[linux-2.6-block.git] / drivers / media / usb / dvb-usb / vp7045-fe.c

/* DVB frontend part of the Linux driver for TwinhanDTV Alpha/MagicBoxII USB2.0
 * DVB-T receiver.
 *
 * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@posteo.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_usb_device *d;
};

static int vp7045_fe_read_status(struct dvb_frontend *fe,
				 enum fe_status *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 dtv_frontend_properties *fep = &fe->dtv_property_cache;
	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->bandwidth_hz) {
	case 8000000:
		buf[4] = 8;
		break;
	case 7000000:
		buf[4] = 7;
		break;
	case 6000000:
		buf[4] = 6;
		break;
	default:
		return -EINVAL;
	}

	vp7045_usb_op(state->d,LOCK_TUNER_COMMAND,buf,5,NULL,0,200);
	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->fe.ops, &vp7045_fe_ops, sizeof(struct dvb_frontend_ops));
	s->fe.demodulator_priv = s;

	return &s->fe;
error:
	return NULL;
}


static struct dvb_frontend_ops vp7045_fe_ops = {
	.delsys = { SYS_DVBT },
	.info = {
		.name			= "Twinhan VP7045/46 USB DVB-T",
		.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_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,
};
Commit	Line	Data
776338e1 JS	1	/* DVB frontend part of the Linux driver for TwinhanDTV Alpha/MagicBoxII USB2.0
	2	* DVB-T receiver.
	3	*
99e44da7	4	* Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@posteo.de)
776338e1 JS	5	*
	6	* Thanks to Twinhan who kindly provided hardware and information.
	7	*
	8	* This program is free software; you can redistribute it and/or modify it
	9	* under the terms of the GNU General Public License as published by the Free
	10	* Software Foundation, version 2.
	11	*
	12	* see Documentation/dvb/README.dvb-usb for more information
	13	*
	14	*/
	15	#include "vp7045.h"
	16
	17	/* It is a Zarlink MT352 within a Samsung Tuner (DNOS404ZH102A) - 040929 - AAT
	18	*
	19	* Programming is hidden inside the firmware, so set_frontend is very easy.
	20	* Even though there is a Firmware command that one can use to access the demod
	21	* via its registers. This is used for status information.
	22	*/
	23
	24	struct vp7045_fe_state {
	25	struct dvb_frontend fe;
	26	struct dvb_usb_device *d;
	27	};
	28
0df289a2 MCC	29	static int vp7045_fe_read_status(struct dvb_frontend *fe,
0df289a2 MCC	30	enum fe_status *status)
776338e1 JS	31	{
	32	struct vp7045_fe_state *state = fe->demodulator_priv;
	33	u8 s0 = vp7045_read_reg(state->d,0x00),
	34	s1 = vp7045_read_reg(state->d,0x01),
	35	s3 = vp7045_read_reg(state->d,0x03);
	36
	37	*status = 0;
	38	if (s0 & (1 << 4))
	39	*status \|= FE_HAS_CARRIER;
	40	if (s0 & (1 << 1))
	41	*status \|= FE_HAS_VITERBI;
	42	if (s0 & (1 << 5))
	43	*status \|= FE_HAS_LOCK;
	44	if (s1 & (1 << 1))
	45	*status \|= FE_HAS_SYNC;
	46	if (s3 & (1 << 6))
	47	*status \|= FE_HAS_SIGNAL;
	48
	49	if ((*status & (FE_HAS_CARRIER \| FE_HAS_VITERBI \| FE_HAS_SYNC)) !=
	50	(FE_HAS_CARRIER \| FE_HAS_VITERBI \| FE_HAS_SYNC))
	51	*status &= ~FE_HAS_LOCK;
	52
	53	return 0;
	54	}
	55
	56	static int vp7045_fe_read_ber(struct dvb_frontend* fe, u32 *ber)
	57	{
	58	struct vp7045_fe_state *state = fe->demodulator_priv;
	59	*ber = (vp7045_read_reg(state->d, 0x0D) << 16) \|
	60	(vp7045_read_reg(state->d, 0x0E) << 8) \|
9101e622	61	vp7045_read_reg(state->d, 0x0F);
776338e1 JS	62	return 0;
	63	}
	64
	65	static int vp7045_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
	66	{
	67	struct vp7045_fe_state *state = fe->demodulator_priv;
	68	*unc = (vp7045_read_reg(state->d, 0x10) << 8) \|
	69	vp7045_read_reg(state->d, 0x11);
	70	return 0;
	71	}
	72
	73	static int vp7045_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
	74	{
	75	struct vp7045_fe_state *state = fe->demodulator_priv;
	76	u16 signal = (vp7045_read_reg(state->d, 0x14) << 8) \|
	77	vp7045_read_reg(state->d, 0x15);
	78
	79	*strength = ~signal;
	80	return 0;
	81	}
	82
	83	static int vp7045_fe_read_snr(struct dvb_frontend* fe, u16 *snr)
	84	{
	85	struct vp7045_fe_state *state = fe->demodulator_priv;
	86	u8 _snr = vp7045_read_reg(state->d, 0x09);
	87	*snr = (_snr << 8) \| _snr;
	88	return 0;
	89	}
	90
	91	static int vp7045_fe_init(struct dvb_frontend* fe)
	92	{
	93	return 0;
	94	}
	95
	96	static int vp7045_fe_sleep(struct dvb_frontend* fe)
	97	{
	98	return 0;
	99	}
	100
	101	static int vp7045_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
	102	{
	103	tune->min_delay_ms = 800;
	104	return 0;
	105	}
	106
e4b40030	107	static int vp7045_fe_set_frontend(struct dvb_frontend *fe)
776338e1	108	{
e4b40030	109	struct dtv_frontend_properties *fep = &fe->dtv_property_cache;
776338e1 JS	110	struct vp7045_fe_state *state = fe->demodulator_priv;
	111	u8 buf[5];
	112	u32 freq = fep->frequency / 1000;
	113
	114	buf[0] = (freq >> 16) & 0xff;
	115	buf[1] = (freq >> 8) & 0xff;
	116	buf[2] = freq & 0xff;
	117	buf[3] = 0;
	118
e4b40030 MCC	119	switch (fep->bandwidth_hz) {
	120	case 8000000:
	121	buf[4] = 8;
	122	break;
	123	case 7000000:
	124	buf[4] = 7;
	125	break;
	126	case 6000000:
	127	buf[4] = 6;
	128	break;
	129	default:
	130	return -EINVAL;
776338e1 JS	131	}
	132
	133	vp7045_usb_op(state->d,LOCK_TUNER_COMMAND,buf,5,NULL,0,200);
	134	return 0;
	135	}
	136
776338e1 JS	137	static void vp7045_fe_release(struct dvb_frontend* fe)
	138	{
	139	struct vp7045_fe_state *state = fe->demodulator_priv;
	140	kfree(state);
	141	}
	142
	143	static struct dvb_frontend_ops vp7045_fe_ops;
	144
	145	struct dvb_frontend * vp7045_fe_attach(struct dvb_usb_device *d)
	146	{
7408187d	147	struct vp7045_fe_state *s = kzalloc(sizeof(struct vp7045_fe_state), GFP_KERNEL);
776338e1 JS	148	if (s == NULL)
776338e1 JS	149	goto error;
776338e1 JS	150
776338e1 JS	151	s->d = d;
dea74869	152	memcpy(&s->fe.ops, &vp7045_fe_ops, sizeof(struct dvb_frontend_ops));
776338e1 JS	153	s->fe.demodulator_priv = s;
776338e1 JS	154
8397703e	155	return &s->fe;
776338e1 JS	156	error:
776338e1 JS	157	return NULL;
776338e1 JS	158	}
	159
	160
	161	static struct dvb_frontend_ops vp7045_fe_ops = {
e4b40030	162	.delsys = { SYS_DVBT },
776338e1 JS	163	.info = {
776338e1 JS	164	.name = "Twinhan VP7045/46 USB DVB-T",
776338e1 JS	165	.frequency_min = 44250000,
	166	.frequency_max = 867250000,
	167	.frequency_stepsize = 1000,
	168	.caps = FE_CAN_INVERSION_AUTO \|
	169	FE_CAN_FEC_1_2 \| FE_CAN_FEC_2_3 \| FE_CAN_FEC_3_4 \|
	170	FE_CAN_FEC_5_6 \| FE_CAN_FEC_7_8 \| FE_CAN_FEC_AUTO \|
	171	FE_CAN_QPSK \| FE_CAN_QAM_16 \| FE_CAN_QAM_64 \| FE_CAN_QAM_AUTO \|
	172	FE_CAN_TRANSMISSION_MODE_AUTO \|
	173	FE_CAN_GUARD_INTERVAL_AUTO \|
	174	FE_CAN_RECOVER \|
	175	FE_CAN_HIERARCHY_AUTO,
	176	},
	177
	178	.release = vp7045_fe_release,
	179
	180	.init = vp7045_fe_init,
	181	.sleep = vp7045_fe_sleep,
	182
e4b40030	183	.set_frontend = vp7045_fe_set_frontend,
776338e1 JS	184	.get_tune_settings = vp7045_fe_get_tune_settings,
	185
	186	.read_status = vp7045_fe_read_status,
	187	.read_ber = vp7045_fe_read_ber,
	188	.read_signal_strength = vp7045_fe_read_signal_strength,
	189	.read_snr = vp7045_fe_read_snr,
	190	.read_ucblocks = vp7045_fe_read_unc_blocks,
	191	};