Sylvain Munaut | bc9f5c4 | 2020-09-14 10:22:29 +0200 | [diff] [blame] | 1 | /* |
| 2 | * misc.c |
| 3 | * |
| 4 | * Copyright (C) 2019-2020 Sylvain Munaut <tnt@246tNt.com> |
| 5 | * SPDX-License-Identifier: GPL-3.0-or-later |
| 6 | */ |
| 7 | |
| 8 | #include <stdbool.h> |
| 9 | #include <stdint.h> |
| 10 | |
| 11 | #include "config.h" |
| 12 | #include "misc.h" |
Harald Welte | 5276567 | 2020-12-15 18:35:42 +0100 | [diff] [blame] | 13 | #include "e1.h" |
Sylvain Munaut | bc9f5c4 | 2020-09-14 10:22:29 +0200 | [diff] [blame] | 14 | |
| 15 | |
| 16 | struct misc { |
| 17 | uint32_t warmboot; |
Sylvain Munaut | be5a53a | 2022-01-11 11:08:25 +0100 | [diff] [blame] | 18 | struct { |
| 19 | uint16_t oe_out; |
| 20 | uint8_t in; |
| 21 | uint8_t _rsvd; |
| 22 | } gpio; |
Sylvain Munaut | bc9f5c4 | 2020-09-14 10:22:29 +0200 | [diff] [blame] | 23 | uint32_t e1_led; |
| 24 | uint32_t _rsvd; |
| 25 | struct { |
Sylvain Munaut | bc9f5c4 | 2020-09-14 10:22:29 +0200 | [diff] [blame] | 26 | uint16_t rx; |
Sylvain Munaut | c1d117b | 2020-09-15 21:57:52 +0200 | [diff] [blame] | 27 | uint16_t tx; |
Sylvain Munaut | bc9f5c4 | 2020-09-14 10:22:29 +0200 | [diff] [blame] | 28 | } e1_tick[2]; |
Sylvain Munaut | 1ac458f | 2020-09-15 22:06:00 +0200 | [diff] [blame] | 29 | struct { |
| 30 | uint32_t pps; |
| 31 | uint32_t now; |
| 32 | } time; |
Sylvain Munaut | bc9f5c4 | 2020-09-14 10:22:29 +0200 | [diff] [blame] | 33 | uint32_t pdm[8]; |
| 34 | } __attribute__((packed,aligned(4))); |
| 35 | |
| 36 | static volatile struct misc * const misc_regs = (void*)(MISC_BASE); |
| 37 | |
| 38 | |
| 39 | static const int pdm_bits[5] = { 12, 12, 8, 8, 8 }; |
| 40 | |
| 41 | |
| 42 | void |
| 43 | pdm_set(int chan, bool enable, unsigned value, bool normalize) |
| 44 | { |
| 45 | if (normalize) |
| 46 | value >>= (16 - pdm_bits[chan]); |
| 47 | if (enable) |
| 48 | value |= 0x80000000; |
| 49 | misc_regs->pdm[chan] = value; |
| 50 | } |
| 51 | |
| 52 | |
Sylvain Munaut | 5e86047 | 2020-09-15 22:20:21 +0200 | [diff] [blame] | 53 | void |
Sylvain Munaut | be5a53a | 2022-01-11 11:08:25 +0100 | [diff] [blame] | 54 | gpio_dir(int n, bool output) |
| 55 | { |
| 56 | uint16_t mask = 256 << n; |
| 57 | |
| 58 | if (output) |
| 59 | misc_regs->gpio.oe_out |= mask; |
| 60 | else |
| 61 | misc_regs->gpio.oe_out &= ~mask; |
| 62 | } |
| 63 | |
| 64 | void |
| 65 | gpio_out(int n, bool val) |
| 66 | { |
| 67 | uint16_t mask = 1 << n; |
| 68 | |
| 69 | if (val) |
| 70 | misc_regs->gpio.oe_out |= mask; |
| 71 | else |
| 72 | misc_regs->gpio.oe_out &= ~mask; |
| 73 | } |
| 74 | |
| 75 | bool |
| 76 | gpio_in(int n) |
| 77 | { |
| 78 | return (misc_regs->gpio.in & (1 << n)) != 0; |
| 79 | } |
| 80 | |
| 81 | |
| 82 | void |
Sylvain Munaut | 394748a | 2022-01-11 11:06:28 +0100 | [diff] [blame] | 83 | e1_led_run(void) |
| 84 | { |
| 85 | misc_regs->e1_led |= 0x100; |
| 86 | } |
| 87 | |
| 88 | void |
| 89 | e1_led_pause(void) |
| 90 | { |
| 91 | misc_regs->e1_led &= 0xff; |
| 92 | } |
| 93 | |
| 94 | void |
Sylvain Munaut | 5e86047 | 2020-09-15 22:20:21 +0200 | [diff] [blame] | 95 | e1_led_set(bool enable, uint8_t cfg) |
| 96 | { |
| 97 | misc_regs->e1_led = (enable ? 0x100 : 0x000) | cfg; |
| 98 | } |
| 99 | |
Harald Welte | 5276567 | 2020-12-15 18:35:42 +0100 | [diff] [blame] | 100 | void |
Sylvain Munaut | 8f31a9e | 2022-01-03 22:09:03 +0100 | [diff] [blame] | 101 | e1_platform_led_set(int port, enum e1_platform_led led, |
Harald Welte | 5276567 | 2020-12-15 18:35:42 +0100 | [diff] [blame] | 102 | enum e1_platform_led_state state) |
| 103 | { |
| 104 | uint32_t tmp; |
| 105 | unsigned int shift; |
| 106 | |
| 107 | if (port >= 2) |
| 108 | return; |
| 109 | |
| 110 | shift = 4*port + 2*led; |
| 111 | |
| 112 | tmp = misc_regs->e1_led; |
| 113 | tmp &= ~(3 << shift); |
Sylvain Munaut | 394748a | 2022-01-11 11:06:28 +0100 | [diff] [blame] | 114 | tmp |= ((state & 3) << shift); |
Harald Welte | 5276567 | 2020-12-15 18:35:42 +0100 | [diff] [blame] | 115 | misc_regs->e1_led = tmp; |
| 116 | } |
| 117 | |
Sylvain Munaut | 394748a | 2022-01-11 11:06:28 +0100 | [diff] [blame] | 118 | |
Sylvain Munaut | bc9f5c4 | 2020-09-14 10:22:29 +0200 | [diff] [blame] | 119 | uint16_t |
Sylvain Munaut | 436b775 | 2022-01-03 22:09:54 +0100 | [diff] [blame] | 120 | e1_tick_read(int port) |
Sylvain Munaut | bc9f5c4 | 2020-09-14 10:22:29 +0200 | [diff] [blame] | 121 | { |
Sylvain Munaut | 436b775 | 2022-01-03 22:09:54 +0100 | [diff] [blame] | 122 | return misc_regs->e1_tick[port].tx; |
Sylvain Munaut | bc9f5c4 | 2020-09-14 10:22:29 +0200 | [diff] [blame] | 123 | } |
Sylvain Munaut | 46d6b41 | 2020-10-29 13:19:05 +0100 | [diff] [blame] | 124 | |
Sylvain Munaut | 00b5762 | 2022-01-11 11:10:49 +0100 | [diff] [blame] | 125 | |
| 126 | bool |
| 127 | time_elapsed(uint32_t ref, unsigned int tick) |
| 128 | { |
| 129 | return ((misc_regs->time.now - ref) & 0x7fffffff) >= tick; |
| 130 | } |
| 131 | |
| 132 | void |
| 133 | delay(unsigned int ms) |
| 134 | { |
| 135 | uint32_t ref = misc_regs->time.now; |
| 136 | ms *= SYS_CLK_FREQ / 1000; |
| 137 | while (!time_elapsed(ref, ms)); |
| 138 | } |
| 139 | |
| 140 | uint32_t |
| 141 | time_pps_read(void) |
| 142 | { |
| 143 | return misc_regs->time.pps; |
| 144 | } |
| 145 | |
| 146 | uint32_t |
| 147 | time_now_read(void) |
| 148 | { |
| 149 | return misc_regs->time.now; |
| 150 | } |
| 151 | |
| 152 | |
Sylvain Munaut | 46d6b41 | 2020-10-29 13:19:05 +0100 | [diff] [blame] | 153 | void |
| 154 | reboot(int fw) |
| 155 | { |
| 156 | misc_regs->warmboot = (1 << 2) | (fw << 0); |
| 157 | } |