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authorMauro Carvalho Chehab <mchehab@infradead.org>2006-03-25 15:05:39 +0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2006-03-25 15:29:04 +0300
commit9f6933be665ce3b049c274c99810ac754edabf19 (patch)
tree70a670d030c5d5a4175076724e4720a5b967e2bc /drivers/media/video/ov511.c
parent7fa033b103bc3f5c37f934695473f63adf140dba (diff)
downloadlinux-9f6933be665ce3b049c274c99810ac754edabf19.tar.xz
V4L/DVB (3599a): Move drivers/usb/media to drivers/media/video
Because of historic reasons, there are two separate directories with V4L stuff. Most drivers are located at driver/media/video. However, some code for USB Webcams were inserted under drivers/usb/media. This makes difficult for module authors to know were things should be. Also, makes Kconfig menu confusing for normal users. This patch moves all V4L content under drivers/usb/media to drivers/media/video, and fixes Kconfig/Makefile entries. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/ov511.c')
-rw-r--r--drivers/media/video/ov511.c5932
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);
+
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-23 02:40:50 +0300