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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/media/dvb-drivers/dvb-usb.rst for more information
*/
#include "gl861.h"
#include "zl10353.h"
#include "qt1010.h"
DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
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 + 1);
int wo = (rbuf == NULL || rlen == 0); /* write-only */
u8 req, type;
u8 *buf;
int ret;
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:
dev_err(&d->udev->dev, "%s: wlen=%d, aborting\n",
KBUILD_MODNAME, wlen);
return -EINVAL;
}
buf = NULL;
if (rlen > 0) {
buf = kmalloc(rlen, GFP_KERNEL);
if (!buf)
return -ENOMEM;
}
usleep_range(1000, 2000); /* avoid I2C errors */
ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), req, type,
value, index, buf, rlen, 2000);
if (rlen > 0) {
if (ret > 0)
memcpy(rbuf, buf, rlen);
kfree(buf);
}
return ret;
}
/* 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 (num > 2)
return -EINVAL;
if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
return -EAGAIN;
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 struct zl10353_config gl861_zl10353_config = {
.demod_address = 0x0f,
.no_tuner = 1,
.parallel_ts = 1,
};
static int gl861_frontend_attach(struct dvb_usb_adapter *adap)
{
adap->fe[0] = dvb_attach(zl10353_attach, &gl861_zl10353_config,
&adap_to_d(adap)->i2c_adap);
if (adap->fe[0] == NULL)
return -EIO;
return 0;
}
static struct qt1010_config gl861_qt1010_config = {
.i2c_address = 0x62
};
static int gl861_tuner_attach(struct dvb_usb_adapter *adap)
{
return dvb_attach(qt1010_attach,
adap->fe[0], &adap_to_d(adap)->i2c_adap,
&gl861_qt1010_config) == NULL ? -ENODEV : 0;
}
static int gl861_init(struct dvb_usb_device *d)
{
/*
* There is 2 interfaces. Interface 0 is for TV and interface 1 is
* for HID remote controller. Interface 0 has 2 alternate settings.
* For some reason we need to set interface explicitly, defaulted
* as alternate setting 1?
*/
return usb_set_interface(d->udev, 0, 0);
}
/* DVB USB Driver stuff */
static struct dvb_usb_device_properties gl861_props = {
.driver_name = KBUILD_MODNAME,
.owner = THIS_MODULE,
.adapter_nr = adapter_nr,
.i2c_algo = &gl861_i2c_algo,
.frontend_attach = gl861_frontend_attach,
.tuner_attach = gl861_tuner_attach,
.init = gl861_init,
.num_adapters = 1,
.adapter = {
{
.stream = DVB_USB_STREAM_BULK(0x81, 7, 512),
}
}
};
static const struct usb_device_id gl861_id_table[] = {
{ DVB_USB_DEVICE(USB_VID_MSI, USB_PID_MSI_MEGASKY580_55801,
&gl861_props, "MSI Mega Sky 55801 DVB-T USB2.0", NULL) },
{ DVB_USB_DEVICE(USB_VID_ALINK, USB_VID_ALINK_DTU,
&gl861_props, "A-LINK DTU DVB-T USB2.0", NULL) },
{ }
};
MODULE_DEVICE_TABLE(usb, gl861_id_table);
static struct usb_driver gl861_usb_driver = {
.name = KBUILD_MODNAME,
.id_table = gl861_id_table,
.probe = dvb_usbv2_probe,
.disconnect = dvb_usbv2_disconnect,
.suspend = dvb_usbv2_suspend,
.resume = dvb_usbv2_resume,
.reset_resume = dvb_usbv2_reset_resume,
.no_dynamic_id = 1,
.soft_unbind = 1,
};
module_usb_driver(gl861_usb_driver);
MODULE_AUTHOR("Carl Lundqvist <comabug@gmail.com>");
MODULE_DESCRIPTION("Driver MSI Mega Sky 580 DVB-T USB2.0 / GL861");
MODULE_VERSION("0.1");
MODULE_LICENSE("GPL");
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