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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/media/dvb/dibusb/dvb-fe-dtt200u.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/media/dvb/dibusb/dvb-fe-dtt200u.c')
-rw-r--r--drivers/media/dvb/dibusb/dvb-fe-dtt200u.c263
1 files changed, 263 insertions, 0 deletions
diff --git a/drivers/media/dvb/dibusb/dvb-fe-dtt200u.c b/drivers/media/dvb/dibusb/dvb-fe-dtt200u.c
new file mode 100644
index 000000000000..1872aa6d200a
--- /dev/null
+++ b/drivers/media/dvb/dibusb/dvb-fe-dtt200u.c
@@ -0,0 +1,263 @@
1/*
2 * dvb-dtt200u-fe.c is a driver which implements the frontend-part of the
3 * Yakumo/Typhoon/Hama USB2.0 boxes. It is hard-wired to the dibusb-driver as
4 * it uses the usb-transfer functions directly (maybe creating a
5 * generic-dvb-usb-lib for all usb-drivers will be reduce some more code.)
6 *
7 * Copyright (C) 2005 Patrick Boettcher <patrick.boettcher@desy.de>
8 *
9 * see dvb-dibusb-core.c for copyright details.
10 */
11
12/* guessed protocol description (reverse engineered):
13 * read
14 * 00 - USB type 0x02 for usb2.0, 0x01 for usb1.1
15 * 81 - <TS_LOCK> <current frequency divided by 250000>
16 * 82 - crash - do not touch
17 * 83 - crash - do not touch
18 * 84 - remote control
19 * 85 - crash - do not touch (OK, stop testing here)
20 * 88 - locking 2 bytes (0x80 0x40 == no signal, 0x89 0x20 == nice signal)
21 * 89 - noise-to-signal
22 * 8a - unkown 1 byte - signal_strength
23 * 8c - ber ???
24 * 8d - ber
25 * 8e - unc
26 *
27 * write
28 * 02 - bandwidth
29 * 03 - frequency (divided by 250000)
30 * 04 - pid table (index pid(7:0) pid(12:8))
31 * 05 - reset the pid table
32 * 08 - demod transfer enabled or not (FX2 transfer is enabled by default)
33 */
34
35#include "dvb-dibusb.h"
36#include "dvb_frontend.h"
37
38struct dtt200u_fe_state {
39 struct usb_dibusb *dib;
40
41 struct dvb_frontend_parameters fep;
42 struct dvb_frontend frontend;
43};
44
45#define moan(which,what) info("unexpected value in '%s' for cmd '%02x' - please report to linux-dvb@linuxtv.org",which,what)
46
47static int dtt200u_fe_read_status(struct dvb_frontend* fe, fe_status_t *stat)
48{
49 struct dtt200u_fe_state *state = fe->demodulator_priv;
50 u8 bw[1] = { 0x81 };
51 u8 br[3] = { 0 };
52// u8 bdeb[5] = { 0 };
53
54 dibusb_readwrite_usb(state->dib,bw,1,br,3);
55 switch (br[0]) {
56 case 0x01:
57 *stat = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
58 break;
59 case 0x00:
60 *stat = 0;
61 break;
62 default:
63 moan("br[0]",0x81);
64 break;
65 }
66
67// bw[0] = 0x88;
68// dibusb_readwrite_usb(state->dib,bw,1,bdeb,5);
69
70// deb_info("%02x: %02x %02x %02x %02x %02x\n",bw[0],bdeb[0],bdeb[1],bdeb[2],bdeb[3],bdeb[4]);
71
72 return 0;
73}
74static int dtt200u_fe_read_ber(struct dvb_frontend* fe, u32 *ber)
75{
76 struct dtt200u_fe_state *state = fe->demodulator_priv;
77 u8 bw[1] = { 0x8d };
78 *ber = 0;
79 dibusb_readwrite_usb(state->dib,bw,1,(u8*) ber, 3);
80 return 0;
81}
82
83static int dtt200u_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
84{
85 struct dtt200u_fe_state *state = fe->demodulator_priv;
86 u8 bw[1] = { 0x8c };
87 *unc = 0;
88 dibusb_readwrite_usb(state->dib,bw,1,(u8*) unc, 3);
89 return 0;
90}
91
92static int dtt200u_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
93{
94 struct dtt200u_fe_state *state = fe->demodulator_priv;
95 u8 bw[1] = { 0x8a };
96 u8 b;
97 dibusb_readwrite_usb(state->dib,bw,1,&b, 1);
98 *strength = (b << 8) | b;
99 return 0;
100}
101
102static int dtt200u_fe_read_snr(struct dvb_frontend* fe, u16 *snr)
103{
104 struct dtt200u_fe_state *state = fe->demodulator_priv;
105 u8 bw[1] = { 0x89 };
106 u8 br[1] = { 0 };
107 dibusb_readwrite_usb(state->dib,bw,1,br,1);
108 *snr = ((0xff - br[0]) << 8) | (0xff - br[0]);
109 return 0;
110}
111
112static int dtt200u_fe_init(struct dvb_frontend* fe)
113{
114 struct dtt200u_fe_state *state = fe->demodulator_priv;
115 u8 b[] = { 0x01 };
116 return dibusb_write_usb(state->dib,b,1);
117}
118
119static int dtt200u_fe_sleep(struct dvb_frontend* fe)
120{
121 return dtt200u_fe_init(fe);
122}
123
124static int dtt200u_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
125{
126 tune->min_delay_ms = 1500;
127 tune->step_size = 166667;
128 tune->max_drift = 166667 * 2;
129 return 0;
130}
131
132static int dtt200u_fe_set_frontend(struct dvb_frontend* fe,
133 struct dvb_frontend_parameters *fep)
134{
135 struct dtt200u_fe_state *state = fe->demodulator_priv;
136 u16 freq = fep->frequency / 250000;
137 u8 bw,bwbuf[2] = { 0x03, 0 }, freqbuf[3] = { 0x02, 0, 0 };
138
139 switch (fep->u.ofdm.bandwidth) {
140 case BANDWIDTH_8_MHZ: bw = 8; break;
141 case BANDWIDTH_7_MHZ: bw = 7; break;
142 case BANDWIDTH_6_MHZ: bw = 6; break;
143 case BANDWIDTH_AUTO: return -EOPNOTSUPP;
144 default:
145 return -EINVAL;
146 }
147 deb_info("set_frontend\n");
148
149 bwbuf[1] = bw;
150 dibusb_write_usb(state->dib,bwbuf,2);
151
152 freqbuf[1] = freq & 0xff;
153 freqbuf[2] = (freq >> 8) & 0xff;
154 dibusb_write_usb(state->dib,freqbuf,3);
155
156 memcpy(&state->fep,fep,sizeof(struct dvb_frontend_parameters));
157
158 return 0;
159}
160
161static int dtt200u_fe_get_frontend(struct dvb_frontend* fe,
162 struct dvb_frontend_parameters *fep)
163{
164 struct dtt200u_fe_state *state = fe->demodulator_priv;
165 memcpy(fep,&state->fep,sizeof(struct dvb_frontend_parameters));
166 return 0;
167}
168
169static void dtt200u_fe_release(struct dvb_frontend* fe)
170{
171 struct dtt200u_fe_state *state = (struct dtt200u_fe_state*) fe->demodulator_priv;
172 kfree(state);
173}
174
175static int dtt200u_pid_control(struct dvb_frontend *fe,int index, int pid,int onoff)
176{
177 struct dtt200u_fe_state *state = (struct dtt200u_fe_state*) fe->demodulator_priv;
178 u8 b_pid[4];
179 pid = onoff ? pid : 0;
180
181 b_pid[0] = 0x04;
182 b_pid[1] = index;
183 b_pid[2] = pid & 0xff;
184 b_pid[3] = (pid >> 8) & 0xff;
185
186 dibusb_write_usb(state->dib,b_pid,4);
187 return 0;
188}
189
190static int dtt200u_fifo_control(struct dvb_frontend *fe, int onoff)
191{
192 struct dtt200u_fe_state *state = (struct dtt200u_fe_state*) fe->demodulator_priv;
193 u8 b_streaming[2] = { 0x08, onoff };
194 u8 b_rst_pid[1] = { 0x05 };
195
196 dibusb_write_usb(state->dib,b_streaming,2);
197
198 if (!onoff)
199 dibusb_write_usb(state->dib,b_rst_pid,1);
200 return 0;
201}
202
203static struct dvb_frontend_ops dtt200u_fe_ops;
204
205struct dvb_frontend* dtt200u_fe_attach(struct usb_dibusb *dib, struct dib_fe_xfer_ops *xfer_ops)
206{
207 struct dtt200u_fe_state* state = NULL;
208
209 /* allocate memory for the internal state */
210 state = (struct dtt200u_fe_state*) kmalloc(sizeof(struct dtt200u_fe_state), GFP_KERNEL);
211 if (state == NULL)
212 goto error;
213 memset(state,0,sizeof(struct dtt200u_fe_state));
214
215 deb_info("attaching frontend dtt200u\n");
216
217 state->dib = dib;
218
219 state->frontend.ops = &dtt200u_fe_ops;
220 state->frontend.demodulator_priv = state;
221
222 xfer_ops->fifo_ctrl = dtt200u_fifo_control;
223 xfer_ops->pid_ctrl = dtt200u_pid_control;
224
225 goto success;
226error:
227 return NULL;
228success:
229 return &state->frontend;
230}
231
232static struct dvb_frontend_ops dtt200u_fe_ops = {
233 .info = {
234 .name = "DTT200U (Yakumo/Typhoon/Hama) DVB-T",
235 .type = FE_OFDM,
236 .frequency_min = 44250000,
237 .frequency_max = 867250000,
238 .frequency_stepsize = 250000,
239 .caps = FE_CAN_INVERSION_AUTO |
240 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
241 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
242 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
243 FE_CAN_TRANSMISSION_MODE_AUTO |
244 FE_CAN_GUARD_INTERVAL_AUTO |
245 FE_CAN_RECOVER |
246 FE_CAN_HIERARCHY_AUTO,
247 },
248
249 .release = dtt200u_fe_release,
250
251 .init = dtt200u_fe_init,
252 .sleep = dtt200u_fe_sleep,
253
254 .set_frontend = dtt200u_fe_set_frontend,
255 .get_frontend = dtt200u_fe_get_frontend,
256 .get_tune_settings = dtt200u_fe_get_tune_settings,
257
258 .read_status = dtt200u_fe_read_status,
259 .read_ber = dtt200u_fe_read_ber,
260 .read_signal_strength = dtt200u_fe_read_signal_strength,
261 .read_snr = dtt200u_fe_read_snr,
262 .read_ucblocks = dtt200u_fe_read_unc_blocks,
263};