1 files changed, 439 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 000000000000..e7300b570bb7
--- /dev/null
+++ b/drivers/media/video/hdpvr/hdpvr-core.c
@@ -0,0 +1,439 @@
+/*
+ * Hauppage 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) {
+                dev_err(&dev->udev->dev, "Out of memory");
+                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) {
+                dev_err(&dev->udev->dev,
+                        "unexpected answer of status request, len %d", ret);
+                goto error;
+        }
+#ifdef HDPVR_DEBUG
+        else {
+                hex_dump_to_buffer(dev->usbc_buf, 46, 16, 1, print_buf,
+                                   sizeof(print_buf), 0);
+                dev_dbg(&dev->udev->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) {
+                dev_notice(&dev->udev->dev, "untested firmware version 0x%x, "
+                           "the driver might not work\n", dev->usbc_buf[1]);
+                dev->flags |= HDPVR_FLAG_AC3_CAP;
+        } else {
+                dev_err(&dev->udev->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);
+        dev_dbg(&dev->udev->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);
+        dev_dbg(&dev->udev->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);
+        dev_dbg(&dev->udev->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);
+        dev_dbg(&dev->udev->dev, "control request returned %d\n", ret);
+        mutex_unlock(&dev->usbc_mutex);
+
+        vidinf = get_video_info(dev);
+        if (!vidinf)
+                dev_dbg(&dev->udev->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);
+        dev_dbg(&dev->udev->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);
+        dev_dbg(&dev->udev->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;
+        }
+        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) {
+                dev_err(&dev->udev->dev, "Out of memory");
+                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) {
+                err("Could not find bulk-in endpoint");
+                goto error;
+        }
+
+        /* init the device */
+        if (hdpvr_device_init(dev)) {
+                err("device init failed");
+                goto error;
+        }
+
+        mutex_lock(&dev->io_mutex);
+        if (hdpvr_alloc_buffers(dev, NUM_BUFFERS)) {
+                err("allocating transfer buffers failed");
+                goto error;
+        }
+        mutex_unlock(&dev->io_mutex);
+
+        if (hdpvr_register_videodev(dev,
+                                    video_nr[atomic_inc_return(&dev_nr)])) {
+                err("registering videodev failed");
+                goto error;
+        }
+
+
+        /* 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->video_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;
+        video_unregister_device(dev->video_dev);
+        wake_up_interruptible(&dev->wait_data);
+        wake_up_interruptible(&dev->wait_buffer);
+        msleep(100);
+        flush_workqueue(dev->workqueue);
+        hdpvr_cancel_queue(dev);
+        destroy_workqueue(dev->workqueue);
+        mutex_unlock(&dev->io_mutex);
+
+        /* deregister I2C adapter */
+        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);
+
+        atomic_dec(&dev_nr);
+
+        printk(KERN_INFO "Hauppauge HD PVR: device /dev/video%d disconnected\n",
+               minor);
+
+        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");