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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 Mantis VP-2040 driver4 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 13#include <media/dmxdev.h>14#include <media/dvbdev.h>15#include <media/dvb_demux.h>16#include <media/dvb_frontend.h>17#include <media/dvb_net.h>18 19#include "tda1002x.h"20#include "mantis_common.h"21#include "mantis_ioc.h"22#include "mantis_dvb.h"23#include "mantis_vp2040.h"24 25#define MANTIS_MODEL_NAME "VP-2040"26#define MANTIS_DEV_TYPE "DVB-C"27 28static struct tda1002x_config vp2040_tda1002x_cu1216_config = {29 .demod_address = 0x18 >> 1,30 .invert = 1,31};32 33static struct tda10023_config vp2040_tda10023_cu1216_config = {34 .demod_address = 0x18 >> 1,35 .invert = 1,36};37 38static int tda1002x_cu1216_tuner_set(struct dvb_frontend *fe)39{40 struct dtv_frontend_properties *p = &fe->dtv_property_cache;41 struct mantis_pci *mantis = fe->dvb->priv;42 struct i2c_adapter *adapter = &mantis->adapter;43 44 u8 buf[6];45 struct i2c_msg msg = {.addr = 0x60, .flags = 0, .buf = buf, .len = sizeof(buf)};46 int i;47 48#define CU1216_IF 3612500049#define TUNER_MUL 6250050 51 u32 div = (p->frequency + CU1216_IF + TUNER_MUL / 2) / TUNER_MUL;52 53 buf[0] = (div >> 8) & 0x7f;54 buf[1] = div & 0xff;55 buf[2] = 0xce;56 buf[3] = (p->frequency < 150000000 ? 0x01 :57 p->frequency < 445000000 ? 0x02 : 0x04);58 buf[4] = 0xde;59 buf[5] = 0x20;60 61 if (fe->ops.i2c_gate_ctrl)62 fe->ops.i2c_gate_ctrl(fe, 1);63 64 if (i2c_transfer(adapter, &msg, 1) != 1)65 return -EIO;66 67 /* wait for the pll lock */68 msg.flags = I2C_M_RD;69 msg.len = 1;70 for (i = 0; i < 20; i++) {71 if (fe->ops.i2c_gate_ctrl)72 fe->ops.i2c_gate_ctrl(fe, 1);73 74 if (i2c_transfer(adapter, &msg, 1) == 1 && (buf[0] & 0x40))75 break;76 77 msleep(10);78 }79 80 /* switch the charge pump to the lower current */81 msg.flags = 0;82 msg.len = 2;83 msg.buf = &buf[2];84 buf[2] &= ~0x40;85 if (fe->ops.i2c_gate_ctrl)86 fe->ops.i2c_gate_ctrl(fe, 1);87 88 if (i2c_transfer(adapter, &msg, 1) != 1)89 return -EIO;90 91 return 0;92}93 94static u8 read_pwm(struct mantis_pci *mantis)95{96 struct i2c_adapter *adapter = &mantis->adapter;97 98 u8 b = 0xff;99 u8 pwm;100 struct i2c_msg msg[] = {101 {.addr = 0x50, .flags = 0, .buf = &b, .len = 1},102 {.addr = 0x50, .flags = I2C_M_RD, .buf = &pwm, .len = 1}103 };104 105 if ((i2c_transfer(adapter, msg, 2) != 2)106 || (pwm == 0xff))107 pwm = 0x48;108 109 return pwm;110}111 112static int vp2040_frontend_init(struct mantis_pci *mantis, struct dvb_frontend *fe)113{114 struct i2c_adapter *adapter = &mantis->adapter;115 116 int err = 0;117 118 err = mantis_frontend_power(mantis, POWER_ON);119 if (err == 0) {120 mantis_frontend_soft_reset(mantis);121 msleep(250);122 123 dprintk(MANTIS_ERROR, 1, "Probing for CU1216 (DVB-C)");124 fe = dvb_attach(tda10021_attach, &vp2040_tda1002x_cu1216_config,125 adapter,126 read_pwm(mantis));127 128 if (fe) {129 dprintk(MANTIS_ERROR, 1,130 "found Philips CU1216 DVB-C frontend (TDA10021) @ 0x%02x",131 vp2040_tda1002x_cu1216_config.demod_address);132 } else {133 fe = dvb_attach(tda10023_attach, &vp2040_tda10023_cu1216_config,134 adapter,135 read_pwm(mantis));136 137 if (fe) {138 dprintk(MANTIS_ERROR, 1,139 "found Philips CU1216 DVB-C frontend (TDA10023) @ 0x%02x",140 vp2040_tda1002x_cu1216_config.demod_address);141 }142 }143 144 if (fe) {145 fe->ops.tuner_ops.set_params = tda1002x_cu1216_tuner_set;146 dprintk(MANTIS_ERROR, 1, "Mantis DVB-C Philips CU1216 frontend attach success");147 } else {148 return -1;149 }150 } else {151 dprintk(MANTIS_ERROR, 1, "Frontend on <%s> POWER ON failed! <%d>",152 adapter->name,153 err);154 155 return -EIO;156 }157 mantis->fe = fe;158 dprintk(MANTIS_DEBUG, 1, "Done!");159 160 return 0;161}162 163struct mantis_hwconfig vp2040_config = {164 .model_name = MANTIS_MODEL_NAME,165 .dev_type = MANTIS_DEV_TYPE,166 .ts_size = MANTIS_TS_204,167 168 .baud_rate = MANTIS_BAUD_9600,169 .parity = MANTIS_PARITY_NONE,170 .bytes = 0,171 172 .frontend_init = vp2040_frontend_init,173 .power = GPIF_A12,174 .reset = GPIF_A13,175};176