1 files changed, 387 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 00000000000..2bb8d4cc8d8
--- /dev/null
+++ b/drivers/media/dvb/dvb-usb/vp702x-fe.c
@@ -0,0 +1,387 @@
+/* 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)
+{
+        struct vp702x_device_state *dst = st->d->priv;
+        u8 *buf;
+
+        if (time_after(jiffies, st->next_status_check)) {
+                mutex_lock(&dst->buf_mutex);
+                buf = dst->buf;
+
+                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];
+
+                mutex_unlock(&dst->buf_mutex);
+                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",__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;
+        struct vp702x_device_state *dst = st->d->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;
+
+        mutex_lock(&dst->buf_mutex);
+
+        cmd = dst->buf;
+        memset(cmd, 0, 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,
+                        (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");
+
+        mutex_unlock(&dst->buf_mutex);
+
+        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)
+{
+        u8 *cmd;
+        struct vp702x_fe_state *st = fe->demodulator_priv;
+        struct vp702x_device_state *dst = st->d->priv;
+
+        deb_fe("%s\n",__func__);
+
+        if (m->msg_len > 4)
+                return -EINVAL;
+
+        mutex_lock(&dst->buf_mutex);
+
+        cmd = dst->buf;
+        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");
+
+        mutex_unlock(&dst->buf_mutex);
+
+        return 0;
+}
+
+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;
+        struct vp702x_device_state *dst = st->d->priv;
+        u8 *buf;
+
+        deb_fe("%s\n",__func__);
+
+        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);
+
+        mutex_lock(&dst->buf_mutex);
+
+        buf = dst->buf;
+        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");
+
+        mutex_unlock(&dst->buf_mutex);
+
+        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;
+        struct vp702x_device_state *dst = st->d->priv;
+        u8 *buf;
+        deb_fe("%s\n",__func__);
+
+        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);
+
+        mutex_lock(&dst->buf_mutex);
+
+        buf = dst->buf;
+        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");
+
+        mutex_unlock(&dst->buf_mutex);
+        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,
+};