1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * TTUSB DEC Frontend Driver |
4 | * |
5 | * Copyright (C) 2003-2004 Alex Woods <linux-dvb@giblets.org> |
6 | */ |
7 | |
8 | #include <media/dvb_frontend.h> |
9 | #include "ttusbdecfe.h" |
10 | |
11 | |
12 | #define LOF_HI 10600000 |
13 | #define LOF_LO 9750000 |
14 | |
15 | struct ttusbdecfe_state { |
16 | |
17 | /* configuration settings */ |
18 | const struct ttusbdecfe_config* config; |
19 | |
20 | struct dvb_frontend frontend; |
21 | |
22 | u8 hi_band; |
23 | u8 voltage; |
24 | }; |
25 | |
26 | |
27 | static int ttusbdecfe_dvbs_read_status(struct dvb_frontend *fe, |
28 | enum fe_status *status) |
29 | { |
30 | *status = FE_HAS_SIGNAL | FE_HAS_VITERBI | |
31 | FE_HAS_SYNC | FE_HAS_CARRIER | FE_HAS_LOCK; |
32 | return 0; |
33 | } |
34 | |
35 | |
36 | static int ttusbdecfe_dvbt_read_status(struct dvb_frontend *fe, |
37 | enum fe_status *status) |
38 | { |
39 | struct ttusbdecfe_state* state = fe->demodulator_priv; |
40 | u8 b[] = { 0x00, 0x00, 0x00, 0x00, |
41 | 0x00, 0x00, 0x00, 0x00 }; |
42 | u8 result[4]; |
43 | int len, ret; |
44 | |
45 | *status=0; |
46 | |
47 | ret=state->config->send_command(fe, 0x73, sizeof(b), b, &len, result); |
48 | if(ret) |
49 | return ret; |
50 | |
51 | if(len != 4) { |
52 | printk(KERN_ERR "%s: unexpected reply\n" , __func__); |
53 | return -EIO; |
54 | } |
55 | |
56 | switch(result[3]) { |
57 | case 1: /* not tuned yet */ |
58 | case 2: /* no signal/no lock*/ |
59 | break; |
60 | case 3: /* signal found and locked*/ |
61 | *status = FE_HAS_SIGNAL | FE_HAS_VITERBI | |
62 | FE_HAS_SYNC | FE_HAS_CARRIER | FE_HAS_LOCK; |
63 | break; |
64 | case 4: |
65 | *status = FE_TIMEDOUT; |
66 | break; |
67 | default: |
68 | pr_info("%s: returned unknown value: %d\n" , |
69 | __func__, result[3]); |
70 | return -EIO; |
71 | } |
72 | |
73 | return 0; |
74 | } |
75 | |
76 | static int ttusbdecfe_dvbt_set_frontend(struct dvb_frontend *fe) |
77 | { |
78 | struct dtv_frontend_properties *p = &fe->dtv_property_cache; |
79 | struct ttusbdecfe_state *state = fe->demodulator_priv; |
80 | u8 b[] = { 0x00, 0x00, 0x00, 0x03, |
81 | 0x00, 0x00, 0x00, 0x00, |
82 | 0x00, 0x00, 0x00, 0x01, |
83 | 0x00, 0x00, 0x00, 0xff, |
84 | 0x00, 0x00, 0x00, 0xff }; |
85 | |
86 | __be32 freq = htonl(p->frequency / 1000); |
87 | memcpy(&b[4], &freq, sizeof (u32)); |
88 | state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL); |
89 | |
90 | return 0; |
91 | } |
92 | |
93 | static int ttusbdecfe_dvbt_get_tune_settings(struct dvb_frontend* fe, |
94 | struct dvb_frontend_tune_settings* fesettings) |
95 | { |
96 | fesettings->min_delay_ms = 1500; |
97 | /* Drift compensation makes no sense for DVB-T */ |
98 | fesettings->step_size = 0; |
99 | fesettings->max_drift = 0; |
100 | return 0; |
101 | } |
102 | |
103 | static int ttusbdecfe_dvbs_set_frontend(struct dvb_frontend *fe) |
104 | { |
105 | struct dtv_frontend_properties *p = &fe->dtv_property_cache; |
106 | struct ttusbdecfe_state *state = fe->demodulator_priv; |
107 | |
108 | u8 b[] = { 0x00, 0x00, 0x00, 0x01, |
109 | 0x00, 0x00, 0x00, 0x00, |
110 | 0x00, 0x00, 0x00, 0x01, |
111 | 0x00, 0x00, 0x00, 0x00, |
112 | 0x00, 0x00, 0x00, 0x00, |
113 | 0x00, 0x00, 0x00, 0x00, |
114 | 0x00, 0x00, 0x00, 0x00, |
115 | 0x00, 0x00, 0x00, 0x00, |
116 | 0x00, 0x00, 0x00, 0x00, |
117 | 0x00, 0x00, 0x00, 0x00 }; |
118 | __be32 freq; |
119 | __be32 sym_rate; |
120 | __be32 band; |
121 | __be32 lnb_voltage; |
122 | |
123 | freq = htonl(p->frequency + |
124 | (state->hi_band ? LOF_HI : LOF_LO)); |
125 | memcpy(&b[4], &freq, sizeof(u32)); |
126 | sym_rate = htonl(p->symbol_rate); |
127 | memcpy(&b[12], &sym_rate, sizeof(u32)); |
128 | band = htonl(state->hi_band ? LOF_HI : LOF_LO); |
129 | memcpy(&b[24], &band, sizeof(u32)); |
130 | lnb_voltage = htonl(state->voltage); |
131 | memcpy(&b[28], &lnb_voltage, sizeof(u32)); |
132 | |
133 | state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL); |
134 | |
135 | return 0; |
136 | } |
137 | |
138 | static int ttusbdecfe_dvbs_diseqc_send_master_cmd(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd *cmd) |
139 | { |
140 | struct ttusbdecfe_state *state = fe->demodulator_priv; |
141 | u8 b[] = { 0x00, 0xff, 0x00, 0x00, |
142 | 0x00, 0x00, 0x00, 0x00, |
143 | 0x00, 0x00 }; |
144 | |
145 | if (cmd->msg_len > sizeof(b) - 4) |
146 | return -EINVAL; |
147 | |
148 | memcpy(&b[4], cmd->msg, cmd->msg_len); |
149 | |
150 | state->config->send_command(fe, 0x72, |
151 | sizeof(b) - (6 - cmd->msg_len), b, |
152 | NULL, NULL); |
153 | |
154 | return 0; |
155 | } |
156 | |
157 | |
158 | static int ttusbdecfe_dvbs_set_tone(struct dvb_frontend *fe, |
159 | enum fe_sec_tone_mode tone) |
160 | { |
161 | struct ttusbdecfe_state *state = fe->demodulator_priv; |
162 | |
163 | state->hi_band = (SEC_TONE_ON == tone); |
164 | |
165 | return 0; |
166 | } |
167 | |
168 | |
169 | static int ttusbdecfe_dvbs_set_voltage(struct dvb_frontend *fe, |
170 | enum fe_sec_voltage voltage) |
171 | { |
172 | struct ttusbdecfe_state *state = fe->demodulator_priv; |
173 | |
174 | switch (voltage) { |
175 | case SEC_VOLTAGE_13: |
176 | state->voltage = 13; |
177 | break; |
178 | case SEC_VOLTAGE_18: |
179 | state->voltage = 18; |
180 | break; |
181 | default: |
182 | return -EINVAL; |
183 | } |
184 | |
185 | return 0; |
186 | } |
187 | |
188 | static void ttusbdecfe_release(struct dvb_frontend* fe) |
189 | { |
190 | struct ttusbdecfe_state *state = fe->demodulator_priv; |
191 | kfree(objp: state); |
192 | } |
193 | |
194 | static const struct dvb_frontend_ops ttusbdecfe_dvbt_ops; |
195 | |
196 | struct dvb_frontend* ttusbdecfe_dvbt_attach(const struct ttusbdecfe_config* config) |
197 | { |
198 | struct ttusbdecfe_state* state = NULL; |
199 | |
200 | /* allocate memory for the internal state */ |
201 | state = kmalloc(size: sizeof(struct ttusbdecfe_state), GFP_KERNEL); |
202 | if (state == NULL) |
203 | return NULL; |
204 | |
205 | /* setup the state */ |
206 | state->config = config; |
207 | |
208 | /* create dvb_frontend */ |
209 | memcpy(&state->frontend.ops, &ttusbdecfe_dvbt_ops, sizeof(struct dvb_frontend_ops)); |
210 | state->frontend.demodulator_priv = state; |
211 | return &state->frontend; |
212 | } |
213 | |
214 | static const struct dvb_frontend_ops ttusbdecfe_dvbs_ops; |
215 | |
216 | struct dvb_frontend* ttusbdecfe_dvbs_attach(const struct ttusbdecfe_config* config) |
217 | { |
218 | struct ttusbdecfe_state* state = NULL; |
219 | |
220 | /* allocate memory for the internal state */ |
221 | state = kmalloc(size: sizeof(struct ttusbdecfe_state), GFP_KERNEL); |
222 | if (state == NULL) |
223 | return NULL; |
224 | |
225 | /* setup the state */ |
226 | state->config = config; |
227 | state->voltage = 0; |
228 | state->hi_band = 0; |
229 | |
230 | /* create dvb_frontend */ |
231 | memcpy(&state->frontend.ops, &ttusbdecfe_dvbs_ops, sizeof(struct dvb_frontend_ops)); |
232 | state->frontend.demodulator_priv = state; |
233 | return &state->frontend; |
234 | } |
235 | |
236 | static const struct dvb_frontend_ops ttusbdecfe_dvbt_ops = { |
237 | .delsys = { SYS_DVBT }, |
238 | .info = { |
239 | .name = "TechnoTrend/Hauppauge DEC2000-t Frontend" , |
240 | .frequency_min_hz = 51 * MHz, |
241 | .frequency_max_hz = 858 * MHz, |
242 | .frequency_stepsize_hz = 62500, |
243 | .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | |
244 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | |
245 | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | |
246 | FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO | |
247 | FE_CAN_HIERARCHY_AUTO, |
248 | }, |
249 | |
250 | .release = ttusbdecfe_release, |
251 | |
252 | .set_frontend = ttusbdecfe_dvbt_set_frontend, |
253 | |
254 | .get_tune_settings = ttusbdecfe_dvbt_get_tune_settings, |
255 | |
256 | .read_status = ttusbdecfe_dvbt_read_status, |
257 | }; |
258 | |
259 | static const struct dvb_frontend_ops ttusbdecfe_dvbs_ops = { |
260 | .delsys = { SYS_DVBS }, |
261 | .info = { |
262 | .name = "TechnoTrend/Hauppauge DEC3000-s Frontend" , |
263 | .frequency_min_hz = 950 * MHz, |
264 | .frequency_max_hz = 2150 * MHz, |
265 | .frequency_stepsize_hz = 125 * kHz, |
266 | .symbol_rate_min = 1000000, /* guessed */ |
267 | .symbol_rate_max = 45000000, /* guessed */ |
268 | .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | |
269 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | |
270 | FE_CAN_QPSK |
271 | }, |
272 | |
273 | .release = ttusbdecfe_release, |
274 | |
275 | .set_frontend = ttusbdecfe_dvbs_set_frontend, |
276 | |
277 | .read_status = ttusbdecfe_dvbs_read_status, |
278 | |
279 | .diseqc_send_master_cmd = ttusbdecfe_dvbs_diseqc_send_master_cmd, |
280 | .set_voltage = ttusbdecfe_dvbs_set_voltage, |
281 | .set_tone = ttusbdecfe_dvbs_set_tone, |
282 | }; |
283 | |
284 | MODULE_DESCRIPTION("TTUSB DEC DVB-T/S Demodulator driver" ); |
285 | MODULE_AUTHOR("Alex Woods/Andrew de Quincey" ); |
286 | MODULE_LICENSE("GPL" ); |
287 | |
288 | EXPORT_SYMBOL(ttusbdecfe_dvbt_attach); |
289 | EXPORT_SYMBOL(ttusbdecfe_dvbs_attach); |
290 | |