diff options
Diffstat (limited to 'drivers/media/usb/hdpvr/hdpvr-core.c')
| -rw-r--r-- | drivers/media/usb/hdpvr/hdpvr-core.c | 472 |
1 files changed, 472 insertions, 0 deletions
diff --git a/drivers/media/usb/hdpvr/hdpvr-core.c b/drivers/media/usb/hdpvr/hdpvr-core.c new file mode 100644 index 00000000000..304f43ef59e --- /dev/null +++ b/drivers/media/usb/hdpvr/hdpvr-core.c @@ -0,0 +1,472 @@ +/* + * 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); + + 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"); + return retval; + } +#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 unlock; + } +#ifdef HDPVR_DEBUG + else { + hex_dump_to_buffer(dev->usbc_buf, 46, 16, 1, print_buf, + 5*buf_size+1, 0); + v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, + "Status request returned, len %d: %s\n", + ret, print_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: + 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 + hex_dump_to_buffer(response, 8, 16, 1, print_buf, 5*buf_size+1, 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, 5*buf_size+1, 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); + + retval = ret != 8; +unlock: + mutex_unlock(&dev->usbc_mutex); + 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, + /* 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; + } + + dev->workqueue = 0; + + /* 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; + + /* 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; + 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 (hdpvr_register_videodev(dev, &interface->dev, + video_nr[atomic_inc_return(&dev_nr)])) { + v4l2_err(&dev->v4l2_dev, "registering videodev failed\n"); + goto error; + } + +#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) + 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"); + goto reg_fail; + } + + client = hdpvr_register_ir_tx_i2c(dev); + if (!client) { + v4l2_err(&dev->v4l2_dev, "i2c IR TX device register failed\n"); + goto reg_fail; + } +#endif + + /* 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 defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) + 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 defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) + 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"); |