diff options
Diffstat (limited to 'arch/arm/mach-omap2/clkt2xxx_sys.c')
-rw-r--r-- | arch/arm/mach-omap2/clkt2xxx_sys.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/clkt2xxx_sys.c b/arch/arm/mach-omap2/clkt2xxx_sys.c new file mode 100644 index 000000000000..822b5a79f457 --- /dev/null +++ b/arch/arm/mach-omap2/clkt2xxx_sys.c @@ -0,0 +1,50 @@ +/* + * 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 "prm.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(); +} + + |