// SPDX-License-Identifier: GPL-2.0-or-later
/*
        Mantis VP-1034 driver

        Copyright (C) Manu Abraham (abraham.manu@gmail.com)

*/

#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <asm/io.h>

#include <media/dmxdev.h>
#include <media/dvbdev.h>
#include <media/dvb_demux.h>
#include <media/dvb_frontend.h>
#include <media/dvb_net.h>

#include "mb86a16.h"
#include "mantis_common.h"
#include "mantis_ioc.h"
#include "mantis_dvb.h"
#include "mantis_vp1034.h"
#include "mantis_reg.h"

static const struct mb86a16_config vp1034_mb86a16_config = {
        .demod_address  = 0x08,
        .set_voltage    = vp1034_set_voltage,
};

#define MANTIS_MODEL_NAME       "VP-1034"
#define MANTIS_DEV_TYPE         "DVB-S/DSS"

int vp1034_set_voltage(struct dvb_frontend *fe, enum fe_sec_voltage voltage)
{
        struct mantis_pci *mantis = fe->dvb->priv;

        switch (voltage) {
        case SEC_VOLTAGE_13:
                dprintk(MANTIS_ERROR, 1, "Polarization=[13V]");
                mantis_gpio_set_bits(mantis, 13, 1);
                mantis_gpio_set_bits(mantis, 14, 0);
                break;
        case SEC_VOLTAGE_18:
                dprintk(MANTIS_ERROR, 1, "Polarization=[18V]");
                mantis_gpio_set_bits(mantis, 13, 1);
                mantis_gpio_set_bits(mantis, 14, 1);
                break;
        case SEC_VOLTAGE_OFF:
                dprintk(MANTIS_ERROR, 1, "Frontend (dummy) POWERDOWN");
                break;
        default:
                dprintk(MANTIS_ERROR, 1, "Invalid = (%d)", (u32) voltage);
                return -EINVAL;
        }
        mmwrite(0x00, MANTIS_GPIF_DOUT);

        return 0;
}

static int vp1034_frontend_init(struct mantis_pci *mantis, struct dvb_frontend *fe)
{
        struct i2c_adapter *adapter     = &mantis->adapter;

        int err = 0;

        err = mantis_frontend_power(mantis, POWER_ON);
        if (err == 0) {
                mantis_frontend_soft_reset(mantis);
                msleep(250);

                dprintk(MANTIS_ERROR, 1, "Probing for MB86A16 (DVB-S/DSS)");
                fe = dvb_attach(mb86a16_attach, &vp1034_mb86a16_config, adapter);
                if (fe) {
                        dprintk(MANTIS_ERROR, 1,
                        "found MB86A16 DVB-S/DSS frontend @0x%02x",
                        vp1034_mb86a16_config.demod_address);

                } else {
                        return -1;
                }
        } else {
                dprintk(MANTIS_ERROR, 1, "Frontend on <%s> POWER ON failed! <%d>",
                        adapter->name,
                        err);

                return -EIO;
        }
        mantis->fe = fe;
        dprintk(MANTIS_ERROR, 1, "Done!");

        return 0;
}

struct mantis_hwconfig vp1034_config = {
        .model_name     = MANTIS_MODEL_NAME,
        .dev_type       = MANTIS_DEV_TYPE,
        .ts_size        = MANTIS_TS_204,

        .baud_rate      = MANTIS_BAUD_9600,
        .parity         = MANTIS_PARITY_NONE,
        .bytes          = 0,

        .frontend_init  = vp1034_frontend_init,
        .power          = GPIF_A12,
        .reset          = GPIF_A13,
};