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/* DVB USB compliant linux driver for GL861 USB2.0 devices.
*
* 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.
*
* see Documentation/dvb/README.dvb-usb for more information
*/
#include "gl861.h"
#include "zl10353.h"
#include "qt1010.h"
/* debug */
int dvb_usb_gl861_debug;
module_param_named(debug,dvb_usb_gl861_debug, int, 0644);
MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS);
static int gl861_i2c_msg(struct dvb_usb_device *d, u8 addr,
u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
{
u16 index;
u16 value = addr << 8;
int wo = (rbuf == NULL || rlen == 0); /* write-only */
u8 req, type;
if (wo) {
req = GL861_REQ_I2C_WRITE;
type = GL861_WRITE;
} else { /* rw */
req = GL861_REQ_I2C_READ;
type = GL861_READ;
}
switch (wlen) {
case 1:
index = wbuf[0];
break;
case 2:
index = wbuf[0];
value = value + wbuf[1];
break;
default:
warn("wlen = %x, aborting.", wlen);
return -EINVAL;
}
return usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), req, type,
value, index, rbuf, rlen, 2000);
}
/* I2C */
static int gl861_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
int num)
{
struct dvb_usb_device *d = i2c_get_adapdata(adap);
int i;
if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
return -EAGAIN;
if (num > 2)
return -EINVAL;
for (i = 0; i < num; i++) {
/* write/read request */
if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
if (gl861_i2c_msg(d, msg[i].addr, msg[i].buf,
msg[i].len, msg[i+1].buf, msg[i+1].len) < 0)
break;
i++;
} else
if (gl861_i2c_msg(d, msg[i].addr, msg[i].buf,
msg[i].len, NULL, 0) < 0)
break;
}
mutex_unlock(&d->i2c_mutex);
return i;
}
static u32 gl861_i2c_func(struct i2c_adapter *adapter)
{
return I2C_FUNC_I2C;
}
static struct i2c_algorithm gl861_i2c_algo = {
.master_xfer = gl861_i2c_xfer,
.functionality = gl861_i2c_func,
};
/* Callbacks for DVB USB */
static int gl861_identify_state(struct usb_device *udev,
struct dvb_usb_device_properties *props,
struct dvb_usb_device_description **desc,
int *cold)
{
*cold = 0;
return 0;
}
static struct zl10353_config gl861_zl10353_config = {
.demod_address = 0x1e,
.no_tuner = 1,
};
static int gl861_frontend_attach(struct dvb_usb_adapter *adap)
{
if ((adap->fe = dvb_attach(zl10353_attach, &gl861_zl10353_config,
&adap->dev->i2c_adap)) != NULL) {
return 0;
}
return -EIO;
}
/* DVB USB Driver stuff */
static struct dvb_usb_device_properties gl861_properties;
static int gl861_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct dvb_usb_device *d;
struct usb_host_interface *alt;
int ret;
if (intf->num_altsetting < 2)
return -ENODEV;
if ((ret = dvb_usb_device_init(intf, &gl861_properties, THIS_MODULE,
&d)) == 0) {
alt = usb_altnum_to_altsetting(intf, 0);
if (alt == NULL) {
deb_rc("not alt found!\n");
return -ENODEV;
}
ret = usb_set_interface(d->udev, alt->desc.bInterfaceNumber,
alt->desc.bAlternateSetting);
}
return ret;
}
static struct usb_device_id gl861_table [] = {
{ USB_DEVICE(USB_VID_MSI, USB_PID_MSI_MEGASKY580_55801) },
{} /* Terminating entry */
};
MODULE_DEVICE_TABLE (usb, gl861_table);
static struct dvb_usb_device_properties gl861_properties = {
.usb_ctrl = DEVICE_SPECIFIC,
.size_of_priv = 0,
.identify_state = gl861_identify_state,
.num_adapters = 1,
.adapter = {{
.caps = DVB_USB_IS_AN_I2C_ADAPTER,
.frontend_attach = gl861_frontend_attach,
.tuner_attach = qt1010_tuner_attach,
.stream = {
.type = USB_BULK,
.count = 7,
.endpoint = 0x81,
.u = {
.bulk = {
.buffersize = 512,
}
}
},
}},
.i2c_algo = &gl861_i2c_algo,
.generic_bulk_ctrl_endpoint = 0x01,
.num_device_descs = 1,
.devices = {
{ "MSI Mega Sky 55801 DVB-T USB2.0",
{ &gl861_table[0], NULL },
{ NULL },
},
}
};
static struct usb_driver gl861_driver = {
.name = "dvb_usb_gl861",
.probe = gl861_probe,
.disconnect = dvb_usb_device_exit,
.id_table = gl861_table,
};
/* module stuff */
static int __init gl861_module_init(void)
{
int ret;
if ((ret = usb_register(&gl861_driver))) {
err("usb_register failed. Error number %d", ret);
return ret;
}
return 0;
}
static void __exit gl861_module_exit(void)
{
/* deregister this driver from the USB subsystem */
usb_deregister(&gl861_driver);
}
module_init (gl861_module_init);
module_exit (gl861_module_exit);
MODULE_AUTHOR("Carl Lundqvist <comabug@gmail.com>");
MODULE_DESCRIPTION("Driver MSI Mega Sky 580 DVB-T USB2.0 / GL861");
MODULE_VERSION("1.0");
MODULE_LICENSE("GPL");
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