1 /*
2  * FireDTV driver (formerly known as FireSAT)
3  *
4  * Copyright (C) 2004 Andreas Monitzer <andy@monitzer.com>
5  * Copyright (C) 2008 Henrik Kurelid <henrik@kurelid.se>
6  *
7  *	This program is free software; you can redistribute it and/or
8  *	modify it under the terms of the GNU General Public License as
9  *	published by the Free Software Foundation; either version 2 of
10  *	the License, or (at your option) any later version.
11  */
12 
13 #include <linux/device.h>
14 #include <linux/errno.h>
15 #include <linux/kernel.h>
16 #include <linux/string.h>
17 #include <linux/types.h>
18 
19 #include <dvb_frontend.h>
20 
21 #include "firedtv.h"
22 
23 static int fdtv_dvb_init(struct dvb_frontend *fe)
24 {
25 	struct firedtv *fdtv = fe->sec_priv;
26 	int err;
27 
28 	/* FIXME - allocate free channel at IRM */
29 	fdtv->isochannel = fdtv->adapter.num;
30 
31 	err = cmp_establish_pp_connection(fdtv, fdtv->subunit,
32 					  fdtv->isochannel);
33 	if (err) {
34 		dev_err(fdtv->device,
35 			"could not establish point to point connection\n");
36 		return err;
37 	}
38 
39 	return fdtv_start_iso(fdtv);
40 }
41 
42 static int fdtv_sleep(struct dvb_frontend *fe)
43 {
44 	struct firedtv *fdtv = fe->sec_priv;
45 
46 	fdtv_stop_iso(fdtv);
47 	cmp_break_pp_connection(fdtv, fdtv->subunit, fdtv->isochannel);
48 	fdtv->isochannel = -1;
49 	return 0;
50 }
51 
52 #define LNBCONTROL_DONTCARE 0xff
53 
54 static int fdtv_diseqc_send_master_cmd(struct dvb_frontend *fe,
55 				       struct dvb_diseqc_master_cmd *cmd)
56 {
57 	struct firedtv *fdtv = fe->sec_priv;
58 
59 	return avc_lnb_control(fdtv, LNBCONTROL_DONTCARE, LNBCONTROL_DONTCARE,
60 			       LNBCONTROL_DONTCARE, 1, cmd);
61 }
62 
63 static int fdtv_diseqc_send_burst(struct dvb_frontend *fe,
64 				  fe_sec_mini_cmd_t minicmd)
65 {
66 	return 0;
67 }
68 
69 static int fdtv_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone)
70 {
71 	struct firedtv *fdtv = fe->sec_priv;
72 
73 	fdtv->tone = tone;
74 	return 0;
75 }
76 
77 static int fdtv_set_voltage(struct dvb_frontend *fe,
78 			    fe_sec_voltage_t voltage)
79 {
80 	struct firedtv *fdtv = fe->sec_priv;
81 
82 	fdtv->voltage = voltage;
83 	return 0;
84 }
85 
86 static int fdtv_read_status(struct dvb_frontend *fe, fe_status_t *status)
87 {
88 	struct firedtv *fdtv = fe->sec_priv;
89 	struct firedtv_tuner_status stat;
90 
91 	if (avc_tuner_status(fdtv, &stat))
92 		return -EINVAL;
93 
94 	if (stat.no_rf)
95 		*status = 0;
96 	else
97 		*status = FE_HAS_SIGNAL | FE_HAS_VITERBI | FE_HAS_SYNC |
98 			  FE_HAS_CARRIER | FE_HAS_LOCK;
99 	return 0;
100 }
101 
102 static int fdtv_read_ber(struct dvb_frontend *fe, u32 *ber)
103 {
104 	struct firedtv *fdtv = fe->sec_priv;
105 	struct firedtv_tuner_status stat;
106 
107 	if (avc_tuner_status(fdtv, &stat))
108 		return -EINVAL;
109 
110 	*ber = stat.ber;
111 	return 0;
112 }
113 
114 static int fdtv_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
115 {
116 	struct firedtv *fdtv = fe->sec_priv;
117 	struct firedtv_tuner_status stat;
118 
119 	if (avc_tuner_status(fdtv, &stat))
120 		return -EINVAL;
121 
122 	*strength = stat.signal_strength << 8;
123 	return 0;
124 }
125 
126 static int fdtv_read_snr(struct dvb_frontend *fe, u16 *snr)
127 {
128 	struct firedtv *fdtv = fe->sec_priv;
129 	struct firedtv_tuner_status stat;
130 
131 	if (avc_tuner_status(fdtv, &stat))
132 		return -EINVAL;
133 
134 	/* C/N[dB] = -10 * log10(snr / 65535) */
135 	*snr = stat.carrier_noise_ratio * 257;
136 	return 0;
137 }
138 
139 static int fdtv_read_uncorrected_blocks(struct dvb_frontend *fe, u32 *ucblocks)
140 {
141 	return -EOPNOTSUPP;
142 }
143 
144 static int fdtv_set_frontend(struct dvb_frontend *fe)
145 {
146 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
147 	struct firedtv *fdtv = fe->sec_priv;
148 
149 	return avc_tuner_dsd(fdtv, p);
150 }
151 
152 void fdtv_frontend_init(struct firedtv *fdtv, const char *name)
153 {
154 	struct dvb_frontend_ops *ops = &fdtv->fe.ops;
155 	struct dvb_frontend_info *fi = &ops->info;
156 
157 	ops->init			= fdtv_dvb_init;
158 	ops->sleep			= fdtv_sleep;
159 
160 	ops->set_frontend		= fdtv_set_frontend;
161 
162 	ops->read_status		= fdtv_read_status;
163 	ops->read_ber			= fdtv_read_ber;
164 	ops->read_signal_strength	= fdtv_read_signal_strength;
165 	ops->read_snr			= fdtv_read_snr;
166 	ops->read_ucblocks		= fdtv_read_uncorrected_blocks;
167 
168 	ops->diseqc_send_master_cmd 	= fdtv_diseqc_send_master_cmd;
169 	ops->diseqc_send_burst		= fdtv_diseqc_send_burst;
170 	ops->set_tone			= fdtv_set_tone;
171 	ops->set_voltage		= fdtv_set_voltage;
172 
173 	switch (fdtv->type) {
174 	case FIREDTV_DVB_S:
175 		ops->delsys[0]		= SYS_DVBS;
176 
177 		fi->frequency_min	= 950000;
178 		fi->frequency_max	= 2150000;
179 		fi->frequency_stepsize	= 125;
180 		fi->symbol_rate_min	= 1000000;
181 		fi->symbol_rate_max	= 40000000;
182 
183 		fi->caps		= FE_CAN_INVERSION_AUTO |
184 					  FE_CAN_FEC_1_2	|
185 					  FE_CAN_FEC_2_3	|
186 					  FE_CAN_FEC_3_4	|
187 					  FE_CAN_FEC_5_6	|
188 					  FE_CAN_FEC_7_8	|
189 					  FE_CAN_FEC_AUTO	|
190 					  FE_CAN_QPSK;
191 		break;
192 
193 	case FIREDTV_DVB_S2:
194 		ops->delsys[0]		= SYS_DVBS;
195 		ops->delsys[1]		= SYS_DVBS2;
196 
197 		fi->frequency_min	= 950000;
198 		fi->frequency_max	= 2150000;
199 		fi->frequency_stepsize	= 125;
200 		fi->symbol_rate_min	= 1000000;
201 		fi->symbol_rate_max	= 40000000;
202 
203 		fi->caps		= FE_CAN_INVERSION_AUTO |
204 					  FE_CAN_FEC_1_2        |
205 					  FE_CAN_FEC_2_3        |
206 					  FE_CAN_FEC_3_4        |
207 					  FE_CAN_FEC_5_6        |
208 					  FE_CAN_FEC_7_8        |
209 					  FE_CAN_FEC_AUTO       |
210 					  FE_CAN_QPSK           |
211 					  FE_CAN_2G_MODULATION;
212 		break;
213 
214 	case FIREDTV_DVB_C:
215 		ops->delsys[0]		= SYS_DVBC_ANNEX_A;
216 
217 		fi->frequency_min	= 47000000;
218 		fi->frequency_max	= 866000000;
219 		fi->frequency_stepsize	= 62500;
220 		fi->symbol_rate_min	= 870000;
221 		fi->symbol_rate_max	= 6900000;
222 
223 		fi->caps 		= FE_CAN_INVERSION_AUTO |
224 					  FE_CAN_QAM_16		|
225 					  FE_CAN_QAM_32		|
226 					  FE_CAN_QAM_64		|
227 					  FE_CAN_QAM_128	|
228 					  FE_CAN_QAM_256	|
229 					  FE_CAN_QAM_AUTO;
230 		break;
231 
232 	case FIREDTV_DVB_T:
233 		ops->delsys[0]		= SYS_DVBT;
234 
235 		fi->frequency_min	= 49000000;
236 		fi->frequency_max	= 861000000;
237 		fi->frequency_stepsize	= 62500;
238 
239 		fi->caps 		= FE_CAN_INVERSION_AUTO		|
240 					  FE_CAN_FEC_2_3		|
241 					  FE_CAN_TRANSMISSION_MODE_AUTO |
242 					  FE_CAN_GUARD_INTERVAL_AUTO	|
243 					  FE_CAN_HIERARCHY_AUTO;
244 		break;
245 
246 	default:
247 		dev_err(fdtv->device, "no frontend for model type %d\n",
248 			fdtv->type);
249 	}
250 	strcpy(fi->name, name);
251 
252 	fdtv->fe.dvb = &fdtv->adapter;
253 	fdtv->fe.sec_priv = fdtv;
254 }
255