| 1 | /* |
| 2 | * ADM5120 minimal CLK API implementation |
| 3 | * |
| 4 | * Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org> |
| 5 | * |
| 6 | * This file was based on the CLK API implementation in: |
| 7 | * arch/mips/tx4938/toshiba_rbtx4938/setup.c |
| 8 | * Copyright (C) 2000-2001 Toshiba Corporation |
| 9 | * 2003-2005 (c) MontaVista Software, Inc. |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify it |
| 12 | * under the terms of the GNU General Public License version 2 as published |
| 13 | * by the Free Software Foundation. |
| 14 | * |
| 15 | */ |
| 16 | |
| 17 | #include <linux/kernel.h> |
| 18 | #include <linux/string.h> |
| 19 | #include <linux/module.h> |
| 20 | #include <linux/err.h> |
| 21 | #include <linux/clk.h> |
| 22 | #include <linux/device.h> |
| 23 | |
| 24 | #include <asm/mach-adm5120/adm5120_defs.h> |
| 25 | |
| 26 | struct clk { |
| 27 | unsigned long rate; |
| 28 | }; |
| 29 | |
| 30 | static struct clk uart_clk = { |
| 31 | .rate = ADM5120_UART_CLOCK |
| 32 | }; |
| 33 | |
| 34 | struct clk *clk_get(struct device *dev, const char *id) |
| 35 | { |
| 36 | char *name = dev_name(dev); |
| 37 | |
| 38 | if (!strcmp(name, "apb:uart0") || !strcmp(name, "apb:uart1")) |
| 39 | return &uart_clk; |
| 40 | |
| 41 | return ERR_PTR(-ENOENT); |
| 42 | } |
| 43 | EXPORT_SYMBOL(clk_get); |
| 44 | |
| 45 | int clk_enable(struct clk *clk) |
| 46 | { |
| 47 | return 0; |
| 48 | } |
| 49 | EXPORT_SYMBOL(clk_enable); |
| 50 | |
| 51 | void clk_disable(struct clk *clk) |
| 52 | { |
| 53 | } |
| 54 | EXPORT_SYMBOL(clk_disable); |
| 55 | |
| 56 | unsigned long clk_get_rate(struct clk *clk) |
| 57 | { |
| 58 | return clk->rate; |
| 59 | } |
| 60 | EXPORT_SYMBOL(clk_get_rate); |
| 61 | |
| 62 | void clk_put(struct clk *clk) |
| 63 | { |
| 64 | } |
| 65 | EXPORT_SYMBOL(clk_put); |
| 66 | |
