X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;ds=sidebyside;f=drivers%2Fmedia%2Fdvb%2Fdvb-usb%2Fgp8psk-fe.c;fp=drivers%2Fmedia%2Fdvb%2Fdvb-usb%2Fgp8psk-fe.c;h=6ccbdc9cd7725a58c444f9275d67a86f7c9a5c09;hb=f05f9504c50ed069377d37f02f22e7a16b5921de;hp=0000000000000000000000000000000000000000;hpb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;p=linux-2.6.git diff --git a/drivers/media/dvb/dvb-usb/gp8psk-fe.c b/drivers/media/dvb/dvb-usb/gp8psk-fe.c new file mode 100644 index 000000000..6ccbdc9cd --- /dev/null +++ b/drivers/media/dvb/dvb-usb/gp8psk-fe.c @@ -0,0 +1,272 @@ +/* DVB USB compliant Linux driver for the + * - GENPIX 8pks/qpsk USB2.0 DVB-S module + * + * Copyright (C) 2006 Alan Nisota (alannisota@gmail.com) + * + * Thanks to GENPIX for the sample code used to implement this module. + * + * This module is based off the vp7045 and vp702x modules + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation, version 2. + * + * see Documentation/dvb/README.dvb-usb for more information + */ +#include "gp8psk.h" + +struct gp8psk_fe_state { + struct dvb_frontend fe; + + struct dvb_usb_device *d; + + u16 snr; + + unsigned long next_snr_check; +}; + +static int gp8psk_fe_read_status(struct dvb_frontend* fe, fe_status_t *status) +{ + struct gp8psk_fe_state *st = fe->demodulator_priv; + u8 lock; + + if (gp8psk_usb_in_op(st->d, GET_SIGNAL_LOCK, 0, 0, &lock,1)) + return -EINVAL; + + if (lock) + *status = FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI | FE_HAS_SIGNAL | FE_HAS_CARRIER; + else + *status = 0; + + return 0; +} + +/* not supported by this Frontend */ +static int gp8psk_fe_read_ber(struct dvb_frontend* fe, u32 *ber) +{ + (void) fe; + *ber = 0; + return 0; +} + +/* not supported by this Frontend */ +static int gp8psk_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc) +{ + (void) fe; + *unc = 0; + return 0; +} + +static int gp8psk_fe_read_snr(struct dvb_frontend* fe, u16 *snr) +{ + struct gp8psk_fe_state *st = fe->demodulator_priv; + u8 buf[2]; + + if (time_after(jiffies,st->next_snr_check)) { + gp8psk_usb_in_op(st->d,GET_SIGNAL_STRENGTH,0,0,buf,2); + *snr = (int)(buf[1]) << 8 | buf[0]; + /* snr is reported in dBu*256 */ + /* snr / 38.4 ~= 100% strength */ + /* snr * 17 returns 100% strength as 65535 */ + if (*snr <= 3855) + *snr = (*snr<<4) + *snr; // snr * 17 + else + *snr = 65535; + st->next_snr_check = jiffies + (10*HZ)/1000; + } else { + *snr = st->snr; + } + return 0; +} + +static int gp8psk_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength) +{ + return gp8psk_fe_read_snr(fe, strength); +} + +static int gp8psk_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune) +{ + tune->min_delay_ms = 800; + return 0; +} + +static int gp8psk_fe_set_frontend(struct dvb_frontend* fe, + struct dvb_frontend_parameters *fep) +{ + struct gp8psk_fe_state *state = fe->demodulator_priv; + u8 cmd[10]; + u32 freq = fep->frequency * 1000; + + cmd[4] = freq & 0xff; + cmd[5] = (freq >> 8) & 0xff; + cmd[6] = (freq >> 16) & 0xff; + cmd[7] = (freq >> 24) & 0xff; + + switch(fe->ops.info.type) { + case FE_QPSK: + cmd[0] = fep->u.qpsk.symbol_rate & 0xff; + cmd[1] = (fep->u.qpsk.symbol_rate >> 8) & 0xff; + cmd[2] = (fep->u.qpsk.symbol_rate >> 16) & 0xff; + cmd[3] = (fep->u.qpsk.symbol_rate >> 24) & 0xff; + cmd[8] = ADV_MOD_DVB_QPSK; + cmd[9] = 0x03; /*ADV_MOD_FEC_XXX*/ + break; + default: + // other modes are unsuported right now + cmd[0] = 0; + cmd[1] = 0; + cmd[2] = 0; + cmd[3] = 0; + cmd[8] = 0; + cmd[9] = 0; + break; + } + + gp8psk_usb_out_op(state->d,TUNE_8PSK,0,0,cmd,10); + + state->next_snr_check = jiffies; + + return 0; +} + +static int gp8psk_fe_get_frontend(struct dvb_frontend* fe, + struct dvb_frontend_parameters *fep) +{ + return 0; +} + + +static int gp8psk_fe_send_diseqc_msg (struct dvb_frontend* fe, + struct dvb_diseqc_master_cmd *m) +{ + struct gp8psk_fe_state *st = fe->demodulator_priv; + + deb_fe("%s\n",__FUNCTION__); + + if (gp8psk_usb_out_op(st->d,SEND_DISEQC_COMMAND, m->msg[0], 0, + m->msg, m->msg_len)) { + return -EINVAL; + } + return 0; +} + +static int gp8psk_fe_send_diseqc_burst (struct dvb_frontend* fe, + fe_sec_mini_cmd_t burst) +{ + struct gp8psk_fe_state *st = fe->demodulator_priv; + u8 cmd; + + deb_fe("%s\n",__FUNCTION__); + + /* These commands are certainly wrong */ + cmd = (burst == SEC_MINI_A) ? 0x00 : 0x01; + + if (gp8psk_usb_out_op(st->d,SEND_DISEQC_COMMAND, cmd, 0, + &cmd, 0)) { + return -EINVAL; + } + return 0; +} + +static int gp8psk_fe_set_tone (struct dvb_frontend* fe, fe_sec_tone_mode_t tone) +{ + struct gp8psk_fe_state* state = fe->demodulator_priv; + + if (gp8psk_usb_out_op(state->d,SET_22KHZ_TONE, + (tone == SEC_TONE_ON), 0, NULL, 0)) { + return -EINVAL; + } + return 0; +} + +static int gp8psk_fe_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t voltage) +{ + struct gp8psk_fe_state* state = fe->demodulator_priv; + + if (gp8psk_usb_out_op(state->d,SET_LNB_VOLTAGE, + voltage == SEC_VOLTAGE_18, 0, NULL, 0)) { + return -EINVAL; + } + return 0; +} + +static int gp8psk_fe_send_legacy_dish_cmd (struct dvb_frontend* fe, unsigned long sw_cmd) +{ + struct gp8psk_fe_state* state = fe->demodulator_priv; + u8 cmd = sw_cmd & 0x7f; + + if (gp8psk_usb_out_op(state->d,SET_DN_SWITCH, cmd, 0, + NULL, 0)) { + return -EINVAL; + } + if (gp8psk_usb_out_op(state->d,SET_LNB_VOLTAGE, !!(sw_cmd & 0x80), + 0, NULL, 0)) { + return -EINVAL; + } + + return 0; +} + +static void gp8psk_fe_release(struct dvb_frontend* fe) +{ + struct gp8psk_fe_state *state = fe->demodulator_priv; + kfree(state); +} + +static struct dvb_frontend_ops gp8psk_fe_ops; + +struct dvb_frontend * gp8psk_fe_attach(struct dvb_usb_device *d) +{ + struct gp8psk_fe_state *s = kzalloc(sizeof(struct gp8psk_fe_state), GFP_KERNEL); + if (s == NULL) + goto error; + + s->d = d; + memcpy(&s->fe.ops, &gp8psk_fe_ops, sizeof(struct dvb_frontend_ops)); + s->fe.demodulator_priv = s; + + goto success; +error: + return NULL; +success: + return &s->fe; +} + + +static struct dvb_frontend_ops gp8psk_fe_ops = { + .info = { + .name = "Genpix 8psk-USB DVB-S", + .type = FE_QPSK, + .frequency_min = 950000, + .frequency_max = 2150000, + .frequency_stepsize = 100, + .symbol_rate_min = 1000000, + .symbol_rate_max = 45000000, + .symbol_rate_tolerance = 500, /* ppm */ + .caps = FE_CAN_INVERSION_AUTO | + FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | + FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | + FE_CAN_QPSK + }, + + .release = gp8psk_fe_release, + + .init = NULL, + .sleep = NULL, + + .set_frontend = gp8psk_fe_set_frontend, + .get_frontend = gp8psk_fe_get_frontend, + .get_tune_settings = gp8psk_fe_get_tune_settings, + + .read_status = gp8psk_fe_read_status, + .read_ber = gp8psk_fe_read_ber, + .read_signal_strength = gp8psk_fe_read_signal_strength, + .read_snr = gp8psk_fe_read_snr, + .read_ucblocks = gp8psk_fe_read_unc_blocks, + + .diseqc_send_master_cmd = gp8psk_fe_send_diseqc_msg, + .diseqc_send_burst = gp8psk_fe_send_diseqc_burst, + .set_tone = gp8psk_fe_set_tone, + .set_voltage = gp8psk_fe_set_voltage, + .dishnetwork_send_legacy_command = gp8psk_fe_send_legacy_dish_cmd, +};