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linux/drivers/media/video/au0828/au0828-core.c
Steven Toth 265a651062 V4L/DVB (7621): Add support for Hauppauge HVR950Q/HVR850/FusioHDTV7-USB
Including support for the AU0828 USB Bridge.
Including support for the AU8522 ATSC/QAM Demodulator.
Including support for the AU8522 ATSC/QAM Demodulator.

Signed-off-by: Steven Toth <stoth@hauppauge.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24 14:09:42 -03:00

253 lines
6.0 KiB
C

/*
* Driver for the Auvitek USB bridge
*
* Copyright (c) 2008 Steven Toth <stoth@hauppauge.com>
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
*
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/module.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <linux/mutex.h>
#include "au0828.h"
static unsigned int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "enable debug messages");
#define _err(fmt, arg...)\
do {\
printk(KERN_ERR DRIVER_NAME "/0: " fmt, ## arg);\
} while (0)
#define _info(fmt, arg...)\
do {\
printk(KERN_INFO DRIVER_NAME "/0: " fmt, ## arg);\
} while (0)
#define _dbg(level, fmt, arg...)\
do {\
if (debug >= level) \
printk(KERN_DEBUG DRIVER_NAME "/0: " fmt, ## arg);\
} while (0)
#define _AU0828_BULKPIPE 0x03
#define _BULKPIPESIZE 0xffff
static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value,
u16 index, unsigned char *cp, u16 size);
static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value,
u16 index, unsigned char *cp, u16 size);
/* USB Direction */
#define CMD_REQUEST_IN 0x00
#define CMD_REQUEST_OUT 0x01
u32 au0828_readreg(struct au0828_dev *dev, u16 reg)
{
recv_control_msg(dev, CMD_REQUEST_IN, 0, reg, dev->ctrlmsg, 1);
_dbg(3,"%s(0x%x) = 0x%x\n", __FUNCTION__, reg, dev->ctrlmsg[0]);
return dev->ctrlmsg[0];
}
u32 au0828_writereg(struct au0828_dev *dev, u16 reg, u32 val)
{
_dbg(3,"%s(0x%x, 0x%x)\n", __FUNCTION__, reg, val);
return send_control_msg(dev, CMD_REQUEST_OUT, val, reg, dev->ctrlmsg, 0);
}
static void cmd_msg_dump(struct au0828_dev *dev)
{
int i;
for (i = 0;i < sizeof(dev->ctrlmsg); i+=16)
_dbg(1,"%s() %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x "
"%02x %02x %02x %02x %02x %02x\n",
__FUNCTION__,
dev->ctrlmsg[i+0], dev->ctrlmsg[i+1],
dev->ctrlmsg[i+2], dev->ctrlmsg[i+3],
dev->ctrlmsg[i+4], dev->ctrlmsg[i+5],
dev->ctrlmsg[i+6], dev->ctrlmsg[i+7],
dev->ctrlmsg[i+8], dev->ctrlmsg[i+9],
dev->ctrlmsg[i+10], dev->ctrlmsg[i+11],
dev->ctrlmsg[i+12], dev->ctrlmsg[i+13],
dev->ctrlmsg[i+14], dev->ctrlmsg[i+15]);
}
static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value,
u16 index, unsigned char *cp, u16 size)
{
int status = -ENODEV;
mutex_lock(&dev->mutex);
if (dev->usbdev) {
/* cp must be memory that has been allocated by kmalloc */
status = usb_control_msg(dev->usbdev,
usb_sndctrlpipe(dev->usbdev, 0),
request,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
value, index,
cp, size, 1000);
status = min(status, 0);
if (status < 0) {
_err("%s() Failed sending control message, error %d.\n",
__FUNCTION__,
status);
}
}
mutex_unlock(&dev->mutex);
return status;
}
static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value,
u16 index, unsigned char *cp, u16 size)
{
int status = -ENODEV;
mutex_lock(&dev->mutex);
if (dev->usbdev) {
memset(dev->ctrlmsg, 0, sizeof(dev->ctrlmsg));
/* cp must be memory that has been allocated by kmalloc */
status = usb_control_msg(dev->usbdev,
usb_rcvctrlpipe(dev->usbdev, 0),
request,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
value, index,
cp, size, 1000);
status = min(status, 0);
if (status < 0) {
_err("%s() Failed receiving ctrl msg, error %d.\n",
__FUNCTION__,
status);
}
else
if (debug > 4)
cmd_msg_dump(dev);
}
mutex_unlock(&dev->mutex);
return status;
}
static void au0828_usb_disconnect(struct usb_interface *interface)
{
struct au0828_dev *dev = usb_get_intfdata(interface);
_dbg(1,"%s()\n", __FUNCTION__);
/* Digital TV */
au0828_dvb_unregister(dev);
/* I2C */
au0828_i2c_unregister(dev);
usb_set_intfdata(interface, NULL);
mutex_lock(&dev->mutex);
dev->usbdev = NULL;
mutex_unlock(&dev->mutex);
kfree(dev);
}
static int au0828_usb_probe (struct usb_interface *interface,
const struct usb_device_id *id)
{
int ifnum;
struct au0828_dev *dev;
struct usb_device *usbdev = interface_to_usbdev(interface);
ifnum = interface->altsetting->desc.bInterfaceNumber;
if (ifnum != 0)
return -ENODEV;
_dbg(1,"%s() vendor id 0x%x device id 0x%x ifnum:%d\n",
__FUNCTION__,
le16_to_cpu(usbdev->descriptor.idVendor),
le16_to_cpu(usbdev->descriptor.idProduct),
ifnum);
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (dev == NULL) {
_err("Unable to allocate memory\n");
return -ENOMEM;
}
mutex_init(&dev->mutex);
mutex_init(&dev->dvb.lock);
dev->usbdev = usbdev;
dev->board = id->driver_info;
usb_set_intfdata(interface, dev);
/* Power Up the bridge */
au0828_write(dev, REG_600, 1 << 4);
/* Bring up the GPIO's and supporting devices */
au0828_gpio_setup(dev);
/* I2C */
au0828_i2c_register(dev);
/* Digital TV */
au0828_dvb_register(dev);
_info("Registered device AU0828 [%s]\n",
au0828_boards[dev->board].name);
return 0;
}
static struct usb_driver au0828_usb_driver = {
.name = DRIVER_NAME,
.probe = au0828_usb_probe,
.disconnect = au0828_usb_disconnect,
.id_table = au0828_usb_id_table,
};
static int __init au0828_init(void)
{
int ret;
_info("au0828 driver loaded\n");
ret = usb_register(&au0828_usb_driver);
if (ret)
_err("usb_register failed, error = %d\n", ret);
return ret;
}
static void __exit au0828_exit(void)
{
usb_deregister(&au0828_usb_driver);
}
module_init(au0828_init);
module_exit(au0828_exit);
MODULE_DESCRIPTION("Driver for Auvitek AU0828 based products");
MODULE_AUTHOR("Steven Toth <stoth@hauppauge.com>");
MODULE_LICENSE("GPL");