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 int dvb_usb_dib0700_ir_proto = 1;
17 module_param(dvb_usb_dib0700_ir_proto, int, 0644);
18 MODULE_PARM_DESC(dvb_usb_dib0700_ir_proto, "set ir protocol (0=NEC, 1=RC5 (default), 2=RC6).");
20 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
22 /* expecting rx buffer: request data[0] data[1] ... data[2] */
23 static int dib0700_ctrl_wr(struct dvb_usb_device *d, u8 *tx, u8 txlen)
28 debug_dump(tx,txlen,deb_data);
30 status = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev,0),
31 tx[0], USB_TYPE_VENDOR | USB_DIR_OUT, 0, 0, tx, txlen,
32 USB_CTRL_GET_TIMEOUT);
35 deb_data("ep 0 write error (status = %d, len: %d)\n",status,txlen);
37 return status < 0 ? status : 0;
40 /* expecting tx buffer: request data[0] ... data[n] (n <= 4) */
41 int dib0700_ctrl_rd(struct dvb_usb_device *d, u8 *tx, u8 txlen, u8 *rx, u8 rxlen)
47 err("tx buffer length is smaller than 2. Makes no sense.");
51 err("tx buffer length is larger than 4. Not supported.");
56 debug_dump(tx,txlen,deb_data);
58 value = ((txlen - 2) << 8) | tx[1];
61 index |= (tx[2] << 8);
65 status = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev,0), tx[0],
66 USB_TYPE_VENDOR | USB_DIR_IN, value, index, rx, rxlen,
67 USB_CTRL_GET_TIMEOUT);
70 deb_info("ep 0 read error (status = %d)\n",status);
73 debug_dump(rx,rxlen,deb_data);
75 return status; /* length in case of success */
78 int dib0700_set_gpio(struct dvb_usb_device *d, enum dib07x0_gpios gpio, u8 gpio_dir, u8 gpio_val)
80 u8 buf[3] = { REQUEST_SET_GPIO, gpio, ((gpio_dir & 0x01) << 7) | ((gpio_val & 0x01) << 6) };
81 return dib0700_ctrl_wr(d,buf,3);
85 * I2C master xfer function (supported in 1.20 firmware)
87 static int dib0700_i2c_xfer_new(struct i2c_adapter *adap, struct i2c_msg *msg,
90 /* The new i2c firmware messages are more reliable and in particular
91 properly support i2c read calls not preceded by a write */
93 struct dvb_usb_device *d = i2c_get_adapdata(adap);
94 uint8_t bus_mode = 1; /* 0=eeprom bus, 1=frontend bus */
95 uint8_t gen_mode = 0; /* 0=master i2c, 1=gpio i2c */
98 uint8_t buf[255]; /* TBV: malloc ? */
101 /* Ensure nobody else hits the i2c bus while we're sending our
102 sequence of messages, (such as the remote control thread) */
103 if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
106 for (i = 0; i < num; i++) {
108 /* First message in the transaction */
110 } else if (!(msg[i].flags & I2C_M_NOSTART)) {
111 /* Device supports repeated-start */
114 /* Not the first packet and device doesn't support
118 if (i == (num - 1)) {
119 /* Last message in the transaction */
123 if (msg[i].flags & I2C_M_RD) {
128 i2c_dest = (msg[i].addr << 1);
129 value = ((en_start << 7) | (en_stop << 6) |
130 (msg[i].len & 0x3F)) << 8 | i2c_dest;
131 /* I2C ctrl + FE bus; */
132 index = ((gen_mode<<6)&0xC0) | ((bus_mode<<4)&0x30);
134 result = usb_control_msg(d->udev,
135 usb_rcvctrlpipe(d->udev, 0),
136 REQUEST_NEW_I2C_READ,
137 USB_TYPE_VENDOR | USB_DIR_IN,
138 value, index, msg[i].buf,
140 USB_CTRL_GET_TIMEOUT);
142 err("i2c read error (status = %d)\n", result);
147 buf[0] = REQUEST_NEW_I2C_WRITE;
148 buf[1] = (msg[i].addr << 1);
149 buf[2] = (en_start << 7) | (en_stop << 6) |
151 /* I2C ctrl + FE bus; */
152 buf[3] = ((gen_mode<<6)&0xC0) | ((bus_mode<<4)&0x30);
153 /* The Actual i2c payload */
154 memcpy(&buf[4], msg[i].buf, msg[i].len);
156 result = usb_control_msg(d->udev,
157 usb_sndctrlpipe(d->udev, 0),
158 REQUEST_NEW_I2C_WRITE,
159 USB_TYPE_VENDOR | USB_DIR_OUT,
160 0, 0, buf, msg[i].len + 4,
161 USB_CTRL_GET_TIMEOUT);
163 err("i2c write error (status = %d)\n", result);
168 mutex_unlock(&d->i2c_mutex);
173 * I2C master xfer function (pre-1.20 firmware)
175 static int dib0700_i2c_xfer_legacy(struct i2c_adapter *adap,
176 struct i2c_msg *msg, int num)
178 struct dvb_usb_device *d = i2c_get_adapdata(adap);
182 if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
185 for (i = 0; i < num; i++) {
186 /* fill in the address */
187 buf[1] = (msg[i].addr << 1);
188 /* fill the buffer */
189 memcpy(&buf[2], msg[i].buf, msg[i].len);
191 /* write/read request */
192 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
193 buf[0] = REQUEST_I2C_READ;
196 /* special thing in the current firmware: when length is zero the read-failed */
197 if ((len = dib0700_ctrl_rd(d, buf, msg[i].len + 2, msg[i+1].buf, msg[i+1].len)) <= 0) {
198 deb_info("I2C read failed on address %x\n", msg[i].addr);
206 buf[0] = REQUEST_I2C_WRITE;
207 if (dib0700_ctrl_wr(d, buf, msg[i].len + 2) < 0)
212 mutex_unlock(&d->i2c_mutex);
216 static int dib0700_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msg,
219 struct dvb_usb_device *d = i2c_get_adapdata(adap);
220 struct dib0700_state *st = d->priv;
222 if (st->fw_use_new_i2c_api == 1) {
223 /* User running at least fw 1.20 */
224 return dib0700_i2c_xfer_new(adap, msg, num);
226 /* Use legacy calls */
227 return dib0700_i2c_xfer_legacy(adap, msg, num);
231 static u32 dib0700_i2c_func(struct i2c_adapter *adapter)
236 struct i2c_algorithm dib0700_i2c_algo = {
237 .master_xfer = dib0700_i2c_xfer,
238 .functionality = dib0700_i2c_func,
241 int dib0700_identify_state(struct usb_device *udev, struct dvb_usb_device_properties *props,
242 struct dvb_usb_device_description **desc, int *cold)
245 s16 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev,0),
246 REQUEST_GET_VERSION, USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, b, 16, USB_CTRL_GET_TIMEOUT);
248 deb_info("FW GET_VERSION length: %d\n",ret);
252 deb_info("cold: %d\n", *cold);
256 static int dib0700_set_clock(struct dvb_usb_device *d, u8 en_pll,
257 u8 pll_src, u8 pll_range, u8 clock_gpio3, u16 pll_prediv,
258 u16 pll_loopdiv, u16 free_div, u16 dsuScaler)
261 b[0] = REQUEST_SET_CLOCK;
262 b[1] = (en_pll << 7) | (pll_src << 6) | (pll_range << 5) | (clock_gpio3 << 4);
263 b[2] = (pll_prediv >> 8) & 0xff; // MSB
264 b[3] = pll_prediv & 0xff; // LSB
265 b[4] = (pll_loopdiv >> 8) & 0xff; // MSB
266 b[5] = pll_loopdiv & 0xff; // LSB
267 b[6] = (free_div >> 8) & 0xff; // MSB
268 b[7] = free_div & 0xff; // LSB
269 b[8] = (dsuScaler >> 8) & 0xff; // MSB
270 b[9] = dsuScaler & 0xff; // LSB
272 return dib0700_ctrl_wr(d, b, 10);
275 int dib0700_ctrl_clock(struct dvb_usb_device *d, u32 clk_MHz, u8 clock_out_gp3)
278 case 72: dib0700_set_clock(d, 1, 0, 1, clock_out_gp3, 2, 24, 0, 0x4c); break;
279 default: return -EINVAL;
284 static int dib0700_jumpram(struct usb_device *udev, u32 address)
287 u8 buf[8] = { REQUEST_JUMPRAM, 0, 0, 0,
288 (address >> 24) & 0xff,
289 (address >> 16) & 0xff,
290 (address >> 8) & 0xff,
293 if ((ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, 0x01),buf,8,&actlen,1000)) < 0) {
294 deb_fw("jumpram to 0x%x failed\n",address);
298 deb_fw("jumpram to 0x%x failed\n",address);
304 int dib0700_download_firmware(struct usb_device *udev, const struct firmware *fw)
307 int pos = 0, ret, act_len;
311 while ((ret = dvb_usb_get_hexline(fw, &hx, &pos)) > 0) {
312 deb_fwdata("writing to address 0x%08x (buffer: 0x%02x %02x)\n",hx.addr, hx.len, hx.chk);
315 buf[1] = (hx.addr >> 8) & 0xff;
316 buf[2] = hx.addr & 0xff;
318 memcpy(&buf[4],hx.data,hx.len);
319 buf[4+hx.len] = hx.chk;
321 ret = usb_bulk_msg(udev,
322 usb_sndbulkpipe(udev, 0x01),
329 err("firmware download failed at %d with %d",pos,ret);
335 /* start the firmware */
336 if ((ret = dib0700_jumpram(udev, 0x70000000)) == 0) {
337 info("firmware started successfully.");
346 int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
348 struct dib0700_state *st = adap->dev->priv;
351 b[0] = REQUEST_ENABLE_VIDEO;
352 b[1] = (onoff << 4) | 0x00; /* this bit gives a kind of command, rather than enabling something or not */
354 if (st->disable_streaming_master_mode == 1)
357 b[2] = (0x01 << 4); /* Master mode */
361 deb_info("modifying (%d) streaming state for %d\n", onoff, adap->id);
364 st->channel_state |= 1 << adap->id;
366 st->channel_state &= ~(1 << adap->id);
368 b[2] |= st->channel_state;
370 deb_info("data for streaming: %x %x\n",b[1],b[2]);
372 return dib0700_ctrl_wr(adap->dev, b, 4);
375 int dib0700_rc_setup(struct dvb_usb_device *d)
377 u8 rc_setup[3] = {REQUEST_SET_RC, dvb_usb_dib0700_ir_proto, 0};
378 int i = dib0700_ctrl_wr(d, rc_setup, 3);
380 err("ir protocol setup failed");
386 static int dib0700_probe(struct usb_interface *intf,
387 const struct usb_device_id *id)
390 struct dvb_usb_device *dev;
392 for (i = 0; i < dib0700_device_count; i++)
393 if (dvb_usb_device_init(intf, &dib0700_devices[i], THIS_MODULE,
394 &dev, adapter_nr) == 0)
396 dib0700_rc_setup(dev);
403 static struct usb_driver dib0700_driver = {
404 .name = "dvb_usb_dib0700",
405 .probe = dib0700_probe,
406 .disconnect = dvb_usb_device_exit,
407 .id_table = dib0700_usb_id_table,
411 static int __init dib0700_module_init(void)
414 info("loaded with support for %d different device-types", dib0700_device_count);
415 if ((result = usb_register(&dib0700_driver))) {
416 err("usb_register failed. Error number %d",result);
423 static void __exit dib0700_module_exit(void)
425 /* deregister this driver from the USB subsystem */
426 usb_deregister(&dib0700_driver);
429 module_init (dib0700_module_init);
430 module_exit (dib0700_module_exit);
432 MODULE_AUTHOR("Patrick Boettcher <pboettcher@dibcom.fr>");
433 MODULE_DESCRIPTION("Driver for devices based on DiBcom DiB0700 - USB bridge");
434 MODULE_VERSION("1.0");
435 MODULE_LICENSE("GPL");