--- /dev/null
+/* DVB frontend part of the Linux driver for TwinhanDTV Alpha/MagicBoxII USB2.0
+ * DVB-T receiver.
+ *
+ * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de)
+ *
+ * Thanks to Twinhan who kindly provided hardware and information.
+ *
+ * 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 "vp7045.h"
+
+/* It is a Zarlink MT352 within a Samsung Tuner (DNOS404ZH102A) - 040929 - AAT
+ *
+ * Programming is hidden inside the firmware, so set_frontend is very easy.
+ * Even though there is a Firmware command that one can use to access the demod
+ * via its registers. This is used for status information.
+ */
+
+struct vp7045_fe_state {
+ struct dvb_frontend fe;
+ struct dvb_frontend_ops ops;
+
+ struct dvb_usb_device *d;
+};
+
+static int vp7045_fe_read_status(struct dvb_frontend* fe, fe_status_t *status)
+{
+ struct vp7045_fe_state *state = fe->demodulator_priv;
+ u8 s0 = vp7045_read_reg(state->d,0x00),
+ s1 = vp7045_read_reg(state->d,0x01),
+ s3 = vp7045_read_reg(state->d,0x03);
+
+ *status = 0;
+ if (s0 & (1 << 4))
+ *status |= FE_HAS_CARRIER;
+ if (s0 & (1 << 1))
+ *status |= FE_HAS_VITERBI;
+ if (s0 & (1 << 5))
+ *status |= FE_HAS_LOCK;
+ if (s1 & (1 << 1))
+ *status |= FE_HAS_SYNC;
+ if (s3 & (1 << 6))
+ *status |= FE_HAS_SIGNAL;
+
+ if ((*status & (FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC)) !=
+ (FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC))
+ *status &= ~FE_HAS_LOCK;
+
+ return 0;
+}
+
+static int vp7045_fe_read_ber(struct dvb_frontend* fe, u32 *ber)
+{
+ struct vp7045_fe_state *state = fe->demodulator_priv;
+ *ber = (vp7045_read_reg(state->d, 0x0D) << 16) |
+ (vp7045_read_reg(state->d, 0x0E) << 8) |
+ vp7045_read_reg(state->d, 0x0F);
+ return 0;
+}
+
+static int vp7045_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
+{
+ struct vp7045_fe_state *state = fe->demodulator_priv;
+ *unc = (vp7045_read_reg(state->d, 0x10) << 8) |
+ vp7045_read_reg(state->d, 0x11);
+ return 0;
+}
+
+static int vp7045_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
+{
+ struct vp7045_fe_state *state = fe->demodulator_priv;
+ u16 signal = (vp7045_read_reg(state->d, 0x14) << 8) |
+ vp7045_read_reg(state->d, 0x15);
+
+ *strength = ~signal;
+ return 0;
+}
+
+static int vp7045_fe_read_snr(struct dvb_frontend* fe, u16 *snr)
+{
+ struct vp7045_fe_state *state = fe->demodulator_priv;
+ u8 _snr = vp7045_read_reg(state->d, 0x09);
+ *snr = (_snr << 8) | _snr;
+ return 0;
+}
+
+static int vp7045_fe_init(struct dvb_frontend* fe)
+{
+ return 0;
+}
+
+static int vp7045_fe_sleep(struct dvb_frontend* fe)
+{
+ return 0;
+}
+
+static int vp7045_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
+{
+ tune->min_delay_ms = 800;
+ return 0;
+}
+
+static int vp7045_fe_set_frontend(struct dvb_frontend* fe,
+ struct dvb_frontend_parameters *fep)
+{
+ struct vp7045_fe_state *state = fe->demodulator_priv;
+ u8 buf[5];
+ u32 freq = fep->frequency / 1000;
+
+ buf[0] = (freq >> 16) & 0xff;
+ buf[1] = (freq >> 8) & 0xff;
+ buf[2] = freq & 0xff;
+ buf[3] = 0;
+
+ switch (fep->u.ofdm.bandwidth) {
+ case BANDWIDTH_8_MHZ: buf[4] = 8; break;
+ case BANDWIDTH_7_MHZ: buf[4] = 7; break;
+ case BANDWIDTH_6_MHZ: buf[4] = 6; break;
+ case BANDWIDTH_AUTO: return -EOPNOTSUPP;
+ default:
+ return -EINVAL;
+ }
+
+ vp7045_usb_op(state->d,LOCK_TUNER_COMMAND,buf,5,NULL,0,200);
+ return 0;
+}
+
+static int vp7045_fe_get_frontend(struct dvb_frontend* fe,
+ struct dvb_frontend_parameters *fep)
+{
+ return 0;
+}
+
+static void vp7045_fe_release(struct dvb_frontend* fe)
+{
+ struct vp7045_fe_state *state = fe->demodulator_priv;
+ kfree(state);
+}
+
+static struct dvb_frontend_ops vp7045_fe_ops;
+
+struct dvb_frontend * vp7045_fe_attach(struct dvb_usb_device *d)
+{
+ struct vp7045_fe_state *s = kzalloc(sizeof(struct vp7045_fe_state), GFP_KERNEL);
+ if (s == NULL)
+ goto error;
+
+ s->d = d;
+ memcpy(&s->ops, &vp7045_fe_ops, sizeof(struct dvb_frontend_ops));
+ s->fe.ops = &s->ops;
+ s->fe.demodulator_priv = s;
+
+ goto success;
+error:
+ return NULL;
+success:
+ return &s->fe;
+}
+
+
+static struct dvb_frontend_ops vp7045_fe_ops = {
+ .info = {
+ .name = "Twinhan VP7045/46 USB DVB-T",
+ .type = FE_OFDM,
+ .frequency_min = 44250000,
+ .frequency_max = 867250000,
+ .frequency_stepsize = 1000,
+ .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 = vp7045_fe_release,
+
+ .init = vp7045_fe_init,
+ .sleep = vp7045_fe_sleep,
+
+ .set_frontend = vp7045_fe_set_frontend,
+ .get_frontend = vp7045_fe_get_frontend,
+ .get_tune_settings = vp7045_fe_get_tune_settings,
+
+ .read_status = vp7045_fe_read_status,
+ .read_ber = vp7045_fe_read_ber,
+ .read_signal_strength = vp7045_fe_read_signal_strength,
+ .read_snr = vp7045_fe_read_snr,
+ .read_ucblocks = vp7045_fe_read_unc_blocks,
+};
git://git.onelab.eu / linux-2.6.git / blobdiff