diff options
Diffstat (limited to 'arch/mips/loongson2ef/lemote-2f')
-rw-r--r-- | arch/mips/loongson2ef/lemote-2f/clock.c | 98 |
1 files changed, 3 insertions, 95 deletions
diff --git a/arch/mips/loongson2ef/lemote-2f/clock.c b/arch/mips/loongson2ef/lemote-2f/clock.c index 414f282c8ab5..850b6b9f8f15 100644 --- a/arch/mips/loongson2ef/lemote-2f/clock.c +++ b/arch/mips/loongson2ef/lemote-2f/clock.c @@ -6,22 +6,12 @@ * License. See the file "COPYING" in the main directory of this archive * for more details. */ -#include <linux/clk.h> #include <linux/cpufreq.h> #include <linux/errno.h> #include <linux/export.h> -#include <linux/list.h> -#include <linux/mutex.h> -#include <linux/spinlock.h> -#include <asm/clock.h> #include <asm/mach-loongson2ef/loongson.h> -static LIST_HEAD(clock_list); -static DEFINE_SPINLOCK(clock_lock); -static DEFINE_MUTEX(clock_list_sem); - -/* Minimum CLK support */ enum { DC_ZERO, DC_25PT = 2, DC_37PT, DC_50PT, DC_62PT, DC_75PT, DC_87PT, DC_DISABLE, DC_RESV @@ -41,103 +31,21 @@ struct cpufreq_frequency_table loongson2_clockmod_table[] = { }; EXPORT_SYMBOL_GPL(loongson2_clockmod_table); -static struct clk cpu_clk = { - .name = "cpu_clk", - .flags = CLK_ALWAYS_ENABLED | CLK_RATE_PROPAGATES, - .rate = 800000000, -}; - -struct clk *clk_get(struct device *dev, const char *id) -{ - return &cpu_clk; -} -EXPORT_SYMBOL(clk_get); - -static void propagate_rate(struct clk *clk) -{ - struct clk *clkp; - - list_for_each_entry(clkp, &clock_list, node) { - if (likely(clkp->parent != clk)) - continue; - if (likely(clkp->ops && clkp->ops->recalc)) - clkp->ops->recalc(clkp); - if (unlikely(clkp->flags & CLK_RATE_PROPAGATES)) - propagate_rate(clkp); - } -} - -int clk_enable(struct clk *clk) -{ - return 0; -} -EXPORT_SYMBOL(clk_enable); - -void clk_disable(struct clk *clk) +int loongson2_cpu_set_rate(unsigned long rate_khz) { -} -EXPORT_SYMBOL(clk_disable); - -unsigned long clk_get_rate(struct clk *clk) -{ - if (!clk) - return 0; - - return (unsigned long)clk->rate; -} -EXPORT_SYMBOL(clk_get_rate); - -void clk_put(struct clk *clk) -{ -} -EXPORT_SYMBOL(clk_put); - -int clk_set_rate(struct clk *clk, unsigned long rate) -{ - unsigned int rate_khz = rate / 1000; struct cpufreq_frequency_table *pos; - int ret = 0; int regval; - if (likely(clk->ops && clk->ops->set_rate)) { - unsigned long flags; - - spin_lock_irqsave(&clock_lock, flags); - ret = clk->ops->set_rate(clk, rate, 0); - spin_unlock_irqrestore(&clock_lock, flags); - } - - if (unlikely(clk->flags & CLK_RATE_PROPAGATES)) - propagate_rate(clk); - cpufreq_for_each_valid_entry(pos, loongson2_clockmod_table) if (rate_khz == pos->frequency) break; if (rate_khz != pos->frequency) return -ENOTSUPP; - clk->rate = rate; - regval = readl(LOONGSON_CHIPCFG); regval = (regval & ~0x7) | (pos->driver_data - 1); writel(regval, LOONGSON_CHIPCFG); - return ret; -} -EXPORT_SYMBOL_GPL(clk_set_rate); - -long clk_round_rate(struct clk *clk, unsigned long rate) -{ - if (likely(clk->ops && clk->ops->round_rate)) { - unsigned long flags, rounded; - - spin_lock_irqsave(&clock_lock, flags); - rounded = clk->ops->round_rate(clk, rate); - spin_unlock_irqrestore(&clock_lock, flags); - - return rounded; - } - - return rate; + return 0; } -EXPORT_SYMBOL_GPL(clk_round_rate); +EXPORT_SYMBOL_GPL(loongson2_cpu_set_rate); |