V4L/DVB (4863): Adding support for Pinnacle PCTV 400e DVB-S

Adding support for Pinnacle PCTV 400e DVB-S. The module name is called ttusb2,
because it this device (and other Pinnacle devices) is using the USB-protocol
originally used by Technotrend device. I'm suspecting Technotrend as the
device-designer.

Signed-off-by: Patrick Boettcher <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/dvb/dvb-usb/Kconfig

···
 	help
 	  Say Y here to support the Hauppauge WinTV-NOVA-T usb2 DVB-T USB2.0 receiver.
 
+config DVB_USB_TTUSB2
+	tristate "Pinnacle 400e DVB-S USB2.0 support"
+	depends on DVB_USB
+	select DVB_TDA10086 if !DVB_FE_CUSTOMISE
+	select DVB_LNBP21 if !DVB_FE_CUSTOMISE
+	select DVB_TDA826X if !DVB_FE_CUSTOMISE
+	help
+	  Say Y here to support the Pinnacle 400e DVB-S USB2.0 receiver. The
+	  firmware protocol used by this module is similar to the one used by the
+	  old ttusb-driver - that's why the module is called dvb-usb-ttusb2.ko.
+
 config DVB_USB_DTT200U
 	tristate "WideView WT-200U and WT-220U (pen) DVB-T USB2.0 support (Yakumo/Hama/Typhoon/Yuan)"
 	depends on DVB_USB

drivers/media/dvb/dvb-usb/Makefile

···
 dvb-usb-cxusb-objs = cxusb.o
 obj-$(CONFIG_DVB_USB_CXUSB) += dvb-usb-cxusb.o
 
+dvb-usb-ttusb2-objs = ttusb2.o
+obj-$(CONFIG_DVB_USB_TTUSB2) += dvb-usb-ttusb2.o
+
 dvb-usb-dib0700-objs = dib0700_core.o dib0700_devices.o
 obj-$(CONFIG_DVB_USB_DIB0700) += dvb-usb-dib0700.o
 

drivers/media/dvb/dvb-usb/ttusb2.c

···
+/* DVB USB compliant linux driver for Technotrend DVB USB boxes and clones
+ * (e.g. Pinnacle 400e DVB-S USB2.0).
+ *
+ * The Pinnacle 400e uses the same protocol as the Technotrend USB1.1 boxes.
+ *
+ * TDA8263 + TDA10086
+ *
+ * I2C addresses:
+ * 0x08 - LNBP21PD   - LNB power supply
+ * 0x0e - TDA10086   - Demodulator
+ * 0x50 - FX2 eeprom
+ * 0x60 - TDA8263    - Tuner
+ * 0x78 ???
+ *
+ * Copyright (c) 2002 Holger Waechtler <[e-mail]>
+ * Copyright (c) 2003 Felix Domke <[e-mail]>
+ * Copyright (C) 2005-6 Patrick Boettcher <[e-mail]>
+ *
+ *	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
+ */
+#define DVB_USB_LOG_PREFIX "ttusb2"
+#include "dvb-usb.h"
+
+#include "ttusb2.h"
+
+#include "tda826x.h"
+#include "tda10086.h"
+#include "lnbp21.h"
+
+/* debug */
+static int dvb_usb_ttusb2_debug;
+#define deb_info(args...)   dprintk(dvb_usb_ttusb2_debug,0x01,args)
+module_param_named(debug,dvb_usb_ttusb2_debug, int, 0644);
+MODULE_PARM_DESC(debug, "set debugging level (1=info (or-able))." DVB_USB_DEBUG_STATUS);
+
+struct ttusb2_state {
+	u8 id;
+};
+
+static int ttusb2_msg(struct dvb_usb_device *d, u8 cmd,
+		u8 *wbuf, int wlen, u8 *rbuf, int rlen)
+{
+	struct ttusb2_state *st = d->priv;
+	u8 s[wlen+4],r[64] = { 0 };
+	int ret = 0;
+
+	memset(s,0,wlen+4);
+
+	s[0] = 0xaa;
+	s[1] = ++st->id;
+	s[2] = cmd;
+	s[3] = wlen;
+	memcpy(&s[4],wbuf,wlen);
+
+	ret = dvb_usb_generic_rw(d, s, wlen+4, r, 64, 0);
+
+	if (ret  != 0 ||
+		r[0] != 0x55 ||
+		r[1] != s[1] ||
+		r[2] != cmd ||
+		(rlen > 0 && r[3] != rlen)) {
+		warn("there might have been an error during control message transfer. (rlen = %d, was %d)",rlen,r[3]);
+		return -EIO;
+	}
+
+	if (rlen > 0)
+		memcpy(rbuf, &r[4], rlen);
+
+	return 0;
+}
+
+static int ttusb2_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)
+{
+	struct dvb_usb_device *d = i2c_get_adapdata(adap);
+	static u8 obuf[60], ibuf[60];
+	int i,read;
+
+	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+		return -EAGAIN;
+
+	if (num > 2)
+		warn("more than 2 i2c messages at a time is not handled yet. TODO.");
+
+	for (i = 0; i < num; i++) {
+		read = i+1 < num && (msg[i+1].flags & I2C_M_RD);
+
+		obuf[0] = (msg[i].addr << 1) | read;
+		obuf[1] = msg[i].len;
+
+		/* read request */
+		if (read)
+			obuf[2] = msg[i+1].len;
+		else
+			obuf[2] = 0;
+
+		memcpy(&obuf[3],msg[i].buf,msg[i].len);
+
+		if (ttusb2_msg(d, CMD_I2C_XFER, obuf, msg[i].len+3, ibuf, obuf[2] + 3) < 0) {
+			err("i2c transfer failed.");
+			break;
+		}
+
+		if (read) {
+			memcpy(msg[i+1].buf,&ibuf[3],msg[i+1].len);
+			i++;
+		}
+	}
+
+	mutex_unlock(&d->i2c_mutex);
+	return i;
+}
+
+static u32 ttusb2_i2c_func(struct i2c_adapter *adapter)
+{
+	return I2C_FUNC_I2C;
+}
+
+static struct i2c_algorithm ttusb2_i2c_algo = {
+	.master_xfer   = ttusb2_i2c_xfer,
+	.functionality = ttusb2_i2c_func,
+};
+
+/* Callbacks for DVB USB */
+static int ttusb2_identify_state (struct usb_device *udev, struct
+		dvb_usb_device_properties *props, struct dvb_usb_device_description **desc,
+		int *cold)
+{
+	*cold = udev->descriptor.iManufacturer == 0 && udev->descriptor.iProduct == 0;
+	return 0;
+}
+
+static int ttusb2_power_ctrl(struct dvb_usb_device *d, int onoff)
+{
+	u8 b = onoff;
+	ttusb2_msg(d, CMD_POWER, &b, 0, NULL, 0);
+	return ttusb2_msg(d, CMD_POWER, &b, 1, NULL, 0);
+}
+
+
+static struct tda10086_config tda10086_config = {
+	.demod_address = 0x0e,
+	.invert = 0,
+};
+
+static int ttusb2_frontend_attach(struct dvb_usb_adapter *adap)
+{
+	if (usb_set_interface(adap->dev->udev,0,3) < 0)
+		err("set interface to alts=3 failed");
+
+	if ((adap->fe = dvb_attach(tda10086_attach, &tda10086_config, &adap->dev->i2c_adap)) == NULL) {
+		deb_info("TDA10086 attach failed\n");
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int ttusb2_tuner_attach(struct dvb_usb_adapter *adap)
+{
+	if (dvb_attach(tda826x_attach, adap->fe, 0x60, &adap->dev->i2c_adap, 0) == NULL) {
+		deb_info("TDA8263 attach failed\n");
+		return -ENODEV;
+	}
+
+	if (dvb_attach(lnbp21_attach, adap->fe, &adap->dev->i2c_adap, 0, 0) == NULL) {
+		deb_info("LNBP21 attach failed\n");
+		return -ENODEV;
+	}
+	return 0;
+}
+
+/* DVB USB Driver stuff */
+static struct dvb_usb_device_properties ttusb2_properties;
+
+static int ttusb2_probe(struct usb_interface *intf,
+		const struct usb_device_id *id)
+{
+	return dvb_usb_device_init(intf,&ttusb2_properties,THIS_MODULE,NULL);
+}
+
+static struct usb_device_id ttusb2_table [] = {
+		{ USB_DEVICE(USB_VID_PINNACLE, USB_PID_PCTV_400E) },
+		{}		/* Terminating entry */
+};
+MODULE_DEVICE_TABLE (usb, ttusb2_table);
+
+static struct dvb_usb_device_properties ttusb2_properties = {
+	.caps = DVB_USB_IS_AN_I2C_ADAPTER,
+
+	.usb_ctrl = CYPRESS_FX2,
+	.firmware = "dvb-usb-pctv-400e-01.fw",
+
+	.size_of_priv = sizeof(struct ttusb2_state),
+
+	.num_adapters = 1,
+	.adapter = {
+		{
+			.streaming_ctrl   = NULL, // ttusb2_streaming_ctrl,
+
+			.frontend_attach  = ttusb2_frontend_attach,
+			.tuner_attach     = ttusb2_tuner_attach,
+
+			/* parameter for the MPEG2-data transfer */
+			.stream = {
+				.type = USB_ISOC,
+				.count = 5,
+				.endpoint = 0x02,
+				.u = {
+					.isoc = {
+						.framesperurb = 4,
+						.framesize = 940,
+						.interval = 1,
+					}
+				}
+			}
+		}
+	},
+
+	.power_ctrl       = ttusb2_power_ctrl,
+	.identify_state   = ttusb2_identify_state,
+
+	.i2c_algo         = &ttusb2_i2c_algo,
+
+	.generic_bulk_ctrl_endpoint = 0x01,
+
+	.num_device_descs = 1,
+	.devices = {
+		{   "Pinnacle 400e DVB-S USB2.0",
+			{ &ttusb2_table[0], NULL },
+			{ NULL },
+		},
+	}
+};
+
+static struct usb_driver ttusb2_driver = {
+	.name		= "dvb_usb_ttusb2",
+	.probe		= ttusb2_probe,
+	.disconnect = dvb_usb_device_exit,
+	.id_table	= ttusb2_table,
+};
+
+/* module stuff */
+static int __init ttusb2_module_init(void)
+{
+	int result;
+	if ((result = usb_register(&ttusb2_driver))) {
+		err("usb_register failed. Error number %d",result);
+		return result;
+	}
+
+	return 0;
+}
+
+static void __exit ttusb2_module_exit(void)
+{
+	/* deregister this driver from the USB subsystem */
+	usb_deregister(&ttusb2_driver);
+}
+
+module_init (ttusb2_module_init);
+module_exit (ttusb2_module_exit);
+
+MODULE_AUTHOR("Patrick Boettcher <[e-mail]>");
+MODULE_DESCRIPTION("Driver for Pinnacle PCTV 400e DVB-S USB2.0");
+MODULE_VERSION("1.0");
+MODULE_LICENSE("GPL");

drivers/media/dvb/dvb-usb/ttusb2.h

···
+/* DVB USB compliant linux driver for Technotrend DVB USB boxes and clones
+ * (e.g. Pinnacle 400e DVB-S USB2.0).
+ *
+ * Copyright (c) 2002 Holger Waechtler <[e-mail]>
+ * Copyright (c) 2003 Felix Domke <[e-mail]>
+ * Copyright (C) 2005-6 Patrick Boettcher <[e-mail]>
+ *
+ *	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
+ */
+#ifndef _DVB_USB_TTUSB2_H_
+#define _DVB_USB_TTUSB2_H_
+
+/* TTUSB protocol
+ *
+ * always to messages (out/in)
+ * out message:
+ * 0xaa <id> <cmdbyte> <datalen> <data...>
+ *
+ * in message (complete block is always 0x40 bytes long)
+ * 0x55 <id> <cmdbyte> <datalen> <data...>
+ *
+ * id is incremented for each transaction
+ */
+
+#define CMD_DSP_DOWNLOAD    0x13
+/* out data: <byte>[28]
+ * last block must be empty */
+
+#define CMD_DSP_BOOT        0x14
+/* out data: nothing */
+
+#define CMD_POWER           0x15
+/* out data: <on=1/off=0> */
+
+#define CMD_LNB             0x16
+/* out data: <power=1> <18V=0,13V=1> <tone> <??=1> <??=1> */
+
+#define CMD_GET_VERSION     0x17
+/* in  data: <version_byte>[5] */
+
+#define CMD_DISEQC          0x18
+/* out data: <master=0xff/burst=??> <cmdlen> <cmdbytes>[cmdlen] */
+
+#define CMD_PID_ENABLE      0x22
+/* out data: <index> <type: ts=1/sec=2> <pid msb> <pid lsb> */
+
+#define CMD_PID_DISABLE     0x23
+/* out data: <index> */
+
+#define CMD_FILTER_ENABLE   0x24
+/* out data: <index> <pid_idx> <filter>[12] <mask>[12] */
+
+#define CMD_FILTER_DISABLE  0x25
+/* out data: <index> */
+
+#define CMD_GET_DSP_VERSION 0x26
+/* in  data: <version_byte>[28] */
+
+#define CMD_I2C_XFER        0x31
+/* out data: <addr << 1> <sndlen> <rcvlen> <data>[sndlen]
+ * in  data: <addr << 1> <sndlen> <rcvlen> <data>[rcvlen] */
+
+#define CMD_I2C_BITRATE     0x32
+/* out data: <default=0> */
+
+#endif