[PATCH] dvb: usb: add TwinhanDTV StarBox support

Add driver for the TwinhanDTV StarBox and clones.

Thanks to Ralph Metzler for his initial work on this box and thanks to Twinhan
for their support.

Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 339 insertions, 0 deletions

diff --git a/drivers/media/dvb/dvb-usb/vp702x-fe.c b/drivers/media/dvb/dvb-usb/vp702x-fe.c
new file mode 100644
index 000000000000..f20d8dbd0be8
--- /dev/null
+++ b/drivers/media/dvb/dvb-usb/vp702x-fe.c
@@ -0,0 +1,339 @@
+/* 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;
+
+	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[10];
+	if (time_after(jiffies,st->next_status_check)) {
+		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,&st->snr,1);
+		vp702x_usb_in_op(st->d,READ_TUNER_REG_REQ,0x15,0,&st->sig,1);
+
+		st->next_status_check = jiffies + (st->status_check_interval*HZ)/1000;
+	}
+	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",__FUNCTION__);
+
+	if (st->lock == 0)
+		*status = FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI | FE_HAS_SIGNAL | FE_HAS_CARRIER;
+	else
+		*status = 0;
+
+	deb_fe("real state: %x\n",*status);
+	*status = 0x1f;
+
+	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",__FUNCTION__);
+	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[8] = { 0 },ibuf[10];
+
+	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, sr, 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_in_op(st->d, RESET_TUNER, 0, 0, NULL, 0);
+	msleep(30);
+	vp702x_usb_inout_op(st->d,cmd,8,ibuf,10,100);
+
+	if (ibuf[2] == 0 && ibuf[3] == 0)
+		deb_fe("tuning failed.\n");
+	else
+		deb_fe("tuning succeeded.\n");
+
+	return 0;
+}
+
+static int vp702x_fe_get_frontend(struct dvb_frontend* fe,
+				  struct dvb_frontend_parameters *fep)
+{
+	deb_fe("%s\n",__FUNCTION__);
+	return 0;
+}
+
+static int vp702x_fe_send_diseqc_msg (struct dvb_frontend* fe,
+		                    struct dvb_diseqc_master_cmd *m)
+{
+	struct vp702x_fe_state *st = fe->demodulator_priv;
+	u8 cmd[8],ibuf[10];
+	memset(cmd,0,8);
+
+	deb_fe("%s\n",__FUNCTION__);
+
+	if (m->msg_len > 4)
+		return -EINVAL;
+
+	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,ibuf,10,100);
+
+	if (ibuf[2] == 0 && ibuf[3] == 0)
+		deb_fe("diseqc cmd failed.\n");
+	else
+		deb_fe("diseqc cmd succeeded.\n");
+
+	return 0;
+}
+
+static int vp702x_fe_send_diseqc_burst (struct dvb_frontend* fe, fe_sec_mini_cmd_t burst)
+{
+	deb_fe("%s\n",__FUNCTION__);
+	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 ibuf[10];
+	deb_fe("%s\n",__FUNCTION__);
+
+	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);
+
+	vp702x_usb_inout_op(st->d,st->lnb_buf,8,ibuf,10,100);
+	if (ibuf[2] == 0 && ibuf[3] == 0)
+		deb_fe("set_tone cmd failed.\n");
+	else
+		deb_fe("set_tone cmd succeeded.\n");
+
+	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 ibuf[10];
+	deb_fe("%s\n",__FUNCTION__);
+
+	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);
+
+	vp702x_usb_inout_op(st->d,st->lnb_buf,8,ibuf,10,100);
+	if (ibuf[2] == 0 && ibuf[3] == 0)
+		deb_fe("set_voltage cmd failed.\n");
+	else
+		deb_fe("set_voltage cmd succeeded.\n");
+
+	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 = kmalloc(sizeof(struct vp702x_fe_state), GFP_KERNEL);
+	if (s == NULL)
+		goto error;
+	memset(s,0,sizeof(struct vp702x_fe_state));
+
+	s->d = d;
+	s->fe.ops = &vp702x_fe_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 */
+
+	goto success;
+error:
+	return NULL;
+success:
+	return &s->fe;
+}
+
+
+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 = NULL,
+	.sleep = NULL,
+
+	.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,
+};