * find the exact reg. setting that causes this. */ + if (ov->bridge == BRG_OV511PLUS) { + info("Enabling 511+/7620AE workaround"); + ov->sensor = SEN_OV7620; + } else { + ov->sensor = SEN_OV76BE; + } + } else if ((rc & 3) == 0) { + info("Sensor is an OV7620"); + ov->sensor = SEN_OV7620; + } else { + err("Unknown image sensor version: %d", rc & 3); + return -1; + } + + if (ov->sensor == SEN_OV7620) { + PDEBUG(4, "Writing 7620 registers"); + if (write_regvals(ov, aRegvalsNorm7620)) + return -1; + } else { + PDEBUG(4, "Writing 7610 registers"); + if (write_regvals(ov, aRegvalsNorm7610)) + return -1; + } + + /* Set sensor-specific vars */ + ov->maxwidth = 640; + ov->maxheight = 480; + ov->minwidth = 64; + ov->minheight = 48; + + // FIXME: These do not match the actual settings yet + ov->brightness = 0x80 << 8; + ov->contrast = 0x80 << 8; + ov->colour = 0x80 << 8; + ov->hue = 0x80 << 8; + + return 0; +} + +/* This initializes the OV6620, OV6630, OV6630AE, or OV6630AF sensor. */ +static int +ov6xx0_configure(struct usb_ov511 *ov) +{ + int rc; + + static struct ov511_regvals aRegvalsNorm6x20[] = { + { OV511_I2C_BUS, 0x12, 0x80 }, /* reset */ + { OV511_I2C_BUS, 0x11, 0x01 }, + { OV511_I2C_BUS, 0x03, 0x60 }, + { OV511_I2C_BUS, 0x05, 0x7f }, /* For when autoadjust is off */ + { OV511_I2C_BUS, 0x07, 0xa8 }, + /* The ratio of 0x0c and 0x0d controls the white point */ + { OV511_I2C_BUS, 0x0c, 0x24 }, + { OV511_I2C_BUS, 0x0d, 0x24 }, + { OV511_I2C_BUS, 0x0f, 0x15 }, /* COMS */ + { OV511_I2C_BUS, 0x10, 0x75 }, /* AEC Exposure time */ + { OV511_I2C_BUS, 0x12, 0x24 }, /* Enable AGC */ + { OV511_I2C_BUS, 0x14, 0x04 }, + /* 0x16: 0x06 helps frame stability with moving objects */ + { OV511_I2C_BUS, 0x16, 0x06 }, +// { OV511_I2C_BUS, 0x20, 0x30 }, /* Aperture correction enable */ + { OV511_I2C_BUS, 0x26, 0xb2 }, /* BLC enable */ + /* 0x28: 0x05 Selects RGB format if RGB on */ + { OV511_I2C_BUS, 0x28, 0x05 }, + { OV511_I2C_BUS, 0x2a, 0x04 }, /* Disable framerate adjust */ +// { OV511_I2C_BUS, 0x2b, 0xac }, /* Framerate; Set 2a[7] first */ + { OV511_I2C_BUS, 0x2d, 0x99 }, + { OV511_I2C_BUS, 0x33, 0xa0 }, /* Color Processing Parameter */ + { OV511_I2C_BUS, 0x34, 0xd2 }, /* Max A/D range */ + { OV511_I2C_BUS, 0x38, 0x8b }, + { OV511_I2C_BUS, 0x39, 0x40 }, + + { OV511_I2C_BUS, 0x3c, 0x39 }, /* Enable AEC mode changing */ + { OV511_I2C_BUS, 0x3c, 0x3c }, /* Change AEC mode */ + { OV511_I2C_BUS, 0x3c, 0x24 }, /* Disable AEC mode changing */ + + { OV511_I2C_BUS, 0x3d, 0x80 }, + /* These next two registers (0x4a, 0x4b) are undocumented. They + * control the color balance */ + { OV511_I2C_BUS, 0x4a, 0x80 }, + { OV511_I2C_BUS, 0x4b, 0x80 }, + { OV511_I2C_BUS, 0x4d, 0xd2 }, /* This reduces noise a bit */ + { OV511_I2C_BUS, 0x4e, 0xc1 }, + { OV511_I2C_BUS, 0x4f, 0x04 }, +// Do 50-53 have any effect? +// Toggle 0x12[2] off and on here? + { OV511_DONE_BUS, 0x0, 0x00 }, /* END MARKER */ + }; + + static struct ov511_regvals aRegvalsNorm6x30[] = { + /*OK*/ { OV511_I2C_BUS, 0x12, 0x80 }, /* reset */ + { OV511_I2C_BUS, 0x11, 0x00 }, + /*OK*/ { OV511_I2C_BUS, 0x03, 0x60 }, + /*0A?*/ { OV511_I2C_BUS, 0x05, 0x7f }, /* For when autoadjust is off */ + { OV511_I2C_BUS, 0x07, 0xa8 }, + /* The ratio of 0x0c and 0x0d controls the white point */ + /*OK*/ { OV511_I2C_BUS, 0x0c, 0x24 }, + /*OK*/ { OV511_I2C_BUS, 0x0d, 0x24 }, + /*A*/ { OV511_I2C_BUS, 0x0e, 0x20 }, +// /*04?*/ { OV511_I2C_BUS, 0x14, 0x80 }, + { OV511_I2C_BUS, 0x16, 0x03 }, +// /*OK*/ { OV511_I2C_BUS, 0x20, 0x30 }, /* Aperture correction enable */ + // 21 & 22? The suggested values look wrong. Go with default + /*A*/ { OV511_I2C_BUS, 0x23, 0xc0 }, + /*A*/ { OV511_I2C_BUS, 0x25, 0x9a }, // Check this against default +// /*OK*/ { OV511_I2C_BUS, 0x26, 0xb2 }, /* BLC enable */ + + /* 0x28: 0x05 Selects RGB format if RGB on */ +// /*04?*/ { OV511_I2C_BUS, 0x28, 0x05 }, +// /*04?*/ { OV511_I2C_BUS, 0x28, 0x45 }, // DEBUG: Tristate UV bus + + /*OK*/ { OV511_I2C_BUS, 0x2a, 0x04 }, /* Disable framerate adjust */ +// /*OK*/ { OV511_I2C_BUS, 0x2b, 0xac }, /* Framerate; Set 2a[7] first */ + { OV511_I2C_BUS, 0x2d, 0x99 }, +// /*A*/ { OV511_I2C_BUS, 0x33, 0x26 }, // Reserved bits on 6620 +// /*d2?*/ { OV511_I2C_BUS, 0x34, 0x03 }, /* Max A/D range */ +// /*8b?*/ { OV511_I2C_BUS, 0x38, 0x83 }, +// /*40?*/ { OV511_I2C_BUS, 0x39, 0xc0 }, // 6630 adds bit 7 +// { OV511_I2C_BUS, 0x3c, 0x39 }, /* Enable AEC mode changing */ +// { OV511_I2C_BUS, 0x3c, 0x3c }, /* Change AEC mode */ +// { OV511_I2C_BUS, 0x3c, 0x24 }, /* Disable AEC mode changing */ + { OV511_I2C_BUS, 0x3d, 0x80 }, +// /*A*/ { OV511_I2C_BUS, 0x3f, 0x0e }, + + /* These next two registers (0x4a, 0x4b) are undocumented. They + * control the color balance */ +// /*OK?*/ { OV511_I2C_BUS, 0x4a, 0x80 }, // Check these +// /*OK?*/ { OV511_I2C_BUS, 0x4b, 0x80 }, + { OV511_I2C_BUS, 0x4d, 0x10 }, /* U = 0.563u, V = 0.714v */ + /*c1?*/ { OV511_I2C_BUS, 0x4e, 0x40 }, + + /* UV average mode, color killer: strongest */ + { OV511_I2C_BUS, 0x4f, 0x07 }, + + { OV511_I2C_BUS, 0x54, 0x23 }, /* Max AGC gain: 18dB */ + { OV511_I2C_BUS, 0x57, 0x81 }, /* (default) */ + { OV511_I2C_BUS, 0x59, 0x01 }, /* AGC dark current comp: +1 */ + { OV511_I2C_BUS, 0x5a, 0x2c }, /* (undocumented) */ + { OV511_I2C_BUS, 0x5b, 0x0f }, /* AWB chrominance levels */ +// { OV511_I2C_BUS, 0x5c, 0x10 }, + { OV511_DONE_BUS, 0x0, 0x00 }, /* END MARKER */ + }; + + PDEBUG(4, "starting sensor configuration"); + + if (init_ov_sensor(ov) < 0) { + err("Failed to read sensor ID. You might not have an OV6xx0,"); + err("or it may be not responding. Report this to " EMAIL); + return -1; + } else { + PDEBUG(1, "OV6xx0 sensor detected"); + } + + /* Detect sensor (sub)type */ + rc = i2c_r(ov, OV7610_REG_COM_I); + + if (rc < 0) { + err("Error detecting sensor type"); + return -1; + } + + if ((rc & 3) == 0) { + ov->sensor = SEN_OV6630; + info("Sensor is an OV6630"); + } else if ((rc & 3) == 1) { + ov->sensor = SEN_OV6620; + info("Sensor is an OV6620"); + } else if ((rc & 3) == 2) { + ov->sensor = SEN_OV6630; + info("Sensor is an OV6630AE"); + } else if ((rc & 3) == 3) { + ov->sensor = SEN_OV6630; + info("Sensor is an OV6630AF"); + } + + /* Set sensor-specific vars */ + ov->maxwidth = 352; + ov->maxheight = 288; + ov->minwidth = 64; + ov->minheight = 48; + + // FIXME: These do not match the actual settings yet + ov->brightness = 0x80 << 8; + ov->contrast = 0x80 << 8; + ov->colour = 0x80 << 8; + ov->hue = 0x80 << 8; + + if (ov->sensor == SEN_OV6620) { + PDEBUG(4, "Writing 6x20 registers"); + if (write_regvals(ov, aRegvalsNorm6x20)) + return -1; + } else { + PDEBUG(4, "Writing 6x30 registers"); + if (write_regvals(ov, aRegvalsNorm6x30)) + return -1; + } + + return 0; +} + +/* This initializes the KS0127 and KS0127B video decoders. */ +static int +ks0127_configure(struct usb_ov511 *ov) +{ + int rc; + +// FIXME: I don't know how to sync or reset it yet +#if 0 + if (ov51x_init_ks_sensor(ov) < 0) { + err("Failed to initialize the KS0127"); + return -1; + } else { + PDEBUG(1, "KS012x(B) sensor detected"); + } +#endif + + /* Detect decoder subtype */ + rc = i2c_r(ov, 0x00); + if (rc < 0) { + err("Error detecting sensor type"); + return -1; + } else if (rc & 0x08) { + rc = i2c_r(ov, 0x3d); + if (rc < 0) { + err("Error detecting sensor type"); + return -1; + } else if ((rc & 0x0f) == 0) { + info("Sensor is a KS0127"); + ov->sensor = SEN_KS0127; + } else if ((rc & 0x0f) == 9) { + info("Sensor is a KS0127B Rev. A"); + ov->sensor = SEN_KS0127B; + } + } else { + err("Error: Sensor is an unsupported KS0122"); + return -1; + } + + /* Set sensor-specific vars */ + ov->maxwidth = 640; + ov->maxheight = 480; + ov->minwidth = 64; + ov->minheight = 48; + + // FIXME: These do not match the actual settings yet + ov->brightness = 0x80 << 8; + ov->contrast = 0x80 << 8; + ov->colour = 0x80 << 8; + ov->hue = 0x80 << 8; + + /* This device is not supported yet. Bail out now... */ + err("This sensor is not supported yet."); + return -1; + + return 0; +} + +/* This initializes the SAA7111A video decoder. */ +static int +saa7111a_configure(struct usb_ov511 *ov) +{ + int rc; + + /* Since there is no register reset command, all registers must be + * written, otherwise gives erratic results */ + static struct ov511_regvals aRegvalsNormSAA7111A[] = { + { OV511_I2C_BUS, 0x06, 0xce }, + { OV511_I2C_BUS, 0x07, 0x00 }, + { OV511_I2C_BUS, 0x10, 0x44 }, /* YUV422, 240/286 lines */ + { OV511_I2C_BUS, 0x0e, 0x01 }, /* NTSC M or PAL BGHI */ + { OV511_I2C_BUS, 0x00, 0x00 }, + { OV511_I2C_BUS, 0x01, 0x00 }, + { OV511_I2C_BUS, 0x03, 0x23 }, + { OV511_I2C_BUS, 0x04, 0x00 }, + { OV511_I2C_BUS, 0x05, 0x00 }, + { OV511_I2C_BUS, 0x08, 0xc8 }, /* Auto field freq */ + { OV511_I2C_BUS, 0x09, 0x01 }, /* Chrom. trap off, APER=0.25 */ + { OV511_I2C_BUS, 0x0a, 0x80 }, /* BRIG=128 */ + { OV511_I2C_BUS, 0x0b, 0x40 }, /* CONT=1.0 */ + { OV511_I2C_BUS, 0x0c, 0x40 }, /* SATN=1.0 */ + { OV511_I2C_BUS, 0x0d, 0x00 }, /* HUE=0 */ + { OV511_I2C_BUS, 0x0f, 0x00 }, + { OV511_I2C_BUS, 0x11, 0x0c }, + { OV511_I2C_BUS, 0x12, 0x00 }, + { OV511_I2C_BUS, 0x13, 0x00 }, + { OV511_I2C_BUS, 0x14, 0x00 }, + { OV511_I2C_BUS, 0x15, 0x00 }, + { OV511_I2C_BUS, 0x16, 0x00 }, + { OV511_I2C_BUS, 0x17, 0x00 }, + { OV511_I2C_BUS, 0x02, 0xc0 }, /* Composite input 0 */ + { OV511_DONE_BUS, 0x0, 0x00 }, + }; + +// FIXME: I don't know how to sync or reset it yet +#if 0 + if (ov51x_init_saa_sensor(ov) < 0) { + err("Failed to initialize the SAA7111A"); + return -1; + } else { + PDEBUG(1, "SAA7111A sensor detected"); + } +#endif + + /* 640x480 not supported with PAL */ + if (ov->pal) { + ov->maxwidth = 320; + ov->maxheight = 240; /* Even field only */ + } else { + ov->maxwidth = 640; + ov->maxheight = 480; /* Even/Odd fields */ + } + + ov->minwidth = 320; + ov->minheight = 240; /* Even field only */ + + ov->has_decoder = 1; + ov->num_inputs = 8; + ov->norm = VIDEO_MODE_AUTO; + ov->stop_during_set = 0; /* Decoder guarantees stable image */ + + /* Decoder doesn't change these values, so we use these instead of + * acutally reading the registers (which doesn't work) */ + ov->brightness = 0x80 << 8; + ov->contrast = 0x40 << 9; + ov->colour = 0x40 << 9; + ov->hue = 32768; + + PDEBUG(4, "Writing SAA7111A registers"); + if (write_regvals(ov, aRegvalsNormSAA7111A)) + return -1; + + /* Detect version of decoder. This must be done after writing the + * initial regs or the decoder will lock up. */ + rc = i2c_r(ov, 0x00); + + if (rc < 0) { + err("Error detecting sensor version"); + return -1; + } else { + info("Sensor is an SAA7111A (version 0x%x)", rc); + ov->sensor = SEN_SAA7111A; + } + + // FIXME: Fix this for OV518(+) + /* Latch to negative edge of clock. Otherwise, we get incorrect + * colors and jitter in the digital signal. */ + if (ov->bclass == BCL_OV511) + reg_w(ov, 0x11, 0x00); + else + warn("SAA7111A not yet supported with OV518/OV518+"); + + return 0; +} + +/* This initializes the OV511/OV511+ and the sensor */ +static int +ov511_configure(struct usb_ov511 *ov) +{ + static struct ov511_regvals aRegvalsInit511[] = { + { OV511_REG_BUS, R51x_SYS_RESET, 0x7f }, + { OV511_REG_BUS, R51x_SYS_INIT, 0x01 }, + { OV511_REG_BUS, R51x_SYS_RESET, 0x7f }, + { OV511_REG_BUS, R51x_SYS_INIT, 0x01 }, + { OV511_REG_BUS, R51x_SYS_RESET, 0x3f }, + { OV511_REG_BUS, R51x_SYS_INIT, 0x01 }, + { OV511_REG_BUS, R51x_SYS_RESET, 0x3d }, + { OV511_DONE_BUS, 0x0, 0x00}, + }; + + static struct ov511_regvals aRegvalsNorm511[] = { + { OV511_REG_BUS, R511_DRAM_FLOW_CTL, 0x01 }, + { OV511_REG_BUS, R51x_SYS_SNAP, 0x00 }, + { OV511_REG_BUS, R51x_SYS_SNAP, 0x02 }, + { OV511_REG_BUS, R51x_SYS_SNAP, 0x00 }, + { OV511_REG_BUS, R511_FIFO_OPTS, 0x1f }, + { OV511_REG_BUS, R511_COMP_EN, 0x00 }, + { OV511_REG_BUS, R511_COMP_LUT_EN, 0x03 }, + { OV511_DONE_BUS, 0x0, 0x00 }, + }; + + static struct ov511_regvals aRegvalsNorm511Plus[] = { + { OV511_REG_BUS, R511_DRAM_FLOW_CTL, 0xff }, + { OV511_REG_BUS, R51x_SYS_SNAP, 0x00 }, + { OV511_REG_BUS, R51x_SYS_SNAP, 0x02 }, + { OV511_REG_BUS, R51x_SYS_SNAP, 0x00 }, + { OV511_REG_BUS, R511_FIFO_OPTS, 0xff }, + { OV511_REG_BUS, R511_COMP_EN, 0x00 }, + { OV511_REG_BUS, R511_COMP_LUT_EN, 0x03 }, + { OV511_DONE_BUS, 0x0, 0x00 }, + }; + + PDEBUG(4, ""); + + ov->customid = reg_r(ov, R511_SYS_CUST_ID); + if (ov->customid < 0) { + err("Unable to read camera bridge registers"); + goto error; + } + + PDEBUG (1, "CustomID = %d", ov->customid); + ov->desc = symbolic(camlist, ov->customid); + info("model: %s", ov->desc); + + if (0 == strcmp(ov->desc, NOT_DEFINED_STR)) { + err("Camera type (%d) not recognized", ov->customid); + err("Please notify " EMAIL " of the name,"); + err("manufacturer, model, and this number of your camera."); + err("Also include the output of the detection process."); + } + + if (ov->customid == 70) /* USB Life TV (PAL/SECAM) */ + ov->pal = 1; + + if (write_regvals(ov, aRegvalsInit511)) + goto error; + + if (ov->led_policy == LED_OFF || ov->led_policy == LED_AUTO) + ov51x_led_control(ov, 0); + + /* The OV511+ has undocumented bits in the flow control register. + * Setting it to 0xff fixes the corruption with moving objects. */ + if (ov->bridge == BRG_OV511) { + if (write_regvals(ov, aRegvalsNorm511)) + goto error; + } else if (ov->bridge == BRG_OV511PLUS) { + if (write_regvals(ov, aRegvalsNorm511Plus)) + goto error; + } else { + err("Invalid bridge"); + } + + if (ov511_init_compression(ov)) + goto error; + + ov->packet_numbering = 1; + ov511_set_packet_size(ov, 0); + + ov->snap_enabled = snapshot; + + /* Test for 7xx0 */ + PDEBUG(3, "Testing for 0V7xx0"); + ov->primary_i2c_slave = OV7xx0_SID; + if (ov51x_set_slave_ids(ov, OV7xx0_SID) < 0) + goto error; + + if (i2c_w(ov, 0x12, 0x80) < 0) { + /* Test for 6xx0 */ + PDEBUG(3, "Testing for 0V6xx0"); + ov->primary_i2c_slave = OV6xx0_SID; + if (ov51x_set_slave_ids(ov, OV6xx0_SID) < 0) + goto error; + + if (i2c_w(ov, 0x12, 0x80) < 0) { + /* Test for 8xx0 */ + PDEBUG(3, "Testing for 0V8xx0"); + ov->primary_i2c_slave = OV8xx0_SID; + if (ov51x_set_slave_ids(ov, OV8xx0_SID) < 0) + goto error; + + if (i2c_w(ov, 0x12, 0x80) < 0) { + /* Test for SAA7111A */ + PDEBUG(3, "Testing for SAA7111A"); + ov->primary_i2c_slave = SAA7111A_SID; + if (ov51x_set_slave_ids(ov, SAA7111A_SID) < 0) + goto error; + + if (i2c_w(ov, 0x0d, 0x00) < 0) { + /* Test for KS0127 */ + PDEBUG(3, "Testing for KS0127"); + ov->primary_i2c_slave = KS0127_SID; + if (ov51x_set_slave_ids(ov, KS0127_SID) < 0) + goto error; + + if (i2c_w(ov, 0x10, 0x00) < 0) { + err("Can't determine sensor slave IDs"); + goto error; + } else { + if (ks0127_configure(ov) < 0) { + err("Failed to configure KS0127"); + goto error; + } + } + } else { + if (saa7111a_configure(ov) < 0) { + err("Failed to configure SAA7111A"); + goto error; + } + } + } else { + err("Detected unsupported OV8xx0 sensor"); + goto error; + } + } else { + if (ov6xx0_configure(ov) < 0) { + err("Failed to configure OV6xx0"); + goto error; + } + } + } else { + if (ov7xx0_configure(ov) < 0) { + err("Failed to configure OV7xx0"); + goto error; + } + } + + return 0; + +error: + err("OV511 Config failed"); + + return -EBUSY; +} + +/* This initializes the OV518/OV518+ and the sensor */ +static int +ov518_configure(struct usb_ov511 *ov) +{ + /* For 518 and 518+ */ + static struct ov511_regvals aRegvalsInit518[] = { + { OV511_REG_BUS, R51x_SYS_RESET, 0x40 }, + { OV511_REG_BUS, R51x_SYS_INIT, 0xe1 }, + { OV511_REG_BUS, R51x_SYS_RESET, 0x3e }, + { OV511_REG_BUS, R51x_SYS_INIT, 0xe1 }, + { OV511_REG_BUS, R51x_SYS_RESET, 0x00 }, + { OV511_REG_BUS, R51x_SYS_INIT, 0xe1 }, + { OV511_REG_BUS, 0x46, 0x00 }, + { OV511_REG_BUS, 0x5d, 0x03 }, + { OV511_DONE_BUS, 0x0, 0x00}, + }; + + static struct ov511_regvals aRegvalsNorm518[] = { + { OV511_REG_BUS, R51x_SYS_SNAP, 0x02 }, /* Reset */ + { OV511_REG_BUS, R51x_SYS_SNAP, 0x01 }, /* Enable */ + { OV511_REG_BUS, 0x31, 0x0f }, + { OV511_REG_BUS, 0x5d, 0x03 }, + { OV511_REG_BUS, 0x24, 0x9f }, + { OV511_REG_BUS, 0x25, 0x90 }, + { OV511_REG_BUS, 0x20, 0x00 }, + { OV511_REG_BUS, 0x51, 0x04 }, + { OV511_REG_BUS, 0x71, 0x19 }, + { OV511_DONE_BUS, 0x0, 0x00 }, + }; + + static struct ov511_regvals aRegvalsNorm518Plus[] = { + { OV511_REG_BUS, R51x_SYS_SNAP, 0x02 }, /* Reset */ + { OV511_REG_BUS, R51x_SYS_SNAP, 0x01 }, /* Enable */ + { OV511_REG_BUS, 0x31, 0x0f }, + { OV511_REG_BUS, 0x5d, 0x03 }, + { OV511_REG_BUS, 0x24, 0x9f }, + { OV511_REG_BUS, 0x25, 0x90 }, + { OV511_REG_BUS, 0x20, 0x60 }, + { OV511_REG_BUS, 0x51, 0x02 }, + { OV511_REG_BUS, 0x71, 0x19 }, + { OV511_REG_BUS, 0x40, 0xff }, + { OV511_REG_BUS, 0x41, 0x42 }, + { OV511_REG_BUS, 0x46, 0x00 }, + { OV511_REG_BUS, 0x33, 0x04 }, + { OV511_REG_BUS, 0x21, 0x19 }, + { OV511_REG_BUS, 0x3f, 0x10 }, + { OV511_DONE_BUS, 0x0, 0x00 }, + }; + + PDEBUG(4, ""); + + /* First 5 bits of custom ID reg are a revision ID on OV518 */ + info("Device revision %d", 0x1F & reg_r(ov, R511_SYS_CUST_ID)); + + /* Give it the default description */ + ov->desc = symbolic(camlist, 0); + + if (write_regvals(ov, aRegvalsInit518)) + goto error; + + /* Set LED GPIO pin to output mode */ + if (reg_w_mask(ov, 0x57, 0x00, 0x02) < 0) + goto error; + + /* LED is off by default with OV518; have to explicitly turn it on */ + if (ov->led_policy == LED_OFF || ov->led_policy == LED_AUTO) + ov51x_led_control(ov, 0); + else + ov51x_led_control(ov, 1); + + /* Don't require compression if dumppix is enabled; otherwise it's + * required. OV518 has no uncompressed mode, to save RAM. */ + if (!dumppix && !ov->compress) { + ov->compress = 1; + warn("Compression required with OV518...enabling"); + } + + if (ov->bridge == BRG_OV518) { + if (write_regvals(ov, aRegvalsNorm518)) + goto error; + } else if (ov->bridge == BRG_OV518PLUS) { + if (write_regvals(ov, aRegvalsNorm518Plus)) + goto error; + } else { + err("Invalid bridge"); + } + + if (reg_w(ov, 0x2f, 0x80) < 0) + goto error; + + if (ov518_init_compression(ov)) + goto error; + + if (ov->bridge == BRG_OV518) + { + struct usb_interface *ifp; + struct usb_host_interface *alt; + __u16 mxps = 0; + + ifp = usb_ifnum_to_if(ov->dev, 0); + if (ifp) { + alt = usb_altnum_to_altsetting(ifp, 7); + if (alt) + mxps = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize); + } + + /* Some OV518s have packet numbering by default, some don't */ + if (mxps == 897) + ov->packet_numbering = 1; + else + ov->packet_numbering = 0; + } else { + /* OV518+ has packet numbering turned on by default */ + ov->packet_numbering = 1; + } + + ov518_set_packet_size(ov, 0); + + ov->snap_enabled = snapshot; + + /* Test for 76xx */ + ov->primary_i2c_slave = OV7xx0_SID; + if (ov51x_set_slave_ids(ov, OV7xx0_SID) < 0) + goto error; + + /* The OV518 must be more aggressive about sensor detection since + * I2C write will never fail if the sensor is not present. We have + * to try to initialize the sensor to detect its presence */ + + if (init_ov_sensor(ov) < 0) { + /* Test for 6xx0 */ + ov->primary_i2c_slave = OV6xx0_SID; + if (ov51x_set_slave_ids(ov, OV6xx0_SID) < 0) + goto error; + + if (init_ov_sensor(ov) < 0) { + /* Test for 8xx0 */ + ov->primary_i2c_slave = OV8xx0_SID; + if (ov51x_set_slave_ids(ov, OV8xx0_SID) < 0) + goto error; + + if (init_ov_sensor(ov) < 0) { + err("Can't determine sensor slave IDs"); + goto error; + } else { + err("Detected unsupported OV8xx0 sensor"); + goto error; + } + } else { + if (ov6xx0_configure(ov) < 0) { + err("Failed to configure OV6xx0"); + goto error; + } + } + } else { + if (ov7xx0_configure(ov) < 0) { + err("Failed to configure OV7xx0"); + goto error; + } + } + + ov->maxwidth = 352; + ov->maxheight = 288; + + // The OV518 cannot go as low as the sensor can + ov->minwidth = 160; + ov->minheight = 120; + + return 0; + +error: + err("OV518 Config failed"); + + return -EBUSY; +} + +/**************************************************************************** + * sysfs + ***************************************************************************/ + +static inline struct usb_ov511 *cd_to_ov(struct class_device *cd) +{ + struct video_device *vdev = to_video_device(cd); + return video_get_drvdata(vdev); +} + +static ssize_t show_custom_id(struct class_device *cd, char *buf) +{ + struct usb_ov511 *ov = cd_to_ov(cd); + return sprintf(buf, "%d\n", ov->customid); +} +static CLASS_DEVICE_ATTR(custom_id, S_IRUGO, show_custom_id, NULL); + +static ssize_t show_model(struct class_device *cd, char *buf) +{ + struct usb_ov511 *ov = cd_to_ov(cd); + return sprintf(buf, "%s\n", ov->desc); +} +static CLASS_DEVICE_ATTR(model, S_IRUGO, show_model, NULL); + +static ssize_t show_bridge(struct class_device *cd, char *buf) +{ + struct usb_ov511 *ov = cd_to_ov(cd); + return sprintf(buf, "%s\n", symbolic(brglist, ov->bridge)); +} +static CLASS_DEVICE_ATTR(bridge, S_IRUGO, show_bridge, NULL); + +static ssize_t show_sensor(struct class_device *cd, char *buf) +{ + struct usb_ov511 *ov = cd_to_ov(cd); + return sprintf(buf, "%s\n", symbolic(senlist, ov->sensor)); +} +static CLASS_DEVICE_ATTR(sensor, S_IRUGO, show_sensor, NULL); + +static ssize_t show_brightness(struct class_device *cd, char *buf) +{ + struct usb_ov511 *ov = cd_to_ov(cd); + unsigned short x; + + if (!ov->dev) + return -ENODEV; + sensor_get_brightness(ov, &x); + return sprintf(buf, "%d\n", x >> 8); +} +static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL); + +static ssize_t show_saturation(struct class_device *cd, char *buf) +{ + struct usb_ov511 *ov = cd_to_ov(cd); + unsigned short x; + + if (!ov->dev) + return -ENODEV; + sensor_get_saturation(ov, &x); + return sprintf(buf, "%d\n", x >> 8); +} +static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL); + +static ssize_t show_contrast(struct class_device *cd, char *buf) +{ + struct usb_ov511 *ov = cd_to_ov(cd); + unsigned short x; + + if (!ov->dev) + return -ENODEV; + sensor_get_contrast(ov, &x); + return sprintf(buf, "%d\n", x >> 8); +} +static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL); + +static ssize_t show_hue(struct class_device *cd, char *buf) +{ + struct usb_ov511 *ov = cd_to_ov(cd); + unsigned short x; + + if (!ov->dev) + return -ENODEV; + sensor_get_hue(ov, &x); + return sprintf(buf, "%d\n", x >> 8); +} +static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL); + +static ssize_t show_exposure(struct class_device *cd, char *buf) +{ + struct usb_ov511 *ov = cd_to_ov(cd); + unsigned char exp = 0; + + if (!ov->dev) + return -ENODEV; + sensor_get_exposure(ov, &exp); + return sprintf(buf, "%d\n", exp >> 8); +} +static CLASS_DEVICE_ATTR(exposure, S_IRUGO, show_exposure, NULL); + +static void ov_create_sysfs(struct video_device *vdev) +{ + video_device_create_file(vdev, &class_device_attr_custom_id); + video_device_create_file(vdev, &class_device_attr_model); + video_device_create_file(vdev, &class_device_attr_bridge); + video_device_create_file(vdev, &class_device_attr_sensor); + video_device_create_file(vdev, &class_device_attr_brightness); + video_device_create_file(vdev, &class_device_attr_saturation); + video_device_create_file(vdev, &class_device_attr_contrast); + video_device_create_file(vdev, &class_device_attr_hue); + video_device_create_file(vdev, &class_device_attr_exposure); +} + +/**************************************************************************** + * USB routines + ***************************************************************************/ + +static int +ov51x_probe(struct usb_interface *intf, const struct usb_device_id *id) +{ + struct usb_device *dev = interface_to_usbdev(intf); + struct usb_interface_descriptor *idesc; + struct usb_ov511 *ov; + int i; + + PDEBUG(1, "probing for device..."); + + /* We don't handle multi-config cameras */ + if (dev->descriptor.bNumConfigurations != 1) + return -ENODEV; + + idesc = &intf->cur_altsetting->desc; + + if (idesc->bInterfaceClass != 0xFF) + return -ENODEV; + if (idesc->bInterfaceSubClass != 0x00) + return -ENODEV; + + if ((ov = kzalloc(sizeof(*ov), GFP_KERNEL)) == NULL) { + err("couldn't kmalloc ov struct"); + goto error_out; + } + + ov->dev = dev; + ov->iface = idesc->bInterfaceNumber; + ov->led_policy = led; + ov->compress = compress; + ov->lightfreq = lightfreq; + ov->num_inputs = 1; /* Video decoder init functs. change this */ + ov->stop_during_set = !fastset; + ov->backlight = backlight; + ov->mirror = mirror; + ov->auto_brt = autobright; + ov->auto_gain = autogain; + ov->auto_exp = autoexp; + + switch (le16_to_cpu(dev->descriptor.idProduct)) { + case PROD_OV511: + ov->bridge = BRG_OV511; + ov->bclass = BCL_OV511; + break; + case PROD_OV511PLUS: + ov->bridge = BRG_OV511PLUS; + ov->bclass = BCL_OV511; + break; + case PROD_OV518: + ov->bridge = BRG_OV518; + ov->bclass = BCL_OV518; + break; + case PROD_OV518PLUS: + ov->bridge = BRG_OV518PLUS; + ov->bclass = BCL_OV518; + break; + case PROD_ME2CAM: + if (le16_to_cpu(dev->descriptor.idVendor) != VEND_MATTEL) + goto error; + ov->bridge = BRG_OV511PLUS; + ov->bclass = BCL_OV511; + break; + default: + err("Unknown product ID 0x%04x", le16_to_cpu(dev->descriptor.idProduct)); + goto error; + } + + info("USB %s video device found", symbolic(brglist, ov->bridge)); + + init_waitqueue_head(&ov->wq); + + mutex_init(&ov->lock); /* to 1 == available */ + mutex_init(&ov->buf_lock); + mutex_init(&ov->i2c_lock); + mutex_init(&ov->cbuf_lock); + + ov->buf_state = BUF_NOT_ALLOCATED; + + if (usb_make_path(dev, ov->usb_path, OV511_USB_PATH_LEN) < 0) { + err("usb_make_path error"); + goto error; + } + + /* Allocate control transfer buffer. */ + /* Must be kmalloc()'ed, for DMA compatibility */ + ov->cbuf = kmalloc(OV511_CBUF_SIZE, GFP_KERNEL); + if (!ov->cbuf) + goto error; + + if (ov->bclass == BCL_OV518) { + if (ov518_configure(ov) < 0) + goto error; + } else { + if (ov511_configure(ov) < 0) + goto error; + } + + for (i = 0; i < OV511_NUMFRAMES; i++) { + ov->frame[i].framenum = i; + init_waitqueue_head(&ov->frame[i].wq); + } + + for (i = 0; i < OV511_NUMSBUF; i++) { + ov->sbuf[i].ov = ov; + spin_lock_init(&ov->sbuf[i].lock); + ov->sbuf[i].n = i; + } + + /* Unnecessary? (This is done on open(). Need to make sure variables + * are properly initialized without this before removing it, though). */ + if (ov51x_set_default_params(ov) < 0) + goto error; + +#ifdef OV511_DEBUG + if (dump_bridge) { + if (ov->bclass == BCL_OV511) + ov511_dump_regs(ov); + else + ov518_dump_regs(ov); + } +#endif + + ov->vdev = video_device_alloc(); + if (!ov->vdev) + goto error; + + memcpy(ov->vdev, &vdev_template, sizeof(*ov->vdev)); + ov->vdev->dev = &dev->dev; + video_set_drvdata(ov->vdev, ov); + + for (i = 0; i < OV511_MAX_UNIT_VIDEO; i++) { + /* Minor 0 cannot be specified; assume user wants autodetect */ + if (unit_video[i] == 0) + break; + + if (video_register_device(ov->vdev, VFL_TYPE_GRABBER, + unit_video[i]) >= 0) { + break; + } + } + + /* Use the next available one */ + if ((ov->vdev->minor == -1) && + video_register_device(ov->vdev, VFL_TYPE_GRABBER, -1) < 0) { + err("video_register_device failed"); + goto error; + } + + info("Device at %s registered to minor %d", ov->usb_path, + ov->vdev->minor); + + usb_set_intfdata(intf, ov); + ov_create_sysfs(ov->vdev); + return 0; + +error: + if (ov->vdev) { + if (-1 == ov->vdev->minor) + video_device_release(ov->vdev); + else + video_unregister_device(ov->vdev); + ov->vdev = NULL; + } + + if (ov->cbuf) { + mutex_lock(&ov->cbuf_lock); + kfree(ov->cbuf); + ov->cbuf = NULL; + mutex_unlock(&ov->cbuf_lock); + } + + kfree(ov); + ov = NULL; + +error_out: + err("Camera initialization failed"); + return -EIO; +} + +static void +ov51x_disconnect(struct usb_interface *intf) +{ + struct usb_ov511 *ov = usb_get_intfdata(intf); + int n; + + PDEBUG(3, ""); + + usb_set_intfdata (intf, NULL); + + if (!ov) + return; + + if (ov->vdev) + video_unregister_device(ov->vdev); + + for (n = 0; n < OV511_NUMFRAMES; n++) + ov->frame[n].grabstate = FRAME_ERROR; + + ov->curframe = -1; + + /* This will cause the process to request another frame */ + for (n = 0; n < OV511_NUMFRAMES; n++) + wake_up_interruptible(&ov->frame[n].wq); + + wake_up_interruptible(&ov->wq); + + ov->streaming = 0; + ov51x_unlink_isoc(ov); + + ov->dev = NULL; + + /* Free the memory */ + if (ov && !ov->user) { + mutex_lock(&ov->cbuf_lock); + kfree(ov->cbuf); + ov->cbuf = NULL; + mutex_unlock(&ov->cbuf_lock); + + ov51x_dealloc(ov); + kfree(ov); + ov = NULL; + } + + PDEBUG(3, "Disconnect complete"); +} + +static struct usb_driver ov511_driver = { + .name = "ov511", + .id_table = device_table, + .probe = ov51x_probe, + .disconnect = ov51x_disconnect +}; + +/**************************************************************************** + * + * Module routines + * + ***************************************************************************/ + +static int __init +usb_ov511_init(void) +{ + int retval; + + retval = usb_register(&ov511_driver); + if (retval) + goto out; + + info(DRIVER_VERSION " : " DRIVER_DESC); + +out: + return retval; +} + +static void __exit +usb_ov511_exit(void) +{ + usb_deregister(&ov511_driver); + info("driver deregistered"); + +} + +module_init(usb_ov511_init); +module_exit(usb_ov511_exit); + |