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path: root/drivers/media/video/hdpvr/hdpvr-core.c
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Diffstat (limited to 'drivers/media/video/hdpvr/hdpvr-core.c')
-rw-r--r--drivers/media/video/hdpvr/hdpvr-core.c466
1 files changed, 466 insertions, 0 deletions
diff --git a/drivers/media/video/hdpvr/hdpvr-core.c b/drivers/media/video/hdpvr/hdpvr-core.c
new file mode 100644
index 00000000000..188bd5aea25
--- /dev/null
+++ b/drivers/media/video/hdpvr/hdpvr-core.c
@@ -0,0 +1,466 @@
+/*
+ * 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 <asm/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");
+
+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");
+
+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 int 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) },
+ { } /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(usb, hdpvr_table);
+
+
+void hdpvr_delete(struct hdpvr_device *dev)
+{
+ hdpvr_free_buffers(dev);
+
+ if (dev->video_dev)
+ video_device_release(dev->video_dev);
+
+ usb_put_dev(dev->udev);
+}
+
+static void challenge(u8 *bytes)
+{
+ u64 *i64P, 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 = (u64 *)bytes;
+ tmp64 = le64_to_cpup(i64P);
+ 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;
+#ifdef HDPVR_DEBUG
+ size_t buf_size = 46;
+ char *print_buf = kzalloc(5*buf_size+1, GFP_KERNEL);
+ if (!print_buf) {
+ v4l2_err(&dev->v4l2_dev, "Out of memory\n");
+ goto error;
+ }
+#endif
+
+ 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 error;
+ }
+#ifdef HDPVR_DEBUG
+ else {
+ hex_dump_to_buffer(dev->usbc_buf, 46, 16, 1, print_buf,
+ sizeof(print_buf), 0);
+ v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
+ "Status request returned, len %d: %s\n",
+ ret, print_buf);
+ }
+#endif
+ if (dev->usbc_buf[1] == HDPVR_FIRMWARE_VERSION) {
+ dev->flags &= ~HDPVR_FLAG_AC3_CAP;
+ } else if (dev->usbc_buf[1] == HDPVR_FIRMWARE_VERSION_AC3) {
+ dev->flags |= HDPVR_FLAG_AC3_CAP;
+ } else if (dev->usbc_buf[1] > HDPVR_FIRMWARE_VERSION_AC3) {
+ v4l2_info(&dev->v4l2_dev, "untested firmware version 0x%x, "
+ "the driver might not work\n", dev->usbc_buf[1]);
+ dev->flags |= HDPVR_FLAG_AC3_CAP;
+ } else {
+ v4l2_err(&dev->v4l2_dev, "unknown firmware version 0x%x\n",
+ dev->usbc_buf[1]);
+ ret = -EINVAL;
+ goto error;
+ }
+
+ response = dev->usbc_buf+38;
+#ifdef HDPVR_DEBUG
+ hex_dump_to_buffer(response, 8, 16, 1, print_buf, sizeof(print_buf), 0);
+ v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, "challenge: %s\n",
+ print_buf);
+#endif
+ challenge(response);
+#ifdef HDPVR_DEBUG
+ hex_dump_to_buffer(response, 8, 16, 1, print_buf, sizeof(print_buf), 0);
+ v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, " response: %s\n",
+ print_buf);
+#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);
+ mutex_unlock(&dev->usbc_mutex);
+
+ retval = ret != 8;
+error:
+ return retval;
+}
+
+static int hdpvr_device_init(struct hdpvr_device *dev)
+{
+ int ret;
+ u8 *buf;
+ struct hdpvr_video_info *vidinf;
+
+ 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);
+
+ vidinf = get_video_info(dev);
+ if (!vidinf)
+ v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
+ "no valid video signal or device init failed\n");
+ else
+ kfree(vidinf);
+
+ /* 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,
+ .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;
+ 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) {
+ err("Out of memory");
+ goto error;
+ }
+
+ /* register v4l2_device early so it can be used for printks */
+ if (v4l2_device_register(&interface->dev, &dev->v4l2_dev)) {
+ err("v4l2_device_register failed");
+ 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;
+
+ /* init video transfer queues */
+ INIT_LIST_HEAD(&dev->free_buff_list);
+ INIT_LIST_HEAD(&dev->rec_buff_list);
+
+ 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;
+
+ 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)) {
+ v4l2_err(&dev->v4l2_dev,
+ "allocating transfer buffers failed\n");
+ goto error;
+ }
+ mutex_unlock(&dev->io_mutex);
+
+ if (hdpvr_register_videodev(dev, &interface->dev,
+ video_nr[atomic_inc_return(&dev_nr)])) {
+ v4l2_err(&dev->v4l2_dev, "registering videodev failed\n");
+ goto error;
+ }
+
+#ifdef CONFIG_I2C
+ /* until i2c is working properly */
+ retval = 0; /* hdpvr_register_i2c_adapter(dev); */
+ if (retval < 0) {
+ v4l2_err(&dev->v4l2_dev, "registering i2c adapter failed\n");
+ goto error;
+ }
+#endif /* CONFIG_I2C */
+
+ /* save our data pointer in this interface device */
+ usb_set_intfdata(interface, dev);
+
+ /* let the user know what node this device is now attached to */
+ v4l2_info(&dev->v4l2_dev, "device now attached to /dev/video%d\n",
+ dev->video_dev->minor);
+ return 0;
+
+error:
+ if (dev) {
+ mutex_unlock(&dev->io_mutex);
+ /* this frees allocated memory */
+ hdpvr_delete(dev);
+ }
+ return retval;
+}
+
+static void hdpvr_disconnect(struct usb_interface *interface)
+{
+ struct hdpvr_device *dev;
+ int minor;
+
+ dev = usb_get_intfdata(interface);
+ usb_set_intfdata(interface, NULL);
+
+ minor = dev->video_dev->minor;
+
+ /* prevent more I/O from starting and stop any ongoing */
+ mutex_lock(&dev->io_mutex);
+ dev->status = STATUS_DISCONNECTED;
+ v4l2_device_disconnect(&dev->v4l2_dev);
+ video_unregister_device(dev->video_dev);
+ wake_up_interruptible(&dev->wait_data);
+ wake_up_interruptible(&dev->wait_buffer);
+ mutex_unlock(&dev->io_mutex);
+ msleep(100);
+ flush_workqueue(dev->workqueue);
+ mutex_lock(&dev->io_mutex);
+ hdpvr_cancel_queue(dev);
+ destroy_workqueue(dev->workqueue);
+ mutex_unlock(&dev->io_mutex);
+
+ /* deregister I2C adapter */
+#ifdef CONFIG_I2C
+ mutex_lock(&dev->i2c_mutex);
+ if (dev->i2c_adapter)
+ i2c_del_adapter(dev->i2c_adapter);
+ kfree(dev->i2c_adapter);
+ dev->i2c_adapter = NULL;
+ mutex_unlock(&dev->i2c_mutex);
+#endif /* CONFIG_I2C */
+
+ atomic_dec(&dev_nr);
+
+ v4l2_info(&dev->v4l2_dev, "device /dev/video%d disconnected\n", minor);
+
+ v4l2_device_unregister(&dev->v4l2_dev);
+ kfree(dev->usbc_buf);
+ kfree(dev);
+}
+
+
+static struct usb_driver hdpvr_usb_driver = {
+ .name = "hdpvr",
+ .probe = hdpvr_probe,
+ .disconnect = hdpvr_disconnect,
+ .id_table = hdpvr_table,
+};
+
+static int __init hdpvr_init(void)
+{
+ int result;
+
+ /* register this driver with the USB subsystem */
+ result = usb_register(&hdpvr_usb_driver);
+ if (result)
+ err("usb_register failed. Error number %d", result);
+
+ return result;
+}
+
+static void __exit hdpvr_exit(void)
+{
+ /* deregister this driver with the USB subsystem */
+ usb_deregister(&hdpvr_usb_driver);
+}
+
+module_init(hdpvr_init);
+module_exit(hdpvr_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Janne Grunau");
+MODULE_DESCRIPTION("Hauppauge HD PVR driver");