1 /* 2 * Copyright (c) 2021, STMicroelectronics - All Rights Reserved 3 * Author(s): Ludovic Barre, <ludovic.barre@st.com> for STMicroelectronics. 4 * 5 * SPDX-License-Identifier: BSD-3-Clause 6 */ 7 8 #include <assert.h> 9 #include <errno.h> 10 #include <stdbool.h> 11 12 #include <drivers/clk.h> 13 14 static const struct clk_ops *ops; 15 16 int clk_enable(unsigned long id) 17 { 18 assert((ops != NULL) && (ops->enable != NULL)); 19 20 return ops->enable(id); 21 } 22 23 void clk_disable(unsigned long id) 24 { 25 assert((ops != NULL) && (ops->disable != NULL)); 26 27 ops->disable(id); 28 } 29 30 unsigned long clk_get_rate(unsigned long id) 31 { 32 assert((ops != NULL) && (ops->get_rate != NULL)); 33 34 return ops->get_rate(id); 35 } 36 37 int clk_get_parent(unsigned long id) 38 { 39 assert((ops != NULL) && (ops->get_parent != NULL)); 40 41 return ops->get_parent(id); 42 } 43 44 int clk_set_parent(unsigned long id, unsigned long parent_id) 45 { 46 assert((ops != NULL) && (ops->set_parent != NULL)); 47 48 return ops->set_parent(id, parent_id); 49 } 50 51 bool clk_is_enabled(unsigned long id) 52 { 53 assert((ops != NULL) && (ops->is_enabled != NULL)); 54 55 return ops->is_enabled(id); 56 } 57 58 /* 59 * Initialize the clk. The fields in the provided clk 60 * ops pointer must be valid. 61 */ 62 void clk_register(const struct clk_ops *ops_ptr) 63 { 64 assert((ops_ptr != NULL) && 65 (ops_ptr->enable != NULL) && 66 (ops_ptr->disable != NULL) && 67 (ops_ptr->get_rate != NULL) && 68 (ops_ptr->get_parent != NULL) && 69 (ops_ptr->is_enabled != NULL)); 70 71 ops = ops_ptr; 72 } 73