diff options
Diffstat (limited to 'drivers/media/dvb/dibusb/dvb-fe-dtt200u.c')
| -rw-r--r-- | drivers/media/dvb/dibusb/dvb-fe-dtt200u.c | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/drivers/media/dvb/dibusb/dvb-fe-dtt200u.c b/drivers/media/dvb/dibusb/dvb-fe-dtt200u.c new file mode 100644 index 000000000000..1872aa6d200a --- /dev/null +++ b/drivers/media/dvb/dibusb/dvb-fe-dtt200u.c @@ -0,0 +1,263 @@ +/* + * dvb-dtt200u-fe.c is a driver which implements the frontend-part of the + * Yakumo/Typhoon/Hama USB2.0 boxes. It is hard-wired to the dibusb-driver as + * it uses the usb-transfer functions directly (maybe creating a + * generic-dvb-usb-lib for all usb-drivers will be reduce some more code.) + * + * Copyright (C) 2005 Patrick Boettcher <patrick.boettcher@desy.de> + * + * see dvb-dibusb-core.c for copyright details. + */ + +/* guessed protocol description (reverse engineered): + * read + * 00 - USB type 0x02 for usb2.0, 0x01 for usb1.1 + * 81 - <TS_LOCK> <current frequency divided by 250000> + * 82 - crash - do not touch + * 83 - crash - do not touch + * 84 - remote control + * 85 - crash - do not touch (OK, stop testing here) + * 88 - locking 2 bytes (0x80 0x40 == no signal, 0x89 0x20 == nice signal) + * 89 - noise-to-signal + * 8a - unkown 1 byte - signal_strength + * 8c - ber ??? + * 8d - ber + * 8e - unc + * + * write + * 02 - bandwidth + * 03 - frequency (divided by 250000) + * 04 - pid table (index pid(7:0) pid(12:8)) + * 05 - reset the pid table + * 08 - demod transfer enabled or not (FX2 transfer is enabled by default) + */ + +#include "dvb-dibusb.h" +#include "dvb_frontend.h" + +struct dtt200u_fe_state { + struct usb_dibusb *dib; + + struct dvb_frontend_parameters fep; + struct dvb_frontend frontend; +}; + +#define moan(which,what) info("unexpected value in '%s' for cmd '%02x' - please report to linux-dvb@linuxtv.org",which,what) + +static int dtt200u_fe_read_status(struct dvb_frontend* fe, fe_status_t *stat) +{ + struct dtt200u_fe_state *state = fe->demodulator_priv; + u8 bw[1] = { 0x81 }; + u8 br[3] = { 0 }; +// u8 bdeb[5] = { 0 }; + + dibusb_readwrite_usb(state->dib,bw,1,br,3); + switch (br[0]) { + case 0x01: + *stat = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; + break; + case 0x00: + *stat = 0; + break; + default: + moan("br[0]",0x81); + break; + } + +// bw[0] = 0x88; +// dibusb_readwrite_usb(state->dib,bw,1,bdeb,5); + +// deb_info("%02x: %02x %02x %02x %02x %02x\n",bw[0],bdeb[0],bdeb[1],bdeb[2],bdeb[3],bdeb[4]); + + return 0; +} +static int dtt200u_fe_read_ber(struct dvb_frontend* fe, u32 *ber) +{ + struct dtt200u_fe_state *state = fe->demodulator_priv; + u8 bw[1] = { 0x8d }; + *ber = 0; + dibusb_readwrite_usb(state->dib,bw,1,(u8*) ber, 3); + 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[1] = { 0x8c }; + *unc = 0; + dibusb_readwrite_usb(state->dib,bw,1,(u8*) unc, 3); + 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[1] = { 0x8a }; + u8 b; + dibusb_readwrite_usb(state->dib,bw,1,&b, 1); + *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[1] = { 0x89 }; + u8 br[1] = { 0 }; + dibusb_readwrite_usb(state->dib,bw,1,br,1); + *snr = ((0xff - br[0]) << 8) | (0xff - br[0]); + return 0; +} + +static int dtt200u_fe_init(struct dvb_frontend* fe) +{ + struct dtt200u_fe_state *state = fe->demodulator_priv; + u8 b[] = { 0x01 }; + return dibusb_write_usb(state->dib,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 = 166667; + tune->max_drift = 166667 * 2; + return 0; +} + +static int dtt200u_fe_set_frontend(struct dvb_frontend* fe, + struct dvb_frontend_parameters *fep) +{ + struct dtt200u_fe_state *state = fe->demodulator_priv; + u16 freq = fep->frequency / 250000; + u8 bw,bwbuf[2] = { 0x03, 0 }, freqbuf[3] = { 0x02, 0, 0 }; + + switch (fep->u.ofdm.bandwidth) { + case BANDWIDTH_8_MHZ: bw = 8; break; + case BANDWIDTH_7_MHZ: bw = 7; break; + case BANDWIDTH_6_MHZ: bw = 6; break; + case BANDWIDTH_AUTO: return -EOPNOTSUPP; + default: + return -EINVAL; + } + deb_info("set_frontend\n"); + + bwbuf[1] = bw; + dibusb_write_usb(state->dib,bwbuf,2); + + freqbuf[1] = freq & 0xff; + freqbuf[2] = (freq >> 8) & 0xff; + dibusb_write_usb(state->dib,freqbuf,3); + + memcpy(&state->fep,fep,sizeof(struct dvb_frontend_parameters)); + + return 0; +} + +static int dtt200u_fe_get_frontend(struct dvb_frontend* fe, + struct dvb_frontend_parameters *fep) +{ + struct dtt200u_fe_state *state = fe->demodulator_priv; + memcpy(fep,&state->fep,sizeof(struct dvb_frontend_parameters)); + 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 int dtt200u_pid_control(struct dvb_frontend *fe,int index, int pid,int onoff) +{ + struct dtt200u_fe_state *state = (struct dtt200u_fe_state*) fe->demodulator_priv; + u8 b_pid[4]; + pid = onoff ? pid : 0; + + b_pid[0] = 0x04; + b_pid[1] = index; + b_pid[2] = pid & 0xff; + b_pid[3] = (pid >> 8) & 0xff; + + dibusb_write_usb(state->dib,b_pid,4); + return 0; +} + +static int dtt200u_fifo_control(struct dvb_frontend *fe, int onoff) +{ + struct dtt200u_fe_state *state = (struct dtt200u_fe_state*) fe->demodulator_priv; + u8 b_streaming[2] = { 0x08, onoff }; + u8 b_rst_pid[1] = { 0x05 }; + + dibusb_write_usb(state->dib,b_streaming,2); + + if (!onoff) + dibusb_write_usb(state->dib,b_rst_pid,1); + return 0; +} + +static struct dvb_frontend_ops dtt200u_fe_ops; + +struct dvb_frontend* dtt200u_fe_attach(struct usb_dibusb *dib, struct dib_fe_xfer_ops *xfer_ops) +{ + struct dtt200u_fe_state* state = NULL; + + /* allocate memory for the internal state */ + state = (struct dtt200u_fe_state*) kmalloc(sizeof(struct dtt200u_fe_state), GFP_KERNEL); + if (state == NULL) + goto error; + memset(state,0,sizeof(struct dtt200u_fe_state)); + + deb_info("attaching frontend dtt200u\n"); + + state->dib = dib; + + state->frontend.ops = &dtt200u_fe_ops; + state->frontend.demodulator_priv = state; + + xfer_ops->fifo_ctrl = dtt200u_fifo_control; + xfer_ops->pid_ctrl = dtt200u_pid_control; + + goto success; +error: + return NULL; +success: + return &state->frontend; +} + +static struct dvb_frontend_ops dtt200u_fe_ops = { + .info = { + .name = "DTT200U (Yakumo/Typhoon/Hama) DVB-T", + .type = FE_OFDM, + .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, +}; |