1 /* Linux driver for devices based on the DiBcom DiB0700 USB bridge
3 * This program is free software; you can redistribute it and/or modify it
4 * under the terms of the GNU General Public License as published by the Free
5 * Software Foundation, version 2.
7 * Copyright (C) 2005-6 DiBcom, SA
12 int dvb_usb_dib0700_debug;
13 module_param_named(debug,dvb_usb_dib0700_debug, int, 0644);
14 MODULE_PARM_DESC(debug, "set debugging level (1=info,2=fw,4=fwdata,8=data (or-able))." DVB_USB_DEBUG_STATUS);
16 /* expecting rx buffer: request data[0] data[1] ... data[2] */
17 static int dib0700_ctrl_wr(struct dvb_usb_device *d, u8 *tx, u8 txlen)
22 debug_dump(tx,txlen,deb_data);
24 status = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev,0),
25 tx[0], USB_TYPE_VENDOR | USB_DIR_OUT, 0, 0, tx, txlen,
26 USB_CTRL_GET_TIMEOUT);
29 deb_data("ep 0 write error (status = %d, len: %d)\n",status,txlen);
31 return status < 0 ? status : 0;
34 /* expecting tx buffer: request data[0] ... data[n] (n <= 4) */
35 static int dib0700_ctrl_rd(struct dvb_usb_device *d, u8 *tx, u8 txlen, u8 *rx, u8 rxlen)
41 err("tx buffer length is smaller than 2. Makes no sense.");
45 err("tx buffer length is larger than 4. Not supported.");
50 debug_dump(tx,txlen,deb_data);
52 value = ((txlen - 2) << 8) | tx[1];
55 index |= (tx[2] << 8);
59 status = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev,0), tx[0],
60 USB_TYPE_VENDOR | USB_DIR_IN, value, index, rx, rxlen,
61 USB_CTRL_GET_TIMEOUT);
64 deb_info("ep 0 read error (status = %d)\n",status);
67 debug_dump(rx,rxlen,deb_data);
69 return status; /* length in case of success */
72 int dib0700_set_gpio(struct dvb_usb_device *d, enum dib07x0_gpios gpio, u8 gpio_dir, u8 gpio_val)
74 u8 buf[3] = { REQUEST_SET_GPIO, gpio, ((gpio_dir & 0x01) << 7) | ((gpio_val & 0x01) << 6) };
75 return dib0700_ctrl_wr(d,buf,3);
79 * I2C master xfer function
81 static int dib0700_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg *msg,int num)
83 struct dvb_usb_device *d = i2c_get_adapdata(adap);
87 if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
90 for (i = 0; i < num; i++) {
91 /* fill in the address */
92 buf[1] = (msg[i].addr << 1);
94 memcpy(&buf[2], msg[i].buf, msg[i].len);
96 /* write/read request */
97 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
98 buf[0] = REQUEST_I2C_READ;
101 /* special thing in the current firmware: when length is zero the read-failed */
102 if ((len = dib0700_ctrl_rd(d, buf, msg[i].len + 2, msg[i+1].buf, msg[i+1].len)) <= 0) {
103 deb_info("I2C read failed on address %x\n", msg[i].addr);
111 buf[0] = REQUEST_I2C_WRITE;
112 if (dib0700_ctrl_wr(d, buf, msg[i].len + 2) < 0)
117 mutex_unlock(&d->i2c_mutex);
121 static u32 dib0700_i2c_func(struct i2c_adapter *adapter)
126 struct i2c_algorithm dib0700_i2c_algo = {
127 .master_xfer = dib0700_i2c_xfer,
128 .functionality = dib0700_i2c_func,
131 int dib0700_identify_state(struct usb_device *udev, struct dvb_usb_device_properties *props,
132 struct dvb_usb_device_description **desc, int *cold)
135 s16 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev,0),
136 REQUEST_GET_VERSION, USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, b, 16, USB_CTRL_GET_TIMEOUT);
138 deb_info("FW GET_VERSION length: %d\n",ret);
142 deb_info("cold: %d\n", *cold);
146 static int dib0700_set_clock(struct dvb_usb_device *d, u8 en_pll,
147 u8 pll_src, u8 pll_range, u8 clock_gpio3, u16 pll_prediv,
148 u16 pll_loopdiv, u16 free_div, u16 dsuScaler)
151 b[0] = REQUEST_SET_CLOCK;
152 b[1] = (en_pll << 7) | (pll_src << 6) | (pll_range << 5) | (clock_gpio3 << 4);
153 b[2] = (pll_prediv >> 8) & 0xff; // MSB
154 b[3] = pll_prediv & 0xff; // LSB
155 b[4] = (pll_loopdiv >> 8) & 0xff; // MSB
156 b[5] = pll_loopdiv & 0xff; // LSB
157 b[6] = (free_div >> 8) & 0xff; // MSB
158 b[7] = free_div & 0xff; // LSB
159 b[8] = (dsuScaler >> 8) & 0xff; // MSB
160 b[9] = dsuScaler & 0xff; // LSB
162 return dib0700_ctrl_wr(d, b, 10);
165 int dib0700_ctrl_clock(struct dvb_usb_device *d, u32 clk_MHz, u8 clock_out_gp3)
168 case 72: dib0700_set_clock(d, 1, 0, 1, clock_out_gp3, 2, 24, 0, 0x4c); break;
169 default: return -EINVAL;
174 static int dib0700_jumpram(struct usb_device *udev, u32 address)
177 u8 buf[8] = { REQUEST_JUMPRAM, 0, 0, 0,
178 (address >> 24) & 0xff,
179 (address >> 16) & 0xff,
180 (address >> 8) & 0xff,
183 if ((ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, 0x01),buf,8,&actlen,1000)) < 0) {
184 deb_fw("jumpram to 0x%x failed\n",address);
188 deb_fw("jumpram to 0x%x failed\n",address);
194 int dib0700_download_firmware(struct usb_device *udev, const struct firmware *fw)
197 int pos = 0, ret, act_len;
201 while ((ret = dvb_usb_get_hexline(fw, &hx, &pos)) > 0) {
202 deb_fwdata("writing to address 0x%08x (buffer: 0x%02x %02x)\n",hx.addr, hx.len, hx.chk);
205 buf[1] = (hx.addr >> 8) & 0xff;
206 buf[2] = hx.addr & 0xff;
208 memcpy(&buf[4],hx.data,hx.len);
209 buf[4+hx.len] = hx.chk;
211 ret = usb_bulk_msg(udev,
212 usb_sndbulkpipe(udev, 0x01),
219 err("firmware download failed at %d with %d",pos,ret);
225 /* start the firmware */
226 if ((ret = dib0700_jumpram(udev, 0x70000000)) == 0) {
227 info("firmware started successfully.");
236 int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
238 struct dib0700_state *st = adap->dev->priv;
241 b[0] = REQUEST_ENABLE_VIDEO;
243 b[2] = (0x01 << 4); /* Master mode */
246 deb_info("modifying (%d) streaming state for %d\n", onoff, adap->id);
249 st->channel_state |= 1 << adap->id;
251 st->channel_state &= ~(1 << adap->id);
253 b[2] |= st->channel_state;
255 if (st->channel_state) /* if at least one channel is active */
256 b[1] = (0x01 << 4) | 0x00;
258 deb_info("data for streaming: %x %x\n",b[1],b[2]);
260 return dib0700_ctrl_wr(adap->dev, b, 4);
263 static int dib0700_probe(struct usb_interface *intf,
264 const struct usb_device_id *id)
268 for (i = 0; i < dib0700_device_count; i++)
269 if (dvb_usb_device_init(intf, &dib0700_devices[i], THIS_MODULE, NULL) == 0)
275 static struct usb_driver dib0700_driver = {
276 .name = "dvb_usb_dib0700",
277 .probe = dib0700_probe,
278 .disconnect = dvb_usb_device_exit,
279 .id_table = dib0700_usb_id_table,
283 static int __init dib0700_module_init(void)
286 info("loaded with support for %d different device-types", dib0700_device_count);
287 if ((result = usb_register(&dib0700_driver))) {
288 err("usb_register failed. Error number %d",result);
295 static void __exit dib0700_module_exit(void)
297 /* deregister this driver from the USB subsystem */
298 usb_deregister(&dib0700_driver);
301 module_init (dib0700_module_init);
302 module_exit (dib0700_module_exit);
304 MODULE_AUTHOR("Patrick Boettcher <pboettcher@dibcom.fr>");
305 MODULE_DESCRIPTION("Driver for devices based on DiBcom DiB0700 - USB bridge");
306 MODULE_VERSION("1.0");
307 MODULE_LICENSE("GPL");