Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
[linux-2.6.git] / drivers / media / dvb / dvb-usb / gp8psk-fe.c
1 /* DVB USB compliant Linux driver for the
2  *  - GENPIX 8pks/qpsk/DCII USB2.0 DVB-S module
3  *
4  * Copyright (C) 2006,2007 Alan Nisota (alannisota@gmail.com)
5  * Copyright (C) 2006,2007 Genpix Electronics (genpix@genpix-electronics.com)
6  *
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
19 struct gp8psk_fe_state {
20         struct dvb_frontend fe;
21         struct dvb_usb_device *d;
22         u8 lock;
23         u16 snr;
24         unsigned long next_status_check;
25         unsigned long status_check_interval;
26 };
27
28 static int gp8psk_tuned_to_DCII(struct dvb_frontend *fe)
29 {
30         struct gp8psk_fe_state *st = fe->demodulator_priv;
31         u8 status;
32         gp8psk_usb_in_op(st->d, GET_8PSK_CONFIG, 0, 0, &status, 1);
33         return status & bmDCtuned;
34 }
35
36 static int gp8psk_set_tuner_mode(struct dvb_frontend *fe, int mode)
37 {
38         struct gp8psk_fe_state *state = fe->demodulator_priv;
39         return gp8psk_usb_out_op(state->d, SET_8PSK_CONFIG, mode, 0, NULL, 0);
40 }
41
42 static int gp8psk_fe_update_status(struct gp8psk_fe_state *st)
43 {
44         u8 buf[6];
45         if (time_after(jiffies,st->next_status_check)) {
46                 gp8psk_usb_in_op(st->d, GET_SIGNAL_LOCK, 0,0,&st->lock,1);
47                 gp8psk_usb_in_op(st->d, GET_SIGNAL_STRENGTH, 0,0,buf,6);
48                 st->snr = (buf[1]) << 8 | buf[0];
49                 st->next_status_check = jiffies + (st->status_check_interval*HZ)/1000;
50         }
51         return 0;
52 }
53
54 static int gp8psk_fe_read_status(struct dvb_frontend* fe, fe_status_t *status)
55 {
56         struct gp8psk_fe_state *st = fe->demodulator_priv;
57         gp8psk_fe_update_status(st);
58
59         if (st->lock)
60                 *status = FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI | FE_HAS_SIGNAL | FE_HAS_CARRIER;
61         else
62                 *status = 0;
63
64         if (*status & FE_HAS_LOCK)
65                 st->status_check_interval = 1000;
66         else
67                 st->status_check_interval = 100;
68         return 0;
69 }
70
71 /* not supported by this Frontend */
72 static int gp8psk_fe_read_ber(struct dvb_frontend* fe, u32 *ber)
73 {
74         (void) fe;
75         *ber = 0;
76         return 0;
77 }
78
79 /* not supported by this Frontend */
80 static int gp8psk_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
81 {
82         (void) fe;
83         *unc = 0;
84         return 0;
85 }
86
87 static int gp8psk_fe_read_snr(struct dvb_frontend* fe, u16 *snr)
88 {
89         struct gp8psk_fe_state *st = fe->demodulator_priv;
90         gp8psk_fe_update_status(st);
91         /* snr is reported in dBu*256 */
92         *snr = st->snr;
93         return 0;
94 }
95
96 static int gp8psk_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
97 {
98         struct gp8psk_fe_state *st = fe->demodulator_priv;
99         gp8psk_fe_update_status(st);
100         /* snr is reported in dBu*256 */
101         /* snr / 38.4 ~= 100% strength */
102         /* snr * 17 returns 100% strength as 65535 */
103         if (st->snr > 0xf00)
104                 *strength = 0xffff;
105         else
106                 *strength = (st->snr << 4) + st->snr; /* snr*17 */
107         return 0;
108 }
109
110 static int gp8psk_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
111 {
112         tune->min_delay_ms = 800;
113         return 0;
114 }
115
116 static int gp8psk_fe_set_frontend(struct dvb_frontend *fe)
117 {
118         struct gp8psk_fe_state *state = fe->demodulator_priv;
119         struct dtv_frontend_properties *c = &fe->dtv_property_cache;
120         u8 cmd[10];
121         u32 freq = c->frequency * 1000;
122         int gp_product_id = le16_to_cpu(state->d->udev->descriptor.idProduct);
123
124         deb_fe("%s()\n", __func__);
125
126         cmd[4] = freq         & 0xff;
127         cmd[5] = (freq >> 8)  & 0xff;
128         cmd[6] = (freq >> 16) & 0xff;
129         cmd[7] = (freq >> 24) & 0xff;
130
131         /* backwards compatibility: DVB-S + 8-PSK were used for Turbo-FEC */
132         if (c->delivery_system == SYS_DVBS && c->modulation == PSK_8)
133                 c->delivery_system = SYS_TURBO;
134
135         switch (c->delivery_system) {
136         case SYS_DVBS:
137                 if (c->modulation != QPSK) {
138                         deb_fe("%s: unsupported modulation selected (%d)\n",
139                                 __func__, c->modulation);
140                         return -EOPNOTSUPP;
141                 }
142                 c->fec_inner = FEC_AUTO;
143                 break;
144         case SYS_DVBS2: /* kept for backwards compatibility */
145                 deb_fe("%s: DVB-S2 delivery system selected\n", __func__);
146                 break;
147         case SYS_TURBO:
148                 deb_fe("%s: Turbo-FEC delivery system selected\n", __func__);
149                 break;
150
151         default:
152                 deb_fe("%s: unsupported delivery system selected (%d)\n",
153                         __func__, c->delivery_system);
154                 return -EOPNOTSUPP;
155         }
156
157         cmd[0] =  c->symbol_rate        & 0xff;
158         cmd[1] = (c->symbol_rate >>  8) & 0xff;
159         cmd[2] = (c->symbol_rate >> 16) & 0xff;
160         cmd[3] = (c->symbol_rate >> 24) & 0xff;
161         switch (c->modulation) {
162         case QPSK:
163                 if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
164                         if (gp8psk_tuned_to_DCII(fe))
165                                 gp8psk_bcm4500_reload(state->d);
166                 switch (c->fec_inner) {
167                 case FEC_1_2:
168                         cmd[9] = 0; break;
169                 case FEC_2_3:
170                         cmd[9] = 1; break;
171                 case FEC_3_4:
172                         cmd[9] = 2; break;
173                 case FEC_5_6:
174                         cmd[9] = 3; break;
175                 case FEC_7_8:
176                         cmd[9] = 4; break;
177                 case FEC_AUTO:
178                         cmd[9] = 5; break;
179                 default:
180                         cmd[9] = 5; break;
181                 }
182                 if (c->delivery_system == SYS_TURBO)
183                         cmd[8] = ADV_MOD_TURBO_QPSK;
184                 else
185                         cmd[8] = ADV_MOD_DVB_QPSK;
186                 break;
187         case PSK_8: /* PSK_8 is for compatibility with DN */
188                 cmd[8] = ADV_MOD_TURBO_8PSK;
189                 switch (c->fec_inner) {
190                 case FEC_2_3:
191                         cmd[9] = 0; break;
192                 case FEC_3_4:
193                         cmd[9] = 1; break;
194                 case FEC_3_5:
195                         cmd[9] = 2; break;
196                 case FEC_5_6:
197                         cmd[9] = 3; break;
198                 case FEC_8_9:
199                         cmd[9] = 4; break;
200                 default:
201                         cmd[9] = 0; break;
202                 }
203                 break;
204         case QAM_16: /* QAM_16 is for compatibility with DN */
205                 cmd[8] = ADV_MOD_TURBO_16QAM;
206                 cmd[9] = 0;
207                 break;
208         default: /* Unknown modulation */
209                 deb_fe("%s: unsupported modulation selected (%d)\n",
210                         __func__, c->modulation);
211                 return -EOPNOTSUPP;
212         }
213
214         if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
215                 gp8psk_set_tuner_mode(fe, 0);
216         gp8psk_usb_out_op(state->d, TUNE_8PSK, 0, 0, cmd, 10);
217
218         state->lock = 0;
219         state->next_status_check = jiffies;
220         state->status_check_interval = 200;
221
222         return 0;
223 }
224
225 static int gp8psk_fe_send_diseqc_msg (struct dvb_frontend* fe,
226                                     struct dvb_diseqc_master_cmd *m)
227 {
228         struct gp8psk_fe_state *st = fe->demodulator_priv;
229
230         deb_fe("%s\n",__func__);
231
232         if (gp8psk_usb_out_op(st->d,SEND_DISEQC_COMMAND, m->msg[0], 0,
233                         m->msg, m->msg_len)) {
234                 return -EINVAL;
235         }
236         return 0;
237 }
238
239 static int gp8psk_fe_send_diseqc_burst (struct dvb_frontend* fe,
240                                     fe_sec_mini_cmd_t burst)
241 {
242         struct gp8psk_fe_state *st = fe->demodulator_priv;
243         u8 cmd;
244
245         deb_fe("%s\n",__func__);
246
247         /* These commands are certainly wrong */
248         cmd = (burst == SEC_MINI_A) ? 0x00 : 0x01;
249
250         if (gp8psk_usb_out_op(st->d,SEND_DISEQC_COMMAND, cmd, 0,
251                         &cmd, 0)) {
252                 return -EINVAL;
253         }
254         return 0;
255 }
256
257 static int gp8psk_fe_set_tone (struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
258 {
259         struct gp8psk_fe_state* state = fe->demodulator_priv;
260
261         if (gp8psk_usb_out_op(state->d,SET_22KHZ_TONE,
262                  (tone == SEC_TONE_ON), 0, NULL, 0)) {
263                 return -EINVAL;
264         }
265         return 0;
266 }
267
268 static int gp8psk_fe_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t voltage)
269 {
270         struct gp8psk_fe_state* state = fe->demodulator_priv;
271
272         if (gp8psk_usb_out_op(state->d,SET_LNB_VOLTAGE,
273                          voltage == SEC_VOLTAGE_18, 0, NULL, 0)) {
274                 return -EINVAL;
275         }
276         return 0;
277 }
278
279 static int gp8psk_fe_enable_high_lnb_voltage(struct dvb_frontend* fe, long onoff)
280 {
281         struct gp8psk_fe_state* state = fe->demodulator_priv;
282         return gp8psk_usb_out_op(state->d, USE_EXTRA_VOLT, onoff, 0,NULL,0);
283 }
284
285 static int gp8psk_fe_send_legacy_dish_cmd (struct dvb_frontend* fe, unsigned long sw_cmd)
286 {
287         struct gp8psk_fe_state* state = fe->demodulator_priv;
288         u8 cmd = sw_cmd & 0x7f;
289
290         if (gp8psk_usb_out_op(state->d,SET_DN_SWITCH, cmd, 0,
291                         NULL, 0)) {
292                 return -EINVAL;
293         }
294         if (gp8psk_usb_out_op(state->d,SET_LNB_VOLTAGE, !!(sw_cmd & 0x80),
295                         0, NULL, 0)) {
296                 return -EINVAL;
297         }
298
299         return 0;
300 }
301
302 static void gp8psk_fe_release(struct dvb_frontend* fe)
303 {
304         struct gp8psk_fe_state *state = fe->demodulator_priv;
305         kfree(state);
306 }
307
308 static struct dvb_frontend_ops gp8psk_fe_ops;
309
310 struct dvb_frontend * gp8psk_fe_attach(struct dvb_usb_device *d)
311 {
312         struct gp8psk_fe_state *s = kzalloc(sizeof(struct gp8psk_fe_state), GFP_KERNEL);
313         if (s == NULL)
314                 goto error;
315
316         s->d = d;
317         memcpy(&s->fe.ops, &gp8psk_fe_ops, sizeof(struct dvb_frontend_ops));
318         s->fe.demodulator_priv = s;
319
320         goto success;
321 error:
322         return NULL;
323 success:
324         return &s->fe;
325 }
326
327
328 static struct dvb_frontend_ops gp8psk_fe_ops = {
329         .delsys = { SYS_DVBS },
330         .info = {
331                 .name                   = "Genpix DVB-S",
332                 .frequency_min          = 800000,
333                 .frequency_max          = 2250000,
334                 .frequency_stepsize     = 100,
335                 .symbol_rate_min        = 1000000,
336                 .symbol_rate_max        = 45000000,
337                 .symbol_rate_tolerance  = 500,  /* ppm */
338                 .caps = FE_CAN_INVERSION_AUTO |
339                         FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
340                         FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
341                         /*
342                          * FE_CAN_QAM_16 is for compatibility
343                          * (Myth incorrectly detects Turbo-QPSK as plain QAM-16)
344                          */
345                         FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_TURBO_FEC
346         },
347
348         .release = gp8psk_fe_release,
349
350         .init = NULL,
351         .sleep = NULL,
352
353         .set_frontend = gp8psk_fe_set_frontend,
354
355         .get_tune_settings = gp8psk_fe_get_tune_settings,
356
357         .read_status = gp8psk_fe_read_status,
358         .read_ber = gp8psk_fe_read_ber,
359         .read_signal_strength = gp8psk_fe_read_signal_strength,
360         .read_snr = gp8psk_fe_read_snr,
361         .read_ucblocks = gp8psk_fe_read_unc_blocks,
362
363         .diseqc_send_master_cmd = gp8psk_fe_send_diseqc_msg,
364         .diseqc_send_burst = gp8psk_fe_send_diseqc_burst,
365         .set_tone = gp8psk_fe_set_tone,
366         .set_voltage = gp8psk_fe_set_voltage,
367         .dishnetwork_send_legacy_command = gp8psk_fe_send_legacy_dish_cmd,
368         .enable_high_lnb_voltage = gp8psk_fe_enable_high_lnb_voltage
369 };