1 /* 2 * Copyright (C) 2015 Google, Inc 3 * Written by Simon Glass <sjg@chromium.org> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <common.h> 9 #include <clk.h> 10 #include <dm.h> 11 #include <errno.h> 12 #include <dm/lists.h> 13 #include <dm/root.h> 14 15 ulong clk_get_rate(struct udevice *dev) 16 { 17 struct clk_ops *ops = clk_get_ops(dev); 18 19 if (!ops->get_rate) 20 return -ENOSYS; 21 22 return ops->get_rate(dev); 23 } 24 25 ulong clk_set_rate(struct udevice *dev, ulong rate) 26 { 27 struct clk_ops *ops = clk_get_ops(dev); 28 29 if (!ops->set_rate) 30 return -ENOSYS; 31 32 return ops->set_rate(dev, rate); 33 } 34 35 int clk_enable(struct udevice *dev, int periph) 36 { 37 struct clk_ops *ops = clk_get_ops(dev); 38 39 if (!ops->enable) 40 return -ENOSYS; 41 42 return ops->enable(dev, periph); 43 } 44 45 ulong clk_get_periph_rate(struct udevice *dev, int periph) 46 { 47 struct clk_ops *ops = clk_get_ops(dev); 48 49 if (!ops->get_periph_rate) 50 return -ENOSYS; 51 52 return ops->get_periph_rate(dev, periph); 53 } 54 55 ulong clk_set_periph_rate(struct udevice *dev, int periph, ulong rate) 56 { 57 struct clk_ops *ops = clk_get_ops(dev); 58 59 if (!ops->set_periph_rate) 60 return -ENOSYS; 61 62 return ops->set_periph_rate(dev, periph, rate); 63 } 64 65 UCLASS_DRIVER(clk) = { 66 .id = UCLASS_CLK, 67 .name = "clk", 68 }; 69