diff options
Diffstat (limited to 'arch/arm/mach-lh7a40x/clocks.c')
| -rw-r--r-- | arch/arm/mach-lh7a40x/clocks.c | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/arch/arm/mach-lh7a40x/clocks.c b/arch/arm/mach-lh7a40x/clocks.c deleted file mode 100644 index 4fb23ac6b5a..00000000000 --- a/arch/arm/mach-lh7a40x/clocks.c +++ /dev/null @@ -1,198 +0,0 @@ -/* arch/arm/mach-lh7a40x/clocks.c - * - * Copyright (C) 2004 Marc Singer - * - * 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. - * - */ - -#include <linux/cpufreq.h> -#include <mach/hardware.h> -#include <mach/clocks.h> -#include <linux/err.h> - -struct module; -struct icst525_params; - -struct clk { - struct list_head node; - unsigned long rate; - struct module *owner; - const char *name; -// void *data; -// const struct icst525_params *params; -// void (*setvco)(struct clk *, struct icst525_vco vco); -}; - -int clk_register(struct clk *clk); -void clk_unregister(struct clk *clk); - -/* ----- */ - -#define MAINDIV1(c) (((c) >> 7) & 0x0f) -#define MAINDIV2(c) (((c) >> 11) & 0x1f) -#define PS(c) (((c) >> 18) & 0x03) -#define PREDIV(c) (((c) >> 2) & 0x1f) -#define HCLKDIV(c) (((c) >> 0) & 0x02) -#define PCLKDIV(c) (((c) >> 16) & 0x03) - -unsigned int cpufreq_get (unsigned int cpu) /* in kHz */ -{ - return fclkfreq_get ()/1000; -} -EXPORT_SYMBOL(cpufreq_get); - -unsigned int fclkfreq_get (void) -{ - unsigned int clkset = CSC_CLKSET; - unsigned int gclk - = XTAL_IN - / (1 << PS(clkset)) - * (MAINDIV1(clkset) + 2) - / (PREDIV(clkset) + 2) - * (MAINDIV2(clkset) + 2) - ; - return gclk; -} - -unsigned int hclkfreq_get (void) -{ - unsigned int clkset = CSC_CLKSET; - unsigned int hclk = fclkfreq_get () / (HCLKDIV(clkset) + 1); - - return hclk; -} - -unsigned int pclkfreq_get (void) -{ - unsigned int clkset = CSC_CLKSET; - int pclkdiv = PCLKDIV(clkset); - unsigned int pclk; - if (pclkdiv == 0x3) - pclkdiv = 0x2; - pclk = hclkfreq_get () / (1 << pclkdiv); - - return pclk; -} - -/* ----- */ - -static LIST_HEAD(clocks); -static DECLARE_MUTEX(clocks_sem); - -struct clk *clk_get (struct device *dev, const char *id) -{ - struct clk *p; - struct clk *clk = ERR_PTR(-ENOENT); - - down (&clocks_sem); - list_for_each_entry (p, &clocks, node) { - if (strcmp (id, p->name) == 0 - && try_module_get(p->owner)) { - clk = p; - break; - } - } - up (&clocks_sem); - - return clk; -} -EXPORT_SYMBOL(clk_get); - -void clk_put (struct clk *clk) -{ - module_put(clk->owner); -} -EXPORT_SYMBOL(clk_put); - -int clk_enable (struct clk *clk) -{ - return 0; -} -EXPORT_SYMBOL(clk_enable); - -void clk_disable (struct clk *clk) -{ -} -EXPORT_SYMBOL(clk_disable); - -int clk_use (struct clk *clk) -{ - return 0; -} -EXPORT_SYMBOL(clk_use); - -void clk_unuse (struct clk *clk) -{ -} -EXPORT_SYMBOL(clk_unuse); - -unsigned long clk_get_rate (struct clk *clk) -{ - return clk->rate; -} -EXPORT_SYMBOL(clk_get_rate); - -long clk_round_rate (struct clk *clk, unsigned long rate) -{ - return rate; -} -EXPORT_SYMBOL(clk_round_rate); - -int clk_set_rate (struct clk *clk, unsigned long rate) -{ - int ret = -EIO; - return ret; -} -EXPORT_SYMBOL(clk_set_rate); - -#if 0 -/* - * These are fixed clocks. - */ -static struct clk kmi_clk = { - .name = "KMIREFCLK", - .rate = 24000000, -}; - -static struct clk uart_clk = { - .name = "UARTCLK", - .rate = 24000000, -}; - -static struct clk mmci_clk = { - .name = "MCLK", - .rate = 33000000, -}; -#endif - -static struct clk clcd_clk = { - .name = "CLCDCLK", - .rate = 0, -}; - -int clk_register (struct clk *clk) -{ - down (&clocks_sem); - list_add (&clk->node, &clocks); - up (&clocks_sem); - return 0; -} -EXPORT_SYMBOL(clk_register); - -void clk_unregister (struct clk *clk) -{ - down (&clocks_sem); - list_del (&clk->node); - up (&clocks_sem); -} -EXPORT_SYMBOL(clk_unregister); - -static int __init clk_init (void) -{ - clk_register(&clcd_clk); - return 0; -} -arch_initcall(clk_init); |
