projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 44da0a51 PW |
1 | /* |
| 2 | * OMAP2xxx sys_clk-specific clock code | |
| 3 | * | |
| 4 | * Copyright (C) 2005-2008 Texas Instruments, Inc. | |
| 5 | * Copyright (C) 2004-2010 Nokia Corporation | |
| 6 | * | |
| 7 | * Contacts: | |
| 8 | * Richard Woodruff <r-woodruff2@ti.com> | |
| 9 | * Paul Walmsley | |
| 10 | * | |
| 11 | * Based on earlier work by Tuukka Tikkanen, Tony Lindgren, | |
| 12 | * Gordon McNutt and RidgeRun, Inc. | |
| 13 | * | |
| 14 | * This program is free software; you can redistribute it and/or modify | |
| 15 | * it under the terms of the GNU General Public License version 2 as | |
| 16 | * published by the Free Software Foundation. | |
| 17 | */ | |
| 18 | #undef DEBUG | |
| 19 | ||
| 20 | #include <linux/kernel.h> | |
| 21 | #include <linux/errno.h> | |
| 22 | #include <linux/clk.h> | |
| 23 | #include <linux/io.h> | |
| 24 | ||
| 44da0a51 PW |
25 | #include "clock.h" |
| 26 | #include "clock2xxx.h" | |
| 59fb659b | 27 | #include "prm2xxx_3xxx.h" |
| 44da0a51 PW |
28 | #include "prm-regbits-24xx.h" |
| 29 | ||
| 30 | void __iomem *prcm_clksrc_ctrl; | |
| 31 | ||
| 32 | u32 omap2xxx_get_sysclkdiv(void) | |
| 33 | { | |
| 34 | u32 div; | |
| 35 | ||
| 36 | div = __raw_readl(prcm_clksrc_ctrl); | |
| 37 | div &= OMAP_SYSCLKDIV_MASK; | |
| 38 | div >>= OMAP_SYSCLKDIV_SHIFT; | |
| 39 | ||
| 40 | return div; | |
| 41 | } | |
| 42 | ||
| ed1ebc49 RN |
43 | unsigned long omap2xxx_sys_clk_recalc(struct clk_hw *clk, |
| 44 | unsigned long parent_rate) | |
| 45 | { | |
| 46 | return parent_rate / omap2xxx_get_sysclkdiv(); | |
| 47 | } |