| paul@0 | 1 | /* |
| paul@0 | 2 | * (c) 2018 Paul Boddie <paul@boddie.org.uk> |
| paul@0 | 3 | * |
| paul@0 | 4 | * This program is free software; you can redistribute it and/or |
| paul@0 | 5 | * modify it under the terms of the GNU General Public License as |
| paul@0 | 6 | * published by the Free Software Foundation; either version 2 of |
| paul@0 | 7 | * the License, or (at your option) any later version. |
| paul@0 | 8 | * |
| paul@0 | 9 | * This program is distributed in the hope that it will be useful, |
| paul@0 | 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| paul@0 | 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| paul@0 | 12 | * GNU General Public License for more details. |
| paul@0 | 13 | * |
| paul@0 | 14 | * You should have received a copy of the GNU General Public License |
| paul@0 | 15 | * along with this program; if not, write to the Free Software |
| paul@0 | 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| paul@0 | 17 | * Boston, MA 02110-1301, USA |
| paul@0 | 18 | */ |
| paul@0 | 19 | |
| paul@0 | 20 | #pragma once |
| paul@0 | 21 | |
| paul@0 | 22 | #include <l4/sys/types.h> |
| paul@0 | 23 | #include <stdint.h> |
| paul@0 | 24 | |
| paul@0 | 25 | |
| paul@0 | 26 | |
| paul@0 | 27 | /* Value types. */ |
| paul@0 | 28 | |
| paul@0 | 29 | enum Jz4730_pwm_shutdown_mode |
| paul@0 | 30 | { |
| paul@0 | 31 | Jz4730_pwm_shutdown_graceful = 0, |
| paul@0 | 32 | Jz4730_pwm_shutdown_abrupt = 1, |
| paul@0 | 33 | }; |
| paul@0 | 34 | |
| paul@0 | 35 | |
| paul@0 | 36 | |
| paul@0 | 37 | #ifdef __cplusplus |
| paul@0 | 38 | |
| paul@0 | 39 | #include <l4/devices/hw_register_block.h> |
| paul@0 | 40 | |
| paul@0 | 41 | /* A simple abstraction for accessing the PWM registers. */ |
| paul@0 | 42 | |
| paul@0 | 43 | class Pwm_jz4730_chip |
| paul@0 | 44 | { |
| paul@0 | 45 | private: |
| paul@0 | 46 | l4_addr_t _start, _end; |
| paul@0 | 47 | Hw::Register_block<32> _regs; |
| paul@0 | 48 | |
| paul@0 | 49 | public: |
| paul@0 | 50 | Pwm_jz4730_chip(l4_addr_t start, l4_addr_t end); |
| paul@0 | 51 | |
| paul@0 | 52 | void disable(); |
| paul@0 | 53 | void enable(); |
| paul@0 | 54 | void set_shutdown_mode(enum Jz4730_pwm_shutdown_mode mode); |
| paul@0 | 55 | |
| paul@0 | 56 | void set_control(uint8_t control); |
| paul@0 | 57 | void set_duty(uint16_t duty); |
| paul@0 | 58 | void set_period(uint16_t period); |
| paul@0 | 59 | }; |
| paul@0 | 60 | |
| paul@0 | 61 | #endif /* __cplusplus */ |
| paul@0 | 62 | |
| paul@0 | 63 | |
| paul@0 | 64 | |
| paul@0 | 65 | /* C language interface. */ |
| paul@0 | 66 | |
| paul@0 | 67 | EXTERN_C_BEGIN |
| paul@0 | 68 | |
| paul@0 | 69 | void *jz4730_pwm_init(l4_addr_t start, l4_addr_t end); |
| paul@0 | 70 | |
| paul@0 | 71 | void jz4730_pwm_disable(void *pwm); |
| paul@0 | 72 | void jz4730_pwm_enable(void *pwm); |
| paul@0 | 73 | void jz4730_pwm_set_shutdown_mode(void *pwm, enum Jz4730_pwm_shutdown_mode mode); |
| paul@0 | 74 | |
| paul@0 | 75 | void jz4730_pwm_set_control(void *pwm, uint8_t control); |
| paul@0 | 76 | void jz4730_pwm_set_duty(void *pwm, uint16_t duty); |
| paul@0 | 77 | void jz4730_pwm_set_period(void *pwm, uint16_t period); |
| paul@0 | 78 | |
| paul@0 | 79 | EXTERN_C_END |
