/*
   * Zoran zr36057/zr36067 PCI controller driver, for the
   * Pinnacle/Miro DC10/DC10+/DC30/DC30+, Iomega Buz, Linux
   * Media Labs LML33/LML33R10.
   *
   * This part handles card-specific data and detection
   *
   * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
   *
   * Currently maintained by:
   *   Ronald Bultje    <rbultje@ronald.bitfreak.net>
   *   Laurent Pinchart <laurent.pinchart@skynet.be>
   *   Mailinglist      <mjpeg-users@lists.sf.net>
   *
   * 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/delay.h>
  
  #include <linux/types.h>
  #include <linux/kernel.h>
  #include <linux/module.h>
  #include <linux/init.h>
  #include <linux/vmalloc.h>
  #include <linux/slab.h>
  
  #include <linux/proc_fs.h>
  #include <linux/i2c.h>
  #include <linux/i2c-algo-bit.h>
  #include <linux/videodev2.h>
  #include <linux/spinlock.h>
  #include <linux/sem.h>
  #include <linux/kmod.h>
  #include <linux/wait.h>
  
  #include <linux/pci.h>
  #include <linux/interrupt.h>
  #include <linux/mutex.h>
  #include <linux/io.h>
  #include <media/v4l2-common.h>
  #include <media/bt819.h>
  
  #include "videocodec.h"
  #include "zoran.h"
  #include "zoran_card.h"
  #include "zoran_device.h"
  #include "zoran_procfs.h"
  
  extern const struct zoran_format zoran_formats[];
  
  static int card[BUZ_MAX] = { [0 ... (BUZ_MAX-1)] = -1 };
  module_param_array(card, int, NULL, 0444);
  MODULE_PARM_DESC(card, "Card type");
  
  /*
     The video mem address of the video card.
     The driver has a little database for some videocards
     to determine it from there. If your video card is not in there
     you have either to give it to the driver as a parameter
     or set in in a VIDIOCSFBUF ioctl
   */
  
  static unsigned long vidmem;	/* default = 0 - Video memory base address */
  module_param(vidmem, ulong, 0444);
  MODULE_PARM_DESC(vidmem, "Default video memory base address");
  
  /*
     Default input and video norm at startup of the driver.
  */
  
  static unsigned int default_input;	/* default 0 = Composite, 1 = S-Video */
  module_param(default_input, uint, 0444);
  MODULE_PARM_DESC(default_input,
  		 "Default input (0=Composite, 1=S-Video, 2=Internal)");
  
  static int default_mux = 1;	/* 6 Eyes input selection */
  module_param(default_mux, int, 0644);
  MODULE_PARM_DESC(default_mux,
  		 "Default 6 Eyes mux setting (Input selection)");
  
  static int default_norm;	/* default 0 = PAL, 1 = NTSC 2 = SECAM */
  module_param(default_norm, int, 0444);
  MODULE_PARM_DESC(default_norm, "Default norm (0=PAL, 1=NTSC, 2=SECAM)");
  
  /* /dev/videoN, -1 for autodetect */
  static int video_nr[BUZ_MAX] = { [0 ... (BUZ_MAX-1)] = -1 };
  module_param_array(video_nr, int, NULL, 0444);
  MODULE_PARM_DESC(video_nr, "Video device number (-1=Auto)");
  
  int v4l_nbufs = 4;
  int v4l_bufsize = 864;		/* Everybody should be able to work with this setting */
  module_param(v4l_nbufs, int, 0644);
  MODULE_PARM_DESC(v4l_nbufs, "Maximum number of V4L buffers to use");
  module_param(v4l_bufsize, int, 0644);
  MODULE_PARM_DESC(v4l_bufsize, "Maximum size per V4L buffer (in kB)");
  
  int jpg_nbufs = 32;
  int jpg_bufsize = 512;		/* max size for 100% quality full-PAL frame */
  module_param(jpg_nbufs, int, 0644);
  MODULE_PARM_DESC(jpg_nbufs, "Maximum number of JPG buffers to use");
  module_param(jpg_bufsize, int, 0644);
  MODULE_PARM_DESC(jpg_bufsize, "Maximum size per JPG buffer (in kB)");
  
  int pass_through = 0;		/* 1=Pass through TV signal when device is not used */
  				/* 0=Show color bar when device is not used (LML33: only if lml33dpath=1) */
  module_param(pass_through, int, 0644);
  MODULE_PARM_DESC(pass_through,
  		 "Pass TV signal through to TV-out when idling");
  
  int zr36067_debug = 1;
  module_param_named(debug, zr36067_debug, int, 0644);
  MODULE_PARM_DESC(debug, "Debug level (0-5)");
  
  #define ZORAN_VERSION "0.10.1"
  
  MODULE_DESCRIPTION("Zoran-36057/36067 JPEG codec driver");
  MODULE_AUTHOR("Serguei Miridonov");
  MODULE_LICENSE("GPL");
  MODULE_VERSION(ZORAN_VERSION);
  
  #define ZR_DEVICE(subven, subdev, data)	{ \
  	.vendor = PCI_VENDOR_ID_ZORAN, .device = PCI_DEVICE_ID_ZORAN_36057, \
  	.subvendor = (subven), .subdevice = (subdev), .driver_data = (data) }
  
  static struct pci_device_id zr36067_pci_tbl[] = {
  	ZR_DEVICE(PCI_VENDOR_ID_MIRO, PCI_DEVICE_ID_MIRO_DC10PLUS, DC10plus),
  	ZR_DEVICE(PCI_VENDOR_ID_MIRO, PCI_DEVICE_ID_MIRO_DC30PLUS, DC30plus),
  	ZR_DEVICE(PCI_VENDOR_ID_ELECTRONICDESIGNGMBH, PCI_DEVICE_ID_LML_33R10, LML33R10),
  	ZR_DEVICE(PCI_VENDOR_ID_IOMEGA, PCI_DEVICE_ID_IOMEGA_BUZ, BUZ),
  	ZR_DEVICE(PCI_ANY_ID, PCI_ANY_ID, NUM_CARDS),
  	{0}
  };
  MODULE_DEVICE_TABLE(pci, zr36067_pci_tbl);
  
  static unsigned int zoran_num;		/* number of cards found */
  
  /* videocodec bus functions ZR36060 */
  static u32
  zr36060_read (struct videocodec *codec,
  	      u16                reg)
  {
  	struct zoran *zr = (struct zoran *) codec->master_data->data;
  	__u32 data;
  
  	if (post_office_wait(zr)
  	    || post_office_write(zr, 0, 1, reg >> 8)
  	    || post_office_write(zr, 0, 2, reg & 0xff)) {
  		return -1;
  	}
  
  	data = post_office_read(zr, 0, 3) & 0xff;
  	return data;
  }
  
  static void
  zr36060_write (struct videocodec *codec,
  	       u16                reg,
  	       u32                val)
  {
  	struct zoran *zr = (struct zoran *) codec->master_data->data;
  
  	if (post_office_wait(zr)
  	    || post_office_write(zr, 0, 1, reg >> 8)
  	    || post_office_write(zr, 0, 2, reg & 0xff)) {
  		return;
  	}
  
  	post_office_write(zr, 0, 3, val & 0xff);
  }
  
  /* videocodec bus functions ZR36050 */
  static u32
  zr36050_read (struct videocodec *codec,
  	      u16                reg)
  {
  	struct zoran *zr = (struct zoran *) codec->master_data->data;
  	__u32 data;
  
  	if (post_office_wait(zr)
  	    || post_office_write(zr, 1, 0, reg >> 2)) {	// reg. HIGHBYTES
  		return -1;
  	}
  
  	data = post_office_read(zr, 0, reg & 0x03) & 0xff;	// reg. LOWBYTES + read
  	return data;
  }
  
  static void
  zr36050_write (struct videocodec *codec,
  	       u16                reg,
  	       u32                val)
  {
  	struct zoran *zr = (struct zoran *) codec->master_data->data;
  
  	if (post_office_wait(zr)
  	    || post_office_write(zr, 1, 0, reg >> 2)) {	// reg. HIGHBYTES
  		return;
  	}
  
  	post_office_write(zr, 0, reg & 0x03, val & 0xff);	// reg. LOWBYTES + wr. data
  }
  
  /* videocodec bus functions ZR36016 */
  static u32
  zr36016_read (struct videocodec *codec,
  	      u16                reg)
  {
  	struct zoran *zr = (struct zoran *) codec->master_data->data;
  	__u32 data;
  
  	if (post_office_wait(zr)) {
  		return -1;
  	}
  
  	data = post_office_read(zr, 2, reg & 0x03) & 0xff;	// read
  	return data;
  }
  
  /* hack for in zoran_device.c */
  void
  zr36016_write (struct videocodec *codec,
  	       u16                reg,
  	       u32                val)
  {
  	struct zoran *zr = (struct zoran *) codec->master_data->data;
  
  	if (post_office_wait(zr)) {
  		return;
  	}
  
  	post_office_write(zr, 2, reg & 0x03, val & 0x0ff);	// wr. data
  }
  
  /*
   * Board specific information
   */
  
  static void
  dc10_init (struct zoran *zr)
  {
  	dprintk(3, KERN_DEBUG "%s: %s
  ", ZR_DEVNAME(zr), __func__);
  
  	/* Pixel clock selection */
  	GPIO(zr, 4, 0);
  	GPIO(zr, 5, 1);
  	/* Enable the video bus sync signals */
  	GPIO(zr, 7, 0);
  }
  
  static void
  dc10plus_init (struct zoran *zr)
  {
  	dprintk(3, KERN_DEBUG "%s: %s
  ", ZR_DEVNAME(zr), __func__);
  }
  
  static void
  buz_init (struct zoran *zr)
  {
  	dprintk(3, KERN_DEBUG "%s: %s
  ", ZR_DEVNAME(zr), __func__);
  
  	/* some stuff from Iomega */
  	pci_write_config_dword(zr->pci_dev, 0xfc, 0x90680f15);
  	pci_write_config_dword(zr->pci_dev, 0x0c, 0x00012020);
  	pci_write_config_dword(zr->pci_dev, 0xe8, 0xc0200000);
  }
  
  static void
  lml33_init (struct zoran *zr)
  {
  	dprintk(3, KERN_DEBUG "%s: %s
  ", ZR_DEVNAME(zr), __func__);
  
  	GPIO(zr, 2, 1);		// Set Composite input/output
  }
  
  static void
  avs6eyes_init (struct zoran *zr)
  {
  	// AverMedia 6-Eyes original driver by Christer Weinigel
  
  	// Lifted straight from Christer's old driver and
  	// modified slightly by Martin Samuelsson.
  
  	int mux = default_mux; /* 1 = BT866, 7 = VID1 */
  
  	GPIO(zr, 4, 1); /* Bt866 SLEEP on */
  	udelay(2);
  
  	GPIO(zr, 0, 1); /* ZR36060 /RESET on */
  	GPIO(zr, 1, 0); /* ZR36060 /SLEEP on */
  	GPIO(zr, 2, mux & 1);   /* MUX S0 */
  	GPIO(zr, 3, 0); /* /FRAME on */
  	GPIO(zr, 4, 0); /* Bt866 SLEEP off */
  	GPIO(zr, 5, mux & 2);   /* MUX S1 */
  	GPIO(zr, 6, 0); /* ? */
  	GPIO(zr, 7, mux & 4);   /* MUX S2 */
  
  }
  
  static char *
  codecid_to_modulename (u16 codecid)
  {
  	char *name = NULL;
  
  	switch (codecid) {
  	case CODEC_TYPE_ZR36060:
  		name = "zr36060";
  		break;
  	case CODEC_TYPE_ZR36050:
  		name = "zr36050";
  		break;
  	case CODEC_TYPE_ZR36016:
  		name = "zr36016";
  		break;
  	}
  
  	return name;
  }
  
  // struct tvnorm {
  //      u16 Wt, Wa, HStart, HSyncStart, Ht, Ha, VStart;
  // };
  
  static struct tvnorm f50sqpixel = { 944, 768, 83, 880, 625, 576, 16 };
  static struct tvnorm f60sqpixel = { 780, 640, 51, 716, 525, 480, 12 };
  static struct tvnorm f50ccir601 = { 864, 720, 75, 804, 625, 576, 18 };
  static struct tvnorm f60ccir601 = { 858, 720, 57, 788, 525, 480, 16 };
  
  static struct tvnorm f50ccir601_lml33 = { 864, 720, 75+34, 804, 625, 576, 18 };
  static struct tvnorm f60ccir601_lml33 = { 858, 720, 57+34, 788, 525, 480, 16 };
  
  /* The DC10 (57/16/50) uses VActive as HSync, so HStart must be 0 */
  static struct tvnorm f50sqpixel_dc10 = { 944, 768, 0, 880, 625, 576, 0 };
  static struct tvnorm f60sqpixel_dc10 = { 780, 640, 0, 716, 525, 480, 12 };
  
  /* FIXME: I cannot swap U and V in saa7114, so i do one
   * pixel left shift in zoran (75 -> 74)
   * (Maxim Yevtyushkin <max@linuxmedialabs.com>) */
  static struct tvnorm f50ccir601_lm33r10 = { 864, 720, 74+54, 804, 625, 576, 18 };
  static struct tvnorm f60ccir601_lm33r10 = { 858, 720, 56+54, 788, 525, 480, 16 };
  
  /* FIXME: The ks0127 seem incapable of swapping U and V, too, which is why I
   * copy Maxim's left shift hack for the 6 Eyes.
   *
   * Christer's driver used the unshifted norms, though...
   * /Sam  */
  static struct tvnorm f50ccir601_avs6eyes = { 864, 720, 74, 804, 625, 576, 18 };
  static struct tvnorm f60ccir601_avs6eyes = { 858, 720, 56, 788, 525, 480, 16 };
  
  static const unsigned short vpx3220_addrs[] = { 0x43, 0x47, I2C_CLIENT_END };
  static const unsigned short saa7110_addrs[] = { 0x4e, 0x4f, I2C_CLIENT_END };
  static const unsigned short saa7111_addrs[] = { 0x25, 0x24, I2C_CLIENT_END };
  static const unsigned short saa7114_addrs[] = { 0x21, 0x20, I2C_CLIENT_END };
  static const unsigned short adv717x_addrs[] = { 0x6a, 0x6b, 0x2a, 0x2b, I2C_CLIENT_END };
  static const unsigned short ks0127_addrs[] = { 0x6c, 0x6d, I2C_CLIENT_END };
  static const unsigned short saa7185_addrs[] = { 0x44, I2C_CLIENT_END };
  static const unsigned short bt819_addrs[] = { 0x45, I2C_CLIENT_END };
  static const unsigned short bt856_addrs[] = { 0x44, I2C_CLIENT_END };
  static const unsigned short bt866_addrs[] = { 0x44, I2C_CLIENT_END };
  
  static struct card_info zoran_cards[NUM_CARDS] = {
  	{
  		.type = DC10_old,
  		.name = "DC10(old)",
  		.i2c_decoder = "vpx3220a",
  		.addrs_decoder = vpx3220_addrs,
  		.video_codec = CODEC_TYPE_ZR36050,
  		.video_vfe = CODEC_TYPE_ZR36016,
  
  		.inputs = 3,
  		.input = {
  			{ 1, "Composite" },
  			{ 2, "S-Video" },
  			{ 0, "Internal/comp" }
  		},
  		.norms = V4L2_STD_NTSC|V4L2_STD_PAL|V4L2_STD_SECAM,
  		.tvn = {
  			&f50sqpixel_dc10,
  			&f60sqpixel_dc10,
  			&f50sqpixel_dc10
  		},
  		.jpeg_int = 0,
  		.vsync_int = ZR36057_ISR_GIRQ1,
  		.gpio = { 2, 1, -1, 3, 7, 0, 4, 5 },
  		.gpio_pol = { 0, 0, 0, 1, 0, 0, 0, 0 },
  		.gpcs = { -1, 0 },
  		.vfe_pol = { 0, 0, 0, 0, 0, 0, 0, 0 },
  		.gws_not_connected = 0,
  		.input_mux = 0,
  		.init = &dc10_init,
  	}, {
  		.type = DC10_new,
  		.name = "DC10(new)",
  		.i2c_decoder = "saa7110",
  		.addrs_decoder = saa7110_addrs,
  		.i2c_encoder = "adv7175",
  		.addrs_encoder = adv717x_addrs,
  		.video_codec = CODEC_TYPE_ZR36060,
  
  		.inputs = 3,
  		.input = {
  				{ 0, "Composite" },
  				{ 7, "S-Video" },
  				{ 5, "Internal/comp" }
  			},
  		.norms = V4L2_STD_NTSC|V4L2_STD_PAL|V4L2_STD_SECAM,
  		.tvn = {
  				&f50sqpixel,
  				&f60sqpixel,
  				&f50sqpixel},
  		.jpeg_int = ZR36057_ISR_GIRQ0,
  		.vsync_int = ZR36057_ISR_GIRQ1,
  		.gpio = { 3, 0, 6, 1, 2, -1, 4, 5 },
  		.gpio_pol = { 0, 0, 0, 0, 0, 0, 0, 0 },
  		.gpcs = { -1, 1},
  		.vfe_pol = { 1, 1, 1, 1, 0, 0, 0, 0 },
  		.gws_not_connected = 0,
  		.input_mux = 0,
  		.init = &dc10plus_init,
  	}, {
  		.type = DC10plus,
  		.name = "DC10plus",
  		.i2c_decoder = "saa7110",
  		.addrs_decoder = saa7110_addrs,
  		.i2c_encoder = "adv7175",
  		.addrs_encoder = adv717x_addrs,
  		.video_codec = CODEC_TYPE_ZR36060,
  
  		.inputs = 3,
  		.input = {
  			{ 0, "Composite" },
  			{ 7, "S-Video" },
  			{ 5, "Internal/comp" }
  		},
  		.norms = V4L2_STD_NTSC|V4L2_STD_PAL|V4L2_STD_SECAM,
  		.tvn = {
  			&f50sqpixel,
  			&f60sqpixel,
  			&f50sqpixel
  		},
  		.jpeg_int = ZR36057_ISR_GIRQ0,
  		.vsync_int = ZR36057_ISR_GIRQ1,
  		.gpio = { 3, 0, 6, 1, 2, -1, 4, 5 },
  		.gpio_pol = { 0, 0, 0, 0, 0, 0, 0, 0 },
  		.gpcs = { -1, 1 },
  		.vfe_pol = { 1, 1, 1, 1, 0, 0, 0, 0 },
  		.gws_not_connected = 0,
  		.input_mux = 0,
  		.init = &dc10plus_init,
  	}, {
  		.type = DC30,
  		.name = "DC30",
  		.i2c_decoder = "vpx3220a",
  		.addrs_decoder = vpx3220_addrs,
  		.i2c_encoder = "adv7175",
  		.addrs_encoder = adv717x_addrs,
  		.video_codec = CODEC_TYPE_ZR36050,
  		.video_vfe = CODEC_TYPE_ZR36016,
  
  		.inputs = 3,
  		.input = {
  			{ 1, "Composite" },
  			{ 2, "S-Video" },
  			{ 0, "Internal/comp" }
  		},
  		.norms = V4L2_STD_NTSC|V4L2_STD_PAL|V4L2_STD_SECAM,
  		.tvn = {
  			&f50sqpixel_dc10,
  			&f60sqpixel_dc10,
  			&f50sqpixel_dc10
  		},
  		.jpeg_int = 0,
  		.vsync_int = ZR36057_ISR_GIRQ1,
  		.gpio = { 2, 1, -1, 3, 7, 0, 4, 5 },
  		.gpio_pol = { 0, 0, 0, 1, 0, 0, 0, 0 },
  		.gpcs = { -1, 0 },
  		.vfe_pol = { 0, 0, 0, 0, 0, 0, 0, 0 },
  		.gws_not_connected = 0,
  		.input_mux = 0,
  		.init = &dc10_init,
  	}, {
  		.type = DC30plus,
  		.name = "DC30plus",
  		.i2c_decoder = "vpx3220a",
  		.addrs_decoder = vpx3220_addrs,
  		.i2c_encoder = "adv7175",
  		.addrs_encoder = adv717x_addrs,
  		.video_codec = CODEC_TYPE_ZR36050,
  		.video_vfe = CODEC_TYPE_ZR36016,
  
  		.inputs = 3,
  		.input = {
  			{ 1, "Composite" },
  			{ 2, "S-Video" },
  			{ 0, "Internal/comp" }
  		},
  		.norms = V4L2_STD_NTSC|V4L2_STD_PAL|V4L2_STD_SECAM,
  		.tvn = {
  			&f50sqpixel_dc10,
  			&f60sqpixel_dc10,
  			&f50sqpixel_dc10
  		},
  		.jpeg_int = 0,
  		.vsync_int = ZR36057_ISR_GIRQ1,
  		.gpio = { 2, 1, -1, 3, 7, 0, 4, 5 },
  		.gpio_pol = { 0, 0, 0, 1, 0, 0, 0, 0 },
  		.gpcs = { -1, 0 },
  		.vfe_pol = { 0, 0, 0, 0, 0, 0, 0, 0 },
  		.gws_not_connected = 0,
  		.input_mux = 0,
  		.init = &dc10_init,
  	}, {
  		.type = LML33,
  		.name = "LML33",
  		.i2c_decoder = "bt819a",
  		.addrs_decoder = bt819_addrs,
  		.i2c_encoder = "bt856",
  		.addrs_encoder = bt856_addrs,
  		.video_codec = CODEC_TYPE_ZR36060,
  
  		.inputs = 2,
  		.input = {
  			{ 0, "Composite" },
  			{ 7, "S-Video" }
  		},
  		.norms = V4L2_STD_NTSC|V4L2_STD_PAL,
  		.tvn = {
  			&f50ccir601_lml33,
  			&f60ccir601_lml33,
  			NULL
  		},
  		.jpeg_int = ZR36057_ISR_GIRQ1,
  		.vsync_int = ZR36057_ISR_GIRQ0,
  		.gpio = { 1, -1, 3, 5, 7, -1, -1, -1 },
  		.gpio_pol = { 0, 0, 0, 0, 1, 0, 0, 0 },
  		.gpcs = { 3, 1 },
  		.vfe_pol = { 1, 1, 0, 0, 0, 1, 0, 0 },
  		.gws_not_connected = 1,
  		.input_mux = 0,
  		.init = &lml33_init,
  	}, {
  		.type = LML33R10,
  		.name = "LML33R10",
  		.i2c_decoder = "saa7114",
  		.addrs_decoder = saa7114_addrs,
  		.i2c_encoder = "adv7170",
  		.addrs_encoder = adv717x_addrs,
  		.video_codec = CODEC_TYPE_ZR36060,
  
  		.inputs = 2,
  		.input = {
  			{ 0, "Composite" },
  			{ 7, "S-Video" }
  		},
  		.norms = V4L2_STD_NTSC|V4L2_STD_PAL,
  		.tvn = {
  			&f50ccir601_lm33r10,
  			&f60ccir601_lm33r10,
  			NULL
  		},
  		.jpeg_int = ZR36057_ISR_GIRQ1,
  		.vsync_int = ZR36057_ISR_GIRQ0,
  		.gpio = { 1, -1, 3, 5, 7, -1, -1, -1 },
  		.gpio_pol = { 0, 0, 0, 0, 1, 0, 0, 0 },
  		.gpcs = { 3, 1 },
  		.vfe_pol = { 1, 1, 0, 0, 0, 1, 0, 0 },
  		.gws_not_connected = 1,
  		.input_mux = 0,
  		.init = &lml33_init,
  	}, {
  		.type = BUZ,
  		.name = "Buz",
  		.i2c_decoder = "saa7111",
  		.addrs_decoder = saa7111_addrs,
  		.i2c_encoder = "saa7185",
  		.addrs_encoder = saa7185_addrs,
  		.video_codec = CODEC_TYPE_ZR36060,
  
  		.inputs = 2,
  		.input = {
  			{ 3, "Composite" },
  			{ 7, "S-Video" }
  		},
  		.norms = V4L2_STD_NTSC|V4L2_STD_PAL|V4L2_STD_SECAM,
  		.tvn = {
  			&f50ccir601,
  			&f60ccir601,
  			&f50ccir601
  		},
  		.jpeg_int = ZR36057_ISR_GIRQ1,
  		.vsync_int = ZR36057_ISR_GIRQ0,
  		.gpio = { 1, -1, 3, -1, -1, -1, -1, -1 },
  		.gpio_pol = { 0, 0, 0, 0, 0, 0, 0, 0 },
  		.gpcs = { 3, 1 },
  		.vfe_pol = { 1, 1, 0, 0, 0, 1, 0, 0 },
  		.gws_not_connected = 1,
  		.input_mux = 0,
  		.init = &buz_init,
  	}, {
  		.type = AVS6EYES,
  		.name = "6-Eyes",
  		/* AverMedia chose not to brand the 6-Eyes. Thus it
  		   can't be autodetected, and requires card=x. */
  		.i2c_decoder = "ks0127",
  		.addrs_decoder = ks0127_addrs,
  		.i2c_encoder = "bt866",
  		.addrs_encoder = bt866_addrs,
  		.video_codec = CODEC_TYPE_ZR36060,
  
  		.inputs = 10,
  		.input = {
  			{ 0, "Composite 1" },
  			{ 1, "Composite 2" },
  			{ 2, "Composite 3" },
  			{ 4, "Composite 4" },
  			{ 5, "Composite 5" },
  			{ 6, "Composite 6" },
  			{ 8, "S-Video 1" },
  			{ 9, "S-Video 2" },
  			{10, "S-Video 3" },
  			{15, "YCbCr" }
  		},
  		.norms = V4L2_STD_NTSC|V4L2_STD_PAL,
  		.tvn = {
  			&f50ccir601_avs6eyes,
  			&f60ccir601_avs6eyes,
  			NULL
  		},
  		.jpeg_int = ZR36057_ISR_GIRQ1,
  		.vsync_int = ZR36057_ISR_GIRQ0,
  		.gpio = { 1, 0, 3, -1, -1, -1, -1, -1 },// Validity unknown /Sam
  		.gpio_pol = { 0, 0, 0, 0, 0, 0, 0, 0 }, // Validity unknown /Sam
  		.gpcs = { 3, 1 },			// Validity unknown /Sam
  		.vfe_pol = { 1, 0, 0, 0, 0, 1, 0, 0 },  // Validity unknown /Sam
  		.gws_not_connected = 1,
  		.input_mux = 1,
  		.init = &avs6eyes_init,
  	}
  
  };
  
  /*
   * I2C functions
   */
  /* software I2C functions */
  static int
  zoran_i2c_getsda (void *data)
  {
  	struct zoran *zr = (struct zoran *) data;
  
  	return (btread(ZR36057_I2CBR) >> 1) & 1;
  }
  
  static int
  zoran_i2c_getscl (void *data)
  {
  	struct zoran *zr = (struct zoran *) data;
  
  	return btread(ZR36057_I2CBR) & 1;
  }
  
  static void
  zoran_i2c_setsda (void *data,
  		  int   state)
  {
  	struct zoran *zr = (struct zoran *) data;
  
  	if (state)
  		zr->i2cbr |= 2;
  	else
  		zr->i2cbr &= ~2;
  	btwrite(zr->i2cbr, ZR36057_I2CBR);
  }
  
  static void
  zoran_i2c_setscl (void *data,
  		  int   state)
  {
  	struct zoran *zr = (struct zoran *) data;
  
  	if (state)
  		zr->i2cbr |= 1;
  	else
  		zr->i2cbr &= ~1;
  	btwrite(zr->i2cbr, ZR36057_I2CBR);
  }
  
  static const struct i2c_algo_bit_data zoran_i2c_bit_data_template = {
  	.setsda = zoran_i2c_setsda,
  	.setscl = zoran_i2c_setscl,
  	.getsda = zoran_i2c_getsda,
  	.getscl = zoran_i2c_getscl,
  	.udelay = 10,
  	.timeout = 100,
  };
  
  static int
  zoran_register_i2c (struct zoran *zr)
  {
  	zr->i2c_algo = zoran_i2c_bit_data_template;
  	zr->i2c_algo.data = zr;
  	strlcpy(zr->i2c_adapter.name, ZR_DEVNAME(zr),
  		sizeof(zr->i2c_adapter.name));
  	i2c_set_adapdata(&zr->i2c_adapter, &zr->v4l2_dev);
  	zr->i2c_adapter.algo_data = &zr->i2c_algo;
  	zr->i2c_adapter.dev.parent = &zr->pci_dev->dev;
  	return i2c_bit_add_bus(&zr->i2c_adapter);
  }
  
  static void
  zoran_unregister_i2c (struct zoran *zr)
  {
  	i2c_del_adapter(&zr->i2c_adapter);
  }
  
  /* Check a zoran_params struct for correctness, insert default params */
  
  int
  zoran_check_jpg_settings (struct zoran              *zr,
  			  struct zoran_jpg_settings *settings,
  			  int try)
  {
  	int err = 0, err0 = 0;
  
  	dprintk(4,
  		KERN_DEBUG
  		"%s: %s - dec: %d, Hdcm: %d, Vdcm: %d, Tdcm: %d
  ",
  		ZR_DEVNAME(zr), __func__, settings->decimation, settings->HorDcm,
  		settings->VerDcm, settings->TmpDcm);
  	dprintk(4,
  		KERN_DEBUG
  		"%s: %s - x: %d, y: %d, w: %d, y: %d
  ",
  		ZR_DEVNAME(zr), __func__, settings->img_x, settings->img_y,
  		settings->img_width, settings->img_height);
  	/* Check decimation, set default values for decimation = 1, 2, 4 */
  	switch (settings->decimation) {
  	case 1:
  
  		settings->HorDcm = 1;
  		settings->VerDcm = 1;
  		settings->TmpDcm = 1;
  		settings->field_per_buff = 2;
  		settings->img_x = 0;
  		settings->img_y = 0;
  		settings->img_width = BUZ_MAX_WIDTH;
  		settings->img_height = BUZ_MAX_HEIGHT / 2;
  		break;
  	case 2:
  
  		settings->HorDcm = 2;
  		settings->VerDcm = 1;
  		settings->TmpDcm = 2;
  		settings->field_per_buff = 1;
  		settings->img_x = (BUZ_MAX_WIDTH == 720) ? 8 : 0;
  		settings->img_y = 0;
  		settings->img_width =
  		    (BUZ_MAX_WIDTH == 720) ? 704 : BUZ_MAX_WIDTH;
  		settings->img_height = BUZ_MAX_HEIGHT / 2;
  		break;
  	case 4:
  
  		if (zr->card.type == DC10_new) {
  			dprintk(1,
  				KERN_DEBUG
  				"%s: %s - HDec by 4 is not supported on the DC10
  ",
  				ZR_DEVNAME(zr), __func__);
  			err0++;
  			break;
  		}
  
  		settings->HorDcm = 4;
  		settings->VerDcm = 2;
  		settings->TmpDcm = 2;
  		settings->field_per_buff = 1;
  		settings->img_x = (BUZ_MAX_WIDTH == 720) ? 8 : 0;
  		settings->img_y = 0;
  		settings->img_width =
  		    (BUZ_MAX_WIDTH == 720) ? 704 : BUZ_MAX_WIDTH;
  		settings->img_height = BUZ_MAX_HEIGHT / 2;
  		break;
  	case 0:
  
  		/* We have to check the data the user has set */
  
  		if (settings->HorDcm != 1 && settings->HorDcm != 2 &&
  		    (zr->card.type == DC10_new || settings->HorDcm != 4)) {
  			settings->HorDcm = clamp(settings->HorDcm, 1, 2);
  			err0++;
  		}
  		if (settings->VerDcm != 1 && settings->VerDcm != 2) {
  			settings->VerDcm = clamp(settings->VerDcm, 1, 2);
  			err0++;
  		}
  		if (settings->TmpDcm != 1 && settings->TmpDcm != 2) {
  			settings->TmpDcm = clamp(settings->TmpDcm, 1, 2);
  			err0++;
  		}
  		if (settings->field_per_buff != 1 &&
  		    settings->field_per_buff != 2) {
  			settings->field_per_buff = clamp(settings->field_per_buff, 1, 2);
  			err0++;
  		}
  		if (settings->img_x < 0) {
  			settings->img_x = 0;
  			err0++;
  		}
  		if (settings->img_y < 0) {
  			settings->img_y = 0;
  			err0++;
  		}
  		if (settings->img_width < 0 || settings->img_width > BUZ_MAX_WIDTH) {
  			settings->img_width = clamp(settings->img_width, 0, (int)BUZ_MAX_WIDTH);
  			err0++;
  		}
  		if (settings->img_height < 0 || settings->img_height > BUZ_MAX_HEIGHT / 2) {
  			settings->img_height = clamp(settings->img_height, 0, BUZ_MAX_HEIGHT / 2);
  			err0++;
  		}
  		if (settings->img_x + settings->img_width > BUZ_MAX_WIDTH) {
  			settings->img_x = BUZ_MAX_WIDTH - settings->img_width;
  			err0++;
  		}
  		if (settings->img_y + settings->img_height > BUZ_MAX_HEIGHT / 2) {
  			settings->img_y = BUZ_MAX_HEIGHT / 2 - settings->img_height;
  			err0++;
  		}
  		if (settings->img_width % (16 * settings->HorDcm) != 0) {
  			settings->img_width -= settings->img_width % (16 * settings->HorDcm);
  			if (settings->img_width == 0)
  				settings->img_width = 16 * settings->HorDcm;
  			err0++;
  		}
  		if (settings->img_height % (8 * settings->VerDcm) != 0) {
  			settings->img_height -= settings->img_height % (8 * settings->VerDcm);
  			if (settings->img_height == 0)
  				settings->img_height = 8 * settings->VerDcm;
  			err0++;
  		}
  
  		if (!try && err0) {
  			dprintk(1,
  				KERN_ERR
  				"%s: %s - error in params for decimation = 0
  ",
  				ZR_DEVNAME(zr), __func__);
  			err++;
  		}
  		break;
  	default:
  		dprintk(1,
  			KERN_ERR
  			"%s: %s - decimation = %d, must be 0, 1, 2 or 4
  ",
  			ZR_DEVNAME(zr), __func__, settings->decimation);
  		err++;
  		break;
  	}
  
  	if (settings->jpg_comp.quality > 100)
  		settings->jpg_comp.quality = 100;
  	if (settings->jpg_comp.quality < 5)
  		settings->jpg_comp.quality = 5;
  	if (settings->jpg_comp.APPn < 0)
  		settings->jpg_comp.APPn = 0;
  	if (settings->jpg_comp.APPn > 15)
  		settings->jpg_comp.APPn = 15;
  	if (settings->jpg_comp.APP_len < 0)
  		settings->jpg_comp.APP_len = 0;
  	if (settings->jpg_comp.APP_len > 60)
  		settings->jpg_comp.APP_len = 60;
  	if (settings->jpg_comp.COM_len < 0)
  		settings->jpg_comp.COM_len = 0;
  	if (settings->jpg_comp.COM_len > 60)
  		settings->jpg_comp.COM_len = 60;
  	if (err)
  		return -EINVAL;
  	return 0;
  }
  
  void
  zoran_open_init_params (struct zoran *zr)
  {
  	int i;
  
  	/* User must explicitly set a window */
  	zr->overlay_settings.is_set = 0;
  	zr->overlay_mask = NULL;
  	zr->overlay_active = ZORAN_FREE;
  
  	zr->v4l_memgrab_active = 0;
  	zr->v4l_overlay_active = 0;
  	zr->v4l_grab_frame = NO_GRAB_ACTIVE;
  	zr->v4l_grab_seq = 0;
  	zr->v4l_settings.width = 192;
  	zr->v4l_settings.height = 144;
  	zr->v4l_settings.format = &zoran_formats[7];	/* YUY2 - YUV-4:2:2 packed */
  	zr->v4l_settings.bytesperline =
  	    zr->v4l_settings.width *
  	    ((zr->v4l_settings.format->depth + 7) / 8);
  
  	/* DMA ring stuff for V4L */
  	zr->v4l_pend_tail = 0;
  	zr->v4l_pend_head = 0;
  	zr->v4l_sync_tail = 0;
  	zr->v4l_buffers.active = ZORAN_FREE;
  	for (i = 0; i < VIDEO_MAX_FRAME; i++) {
  		zr->v4l_buffers.buffer[i].state = BUZ_STATE_USER;	/* nothing going on */
  	}
  	zr->v4l_buffers.allocated = 0;
  
  	for (i = 0; i < BUZ_MAX_FRAME; i++) {
  		zr->jpg_buffers.buffer[i].state = BUZ_STATE_USER;	/* nothing going on */
  	}
  	zr->jpg_buffers.active = ZORAN_FREE;
  	zr->jpg_buffers.allocated = 0;
  	/* Set necessary params and call zoran_check_jpg_settings to set the defaults */
  	zr->jpg_settings.decimation = 1;
  	zr->jpg_settings.jpg_comp.quality = 50;	/* default compression factor 8 */
  	if (zr->card.type != BUZ)
  		zr->jpg_settings.odd_even = 1;
  	else
  		zr->jpg_settings.odd_even = 0;
  	zr->jpg_settings.jpg_comp.APPn = 0;
  	zr->jpg_settings.jpg_comp.APP_len = 0;	/* No APPn marker */
  	memset(zr->jpg_settings.jpg_comp.APP_data, 0,
  	       sizeof(zr->jpg_settings.jpg_comp.APP_data));
  	zr->jpg_settings.jpg_comp.COM_len = 0;	/* No COM marker */
  	memset(zr->jpg_settings.jpg_comp.COM_data, 0,
  	       sizeof(zr->jpg_settings.jpg_comp.COM_data));
  	zr->jpg_settings.jpg_comp.jpeg_markers =
  	    V4L2_JPEG_MARKER_DHT | V4L2_JPEG_MARKER_DQT;
  	i = zoran_check_jpg_settings(zr, &zr->jpg_settings, 0);
  	if (i)
  		dprintk(1, KERN_ERR "%s: %s internal error
  ",
  			ZR_DEVNAME(zr), __func__);
  
  	clear_interrupt_counters(zr);
  	zr->testing = 0;
  }
  
  static void test_interrupts (struct zoran *zr)
  {
  	DEFINE_WAIT(wait);
  	int timeout, icr;
  
  	clear_interrupt_counters(zr);
  
  	zr->testing = 1;
  	icr = btread(ZR36057_ICR);
  	btwrite(0x78000000 | ZR36057_ICR_IntPinEn, ZR36057_ICR);
  	prepare_to_wait(&zr->test_q, &wait, TASK_INTERRUPTIBLE);
  	timeout = schedule_timeout(HZ);
  	finish_wait(&zr->test_q, &wait);
  	btwrite(0, ZR36057_ICR);
  	btwrite(0x78000000, ZR36057_ISR);
  	zr->testing = 0;
  	dprintk(5, KERN_INFO "%s: Testing interrupts...
  ", ZR_DEVNAME(zr));
  	if (timeout) {
  		dprintk(1, ": time spent: %d
  ", 1 * HZ - timeout);
  	}
  	if (zr36067_debug > 1)
  		print_interrupts(zr);
  	btwrite(icr, ZR36057_ICR);
  }
  
  static int zr36057_init (struct zoran *zr)
  {
  	int j, err;
  
  	dprintk(1,
  		KERN_INFO
  		"%s: %s - initializing card[%d], zr=%p
  ",
  		ZR_DEVNAME(zr), __func__, zr->id, zr);
  
  	/* default setup of all parameters which will persist between opens */
  	zr->user = 0;
  
  	init_waitqueue_head(&zr->v4l_capq);
  	init_waitqueue_head(&zr->jpg_capq);
  	init_waitqueue_head(&zr->test_q);
  	zr->jpg_buffers.allocated = 0;
  	zr->v4l_buffers.allocated = 0;
  
  	zr->vbuf_base = (void *) vidmem;
  	zr->vbuf_width = 0;
  	zr->vbuf_height = 0;
  	zr->vbuf_depth = 0;
  	zr->vbuf_bytesperline = 0;
  
  	/* Avoid nonsense settings from user for default input/norm */
  	if (default_norm < 0 || default_norm > 2)
  		default_norm = 0;
  	if (default_norm == 0) {
  		zr->norm = V4L2_STD_PAL;
  		zr->timing = zr->card.tvn[0];
  	} else if (default_norm == 1) {
  		zr->norm = V4L2_STD_NTSC;
  		zr->timing = zr->card.tvn[1];
  	} else {
  		zr->norm = V4L2_STD_SECAM;
  		zr->timing = zr->card.tvn[2];
  	}
  	if (zr->timing == NULL) {
  		dprintk(1,
  			KERN_WARNING
  			"%s: %s - default TV standard not supported by hardware. PAL will be used.
  ",
  			ZR_DEVNAME(zr), __func__);
  		zr->norm = V4L2_STD_PAL;
  		zr->timing = zr->card.tvn[0];
  	}
  
  	if (default_input > zr->card.inputs-1) {
  		dprintk(1,
  			KERN_WARNING
  			"%s: default_input value %d out of range (0-%d)
  ",
  			ZR_DEVNAME(zr), default_input, zr->card.inputs-1);
  		default_input = 0;
  	}
  	zr->input = default_input;
  
  	/* default setup (will be repeated at every open) */
  	zoran_open_init_params(zr);
  
  	/* allocate memory *before* doing anything to the hardware
  	 * in case allocation fails */
  	zr->stat_com = kzalloc(BUZ_NUM_STAT_COM * 4, GFP_KERNEL);
  	zr->video_dev = video_device_alloc();
  	if (!zr->stat_com || !zr->video_dev) {
  		dprintk(1,
  			KERN_ERR
  			"%s: %s - kmalloc (STAT_COM) failed
  ",
  			ZR_DEVNAME(zr), __func__);
  		err = -ENOMEM;
  		goto exit_free;
  	}
  	for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
  		zr->stat_com[j] = cpu_to_le32(1); /* mark as unavailable to zr36057 */
  	}
  
  	/*
  	 *   Now add the template and register the device unit.
  	 */
  	*zr->video_dev = zoran_template;
  	zr->video_dev->v4l2_dev = &zr->v4l2_dev;
  	zr->video_dev->lock = &zr->lock;
  	strcpy(zr->video_dev->name, ZR_DEVNAME(zr));
  	/* It's not a mem2mem device, but you can both capture and output from
  	   one and the same device. This should really be split up into two
  	   device nodes, but that's a job for another day. */
  	zr->video_dev->vfl_dir = VFL_DIR_M2M;
  	err = video_register_device(zr->video_dev, VFL_TYPE_GRABBER, video_nr[zr->id]);
  	if (err < 0)
  		goto exit_free;
  	video_set_drvdata(zr->video_dev, zr);
  
  	zoran_init_hardware(zr);
  	if (zr36067_debug > 2)
  		detect_guest_activity(zr);
  	test_interrupts(zr);
  	if (!pass_through) {
  		decoder_call(zr, video, s_stream, 0);
  		encoder_call(zr, video, s_routing, 2, 0, 0);
  	}
  
  	zr->zoran_proc = NULL;
  	zr->initialized = 1;
  	return 0;
  
  exit_free:
  	kfree(zr->stat_com);
  	kfree(zr->video_dev);
  	return err;
  }
  
  static void zoran_remove(struct pci_dev *pdev)
  {
  	struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev);
  	struct zoran *zr = to_zoran(v4l2_dev);
  
  	if (!zr->initialized)
  		goto exit_free;
  
  	/* unregister videocodec bus */
  	if (zr->codec) {
  		struct videocodec_master *master = zr->codec->master_data;
  
  		videocodec_detach(zr->codec);
  		kfree(master);
  	}
  	if (zr->vfe) {
  		struct videocodec_master *master = zr->vfe->master_data;
  
  		videocodec_detach(zr->vfe);
  		kfree(master);
  	}
  
  	/* unregister i2c bus */
  	zoran_unregister_i2c(zr);
  	/* disable PCI bus-mastering */
  	zoran_set_pci_master(zr, 0);
  	/* put chip into reset */
  	btwrite(0, ZR36057_SPGPPCR);
  	free_irq(zr->pci_dev->irq, zr);
  	/* unmap and free memory */
  	kfree(zr->stat_com);
  	zoran_proc_cleanup(zr);
  	iounmap(zr->zr36057_mem);
  	pci_disable_device(zr->pci_dev);
  	video_unregister_device(zr->video_dev);
  exit_free:
  	v4l2_ctrl_handler_free(&zr->hdl);
  	v4l2_device_unregister(&zr->v4l2_dev);
  	kfree(zr);
  }
  
  void
  zoran_vdev_release (struct video_device *vdev)
  {
  	kfree(vdev);
  }
  
  static struct videocodec_master *zoran_setup_videocodec(struct zoran *zr,
  							int type)
  {
  	struct videocodec_master *m = NULL;
  
  	m = kmalloc(sizeof(struct videocodec_master), GFP_KERNEL);
  	if (!m) {
  		dprintk(1, KERN_ERR "%s: %s - no memory
  ",
  			ZR_DEVNAME(zr), __func__);
  		return m;
  	}
  
  	/* magic and type are unused for master struct. Makes sense only at
  	   codec structs.
  	   In the past, .type were initialized to the old V4L1 .hardware
  	   value, as VID_HARDWARE_ZR36067
  	 */
  	m->magic = 0L;
  	m->type = 0;
  
  	m->flags = CODEC_FLAG_ENCODER | CODEC_FLAG_DECODER;
  	strlcpy(m->name, ZR_DEVNAME(zr), sizeof(m->name));
  	m->data = zr;
  
  	switch (type)
  	{
  	case CODEC_TYPE_ZR36060:
  		m->readreg = zr36060_read;
  		m->writereg = zr36060_write;
  		m->flags |= CODEC_FLAG_JPEG | CODEC_FLAG_VFE;
  		break;
  	case CODEC_TYPE_ZR36050:
  		m->readreg = zr36050_read;
  		m->writereg = zr36050_write;
  		m->flags |= CODEC_FLAG_JPEG;
  		break;
  	case CODEC_TYPE_ZR36016:
  		m->readreg = zr36016_read;
  		m->writereg = zr36016_write;
  		m->flags |= CODEC_FLAG_VFE;
  		break;
  	}
  
  	return m;
  }
  
  static void zoran_subdev_notify(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
  {
  	struct zoran *zr = to_zoran(sd->v4l2_dev);
  
  	/* Bt819 needs to reset its FIFO buffer using #FRST pin and
  	   LML33 card uses GPIO(7) for that. */
  	if (cmd == BT819_FIFO_RESET_LOW)
  		GPIO(zr, 7, 0);
  	else if (cmd == BT819_FIFO_RESET_HIGH)
  		GPIO(zr, 7, 1);
  }
  
  /*
   *   Scan for a Buz card (actually for the PCI controller ZR36057),
   *   request the irq and map the io memory
   */
  static int zoran_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
  {
  	unsigned char latency, need_latency;
  	struct zoran *zr;
  	int result;
  	struct videocodec_master *master_vfe = NULL;
  	struct videocodec_master *master_codec = NULL;
  	int card_num;
  	char *codec_name, *vfe_name;
  	unsigned int nr;
  
  
  	nr = zoran_num++;
  	if (nr >= BUZ_MAX) {
  		dprintk(1, KERN_ERR "%s: driver limited to %d card(s) maximum
  ",
  			ZORAN_NAME, BUZ_MAX);
  		return -ENOENT;
  	}
  
  	zr = kzalloc(sizeof(struct zoran), GFP_KERNEL);
  	if (!zr) {
  		dprintk(1, KERN_ERR "%s: %s - kzalloc failed
  ",
  			ZORAN_NAME, __func__);
  		return -ENOMEM;
  	}
  	zr->v4l2_dev.notify = zoran_subdev_notify;
  	if (v4l2_device_register(&pdev->dev, &zr->v4l2_dev))
  		goto zr_free_mem;
  	zr->pci_dev = pdev;
  	zr->id = nr;
  	snprintf(ZR_DEVNAME(zr), sizeof(ZR_DEVNAME(zr)), "MJPEG[%u]", zr->id);
  	if (v4l2_ctrl_handler_init(&zr->hdl, 10))
  		goto zr_unreg;
  	zr->v4l2_dev.ctrl_handler = &zr->hdl;
  	spin_lock_init(&zr->spinlock);
  	mutex_init(&zr->lock);
  	if (pci_enable_device(pdev))
  		goto zr_unreg;
  	zr->revision = zr->pci_dev->revision;
  
  	dprintk(1,
  		KERN_INFO
  		"%s: Zoran ZR360%c7 (rev %d), irq: %d, memory: 0x%08llx
  ",
  		ZR_DEVNAME(zr), zr->revision < 2 ? '5' : '6', zr->revision,
  		zr->pci_dev->irq, (uint64_t)pci_resource_start(zr->pci_dev, 0));
  	if (zr->revision >= 2) {
  		dprintk(1,
  			KERN_INFO
  			"%s: Subsystem vendor=0x%04x id=0x%04x
  ",
  			ZR_DEVNAME(zr), zr->pci_dev->subsystem_vendor,
  			zr->pci_dev->subsystem_device);
  	}
  
  	/* Use auto-detected card type? */
  	if (card[nr] == -1) {
  		if (zr->revision < 2) {
  			dprintk(1,
  				KERN_ERR
  				"%s: No card type specified, please use the card=X module parameter
  ",
  				ZR_DEVNAME(zr));
  			dprintk(1,
  				KERN_ERR
  				"%s: It is not possible to auto-detect ZR36057 based cards
  ",
  				ZR_DEVNAME(zr));
  			goto zr_unreg;
  		}
  
  		card_num = ent->driver_data;
  		if (card_num >= NUM_CARDS) {
  			dprintk(1,
  				KERN_ERR
  				"%s: Unknown card, try specifying card=X module parameter
  ",
  				ZR_DEVNAME(zr));
  			goto zr_unreg;
  		}
  		dprintk(3,
  			KERN_DEBUG
  			"%s: %s() - card %s detected
  ",
  			ZR_DEVNAME(zr), __func__, zoran_cards[card_num].name);
  	} else {
  		card_num = card[nr];
  		if (card_num >= NUM_CARDS || card_num < 0) {
  			dprintk(1,
  				KERN_ERR
  				"%s: User specified card type %d out of range (0 .. %d)
  ",
  				ZR_DEVNAME(zr), card_num, NUM_CARDS - 1);
  			goto zr_unreg;
  		}
  	}
  
  	/* even though we make this a non pointer and thus
  	 * theoretically allow for making changes to this struct
  	 * on a per-individual card basis at runtime, this is
  	 * strongly discouraged. This structure is intended to
  	 * keep general card information, no settings or anything */
  	zr->card = zoran_cards[card_num];
  	snprintf(ZR_DEVNAME(zr), sizeof(ZR_DEVNAME(zr)),
  		 "%s[%u]", zr->card.name, zr->id);
  
  	zr->zr36057_mem = pci_ioremap_bar(zr->pci_dev, 0);
  	if (!zr->zr36057_mem) {
  		dprintk(1, KERN_ERR "%s: %s() - ioremap failed
  ",
  			ZR_DEVNAME(zr), __func__);
  		goto zr_unreg;
  	}
  
  	result = request_irq(zr->pci_dev->irq, zoran_irq,
  			     IRQF_SHARED, ZR_DEVNAME(zr), zr);
  	if (result < 0) {
  		if (result == -EINVAL) {
  			dprintk(1,
  				KERN_ERR
  				"%s: %s - bad irq number or handler
  ",
  				ZR_DEVNAME(zr), __func__);
  		} else if (result == -EBUSY) {
  			dprintk(1,
  				KERN_ERR
  				"%s: %s - IRQ %d busy, change your PnP config in BIOS
  ",
  				ZR_DEVNAME(zr), __func__, zr->pci_dev->irq);
  		} else {
  			dprintk(1,
  				KERN_ERR
  				"%s: %s - can't assign irq, error code %d
  ",
  				ZR_DEVNAME(zr), __func__, result);
  		}
  		goto zr_unmap;
  	}
  
  	/* set PCI latency timer */
  	pci_read_config_byte(zr->pci_dev, PCI_LATENCY_TIMER,
  			     &latency);
  	need_latency = zr->revision > 1 ? 32 : 48;
  	if (latency != need_latency) {
  		dprintk(2, KERN_INFO "%s: Changing PCI latency from %d to %d
  ",
  			ZR_DEVNAME(zr), latency, need_latency);
  		pci_write_config_byte(zr->pci_dev, PCI_LATENCY_TIMER,
  				      need_latency);
  	}
  
  	zr36057_restart(zr);
  	/* i2c */
  	dprintk(2, KERN_INFO "%s: Initializing i2c bus...
  ",
  		ZR_DEVNAME(zr));
  
  	if (zoran_register_i2c(zr) < 0) {
  		dprintk(1, KERN_ERR "%s: %s - can't initialize i2c bus
  ",
  			ZR_DEVNAME(zr), __func__);
  		goto zr_free_irq;
  	}
  
  	zr->decoder = v4l2_i2c_new_subdev(&zr->v4l2_dev,
  		&zr->i2c_adapter, zr->card.i2c_decoder,
  		0, zr->card.addrs_decoder);
  
  	if (zr->card.i2c_encoder)
  		zr->encoder = v4l2_i2c_new_subdev(&zr->v4l2_dev,
  			&zr->i2c_adapter, zr->card.i2c_encoder,
  			0, zr->card.addrs_encoder);
  
  	dprintk(2,
  		KERN_INFO "%s: Initializing videocodec bus...
  ",
  		ZR_DEVNAME(zr));
  
  	if (zr->card.video_codec) {
  		codec_name = codecid_to_modulename(zr->card.video_codec);
  		if (codec_name) {
  			result = request_module(codec_name);
  			if (result) {
  				dprintk(1,
  					KERN_ERR
  					"%s: failed to load modules %s: %d
  ",
  					ZR_DEVNAME(zr), codec_name, result);
  			}
  		}
  	}
  	if (zr->card.video_vfe) {
  		vfe_name = codecid_to_modulename(zr->card.video_vfe);
  		if (vfe_name) {
  			result = request_module(vfe_name);
  			if (result < 0) {
  				dprintk(1,
  					KERN_ERR
  					"%s: failed to load modules %s: %d
  ",
  					ZR_DEVNAME(zr), vfe_name, result);
  			}
  		}
  	}
  
  	/* reset JPEG codec */
  	jpeg_codec_sleep(zr, 1);
  	jpeg_codec_reset(zr);
  	/* video bus enabled */
  	/* display codec revision */
  	if (zr->card.video_codec != 0) {
  		master_codec = zoran_setup_videocodec(zr, zr->card.video_codec);
  		if (!master_codec)
  			goto zr_unreg_i2c;
  		zr->codec = videocodec_attach(master_codec);
  		if (!zr->codec) {
  			dprintk(1, KERN_ERR "%s: %s - no codec found
  ",
  				ZR_DEVNAME(zr), __func__);
  			goto zr_free_codec;
  		}
  		if (zr->codec->type != zr->card.video_codec) {
  			dprintk(1, KERN_ERR "%s: %s - wrong codec
  ",
  				ZR_DEVNAME(zr), __func__);
  			goto zr_detach_codec;
  		}
  	}
  	if (zr->card.video_vfe != 0) {
  		master_vfe = zoran_setup_videocodec(zr, zr->card.video_vfe);
  		if (!master_vfe)
  			goto zr_detach_codec;
  		zr->vfe = videocodec_attach(master_vfe);
  		if (!zr->vfe) {
  			dprintk(1, KERN_ERR "%s: %s - no VFE found
  ",
  				ZR_DEVNAME(zr), __func__);
  			goto zr_free_vfe;
  		}
  		if (zr->vfe->type != zr->card.video_vfe) {
  			dprintk(1, KERN_ERR "%s: %s = wrong VFE
  ",
  				ZR_DEVNAME(zr), __func__);
  			goto zr_detach_vfe;
  		}
  	}
  
  	/* take care of Natoma chipset and a revision 1 zr36057 */
  	if ((pci_pci_problems & PCIPCI_NATOMA) && zr->revision <= 1) {
  		zr->jpg_buffers.need_contiguous = 1;
  		dprintk(1, KERN_INFO
  			"%s: ZR36057/Natoma bug, max. buffer size is 128K
  ",
  			ZR_DEVNAME(zr));
  	}
  
  	if (zr36057_init(zr) < 0)
  		goto zr_detach_vfe;
  
  	zoran_proc_init(zr);
  
  	return 0;
  
  zr_detach_vfe:
  	videocodec_detach(zr->vfe);
  zr_free_vfe:
  	kfree(master_vfe);
  zr_detach_codec:
  	videocodec_detach(zr->codec);
  zr_free_codec:
  	kfree(master_codec);
  zr_unreg_i2c:
  	zoran_unregister_i2c(zr);
  zr_free_irq:
  	btwrite(0, ZR36057_SPGPPCR);
  	free_irq(zr->pci_dev->irq, zr);
  zr_unmap:
  	iounmap(zr->zr36057_mem);
  zr_unreg:
  	v4l2_ctrl_handler_free(&zr->hdl);
  	v4l2_device_unregister(&zr->v4l2_dev);
  zr_free_mem:
  	kfree(zr);
  
  	return -ENODEV;
  }
  
  static struct pci_driver zoran_driver = {
  	.name = "zr36067",
  	.id_table = zr36067_pci_tbl,
  	.probe = zoran_probe,
  	.remove = zoran_remove,
  };
  
  static int __init zoran_init(void)
  {
  	int res;
  
  	printk(KERN_INFO "Zoran MJPEG board driver version %s
  ",
  	       ZORAN_VERSION);
  
  	/* check the parameters we have been given, adjust if necessary */
  	if (v4l_nbufs < 2)
  		v4l_nbufs = 2;
  	if (v4l_nbufs > VIDEO_MAX_FRAME)
  		v4l_nbufs = VIDEO_MAX_FRAME;
  	/* The user specfies the in KB, we want them in byte
  	 * (and page aligned) */
  	v4l_bufsize = PAGE_ALIGN(v4l_bufsize * 1024);
  	if (v4l_bufsize < 32768)
  		v4l_bufsize = 32768;
  	/* 2 MB is arbitrary but sufficient for the maximum possible images */
  	if (v4l_bufsize > 2048 * 1024)
  		v4l_bufsize = 2048 * 1024;
  	if (jpg_nbufs < 4)
  		jpg_nbufs = 4;
  	if (jpg_nbufs > BUZ_MAX_FRAME)
  		jpg_nbufs = BUZ_MAX_FRAME;
  	jpg_bufsize = PAGE_ALIGN(jpg_bufsize * 1024);
  	if (jpg_bufsize < 8192)
  		jpg_bufsize = 8192;
  	if (jpg_bufsize > (512 * 1024))
  		jpg_bufsize = 512 * 1024;
  	/* Use parameter for vidmem or try to find a video card */
  	if (vidmem) {
  		dprintk(1,
  			KERN_INFO
  			"%s: Using supplied video memory base address @ 0x%lx
  ",
  			ZORAN_NAME, vidmem);
  	}
  
  	/* some mainboards might not do PCI-PCI data transfer well */
  	if (pci_pci_problems & (PCIPCI_FAIL|PCIAGP_FAIL|PCIPCI_ALIMAGIK)) {
  		dprintk(1,
  			KERN_WARNING
  			"%s: chipset does not support reliable PCI-PCI DMA
  ",
  			ZORAN_NAME);
  	}
  
  	res = pci_register_driver(&zoran_driver);
  	if (res) {
  		dprintk(1,
  			KERN_ERR
  			"%s: Unable to register ZR36057 driver
  ",
  			ZORAN_NAME);
  		return res;
  	}
  
  	return 0;
  }
  
  static void __exit zoran_exit(void)
  {
  	pci_unregister_driver(&zoran_driver);
  }
  
  module_init(zoran_init);
  module_exit(zoran_exit);