V4L/DVB (5236): Initial support for Sigmatek DVB-110 DVB-T

This patch adds driver for Sigmatek DVB-110 USB DVB-T stick. Stick has based
on hardware of Qtuantek QT1010 tuner, Zarlink ZL10353 (Intel CE 6353)
demodulator and Alcor Micro AU6610 DVB-T USB controller. HW is rather similar
as used in MSI Megasky GL861.
Currently, the driver works only in USB 2.0. In my understanding USB 1.1 is
also supported by hw but I cannot test it due to lack of USB 1.1 port. Device
supports only isochronous mode transfers. There is also eeprom in usb
controller(at least in address range 0x80 - 0xbf) for storing data, eg.
firmware. Anyway, firmware loading is not used / required by the device.
There seems to be at least one unknown I2C device in address 0xa0, probably
remote control or GPIO. Windows drivers reads registers from 0x00 to 0x07
from this unknown address.
Driver is based on gl861 module. Tuner has a lot of problems to lock with
megasky qt1010 module with this hardware with some broadcasting standards.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

5 files changed, 273 insertions, 0 deletions

diff --git a/drivers/media/dvb/dvb-usb/Kconfig b/drivers/media/dvb/dvb-usb/Kconfig
index ca8258ef5e6b..6cbbaade73a5 100644
--- a/drivers/media/dvb/dvb-usb/Kconfig
+++ b/drivers/media/dvb/dvb-usb/Kconfig
@@ -128,6 +128,13 @@ config DVB_USB_GL861
           Say Y here to support the MSI Megasky 580 (55801) DVB-T USB2.0
           receiver with USB ID 0db0:5581.
 
+config DVB_USB_AU6610
+        tristate "Alcor Micro AU6610 USB2.0 support"
+        depends on DVB_USB
+        select DVB_ZL10353 if !DVB_FE_CUSTOMISE
+        help
+          Say Y here to support the Sigmatek DVB-110 DVB-T USB2.0 receiver.
+
 config DVB_USB_DIGITV
         tristate "Nebula Electronics uDigiTV DVB-T USB2.0 support"
         depends on DVB_USB
diff --git a/drivers/media/dvb/dvb-usb/Makefile b/drivers/media/dvb/dvb-usb/Makefile
index 53b63c584746..40f28f559b54 100644
--- a/drivers/media/dvb/dvb-usb/Makefile
+++ b/drivers/media/dvb/dvb-usb/Makefile
@@ -36,6 +36,9 @@ obj-$(CONFIG_DVB_USB_M920X) += dvb-usb-m920x.o
 dvb-usb-gl861-objs = gl861.o
 obj-$(CONFIG_DVB_USB_GL861) += dvb-usb-gl861.o
 
+dvb-usb-au6610-objs = au6610.o
+obj-$(CONFIG_DVB_USB_AU6610) += dvb-usb-au6610.o
+
 dvb-usb-digitv-objs = digitv.o
 obj-$(CONFIG_DVB_USB_DIGITV) += dvb-usb-digitv.o
 
diff --git a/drivers/media/dvb/dvb-usb/au6610.c b/drivers/media/dvb/dvb-usb/au6610.c
new file mode 100644
index 000000000000..1796a7d63aa1
--- /dev/null
+++ b/drivers/media/dvb/dvb-usb/au6610.c
@@ -0,0 +1,242 @@
+/* DVB USB compliant linux driver for Sigmatek DVB-110 DVB-T USB2.0 receiver
+ *
+ * Copyright (C) 2006 Antti Palosaari (crope@iki.fi)
+ *
+ *      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 "au6610.h"
+
+#include "zl10353.h"
+#include "qt1010.h"
+
+/* debug */
+static int dvb_usb_au6610_debug;
+module_param_named(debug, dvb_usb_au6610_debug, int, 0644);
+MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS);
+
+
+static int au6610_usb_msg(struct dvb_usb_device *d, u8 operation, u8 addr,
+                          u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
+{
+        int ret;
+        u16 index;
+        u8 usb_buf[6]; /* enough for all known requests, read returns 5 and write 6 bytes */
+
+        switch (wlen) {
+        case 1:
+                index = wbuf[0] << 8;
+                break;
+        case 2:
+                index = wbuf[0] << 8;
+                index += wbuf[1];
+                break;
+        default:
+                warn("wlen = %x, aborting.", wlen);
+                return -EINVAL;
+        }
+
+        ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), operation,
+                              USB_TYPE_VENDOR | USB_DIR_IN, addr, index, usb_buf,
+                              sizeof(usb_buf), AU6610_USB_TIMEOUT);
+
+        if (ret < 0)
+                return ret;
+
+        switch (operation) {
+        case AU6610_REQ_I2C_READ:
+        case AU6610_REQ_USB_READ:
+                /* requested value is always 5th byte in buffer */
+                rbuf[0] = usb_buf[4];
+        }
+
+        return ret;
+}
+
+static int au6610_i2c_msg(struct dvb_usb_device *d, u8 addr, u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
+{
+        u8 request;
+        u8 wo = (rbuf == NULL || rlen == 0); /* write-only */
+
+        if (wo) {
+                request = AU6610_REQ_I2C_WRITE;
+        } else { /* rw */
+                request = AU6610_REQ_I2C_READ;
+        }
+
+        return au6610_usb_msg(d, request, addr, wbuf, wlen, rbuf, rlen);
+}
+
+
+/* I2C */
+static int au6610_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 (au6610_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 (au6610_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 au6610_i2c_func(struct i2c_adapter *adapter)
+{
+        return I2C_FUNC_I2C;
+}
+
+static struct i2c_algorithm au6610_i2c_algo = {
+        .master_xfer   = au6610_i2c_xfer,
+        .functionality = au6610_i2c_func,
+};
+
+/* Callbacks for DVB USB */
+static int au6610_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 au6610_zl10353_config = {
+        .demod_address = 0x1e,
+        .no_tuner = 1,
+        .parallel_ts = 1,
+};
+
+
+static int au6610_zl10353_frontend_attach(struct dvb_usb_adapter *adap)
+{
+        if ((adap->fe = dvb_attach(zl10353_attach, &au6610_zl10353_config,
+                                   &adap->dev->i2c_adap)) != NULL) {
+                return 0;
+        }
+
+        return -EIO;
+}
+
+/* DVB USB Driver stuff */
+static struct dvb_usb_device_properties au6610_properties;
+
+static int au6610_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 < AU6610_ALTSETTING_COUNT)
+                return -ENODEV;
+
+        if ((ret = dvb_usb_device_init(intf, &au6610_properties, THIS_MODULE, &d)) == 0) {
+                alt = usb_altnum_to_altsetting(intf, AU6610_ALTSETTING);
+
+                if (alt == NULL) {
+                        deb_rc("no alt found!\n");
+                        return -ENODEV;
+                }
+                ret = usb_set_interface(d->udev, alt->desc.bInterfaceNumber,
+                                        alt->desc.bAlternateSetting);
+        }
+
+        return ret;
+}
+
+
+static struct usb_device_id au6610_table [] = {
+        { USB_DEVICE(USB_VID_ALCOR_MICRO, USB_PID_SIGMATEK_DVB_110) },
+        { }             /* Terminating entry */
+};
+MODULE_DEVICE_TABLE (usb, au6610_table);
+
+static struct dvb_usb_device_properties au6610_properties = {
+        .caps = DVB_USB_IS_AN_I2C_ADAPTER,
+        .usb_ctrl = DEVICE_SPECIFIC,
+        .size_of_priv     = 0,
+        .identify_state   = au6610_identify_state,
+        .num_adapters = 1,
+        .adapter = {
+                {
+                        .frontend_attach  = au6610_zl10353_frontend_attach,
+                        .tuner_attach     = qt1010_tuner_attach,
+
+                        .stream = {
+                                .type = USB_ISOC,
+                                .count = 5,
+                                .endpoint = 0x82,
+                                .u = {
+                                        .isoc = {
+                                                .framesperurb = 40,
+                                                .framesize = 942,   /* maximum packet size */
+                                                .interval = 1.25,   /* 125 us */
+                                        }
+                                }
+                        },
+                }
+        },
+        .i2c_algo = &au6610_i2c_algo,
+        .num_device_descs = 1,
+        .devices = {
+                {
+                        "Sigmatek DVB-110 DVB-T USB2.0",
+                        { &au6610_table[0], NULL },
+                        { NULL },
+                },
+        }
+};
+
+static struct usb_driver au6610_driver = {
+        .name       = "dvb_usb_au6610",
+        .probe      = au6610_probe,
+        .disconnect = dvb_usb_device_exit,
+        .id_table   = au6610_table,
+};
+
+/* module stuff */
+static int __init au6610_module_init(void)
+{
+        int ret;
+
+        if ((ret = usb_register(&au6610_driver))) {
+                err("usb_register failed. Error number %d", ret);
+                return ret;
+        }
+
+        return 0;
+}
+
+static void __exit au6610_module_exit(void)
+{
+        /* deregister this driver from the USB subsystem */
+        usb_deregister(&au6610_driver);
+}
+
+module_init (au6610_module_init);
+module_exit (au6610_module_exit);
+
+MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
+MODULE_DESCRIPTION("Driver Sigmatek DVB-110 DVB-T USB2.0 / AU6610");
+MODULE_VERSION("0.1");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/dvb/dvb-usb/au6610.h b/drivers/media/dvb/dvb-usb/au6610.h
new file mode 100644
index 000000000000..4161b054c713
--- /dev/null
+++ b/drivers/media/dvb/dvb-usb/au6610.h
@@ -0,0 +1,19 @@
+#ifndef _DVB_USB_AU6610_H_
+#define _DVB_USB_AU6610_H_
+
+#define DVB_USB_LOG_PREFIX "au6610"
+#include "dvb-usb.h"
+
+#define deb_rc(args...)   dprintk(dvb_usb_au6610_debug,0x01,args)
+
+#define AU6610_REQ_I2C_WRITE    0x14
+#define AU6610_REQ_I2C_READ     0x13
+#define AU6610_REQ_USB_WRITE    0x16
+#define AU6610_REQ_USB_READ     0x15
+
+#define AU6610_USB_TIMEOUT 1000
+
+#define AU6610_ALTSETTING_COUNT 6
+#define AU6610_ALTSETTING       5
+
+#endif
diff --git a/drivers/media/dvb/dvb-usb/dvb-usb-ids.h b/drivers/media/dvb/dvb-usb/dvb-usb-ids.h
index c3a42c193509..148386aba275 100644
--- a/drivers/media/dvb/dvb-usb/dvb-usb-ids.h
+++ b/drivers/media/dvb/dvb-usb/dvb-usb-ids.h
@@ -11,6 +11,7 @@
 
 /* Vendor IDs */
 #define USB_VID_ADSTECH                         0x06e1
+#define USB_VID_ALCOR_MICRO             0x058f
 #define USB_VID_ANCHOR                          0x0547
 #define USB_VID_AVERMEDIA                       0x07ca
 #define USB_VID_COMPRO                          0x185b
@@ -137,6 +138,7 @@
 #define USB_PID_WINFAST_DTV_DONGLE_STK7700P             0x6f00
 #define USB_PID_GENPIX_8PSK_COLD                        0x0200
 #define USB_PID_GENPIX_8PSK_WARM                        0x0201
+#define USB_PID_SIGMATEK_DVB_110                        0x6610
 
 
 #endif