[linux-2.6-block.git] / drivers / media / dvb / dvb-usb / vp702x-fe.c

/* DVB frontend part of the Linux driver for the TwinhanDTV StarBox USB2.0
 * DVB-S receiver.
 *
 * Copyright (C) 2005 Ralph Metzler <rjkm@metzlerbros.de>
 *                    Metzler Brothers Systementwicklung GbR
 *
 * Copyright (C) 2005 Patrick Boettcher <patrick.boettcher@desy.de>
 *
 * Thanks to Twinhan who kindly provided hardware and information.
 *
 * This file can be removed soon, after the DST-driver is rewritten to provice
 * the frontend-controlling separately.
 *
 *	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 "vp702x.h"

struct vp702x_fe_state {
	struct dvb_frontend fe;
	struct dvb_usb_device *d;

	struct dvb_frontend_ops ops;

	fe_sec_voltage_t voltage;
	fe_sec_tone_mode_t tone_mode;

	u8 lnb_buf[8];

	u8 lock;
	u8 sig;
	u8 snr;

	unsigned long next_status_check;
	unsigned long status_check_interval;
};

static int vp702x_fe_refresh_state(struct vp702x_fe_state *st)
{
	u8 *buf;

	if (time_after(jiffies, st->next_status_check)) {
		buf = kmalloc(10, GFP_KERNEL);
		if (!buf) {
			deb_fe("%s: buffer alloc failed\n", __func__);
			return -ENOMEM;
		}
		vp702x_usb_in_op(st->d, READ_STATUS, 0, 0, buf, 10);
		st->lock = buf[4];

		vp702x_usb_in_op(st->d, READ_TUNER_REG_REQ, 0x11, 0, buf, 1);
		st->snr = buf[0];

		vp702x_usb_in_op(st->d, READ_TUNER_REG_REQ, 0x15, 0, buf, 1);
		st->sig = buf[0];


		st->next_status_check = jiffies + (st->status_check_interval*HZ)/1000;
		kfree(buf);
	}
	return 0;
}

static u8 vp702x_chksum(u8 *buf,int f, int count)
{
	u8 s = 0;
	int i;
	for (i = f; i < f+count; i++)
		s += buf[i];
	return ~s+1;
}

static int vp702x_fe_read_status(struct dvb_frontend* fe, fe_status_t *status)
{
	struct vp702x_fe_state *st = fe->demodulator_priv;
	vp702x_fe_refresh_state(st);
	deb_fe("%s\n",__func__);

	if (st->lock == 0)
		*status = FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI | FE_HAS_SIGNAL | FE_HAS_CARRIER;
	else
		*status = 0;

	if (*status & FE_HAS_LOCK)
		st->status_check_interval = 1000;
	else
		st->status_check_interval = 250;
	return 0;
}

/* not supported by this Frontend */
static int vp702x_fe_read_ber(struct dvb_frontend* fe, u32 *ber)
{
	struct vp702x_fe_state *st = fe->demodulator_priv;
	vp702x_fe_refresh_state(st);
	*ber = 0;
	return 0;
}

/* not supported by this Frontend */
static int vp702x_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
{
	struct vp702x_fe_state *st = fe->demodulator_priv;
	vp702x_fe_refresh_state(st);
	*unc = 0;
	return 0;
}

static int vp702x_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
{
	struct vp702x_fe_state *st = fe->demodulator_priv;
	vp702x_fe_refresh_state(st);

	*strength = (st->sig << 8) | st->sig;
	return 0;
}

static int vp702x_fe_read_snr(struct dvb_frontend* fe, u16 *snr)
{
	u8 _snr;
	struct vp702x_fe_state *st = fe->demodulator_priv;
	vp702x_fe_refresh_state(st);

	_snr = (st->snr & 0x1f) * 0xff / 0x1f;
	*snr = (_snr << 8) | _snr;
	return 0;
}

static int vp702x_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
{
	deb_fe("%s\n",__func__);
	tune->min_delay_ms = 2000;
	return 0;
}

static int vp702x_fe_set_frontend(struct dvb_frontend* fe,
				  struct dvb_frontend_parameters *fep)
{
	struct vp702x_fe_state *st = fe->demodulator_priv;
	u32 freq = fep->frequency/1000;
	/*CalFrequency*/
/*	u16 frequencyRef[16] = { 2, 4, 8, 16, 32, 64, 128, 256, 24, 5, 10, 20, 40, 80, 160, 320 }; */
	u64 sr;
	u8 *cmd;

	cmd = kzalloc(10, GFP_KERNEL);
	if (!cmd)
		return -ENOMEM;

	cmd[0] = (freq >> 8) & 0x7f;
	cmd[1] =  freq       & 0xff;
	cmd[2] = 1; /* divrate == 4 -> frequencyRef[1] -> 1 here */

	sr = (u64) (fep->u.qpsk.symbol_rate/1000) << 20;
	do_div(sr,88000);
	cmd[3] = (sr >> 12) & 0xff;
	cmd[4] = (sr >> 4)  & 0xff;
	cmd[5] = (sr << 4)  & 0xf0;

	deb_fe("setting frontend to: %u -> %u (%x) LNB-based GHz, symbolrate: %d -> %lu (%lx)\n",
			fep->frequency,freq,freq, fep->u.qpsk.symbol_rate,
			(unsigned long) sr, (unsigned long) sr);

/*	if (fep->inversion == INVERSION_ON)
		cmd[6] |= 0x80; */

	if (st->voltage == SEC_VOLTAGE_18)
		cmd[6] |= 0x40;

/*	if (fep->u.qpsk.symbol_rate > 8000000)
		cmd[6] |= 0x20;

	if (fep->frequency < 1531000)
		cmd[6] |= 0x04;

	if (st->tone_mode == SEC_TONE_ON)
		cmd[6] |= 0x01;*/

	cmd[7] = vp702x_chksum(cmd,0,7);

	st->status_check_interval = 250;
	st->next_status_check = jiffies;

	vp702x_usb_inout_op(st->d, cmd, 8, cmd, 10, 100);

	if (cmd[2] == 0 && cmd[3] == 0)
		deb_fe("tuning failed.\n");
	else
		deb_fe("tuning succeeded.\n");

	kfree(cmd);
	return 0;
}

static int vp702x_fe_init(struct dvb_frontend *fe)
{
	struct vp702x_fe_state *st = fe->demodulator_priv;
	deb_fe("%s\n",__func__);
	vp702x_usb_in_op(st->d, RESET_TUNER, 0, 0, NULL, 0);
	return 0;
}

static int vp702x_fe_sleep(struct dvb_frontend *fe)
{
	deb_fe("%s\n",__func__);
	return 0;
}

static int vp702x_fe_get_frontend(struct dvb_frontend* fe,
				  struct dvb_frontend_parameters *fep)
{
	deb_fe("%s\n",__func__);
	return 0;
}

static int vp702x_fe_send_diseqc_msg (struct dvb_frontend* fe,
				    struct dvb_diseqc_master_cmd *m)
{
	int ret;
	u8 *cmd;
	struct vp702x_fe_state *st = fe->demodulator_priv;

	cmd = kzalloc(10, GFP_KERNEL);
	if (!cmd)
		return -ENOMEM;

	deb_fe("%s\n",__func__);

	if (m->msg_len > 4) {
		ret = -EINVAL;
		goto out;
	}

	cmd[1] = SET_DISEQC_CMD;
	cmd[2] = m->msg_len;
	memcpy(&cmd[3], m->msg, m->msg_len);
	cmd[7] = vp702x_chksum(cmd, 0, 7);

	vp702x_usb_inout_op(st->d, cmd, 8, cmd, 10, 100);

	if (cmd[2] == 0 && cmd[3] == 0)
		deb_fe("diseqc cmd failed.\n");
	else
		deb_fe("diseqc cmd succeeded.\n");
	ret = 0;
out:
	kfree(cmd);
	return ret;
}

static int vp702x_fe_send_diseqc_burst (struct dvb_frontend* fe, fe_sec_mini_cmd_t burst)
{
	deb_fe("%s\n",__func__);
	return 0;
}

static int vp702x_fe_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
{
	struct vp702x_fe_state *st = fe->demodulator_priv;
	u8 *buf;

	deb_fe("%s\n",__func__);

	buf = kmalloc(10, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	st->tone_mode = tone;

	if (tone == SEC_TONE_ON)
		st->lnb_buf[2] = 0x02;
	else
		st->lnb_buf[2] = 0x00;

	st->lnb_buf[7] = vp702x_chksum(st->lnb_buf, 0, 7);
	memcpy(buf, st->lnb_buf, 8);

	vp702x_usb_inout_op(st->d, buf, 8, buf, 10, 100);
	if (buf[2] == 0 && buf[3] == 0)
		deb_fe("set_tone cmd failed.\n");
	else
		deb_fe("set_tone cmd succeeded.\n");

	kfree(buf);
	return 0;
}

static int vp702x_fe_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t
		voltage)
{
	struct vp702x_fe_state *st = fe->demodulator_priv;
	u8 *buf;
	deb_fe("%s\n",__func__);

	buf = kmalloc(10, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	st->voltage = voltage;

	if (voltage != SEC_VOLTAGE_OFF)
		st->lnb_buf[4] = 0x01;
	else
		st->lnb_buf[4] = 0x00;

	st->lnb_buf[7] = vp702x_chksum(st->lnb_buf, 0, 7);
	memcpy(buf, st->lnb_buf, 8);

	vp702x_usb_inout_op(st->d, buf, 8, buf, 10, 100);
	if (buf[2] == 0 && buf[3] == 0)
		deb_fe("set_voltage cmd failed.\n");
	else
		deb_fe("set_voltage cmd succeeded.\n");

	kfree(buf);
	return 0;
}

static void vp702x_fe_release(struct dvb_frontend* fe)
{
	struct vp702x_fe_state *st = fe->demodulator_priv;
	kfree(st);
}

static struct dvb_frontend_ops vp702x_fe_ops;

struct dvb_frontend * vp702x_fe_attach(struct dvb_usb_device *d)
{
	struct vp702x_fe_state *s = kzalloc(sizeof(struct vp702x_fe_state), GFP_KERNEL);
	if (s == NULL)
		goto error;

	s->d = d;

	memcpy(&s->fe.ops,&vp702x_fe_ops,sizeof(struct dvb_frontend_ops));
	s->fe.demodulator_priv = s;

	s->lnb_buf[1] = SET_LNB_POWER;
	s->lnb_buf[3] = 0xff; /* 0=tone burst, 2=data burst, ff=off */

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


static struct dvb_frontend_ops vp702x_fe_ops = {
	.info = {
		.name           = "Twinhan DST-like frontend (VP7021/VP7020) DVB-S",
		.type           = FE_QPSK,
		.frequency_min       = 950000,
		.frequency_max       = 2150000,
		.frequency_stepsize  = 1000,   /* kHz for QPSK frontends */
		.frequency_tolerance = 0,
		.symbol_rate_min     = 1000000,
		.symbol_rate_max     = 45000000,
		.symbol_rate_tolerance = 500,  /* ppm */
		.caps = 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_QPSK |
		FE_CAN_FEC_AUTO
	},
	.release = vp702x_fe_release,

	.init  = vp702x_fe_init,
	.sleep = vp702x_fe_sleep,

	.set_frontend = vp702x_fe_set_frontend,
	.get_frontend = vp702x_fe_get_frontend,
	.get_tune_settings = vp702x_fe_get_tune_settings,

	.read_status = vp702x_fe_read_status,
	.read_ber = vp702x_fe_read_ber,
	.read_signal_strength = vp702x_fe_read_signal_strength,
	.read_snr = vp702x_fe_read_snr,
	.read_ucblocks = vp702x_fe_read_unc_blocks,

	.diseqc_send_master_cmd = vp702x_fe_send_diseqc_msg,
	.diseqc_send_burst = vp702x_fe_send_diseqc_burst,
	.set_tone = vp702x_fe_set_tone,
	.set_voltage = vp702x_fe_set_voltage,
};
Commit	Line	Data
3706a4da PB	1	/* DVB frontend part of the Linux driver for the TwinhanDTV StarBox USB2.0
	2	* DVB-S receiver.
	3	*
	4	* Copyright (C) 2005 Ralph Metzler <rjkm@metzlerbros.de>
	5	* Metzler Brothers Systementwicklung GbR
	6	*
	7	* Copyright (C) 2005 Patrick Boettcher <patrick.boettcher@desy.de>
	8	*
	9	* Thanks to Twinhan who kindly provided hardware and information.
	10	*
	11	* This file can be removed soon, after the DST-driver is rewritten to provice
	12	* the frontend-controlling separately.
	13	*
	14	* This program is free software; you can redistribute it and/or modify it
	15	* under the terms of the GNU General Public License as published by the Free
	16	* Software Foundation, version 2.
	17	*
	18	* see Documentation/dvb/README.dvb-usb for more information
	19	*
	20	*/
	21	#include "vp702x.h"
	22
	23	struct vp702x_fe_state {
	24	struct dvb_frontend fe;
	25	struct dvb_usb_device *d;
	26
0540c496 PB	27	struct dvb_frontend_ops ops;
0540c496 PB	28
3706a4da PB	29	fe_sec_voltage_t voltage;
	30	fe_sec_tone_mode_t tone_mode;
	31
	32	u8 lnb_buf[8];
	33
	34	u8 lock;
	35	u8 sig;
	36	u8 snr;
	37
	38	unsigned long next_status_check;
	39	unsigned long status_check_interval;
	40	};
	41
	42	static int vp702x_fe_refresh_state(struct vp702x_fe_state *st)
	43	{
57873c72 FM	44	u8 *buf;
	45
	46	if (time_after(jiffies, st->next_status_check)) {
	47	buf = kmalloc(10, GFP_KERNEL);
	48	if (!buf) {
	49	deb_fe("%s: buffer alloc failed\n", __func__);
	50	return -ENOMEM;
	51	}
	52	vp702x_usb_in_op(st->d, READ_STATUS, 0, 0, buf, 10);
3706a4da	53	st->lock = buf[4];
57873c72 FM	54
	55	vp702x_usb_in_op(st->d, READ_TUNER_REG_REQ, 0x11, 0, buf, 1);
	56	st->snr = buf[0];
	57
	58	vp702x_usb_in_op(st->d, READ_TUNER_REG_REQ, 0x15, 0, buf, 1);
	59	st->sig = buf[0];
	60
3706a4da PB	61
3706a4da PB	62	st->next_status_check = jiffies + (st->status_check_interval*HZ)/1000;
57873c72	63	kfree(buf);
3706a4da PB	64	}
	65	return 0;
	66	}
	67
	68	static u8 vp702x_chksum(u8 *buf,int f, int count)
	69	{
	70	u8 s = 0;
	71	int i;
	72	for (i = f; i < f+count; i++)
	73	s += buf[i];
	74	return ~s+1;
	75	}
	76
	77	static int vp702x_fe_read_status(struct dvb_frontend* fe, fe_status_t *status)
	78	{
	79	struct vp702x_fe_state *st = fe->demodulator_priv;
	80	vp702x_fe_refresh_state(st);
708bebdd	81	deb_fe("%s\n",__func__);
3706a4da PB	82
	83	if (st->lock == 0)
	84	*status = FE_HAS_LOCK \| FE_HAS_SYNC \| FE_HAS_VITERBI \| FE_HAS_SIGNAL \| FE_HAS_CARRIER;
	85	else
	86	*status = 0;
	87
3706a4da PB	88	if (*status & FE_HAS_LOCK)
	89	st->status_check_interval = 1000;
	90	else
	91	st->status_check_interval = 250;
	92	return 0;
	93	}
	94
	95	/* not supported by this Frontend */
	96	static int vp702x_fe_read_ber(struct dvb_frontend* fe, u32 *ber)
	97	{
	98	struct vp702x_fe_state *st = fe->demodulator_priv;
	99	vp702x_fe_refresh_state(st);
	100	*ber = 0;
	101	return 0;
	102	}
	103
	104	/* not supported by this Frontend */
	105	static int vp702x_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
	106	{
	107	struct vp702x_fe_state *st = fe->demodulator_priv;
	108	vp702x_fe_refresh_state(st);
	109	*unc = 0;
	110	return 0;
	111	}
	112
	113	static int vp702x_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
	114	{
	115	struct vp702x_fe_state *st = fe->demodulator_priv;
	116	vp702x_fe_refresh_state(st);
	117
	118	*strength = (st->sig << 8) \| st->sig;
	119	return 0;
	120	}
	121
	122	static int vp702x_fe_read_snr(struct dvb_frontend* fe, u16 *snr)
	123	{
	124	u8 _snr;
	125	struct vp702x_fe_state *st = fe->demodulator_priv;
	126	vp702x_fe_refresh_state(st);
	127
	128	_snr = (st->snr & 0x1f) * 0xff / 0x1f;
	129	*snr = (_snr << 8) \| _snr;
	130	return 0;
	131	}
	132
	133	static int vp702x_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
	134	{
708bebdd	135	deb_fe("%s\n",__func__);
3706a4da PB	136	tune->min_delay_ms = 2000;
	137	return 0;
	138	}
	139
	140	static int vp702x_fe_set_frontend(struct dvb_frontend* fe,
	141	struct dvb_frontend_parameters *fep)
	142	{
	143	struct vp702x_fe_state *st = fe->demodulator_priv;
	144	u32 freq = fep->frequency/1000;
	145	/CalFrequency/
	146	/* u16 frequencyRef[16] = { 2, 4, 8, 16, 32, 64, 128, 256, 24, 5, 10, 20, 40, 80, 160, 320 }; */
	147	u64 sr;
57873c72 FM	148	u8 *cmd;
	149
	150	cmd = kzalloc(10, GFP_KERNEL);
	151	if (!cmd)
	152	return -ENOMEM;
3706a4da PB	153
	154	cmd[0] = (freq >> 8) & 0x7f;
	155	cmd[1] = freq & 0xff;
	156	cmd[2] = 1; /* divrate == 4 -> frequencyRef[1] -> 1 here */
	157
	158	sr = (u64) (fep->u.qpsk.symbol_rate/1000) << 20;
	159	do_div(sr,88000);
	160	cmd[3] = (sr >> 12) & 0xff;
	161	cmd[4] = (sr >> 4) & 0xff;
	162	cmd[5] = (sr << 4) & 0xf0;
	163
4ae5c2e5 MCC	164	deb_fe("setting frontend to: %u -> %u (%x) LNB-based GHz, symbolrate: %d -> %lu (%lx)\n",
	165	fep->frequency,freq,freq, fep->u.qpsk.symbol_rate,
	166	(unsigned long) sr, (unsigned long) sr);
3706a4da PB	167
	168	/* if (fep->inversion == INVERSION_ON)
	169	cmd[6] \|= 0x80; */
	170
	171	if (st->voltage == SEC_VOLTAGE_18)
	172	cmd[6] \|= 0x40;
	173
	174	/* if (fep->u.qpsk.symbol_rate > 8000000)
	175	cmd[6] \|= 0x20;
	176
	177	if (fep->frequency < 1531000)
	178	cmd[6] \|= 0x04;
	179
	180	if (st->tone_mode == SEC_TONE_ON)
	181	cmd[6] \|= 0x01;*/
	182
	183	cmd[7] = vp702x_chksum(cmd,0,7);
	184
	185	st->status_check_interval = 250;
	186	st->next_status_check = jiffies;
	187
57873c72	188	vp702x_usb_inout_op(st->d, cmd, 8, cmd, 10, 100);
3706a4da	189
57873c72	190	if (cmd[2] == 0 && cmd[3] == 0)
3706a4da PB	191	deb_fe("tuning failed.\n");
	192	else
	193	deb_fe("tuning succeeded.\n");
	194
57873c72	195	kfree(cmd);
3706a4da PB	196	return 0;
	197	}
	198
0540c496 PB	199	static int vp702x_fe_init(struct dvb_frontend *fe)
	200	{
	201	struct vp702x_fe_state *st = fe->demodulator_priv;
708bebdd	202	deb_fe("%s\n",__func__);
0540c496 PB	203	vp702x_usb_in_op(st->d, RESET_TUNER, 0, 0, NULL, 0);
	204	return 0;
	205	}
	206
	207	static int vp702x_fe_sleep(struct dvb_frontend *fe)
	208	{
708bebdd	209	deb_fe("%s\n",__func__);
0540c496 PB	210	return 0;
	211	}
	212
3706a4da PB	213	static int vp702x_fe_get_frontend(struct dvb_frontend* fe,
	214	struct dvb_frontend_parameters *fep)
	215	{
708bebdd	216	deb_fe("%s\n",__func__);
3706a4da PB	217	return 0;
	218	}
	219
	220	static int vp702x_fe_send_diseqc_msg (struct dvb_frontend* fe,
50c25fff	221	struct dvb_diseqc_master_cmd *m)
3706a4da	222	{
57873c72 FM	223	int ret;
57873c72 FM	224	u8 *cmd;
5ad5e484	225	struct vp702x_fe_state *st = fe->demodulator_priv;
57873c72 FM	226
	227	cmd = kzalloc(10, GFP_KERNEL);
	228	if (!cmd)
	229	return -ENOMEM;
3706a4da	230
708bebdd	231	deb_fe("%s\n",__func__);
3706a4da	232
57873c72 FM	233	if (m->msg_len > 4) {
	234	ret = -EINVAL;
	235	goto out;
	236	}
3706a4da PB	237
	238	cmd[1] = SET_DISEQC_CMD;
	239	cmd[2] = m->msg_len;
	240	memcpy(&cmd[3], m->msg, m->msg_len);
57873c72	241	cmd[7] = vp702x_chksum(cmd, 0, 7);
3706a4da	242
57873c72	243	vp702x_usb_inout_op(st->d, cmd, 8, cmd, 10, 100);
3706a4da	244
57873c72	245	if (cmd[2] == 0 && cmd[3] == 0)
5ad5e484 PE	246	deb_fe("diseqc cmd failed.\n");
	247	else
	248	deb_fe("diseqc cmd succeeded.\n");
57873c72 FM	249	ret = 0;
	250	out:
	251	kfree(cmd);
	252	return ret;
3706a4da PB	253	}
	254
	255	static int vp702x_fe_send_diseqc_burst (struct dvb_frontend* fe, fe_sec_mini_cmd_t burst)
	256	{
708bebdd	257	deb_fe("%s\n",__func__);
3706a4da PB	258	return 0;
	259	}
	260
	261	static int vp702x_fe_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
	262	{
	263	struct vp702x_fe_state *st = fe->demodulator_priv;
57873c72 FM	264	u8 *buf;
57873c72 FM	265
708bebdd	266	deb_fe("%s\n",__func__);
3706a4da	267
57873c72 FM	268	buf = kmalloc(10, GFP_KERNEL);
	269	if (!buf)
	270	return -ENOMEM;
	271
3706a4da PB	272	st->tone_mode = tone;
	273
	274	if (tone == SEC_TONE_ON)
	275	st->lnb_buf[2] = 0x02;
	276	else
	277	st->lnb_buf[2] = 0x00;
	278
57873c72 FM	279	st->lnb_buf[7] = vp702x_chksum(st->lnb_buf, 0, 7);
57873c72 FM	280	memcpy(buf, st->lnb_buf, 8);
3706a4da	281
57873c72 FM	282	vp702x_usb_inout_op(st->d, buf, 8, buf, 10, 100);
57873c72 FM	283	if (buf[2] == 0 && buf[3] == 0)
3706a4da PB	284	deb_fe("set_tone cmd failed.\n");
	285	else
	286	deb_fe("set_tone cmd succeeded.\n");
	287
57873c72	288	kfree(buf);
3706a4da PB	289	return 0;
	290	}
	291
	292	static int vp702x_fe_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t
	293	voltage)
	294	{
	295	struct vp702x_fe_state *st = fe->demodulator_priv;
57873c72	296	u8 *buf;
708bebdd	297	deb_fe("%s\n",__func__);
3706a4da	298
57873c72 FM	299	buf = kmalloc(10, GFP_KERNEL);
	300	if (!buf)
	301	return -ENOMEM;
	302
3706a4da PB	303	st->voltage = voltage;
	304
	305	if (voltage != SEC_VOLTAGE_OFF)
	306	st->lnb_buf[4] = 0x01;
	307	else
	308	st->lnb_buf[4] = 0x00;
	309
57873c72 FM	310	st->lnb_buf[7] = vp702x_chksum(st->lnb_buf, 0, 7);
57873c72 FM	311	memcpy(buf, st->lnb_buf, 8);
3706a4da	312
57873c72 FM	313	vp702x_usb_inout_op(st->d, buf, 8, buf, 10, 100);
57873c72 FM	314	if (buf[2] == 0 && buf[3] == 0)
3706a4da PB	315	deb_fe("set_voltage cmd failed.\n");
	316	else
	317	deb_fe("set_voltage cmd succeeded.\n");
	318
57873c72	319	kfree(buf);
3706a4da PB	320	return 0;
	321	}
	322
	323	static void vp702x_fe_release(struct dvb_frontend* fe)
	324	{
	325	struct vp702x_fe_state *st = fe->demodulator_priv;
	326	kfree(st);
	327	}
	328
	329	static struct dvb_frontend_ops vp702x_fe_ops;
	330
	331	struct dvb_frontend * vp702x_fe_attach(struct dvb_usb_device *d)
	332	{
7408187d	333	struct vp702x_fe_state *s = kzalloc(sizeof(struct vp702x_fe_state), GFP_KERNEL);
3706a4da PB	334	if (s == NULL)
3706a4da PB	335	goto error;
3706a4da PB	336
3706a4da PB	337	s->d = d;
dea74869 PB	338
dea74869 PB	339	memcpy(&s->fe.ops,&vp702x_fe_ops,sizeof(struct dvb_frontend_ops));
3706a4da PB	340	s->fe.demodulator_priv = s;
	341
	342	s->lnb_buf[1] = SET_LNB_POWER;
	343	s->lnb_buf[3] = 0xff; /* 0=tone burst, 2=data burst, ff=off */
	344
8397703e	345	return &s->fe;
3706a4da PB	346	error:
3706a4da PB	347	return NULL;
3706a4da PB	348	}
	349
	350
	351	static struct dvb_frontend_ops vp702x_fe_ops = {
	352	.info = {
	353	.name = "Twinhan DST-like frontend (VP7021/VP7020) DVB-S",
	354	.type = FE_QPSK,
	355	.frequency_min = 950000,
	356	.frequency_max = 2150000,
	357	.frequency_stepsize = 1000, /* kHz for QPSK frontends */
	358	.frequency_tolerance = 0,
	359	.symbol_rate_min = 1000000,
	360	.symbol_rate_max = 45000000,
	361	.symbol_rate_tolerance = 500, /* ppm */
	362	.caps = FE_CAN_FEC_1_2 \| FE_CAN_FEC_2_3 \| FE_CAN_FEC_3_4 \|
	363	FE_CAN_FEC_5_6 \| FE_CAN_FEC_7_8 \|
	364	FE_CAN_QPSK \|
	365	FE_CAN_FEC_AUTO
	366	},
	367	.release = vp702x_fe_release,
	368
0540c496 PB	369	.init = vp702x_fe_init,
0540c496 PB	370	.sleep = vp702x_fe_sleep,
3706a4da PB	371
	372	.set_frontend = vp702x_fe_set_frontend,
	373	.get_frontend = vp702x_fe_get_frontend,
	374	.get_tune_settings = vp702x_fe_get_tune_settings,
	375
	376	.read_status = vp702x_fe_read_status,
	377	.read_ber = vp702x_fe_read_ber,
	378	.read_signal_strength = vp702x_fe_read_signal_strength,
	379	.read_snr = vp702x_fe_read_snr,
	380	.read_ucblocks = vp702x_fe_read_unc_blocks,
	381
	382	.diseqc_send_master_cmd = vp702x_fe_send_diseqc_msg,
	383	.diseqc_send_burst = vp702x_fe_send_diseqc_burst,
	384	.set_tone = vp702x_fe_set_tone,
	385	.set_voltage = vp702x_fe_set_voltage,
	386	};