[deliverable/linux.git] / drivers / media / usb / dvb-usb / dtt200u-fe.c

/* 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 dtv_frontend_properties 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 dtv_frontend_properties *fep = &fe->dtv_property_cache;
	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->bandwidth_hz) {
	case 8000000:
		bwbuf[1] = 8;
		break;
	case 7000000:
		bwbuf[1] = 7;
		break;
	case 6000000:
		bwbuf[1] = 6;
		break;
	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 dtv_frontend_properties *fep = &fe->dtv_property_cache;
	struct dtt200u_fe_state *state = fe->demodulator_priv;
	memcpy(fep, &state->fep, sizeof(struct dtv_frontend_properties));
	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->frontend.ops,&dtt200u_fe_ops,sizeof(struct dvb_frontend_ops));
	state->frontend.demodulator_priv = state;

	return &state->frontend;
error:
	return NULL;
}

static struct dvb_frontend_ops dtt200u_fe_ops = {
	.delsys = { SYS_DVBT },
	.info = {
		.name			= "WideView USB DVB-T",
		.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,
};
Commit	Line	Data
fb41f5a7 PB	1	/* Frontend part of the Linux driver for the WideView/ Yakumo/ Hama/
fb41f5a7 PB	2	* Typhoon/ Yuan DVB-T USB2.0 receiver.
776338e1 JS	3	*
	4	* Copyright (C) 2005 Patrick Boettcher <patrick.boettcher@desy.de>
	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License as published by the Free
	8	* Software Foundation, version 2.
	9	*
	10	* see Documentation/dvb/README.dvb-usb for more information
	11	*/
	12	#include "dtt200u.h"
	13
	14	struct dtt200u_fe_state {
	15	struct dvb_usb_device *d;
	16
d590f9c2 PB	17	fe_status_t stat;
d590f9c2 PB	18
adcc8f0e	19	struct dtv_frontend_properties fep;
776338e1 JS	20	struct dvb_frontend frontend;
	21	};
	22
776338e1 JS	23	static int dtt200u_fe_read_status(struct dvb_frontend* fe, fe_status_t *stat)
	24	{
	25	struct dtt200u_fe_state *state = fe->demodulator_priv;
d590f9c2 PB	26	u8 st = GET_TUNE_STATUS, b[3];
	27
	28	dvb_usb_generic_rw(state->d,&st,1,b,3,0);
776338e1	29
d590f9c2	30	switch (b[0]) {
776338e1	31	case 0x01:
d590f9c2 PB	32	*stat = FE_HAS_SIGNAL \| FE_HAS_CARRIER \|
d590f9c2 PB	33	FE_HAS_VITERBI \| FE_HAS_SYNC \| FE_HAS_LOCK;
776338e1	34	break;
d590f9c2 PB	35	case 0x00: /* pending */
d590f9c2 PB	36	stat = FE_TIMEDOUT; / during set_frontend */
776338e1 JS	37	break;
776338e1 JS	38	default:
d590f9c2 PB	39	case 0x02: /* failed */
d590f9c2 PB	40	*stat = 0;
776338e1 JS	41	break;
776338e1 JS	42	}
776338e1 JS	43	return 0;
776338e1 JS	44	}
d590f9c2	45
776338e1 JS	46	static int dtt200u_fe_read_ber(struct dvb_frontend* fe, u32 *ber)
	47	{
	48	struct dtt200u_fe_state *state = fe->demodulator_priv;
d590f9c2 PB	49	u8 bw = GET_VIT_ERR_CNT,b[3];
	50	dvb_usb_generic_rw(state->d,&bw,1,b,3,0);
	51	*ber = (b[0] << 16) \| (b[1] << 8) \| b[2];
776338e1 JS	52	return 0;
	53	}
	54
	55	static int dtt200u_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
	56	{
	57	struct dtt200u_fe_state *state = fe->demodulator_priv;
d590f9c2 PB	58	u8 bw = GET_RS_UNCOR_BLK_CNT,b[2];
	59
	60	dvb_usb_generic_rw(state->d,&bw,1,b,2,0);
	61	*unc = (b[0] << 8) \| b[1];
776338e1 JS	62	return 0;
	63	}
	64
	65	static int dtt200u_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
	66	{
	67	struct dtt200u_fe_state *state = fe->demodulator_priv;
d590f9c2	68	u8 bw = GET_AGC, b;
776338e1 JS	69	dvb_usb_generic_rw(state->d,&bw,1,&b,1,0);
	70	*strength = (b << 8) \| b;
	71	return 0;
	72	}
	73
	74	static int dtt200u_fe_read_snr(struct dvb_frontend* fe, u16 *snr)
	75	{
	76	struct dtt200u_fe_state *state = fe->demodulator_priv;
	77	u8 bw = GET_SNR,br;
	78	dvb_usb_generic_rw(state->d,&bw,1,&br,1,0);
	79	*snr = ~((br << 8) \| br);
	80	return 0;
	81	}
	82
	83	static int dtt200u_fe_init(struct dvb_frontend* fe)
	84	{
	85	struct dtt200u_fe_state *state = fe->demodulator_priv;
d590f9c2	86	u8 b = SET_INIT;
776338e1 JS	87	return dvb_usb_generic_write(state->d,&b,1);
	88	}
	89
	90	static int dtt200u_fe_sleep(struct dvb_frontend* fe)
	91	{
	92	return dtt200u_fe_init(fe);
	93	}
	94
	95	static int dtt200u_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
	96	{
	97	tune->min_delay_ms = 1500;
d590f9c2 PB	98	tune->step_size = 0;
d590f9c2 PB	99	tune->max_drift = 0;
776338e1 JS	100	return 0;
	101	}
	102
adcc8f0e	103	static int dtt200u_fe_set_frontend(struct dvb_frontend *fe)
776338e1	104	{
adcc8f0e	105	struct dtv_frontend_properties *fep = &fe->dtv_property_cache;
776338e1	106	struct dtt200u_fe_state *state = fe->demodulator_priv;
d590f9c2 PB	107	int i;
d590f9c2 PB	108	fe_status_t st;
776338e1	109	u16 freq = fep->frequency / 250000;
d590f9c2	110	u8 bwbuf[2] = { SET_BANDWIDTH, 0 },freqbuf[3] = { SET_RF_FREQ, 0, 0 };
776338e1	111
adcc8f0e MCC	112	switch (fep->bandwidth_hz) {
	113	case 8000000:
	114	bwbuf[1] = 8;
	115	break;
	116	case 7000000:
	117	bwbuf[1] = 7;
	118	break;
	119	case 6000000:
	120	bwbuf[1] = 6;
	121	break;
	122	default:
	123	return -EINVAL;
776338e1	124	}
776338e1	125
776338e1 JS	126	dvb_usb_generic_write(state->d,bwbuf,2);
	127
	128	freqbuf[1] = freq & 0xff;
	129	freqbuf[2] = (freq >> 8) & 0xff;
	130	dvb_usb_generic_write(state->d,freqbuf,3);
	131
d590f9c2 PB	132	for (i = 0; i < 30; i++) {
	133	msleep(20);
	134	dtt200u_fe_read_status(fe, &st);
	135	if (st & FE_TIMEDOUT)
	136	continue;
	137	}
776338e1 JS	138
	139	return 0;
	140	}
	141
7c61d80a	142	static int dtt200u_fe_get_frontend(struct dvb_frontend* fe)
776338e1	143	{
7c61d80a	144	struct dtv_frontend_properties *fep = &fe->dtv_property_cache;
776338e1	145	struct dtt200u_fe_state *state = fe->demodulator_priv;
adcc8f0e	146	memcpy(fep, &state->fep, sizeof(struct dtv_frontend_properties));
776338e1 JS	147	return 0;
	148	}
	149
	150	static void dtt200u_fe_release(struct dvb_frontend* fe)
	151	{
	152	struct dtt200u_fe_state state = (struct dtt200u_fe_state) fe->demodulator_priv;
	153	kfree(state);
	154	}
	155
	156	static struct dvb_frontend_ops dtt200u_fe_ops;
	157
	158	struct dvb_frontend* dtt200u_fe_attach(struct dvb_usb_device *d)
	159	{
	160	struct dtt200u_fe_state* state = NULL;
	161
	162	/* allocate memory for the internal state */
7408187d	163	state = kzalloc(sizeof(struct dtt200u_fe_state), GFP_KERNEL);
776338e1 JS	164	if (state == NULL)
776338e1 JS	165	goto error;
776338e1 JS	166
	167	deb_info("attaching frontend dtt200u\n");
	168
	169	state->d = d;
	170
dea74869	171	memcpy(&state->frontend.ops,&dtt200u_fe_ops,sizeof(struct dvb_frontend_ops));
776338e1 JS	172	state->frontend.demodulator_priv = state;
776338e1 JS	173
8397703e	174	return &state->frontend;
776338e1 JS	175	error:
776338e1 JS	176	return NULL;
776338e1 JS	177	}
	178
	179	static struct dvb_frontend_ops dtt200u_fe_ops = {
adcc8f0e	180	.delsys = { SYS_DVBT },
776338e1	181	.info = {
d590f9c2	182	.name = "WideView USB DVB-T",
776338e1 JS	183	.frequency_min = 44250000,
	184	.frequency_max = 867250000,
	185	.frequency_stepsize = 250000,
	186	.caps = FE_CAN_INVERSION_AUTO \|
	187	FE_CAN_FEC_1_2 \| FE_CAN_FEC_2_3 \| FE_CAN_FEC_3_4 \|
	188	FE_CAN_FEC_5_6 \| FE_CAN_FEC_7_8 \| FE_CAN_FEC_AUTO \|
	189	FE_CAN_QPSK \| FE_CAN_QAM_16 \| FE_CAN_QAM_64 \| FE_CAN_QAM_AUTO \|
	190	FE_CAN_TRANSMISSION_MODE_AUTO \|
	191	FE_CAN_GUARD_INTERVAL_AUTO \|
	192	FE_CAN_RECOVER \|
	193	FE_CAN_HIERARCHY_AUTO,
	194	},
	195
	196	.release = dtt200u_fe_release,
	197
	198	.init = dtt200u_fe_init,
	199	.sleep = dtt200u_fe_sleep,
	200
adcc8f0e MCC	201	.set_frontend = dtt200u_fe_set_frontend,
adcc8f0e MCC	202	.get_frontend = dtt200u_fe_get_frontend,
776338e1 JS	203	.get_tune_settings = dtt200u_fe_get_tune_settings,
	204
	205	.read_status = dtt200u_fe_read_status,
	206	.read_ber = dtt200u_fe_read_ber,
	207	.read_signal_strength = dtt200u_fe_read_signal_strength,
	208	.read_snr = dtt200u_fe_read_snr,
	209	.read_ucblocks = dtt200u_fe_read_unc_blocks,
	210	};