cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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pvrusb2-main.c (3597B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 *
      4 *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
      5 *  Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
      6 */
      7
      8#include <linux/kernel.h>
      9#include <linux/errno.h>
     10#include <linux/module.h>
     11#include <linux/usb.h>
     12#include <linux/videodev2.h>
     13
     14#include "pvrusb2-hdw.h"
     15#include "pvrusb2-devattr.h"
     16#include "pvrusb2-context.h"
     17#include "pvrusb2-debug.h"
     18#include "pvrusb2-v4l2.h"
     19#ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
     20#include "pvrusb2-sysfs.h"
     21#endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
     22
     23#define DRIVER_AUTHOR "Mike Isely <isely@pobox.com>"
     24#define DRIVER_DESC "Hauppauge WinTV-PVR-USB2 MPEG2 Encoder/Tuner"
     25#define DRIVER_VERSION "V4L in-tree version"
     26
     27#define DEFAULT_DEBUG_MASK (PVR2_TRACE_ERROR_LEGS| \
     28			    PVR2_TRACE_INFO| \
     29			    PVR2_TRACE_STD| \
     30			    PVR2_TRACE_TOLERANCE| \
     31			    PVR2_TRACE_TRAP| \
     32			    0)
     33
     34int pvrusb2_debug = DEFAULT_DEBUG_MASK;
     35
     36module_param_named(debug,pvrusb2_debug,int,S_IRUGO|S_IWUSR);
     37MODULE_PARM_DESC(debug, "Debug trace mask");
     38
     39#ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
     40static struct pvr2_sysfs_class *class_ptr = NULL;
     41#endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
     42
     43static void pvr_setup_attach(struct pvr2_context *pvr)
     44{
     45	/* Create association with v4l layer */
     46	pvr2_v4l2_create(pvr);
     47#ifdef CONFIG_VIDEO_PVRUSB2_DVB
     48	/* Create association with dvb layer */
     49	pvr2_dvb_create(pvr);
     50#endif
     51#ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
     52	pvr2_sysfs_create(pvr,class_ptr);
     53#endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
     54}
     55
     56static int pvr_probe(struct usb_interface *intf,
     57		     const struct usb_device_id *devid)
     58{
     59	struct pvr2_context *pvr;
     60
     61	/* Create underlying hardware interface */
     62	pvr = pvr2_context_create(intf,devid,pvr_setup_attach);
     63	if (!pvr) {
     64		pvr2_trace(PVR2_TRACE_ERROR_LEGS,
     65			   "Failed to create hdw handler");
     66		return -ENOMEM;
     67	}
     68
     69	pvr2_trace(PVR2_TRACE_INIT,"pvr_probe(pvr=%p)",pvr);
     70
     71	usb_set_intfdata(intf, pvr);
     72
     73	return 0;
     74}
     75
     76/*
     77 * pvr_disconnect()
     78 *
     79 */
     80static void pvr_disconnect(struct usb_interface *intf)
     81{
     82	struct pvr2_context *pvr = usb_get_intfdata(intf);
     83
     84	pvr2_trace(PVR2_TRACE_INIT,"pvr_disconnect(pvr=%p) BEGIN",pvr);
     85
     86	usb_set_intfdata (intf, NULL);
     87	pvr2_context_disconnect(pvr);
     88
     89	pvr2_trace(PVR2_TRACE_INIT,"pvr_disconnect(pvr=%p) DONE",pvr);
     90
     91}
     92
     93static struct usb_driver pvr_driver = {
     94	.name =         "pvrusb2",
     95	.id_table =     pvr2_device_table,
     96	.probe =        pvr_probe,
     97	.disconnect =   pvr_disconnect
     98};
     99
    100/*
    101 * pvr_init() / pvr_exit()
    102 *
    103 * This code is run to initialize/exit the driver.
    104 *
    105 */
    106static int __init pvr_init(void)
    107{
    108	int ret;
    109
    110	pvr2_trace(PVR2_TRACE_INIT,"pvr_init");
    111
    112	ret = pvr2_context_global_init();
    113	if (ret != 0) {
    114		pvr2_trace(PVR2_TRACE_INIT,"pvr_init failure code=%d",ret);
    115		return ret;
    116	}
    117
    118#ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
    119	class_ptr = pvr2_sysfs_class_create();
    120#endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
    121
    122	ret = usb_register(&pvr_driver);
    123
    124	if (ret == 0)
    125		pr_info("pvrusb2: " DRIVER_VERSION ":"
    126		       DRIVER_DESC "\n");
    127	if (pvrusb2_debug)
    128		pr_info("pvrusb2: Debug mask is %d (0x%x)\n",
    129		       pvrusb2_debug,pvrusb2_debug);
    130
    131	pvr2_trace(PVR2_TRACE_INIT,"pvr_init complete");
    132
    133	return ret;
    134}
    135
    136static void __exit pvr_exit(void)
    137{
    138	pvr2_trace(PVR2_TRACE_INIT,"pvr_exit");
    139
    140	usb_deregister(&pvr_driver);
    141
    142	pvr2_context_global_done();
    143
    144#ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
    145	pvr2_sysfs_class_destroy(class_ptr);
    146#endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
    147
    148	pvr2_trace(PVR2_TRACE_INIT,"pvr_exit complete");
    149}
    150
    151module_init(pvr_init);
    152module_exit(pvr_exit);
    153
    154MODULE_AUTHOR(DRIVER_AUTHOR);
    155MODULE_DESCRIPTION(DRIVER_DESC);
    156MODULE_LICENSE("GPL");
    157MODULE_VERSION("0.9.1");