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 */
353 b
[2] = (0x01 << 4); /* Master mode */
356 deb_info("modifying (%d) streaming state for %d\n", onoff
, adap
->id
);
359 st
->channel_state
|= 1 << adap
->id
;
361 st
->channel_state
&= ~(1 << adap
->id
);
363 b
[2] |= st
->channel_state
;
365 deb_info("data for streaming: %x %x\n",b
[1],b
[2]);
367 return dib0700_ctrl_wr(adap
->dev
, b
, 4);
370 int dib0700_rc_setup(struct dvb_usb_device
*d
)
372 u8 rc_setup
[3] = {REQUEST_SET_RC
, dvb_usb_dib0700_ir_proto
, 0};
373 int i
= dib0700_ctrl_wr(d
, rc_setup
, 3);
375 err("ir protocol setup failed");
381 static int dib0700_probe(struct usb_interface
*intf
,
382 const struct usb_device_id
*id
)
385 struct dvb_usb_device
*dev
;
387 for (i
= 0; i
< dib0700_device_count
; i
++)
388 if (dvb_usb_device_init(intf
, &dib0700_devices
[i
], THIS_MODULE
,
389 &dev
, adapter_nr
) == 0)
391 dib0700_rc_setup(dev
);
398 static struct usb_driver dib0700_driver
= {
399 .name
= "dvb_usb_dib0700",
400 .probe
= dib0700_probe
,
401 .disconnect
= dvb_usb_device_exit
,
402 .id_table
= dib0700_usb_id_table
,
406 static int __init
dib0700_module_init(void)
409 info("loaded with support for %d different device-types", dib0700_device_count
);
410 if ((result
= usb_register(&dib0700_driver
))) {
411 err("usb_register failed. Error number %d",result
);
418 static void __exit
dib0700_module_exit(void)
420 /* deregister this driver from the USB subsystem */
421 usb_deregister(&dib0700_driver
);
424 module_init (dib0700_module_init
);
425 module_exit (dib0700_module_exit
);
427 MODULE_AUTHOR("Patrick Boettcher <pboettcher@dibcom.fr>");
428 MODULE_DESCRIPTION("Driver for devices based on DiBcom DiB0700 - USB bridge");
429 MODULE_VERSION("1.0");
430 MODULE_LICENSE("GPL");