Krzysztof Halasa | 921a86e | 2010-08-12 23:14:07 +0200 | [diff] [blame] | 1 | /* |
| 2 | * SBE 2T3E3 synchronous serial card driver for Linux |
| 3 | * |
| 4 | * Copyright (C) 2009-2010 Krzysztof Halasa <khc@pm.waw.pl> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of version 2 of the GNU General Public License |
| 8 | * as published by the Free Software Foundation. |
| 9 | * |
| 10 | * This code is based on a driver written by SBE Inc. |
| 11 | */ |
| 12 | |
| 13 | #include "2t3e3.h" |
| 14 | #include "ctrl.h" |
| 15 | |
| 16 | void exar7250_init(struct channel *sc) |
| 17 | { |
| 18 | exar7250_write(sc, SBE_2T3E3_FRAMER_REG_OPERATING_MODE, |
| 19 | SBE_2T3E3_FRAMER_VAL_T3_CBIT | |
| 20 | SBE_2T3E3_FRAMER_VAL_INTERRUPT_ENABLE_RESET | |
| 21 | SBE_2T3E3_FRAMER_VAL_TIMING_ASYNCH_TXINCLK); |
| 22 | |
| 23 | exar7250_write(sc, SBE_2T3E3_FRAMER_REG_IO_CONTROL, |
| 24 | SBE_2T3E3_FRAMER_VAL_DISABLE_TX_LOSS_OF_CLOCK | |
| 25 | SBE_2T3E3_FRAMER_VAL_DISABLE_RX_LOSS_OF_CLOCK | |
| 26 | SBE_2T3E3_FRAMER_VAL_AMI_LINE_CODE | |
| 27 | SBE_2T3E3_FRAMER_VAL_RX_LINE_CLOCK_INVERT); |
| 28 | |
| 29 | exar7250_set_frame_type(sc, SBE_2T3E3_FRAME_TYPE_T3_CBIT); |
| 30 | } |
| 31 | |
| 32 | void exar7250_set_frame_type(struct channel *sc, u32 type) |
| 33 | { |
| 34 | u32 val; |
| 35 | |
| 36 | switch (type) { |
| 37 | case SBE_2T3E3_FRAME_TYPE_E3_G751: |
| 38 | case SBE_2T3E3_FRAME_TYPE_E3_G832: |
| 39 | case SBE_2T3E3_FRAME_TYPE_T3_CBIT: |
| 40 | case SBE_2T3E3_FRAME_TYPE_T3_M13: |
| 41 | break; |
| 42 | default: |
| 43 | return; |
| 44 | } |
| 45 | |
| 46 | exar7250_stop_intr(sc, type); |
| 47 | |
| 48 | val = exar7250_read(sc, SBE_2T3E3_FRAMER_REG_OPERATING_MODE); |
| 49 | val &= ~(SBE_2T3E3_FRAMER_VAL_LOCAL_LOOPBACK_MODE | |
| 50 | SBE_2T3E3_FRAMER_VAL_T3_E3_SELECT | |
| 51 | SBE_2T3E3_FRAMER_VAL_FRAME_FORMAT_SELECT); |
| 52 | switch (type) { |
| 53 | case SBE_2T3E3_FRAME_TYPE_E3_G751: |
| 54 | val |= SBE_2T3E3_FRAMER_VAL_E3_G751; |
| 55 | break; |
| 56 | case SBE_2T3E3_FRAME_TYPE_E3_G832: |
| 57 | val |= SBE_2T3E3_FRAMER_VAL_E3_G832; |
| 58 | break; |
| 59 | case SBE_2T3E3_FRAME_TYPE_T3_CBIT: |
| 60 | val |= SBE_2T3E3_FRAMER_VAL_T3_CBIT; |
| 61 | break; |
| 62 | case SBE_2T3E3_FRAME_TYPE_T3_M13: |
| 63 | val |= SBE_2T3E3_FRAMER_VAL_T3_M13; |
| 64 | break; |
| 65 | default: |
| 66 | return; |
| 67 | } |
| 68 | exar7250_write(sc, SBE_2T3E3_FRAMER_REG_OPERATING_MODE, val); |
| 69 | exar7250_start_intr(sc, type); |
| 70 | } |
| 71 | |
| 72 | |
| 73 | void exar7250_start_intr(struct channel *sc, u32 type) |
| 74 | { |
| 75 | u32 val; |
| 76 | |
| 77 | switch (type) { |
| 78 | case SBE_2T3E3_FRAME_TYPE_E3_G751: |
| 79 | case SBE_2T3E3_FRAME_TYPE_E3_G832: |
| 80 | val = exar7250_read(sc, SBE_2T3E3_FRAMER_REG_E3_RX_CONFIGURATION_STATUS_2); |
Marcos Paulo de Souza | 12f3f21 | 2012-07-17 19:41:25 -0300 | [diff] [blame] | 81 | |
Krzysztof Halasa | 921a86e | 2010-08-12 23:14:07 +0200 | [diff] [blame] | 82 | cpld_LOS_update(sc); |
Marcos Paulo de Souza | 12f3f21 | 2012-07-17 19:41:25 -0300 | [diff] [blame] | 83 | |
Krzysztof Halasa | 921a86e | 2010-08-12 23:14:07 +0200 | [diff] [blame] | 84 | sc->s.OOF = val & SBE_2T3E3_FRAMER_VAL_E3_RX_OOF ? 1 : 0; |
| 85 | exar7250_read(sc, SBE_2T3E3_FRAMER_REG_E3_RX_INTERRUPT_STATUS_1); |
| 86 | exar7250_write(sc, SBE_2T3E3_FRAMER_REG_E3_RX_INTERRUPT_ENABLE_1, |
| 87 | SBE_2T3E3_FRAMER_VAL_E3_RX_OOF_INTERRUPT_ENABLE | |
| 88 | SBE_2T3E3_FRAMER_VAL_E3_RX_LOS_INTERRUPT_ENABLE); |
Krzysztof Halasa | 921a86e | 2010-08-12 23:14:07 +0200 | [diff] [blame] | 89 | |
| 90 | exar7250_read(sc, SBE_2T3E3_FRAMER_REG_E3_RX_INTERRUPT_STATUS_2); |
Krzysztof Halasa | 921a86e | 2010-08-12 23:14:07 +0200 | [diff] [blame] | 91 | break; |
| 92 | |
| 93 | case SBE_2T3E3_FRAME_TYPE_T3_CBIT: |
| 94 | case SBE_2T3E3_FRAME_TYPE_T3_M13: |
| 95 | val = exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_RX_CONFIGURATION_STATUS); |
Marcos Paulo de Souza | 12f3f21 | 2012-07-17 19:41:25 -0300 | [diff] [blame] | 96 | |
Krzysztof Halasa | 921a86e | 2010-08-12 23:14:07 +0200 | [diff] [blame] | 97 | cpld_LOS_update(sc); |
Marcos Paulo de Souza | 12f3f21 | 2012-07-17 19:41:25 -0300 | [diff] [blame] | 98 | |
Krzysztof Halasa | 921a86e | 2010-08-12 23:14:07 +0200 | [diff] [blame] | 99 | sc->s.OOF = val & SBE_2T3E3_FRAMER_VAL_T3_RX_OOF ? 1 : 0; |
| 100 | |
| 101 | exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_RX_INTERRUPT_STATUS); |
| 102 | exar7250_write(sc, SBE_2T3E3_FRAMER_REG_T3_RX_INTERRUPT_ENABLE, |
| 103 | SBE_2T3E3_FRAMER_VAL_T3_RX_LOS_INTERRUPT_ENABLE | |
| 104 | SBE_2T3E3_FRAMER_VAL_T3_RX_OOF_INTERRUPT_ENABLE); |
Krzysztof Halasa | 921a86e | 2010-08-12 23:14:07 +0200 | [diff] [blame] | 105 | |
| 106 | exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_RX_FEAC_INTERRUPT_ENABLE_STATUS); |
Krzysztof Halasa | 921a86e | 2010-08-12 23:14:07 +0200 | [diff] [blame] | 107 | |
| 108 | exar7250_write(sc, SBE_2T3E3_FRAMER_REG_T3_RX_LAPD_CONTROL, 0); |
| 109 | break; |
| 110 | |
| 111 | default: |
| 112 | return; |
| 113 | } |
| 114 | |
| 115 | exar7250_read(sc, SBE_2T3E3_FRAMER_REG_BLOCK_INTERRUPT_STATUS); |
| 116 | exar7250_write(sc, SBE_2T3E3_FRAMER_REG_BLOCK_INTERRUPT_ENABLE, |
| 117 | SBE_2T3E3_FRAMER_VAL_RX_INTERRUPT_ENABLE | |
| 118 | SBE_2T3E3_FRAMER_VAL_TX_INTERRUPT_ENABLE); |
| 119 | } |
| 120 | |
| 121 | |
| 122 | void exar7250_stop_intr(struct channel *sc, u32 type) |
| 123 | { |
| 124 | exar7250_write(sc, SBE_2T3E3_FRAMER_REG_BLOCK_INTERRUPT_ENABLE, 0); |
| 125 | exar7250_read(sc, SBE_2T3E3_FRAMER_REG_BLOCK_INTERRUPT_STATUS); |
| 126 | |
| 127 | switch (type) { |
| 128 | case SBE_2T3E3_FRAME_TYPE_E3_G751: |
| 129 | case SBE_2T3E3_FRAME_TYPE_E3_G832: |
| 130 | exar7250_write(sc, SBE_2T3E3_FRAMER_REG_E3_RX_INTERRUPT_ENABLE_1, 0); |
| 131 | exar7250_read(sc, SBE_2T3E3_FRAMER_REG_E3_RX_INTERRUPT_STATUS_1); |
| 132 | exar7250_write(sc, SBE_2T3E3_FRAMER_REG_E3_RX_INTERRUPT_ENABLE_2, 0); |
| 133 | exar7250_read(sc, SBE_2T3E3_FRAMER_REG_E3_RX_INTERRUPT_STATUS_2); |
| 134 | exar7250_write(sc, SBE_2T3E3_FRAMER_REG_E3_RX_LAPD_CONTROL, 0); |
| 135 | exar7250_read(sc, SBE_2T3E3_FRAMER_REG_E3_RX_LAPD_CONTROL); |
| 136 | exar7250_write(sc, SBE_2T3E3_FRAMER_REG_E3_TX_LAPD_STATUS, 0); |
| 137 | exar7250_read(sc, SBE_2T3E3_FRAMER_REG_E3_TX_LAPD_STATUS); |
| 138 | break; |
| 139 | |
| 140 | case SBE_2T3E3_FRAME_TYPE_T3_CBIT: |
| 141 | case SBE_2T3E3_FRAME_TYPE_T3_M13: |
| 142 | exar7250_write(sc, SBE_2T3E3_FRAMER_REG_T3_RX_INTERRUPT_ENABLE, 0); |
| 143 | exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_RX_INTERRUPT_STATUS); |
| 144 | exar7250_write(sc, SBE_2T3E3_FRAMER_REG_T3_RX_FEAC_INTERRUPT_ENABLE_STATUS, 0); |
| 145 | exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_RX_FEAC_INTERRUPT_ENABLE_STATUS); |
| 146 | exar7250_write(sc, SBE_2T3E3_FRAMER_REG_T3_RX_LAPD_CONTROL, 0); |
| 147 | exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_RX_LAPD_CONTROL); |
| 148 | exar7250_write(sc, SBE_2T3E3_FRAMER_REG_T3_TX_FEAC_CONFIGURATION_STATUS, 0); |
| 149 | exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_TX_FEAC_CONFIGURATION_STATUS); |
| 150 | exar7250_write(sc, SBE_2T3E3_FRAMER_REG_T3_TX_LAPD_STATUS, 0); |
| 151 | exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_TX_LAPD_STATUS); |
| 152 | break; |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | |
| 157 | |
| 158 | |
| 159 | void exar7250_unipolar_onoff(struct channel *sc, u32 mode) |
| 160 | { |
| 161 | switch (mode) { |
| 162 | case SBE_2T3E3_OFF: |
| 163 | exar7300_clear_bit(sc, SBE_2T3E3_FRAMER_REG_IO_CONTROL, |
| 164 | SBE_2T3E3_FRAMER_VAL_UNIPOLAR); |
| 165 | break; |
| 166 | case SBE_2T3E3_ON: |
| 167 | exar7300_set_bit(sc, SBE_2T3E3_FRAMER_REG_IO_CONTROL, |
| 168 | SBE_2T3E3_FRAMER_VAL_UNIPOLAR); |
| 169 | break; |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | void exar7250_set_loopback(struct channel *sc, u32 mode) |
| 174 | { |
| 175 | switch (mode) { |
| 176 | case SBE_2T3E3_FRAMER_VAL_LOOPBACK_OFF: |
| 177 | exar7300_clear_bit(sc, SBE_2T3E3_FRAMER_REG_OPERATING_MODE, |
| 178 | SBE_2T3E3_FRAMER_VAL_LOCAL_LOOPBACK_MODE); |
| 179 | break; |
| 180 | case SBE_2T3E3_FRAMER_VAL_LOOPBACK_ON: |
| 181 | exar7300_set_bit(sc, SBE_2T3E3_FRAMER_REG_OPERATING_MODE, |
| 182 | SBE_2T3E3_FRAMER_VAL_LOCAL_LOOPBACK_MODE); |
| 183 | break; |
| 184 | } |
| 185 | } |