--- /dev/null
+/* Frontend part of the Linux driver for the WideView/ Yakumo/ Hama/
+ * Typhoon/ Yuan DVB-T USB2.0 receiver.
+ *
+ * Copyright (C) 2005 Patrick Boettcher <patrick.boettcher@desy.de>
+ *
+ * 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 "dtt200u.h"
+
+struct dtt200u_fe_state {
+ struct dvb_usb_device *d;
+
+ fe_status_t stat;
+
+ struct dvb_frontend_parameters fep;
+ struct dvb_frontend frontend;
+ struct dvb_frontend_ops ops;
+};
+
+static int dtt200u_fe_read_status(struct dvb_frontend* fe, fe_status_t *stat)
+{
+ struct dtt200u_fe_state *state = fe->demodulator_priv;
+ u8 st = GET_TUNE_STATUS, b[3];
+
+ dvb_usb_generic_rw(state->d,&st,1,b,3,0);
+
+ switch (b[0]) {
+ case 0x01:
+ *stat = FE_HAS_SIGNAL | FE_HAS_CARRIER |
+ FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
+ break;
+ case 0x00: /* pending */
+ *stat = FE_TIMEDOUT; /* during set_frontend */
+ break;
+ default:
+ case 0x02: /* failed */
+ *stat = 0;
+ break;
+ }
+ return 0;
+}
+
+static int dtt200u_fe_read_ber(struct dvb_frontend* fe, u32 *ber)
+{
+ struct dtt200u_fe_state *state = fe->demodulator_priv;
+ u8 bw = GET_VIT_ERR_CNT,b[3];
+ dvb_usb_generic_rw(state->d,&bw,1,b,3,0);
+ *ber = (b[0] << 16) | (b[1] << 8) | b[2];
+ return 0;
+}
+
+static int dtt200u_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
+{
+ struct dtt200u_fe_state *state = fe->demodulator_priv;
+ u8 bw = GET_RS_UNCOR_BLK_CNT,b[2];
+
+ dvb_usb_generic_rw(state->d,&bw,1,b,2,0);
+ *unc = (b[0] << 8) | b[1];
+ return 0;
+}
+
+static int dtt200u_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
+{
+ struct dtt200u_fe_state *state = fe->demodulator_priv;
+ u8 bw = GET_AGC, b;
+ dvb_usb_generic_rw(state->d,&bw,1,&b,1,0);
+ *strength = (b << 8) | b;
+ return 0;
+}
+
+static int dtt200u_fe_read_snr(struct dvb_frontend* fe, u16 *snr)
+{
+ struct dtt200u_fe_state *state = fe->demodulator_priv;
+ u8 bw = GET_SNR,br;
+ dvb_usb_generic_rw(state->d,&bw,1,&br,1,0);
+ *snr = ~((br << 8) | br);
+ return 0;
+}
+
+static int dtt200u_fe_init(struct dvb_frontend* fe)
+{
+ struct dtt200u_fe_state *state = fe->demodulator_priv;
+ u8 b = SET_INIT;
+ return dvb_usb_generic_write(state->d,&b,1);
+}
+
+static int dtt200u_fe_sleep(struct dvb_frontend* fe)
+{
+ return dtt200u_fe_init(fe);
+}
+
+static int dtt200u_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
+{
+ tune->min_delay_ms = 1500;
+ tune->step_size = 0;
+ tune->max_drift = 0;
+ return 0;
+}
+
+static int dtt200u_fe_set_frontend(struct dvb_frontend* fe,
+ struct dvb_frontend_parameters *fep)
+{
+ struct dtt200u_fe_state *state = fe->demodulator_priv;
+ int i;
+ fe_status_t st;
+ u16 freq = fep->frequency / 250000;
+ u8 bwbuf[2] = { SET_BANDWIDTH, 0 },freqbuf[3] = { SET_RF_FREQ, 0, 0 };
+
+ switch (fep->u.ofdm.bandwidth) {
+ case BANDWIDTH_8_MHZ: bwbuf[1] = 8; break;
+ case BANDWIDTH_7_MHZ: bwbuf[1] = 7; break;
+ case BANDWIDTH_6_MHZ: bwbuf[1] = 6; break;
+ case BANDWIDTH_AUTO: return -EOPNOTSUPP;
+ default:
+ return -EINVAL;
+ }
+
+ dvb_usb_generic_write(state->d,bwbuf,2);
+
+ freqbuf[1] = freq & 0xff;
+ freqbuf[2] = (freq >> 8) & 0xff;
+ dvb_usb_generic_write(state->d,freqbuf,3);
+
+ for (i = 0; i < 30; i++) {
+ msleep(20);
+ dtt200u_fe_read_status(fe, &st);
+ if (st & FE_TIMEDOUT)
+ continue;
+ }
+
+ return 0;
+}
+
+static int dtt200u_fe_get_frontend(struct dvb_frontend* fe,
+ struct dvb_frontend_parameters *fep)
+{
+ struct dtt200u_fe_state *state = fe->demodulator_priv;
+ memcpy(fep,&state->fep,sizeof(struct dvb_frontend_parameters));
+ return 0;
+}
+
+static void dtt200u_fe_release(struct dvb_frontend* fe)
+{
+ struct dtt200u_fe_state *state = (struct dtt200u_fe_state*) fe->demodulator_priv;
+ kfree(state);
+}
+
+static struct dvb_frontend_ops dtt200u_fe_ops;
+
+struct dvb_frontend* dtt200u_fe_attach(struct dvb_usb_device *d)
+{
+ struct dtt200u_fe_state* state = NULL;
+
+ /* allocate memory for the internal state */
+ state = kzalloc(sizeof(struct dtt200u_fe_state), GFP_KERNEL);
+ if (state == NULL)
+ goto error;
+
+ deb_info("attaching frontend dtt200u\n");
+
+ state->d = d;
+ memcpy(&state->ops,&dtt200u_fe_ops,sizeof(struct dvb_frontend_ops));
+
+ state->frontend.ops = &state->ops;
+ state->frontend.demodulator_priv = state;
+
+ goto success;
+error:
+ return NULL;
+success:
+ return &state->frontend;
+}
+
+static struct dvb_frontend_ops dtt200u_fe_ops = {
+ .info = {
+ .name = "WideView USB DVB-T",
+ .type = FE_OFDM,
+ .frequency_min = 44250000,
+ .frequency_max = 867250000,
+ .frequency_stepsize = 250000,
+ .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 | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
+ FE_CAN_TRANSMISSION_MODE_AUTO |
+ FE_CAN_GUARD_INTERVAL_AUTO |
+ FE_CAN_RECOVER |
+ FE_CAN_HIERARCHY_AUTO,
+ },
+
+ .release = dtt200u_fe_release,
+
+ .init = dtt200u_fe_init,
+ .sleep = dtt200u_fe_sleep,
+
+ .set_frontend = dtt200u_fe_set_frontend,
+ .get_frontend = dtt200u_fe_get_frontend,
+ .get_tune_settings = dtt200u_fe_get_tune_settings,
+
+ .read_status = dtt200u_fe_read_status,
+ .read_ber = dtt200u_fe_read_ber,
+ .read_signal_strength = dtt200u_fe_read_signal_strength,
+ .read_snr = dtt200u_fe_read_snr,
+ .read_ucblocks = dtt200u_fe_read_unc_blocks,
+};
git://git.onelab.eu / linux-2.6.git / blobdiff