1 files changed, 233 insertions, 0 deletions

diff --git a/drivers/media/dvb/dvb-usb/gl861.c b/drivers/media/dvb/dvb-usb/gl861.c
new file mode 100644
index 00000000000..6f596ed4176
--- /dev/null
+++ b/drivers/media/dvb/dvb-usb/gl861.c
@@ -0,0 +1,233 @@
+/* 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 */
+static 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);
+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:
+                warn("wlen = %x, aborting.", 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 = dvb_attach(zl10353_attach, &gl861_zl10353_config,
+                &adap->dev->i2c_adap);
+        if (adap->fe == 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, &adap->dev->i2c_adap,
+                          &gl861_qt1010_config) == NULL ? -ENODEV : 0;
+}
+
+/* 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;
+
+        ret = dvb_usb_device_init(intf, &gl861_properties, THIS_MODULE, &d,
+                                  adapter_nr);
+        if (ret == 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) },
+                { USB_DEVICE(USB_VID_ALINK, USB_VID_ALINK_DTU) },
+                { }             /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(usb, gl861_table);
+
+static struct dvb_usb_device_properties gl861_properties = {
+        .caps = DVB_USB_IS_AN_I2C_ADAPTER,
+        .usb_ctrl = DEVICE_SPECIFIC,
+
+        .size_of_priv     = 0,
+
+        .num_adapters = 1,
+        .adapter = {{
+
+                .frontend_attach  = gl861_frontend_attach,
+                .tuner_attach     = gl861_tuner_attach,
+
+                .stream = {
+                        .type = USB_BULK,
+                        .count = 7,
+                        .endpoint = 0x81,
+                        .u = {
+                                .bulk = {
+                                        .buffersize = 512,
+                                }
+                        }
+                },
+        } },
+        .i2c_algo         = &gl861_i2c_algo,
+
+        .num_device_descs = 2,
+        .devices = {
+                {
+                        .name = "MSI Mega Sky 55801 DVB-T USB2.0",
+                        .cold_ids = { NULL },
+                        .warm_ids = { &gl861_table[0], NULL },
+                },
+                {
+                        .name = "A-LINK DTU DVB-T USB2.0",
+                        .cold_ids = { NULL },
+                        .warm_ids = { &gl861_table[1], 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;
+
+        ret = usb_register(&gl861_driver);
+        if (ret)
+                err("usb_register failed. Error number %d", ret);
+
+        return ret;
+}
+
+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("0.1");
+MODULE_LICENSE("GPL");