![Markus Rechberger](/assets/img/avatar_default.png)
Fixed em28xx based system lockup, device needs to be initialized before starting the isoc transfer otherwise the system will completly lock up. Signed-off-by: Markus Rechberger <mrechberger@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2015 lines
49 KiB
C
2015 lines
49 KiB
C
/*
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em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB video capture devices
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Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
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Markus Rechberger <mrechberger@gmail.com>
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Mauro Carvalho Chehab <mchehab@brturbo.com.br>
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Sascha Sommer <saschasommer@freenet.de>
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Some parts based on SN9C10x PC Camera Controllers GPL driver made
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by Luca Risolia <luca.risolia@studio.unibo.it>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/init.h>
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#include <linux/list.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/usb.h>
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#include <linux/i2c.h>
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#include <linux/version.h>
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#include <linux/video_decoder.h>
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#include <linux/mutex.h>
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#include "em28xx.h"
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#include <media/tuner.h>
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#include <media/v4l2-common.h>
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#define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \
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"Markus Rechberger <mrechberger@gmail.com>, " \
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"Mauro Carvalho Chehab <mchehab@brturbo.com.br>, " \
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"Sascha Sommer <saschasommer@freenet.de>"
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#define DRIVER_NAME "em28xx"
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#define DRIVER_DESC "Empia em28xx based USB video device driver"
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#define EM28XX_VERSION_CODE KERNEL_VERSION(0, 0, 1)
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#define em28xx_videodbg(fmt, arg...) do {\
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if (video_debug) \
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printk(KERN_INFO "%s %s :"fmt, \
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dev->name, __FUNCTION__ , ##arg); } while (0)
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MODULE_AUTHOR(DRIVER_AUTHOR);
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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static LIST_HEAD(em28xx_devlist);
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static unsigned int card[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
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module_param_array(card, int, NULL, 0444);
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MODULE_PARM_DESC(card,"card type");
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static int tuner = -1;
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module_param(tuner, int, 0444);
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MODULE_PARM_DESC(tuner, "tuner type");
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static unsigned int video_debug = 0;
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module_param(video_debug,int,0644);
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MODULE_PARM_DESC(video_debug,"enable debug messages [video]");
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/* supported tv norms */
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static struct em28xx_tvnorm tvnorms[] = {
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{
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.name = "PAL",
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.id = V4L2_STD_PAL,
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.mode = VIDEO_MODE_PAL,
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}, {
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.name = "NTSC",
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.id = V4L2_STD_NTSC,
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.mode = VIDEO_MODE_NTSC,
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}, {
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.name = "SECAM",
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.id = V4L2_STD_SECAM,
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.mode = VIDEO_MODE_SECAM,
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}, {
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.name = "PAL-M",
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.id = V4L2_STD_PAL_M,
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.mode = VIDEO_MODE_PAL,
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}
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};
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static const unsigned char saa7114_i2c_init[] = {
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0x00,0x00,0x01,0x08,0x02,0xc4,0x03,0x30,0x04,0x90,0x05,0x90,0x06,0xeb,0x07,0xe0,
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0x08,0x88,0x09,0x40,0x0a,0x80,0x0b,0x44,0x0c,0x40,0x0d,0x00,0x0e,0x81,0x0f,0x2a,
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0x10,0x06,0x11,0x00,0x12,0xc8,0x13,0x80,0x14,0x00,0x15,0x11,0x16,0x01,0x17,0x42,
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0x18,0x40,0x19,0x80,0x40,0x00,0x41,0xff,0x42,0xff,0x43,0xff,0x44,0xff,0x45,0xff,
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0x46,0xff,0x47,0xff,0x48,0xff,0x49,0xff,0x4a,0xff,0x4b,0xff,0x4c,0xff,0x4d,0xff,
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0x4e,0xff,0x4f,0xff,0x50,0xff,0x51,0xff,0x52,0xff,0x53,0xff,0x54,0x5f,0x55,0xff,
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0x56,0xff,0x57,0xff,0x58,0x00,0x59,0x47,0x5a,0x03,0x5b,0x03,0x5d,0x3e,0x5e,0x00,
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0x80,0x1c,0x83,0x01,0x84,0xa5,0x85,0x10,0x86,0x45,0x87,0x41,0x88,0xf0,0x88,0x00,
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0x88,0xf0,0x90,0x00,0x91,0x08,0x92,0x00,0x93,0x80,0x94,0x08,0x95,0x00,0x96,0xc0,
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0x97,0x02,0x98,0x13,0x99,0x00,0x9a,0x38,0x9b,0x01,0x9c,0x80,0x9d,0x02,0x9e,0x06,
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0x9f,0x01,0xa0,0x01,0xa1,0x00,0xa2,0x00,0xa4,0x80,0xa5,0x36,0xa6,0x36,0xa8,0x67,
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0xa9,0x04,0xaa,0x00,0xac,0x33,0xad,0x02,0xae,0x00,0xb0,0xcd,0xb1,0x04,0xb2,0xcd,
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0xb3,0x04,0xb4,0x01,0xb8,0x00,0xb9,0x00,0xba,0x00,0xbb,0x00,0xbc,0x00,0xbd,0x00,
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0xbe,0x00,0xbf,0x00
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};
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#define TVNORMS ARRAY_SIZE(tvnorms)
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/* supported controls */
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/* Common to all boards */
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static struct v4l2_queryctrl em28xx_qctrl[] = {
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{
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.id = V4L2_CID_AUDIO_VOLUME,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "Volume",
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.minimum = 0x0,
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.maximum = 0x1f,
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.step = 0x1,
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.default_value = 0x1f,
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.flags = 0,
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},{
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.id = V4L2_CID_AUDIO_MUTE,
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.type = V4L2_CTRL_TYPE_BOOLEAN,
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.name = "Mute",
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.minimum = 0,
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.maximum = 1,
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.step = 1,
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.default_value = 1,
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.flags = 0,
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}
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};
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/* FIXME: These are specific to saa711x - should be moved to its code */
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static struct v4l2_queryctrl saa711x_qctrl[] = {
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{
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.id = V4L2_CID_BRIGHTNESS,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "Brightness",
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.minimum = -128,
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.maximum = 127,
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.step = 1,
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.default_value = 0,
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.flags = 0,
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},{
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.id = V4L2_CID_CONTRAST,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "Contrast",
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.minimum = 0x0,
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.maximum = 0x1f,
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.step = 0x1,
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.default_value = 0x10,
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.flags = 0,
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},{
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.id = V4L2_CID_SATURATION,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "Saturation",
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.minimum = 0x0,
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.maximum = 0x1f,
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.step = 0x1,
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.default_value = 0x10,
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.flags = 0,
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},{
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.id = V4L2_CID_RED_BALANCE,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "Red chroma balance",
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.minimum = -128,
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.maximum = 127,
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.step = 1,
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.default_value = 0,
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.flags = 0,
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},{
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.id = V4L2_CID_BLUE_BALANCE,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "Blue chroma balance",
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.minimum = -128,
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.maximum = 127,
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.step = 1,
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.default_value = 0,
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.flags = 0,
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},{
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.id = V4L2_CID_GAMMA,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "Gamma",
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.minimum = 0x0,
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.maximum = 0x3f,
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.step = 0x1,
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.default_value = 0x20,
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.flags = 0,
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}
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};
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static struct usb_driver em28xx_usb_driver;
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static DEFINE_MUTEX(em28xx_sysfs_lock);
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static DECLARE_RWSEM(em28xx_disconnect);
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/********************* v4l2 interface ******************************************/
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/*
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* em28xx_config()
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* inits registers with sane defaults
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*/
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static int em28xx_config(struct em28xx *dev)
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{
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/* Sets I2C speed to 100 KHz */
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em28xx_write_regs_req(dev, 0x00, 0x06, "\x40", 1);
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/* enable vbi capturing */
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em28xx_audio_usb_mute(dev, 1);
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dev->mute = 1; /* maybe not the right place... */
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dev->volume = 0x1f;
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em28xx_audio_analog_set(dev);
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em28xx_audio_analog_setup(dev);
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em28xx_outfmt_set_yuv422(dev);
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em28xx_colorlevels_set_default(dev);
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em28xx_compression_disable(dev);
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return 0;
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}
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/*
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* em28xx_config_i2c()
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* configure i2c attached devices
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*/
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static void em28xx_config_i2c(struct em28xx *dev)
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{
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struct v4l2_frequency f;
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struct video_decoder_init em28xx_vdi = {.data = NULL };
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/* configure decoder */
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if(dev->model == EM2820_BOARD_MSI_VOX_USB_2){
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em28xx_vdi.data=saa7114_i2c_init;
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em28xx_vdi.len=sizeof(saa7114_i2c_init);
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}
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em28xx_i2c_call_clients(dev, DECODER_INIT, &em28xx_vdi);
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em28xx_i2c_call_clients(dev, DECODER_SET_INPUT, &dev->ctl_input);
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/* em28xx_i2c_call_clients(dev,DECODER_SET_PICTURE, &dev->vpic); */
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/* em28xx_i2c_call_clients(dev,DECODER_SET_NORM,&dev->tvnorm->id); */
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/* em28xx_i2c_call_clients(dev,DECODER_ENABLE_OUTPUT,&output); */
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/* em28xx_i2c_call_clients(dev,DECODER_DUMP, NULL); */
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/* configure tuner */
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f.tuner = 0;
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f.type = V4L2_TUNER_ANALOG_TV;
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f.frequency = 9076; /* FIXME:remove magic number */
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dev->ctl_freq = f.frequency;
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em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, &f);
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/* configure tda9887 */
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/* em28xx_i2c_call_clients(dev,VIDIOC_S_STD,&dev->tvnorm->id); */
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}
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/*
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* em28xx_empty_framequeues()
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* prepare queues for incoming and outgoing frames
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*/
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static void em28xx_empty_framequeues(struct em28xx *dev)
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{
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u32 i;
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INIT_LIST_HEAD(&dev->inqueue);
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INIT_LIST_HEAD(&dev->outqueue);
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for (i = 0; i < EM28XX_NUM_FRAMES; i++) {
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dev->frame[i].state = F_UNUSED;
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dev->frame[i].buf.bytesused = 0;
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}
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}
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static void video_mux(struct em28xx *dev, int index)
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{
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int input, ainput;
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input = INPUT(index)->vmux;
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dev->ctl_input = index;
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dev->ctl_ainput = INPUT(index)->amux;
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em28xx_i2c_call_clients(dev, DECODER_SET_INPUT, &input);
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em28xx_videodbg("Setting input index=%d, vmux=%d, amux=%d\n",index,input,dev->ctl_ainput);
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if (dev->has_msp34xx) {
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if (dev->i2s_speed)
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em28xx_i2c_call_clients(dev, VIDIOC_INT_I2S_CLOCK_FREQ, &dev->i2s_speed);
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em28xx_i2c_call_clients(dev, VIDIOC_S_AUDIO, &dev->ctl_ainput);
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ainput = EM28XX_AUDIO_SRC_TUNER;
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em28xx_audio_source(dev, ainput);
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} else {
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switch (dev->ctl_ainput) {
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case 0:
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ainput = EM28XX_AUDIO_SRC_TUNER;
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break;
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default:
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ainput = EM28XX_AUDIO_SRC_LINE;
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}
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em28xx_audio_source(dev, ainput);
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}
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}
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/*
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* em28xx_v4l2_open()
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* inits the device and starts isoc transfer
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*/
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static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
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{
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int minor = iminor(inode);
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int errCode = 0;
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struct em28xx *h,*dev = NULL;
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struct list_head *list;
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list_for_each(list,&em28xx_devlist) {
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h = list_entry(list, struct em28xx, devlist);
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if (h->vdev->minor == minor) {
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dev = h;
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}
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}
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filp->private_data=dev;
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em28xx_videodbg("users=%d\n", dev->users);
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if (!down_read_trylock(&em28xx_disconnect))
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return -ERESTARTSYS;
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if (dev->users) {
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em28xx_warn("this driver can be opened only once\n");
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up_read(&em28xx_disconnect);
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return -EBUSY;
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}
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/* if(dev->vbi_dev->minor == minor){
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dev->type=V4L2_BUF_TYPE_VBI_CAPTURE;
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}*/
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if (dev->vdev->minor == minor) {
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dev->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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}
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init_MUTEX(&dev->fileop_lock); /* to 1 == available */
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spin_lock_init(&dev->queue_lock);
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init_waitqueue_head(&dev->wait_frame);
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init_waitqueue_head(&dev->wait_stream);
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down(&dev->lock);
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em28xx_set_alternate(dev);
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dev->width = norm_maxw(dev);
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dev->height = norm_maxh(dev);
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dev->frame_size = dev->width * dev->height * 2;
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dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
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dev->bytesperline = dev->width * 2;
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dev->hscale = 0;
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dev->vscale = 0;
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em28xx_capture_start(dev, 1);
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em28xx_resolution_set(dev);
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/* device needs to be initialized before isoc transfer */
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video_mux(dev, 0);
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/* start the transfer */
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errCode = em28xx_init_isoc(dev);
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if (errCode)
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goto err;
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dev->users++;
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filp->private_data = dev;
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dev->io = IO_NONE;
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dev->stream = STREAM_OFF;
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dev->num_frames = 0;
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/* prepare queues */
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em28xx_empty_framequeues(dev);
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dev->state |= DEV_INITIALIZED;
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video_mux(dev, 0);
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err:
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up(&dev->lock);
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up_read(&em28xx_disconnect);
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return errCode;
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}
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/*
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* em28xx_realease_resources()
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* unregisters the v4l2,i2c and usb devices
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* called when the device gets disconected or at module unload
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*/
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static void em28xx_release_resources(struct em28xx *dev)
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{
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mutex_lock(&em28xx_sysfs_lock);
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em28xx_info("V4L2 device /dev/video%d deregistered\n",
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dev->vdev->minor);
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list_del(&dev->devlist);
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video_unregister_device(dev->vdev);
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/* video_unregister_device(dev->vbi_dev); */
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em28xx_i2c_unregister(dev);
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usb_put_dev(dev->udev);
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mutex_unlock(&em28xx_sysfs_lock);
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}
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/*
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* em28xx_v4l2_close()
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* stops streaming and deallocates all resources allocated by the v4l2 calls and ioctls
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*/
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static int em28xx_v4l2_close(struct inode *inode, struct file *filp)
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{
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int errCode;
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struct em28xx *dev=filp->private_data;
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em28xx_videodbg("users=%d\n", dev->users);
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down(&dev->lock);
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em28xx_uninit_isoc(dev);
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em28xx_release_buffers(dev);
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/* the device is already disconnect, free the remaining resources */
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if (dev->state & DEV_DISCONNECTED) {
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em28xx_release_resources(dev);
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up(&dev->lock);
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kfree(dev);
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return 0;
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}
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/* set alternate 0 */
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dev->alt = 0;
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em28xx_videodbg("setting alternate 0\n");
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errCode = usb_set_interface(dev->udev, 0, 0);
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if (errCode < 0) {
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em28xx_errdev ("cannot change alternate number to 0 (error=%i)\n",
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errCode);
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}
|
|
|
|
dev->users--;
|
|
wake_up_interruptible_nr(&dev->open, 1);
|
|
up(&dev->lock);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* em28xx_v4l2_read()
|
|
* will allocate buffers when called for the first time
|
|
*/
|
|
static ssize_t
|
|
em28xx_v4l2_read(struct file *filp, char __user * buf, size_t count,
|
|
loff_t * f_pos)
|
|
{
|
|
struct em28xx_frame_t *f, *i;
|
|
unsigned long lock_flags;
|
|
int ret = 0;
|
|
struct em28xx *dev = filp->private_data;
|
|
|
|
if (down_interruptible(&dev->fileop_lock))
|
|
return -ERESTARTSYS;
|
|
|
|
if (dev->state & DEV_DISCONNECTED) {
|
|
em28xx_videodbg("device not present\n");
|
|
up(&dev->fileop_lock);
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (dev->state & DEV_MISCONFIGURED) {
|
|
em28xx_videodbg("device misconfigured; close and open it again\n");
|
|
up(&dev->fileop_lock);
|
|
return -EIO;
|
|
}
|
|
|
|
if (dev->io == IO_MMAP) {
|
|
em28xx_videodbg ("IO method is set to mmap; close and open"
|
|
" the device again to choose the read method\n");
|
|
up(&dev->fileop_lock);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (dev->io == IO_NONE) {
|
|
if (!em28xx_request_buffers(dev, EM28XX_NUM_READ_FRAMES)) {
|
|
em28xx_errdev("read failed, not enough memory\n");
|
|
up(&dev->fileop_lock);
|
|
return -ENOMEM;
|
|
}
|
|
dev->io = IO_READ;
|
|
dev->stream = STREAM_ON;
|
|
em28xx_queue_unusedframes(dev);
|
|
}
|
|
|
|
if (!count) {
|
|
up(&dev->fileop_lock);
|
|
return 0;
|
|
}
|
|
|
|
if (list_empty(&dev->outqueue)) {
|
|
if (filp->f_flags & O_NONBLOCK) {
|
|
up(&dev->fileop_lock);
|
|
return -EAGAIN;
|
|
}
|
|
ret = wait_event_interruptible
|
|
(dev->wait_frame,
|
|
(!list_empty(&dev->outqueue)) ||
|
|
(dev->state & DEV_DISCONNECTED));
|
|
if (ret) {
|
|
up(&dev->fileop_lock);
|
|
return ret;
|
|
}
|
|
if (dev->state & DEV_DISCONNECTED) {
|
|
up(&dev->fileop_lock);
|
|
return -ENODEV;
|
|
}
|
|
}
|
|
|
|
f = list_entry(dev->outqueue.prev, struct em28xx_frame_t, frame);
|
|
|
|
spin_lock_irqsave(&dev->queue_lock, lock_flags);
|
|
list_for_each_entry(i, &dev->outqueue, frame)
|
|
i->state = F_UNUSED;
|
|
INIT_LIST_HEAD(&dev->outqueue);
|
|
spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
|
|
|
|
em28xx_queue_unusedframes(dev);
|
|
|
|
if (count > f->buf.length)
|
|
count = f->buf.length;
|
|
|
|
if (copy_to_user(buf, f->bufmem, count)) {
|
|
up(&dev->fileop_lock);
|
|
return -EFAULT;
|
|
}
|
|
*f_pos += count;
|
|
|
|
up(&dev->fileop_lock);
|
|
|
|
return count;
|
|
}
|
|
|
|
/*
|
|
* em28xx_v4l2_poll()
|
|
* will allocate buffers when called for the first time
|
|
*/
|
|
static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table * wait)
|
|
{
|
|
unsigned int mask = 0;
|
|
struct em28xx *dev = filp->private_data;
|
|
|
|
if (down_interruptible(&dev->fileop_lock))
|
|
return POLLERR;
|
|
|
|
if (dev->state & DEV_DISCONNECTED) {
|
|
em28xx_videodbg("device not present\n");
|
|
} else if (dev->state & DEV_MISCONFIGURED) {
|
|
em28xx_videodbg("device is misconfigured; close and open it again\n");
|
|
} else {
|
|
if (dev->io == IO_NONE) {
|
|
if (!em28xx_request_buffers
|
|
(dev, EM28XX_NUM_READ_FRAMES)) {
|
|
em28xx_warn
|
|
("poll() failed, not enough memory\n");
|
|
} else {
|
|
dev->io = IO_READ;
|
|
dev->stream = STREAM_ON;
|
|
}
|
|
}
|
|
|
|
if (dev->io == IO_READ) {
|
|
em28xx_queue_unusedframes(dev);
|
|
poll_wait(filp, &dev->wait_frame, wait);
|
|
|
|
if (!list_empty(&dev->outqueue))
|
|
mask |= POLLIN | POLLRDNORM;
|
|
|
|
up(&dev->fileop_lock);
|
|
|
|
return mask;
|
|
}
|
|
}
|
|
|
|
up(&dev->fileop_lock);
|
|
return POLLERR;
|
|
}
|
|
|
|
/*
|
|
* em28xx_vm_open()
|
|
*/
|
|
static void em28xx_vm_open(struct vm_area_struct *vma)
|
|
{
|
|
struct em28xx_frame_t *f = vma->vm_private_data;
|
|
f->vma_use_count++;
|
|
}
|
|
|
|
/*
|
|
* em28xx_vm_close()
|
|
*/
|
|
static void em28xx_vm_close(struct vm_area_struct *vma)
|
|
{
|
|
/* NOTE: buffers are not freed here */
|
|
struct em28xx_frame_t *f = vma->vm_private_data;
|
|
f->vma_use_count--;
|
|
}
|
|
|
|
static struct vm_operations_struct em28xx_vm_ops = {
|
|
.open = em28xx_vm_open,
|
|
.close = em28xx_vm_close,
|
|
};
|
|
|
|
/*
|
|
* em28xx_v4l2_mmap()
|
|
*/
|
|
static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
|
|
{
|
|
unsigned long size = vma->vm_end - vma->vm_start,
|
|
start = vma->vm_start;
|
|
void *pos;
|
|
u32 i;
|
|
|
|
struct em28xx *dev = filp->private_data;
|
|
|
|
if (down_interruptible(&dev->fileop_lock))
|
|
return -ERESTARTSYS;
|
|
|
|
if (dev->state & DEV_DISCONNECTED) {
|
|
em28xx_videodbg("mmap: device not present\n");
|
|
up(&dev->fileop_lock);
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (dev->state & DEV_MISCONFIGURED) {
|
|
em28xx_videodbg ("mmap: Device is misconfigured; close and "
|
|
"open it again\n");
|
|
up(&dev->fileop_lock);
|
|
return -EIO;
|
|
}
|
|
|
|
if (dev->io != IO_MMAP || !(vma->vm_flags & VM_WRITE) ||
|
|
size != PAGE_ALIGN(dev->frame[0].buf.length)) {
|
|
up(&dev->fileop_lock);
|
|
return -EINVAL;
|
|
}
|
|
|
|
for (i = 0; i < dev->num_frames; i++) {
|
|
if ((dev->frame[i].buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff)
|
|
break;
|
|
}
|
|
if (i == dev->num_frames) {
|
|
em28xx_videodbg("mmap: user supplied mapping address is out of range\n");
|
|
up(&dev->fileop_lock);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* VM_IO is eventually going to replace PageReserved altogether */
|
|
vma->vm_flags |= VM_IO;
|
|
vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
|
|
|
|
pos = dev->frame[i].bufmem;
|
|
while (size > 0) { /* size is page-aligned */
|
|
if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
|
|
em28xx_videodbg("mmap: vm_insert_page failed\n");
|
|
up(&dev->fileop_lock);
|
|
return -EAGAIN;
|
|
}
|
|
start += PAGE_SIZE;
|
|
pos += PAGE_SIZE;
|
|
size -= PAGE_SIZE;
|
|
}
|
|
|
|
vma->vm_ops = &em28xx_vm_ops;
|
|
vma->vm_private_data = &dev->frame[i];
|
|
|
|
em28xx_vm_open(vma);
|
|
up(&dev->fileop_lock);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* em28xx_get_ctrl()
|
|
* return the current saturation, brightness or contrast, mute state
|
|
*/
|
|
static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
|
|
{
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_AUDIO_MUTE:
|
|
ctrl->value = dev->mute;
|
|
return 0;
|
|
case V4L2_CID_AUDIO_VOLUME:
|
|
ctrl->value = dev->volume;
|
|
return 0;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
/*FIXME: should be moved to saa711x */
|
|
static int saa711x_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl)
|
|
{
|
|
s32 tmp;
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_BRIGHTNESS:
|
|
if ((tmp = em28xx_brightness_get(dev)) < 0)
|
|
return -EIO;
|
|
ctrl->value = (s32) ((s8) tmp); /* FIXME: clenaer way to extend sign? */
|
|
return 0;
|
|
case V4L2_CID_CONTRAST:
|
|
if ((ctrl->value = em28xx_contrast_get(dev)) < 0)
|
|
return -EIO;
|
|
return 0;
|
|
case V4L2_CID_SATURATION:
|
|
if ((ctrl->value = em28xx_saturation_get(dev)) < 0)
|
|
return -EIO;
|
|
return 0;
|
|
case V4L2_CID_RED_BALANCE:
|
|
if ((tmp = em28xx_v_balance_get(dev)) < 0)
|
|
return -EIO;
|
|
ctrl->value = (s32) ((s8) tmp); /* FIXME: clenaer way to extend sign? */
|
|
return 0;
|
|
case V4L2_CID_BLUE_BALANCE:
|
|
if ((tmp = em28xx_u_balance_get(dev)) < 0)
|
|
return -EIO;
|
|
ctrl->value = (s32) ((s8) tmp); /* FIXME: clenaer way to extend sign? */
|
|
return 0;
|
|
case V4L2_CID_GAMMA:
|
|
if ((ctrl->value = em28xx_gamma_get(dev)) < 0)
|
|
return -EIO;
|
|
return 0;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* em28xx_set_ctrl()
|
|
* mute or set new saturation, brightness or contrast
|
|
*/
|
|
static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
|
|
{
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_AUDIO_MUTE:
|
|
if (ctrl->value != dev->mute) {
|
|
dev->mute = ctrl->value;
|
|
em28xx_audio_usb_mute(dev, ctrl->value);
|
|
return em28xx_audio_analog_set(dev);
|
|
}
|
|
return 0;
|
|
case V4L2_CID_AUDIO_VOLUME:
|
|
dev->volume = ctrl->value;
|
|
return em28xx_audio_analog_set(dev);
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
/*FIXME: should be moved to saa711x */
|
|
static int saa711x_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl)
|
|
{
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_BRIGHTNESS:
|
|
return em28xx_brightness_set(dev, ctrl->value);
|
|
case V4L2_CID_CONTRAST:
|
|
return em28xx_contrast_set(dev, ctrl->value);
|
|
case V4L2_CID_SATURATION:
|
|
return em28xx_saturation_set(dev, ctrl->value);
|
|
case V4L2_CID_RED_BALANCE:
|
|
return em28xx_v_balance_set(dev, ctrl->value);
|
|
case V4L2_CID_BLUE_BALANCE:
|
|
return em28xx_u_balance_set(dev, ctrl->value);
|
|
case V4L2_CID_GAMMA:
|
|
return em28xx_gamma_set(dev, ctrl->value);
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* em28xx_stream_interrupt()
|
|
* stops streaming
|
|
*/
|
|
static int em28xx_stream_interrupt(struct em28xx *dev)
|
|
{
|
|
int ret = 0;
|
|
|
|
/* stop reading from the device */
|
|
|
|
dev->stream = STREAM_INTERRUPT;
|
|
ret = wait_event_timeout(dev->wait_stream,
|
|
(dev->stream == STREAM_OFF) ||
|
|
(dev->state & DEV_DISCONNECTED),
|
|
EM28XX_URB_TIMEOUT);
|
|
if (dev->state & DEV_DISCONNECTED)
|
|
return -ENODEV;
|
|
else if (ret) {
|
|
dev->state |= DEV_MISCONFIGURED;
|
|
em28xx_videodbg("device is misconfigured; close and "
|
|
"open /dev/video%d again\n", dev->vdev->minor);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int em28xx_set_norm(struct em28xx *dev, int width, int height)
|
|
{
|
|
unsigned int hscale, vscale;
|
|
unsigned int maxh, maxw;
|
|
|
|
maxw = norm_maxw(dev);
|
|
maxh = norm_maxh(dev);
|
|
|
|
/* width must even because of the YUYV format */
|
|
/* height must be even because of interlacing */
|
|
height &= 0xfffe;
|
|
width &= 0xfffe;
|
|
|
|
if (height < 32)
|
|
height = 32;
|
|
if (height > maxh)
|
|
height = maxh;
|
|
if (width < 48)
|
|
width = 48;
|
|
if (width > maxw)
|
|
width = maxw;
|
|
|
|
if ((hscale = (((unsigned long)maxw) << 12) / width - 4096L) >= 0x4000)
|
|
hscale = 0x3fff;
|
|
width = (((unsigned long)maxw) << 12) / (hscale + 4096L);
|
|
|
|
if ((vscale = (((unsigned long)maxh) << 12) / height - 4096L) >= 0x4000)
|
|
vscale = 0x3fff;
|
|
height = (((unsigned long)maxh) << 12) / (vscale + 4096L);
|
|
|
|
/* set new image size */
|
|
dev->width = width;
|
|
dev->height = height;
|
|
dev->frame_size = dev->width * dev->height * 2;
|
|
dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
|
|
dev->bytesperline = dev->width * 2;
|
|
dev->hscale = hscale;
|
|
dev->vscale = vscale;
|
|
|
|
em28xx_resolution_set(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* em28xx_v4l2_do_ioctl()
|
|
* This function is _not_ called directly, but from
|
|
* em28xx_v4l2_ioctl. Userspace
|
|
* copying is done already, arg is a kernel pointer.
|
|
*/
|
|
static int em28xx_do_ioctl(struct inode *inode, struct file *filp,
|
|
struct em28xx *dev, unsigned int cmd, void *arg,
|
|
v4l2_kioctl driver_ioctl)
|
|
{
|
|
int ret;
|
|
|
|
switch (cmd) {
|
|
/* ---------- tv norms ---------- */
|
|
case VIDIOC_ENUMSTD:
|
|
{
|
|
struct v4l2_standard *e = arg;
|
|
unsigned int i;
|
|
|
|
i = e->index;
|
|
if (i >= TVNORMS)
|
|
return -EINVAL;
|
|
ret = v4l2_video_std_construct(e, tvnorms[e->index].id,
|
|
tvnorms[e->index].name);
|
|
e->index = i;
|
|
if (ret < 0)
|
|
return ret;
|
|
return 0;
|
|
}
|
|
case VIDIOC_G_STD:
|
|
{
|
|
v4l2_std_id *id = arg;
|
|
|
|
*id = dev->tvnorm->id;
|
|
return 0;
|
|
}
|
|
case VIDIOC_S_STD:
|
|
{
|
|
v4l2_std_id *id = arg;
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < TVNORMS; i++)
|
|
if (*id == tvnorms[i].id)
|
|
break;
|
|
if (i == TVNORMS)
|
|
for (i = 0; i < TVNORMS; i++)
|
|
if (*id & tvnorms[i].id)
|
|
break;
|
|
if (i == TVNORMS)
|
|
return -EINVAL;
|
|
|
|
down(&dev->lock);
|
|
dev->tvnorm = &tvnorms[i];
|
|
|
|
em28xx_set_norm(dev, dev->width, dev->height);
|
|
|
|
/*
|
|
dev->width=norm_maxw(dev);
|
|
dev->height=norm_maxh(dev);
|
|
dev->frame_size=dev->width*dev->height*2;
|
|
dev->field_size=dev->frame_size>>1;
|
|
dev->bytesperline=dev->width*2;
|
|
dev->hscale=0;
|
|
dev->vscale=0;
|
|
|
|
em28xx_resolution_set(dev);
|
|
*/
|
|
/*
|
|
em28xx_uninit_isoc(dev);
|
|
em28xx_set_alternate(dev);
|
|
em28xx_capture_start(dev, 1);
|
|
em28xx_resolution_set(dev);
|
|
em28xx_init_isoc(dev);
|
|
*/
|
|
em28xx_i2c_call_clients(dev, DECODER_SET_NORM,
|
|
&tvnorms[i].mode);
|
|
em28xx_i2c_call_clients(dev, VIDIOC_S_STD,
|
|
&dev->tvnorm->id);
|
|
|
|
up(&dev->lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* ------ input switching ---------- */
|
|
case VIDIOC_ENUMINPUT:
|
|
{
|
|
struct v4l2_input *i = arg;
|
|
unsigned int n;
|
|
static const char *iname[] = {
|
|
[EM28XX_VMUX_COMPOSITE1] = "Composite1",
|
|
[EM28XX_VMUX_COMPOSITE2] = "Composite2",
|
|
[EM28XX_VMUX_COMPOSITE3] = "Composite3",
|
|
[EM28XX_VMUX_COMPOSITE4] = "Composite4",
|
|
[EM28XX_VMUX_SVIDEO] = "S-Video",
|
|
[EM28XX_VMUX_TELEVISION] = "Television",
|
|
[EM28XX_VMUX_CABLE] = "Cable TV",
|
|
[EM28XX_VMUX_DVB] = "DVB",
|
|
[EM28XX_VMUX_DEBUG] = "for debug only",
|
|
};
|
|
|
|
n = i->index;
|
|
if (n >= MAX_EM28XX_INPUT)
|
|
return -EINVAL;
|
|
if (0 == INPUT(n)->type)
|
|
return -EINVAL;
|
|
memset(i, 0, sizeof(*i));
|
|
i->index = n;
|
|
i->type = V4L2_INPUT_TYPE_CAMERA;
|
|
strcpy(i->name, iname[INPUT(n)->type]);
|
|
if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) ||
|
|
(EM28XX_VMUX_CABLE == INPUT(n)->type))
|
|
i->type = V4L2_INPUT_TYPE_TUNER;
|
|
for (n = 0; n < ARRAY_SIZE(tvnorms); n++)
|
|
i->std |= tvnorms[n].id;
|
|
return 0;
|
|
}
|
|
|
|
case VIDIOC_G_INPUT:
|
|
{
|
|
int *i = arg;
|
|
*i = dev->ctl_input;
|
|
|
|
return 0;
|
|
}
|
|
|
|
case VIDIOC_S_INPUT:
|
|
{
|
|
int *index = arg;
|
|
|
|
if (*index >= MAX_EM28XX_INPUT)
|
|
return -EINVAL;
|
|
if (0 == INPUT(*index)->type)
|
|
return -EINVAL;
|
|
|
|
down(&dev->lock);
|
|
video_mux(dev, *index);
|
|
up(&dev->lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
case VIDIOC_G_AUDIO:
|
|
{
|
|
struct v4l2_audio *a = arg;
|
|
unsigned int index = a->index;
|
|
|
|
if (a->index > 1)
|
|
return -EINVAL;
|
|
memset(a, 0, sizeof(*a));
|
|
index = dev->ctl_ainput;
|
|
|
|
if (index == 0) {
|
|
strcpy(a->name, "Television");
|
|
} else {
|
|
strcpy(a->name, "Line In");
|
|
}
|
|
a->capability = V4L2_AUDCAP_STEREO;
|
|
a->index = index;
|
|
return 0;
|
|
}
|
|
|
|
case VIDIOC_S_AUDIO:
|
|
{
|
|
struct v4l2_audio *a = arg;
|
|
if (a->index != dev->ctl_ainput)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* --- controls ---------------------------------------------- */
|
|
case VIDIOC_QUERYCTRL:
|
|
{
|
|
struct v4l2_queryctrl *qc = arg;
|
|
int i, id=qc->id;
|
|
|
|
memset(qc,0,sizeof(*qc));
|
|
qc->id=id;
|
|
|
|
if (!dev->has_msp34xx) {
|
|
for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
|
|
if (qc->id && qc->id == em28xx_qctrl[i].id) {
|
|
memcpy(qc, &(em28xx_qctrl[i]),
|
|
sizeof(*qc));
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
if (dev->decoder == EM28XX_TVP5150) {
|
|
em28xx_i2c_call_clients(dev,cmd,qc);
|
|
if (qc->type)
|
|
return 0;
|
|
else
|
|
return -EINVAL;
|
|
}
|
|
for (i = 0; i < ARRAY_SIZE(saa711x_qctrl); i++) {
|
|
if (qc->id && qc->id == saa711x_qctrl[i].id) {
|
|
memcpy(qc, &(saa711x_qctrl[i]),
|
|
sizeof(*qc));
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
case VIDIOC_G_CTRL:
|
|
{
|
|
struct v4l2_control *ctrl = arg;
|
|
int retval=-EINVAL;
|
|
|
|
if (!dev->has_msp34xx)
|
|
retval=em28xx_get_ctrl(dev, ctrl);
|
|
if (retval==-EINVAL) {
|
|
if (dev->decoder == EM28XX_TVP5150) {
|
|
em28xx_i2c_call_clients(dev,cmd,arg);
|
|
return 0;
|
|
}
|
|
|
|
return saa711x_get_ctrl(dev, ctrl);
|
|
} else return retval;
|
|
}
|
|
|
|
case VIDIOC_S_CTRL:
|
|
{
|
|
struct v4l2_control *ctrl = arg;
|
|
u8 i;
|
|
|
|
if (!dev->has_msp34xx){
|
|
for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
|
|
if (ctrl->id == em28xx_qctrl[i].id) {
|
|
if (ctrl->value <
|
|
em28xx_qctrl[i].minimum
|
|
|| ctrl->value >
|
|
em28xx_qctrl[i].maximum)
|
|
return -ERANGE;
|
|
return em28xx_set_ctrl(dev, ctrl);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (dev->decoder == EM28XX_TVP5150) {
|
|
em28xx_i2c_call_clients(dev,cmd,arg);
|
|
return 0;
|
|
} else if (!dev->has_msp34xx) {
|
|
for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) {
|
|
if (ctrl->id == em28xx_qctrl[i].id) {
|
|
if (ctrl->value <
|
|
em28xx_qctrl[i].minimum
|
|
|| ctrl->value >
|
|
em28xx_qctrl[i].maximum)
|
|
return -ERANGE;
|
|
return em28xx_set_ctrl(dev, ctrl);
|
|
}
|
|
}
|
|
for (i = 0; i < ARRAY_SIZE(saa711x_qctrl); i++) {
|
|
if (ctrl->id == saa711x_qctrl[i].id) {
|
|
if (ctrl->value <
|
|
saa711x_qctrl[i].minimum
|
|
|| ctrl->value >
|
|
saa711x_qctrl[i].maximum)
|
|
return -ERANGE;
|
|
return saa711x_set_ctrl(dev, ctrl);
|
|
}
|
|
}
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* --- tuner ioctls ------------------------------------------ */
|
|
case VIDIOC_G_TUNER:
|
|
{
|
|
struct v4l2_tuner *t = arg;
|
|
int status = 0;
|
|
|
|
if (0 != t->index)
|
|
return -EINVAL;
|
|
|
|
memset(t, 0, sizeof(*t));
|
|
strcpy(t->name, "Tuner");
|
|
t->type = V4L2_TUNER_ANALOG_TV;
|
|
t->capability = V4L2_TUNER_CAP_NORM;
|
|
t->rangehigh = 0xffffffffUL; /* FIXME: set correct range */
|
|
/* t->signal = 0xffff;*/
|
|
/* em28xx_i2c_call_clients(dev,VIDIOC_G_TUNER,t);*/
|
|
/* No way to get signal strength? */
|
|
down(&dev->lock);
|
|
em28xx_i2c_call_clients(dev, DECODER_GET_STATUS,
|
|
&status);
|
|
up(&dev->lock);
|
|
t->signal =
|
|
(status & DECODER_STATUS_GOOD) != 0 ? 0xffff : 0;
|
|
|
|
em28xx_videodbg("VIDIO_G_TUNER: signal=%x, afc=%x\n", t->signal,
|
|
t->afc);
|
|
return 0;
|
|
}
|
|
case VIDIOC_S_TUNER:
|
|
{
|
|
struct v4l2_tuner *t = arg;
|
|
int status = 0;
|
|
|
|
if (0 != t->index)
|
|
return -EINVAL;
|
|
memset(t, 0, sizeof(*t));
|
|
strcpy(t->name, "Tuner");
|
|
t->type = V4L2_TUNER_ANALOG_TV;
|
|
t->capability = V4L2_TUNER_CAP_NORM;
|
|
t->rangehigh = 0xffffffffUL; /* FIXME: set correct range */
|
|
/* t->signal = 0xffff; */
|
|
/* No way to get signal strength? */
|
|
down(&dev->lock);
|
|
em28xx_i2c_call_clients(dev, DECODER_GET_STATUS,
|
|
&status);
|
|
up(&dev->lock);
|
|
t->signal =
|
|
(status & DECODER_STATUS_GOOD) != 0 ? 0xffff : 0;
|
|
|
|
em28xx_videodbg("VIDIO_S_TUNER: signal=%x, afc=%x\n",
|
|
t->signal, t->afc);
|
|
return 0;
|
|
}
|
|
case VIDIOC_G_FREQUENCY:
|
|
{
|
|
struct v4l2_frequency *f = arg;
|
|
|
|
memset(f, 0, sizeof(*f));
|
|
f->type = V4L2_TUNER_ANALOG_TV;
|
|
f->frequency = dev->ctl_freq;
|
|
|
|
return 0;
|
|
}
|
|
case VIDIOC_S_FREQUENCY:
|
|
{
|
|
struct v4l2_frequency *f = arg;
|
|
|
|
if (0 != f->tuner)
|
|
return -EINVAL;
|
|
|
|
if (V4L2_TUNER_ANALOG_TV != f->type)
|
|
return -EINVAL;
|
|
|
|
down(&dev->lock);
|
|
dev->ctl_freq = f->frequency;
|
|
em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, f);
|
|
up(&dev->lock);
|
|
return 0;
|
|
}
|
|
|
|
case VIDIOC_CROPCAP:
|
|
{
|
|
struct v4l2_cropcap *cc = arg;
|
|
|
|
if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
|
return -EINVAL;
|
|
cc->bounds.left = 0;
|
|
cc->bounds.top = 0;
|
|
cc->bounds.width = dev->width;
|
|
cc->bounds.height = dev->height;
|
|
cc->defrect = cc->bounds;
|
|
cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */
|
|
cc->pixelaspect.denominator = 59;
|
|
return 0;
|
|
}
|
|
case VIDIOC_STREAMON:
|
|
{
|
|
int *type = arg;
|
|
|
|
if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE
|
|
|| dev->io != IO_MMAP)
|
|
return -EINVAL;
|
|
|
|
if (list_empty(&dev->inqueue))
|
|
return -EINVAL;
|
|
|
|
dev->stream = STREAM_ON; /* FIXME: Start video capture here? */
|
|
|
|
em28xx_videodbg("VIDIOC_STREAMON: starting stream\n");
|
|
|
|
return 0;
|
|
}
|
|
case VIDIOC_STREAMOFF:
|
|
{
|
|
int *type = arg;
|
|
int ret;
|
|
|
|
if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE
|
|
|| dev->io != IO_MMAP)
|
|
return -EINVAL;
|
|
|
|
if (dev->stream == STREAM_ON) {
|
|
em28xx_videodbg ("VIDIOC_STREAMOFF: interrupting stream\n");
|
|
if ((ret = em28xx_stream_interrupt(dev)))
|
|
return ret;
|
|
}
|
|
em28xx_empty_framequeues(dev);
|
|
|
|
return 0;
|
|
}
|
|
default:
|
|
return v4l_compat_translate_ioctl(inode, filp, cmd, arg,
|
|
driver_ioctl);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* em28xx_v4l2_do_ioctl()
|
|
* This function is _not_ called directly, but from
|
|
* em28xx_v4l2_ioctl. Userspace
|
|
* copying is done already, arg is a kernel pointer.
|
|
*/
|
|
static int em28xx_video_do_ioctl(struct inode *inode, struct file *filp,
|
|
unsigned int cmd, void *arg)
|
|
{
|
|
struct em28xx *dev = filp->private_data;
|
|
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
if (video_debug > 1)
|
|
v4l_print_ioctl(dev->name,cmd);
|
|
|
|
switch (cmd) {
|
|
|
|
/* --- capabilities ------------------------------------------ */
|
|
case VIDIOC_QUERYCAP:
|
|
{
|
|
struct v4l2_capability *cap = arg;
|
|
|
|
memset(cap, 0, sizeof(*cap));
|
|
strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
|
|
strlcpy(cap->card, em28xx_boards[dev->model].name,
|
|
sizeof(cap->card));
|
|
strlcpy(cap->bus_info, dev->udev->dev.bus_id,
|
|
sizeof(cap->bus_info));
|
|
cap->version = EM28XX_VERSION_CODE;
|
|
cap->capabilities =
|
|
V4L2_CAP_VIDEO_CAPTURE |
|
|
V4L2_CAP_AUDIO |
|
|
V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
|
|
if (dev->has_tuner)
|
|
cap->capabilities |= V4L2_CAP_TUNER;
|
|
return 0;
|
|
}
|
|
|
|
/* --- capture ioctls ---------------------------------------- */
|
|
case VIDIOC_ENUM_FMT:
|
|
{
|
|
struct v4l2_fmtdesc *fmtd = arg;
|
|
|
|
if (fmtd->index != 0)
|
|
return -EINVAL;
|
|
memset(fmtd, 0, sizeof(*fmtd));
|
|
fmtd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
|
strcpy(fmtd->description, "Packed YUY2");
|
|
fmtd->pixelformat = V4L2_PIX_FMT_YUYV;
|
|
memset(fmtd->reserved, 0, sizeof(fmtd->reserved));
|
|
return 0;
|
|
}
|
|
|
|
case VIDIOC_G_FMT:
|
|
{
|
|
struct v4l2_format *format = arg;
|
|
|
|
em28xx_videodbg("VIDIOC_G_FMT: type=%s\n",
|
|
format->type ==
|
|
V4L2_BUF_TYPE_VIDEO_CAPTURE ?
|
|
"V4L2_BUF_TYPE_VIDEO_CAPTURE" : format->type ==
|
|
V4L2_BUF_TYPE_VBI_CAPTURE ?
|
|
"V4L2_BUF_TYPE_VBI_CAPTURE " :
|
|
"not supported");
|
|
|
|
if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
|
return -EINVAL;
|
|
|
|
format->fmt.pix.width = dev->width;
|
|
format->fmt.pix.height = dev->height;
|
|
format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
|
|
format->fmt.pix.bytesperline = dev->bytesperline;
|
|
format->fmt.pix.sizeimage = dev->frame_size;
|
|
format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
|
|
format->fmt.pix.field = dev->interlaced ? V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
|
|
|
|
em28xx_videodbg("VIDIOC_G_FMT: %dx%d\n", dev->width,
|
|
dev->height);
|
|
return 0;
|
|
}
|
|
|
|
case VIDIOC_TRY_FMT:
|
|
case VIDIOC_S_FMT:
|
|
{
|
|
struct v4l2_format *format = arg;
|
|
u32 i;
|
|
int ret = 0;
|
|
int width = format->fmt.pix.width;
|
|
int height = format->fmt.pix.height;
|
|
unsigned int hscale, vscale;
|
|
unsigned int maxh, maxw;
|
|
|
|
maxw = norm_maxw(dev);
|
|
maxh = norm_maxh(dev);
|
|
|
|
/* int both_fields; */
|
|
|
|
em28xx_videodbg("%s: type=%s\n",
|
|
cmd ==
|
|
VIDIOC_TRY_FMT ? "VIDIOC_TRY_FMT" :
|
|
"VIDIOC_S_FMT",
|
|
format->type ==
|
|
V4L2_BUF_TYPE_VIDEO_CAPTURE ?
|
|
"V4L2_BUF_TYPE_VIDEO_CAPTURE" : format->type ==
|
|
V4L2_BUF_TYPE_VBI_CAPTURE ?
|
|
"V4L2_BUF_TYPE_VBI_CAPTURE " :
|
|
"not supported");
|
|
|
|
if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
|
return -EINVAL;
|
|
|
|
em28xx_videodbg("%s: requested %dx%d\n",
|
|
cmd ==
|
|
VIDIOC_TRY_FMT ? "VIDIOC_TRY_FMT" :
|
|
"VIDIOC_S_FMT", format->fmt.pix.width,
|
|
format->fmt.pix.height);
|
|
|
|
/* FIXME: Move some code away from here */
|
|
/* width must even because of the YUYV format */
|
|
/* height must be even because of interlacing */
|
|
height &= 0xfffe;
|
|
width &= 0xfffe;
|
|
|
|
if (height < 32)
|
|
height = 32;
|
|
if (height > maxh)
|
|
height = maxh;
|
|
if (width < 48)
|
|
width = 48;
|
|
if (width > maxw)
|
|
width = maxw;
|
|
|
|
if(dev->is_em2800){
|
|
/* the em2800 can only scale down to 50% */
|
|
if(height % (maxh / 2))
|
|
height=maxh;
|
|
if(width % (maxw / 2))
|
|
width=maxw;
|
|
/* according to empiatech support */
|
|
/* the MaxPacketSize is to small to support */
|
|
/* framesizes larger than 640x480 @ 30 fps */
|
|
/* or 640x576 @ 25 fps. As this would cut */
|
|
/* of a part of the image we prefer */
|
|
/* 360x576 or 360x480 for now */
|
|
if(width == maxw && height == maxh)
|
|
width /= 2;
|
|
}
|
|
|
|
if ((hscale =
|
|
(((unsigned long)maxw) << 12) / width - 4096L) >=
|
|
0x4000)
|
|
hscale = 0x3fff;
|
|
width =
|
|
(((unsigned long)maxw) << 12) / (hscale + 4096L);
|
|
|
|
if ((vscale =
|
|
(((unsigned long)maxh) << 12) / height - 4096L) >=
|
|
0x4000)
|
|
vscale = 0x3fff;
|
|
height =
|
|
(((unsigned long)maxh) << 12) / (vscale + 4096L);
|
|
|
|
format->fmt.pix.width = width;
|
|
format->fmt.pix.height = height;
|
|
format->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV;
|
|
format->fmt.pix.bytesperline = width * 2;
|
|
format->fmt.pix.sizeimage = width * 2 * height;
|
|
format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
|
|
format->fmt.pix.field = V4L2_FIELD_INTERLACED;
|
|
|
|
em28xx_videodbg("%s: returned %dx%d (%d, %d)\n",
|
|
cmd ==
|
|
VIDIOC_TRY_FMT ? "VIDIOC_TRY_FMT" :
|
|
"VIDIOC_S_FMT", format->fmt.pix.width,
|
|
format->fmt.pix.height, hscale, vscale);
|
|
|
|
if (cmd == VIDIOC_TRY_FMT)
|
|
return 0;
|
|
|
|
for (i = 0; i < dev->num_frames; i++)
|
|
if (dev->frame[i].vma_use_count) {
|
|
em28xx_videodbg("VIDIOC_S_FMT failed. "
|
|
"Unmap the buffers first.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* stop io in case it is already in progress */
|
|
if (dev->stream == STREAM_ON) {
|
|
em28xx_videodbg("VIDIOC_SET_FMT: interupting stream\n");
|
|
if ((ret = em28xx_stream_interrupt(dev)))
|
|
return ret;
|
|
}
|
|
|
|
em28xx_release_buffers(dev);
|
|
dev->io = IO_NONE;
|
|
|
|
/* set new image size */
|
|
dev->width = width;
|
|
dev->height = height;
|
|
dev->frame_size = dev->width * dev->height * 2;
|
|
dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */
|
|
dev->bytesperline = dev->width * 2;
|
|
dev->hscale = hscale;
|
|
dev->vscale = vscale;
|
|
/* dev->both_fileds = both_fileds; */
|
|
em28xx_uninit_isoc(dev);
|
|
em28xx_set_alternate(dev);
|
|
em28xx_capture_start(dev, 1);
|
|
em28xx_resolution_set(dev);
|
|
em28xx_init_isoc(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* --- streaming capture ------------------------------------- */
|
|
case VIDIOC_REQBUFS:
|
|
{
|
|
struct v4l2_requestbuffers *rb = arg;
|
|
u32 i;
|
|
int ret;
|
|
|
|
if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
|
|
rb->memory != V4L2_MEMORY_MMAP)
|
|
return -EINVAL;
|
|
|
|
if (dev->io == IO_READ) {
|
|
em28xx_videodbg ("method is set to read;"
|
|
" close and open the device again to"
|
|
" choose the mmap I/O method\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
for (i = 0; i < dev->num_frames; i++)
|
|
if (dev->frame[i].vma_use_count) {
|
|
em28xx_videodbg ("VIDIOC_REQBUFS failed; previous buffers are still mapped\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (dev->stream == STREAM_ON) {
|
|
em28xx_videodbg("VIDIOC_REQBUFS: interrupting stream\n");
|
|
if ((ret = em28xx_stream_interrupt(dev)))
|
|
return ret;
|
|
}
|
|
|
|
em28xx_empty_framequeues(dev);
|
|
|
|
em28xx_release_buffers(dev);
|
|
if (rb->count)
|
|
rb->count =
|
|
em28xx_request_buffers(dev, rb->count);
|
|
|
|
dev->frame_current = NULL;
|
|
|
|
em28xx_videodbg ("VIDIOC_REQBUFS: setting io method to mmap: num bufs %i\n",
|
|
rb->count);
|
|
dev->io = rb->count ? IO_MMAP : IO_NONE;
|
|
return 0;
|
|
}
|
|
|
|
case VIDIOC_QUERYBUF:
|
|
{
|
|
struct v4l2_buffer *b = arg;
|
|
|
|
if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
|
|
b->index >= dev->num_frames || dev->io != IO_MMAP)
|
|
return -EINVAL;
|
|
|
|
memcpy(b, &dev->frame[b->index].buf, sizeof(*b));
|
|
|
|
if (dev->frame[b->index].vma_use_count) {
|
|
b->flags |= V4L2_BUF_FLAG_MAPPED;
|
|
}
|
|
if (dev->frame[b->index].state == F_DONE)
|
|
b->flags |= V4L2_BUF_FLAG_DONE;
|
|
else if (dev->frame[b->index].state != F_UNUSED)
|
|
b->flags |= V4L2_BUF_FLAG_QUEUED;
|
|
return 0;
|
|
}
|
|
case VIDIOC_QBUF:
|
|
{
|
|
struct v4l2_buffer *b = arg;
|
|
unsigned long lock_flags;
|
|
|
|
if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
|
|
b->index >= dev->num_frames || dev->io != IO_MMAP) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (dev->frame[b->index].state != F_UNUSED) {
|
|
return -EAGAIN;
|
|
}
|
|
dev->frame[b->index].state = F_QUEUED;
|
|
|
|
/* add frame to fifo */
|
|
spin_lock_irqsave(&dev->queue_lock, lock_flags);
|
|
list_add_tail(&dev->frame[b->index].frame,
|
|
&dev->inqueue);
|
|
spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
|
|
|
|
return 0;
|
|
}
|
|
case VIDIOC_DQBUF:
|
|
{
|
|
struct v4l2_buffer *b = arg;
|
|
struct em28xx_frame_t *f;
|
|
unsigned long lock_flags;
|
|
int ret = 0;
|
|
|
|
if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE
|
|
|| dev->io != IO_MMAP)
|
|
return -EINVAL;
|
|
|
|
if (list_empty(&dev->outqueue)) {
|
|
if (dev->stream == STREAM_OFF)
|
|
return -EINVAL;
|
|
if (filp->f_flags & O_NONBLOCK)
|
|
return -EAGAIN;
|
|
ret = wait_event_interruptible
|
|
(dev->wait_frame,
|
|
(!list_empty(&dev->outqueue)) ||
|
|
(dev->state & DEV_DISCONNECTED));
|
|
if (ret)
|
|
return ret;
|
|
if (dev->state & DEV_DISCONNECTED)
|
|
return -ENODEV;
|
|
}
|
|
|
|
spin_lock_irqsave(&dev->queue_lock, lock_flags);
|
|
f = list_entry(dev->outqueue.next,
|
|
struct em28xx_frame_t, frame);
|
|
list_del(dev->outqueue.next);
|
|
spin_unlock_irqrestore(&dev->queue_lock, lock_flags);
|
|
|
|
f->state = F_UNUSED;
|
|
memcpy(b, &f->buf, sizeof(*b));
|
|
|
|
if (f->vma_use_count)
|
|
b->flags |= V4L2_BUF_FLAG_MAPPED;
|
|
|
|
return 0;
|
|
}
|
|
default:
|
|
return em28xx_do_ioctl(inode, filp, dev, cmd, arg,
|
|
em28xx_video_do_ioctl);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* em28xx_v4l2_ioctl()
|
|
* handle v4l2 ioctl the main action happens in em28xx_v4l2_do_ioctl()
|
|
*/
|
|
static int em28xx_v4l2_ioctl(struct inode *inode, struct file *filp,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
int ret = 0;
|
|
struct em28xx *dev = filp->private_data;
|
|
|
|
if (down_interruptible(&dev->fileop_lock))
|
|
return -ERESTARTSYS;
|
|
|
|
if (dev->state & DEV_DISCONNECTED) {
|
|
em28xx_errdev("v4l2 ioctl: device not present\n");
|
|
up(&dev->fileop_lock);
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (dev->state & DEV_MISCONFIGURED) {
|
|
em28xx_errdev
|
|
("v4l2 ioctl: device is misconfigured; close and open it again\n");
|
|
up(&dev->fileop_lock);
|
|
return -EIO;
|
|
}
|
|
|
|
ret = video_usercopy(inode, filp, cmd, arg, em28xx_video_do_ioctl);
|
|
|
|
up(&dev->fileop_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct file_operations em28xx_v4l_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = em28xx_v4l2_open,
|
|
.release = em28xx_v4l2_close,
|
|
.ioctl = em28xx_v4l2_ioctl,
|
|
.read = em28xx_v4l2_read,
|
|
.poll = em28xx_v4l2_poll,
|
|
.mmap = em28xx_v4l2_mmap,
|
|
.llseek = no_llseek,
|
|
.compat_ioctl = v4l_compat_ioctl32,
|
|
|
|
};
|
|
|
|
/******************************** usb interface *****************************************/
|
|
|
|
/*
|
|
* em28xx_init_dev()
|
|
* allocates and inits the device structs, registers i2c bus and v4l device
|
|
*/
|
|
static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
|
|
int minor, int model)
|
|
{
|
|
struct em28xx *dev = *devhandle;
|
|
int retval = -ENOMEM;
|
|
int errCode, i;
|
|
unsigned int maxh, maxw;
|
|
|
|
dev->udev = udev;
|
|
dev->model = model;
|
|
init_MUTEX(&dev->lock);
|
|
init_waitqueue_head(&dev->open);
|
|
|
|
dev->em28xx_write_regs = em28xx_write_regs;
|
|
dev->em28xx_read_reg = em28xx_read_reg;
|
|
dev->em28xx_read_reg_req_len = em28xx_read_reg_req_len;
|
|
dev->em28xx_write_regs_req = em28xx_write_regs_req;
|
|
dev->em28xx_read_reg_req = em28xx_read_reg_req;
|
|
dev->is_em2800 = em28xx_boards[model].is_em2800;
|
|
dev->has_tuner = em28xx_boards[model].has_tuner;
|
|
dev->has_msp34xx = em28xx_boards[model].has_msp34xx;
|
|
dev->tda9887_conf = em28xx_boards[model].tda9887_conf;
|
|
dev->decoder = em28xx_boards[model].decoder;
|
|
|
|
if (tuner >= 0)
|
|
dev->tuner_type = tuner;
|
|
else
|
|
dev->tuner_type = em28xx_boards[model].tuner_type;
|
|
|
|
dev->video_inputs = em28xx_boards[model].vchannels;
|
|
|
|
for (i = 0; i < TVNORMS; i++)
|
|
if (em28xx_boards[model].norm == tvnorms[i].mode)
|
|
break;
|
|
if (i == TVNORMS)
|
|
i = 0;
|
|
|
|
dev->tvnorm = &tvnorms[i]; /* set default norm */
|
|
|
|
em28xx_videodbg("tvnorm=%s\n", dev->tvnorm->name);
|
|
|
|
maxw = norm_maxw(dev);
|
|
maxh = norm_maxh(dev);
|
|
|
|
/* set default image size */
|
|
dev->width = maxw;
|
|
dev->height = maxh;
|
|
dev->interlaced = EM28XX_INTERLACED_DEFAULT;
|
|
dev->field_size = dev->width * dev->height;
|
|
dev->frame_size =
|
|
dev->interlaced ? dev->field_size << 1 : dev->field_size;
|
|
dev->bytesperline = dev->width * 2;
|
|
dev->hscale = 0;
|
|
dev->vscale = 0;
|
|
dev->ctl_input = 2;
|
|
|
|
/* setup video picture settings for saa7113h */
|
|
memset(&dev->vpic, 0, sizeof(dev->vpic));
|
|
dev->vpic.colour = 128 << 8;
|
|
dev->vpic.hue = 128 << 8;
|
|
dev->vpic.brightness = 128 << 8;
|
|
dev->vpic.contrast = 192 << 8;
|
|
dev->vpic.whiteness = 128 << 8; /* This one isn't used */
|
|
dev->vpic.depth = 16;
|
|
dev->vpic.palette = VIDEO_PALETTE_YUV422;
|
|
|
|
#ifdef CONFIG_MODULES
|
|
/* request some modules */
|
|
if (dev->decoder == EM28XX_SAA7113 || dev->decoder == EM28XX_SAA7114)
|
|
request_module("saa711x");
|
|
if (dev->decoder == EM28XX_TVP5150)
|
|
request_module("tvp5150");
|
|
if (dev->has_tuner)
|
|
request_module("tuner");
|
|
if (dev->tda9887_conf)
|
|
request_module("tda9887");
|
|
#endif
|
|
errCode = em28xx_config(dev);
|
|
if (errCode) {
|
|
em28xx_errdev("error configuring device\n");
|
|
kfree(dev);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
down(&dev->lock);
|
|
/* register i2c bus */
|
|
em28xx_i2c_register(dev);
|
|
|
|
/* Do board specific init and eeprom reading */
|
|
em28xx_card_setup(dev);
|
|
|
|
/* configure the device */
|
|
em28xx_config_i2c(dev);
|
|
|
|
up(&dev->lock);
|
|
|
|
errCode = em28xx_config(dev);
|
|
|
|
#ifdef CONFIG_MODULES
|
|
if (dev->has_msp34xx)
|
|
request_module("msp3400");
|
|
#endif
|
|
/* allocate and fill v4l2 device struct */
|
|
dev->vdev = video_device_alloc();
|
|
if (NULL == dev->vdev) {
|
|
em28xx_errdev("cannot allocate video_device.\n");
|
|
kfree(dev);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
dev->vdev->type = VID_TYPE_CAPTURE;
|
|
if (dev->has_tuner)
|
|
dev->vdev->type |= VID_TYPE_TUNER;
|
|
dev->vdev->hardware = 0;
|
|
dev->vdev->fops = &em28xx_v4l_fops;
|
|
dev->vdev->minor = -1;
|
|
dev->vdev->dev = &dev->udev->dev;
|
|
dev->vdev->release = video_device_release;
|
|
snprintf(dev->vdev->name, sizeof(dev->vdev->name), "%s",
|
|
"em28xx video");
|
|
list_add_tail(&dev->devlist,&em28xx_devlist);
|
|
|
|
/* register v4l2 device */
|
|
down(&dev->lock);
|
|
if ((retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER, -1))) {
|
|
em28xx_errdev("unable to register video device (error=%i).\n",
|
|
retval);
|
|
up(&dev->lock);
|
|
list_del(&dev->devlist);
|
|
video_device_release(dev->vdev);
|
|
kfree(dev);
|
|
return -ENODEV;
|
|
}
|
|
if (dev->has_msp34xx) {
|
|
/* Send a reset to other chips via gpio */
|
|
em28xx_write_regs_req(dev, 0x00, 0x08, "\xf7", 1);
|
|
udelay(2500);
|
|
em28xx_write_regs_req(dev, 0x00, 0x08, "\xff", 1);
|
|
udelay(2500);
|
|
|
|
}
|
|
video_mux(dev, 0);
|
|
|
|
up(&dev->lock);
|
|
|
|
em28xx_info("V4L2 device registered as /dev/video%d\n",
|
|
dev->vdev->minor);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* em28xx_usb_probe()
|
|
* checks for supported devices
|
|
*/
|
|
static int em28xx_usb_probe(struct usb_interface *interface,
|
|
const struct usb_device_id *id)
|
|
{
|
|
const struct usb_endpoint_descriptor *endpoint;
|
|
struct usb_device *udev;
|
|
struct usb_interface *uif;
|
|
struct em28xx *dev = NULL;
|
|
int retval = -ENODEV;
|
|
int model,i,nr,ifnum;
|
|
|
|
udev = usb_get_dev(interface_to_usbdev(interface));
|
|
ifnum = interface->altsetting[0].desc.bInterfaceNumber;
|
|
|
|
|
|
/* Don't register audio interfaces */
|
|
if (interface->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) {
|
|
em28xx_err(DRIVER_NAME " audio device (%04x:%04x): interface %i, class %i\n",
|
|
udev->descriptor.idVendor,udev->descriptor.idProduct,
|
|
ifnum,
|
|
interface->altsetting[0].desc.bInterfaceClass);
|
|
return -ENODEV;
|
|
}
|
|
|
|
em28xx_err(DRIVER_NAME " new video device (%04x:%04x): interface %i, class %i\n",
|
|
udev->descriptor.idVendor,udev->descriptor.idProduct,
|
|
ifnum,
|
|
interface->altsetting[0].desc.bInterfaceClass);
|
|
|
|
endpoint = &interface->cur_altsetting->endpoint[1].desc;
|
|
|
|
/* check if the the device has the iso in endpoint at the correct place */
|
|
if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
|
|
USB_ENDPOINT_XFER_ISOC) {
|
|
em28xx_err(DRIVER_NAME " probing error: endpoint is non-ISO endpoint!\n");
|
|
return -ENODEV;
|
|
}
|
|
if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
|
|
em28xx_err(DRIVER_NAME " probing error: endpoint is ISO OUT endpoint!\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
model=id->driver_info;
|
|
nr=interface->minor;
|
|
|
|
if (nr>EM28XX_MAXBOARDS) {
|
|
printk (DRIVER_NAME ": Supports only %i em28xx boards.\n",EM28XX_MAXBOARDS);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* allocate memory for our device state and initialize it */
|
|
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
|
|
if (dev == NULL) {
|
|
em28xx_err(DRIVER_NAME ": out of memory!\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* compute alternate max packet sizes */
|
|
uif = udev->actconfig->interface[0];
|
|
|
|
dev->num_alt=uif->num_altsetting;
|
|
printk(DRIVER_NAME ": Alternate settings: %i\n",dev->num_alt);
|
|
// dev->alt_max_pkt_size = kmalloc(sizeof(*dev->alt_max_pkt_size)*
|
|
dev->alt_max_pkt_size = kmalloc(32*
|
|
dev->num_alt,GFP_KERNEL);
|
|
if (dev->alt_max_pkt_size == NULL) {
|
|
em28xx_err(DRIVER_NAME ": out of memory!\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
for (i = 0; i < dev->num_alt ; i++) {
|
|
u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
|
|
wMaxPacketSize);
|
|
dev->alt_max_pkt_size[i] =
|
|
(tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
|
|
printk(DRIVER_NAME ": Alternate setting %i, max size= %i\n",i,
|
|
dev->alt_max_pkt_size[i]);
|
|
}
|
|
|
|
snprintf(dev->name, 29, "em28xx #%d", nr);
|
|
|
|
if ((card[nr]>=0)&&(card[nr]<em28xx_bcount))
|
|
model=card[nr];
|
|
|
|
if ((model==EM2800_BOARD_UNKNOWN)||(model==EM2820_BOARD_UNKNOWN)) {
|
|
printk( "%s: Your board has no eeprom inside it and thus can't\n"
|
|
"%s: be autodetected. Please pass card=<n> insmod option to\n"
|
|
"%s: workaround that. Redirect complaints to the vendor of\n"
|
|
"%s: the TV card. Best regards,\n"
|
|
"%s: -- tux\n",
|
|
dev->name,dev->name,dev->name,dev->name,dev->name);
|
|
printk("%s: Here is a list of valid choices for the card=<n> insmod option:\n",
|
|
dev->name);
|
|
for (i = 0; i < em28xx_bcount; i++) {
|
|
printk("%s: card=%d -> %s\n",
|
|
dev->name, i, em28xx_boards[i].name);
|
|
}
|
|
}
|
|
|
|
/* allocate device struct */
|
|
retval = em28xx_init_dev(&dev, udev, nr, model);
|
|
if (retval)
|
|
return retval;
|
|
|
|
em28xx_info("Found %s\n", em28xx_boards[model].name);
|
|
|
|
/* save our data pointer in this interface device */
|
|
usb_set_intfdata(interface, dev);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* em28xx_usb_disconnect()
|
|
* called when the device gets diconencted
|
|
* video device will be unregistered on v4l2_close in case it is still open
|
|
*/
|
|
static void em28xx_usb_disconnect(struct usb_interface *interface)
|
|
{
|
|
struct em28xx *dev = usb_get_intfdata(interface);
|
|
usb_set_intfdata(interface, NULL);
|
|
|
|
/*FIXME: IR should be disconnected */
|
|
|
|
if (!dev)
|
|
return;
|
|
|
|
|
|
down_write(&em28xx_disconnect);
|
|
|
|
down(&dev->lock);
|
|
|
|
em28xx_info("disconnecting %s\n", dev->vdev->name);
|
|
|
|
wake_up_interruptible_all(&dev->open);
|
|
|
|
if (dev->users) {
|
|
em28xx_warn
|
|
("device /dev/video%d is open! Deregistration and memory "
|
|
"deallocation are deferred on close.\n", dev->vdev->minor);
|
|
dev->state |= DEV_MISCONFIGURED;
|
|
em28xx_uninit_isoc(dev);
|
|
dev->state |= DEV_DISCONNECTED;
|
|
wake_up_interruptible(&dev->wait_frame);
|
|
wake_up_interruptible(&dev->wait_stream);
|
|
} else {
|
|
dev->state |= DEV_DISCONNECTED;
|
|
em28xx_release_resources(dev);
|
|
}
|
|
|
|
up(&dev->lock);
|
|
|
|
if (!dev->users) {
|
|
kfree(dev->alt_max_pkt_size);
|
|
kfree(dev);
|
|
}
|
|
|
|
up_write(&em28xx_disconnect);
|
|
}
|
|
|
|
static struct usb_driver em28xx_usb_driver = {
|
|
.name = "em28xx",
|
|
.probe = em28xx_usb_probe,
|
|
.disconnect = em28xx_usb_disconnect,
|
|
.id_table = em28xx_id_table,
|
|
};
|
|
|
|
static int __init em28xx_module_init(void)
|
|
{
|
|
int result;
|
|
|
|
printk(KERN_INFO DRIVER_NAME " v4l2 driver version %d.%d.%d loaded\n",
|
|
(EM28XX_VERSION_CODE >> 16) & 0xff,
|
|
(EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff);
|
|
#ifdef SNAPSHOT
|
|
printk(KERN_INFO DRIVER_NAME " snapshot date %04d-%02d-%02d\n",
|
|
SNAPSHOT / 10000, (SNAPSHOT / 100) % 100, SNAPSHOT % 100);
|
|
#endif
|
|
|
|
/* register this driver with the USB subsystem */
|
|
result = usb_register(&em28xx_usb_driver);
|
|
if (result)
|
|
em28xx_err(DRIVER_NAME
|
|
" usb_register failed. Error number %d.\n", result);
|
|
|
|
return result;
|
|
}
|
|
|
|
static void __exit em28xx_module_exit(void)
|
|
{
|
|
/* deregister this driver with the USB subsystem */
|
|
usb_deregister(&em28xx_usb_driver);
|
|
}
|
|
|
|
module_init(em28xx_module_init);
|
|
module_exit(em28xx_module_exit);
|