1 /* 2 Mantis VP-2040 driver 3 4 Copyright (C) Manu Abraham (abraham.manu@gmail.com) 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 19 */ 20 21 #include <linux/signal.h> 22 #include <linux/sched.h> 23 #include <linux/interrupt.h> 24 25 #include <media/dmxdev.h> 26 #include <media/dvbdev.h> 27 #include <media/dvb_demux.h> 28 #include <media/dvb_frontend.h> 29 #include <media/dvb_net.h> 30 31 #include "tda1002x.h" 32 #include "mantis_common.h" 33 #include "mantis_ioc.h" 34 #include "mantis_dvb.h" 35 #include "mantis_vp2040.h" 36 37 #define MANTIS_MODEL_NAME "VP-2040" 38 #define MANTIS_DEV_TYPE "DVB-C" 39 40 static struct tda1002x_config vp2040_tda1002x_cu1216_config = { 41 .demod_address = 0x18 >> 1, 42 .invert = 1, 43 }; 44 45 static struct tda10023_config vp2040_tda10023_cu1216_config = { 46 .demod_address = 0x18 >> 1, 47 .invert = 1, 48 }; 49 50 static int tda1002x_cu1216_tuner_set(struct dvb_frontend *fe) 51 { 52 struct dtv_frontend_properties *p = &fe->dtv_property_cache; 53 struct mantis_pci *mantis = fe->dvb->priv; 54 struct i2c_adapter *adapter = &mantis->adapter; 55 56 u8 buf[6]; 57 struct i2c_msg msg = {.addr = 0x60, .flags = 0, .buf = buf, .len = sizeof(buf)}; 58 int i; 59 60 #define CU1216_IF 36125000 61 #define TUNER_MUL 62500 62 63 u32 div = (p->frequency + CU1216_IF + TUNER_MUL / 2) / TUNER_MUL; 64 65 buf[0] = (div >> 8) & 0x7f; 66 buf[1] = div & 0xff; 67 buf[2] = 0xce; 68 buf[3] = (p->frequency < 150000000 ? 0x01 : 69 p->frequency < 445000000 ? 0x02 : 0x04); 70 buf[4] = 0xde; 71 buf[5] = 0x20; 72 73 if (fe->ops.i2c_gate_ctrl) 74 fe->ops.i2c_gate_ctrl(fe, 1); 75 76 if (i2c_transfer(adapter, &msg, 1) != 1) 77 return -EIO; 78 79 /* wait for the pll lock */ 80 msg.flags = I2C_M_RD; 81 msg.len = 1; 82 for (i = 0; i < 20; i++) { 83 if (fe->ops.i2c_gate_ctrl) 84 fe->ops.i2c_gate_ctrl(fe, 1); 85 86 if (i2c_transfer(adapter, &msg, 1) == 1 && (buf[0] & 0x40)) 87 break; 88 89 msleep(10); 90 } 91 92 /* switch the charge pump to the lower current */ 93 msg.flags = 0; 94 msg.len = 2; 95 msg.buf = &buf[2]; 96 buf[2] &= ~0x40; 97 if (fe->ops.i2c_gate_ctrl) 98 fe->ops.i2c_gate_ctrl(fe, 1); 99 100 if (i2c_transfer(adapter, &msg, 1) != 1) 101 return -EIO; 102 103 return 0; 104 } 105 106 static u8 read_pwm(struct mantis_pci *mantis) 107 { 108 struct i2c_adapter *adapter = &mantis->adapter; 109 110 u8 b = 0xff; 111 u8 pwm; 112 struct i2c_msg msg[] = { 113 {.addr = 0x50, .flags = 0, .buf = &b, .len = 1}, 114 {.addr = 0x50, .flags = I2C_M_RD, .buf = &pwm, .len = 1} 115 }; 116 117 if ((i2c_transfer(adapter, msg, 2) != 2) 118 || (pwm == 0xff)) 119 pwm = 0x48; 120 121 return pwm; 122 } 123 124 static int vp2040_frontend_init(struct mantis_pci *mantis, struct dvb_frontend *fe) 125 { 126 struct i2c_adapter *adapter = &mantis->adapter; 127 128 int err = 0; 129 130 err = mantis_frontend_power(mantis, POWER_ON); 131 if (err == 0) { 132 mantis_frontend_soft_reset(mantis); 133 msleep(250); 134 135 dprintk(MANTIS_ERROR, 1, "Probing for CU1216 (DVB-C)"); 136 fe = dvb_attach(tda10021_attach, &vp2040_tda1002x_cu1216_config, 137 adapter, 138 read_pwm(mantis)); 139 140 if (fe) { 141 dprintk(MANTIS_ERROR, 1, 142 "found Philips CU1216 DVB-C frontend (TDA10021) @ 0x%02x", 143 vp2040_tda1002x_cu1216_config.demod_address); 144 } else { 145 fe = dvb_attach(tda10023_attach, &vp2040_tda10023_cu1216_config, 146 adapter, 147 read_pwm(mantis)); 148 149 if (fe) { 150 dprintk(MANTIS_ERROR, 1, 151 "found Philips CU1216 DVB-C frontend (TDA10023) @ 0x%02x", 152 vp2040_tda1002x_cu1216_config.demod_address); 153 } 154 } 155 156 if (fe) { 157 fe->ops.tuner_ops.set_params = tda1002x_cu1216_tuner_set; 158 dprintk(MANTIS_ERROR, 1, "Mantis DVB-C Philips CU1216 frontend attach success"); 159 } else { 160 return -1; 161 } 162 } else { 163 dprintk(MANTIS_ERROR, 1, "Frontend on <%s> POWER ON failed! <%d>", 164 adapter->name, 165 err); 166 167 return -EIO; 168 } 169 mantis->fe = fe; 170 dprintk(MANTIS_DEBUG, 1, "Done!"); 171 172 return 0; 173 } 174 175 struct mantis_hwconfig vp2040_config = { 176 .model_name = MANTIS_MODEL_NAME, 177 .dev_type = MANTIS_DEV_TYPE, 178 .ts_size = MANTIS_TS_204, 179 180 .baud_rate = MANTIS_BAUD_9600, 181 .parity = MANTIS_PARITY_NONE, 182 .bytes = 0, 183 184 .frontend_init = vp2040_frontend_init, 185 .power = GPIF_A12, 186 .reset = GPIF_A13, 187 }; 188