450 lines
12 KiB
C
450 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Hauppauge HD PVR USB driver
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*
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* Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com)
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* Copyright (C) 2008 Janne Grunau (j@jannau.net)
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* Copyright (C) 2008 John Poet
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*/
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/uaccess.h>
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#include <linux/atomic.h>
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#include <linux/usb.h>
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#include <linux/mutex.h>
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#include <linux/i2c.h>
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#include <linux/videodev2.h>
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#include <media/v4l2-dev.h>
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#include <media/v4l2-common.h>
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#include "hdpvr.h"
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static int video_nr[HDPVR_MAX] = {[0 ... (HDPVR_MAX - 1)] = UNSET};
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module_param_array(video_nr, int, NULL, 0);
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MODULE_PARM_DESC(video_nr, "video device number (-1=Auto)");
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/* holds the number of currently registered devices */
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static atomic_t dev_nr = ATOMIC_INIT(-1);
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int hdpvr_debug;
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module_param(hdpvr_debug, int, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(hdpvr_debug, "enable debugging output");
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static uint default_video_input = HDPVR_VIDEO_INPUTS;
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module_param(default_video_input, uint, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(default_video_input, "default video input: 0=Component / 1=S-Video / 2=Composite");
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static uint default_audio_input = HDPVR_AUDIO_INPUTS;
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module_param(default_audio_input, uint, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(default_audio_input, "default audio input: 0=RCA back / 1=RCA front / 2=S/PDIF");
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static bool boost_audio;
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module_param(boost_audio, bool, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(boost_audio, "boost the audio signal");
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/* table of devices that work with this driver */
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static const struct usb_device_id hdpvr_table[] = {
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{ USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID) },
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{ USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID1) },
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{ USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID2) },
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{ USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID3) },
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{ USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID4) },
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, hdpvr_table);
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void hdpvr_delete(struct hdpvr_device *dev)
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{
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hdpvr_free_buffers(dev);
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usb_put_dev(dev->udev);
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}
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static void challenge(u8 *bytes)
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{
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__le64 *i64P;
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u64 tmp64;
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uint i, idx;
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for (idx = 0; idx < 32; ++idx) {
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if (idx & 0x3)
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bytes[(idx >> 3) + 3] = bytes[(idx >> 2) & 0x3];
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switch (idx & 0x3) {
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case 0x3:
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bytes[2] += bytes[3] * 4 + bytes[4] + bytes[5];
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bytes[4] += bytes[(idx & 0x1) * 2] * 9 + 9;
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break;
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case 0x1:
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bytes[0] *= 8;
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bytes[0] += 7*idx + 4;
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bytes[6] += bytes[3] * 3;
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break;
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case 0x0:
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bytes[3 - (idx >> 3)] = bytes[idx >> 2];
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bytes[5] += bytes[6] * 3;
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for (i = 0; i < 3; i++)
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bytes[3] *= bytes[3] + 1;
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break;
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case 0x2:
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for (i = 0; i < 3; i++)
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bytes[1] *= bytes[6] + 1;
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for (i = 0; i < 3; i++) {
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i64P = (__le64 *)bytes;
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tmp64 = le64_to_cpup(i64P);
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tmp64 = tmp64 + (tmp64 << (bytes[7] & 0x0f));
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*i64P = cpu_to_le64(tmp64);
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}
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break;
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}
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}
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}
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/* try to init the device like the windows driver */
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static int device_authorization(struct hdpvr_device *dev)
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{
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int ret, retval = -ENOMEM;
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char request_type = 0x38, rcv_request = 0x81;
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char *response;
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mutex_lock(&dev->usbc_mutex);
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ret = usb_control_msg(dev->udev,
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usb_rcvctrlpipe(dev->udev, 0),
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rcv_request, 0x80 | request_type,
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0x0400, 0x0003,
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dev->usbc_buf, 46,
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10000);
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if (ret != 46) {
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v4l2_err(&dev->v4l2_dev,
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"unexpected answer of status request, len %d\n", ret);
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goto unlock;
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}
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#ifdef HDPVR_DEBUG
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else {
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v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
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"Status request returned, len %d: %46ph\n",
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ret, dev->usbc_buf);
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}
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#endif
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dev->fw_ver = dev->usbc_buf[1];
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dev->usbc_buf[46] = '\0';
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v4l2_info(&dev->v4l2_dev, "firmware version 0x%x dated %s\n",
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dev->fw_ver, &dev->usbc_buf[2]);
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if (dev->fw_ver > 0x15) {
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dev->options.brightness = 0x80;
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dev->options.contrast = 0x40;
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dev->options.hue = 0xf;
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dev->options.saturation = 0x40;
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dev->options.sharpness = 0x80;
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}
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switch (dev->fw_ver) {
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case HDPVR_FIRMWARE_VERSION:
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dev->flags &= ~HDPVR_FLAG_AC3_CAP;
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break;
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case HDPVR_FIRMWARE_VERSION_AC3:
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case HDPVR_FIRMWARE_VERSION_0X12:
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case HDPVR_FIRMWARE_VERSION_0X15:
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case HDPVR_FIRMWARE_VERSION_0X1E:
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dev->flags |= HDPVR_FLAG_AC3_CAP;
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break;
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default:
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v4l2_info(&dev->v4l2_dev, "untested firmware, the driver might not work.\n");
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if (dev->fw_ver >= HDPVR_FIRMWARE_VERSION_AC3)
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dev->flags |= HDPVR_FLAG_AC3_CAP;
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else
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dev->flags &= ~HDPVR_FLAG_AC3_CAP;
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}
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response = dev->usbc_buf+38;
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#ifdef HDPVR_DEBUG
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v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, "challenge: %8ph\n",
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response);
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#endif
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challenge(response);
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#ifdef HDPVR_DEBUG
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v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, " response: %8ph\n",
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response);
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#endif
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msleep(100);
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ret = usb_control_msg(dev->udev,
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usb_sndctrlpipe(dev->udev, 0),
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0xd1, 0x00 | request_type,
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0x0000, 0x0000,
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response, 8,
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10000);
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v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
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"magic request returned %d\n", ret);
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retval = ret != 8;
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unlock:
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mutex_unlock(&dev->usbc_mutex);
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return retval;
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}
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static int hdpvr_device_init(struct hdpvr_device *dev)
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{
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int ret;
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u8 *buf;
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if (device_authorization(dev))
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return -EACCES;
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/* default options for init */
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hdpvr_set_options(dev);
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/* set filter options */
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mutex_lock(&dev->usbc_mutex);
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buf = dev->usbc_buf;
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buf[0] = 0x03; buf[1] = 0x03; buf[2] = 0x00; buf[3] = 0x00;
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ret = usb_control_msg(dev->udev,
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usb_sndctrlpipe(dev->udev, 0),
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0x01, 0x38,
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CTRL_LOW_PASS_FILTER_VALUE, CTRL_DEFAULT_INDEX,
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buf, 4,
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1000);
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v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
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"control request returned %d\n", ret);
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mutex_unlock(&dev->usbc_mutex);
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/* enable fan and bling leds */
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mutex_lock(&dev->usbc_mutex);
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buf[0] = 0x1;
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ret = usb_control_msg(dev->udev,
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usb_sndctrlpipe(dev->udev, 0),
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0xd4, 0x38, 0, 0, buf, 1,
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1000);
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v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
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"control request returned %d\n", ret);
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/* boost analog audio */
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buf[0] = boost_audio;
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ret = usb_control_msg(dev->udev,
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usb_sndctrlpipe(dev->udev, 0),
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0xd5, 0x38, 0, 0, buf, 1,
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1000);
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v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
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"control request returned %d\n", ret);
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mutex_unlock(&dev->usbc_mutex);
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dev->status = STATUS_IDLE;
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return 0;
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}
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static const struct hdpvr_options hdpvr_default_options = {
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.video_std = HDPVR_60HZ,
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.video_input = HDPVR_COMPONENT,
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.audio_input = HDPVR_RCA_BACK,
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.bitrate = 65, /* 6 mbps */
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.peak_bitrate = 90, /* 9 mbps */
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.bitrate_mode = HDPVR_CONSTANT,
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.gop_mode = HDPVR_SIMPLE_IDR_GOP,
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.audio_codec = V4L2_MPEG_AUDIO_ENCODING_AAC,
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/* original picture controls for firmware version <= 0x15 */
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/* updated in device_authorization() for newer firmware */
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.brightness = 0x86,
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.contrast = 0x80,
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.hue = 0x80,
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.saturation = 0x80,
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.sharpness = 0x80,
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};
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static int hdpvr_probe(struct usb_interface *interface,
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const struct usb_device_id *id)
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{
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struct hdpvr_device *dev;
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struct usb_host_interface *iface_desc;
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struct usb_endpoint_descriptor *endpoint;
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#if IS_ENABLED(CONFIG_I2C)
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struct i2c_client *client;
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#endif
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size_t buffer_size;
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int i;
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int dev_num;
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int retval = -ENOMEM;
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/* allocate memory for our device state and initialize it */
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dev = kzalloc(sizeof(*dev), GFP_KERNEL);
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if (!dev) {
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dev_err(&interface->dev, "Out of memory\n");
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goto error;
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}
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/* init video transfer queues first of all */
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/* to prevent oops in hdpvr_delete() on error paths */
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INIT_LIST_HEAD(&dev->free_buff_list);
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INIT_LIST_HEAD(&dev->rec_buff_list);
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/* register v4l2_device early so it can be used for printks */
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if (v4l2_device_register(&interface->dev, &dev->v4l2_dev)) {
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dev_err(&interface->dev, "v4l2_device_register failed\n");
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goto error_free_dev;
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}
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mutex_init(&dev->io_mutex);
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mutex_init(&dev->i2c_mutex);
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mutex_init(&dev->usbc_mutex);
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dev->usbc_buf = kmalloc(64, GFP_KERNEL);
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if (!dev->usbc_buf) {
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v4l2_err(&dev->v4l2_dev, "Out of memory\n");
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goto error_v4l2_unregister;
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}
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init_waitqueue_head(&dev->wait_buffer);
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init_waitqueue_head(&dev->wait_data);
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dev->options = hdpvr_default_options;
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if (default_video_input < HDPVR_VIDEO_INPUTS)
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dev->options.video_input = default_video_input;
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if (default_audio_input < HDPVR_AUDIO_INPUTS) {
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dev->options.audio_input = default_audio_input;
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if (default_audio_input == HDPVR_SPDIF)
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dev->options.audio_codec =
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V4L2_MPEG_AUDIO_ENCODING_AC3;
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}
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dev->udev = usb_get_dev(interface_to_usbdev(interface));
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/* set up the endpoint information */
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/* use only the first bulk-in and bulk-out endpoints */
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iface_desc = interface->cur_altsetting;
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for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
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endpoint = &iface_desc->endpoint[i].desc;
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if (!dev->bulk_in_endpointAddr &&
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usb_endpoint_is_bulk_in(endpoint)) {
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/* USB interface description is buggy, reported max
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* packet size is 512 bytes, windows driver uses 8192 */
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buffer_size = 8192;
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dev->bulk_in_size = buffer_size;
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dev->bulk_in_endpointAddr = endpoint->bEndpointAddress;
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}
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}
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if (!dev->bulk_in_endpointAddr) {
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v4l2_err(&dev->v4l2_dev, "Could not find bulk-in endpoint\n");
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goto error_put_usb;
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}
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/* init the device */
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if (hdpvr_device_init(dev)) {
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v4l2_err(&dev->v4l2_dev, "device init failed\n");
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goto error_put_usb;
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}
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mutex_lock(&dev->io_mutex);
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if (hdpvr_alloc_buffers(dev, NUM_BUFFERS)) {
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mutex_unlock(&dev->io_mutex);
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v4l2_err(&dev->v4l2_dev,
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"allocating transfer buffers failed\n");
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goto error_put_usb;
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}
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mutex_unlock(&dev->io_mutex);
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#if IS_ENABLED(CONFIG_I2C)
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retval = hdpvr_register_i2c_adapter(dev);
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if (retval < 0) {
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v4l2_err(&dev->v4l2_dev, "i2c adapter register failed\n");
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goto error_free_buffers;
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}
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client = hdpvr_register_ir_i2c(dev);
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if (IS_ERR(client)) {
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v4l2_err(&dev->v4l2_dev, "i2c IR device register failed\n");
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retval = PTR_ERR(client);
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goto reg_fail;
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}
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#endif
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dev_num = atomic_inc_return(&dev_nr);
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if (dev_num >= HDPVR_MAX) {
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v4l2_err(&dev->v4l2_dev,
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"max device number reached, device register failed\n");
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atomic_dec(&dev_nr);
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retval = -ENODEV;
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goto reg_fail;
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}
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retval = hdpvr_register_videodev(dev, &interface->dev,
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video_nr[dev_num]);
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if (retval < 0) {
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v4l2_err(&dev->v4l2_dev, "registering videodev failed\n");
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goto reg_fail;
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}
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/* let the user know what node this device is now attached to */
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v4l2_info(&dev->v4l2_dev, "device now attached to %s\n",
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video_device_node_name(&dev->video_dev));
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return 0;
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reg_fail:
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#if IS_ENABLED(CONFIG_I2C)
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i2c_del_adapter(&dev->i2c_adapter);
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error_free_buffers:
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#endif
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hdpvr_free_buffers(dev);
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error_put_usb:
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usb_put_dev(dev->udev);
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kfree(dev->usbc_buf);
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error_v4l2_unregister:
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v4l2_device_unregister(&dev->v4l2_dev);
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error_free_dev:
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kfree(dev);
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error:
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return retval;
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}
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static void hdpvr_disconnect(struct usb_interface *interface)
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{
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struct hdpvr_device *dev = to_hdpvr_dev(usb_get_intfdata(interface));
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v4l2_info(&dev->v4l2_dev, "device %s disconnected\n",
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video_device_node_name(&dev->video_dev));
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/* prevent more I/O from starting and stop any ongoing */
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mutex_lock(&dev->io_mutex);
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dev->status = STATUS_DISCONNECTED;
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wake_up_interruptible(&dev->wait_data);
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wake_up_interruptible(&dev->wait_buffer);
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mutex_unlock(&dev->io_mutex);
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v4l2_device_disconnect(&dev->v4l2_dev);
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msleep(100);
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flush_work(&dev->worker);
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mutex_lock(&dev->io_mutex);
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hdpvr_cancel_queue(dev);
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mutex_unlock(&dev->io_mutex);
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#if IS_ENABLED(CONFIG_I2C)
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i2c_del_adapter(&dev->i2c_adapter);
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#endif
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video_unregister_device(&dev->video_dev);
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atomic_dec(&dev_nr);
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}
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static struct usb_driver hdpvr_usb_driver = {
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.name = "hdpvr",
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.probe = hdpvr_probe,
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.disconnect = hdpvr_disconnect,
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.id_table = hdpvr_table,
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};
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module_usb_driver(hdpvr_usb_driver);
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MODULE_LICENSE("GPL");
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MODULE_VERSION("0.2.1");
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MODULE_AUTHOR("Janne Grunau");
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MODULE_DESCRIPTION("Hauppauge HD PVR driver");
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