1 /* 2 * CPM (clock and power management) support for the JZ4780. 3 * 4 * Copyright (C) 2017, 2018, 2020, 2021, 2023 Paul Boddie <paul@boddie.org.uk> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of 9 * the License, or (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., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA 20 */ 21 22 #pragma once 23 24 #include <l4/devices/clocks.h> 25 #include <l4/sys/types.h> 26 #include <stdint.h> 27 28 29 30 /* JZ4780-specific clocks. */ 31 32 enum Clock_jz4780_identifiers 33 { 34 Clock_jz4780_identifier_base = Clock_specific_start, 35 Clock_usb_phy_12MHz = Clock_specific_start, 36 Clock_usb_phy_19_2MHz, 37 Clock_usb_phy_24MHz, 38 Clock_usb_phy_48MHz, 39 Clock_jz4780_identifier_count, /* not a clock: limit for array definition */ 40 }; 41 42 43 44 #ifdef __cplusplus 45 46 #include <l4/devices/cpm.h> 47 48 class Cpm_jz4780_chip : public Cpm_chip 49 { 50 public: 51 explicit Cpm_jz4780_chip(l4_addr_t addr); 52 }; 53 54 #endif /* __cplusplus */ 55 56 57 58 /* C language interface. */ 59 60 EXTERN_C_BEGIN 61 62 void *jz4780_cpm_init(l4_addr_t cpm_base); 63 64 const char *jz4780_cpm_clock_type(void *cpm, enum Clock_identifiers clock); 65 66 int jz4780_cpm_have_clock(void *cpm, enum Clock_identifiers clock); 67 void jz4780_cpm_start_clock(void *cpm, enum Clock_identifiers clock); 68 void jz4780_cpm_stop_clock(void *cpm, enum Clock_identifiers clock); 69 70 int jz4780_cpm_get_parameters(void *cpm, enum Clock_identifiers clock, 71 uint32_t parameters[]); 72 int jz4780_cpm_set_parameters(void *cpm, enum Clock_identifiers clock, 73 int num_parameters, uint32_t parameters[]); 74 75 uint8_t jz4780_cpm_get_source(void *cpm, enum Clock_identifiers clock); 76 void jz4780_cpm_set_source(void *cpm, enum Clock_identifiers clock, uint8_t source); 77 enum Clock_identifiers jz4780_cpm_get_source_clock(void *cpm, enum Clock_identifiers clock); 78 void jz4780_cpm_set_source_clock(void *cpm, enum Clock_identifiers clock, enum Clock_identifiers source); 79 80 uint64_t jz4780_cpm_get_source_frequency(void *cpm, enum Clock_identifiers clock); 81 82 uint64_t jz4780_cpm_get_frequency(void *cpm, enum Clock_identifiers clock); 83 int jz4780_cpm_set_frequency(void *cpm, enum Clock_identifiers clock, uint64_t frequency); 84 85 EXTERN_C_END