1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 Mantis VP-2040 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 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 28 static struct tda1002x_config vp2040_tda1002x_cu1216_config = { 29 .demod_address = 0x18 >> 1, 30 .invert = 1, 31 }; 32 33 static struct tda10023_config vp2040_tda10023_cu1216_config = { 34 .demod_address = 0x18 >> 1, 35 .invert = 1, 36 }; 37 38 static 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 36125000 49 #define TUNER_MUL 62500 50 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 94 static 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 } 111 112 static 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 } 162 163 struct 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