| /* |
| * OMAP2xxx sys_clk-specific clock code |
| * |
| * Copyright (C) 2005-2008 Texas Instruments, Inc. |
| * Copyright (C) 2004-2010 Nokia Corporation |
| * |
| * Contacts: |
| * Richard Woodruff <r-woodruff2@ti.com> |
| * Paul Walmsley |
| * |
| * Based on earlier work by Tuukka Tikkanen, Tony Lindgren, |
| * Gordon McNutt and RidgeRun, Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| #undef DEBUG |
| |
| #include <linux/kernel.h> |
| #include <linux/errno.h> |
| #include <linux/clk.h> |
| #include <linux/io.h> |
| |
| #include <plat/clock.h> |
| |
| #include "clock.h" |
| #include "clock2xxx.h" |
| #include "prm2xxx_3xxx.h" |
| #include "prm-regbits-24xx.h" |
| |
| void __iomem *prcm_clksrc_ctrl; |
| |
| u32 omap2xxx_get_sysclkdiv(void) |
| { |
| u32 div; |
| |
| div = __raw_readl(prcm_clksrc_ctrl); |
| div &= OMAP_SYSCLKDIV_MASK; |
| div >>= OMAP_SYSCLKDIV_SHIFT; |
| |
| return div; |
| } |
| |
| unsigned long omap2xxx_sys_clk_recalc(struct clk *clk) |
| { |
| return clk->parent->rate / omap2xxx_get_sysclkdiv(); |
| } |
| |
| |