--- /dev/null
+/*
+ * Hauppauge HD PVR USB driver
+ *
+ * Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com)
+ * Copyright (C) 2008 Janne Grunau (j@jannau.net)
+ * Copyright (C) 2008 John Poet
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, version 2.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/uaccess.h>
+#include <linux/atomic.h>
+#include <linux/usb.h>
+#include <linux/mutex.h>
+#include <linux/i2c.h>
+
+#include <linux/videodev2.h>
+#include <media/v4l2-dev.h>
+#include <media/v4l2-common.h>
+
+#include "hdpvr.h"
+
+static int video_nr[HDPVR_MAX] = {[0 ... (HDPVR_MAX - 1)] = UNSET};
+module_param_array(video_nr, int, NULL, 0);
+MODULE_PARM_DESC(video_nr, "video device number (-1=Auto)");
+
+/* holds the number of currently registered devices */
+static atomic_t dev_nr = ATOMIC_INIT(-1);
+
+int hdpvr_debug;
+module_param(hdpvr_debug, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(hdpvr_debug, "enable debugging output");
+
+static uint default_video_input = HDPVR_VIDEO_INPUTS;
+module_param(default_video_input, uint, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(default_video_input, "default video input: 0=Component / "
+ "1=S-Video / 2=Composite");
+
+static uint default_audio_input = HDPVR_AUDIO_INPUTS;
+module_param(default_audio_input, uint, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(default_audio_input, "default audio input: 0=RCA back / "
+ "1=RCA front / 2=S/PDIF");
+
+static bool boost_audio;
+module_param(boost_audio, bool, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(boost_audio, "boost the audio signal");
+
+
+/* table of devices that work with this driver */
+static struct usb_device_id hdpvr_table[] = {
+ { USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID) },
+ { USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID1) },
+ { USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID2) },
+ { USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID3) },
+ { USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID4) },
+ { } /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(usb, hdpvr_table);
+
+
+void hdpvr_delete(struct hdpvr_device *dev)
+{
+ hdpvr_free_buffers(dev);
+ usb_put_dev(dev->udev);
+}
+
+static void challenge(u8 *bytes)
+{
+ __le64 *i64P;
+ u64 tmp64;
+ uint i, idx;
+
+ for (idx = 0; idx < 32; ++idx) {
+
+ if (idx & 0x3)
+ bytes[(idx >> 3) + 3] = bytes[(idx >> 2) & 0x3];
+
+ switch (idx & 0x3) {
+ case 0x3:
+ bytes[2] += bytes[3] * 4 + bytes[4] + bytes[5];
+ bytes[4] += bytes[(idx & 0x1) * 2] * 9 + 9;
+ break;
+ case 0x1:
+ bytes[0] *= 8;
+ bytes[0] += 7*idx + 4;
+ bytes[6] += bytes[3] * 3;
+ break;
+ case 0x0:
+ bytes[3 - (idx >> 3)] = bytes[idx >> 2];
+ bytes[5] += bytes[6] * 3;
+ for (i = 0; i < 3; i++)
+ bytes[3] *= bytes[3] + 1;
+ break;
+ case 0x2:
+ for (i = 0; i < 3; i++)
+ bytes[1] *= bytes[6] + 1;
+ for (i = 0; i < 3; i++) {
+ i64P = (__le64 *)bytes;
+ tmp64 = le64_to_cpup(i64P);
+ tmp64 = tmp64 + (tmp64 << (bytes[7] & 0x0f));
+ *i64P = cpu_to_le64(tmp64);
+ }
+ break;
+ }
+ }
+}
+
+/* try to init the device like the windows driver */
+static int device_authorization(struct hdpvr_device *dev)
+{
+
+ int ret, retval = -ENOMEM;
+ char request_type = 0x38, rcv_request = 0x81;
+ char *response;
+
+ mutex_lock(&dev->usbc_mutex);
+ ret = usb_control_msg(dev->udev,
+ usb_rcvctrlpipe(dev->udev, 0),
+ rcv_request, 0x80 | request_type,
+ 0x0400, 0x0003,
+ dev->usbc_buf, 46,
+ 10000);
+ if (ret != 46) {
+ v4l2_err(&dev->v4l2_dev,
+ "unexpected answer of status request, len %d\n", ret);
+ goto unlock;
+ }
+#ifdef HDPVR_DEBUG
+ else {
+ v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
+ "Status request returned, len %d: %46ph\n",
+ ret, dev->usbc_buf);
+ }
+#endif
+
+ dev->fw_ver = dev->usbc_buf[1];
+
+ v4l2_info(&dev->v4l2_dev, "firmware version 0x%x dated %s\n",
+ dev->fw_ver, &dev->usbc_buf[2]);
+
+ if (dev->fw_ver > 0x15) {
+ dev->options.brightness = 0x80;
+ dev->options.contrast = 0x40;
+ dev->options.hue = 0xf;
+ dev->options.saturation = 0x40;
+ dev->options.sharpness = 0x80;
+ }
+
+ switch (dev->fw_ver) {
+ case HDPVR_FIRMWARE_VERSION:
+ dev->flags &= ~HDPVR_FLAG_AC3_CAP;
+ break;
+ case HDPVR_FIRMWARE_VERSION_AC3:
+ case HDPVR_FIRMWARE_VERSION_0X12:
+ case HDPVR_FIRMWARE_VERSION_0X15:
+ case HDPVR_FIRMWARE_VERSION_0X1E:
+ dev->flags |= HDPVR_FLAG_AC3_CAP;
+ break;
+ default:
+ v4l2_info(&dev->v4l2_dev, "untested firmware, the driver might"
+ " not work.\n");
+ if (dev->fw_ver >= HDPVR_FIRMWARE_VERSION_AC3)
+ dev->flags |= HDPVR_FLAG_AC3_CAP;
+ else
+ dev->flags &= ~HDPVR_FLAG_AC3_CAP;
+ }
+
+ response = dev->usbc_buf+38;
+#ifdef HDPVR_DEBUG
+ v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, "challenge: %8ph\n",
+ response);
+#endif
+ challenge(response);
+#ifdef HDPVR_DEBUG
+ v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, " response: %8ph\n",
+ response);
+#endif
+
+ msleep(100);
+ ret = usb_control_msg(dev->udev,
+ usb_sndctrlpipe(dev->udev, 0),
+ 0xd1, 0x00 | request_type,
+ 0x0000, 0x0000,
+ response, 8,
+ 10000);
+ v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
+ "magic request returned %d\n", ret);
+
+ retval = ret != 8;
+unlock:
+ mutex_unlock(&dev->usbc_mutex);
+ return retval;
+}
+
+static int hdpvr_device_init(struct hdpvr_device *dev)
+{
+ int ret;
+ u8 *buf;
+
+ if (device_authorization(dev))
+ return -EACCES;
+
+ /* default options for init */
+ hdpvr_set_options(dev);
+
+ /* set filter options */
+ mutex_lock(&dev->usbc_mutex);
+ buf = dev->usbc_buf;
+ buf[0] = 0x03; buf[1] = 0x03; buf[2] = 0x00; buf[3] = 0x00;
+ ret = usb_control_msg(dev->udev,
+ usb_sndctrlpipe(dev->udev, 0),
+ 0x01, 0x38,
+ CTRL_LOW_PASS_FILTER_VALUE, CTRL_DEFAULT_INDEX,
+ buf, 4,
+ 1000);
+ v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
+ "control request returned %d\n", ret);
+ mutex_unlock(&dev->usbc_mutex);
+
+ /* enable fan and bling leds */
+ mutex_lock(&dev->usbc_mutex);
+ buf[0] = 0x1;
+ ret = usb_control_msg(dev->udev,
+ usb_sndctrlpipe(dev->udev, 0),
+ 0xd4, 0x38, 0, 0, buf, 1,
+ 1000);
+ v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
+ "control request returned %d\n", ret);
+
+ /* boost analog audio */
+ buf[0] = boost_audio;
+ ret = usb_control_msg(dev->udev,
+ usb_sndctrlpipe(dev->udev, 0),
+ 0xd5, 0x38, 0, 0, buf, 1,
+ 1000);
+ v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
+ "control request returned %d\n", ret);
+ mutex_unlock(&dev->usbc_mutex);
+
+ dev->status = STATUS_IDLE;
+ return 0;
+}
+
+static const struct hdpvr_options hdpvr_default_options = {
+ .video_std = HDPVR_60HZ,
+ .video_input = HDPVR_COMPONENT,
+ .audio_input = HDPVR_RCA_BACK,
+ .bitrate = 65, /* 6 mbps */
+ .peak_bitrate = 90, /* 9 mbps */
+ .bitrate_mode = HDPVR_CONSTANT,
+ .gop_mode = HDPVR_SIMPLE_IDR_GOP,
+ .audio_codec = V4L2_MPEG_AUDIO_ENCODING_AAC,
+ /* original picture controls for firmware version <= 0x15 */
+ /* updated in device_authorization() for newer firmware */
+ .brightness = 0x86,
+ .contrast = 0x80,
+ .hue = 0x80,
+ .saturation = 0x80,
+ .sharpness = 0x80,
+};
+
+static int hdpvr_probe(struct usb_interface *interface,
+ const struct usb_device_id *id)
+{
+ struct hdpvr_device *dev;
+ struct usb_host_interface *iface_desc;
+ struct usb_endpoint_descriptor *endpoint;
+ struct i2c_client *client;
+ size_t buffer_size;
+ int i;
+ int retval = -ENOMEM;
+
+ /* allocate memory for our device state and initialize it */
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev) {
+ dev_err(&interface->dev, "Out of memory\n");
+ goto error;
+ }
+
+ /* init video transfer queues first of all */
+ /* to prevent oops in hdpvr_delete() on error paths */
+ INIT_LIST_HEAD(&dev->free_buff_list);
+ INIT_LIST_HEAD(&dev->rec_buff_list);
+
+ /* register v4l2_device early so it can be used for printks */
+ if (v4l2_device_register(&interface->dev, &dev->v4l2_dev)) {
+ dev_err(&interface->dev, "v4l2_device_register failed\n");
+ goto error;
+ }
+
+ mutex_init(&dev->io_mutex);
+ mutex_init(&dev->i2c_mutex);
+ mutex_init(&dev->usbc_mutex);
+ dev->usbc_buf = kmalloc(64, GFP_KERNEL);
+ if (!dev->usbc_buf) {
+ v4l2_err(&dev->v4l2_dev, "Out of memory\n");
+ goto error;
+ }
+
+ init_waitqueue_head(&dev->wait_buffer);
+ init_waitqueue_head(&dev->wait_data);
+
+ dev->workqueue = create_singlethread_workqueue("hdpvr_buffer");
+ if (!dev->workqueue)
+ goto error;
+
+ dev->options = hdpvr_default_options;
+
+ if (default_video_input < HDPVR_VIDEO_INPUTS)
+ dev->options.video_input = default_video_input;
+
+ if (default_audio_input < HDPVR_AUDIO_INPUTS) {
+ dev->options.audio_input = default_audio_input;
+ if (default_audio_input == HDPVR_SPDIF)
+ dev->options.audio_codec =
+ V4L2_MPEG_AUDIO_ENCODING_AC3;
+ }
+
+ dev->udev = usb_get_dev(interface_to_usbdev(interface));
+
+ /* set up the endpoint information */
+ /* use only the first bulk-in and bulk-out endpoints */
+ iface_desc = interface->cur_altsetting;
+ for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
+ endpoint = &iface_desc->endpoint[i].desc;
+
+ if (!dev->bulk_in_endpointAddr &&
+ usb_endpoint_is_bulk_in(endpoint)) {
+ /* USB interface description is buggy, reported max
+ * packet size is 512 bytes, windows driver uses 8192 */
+ buffer_size = 8192;
+ dev->bulk_in_size = buffer_size;
+ dev->bulk_in_endpointAddr = endpoint->bEndpointAddress;
+ }
+
+ }
+ if (!dev->bulk_in_endpointAddr) {
+ v4l2_err(&dev->v4l2_dev, "Could not find bulk-in endpoint\n");
+ goto error;
+ }
+
+ /* init the device */
+ if (hdpvr_device_init(dev)) {
+ v4l2_err(&dev->v4l2_dev, "device init failed\n");
+ goto error;
+ }
+
+ mutex_lock(&dev->io_mutex);
+ if (hdpvr_alloc_buffers(dev, NUM_BUFFERS)) {
+ mutex_unlock(&dev->io_mutex);
+ v4l2_err(&dev->v4l2_dev,
+ "allocating transfer buffers failed\n");
+ goto error;
+ }
+ mutex_unlock(&dev->io_mutex);
+
+#if IS_ENABLED(CONFIG_I2C)
+ retval = hdpvr_register_i2c_adapter(dev);
+ if (retval < 0) {
+ v4l2_err(&dev->v4l2_dev, "i2c adapter register failed\n");
+ goto error;
+ }
+
+ client = hdpvr_register_ir_rx_i2c(dev);
+ if (!client) {
+ v4l2_err(&dev->v4l2_dev, "i2c IR RX device register failed\n");
+ retval = -ENODEV;
+ goto reg_fail;
+ }
+
+ client = hdpvr_register_ir_tx_i2c(dev);
+ if (!client) {
+ v4l2_err(&dev->v4l2_dev, "i2c IR TX device register failed\n");
+ retval = -ENODEV;
+ goto reg_fail;
+ }
+#endif
+
+ retval = hdpvr_register_videodev(dev, &interface->dev,
+ video_nr[atomic_inc_return(&dev_nr)]);
+ if (retval < 0) {
+ v4l2_err(&dev->v4l2_dev, "registering videodev failed\n");
+ goto reg_fail;
+ }
+
+ /* let the user know what node this device is now attached to */
+ v4l2_info(&dev->v4l2_dev, "device now attached to %s\n",
+ video_device_node_name(&dev->video_dev));
+ return 0;
+
+reg_fail:
+#if IS_ENABLED(CONFIG_I2C)
+ i2c_del_adapter(&dev->i2c_adapter);
+#endif
+error:
+ if (dev) {
+ /* Destroy single thread */
+ if (dev->workqueue)
+ destroy_workqueue(dev->workqueue);
+ /* this frees allocated memory */
+ hdpvr_delete(dev);
+ }
+ return retval;
+}
+
+static void hdpvr_disconnect(struct usb_interface *interface)
+{
+ struct hdpvr_device *dev = to_hdpvr_dev(usb_get_intfdata(interface));
+
+ v4l2_info(&dev->v4l2_dev, "device %s disconnected\n",
+ video_device_node_name(&dev->video_dev));
+ /* prevent more I/O from starting and stop any ongoing */
+ mutex_lock(&dev->io_mutex);
+ dev->status = STATUS_DISCONNECTED;
+ wake_up_interruptible(&dev->wait_data);
+ wake_up_interruptible(&dev->wait_buffer);
+ mutex_unlock(&dev->io_mutex);
+ v4l2_device_disconnect(&dev->v4l2_dev);
+ msleep(100);
+ flush_workqueue(dev->workqueue);
+ mutex_lock(&dev->io_mutex);
+ hdpvr_cancel_queue(dev);
+ mutex_unlock(&dev->io_mutex);
+#if IS_ENABLED(CONFIG_I2C)
+ i2c_del_adapter(&dev->i2c_adapter);
+#endif
+ video_unregister_device(&dev->video_dev);
+ atomic_dec(&dev_nr);
+}
+
+
+static struct usb_driver hdpvr_usb_driver = {
+ .name = "hdpvr",
+ .probe = hdpvr_probe,
+ .disconnect = hdpvr_disconnect,
+ .id_table = hdpvr_table,
+};
+
+module_usb_driver(hdpvr_usb_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_VERSION("0.2.1");
+MODULE_AUTHOR("Janne Grunau");
+MODULE_DESCRIPTION("Hauppauge HD PVR driver");
Code Review / kvmfornfv.git / blobdiff