diff options
Diffstat (limited to 'drivers/media/usb/dvb-usb-v2/gl861.c')
| -rw-r--r-- | drivers/media/usb/dvb-usb-v2/gl861.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/drivers/media/usb/dvb-usb-v2/gl861.c b/drivers/media/usb/dvb-usb-v2/gl861.c new file mode 100644 index 000000000000..cf29f43e3598 --- /dev/null +++ b/drivers/media/usb/dvb-usb-v2/gl861.c @@ -0,0 +1,175 @@ +/* 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" + +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; + + 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: + pr_err("%s: wlen=%d, aborting\n", KBUILD_MODNAME, wlen); + return -EINVAL; + } + + msleep(1); /* avoid I2C errors */ + + 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 (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, + .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"); |
