/* * $Id$ * * ADM5120 minimal CLK API implementation * * Copyright (C) 2007 OpenWrt.org * Copyright (C) 2007 Gabor Juhos <juhosg@freemail.hu> * * This file was based on the CLK API implementation in: * arch/mips/tx4938/toshiba_rbtx4938/setup.c * Copyright (C) 2000-2001 Toshiba Corporation * 2003-2005 (c) MontaVista Software, Inc. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301, USA. * */ #include <linux/kernel.h> #include <linux/string.h> #include <linux/module.h> #include <linux/err.h> #include <linux/clk.h> #include <asm/mach-adm5120/adm5120_defs.h> struct clk { unsigned long rate; }; static struct clk uart_clk = { .rate = ADM5120_UART_CLOCK }; struct clk *clk_get(struct device *dev, const char *id) { if (!strcmp(id, "UARTCLK")) return &uart_clk; return ERR_PTR(-ENOENT); } EXPORT_SYMBOL(clk_get); int clk_enable(struct clk *clk) { return 0; } EXPORT_SYMBOL(clk_enable); void clk_disable(struct clk *clk) { } EXPORT_SYMBOL(clk_disable); unsigned long clk_get_rate(struct clk *clk) { return clk->rate; } EXPORT_SYMBOL(clk_get_rate); void clk_put(struct clk *clk) { } EXPORT_SYMBOL(clk_put);