cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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mantis_vp1034.c (2462B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3	Mantis VP-1034 driver
      4
      5	Copyright (C) Manu Abraham (abraham.manu@gmail.com)
      6
      7*/
      8
      9#include <linux/signal.h>
     10#include <linux/sched.h>
     11#include <linux/interrupt.h>
     12#include <asm/io.h>
     13
     14#include <media/dmxdev.h>
     15#include <media/dvbdev.h>
     16#include <media/dvb_demux.h>
     17#include <media/dvb_frontend.h>
     18#include <media/dvb_net.h>
     19
     20#include "mb86a16.h"
     21#include "mantis_common.h"
     22#include "mantis_ioc.h"
     23#include "mantis_dvb.h"
     24#include "mantis_vp1034.h"
     25#include "mantis_reg.h"
     26
     27static const struct mb86a16_config vp1034_mb86a16_config = {
     28	.demod_address	= 0x08,
     29	.set_voltage	= vp1034_set_voltage,
     30};
     31
     32#define MANTIS_MODEL_NAME	"VP-1034"
     33#define MANTIS_DEV_TYPE		"DVB-S/DSS"
     34
     35int vp1034_set_voltage(struct dvb_frontend *fe, enum fe_sec_voltage voltage)
     36{
     37	struct mantis_pci *mantis = fe->dvb->priv;
     38
     39	switch (voltage) {
     40	case SEC_VOLTAGE_13:
     41		dprintk(MANTIS_ERROR, 1, "Polarization=[13V]");
     42		mantis_gpio_set_bits(mantis, 13, 1);
     43		mantis_gpio_set_bits(mantis, 14, 0);
     44		break;
     45	case SEC_VOLTAGE_18:
     46		dprintk(MANTIS_ERROR, 1, "Polarization=[18V]");
     47		mantis_gpio_set_bits(mantis, 13, 1);
     48		mantis_gpio_set_bits(mantis, 14, 1);
     49		break;
     50	case SEC_VOLTAGE_OFF:
     51		dprintk(MANTIS_ERROR, 1, "Frontend (dummy) POWERDOWN");
     52		break;
     53	default:
     54		dprintk(MANTIS_ERROR, 1, "Invalid = (%d)", (u32) voltage);
     55		return -EINVAL;
     56	}
     57	mmwrite(0x00, MANTIS_GPIF_DOUT);
     58
     59	return 0;
     60}
     61
     62static int vp1034_frontend_init(struct mantis_pci *mantis, struct dvb_frontend *fe)
     63{
     64	struct i2c_adapter *adapter	= &mantis->adapter;
     65
     66	int err = 0;
     67
     68	err = mantis_frontend_power(mantis, POWER_ON);
     69	if (err == 0) {
     70		mantis_frontend_soft_reset(mantis);
     71		msleep(250);
     72
     73		dprintk(MANTIS_ERROR, 1, "Probing for MB86A16 (DVB-S/DSS)");
     74		fe = dvb_attach(mb86a16_attach, &vp1034_mb86a16_config, adapter);
     75		if (fe) {
     76			dprintk(MANTIS_ERROR, 1,
     77			"found MB86A16 DVB-S/DSS frontend @0x%02x",
     78			vp1034_mb86a16_config.demod_address);
     79
     80		} else {
     81			return -1;
     82		}
     83	} else {
     84		dprintk(MANTIS_ERROR, 1, "Frontend on <%s> POWER ON failed! <%d>",
     85			adapter->name,
     86			err);
     87
     88		return -EIO;
     89	}
     90	mantis->fe = fe;
     91	dprintk(MANTIS_ERROR, 1, "Done!");
     92
     93	return 0;
     94}
     95
     96struct mantis_hwconfig vp1034_config = {
     97	.model_name	= MANTIS_MODEL_NAME,
     98	.dev_type	= MANTIS_DEV_TYPE,
     99	.ts_size	= MANTIS_TS_204,
    100
    101	.baud_rate	= MANTIS_BAUD_9600,
    102	.parity		= MANTIS_PARITY_NONE,
    103	.bytes		= 0,
    104
    105	.frontend_init	= vp1034_frontend_init,
    106	.power		= GPIF_A12,
    107	.reset		= GPIF_A13,
    108};