Merge /spare/repo/linux-2.6/

1 files changed, 208 insertions, 0 deletions

diff --git a/drivers/media/dvb/dvb-usb/dtt200u-fe.c b/drivers/media/dvb/dvb-usb/dtt200u-fe.c
new file mode 100644
index 000000000000..b032523b07bc
--- /dev/null
+++ b/drivers/media/dvb/dvb-usb/dtt200u-fe.c
@@ -0,0 +1,208 @@
+/* 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;
+};
+
+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 = (struct dtt200u_fe_state*) kmalloc(sizeof(struct dtt200u_fe_state), GFP_KERNEL);
+	if (state == NULL)
+		goto error;
+	memset(state,0,sizeof(struct dtt200u_fe_state));
+
+	deb_info("attaching frontend dtt200u\n");
+
+	state->d = d;
+
+	state->frontend.ops = &dtt200u_fe_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,
+};