treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
[sfrench/cifs-2.6.git] / drivers / media / usb / ttusb-dec / ttusbdecfe.c
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 = (struct ttusbdecfe_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 = (struct ttusbdecfe_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 = (struct ttusbdecfe_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 = (struct ttusbdecfe_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 = (struct ttusbdecfe_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 = (struct ttusbdecfe_state*) fe->demodulator_priv;
191         kfree(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(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(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);