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b7f54910 PB |
1 | /* Linux driver for devices based on the DiBcom DiB0700 USB bridge |
2 | * | |
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. | |
6 | * | |
7 | * Copyright (C) 2005-6 DiBcom, SA | |
8 | */ | |
9 | #include "dib0700.h" | |
10 | ||
11 | /* debug */ | |
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); | |
15 | ||
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) | |
18 | { | |
19 | int status; | |
20 | ||
21 | deb_data(">>> "); | |
22 | debug_dump(tx,txlen,deb_data); | |
23 | ||
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); | |
27 | ||
28 | if (status != txlen) | |
6958effe | 29 | deb_data("ep 0 write error (status = %d, len: %d)\n",status,txlen); |
b7f54910 PB |
30 | |
31 | return status < 0 ? status : 0; | |
32 | } | |
33 | ||
34 | /* expecting tx buffer: request data[0] ... data[n] (n <= 4) */ | |
54d75eba | 35 | int dib0700_ctrl_rd(struct dvb_usb_device *d, u8 *tx, u8 txlen, u8 *rx, u8 rxlen) |
b7f54910 PB |
36 | { |
37 | u16 index, value; | |
38 | int status; | |
39 | ||
40 | if (txlen < 2) { | |
41 | err("tx buffer length is smaller than 2. Makes no sense."); | |
42 | return -EINVAL; | |
43 | } | |
44 | if (txlen > 4) { | |
45 | err("tx buffer length is larger than 4. Not supported."); | |
46 | return -EINVAL; | |
47 | } | |
48 | ||
49 | deb_data(">>> "); | |
50 | debug_dump(tx,txlen,deb_data); | |
51 | ||
52 | value = ((txlen - 2) << 8) | tx[1]; | |
53 | index = 0; | |
54 | if (txlen > 2) | |
55 | index |= (tx[2] << 8); | |
56 | if (txlen > 3) | |
57 | index |= tx[3]; | |
58 | ||
b7f54910 PB |
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); | |
62 | ||
63 | if (status < 0) | |
6958effe | 64 | deb_info("ep 0 read error (status = %d)\n",status); |
b7f54910 PB |
65 | |
66 | deb_data("<<< "); | |
67 | debug_dump(rx,rxlen,deb_data); | |
68 | ||
69 | return status; /* length in case of success */ | |
70 | } | |
71 | ||
72 | int dib0700_set_gpio(struct dvb_usb_device *d, enum dib07x0_gpios gpio, u8 gpio_dir, u8 gpio_val) | |
73 | { | |
74 | u8 buf[3] = { REQUEST_SET_GPIO, gpio, ((gpio_dir & 0x01) << 7) | ((gpio_val & 0x01) << 6) }; | |
75 | return dib0700_ctrl_wr(d,buf,3); | |
76 | } | |
77 | ||
78 | /* | |
79 | * I2C master xfer function | |
80 | */ | |
81 | static int dib0700_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg *msg,int num) | |
82 | { | |
83 | struct dvb_usb_device *d = i2c_get_adapdata(adap); | |
84 | int i,len; | |
85 | u8 buf[255]; | |
86 | ||
87 | if (mutex_lock_interruptible(&d->i2c_mutex) < 0) | |
88 | return -EAGAIN; | |
89 | ||
90 | for (i = 0; i < num; i++) { | |
91 | /* fill in the address */ | |
92 | buf[1] = (msg[i].addr << 1); | |
93 | /* fill the buffer */ | |
94 | memcpy(&buf[2], msg[i].buf, msg[i].len); | |
95 | ||
96 | /* write/read request */ | |
97 | if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) { | |
98 | buf[0] = REQUEST_I2C_READ; | |
99 | buf[1] |= 1; | |
100 | ||
101 | /* special thing in the current firmware: when length is zero the read-failed */ | |
303cbeaa PB |
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); | |
b7f54910 | 104 | break; |
303cbeaa | 105 | } |
b7f54910 PB |
106 | |
107 | msg[i+1].len = len; | |
108 | ||
109 | i++; | |
110 | } else { | |
111 | buf[0] = REQUEST_I2C_WRITE; | |
112 | if (dib0700_ctrl_wr(d, buf, msg[i].len + 2) < 0) | |
113 | break; | |
114 | } | |
115 | } | |
116 | ||
117 | mutex_unlock(&d->i2c_mutex); | |
118 | return i; | |
119 | } | |
120 | ||
121 | static u32 dib0700_i2c_func(struct i2c_adapter *adapter) | |
122 | { | |
123 | return I2C_FUNC_I2C; | |
124 | } | |
125 | ||
126 | struct i2c_algorithm dib0700_i2c_algo = { | |
127 | .master_xfer = dib0700_i2c_xfer, | |
128 | .functionality = dib0700_i2c_func, | |
129 | }; | |
130 | ||
6958effe PB |
131 | int dib0700_identify_state(struct usb_device *udev, struct dvb_usb_device_properties *props, |
132 | struct dvb_usb_device_description **desc, int *cold) | |
133 | { | |
a75763ff PB |
134 | u8 b[16]; |
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); | |
137 | ||
138 | deb_info("FW GET_VERSION length: %d\n",ret); | |
139 | ||
140 | *cold = ret <= 0; | |
6958effe PB |
141 | |
142 | deb_info("cold: %d\n", *cold); | |
6958effe PB |
143 | return 0; |
144 | } | |
145 | ||
a75763ff PB |
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) | |
149 | { | |
150 | u8 b[10]; | |
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 | |
161 | ||
162 | return dib0700_ctrl_wr(d, b, 10); | |
163 | } | |
164 | ||
165 | int dib0700_ctrl_clock(struct dvb_usb_device *d, u32 clk_MHz, u8 clock_out_gp3) | |
166 | { | |
167 | switch (clk_MHz) { | |
168 | case 72: dib0700_set_clock(d, 1, 0, 1, clock_out_gp3, 2, 24, 0, 0x4c); break; | |
169 | default: return -EINVAL; | |
170 | } | |
171 | return 0; | |
172 | } | |
173 | ||
b7f54910 PB |
174 | static int dib0700_jumpram(struct usb_device *udev, u32 address) |
175 | { | |
176 | int ret, actlen; | |
177 | u8 buf[8] = { REQUEST_JUMPRAM, 0, 0, 0, | |
178 | (address >> 24) & 0xff, | |
179 | (address >> 16) & 0xff, | |
180 | (address >> 8) & 0xff, | |
181 | address & 0xff }; | |
182 | ||
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); | |
185 | return ret; | |
186 | } | |
187 | if (actlen != 8) { | |
188 | deb_fw("jumpram to 0x%x failed\n",address); | |
189 | return -EIO; | |
190 | } | |
191 | return 0; | |
192 | } | |
193 | ||
194 | int dib0700_download_firmware(struct usb_device *udev, const struct firmware *fw) | |
195 | { | |
196 | struct hexline hx; | |
197 | int pos = 0, ret, act_len; | |
198 | ||
199 | u8 buf[260]; | |
200 | ||
201 | while ((ret = dvb_usb_get_hexline(fw, &hx, &pos)) > 0) { | |
5bc63607 | 202 | deb_fwdata("writing to address 0x%08x (buffer: 0x%02x %02x)\n",hx.addr, hx.len, hx.chk); |
b7f54910 PB |
203 | |
204 | buf[0] = hx.len; | |
5bc63607 PB |
205 | buf[1] = (hx.addr >> 8) & 0xff; |
206 | buf[2] = hx.addr & 0xff; | |
b7f54910 PB |
207 | buf[3] = hx.type; |
208 | memcpy(&buf[4],hx.data,hx.len); | |
209 | buf[4+hx.len] = hx.chk; | |
210 | ||
211 | ret = usb_bulk_msg(udev, | |
212 | usb_sndbulkpipe(udev, 0x01), | |
213 | buf, | |
214 | hx.len + 5, | |
215 | &act_len, | |
216 | 1000); | |
217 | ||
218 | if (ret < 0) { | |
219 | err("firmware download failed at %d with %d",pos,ret); | |
220 | return ret; | |
221 | } | |
222 | } | |
223 | ||
224 | if (ret == 0) { | |
225 | /* start the firmware */ | |
6958effe | 226 | if ((ret = dib0700_jumpram(udev, 0x70000000)) == 0) { |
b7f54910 | 227 | info("firmware started successfully."); |
a75763ff | 228 | msleep(500); |
6958effe | 229 | } |
b7f54910 PB |
230 | } else |
231 | ret = -EIO; | |
232 | ||
233 | return ret; | |
234 | } | |
235 | ||
236 | int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff) | |
237 | { | |
238 | struct dib0700_state *st = adap->dev->priv; | |
239 | u8 b[4]; | |
240 | ||
241 | b[0] = REQUEST_ENABLE_VIDEO; | |
242 | b[1] = 0x00; | |
243 | b[2] = (0x01 << 4); /* Master mode */ | |
244 | b[3] = 0x00; | |
245 | ||
246 | deb_info("modifying (%d) streaming state for %d\n", onoff, adap->id); | |
247 | ||
248 | if (onoff) | |
249 | st->channel_state |= 1 << adap->id; | |
250 | else | |
251 | st->channel_state &= ~(1 << adap->id); | |
252 | ||
253 | b[2] |= st->channel_state; | |
254 | ||
255 | if (st->channel_state) /* if at least one channel is active */ | |
256 | b[1] = (0x01 << 4) | 0x00; | |
257 | ||
258 | deb_info("data for streaming: %x %x\n",b[1],b[2]); | |
259 | ||
260 | return dib0700_ctrl_wr(adap->dev, b, 4); | |
261 | } | |
262 | ||
263 | static int dib0700_probe(struct usb_interface *intf, | |
264 | const struct usb_device_id *id) | |
265 | { | |
266 | int i; | |
267 | ||
268 | for (i = 0; i < dib0700_device_count; i++) | |
269 | if (dvb_usb_device_init(intf, &dib0700_devices[i], THIS_MODULE, NULL) == 0) | |
270 | return 0; | |
271 | ||
272 | return -ENODEV; | |
273 | } | |
274 | ||
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, | |
280 | }; | |
281 | ||
282 | /* module stuff */ | |
283 | static int __init dib0700_module_init(void) | |
284 | { | |
285 | int result; | |
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); | |
289 | return result; | |
290 | } | |
291 | ||
292 | return 0; | |
293 | } | |
294 | ||
295 | static void __exit dib0700_module_exit(void) | |
296 | { | |
297 | /* deregister this driver from the USB subsystem */ | |
298 | usb_deregister(&dib0700_driver); | |
299 | } | |
300 | ||
301 | module_init (dib0700_module_init); | |
302 | module_exit (dib0700_module_exit); | |
303 | ||
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"); |