1 /* 2 * CPM (clock and power management) support for the JZ4780. 3 * 4 * Copyright (C) 2017, 2018, 2020, 2021, 2023, 5 * 2024 Paul Boddie <paul@boddie.org.uk> 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License as 9 * published by the Free Software Foundation; either version 2 of 10 * the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, 20 * Boston, MA 02110-1301, USA 21 */ 22 23 #pragma once 24 25 #include <l4/devices/clocks.h> 26 #include <l4/sys/types.h> 27 #include <stdint.h> 28 29 30 31 /* JZ4780-specific clocks. */ 32 33 enum Clock_jz4780_identifiers 34 { 35 Clock_jz4780_identifier_base = Clock_specific_start, 36 Clock_usb_phy_12MHz = Clock_specific_start, 37 Clock_usb_phy_19_2MHz, 38 Clock_usb_phy_24MHz, 39 Clock_usb_phy_48MHz, 40 Clock_jz4780_identifier_count, /* not a clock: limit for array definition */ 41 }; 42 43 44 45 #ifdef __cplusplus 46 47 #include <l4/devices/cpm-generic.h> 48 49 class Cpm_jz4780_chip : public Cpm_chip 50 { 51 public: 52 explicit Cpm_jz4780_chip(l4_addr_t addr); 53 }; 54 55 Cpm_chip *jz4780_cpm_chip(l4_addr_t cpm_base); 56 57 #endif /* __cplusplus */ 58 59 60 61 /* C language interface. */ 62 63 EXTERN_C_BEGIN 64 65 void *jz4780_cpm_init(l4_addr_t cpm_base); 66 67 const char *jz4780_cpm_clock_type(void *cpm, enum Clock_identifiers clock); 68 69 int jz4780_cpm_have_clock(void *cpm, enum Clock_identifiers clock); 70 void jz4780_cpm_start_clock(void *cpm, enum Clock_identifiers clock); 71 void jz4780_cpm_stop_clock(void *cpm, enum Clock_identifiers clock); 72 73 int jz4780_cpm_get_parameters(void *cpm, enum Clock_identifiers clock, 74 uint32_t parameters[]); 75 int jz4780_cpm_set_parameters(void *cpm, enum Clock_identifiers clock, 76 int num_parameters, uint32_t parameters[]); 77 78 uint8_t jz4780_cpm_get_source(void *cpm, enum Clock_identifiers clock); 79 void jz4780_cpm_set_source(void *cpm, enum Clock_identifiers clock, uint8_t source); 80 enum Clock_identifiers jz4780_cpm_get_source_clock(void *cpm, enum Clock_identifiers clock); 81 void jz4780_cpm_set_source_clock(void *cpm, enum Clock_identifiers clock, enum Clock_identifiers source); 82 83 uint64_t jz4780_cpm_get_source_frequency(void *cpm, enum Clock_identifiers clock); 84 85 uint64_t jz4780_cpm_get_frequency(void *cpm, enum Clock_identifiers clock); 86 int jz4780_cpm_set_frequency(void *cpm, enum Clock_identifiers clock, uint64_t frequency); 87 88 EXTERN_C_END