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Alan Nisota9bbe0762006-05-14 13:23:56 -03001/* DVB USB compliant Linux driver for the
Alan Nisota458b6342007-08-18 17:52:35 -03002 * - GENPIX 8pks/qpsk/DCII USB2.0 DVB-S module
Alan Nisota9bbe0762006-05-14 13:23:56 -03003 *
Alan Nisota458b6342007-08-18 17:52:35 -03004 * Copyright (C) 2006,2007 Alan Nisota (alannisota@gmail.com)
5 * Copyright (C) 2006,2007 Genpix Electronics (genpix@genpix-electronics.com)
Alan Nisota9bbe0762006-05-14 13:23:56 -03006 *
7 * Thanks to GENPIX for the sample code used to implement this module.
8 *
9 * This module is based off the vp7045 and vp702x modules
10 *
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the Free
13 * Software Foundation, version 2.
14 *
15 * see Documentation/dvb/README.dvb-usb for more information
16 */
17#include "gp8psk.h"
18
19struct gp8psk_fe_state {
20 struct dvb_frontend fe;
Alan Nisota9bbe0762006-05-14 13:23:56 -030021 struct dvb_usb_device *d;
Alan Nisota458b6342007-08-18 17:52:35 -030022 u8 lock;
Alan Nisota9bbe0762006-05-14 13:23:56 -030023 u16 snr;
Alan Nisota458b6342007-08-18 17:52:35 -030024 unsigned long next_status_check;
25 unsigned long status_check_interval;
Alan Nisota9bbe0762006-05-14 13:23:56 -030026};
27
Alan Nisota458b6342007-08-18 17:52:35 -030028static int gp8psk_fe_update_status(struct gp8psk_fe_state *st)
29{
30 u8 buf[6];
31 if (time_after(jiffies,st->next_status_check)) {
32 gp8psk_usb_in_op(st->d, GET_SIGNAL_LOCK, 0,0,&st->lock,1);
33 gp8psk_usb_in_op(st->d, GET_SIGNAL_STRENGTH, 0,0,buf,6);
34 st->snr = (buf[1]) << 8 | buf[0];
35 st->next_status_check = jiffies + (st->status_check_interval*HZ)/1000;
36 }
37 return 0;
38}
39
Alan Nisota9bbe0762006-05-14 13:23:56 -030040static int gp8psk_fe_read_status(struct dvb_frontend* fe, fe_status_t *status)
41{
42 struct gp8psk_fe_state *st = fe->demodulator_priv;
Alan Nisota458b6342007-08-18 17:52:35 -030043 gp8psk_fe_update_status(st);
Alan Nisota9bbe0762006-05-14 13:23:56 -030044
Alan Nisota458b6342007-08-18 17:52:35 -030045 if (st->lock)
Alan Nisota9bbe0762006-05-14 13:23:56 -030046 *status = FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI | FE_HAS_SIGNAL | FE_HAS_CARRIER;
47 else
48 *status = 0;
49
Alan Nisota458b6342007-08-18 17:52:35 -030050 if (*status & FE_HAS_LOCK)
51 st->status_check_interval = 1000;
52 else
53 st->status_check_interval = 100;
Alan Nisota9bbe0762006-05-14 13:23:56 -030054 return 0;
55}
56
57/* not supported by this Frontend */
58static int gp8psk_fe_read_ber(struct dvb_frontend* fe, u32 *ber)
59{
60 (void) fe;
61 *ber = 0;
62 return 0;
63}
64
65/* not supported by this Frontend */
66static int gp8psk_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
67{
68 (void) fe;
69 *unc = 0;
70 return 0;
71}
72
73static int gp8psk_fe_read_snr(struct dvb_frontend* fe, u16 *snr)
74{
75 struct gp8psk_fe_state *st = fe->demodulator_priv;
Alan Nisota458b6342007-08-18 17:52:35 -030076 gp8psk_fe_update_status(st);
77 /* snr is reported in dBu*256 */
78 *snr = st->snr;
Alan Nisota9bbe0762006-05-14 13:23:56 -030079 return 0;
80}
81
82static int gp8psk_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
83{
Alan Nisota458b6342007-08-18 17:52:35 -030084 struct gp8psk_fe_state *st = fe->demodulator_priv;
85 gp8psk_fe_update_status(st);
86 /* snr is reported in dBu*256 */
87 /* snr / 38.4 ~= 100% strength */
88 /* snr * 17 returns 100% strength as 65535 */
89 if (st->snr > 0xf00)
90 *strength = 0xffff;
91 else
92 *strength = (st->snr << 4) + st->snr; /* snr*17 */
93 return 0;
Alan Nisota9bbe0762006-05-14 13:23:56 -030094}
95
96static int gp8psk_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
97{
Alan Nisota458b6342007-08-18 17:52:35 -030098 tune->min_delay_ms = 200;
Alan Nisota9bbe0762006-05-14 13:23:56 -030099 return 0;
100}
101
102static int gp8psk_fe_set_frontend(struct dvb_frontend* fe,
103 struct dvb_frontend_parameters *fep)
104{
105 struct gp8psk_fe_state *state = fe->demodulator_priv;
106 u8 cmd[10];
107 u32 freq = fep->frequency * 1000;
108
109 cmd[4] = freq & 0xff;
110 cmd[5] = (freq >> 8) & 0xff;
111 cmd[6] = (freq >> 16) & 0xff;
112 cmd[7] = (freq >> 24) & 0xff;
113
114 switch(fe->ops.info.type) {
115 case FE_QPSK:
116 cmd[0] = fep->u.qpsk.symbol_rate & 0xff;
117 cmd[1] = (fep->u.qpsk.symbol_rate >> 8) & 0xff;
118 cmd[2] = (fep->u.qpsk.symbol_rate >> 16) & 0xff;
119 cmd[3] = (fep->u.qpsk.symbol_rate >> 24) & 0xff;
120 cmd[8] = ADV_MOD_DVB_QPSK;
121 cmd[9] = 0x03; /*ADV_MOD_FEC_XXX*/
122 break;
123 default:
124 // other modes are unsuported right now
125 cmd[0] = 0;
126 cmd[1] = 0;
127 cmd[2] = 0;
128 cmd[3] = 0;
129 cmd[8] = 0;
130 cmd[9] = 0;
131 break;
132 }
133
134 gp8psk_usb_out_op(state->d,TUNE_8PSK,0,0,cmd,10);
135
Alan Nisota458b6342007-08-18 17:52:35 -0300136 state->lock = 0;
137 state->next_status_check = jiffies;
138 state->status_check_interval = 200;
Alan Nisota9bbe0762006-05-14 13:23:56 -0300139
140 return 0;
141}
142
143static int gp8psk_fe_get_frontend(struct dvb_frontend* fe,
144 struct dvb_frontend_parameters *fep)
145{
146 return 0;
147}
148
149
150static int gp8psk_fe_send_diseqc_msg (struct dvb_frontend* fe,
151 struct dvb_diseqc_master_cmd *m)
152{
153 struct gp8psk_fe_state *st = fe->demodulator_priv;
154
Harvey Harrison708bebd2008-04-08 23:20:00 -0300155 deb_fe("%s\n",__func__);
Alan Nisota9bbe0762006-05-14 13:23:56 -0300156
157 if (gp8psk_usb_out_op(st->d,SEND_DISEQC_COMMAND, m->msg[0], 0,
158 m->msg, m->msg_len)) {
159 return -EINVAL;
160 }
161 return 0;
162}
163
164static int gp8psk_fe_send_diseqc_burst (struct dvb_frontend* fe,
165 fe_sec_mini_cmd_t burst)
166{
167 struct gp8psk_fe_state *st = fe->demodulator_priv;
168 u8 cmd;
169
Harvey Harrison708bebd2008-04-08 23:20:00 -0300170 deb_fe("%s\n",__func__);
Alan Nisota9bbe0762006-05-14 13:23:56 -0300171
172 /* These commands are certainly wrong */
173 cmd = (burst == SEC_MINI_A) ? 0x00 : 0x01;
174
175 if (gp8psk_usb_out_op(st->d,SEND_DISEQC_COMMAND, cmd, 0,
176 &cmd, 0)) {
177 return -EINVAL;
178 }
179 return 0;
180}
181
182static int gp8psk_fe_set_tone (struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
183{
184 struct gp8psk_fe_state* state = fe->demodulator_priv;
185
186 if (gp8psk_usb_out_op(state->d,SET_22KHZ_TONE,
187 (tone == SEC_TONE_ON), 0, NULL, 0)) {
188 return -EINVAL;
189 }
190 return 0;
191}
192
193static int gp8psk_fe_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t voltage)
194{
195 struct gp8psk_fe_state* state = fe->demodulator_priv;
196
197 if (gp8psk_usb_out_op(state->d,SET_LNB_VOLTAGE,
198 voltage == SEC_VOLTAGE_18, 0, NULL, 0)) {
199 return -EINVAL;
200 }
201 return 0;
202}
203
Alan Nisota458b6342007-08-18 17:52:35 -0300204static int gp8psk_fe_enable_high_lnb_voltage(struct dvb_frontend* fe, long onoff)
205{
206 struct gp8psk_fe_state* state = fe->demodulator_priv;
207 return gp8psk_usb_out_op(state->d, USE_EXTRA_VOLT, onoff, 0,NULL,0);
208}
209
Alan Nisota9bbe0762006-05-14 13:23:56 -0300210static int gp8psk_fe_send_legacy_dish_cmd (struct dvb_frontend* fe, unsigned long sw_cmd)
211{
212 struct gp8psk_fe_state* state = fe->demodulator_priv;
213 u8 cmd = sw_cmd & 0x7f;
214
215 if (gp8psk_usb_out_op(state->d,SET_DN_SWITCH, cmd, 0,
216 NULL, 0)) {
217 return -EINVAL;
218 }
219 if (gp8psk_usb_out_op(state->d,SET_LNB_VOLTAGE, !!(sw_cmd & 0x80),
220 0, NULL, 0)) {
221 return -EINVAL;
222 }
223
224 return 0;
225}
226
227static void gp8psk_fe_release(struct dvb_frontend* fe)
228{
229 struct gp8psk_fe_state *state = fe->demodulator_priv;
230 kfree(state);
231}
232
233static struct dvb_frontend_ops gp8psk_fe_ops;
234
235struct dvb_frontend * gp8psk_fe_attach(struct dvb_usb_device *d)
236{
237 struct gp8psk_fe_state *s = kzalloc(sizeof(struct gp8psk_fe_state), GFP_KERNEL);
238 if (s == NULL)
239 goto error;
240
241 s->d = d;
242 memcpy(&s->fe.ops, &gp8psk_fe_ops, sizeof(struct dvb_frontend_ops));
243 s->fe.demodulator_priv = s;
244
245 goto success;
246error:
247 return NULL;
248success:
249 return &s->fe;
250}
251
252
253static struct dvb_frontend_ops gp8psk_fe_ops = {
254 .info = {
Alan Nisota458b6342007-08-18 17:52:35 -0300255 .name = "Genpix 8psk-to-USB2 DVB-S",
Alan Nisota9bbe0762006-05-14 13:23:56 -0300256 .type = FE_QPSK,
Alan Nisota458b6342007-08-18 17:52:35 -0300257 .frequency_min = 800000,
258 .frequency_max = 2250000,
Alan Nisota9bbe0762006-05-14 13:23:56 -0300259 .frequency_stepsize = 100,
260 .symbol_rate_min = 1000000,
261 .symbol_rate_max = 45000000,
262 .symbol_rate_tolerance = 500, /* ppm */
263 .caps = FE_CAN_INVERSION_AUTO |
264 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
265 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
266 FE_CAN_QPSK
267 },
268
269 .release = gp8psk_fe_release,
270
271 .init = NULL,
272 .sleep = NULL,
273
274 .set_frontend = gp8psk_fe_set_frontend,
275 .get_frontend = gp8psk_fe_get_frontend,
276 .get_tune_settings = gp8psk_fe_get_tune_settings,
277
278 .read_status = gp8psk_fe_read_status,
279 .read_ber = gp8psk_fe_read_ber,
280 .read_signal_strength = gp8psk_fe_read_signal_strength,
281 .read_snr = gp8psk_fe_read_snr,
282 .read_ucblocks = gp8psk_fe_read_unc_blocks,
283
284 .diseqc_send_master_cmd = gp8psk_fe_send_diseqc_msg,
285 .diseqc_send_burst = gp8psk_fe_send_diseqc_burst,
286 .set_tone = gp8psk_fe_set_tone,
287 .set_voltage = gp8psk_fe_set_voltage,
288 .dishnetwork_send_legacy_command = gp8psk_fe_send_legacy_dish_cmd,
Alan Nisota458b6342007-08-18 17:52:35 -0300289 .enable_high_lnb_voltage = gp8psk_fe_enable_high_lnb_voltage
Alan Nisota9bbe0762006-05-14 13:23:56 -0300290};