V4L/DVB (4647): Added module for DiB0700 based devices

Added module for DiB0700 based USB devices. This module is preliminary and
untested (because of a lack of test devices) but should work.
Further commits will be necessary to make it work properly.

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

drivers/media/dvb/dvb-usb/dib0700.h

···
+/* Linux driver for devices based on the DiBcom DiB0700 USB bridge
+ *
+ *	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.
+ *
+ *  Copyright (C) 2005-6 DiBcom, SA
+ */
+#ifndef _DIB0700_H_
+#define _DIB0700_H_
+
+#define DVB_USB_LOG_PREFIX "dib0700"
+#include "dvb-usb.h"
+
+#include "dib07x0.h"
+
+extern int dvb_usb_dib0700_debug;
+#define deb_info(args...)   dprintk(dvb_usb_dib0700_debug,0x01,args)
+#define deb_fw(args...)     dprintk(dvb_usb_dib0700_debug,0x02,args)
+#define deb_fwdata(args...) dprintk(dvb_usb_dib0700_debug,0x04,args)
+#define deb_data(args...)   dprintk(dvb_usb_dib0700_debug,0x08,args)
+
+#define REQUEST_I2C_READ     0x2
+#define REQUEST_I2C_WRITE    0x3
+#define REQUEST_POLL_RC      0x4
+#define REQUEST_JUMPRAM      0x8
+#define REQUEST_SET_GPIO     0xC
+#define REQUEST_ENABLE_VIDEO 0xF
+	// 1 Byte: 4MSB(1 = enable streaming, 0 = disable streaming) 4LSB(Video Mode: 0 = MPEG2 188Bytes, 1 = Analog)
+	// 2 Byte: MPEG2 mode:  4MSB(1 = Master Mode, 0 = Slave Mode) 4LSB(Channel 1 = bit0, Channel 2 = bit1)
+	// 2 Byte: Analog mode: 4MSB(0 = 625 lines, 1 = 525 lines)    4LSB(     "                "           )
+
+struct dib0700_state {
+	u8 channel_state;
+	u8 mt2060_if1[2];
+};
+
+extern int dib0700_set_gpio(struct dvb_usb_device *, enum dib07x0_gpios gpio, u8 gpio_dir, u8 gpio_val);
+extern int dib0700_download_firmware(struct usb_device *udev, const struct firmware *fw);
+extern int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff);
+extern struct i2c_algorithm dib0700_i2c_algo;
+
+extern int dib0700_device_count;
+extern struct dvb_usb_device_properties dib0700_devices[];
+extern struct usb_device_id dib0700_usb_id_table[];
+
+#endif

drivers/media/dvb/dvb-usb/dib0700_core.c

···
+/* Linux driver for devices based on the DiBcom DiB0700 USB bridge
+ *
+ *	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.
+ *
+ *  Copyright (C) 2005-6 DiBcom, SA
+ */
+#include "dib0700.h"
+
+/* debug */
+int dvb_usb_dib0700_debug;
+module_param_named(debug,dvb_usb_dib0700_debug, int, 0644);
+MODULE_PARM_DESC(debug, "set debugging level (1=info,2=fw,4=fwdata,8=data (or-able))." DVB_USB_DEBUG_STATUS);
+
+/* expecting rx buffer: request data[0] data[1] ... data[2] */
+static int dib0700_ctrl_wr(struct dvb_usb_device *d, u8 *tx, u8 txlen)
+{
+	int status;
+
+	deb_data(">>> ");
+	debug_dump(tx,txlen,deb_data);
+
+	status = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev,0),
+		tx[0], USB_TYPE_VENDOR | USB_DIR_OUT, 0, 0, tx, txlen,
+		USB_CTRL_GET_TIMEOUT);
+
+	if (status != txlen)
+		err("ep 0 write error (status = %d, len: %d)",status,txlen);
+
+	return status < 0 ? status : 0;
+}
+
+/* expecting tx buffer: request data[0] ... data[n] (n <= 4) */
+static int dib0700_ctrl_rd(struct dvb_usb_device *d, u8 *tx, u8 txlen, u8 *rx, u8 rxlen)
+{
+	u16 index, value;
+	int status;
+
+	if (txlen < 2) {
+		err("tx buffer length is smaller than 2. Makes no sense.");
+		return -EINVAL;
+	}
+	if (txlen > 4) {
+		err("tx buffer length is larger than 4. Not supported.");
+		return -EINVAL;
+	}
+
+	deb_data(">>> ");
+	debug_dump(tx,txlen,deb_data);
+
+	value = ((txlen - 2) << 8) | tx[1];
+	index = 0;
+	if (txlen > 2)
+		index |= (tx[2] << 8);
+	if (txlen > 3)
+		index |= tx[3];
+
+	/* think about swapping here */
+	value = le16_to_cpu(value);
+	index = le16_to_cpu(index);
+
+	status = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev,0), tx[0],
+			USB_TYPE_VENDOR | USB_DIR_IN, value, index, rx, rxlen,
+			USB_CTRL_GET_TIMEOUT);
+
+	if (status < 0)
+		err("ep 0 read error (status = %d)",status);
+
+	deb_data("<<< ");
+	debug_dump(rx,rxlen,deb_data);
+
+	return status; /* length in case of success */
+}
+
+int dib0700_set_gpio(struct dvb_usb_device *d, enum dib07x0_gpios gpio, u8 gpio_dir, u8 gpio_val)
+{
+	u8 buf[3] = { REQUEST_SET_GPIO, gpio, ((gpio_dir & 0x01) << 7) | ((gpio_val & 0x01) << 6) };
+	return dib0700_ctrl_wr(d,buf,3);
+}
+
+/*
+ * I2C master xfer function
+ */
+static int dib0700_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg *msg,int num)
+{
+	struct dvb_usb_device *d = i2c_get_adapdata(adap);
+	int i,len;
+	u8 buf[255];
+
+	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+		return -EAGAIN;
+
+	for (i = 0; i < num; i++) {
+		/* fill in the address */
+		buf[1] = (msg[i].addr << 1);
+		/* fill the buffer */
+		memcpy(&buf[2], msg[i].buf, msg[i].len);
+
+		/* write/read request */
+		if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
+			buf[0] = REQUEST_I2C_READ;
+			buf[1] |= 1;
+
+			/* special thing in the current firmware: when length is zero the read-failed */
+			if ((len = dib0700_ctrl_rd(d, buf, msg[i].len + 2, msg[i+1].buf, msg[i+1].len)) <= 0)
+				break;
+
+			msg[i+1].len = len;
+
+			i++;
+		} else {
+			buf[0] = REQUEST_I2C_WRITE;
+			if (dib0700_ctrl_wr(d, buf, msg[i].len + 2) < 0)
+				break;
+		}
+	}
+
+	mutex_unlock(&d->i2c_mutex);
+	return i;
+}
+
+static u32 dib0700_i2c_func(struct i2c_adapter *adapter)
+{
+	return I2C_FUNC_I2C;
+}
+
+struct i2c_algorithm dib0700_i2c_algo = {
+	.master_xfer   = dib0700_i2c_xfer,
+	.functionality = dib0700_i2c_func,
+};
+
+static int dib0700_jumpram(struct usb_device *udev, u32 address)
+{
+	int ret, actlen;
+	u8 buf[8] = { REQUEST_JUMPRAM, 0, 0, 0,
+		(address >> 24) & 0xff,
+		(address >> 16) & 0xff,
+		(address >> 8)  & 0xff,
+		 address        & 0xff };
+
+	if ((ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, 0x01),buf,8,&actlen,1000)) < 0) {
+		deb_fw("jumpram to 0x%x failed\n",address);
+		return ret;
+	}
+	if (actlen != 8) {
+		deb_fw("jumpram to 0x%x failed\n",address);
+		return -EIO;
+	}
+	return 0;
+}
+
+int dib0700_download_firmware(struct usb_device *udev, const struct firmware *fw)
+{
+	struct hexline hx;
+	int pos = 0, ret, act_len;
+
+	u8 buf[260];
+
+	while ((ret = dvb_usb_get_hexline(fw, &hx, &pos)) > 0) {
+		deb_fwdata("writing to address 0x%04x (buffer: 0x%02x %02x)\n",hx.addr, hx.len, hx.chk);
+
+		buf[0] = hx.len;
+		buf[1] = hx.addr >> 8;
+		buf[2] = hx.addr & 0xff;
+		buf[3] = hx.type;
+		memcpy(&buf[4],hx.data,hx.len);
+		buf[4+hx.len] = hx.chk;
+
+		ret = usb_bulk_msg(udev,
+			usb_sndbulkpipe(udev, 0x01),
+			buf,
+			hx.len + 5,
+			&act_len,
+			1000);
+
+		if (ret < 0) {
+			err("firmware download failed at %d with %d",pos,ret);
+			return ret;
+		}
+	}
+
+	if (ret == 0) {
+		/* start the firmware */
+		if ((ret = dib0700_jumpram(udev,0x70000000)) == 0)
+			info("firmware started successfully.");
+	} else
+		ret = -EIO;
+
+	return ret;
+}
+
+int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
+{
+	struct dib0700_state *st = adap->dev->priv;
+	u8 b[4];
+
+	b[0] = REQUEST_ENABLE_VIDEO;
+	b[1] = 0x00;
+	b[2] = (0x01 << 4); /* Master mode */
+	b[3] = 0x00;
+
+	deb_info("modifying (%d) streaming state for %d\n", onoff, adap->id);
+
+	if (onoff)
+		st->channel_state |=   1 << adap->id;
+	else
+		st->channel_state &= ~(1 << adap->id);
+
+	b[2] |= st->channel_state;
+
+	if (st->channel_state) /* if at least one channel is active */
+		b[1] = (0x01 << 4) | 0x00;
+
+	deb_info("data for streaming: %x %x\n",b[1],b[2]);
+
+	return dib0700_ctrl_wr(adap->dev, b, 4);
+}
+
+static int dib0700_probe(struct usb_interface *intf,
+		const struct usb_device_id *id)
+{
+	int i;
+
+	for (i = 0; i < dib0700_device_count; i++)
+		if (dvb_usb_device_init(intf, &dib0700_devices[i], THIS_MODULE, NULL) == 0)
+			return 0;
+
+	return -ENODEV;
+}
+
+static struct usb_driver dib0700_driver = {
+	.name       = "dvb_usb_dib0700",
+	.probe      = dib0700_probe,
+	.disconnect = dvb_usb_device_exit,
+	.id_table   = dib0700_usb_id_table,
+};
+
+/* module stuff */
+static int __init dib0700_module_init(void)
+{
+	int result;
+	info("loaded with support for %d different device-types", dib0700_device_count);
+	if ((result = usb_register(&dib0700_driver))) {
+		err("usb_register failed. Error number %d",result);
+		return result;
+	}
+
+	return 0;
+}
+
+static void __exit dib0700_module_exit(void)
+{
+	/* deregister this driver from the USB subsystem */
+	usb_deregister(&dib0700_driver);
+}
+
+module_init (dib0700_module_init);
+module_exit (dib0700_module_exit);
+
+MODULE_AUTHOR("Patrick Boettcher <[e-mail]>");
+MODULE_DESCRIPTION("Driver for devices based on DiBcom DiB0700 - USB bridge");
+MODULE_VERSION("1.0");
+MODULE_LICENSE("GPL");

drivers/media/dvb/dvb-usb/dib0700_devices.c

···
+/* Linux driver for devices based on the DiBcom DiB0700 USB bridge
+ *
+ *	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.
+ *
+ *  Copyright (C) 2005-6 DiBcom, SA
+ */
+#include "dib0700.h"
+
+#include "dib3000mc.h"
+#include "dib7000m.h"
+#include "mt2060.h"
+
+/* Hauppauge Nova-T 500
+ *  has a LNA on GPIO0 which is enabled by setting 1 */
+static struct mt2060_config bristol_mt2060_config[2] = {
+	{
+		.i2c_address = 0x60,
+		.clock_out   = 1,
+	}, {
+		.i2c_address = 0x61,
+	}
+};
+
+static struct dibx000_agc_config bristol_dib3000p_mt2060_agc_config = {
+	.band_caps = BAND_VHF | BAND_UHF,
+	.setup     = (0 << 15) | (0 << 14) | (1 << 13) | (1 << 12) | (29 << 0),
+
+	.agc1_max = 48497,
+	.agc1_min = 23593,
+	.agc2_max = 46531,
+	.agc2_min = 24904,
+
+	.agc1_pt1 = 0x65,
+	.agc1_pt2 = 0x69,
+
+	.agc1_slope1 = 0x51,
+	.agc1_slope2 = 0x27,
+
+	.agc2_pt1 = 0,
+	.agc2_pt2 = 0x33,
+
+	.agc2_slope1 = 0x35,
+	.agc2_slope2 = 0x37,
+};
+
+static struct dib3000mc_config bristol_dib3000mc_config[2] = {
+	{	.agc          = &bristol_dib3000p_mt2060_agc_config,
+		.max_time     = 0x196,
+		.ln_adc_level = 0x1cc7,
+		.output_mpeg2_in_188_bytes = 1,
+	},
+	{	.agc          = &bristol_dib3000p_mt2060_agc_config,
+		.max_time     = 0x196,
+		.ln_adc_level = 0x1cc7,
+		.output_mpeg2_in_188_bytes = 1,
+	}
+};
+
+static int bristol_frontend_attach(struct dvb_usb_adapter *adap)
+{
+	if (adap->id == 0) {
+		dib0700_set_gpio(adap->dev, GPIO6,  GPIO_OUT, 0); msleep(10);
+		dib0700_set_gpio(adap->dev, GPIO6,  GPIO_OUT, 1); msleep(10);
+		dib0700_set_gpio(adap->dev, GPIO10, GPIO_OUT, 0); msleep(10);
+		dib0700_set_gpio(adap->dev, GPIO10, GPIO_OUT, 1); msleep(10);
+
+		if (dib3000mc_i2c_enumeration(&adap->dev->i2c_adap, 2, DEFAULT_DIB3000P_I2C_ADDRESS, bristol_dib3000mc_config) != 0) {
+			dib0700_set_gpio(adap->dev, GPIO6, GPIO_OUT, 0); msleep(10);
+			return -ENODEV;
+		}
+	}
+	return (adap->fe = dvb_attach(dib3000mc_attach, &adap->dev->i2c_adap, 10 + adap->id, &bristol_dib3000mc_config[adap->id])) == NULL ? -ENODEV : 0;
+}
+
+static int bristol_tuner_attach(struct dvb_usb_adapter *adap)
+{
+	struct dib0700_state *st = adap->dev->priv;
+	struct i2c_adapter *tun_i2c = dib3000mc_get_tuner_i2c_master(adap->fe, 1);
+	return mt2060_attach(adap->fe, tun_i2c, &bristol_mt2060_config[adap->id], st->mt2060_if1[adap->id]);
+}
+
+/* STK7700P: Hauppauge Nova-T Stick, AVerMedia Volar */
+static struct mt2060_config stk7000p_mt2060_config = {
+	0x60
+};
+
+static int stk7700p_frontend_attach(struct dvb_usb_adapter *adap)
+{
+	/* unless there is no real power management in DVB - we leave the device on GPIO6 */
+	dib0700_set_gpio(adap->dev, GPIO6, GPIO_OUT, 0); msleep(10);
+	dib0700_set_gpio(adap->dev, GPIO6, GPIO_OUT, 1); msleep(10);
+	dib0700_set_gpio(adap->dev, GPIO10, GPIO_OUT, 1); msleep(10);
+	dib0700_set_gpio(adap->dev, GPIO10, GPIO_OUT, 0); msleep(10);
+
+//	adap->fe = dib7000m_attach(&adap->dev->i2c_adap, &stk7700p_dib7000m_config, 18);
+	return 0;
+}
+
+static int stk7700p_tuner_attach(struct dvb_usb_adapter *adap)
+{
+//	tun_i2c = dib7000m_get_tuner_i2c_master(adap->fe, 1);
+//	return mt2060_attach(adap->fe, tun_i2c, &stk3000p_mt2060_config, if1);
+	return 0;
+}
+
+struct usb_device_id dib0700_usb_id_table[] = {
+		{ USB_DEVICE(USB_VID_DIBCOM,    USB_PID_DIBCOM_STK7700P) },
+		{ USB_DEVICE(USB_VID_HAUPPAUGE, USB_PID_HAUPPAUGE_NOVA_T_500) },
+		{ USB_DEVICE(USB_VID_HAUPPAUGE, USB_PID_HAUPPAUGE_NOVA_T_STICK) },
+		{ USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_VOLAR) },
+		{ }		/* Terminating entry */
+};
+MODULE_DEVICE_TABLE(usb, dib0700_usb_id_table);
+
+#define DIB0700_DEFAULT_DEVICE_PROPERTIES \
+	.caps              = DVB_USB_IS_AN_I2C_ADAPTER, \
+	.usb_ctrl          = DEVICE_SPECIFIC, \
+	.firmware          = "dvb-usb-dib0700-01.fw", \
+	.download_firmware = dib0700_download_firmware, \
+	.size_of_priv      = sizeof(struct dib0700_state), \
+	.i2c_algo          = &dib0700_i2c_algo
+
+#define DIB0700_DEFAULT_STREAMING_CONFIG(ep) \
+	.streaming_ctrl   = dib0700_streaming_ctrl, \
+	.stream = { \
+		.type = USB_BULK, \
+		.count = 4, \
+		.endpoint = ep, \
+		.u = { \
+			.bulk = { \
+				.buffersize = 39480, \
+			} \
+		} \
+	}
+
+struct dvb_usb_device_properties dib0700_devices[] = {
+	{
+		DIB0700_DEFAULT_DEVICE_PROPERTIES,
+
+		.num_adapters = 1,
+		.adapter = {
+			{
+				.frontend_attach  = stk7700p_frontend_attach,
+				.tuner_attach     = stk7700p_tuner_attach,
+
+				DIB0700_DEFAULT_STREAMING_CONFIG(0x02),
+			},
+		},
+
+		.num_device_descs = 3,
+		.devices = {
+			{   "DiBcom STK7700P reference design",
+				{ &dib0700_usb_id_table[0], NULL },
+				{ NULL },
+			},
+			{   "Hauppauge Nova-T Stick",
+				{ &dib0700_usb_id_table[2], NULL },
+				{ NULL },
+			},
+			{   "AVerMedia AVerTV DVB-T Volar",
+				{ &dib0700_usb_id_table[3], NULL },
+				{ NULL },
+			},
+		}
+	}, { DIB0700_DEFAULT_DEVICE_PROPERTIES,
+
+		.num_adapters = 2,
+		.adapter = {
+			{
+				.frontend_attach  = bristol_frontend_attach,
+				.tuner_attach     = bristol_tuner_attach,
+
+				DIB0700_DEFAULT_STREAMING_CONFIG(0x02),
+			}, {
+				.frontend_attach  = bristol_frontend_attach,
+				.tuner_attach     = bristol_tuner_attach,
+
+				DIB0700_DEFAULT_STREAMING_CONFIG(0x03),
+			}
+		},
+
+		.num_device_descs = 1,
+		.devices = {
+			{   "Hauppauge Nova-T 500 Dual DVB-T",
+				{ &dib0700_usb_id_table[1], NULL },
+				{ NULL },
+			},
+		}
+	}
+};
+
+int dib0700_device_count = ARRAY_SIZE(dib0700_devices);

drivers/media/dvb/dvb-usb/dib07x0.h

···
+#ifndef _DIB07X0_H_
+#define _DIB07X0_H_
+
+enum dib07x0_gpios {
+	GPIO0  =  0,
+	GPIO1  =  2,
+	GPIO2  =  3,
+	GPIO3  =  4,
+	GPIO4  =  5,
+	GPIO5  =  6,
+	GPIO6  =  8,
+	GPIO7  = 10,
+	GPIO8  = 11,
+	GPIO9  = 14,
+	GPIO10 = 15,
+};
+
+#define GPIO_IN  0
+#define GPIO_OUT 1
+
+#endif