From aa6f5ffbdba45aa8e19e5048648fc6c7b25376d3 Mon Sep 17 00:00:00 2001 From: merge Date: Thu, 22 Jan 2009 13:55:32 +0000 Subject: MERGE-via-pending-tracking-hist-MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141 pending-tracking-hist top was MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141 / fdf777a63bcb59e0dfd78bfe2c6242e01f6d4eb9 ... parent commitmessage: From: merge MERGE-via-stable-tracking-hist-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040 stable-tracking-hist top was MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040 / 90463bfd2d5a3c8b52f6e6d71024a00e052b0ced ... parent commitmessage: From: merge MERGE-via-mokopatches-tracking-hist-fix-stray-endmenu-patch mokopatches-tracking-hist top was fix-stray-endmenu-patch / 3630e0be570de8057e7f8d2fe501ed353cdf34e6 ... parent commitmessage: From: Andy Green fix-stray-endmenu.patch Signed-off-by: Andy Green --- arch/arm/mach-sa1100/clock.c | 100 ++++++++++++------------------------------- 1 file changed, 27 insertions(+), 73 deletions(-) (limited to 'arch/arm/mach-sa1100/clock.c') diff --git a/arch/arm/mach-sa1100/clock.c b/arch/arm/mach-sa1100/clock.c index 43c30f84abf..dab3c6347a8 100644 --- a/arch/arm/mach-sa1100/clock.c +++ b/arch/arm/mach-sa1100/clock.c @@ -3,6 +3,7 @@ */ #include #include +#include #include #include #include @@ -14,36 +15,39 @@ #include /* - * Very simple clock implementation - we only have one clock to - * deal with at the moment, so we only match using the "name". + * Very simple clock implementation - we only have one clock to deal with. */ struct clk { - struct list_head node; - unsigned long rate; - const char *name; unsigned int enabled; - void (*enable)(void); - void (*disable)(void); }; -static LIST_HEAD(clocks); -static DEFINE_MUTEX(clocks_mutex); +static void clk_gpio27_enable(void) +{ + /* + * First, set up the 3.6864MHz clock on GPIO 27 for the SA-1111: + * (SA-1110 Developer's Manual, section 9.1.2.1) + */ + GAFR |= GPIO_32_768kHz; + GPDR |= GPIO_32_768kHz; + TUCR = TUCR_3_6864MHz; +} + +static void clk_gpio27_disable(void) +{ + TUCR = 0; + GPDR &= ~GPIO_32_768kHz; + GAFR &= ~GPIO_32_768kHz; +} + +static struct clk clk_gpio27; + static DEFINE_SPINLOCK(clocks_lock); struct clk *clk_get(struct device *dev, const char *id) { - struct clk *p, *clk = ERR_PTR(-ENOENT); - - mutex_lock(&clocks_mutex); - list_for_each_entry(p, &clocks, node) { - if (strcmp(id, p->name) == 0) { - clk = p; - break; - } - } - mutex_unlock(&clocks_mutex); + const char *devname = dev_name(dev); - return clk; + return strcmp(devname, "sa1111.0") ? ERR_PTR(-ENOENT) : &clk_gpio27; } EXPORT_SYMBOL(clk_get); @@ -58,7 +62,7 @@ int clk_enable(struct clk *clk) spin_lock_irqsave(&clocks_lock, flags); if (clk->enabled++ == 0) - clk->enable(); + clk_gpio27_enable(); spin_unlock_irqrestore(&clocks_lock, flags); return 0; } @@ -72,63 +76,13 @@ void clk_disable(struct clk *clk) spin_lock_irqsave(&clocks_lock, flags); if (--clk->enabled == 0) - clk->disable(); + clk_gpio27_disable(); spin_unlock_irqrestore(&clocks_lock, flags); } EXPORT_SYMBOL(clk_disable); unsigned long clk_get_rate(struct clk *clk) { - return clk->rate; + return 3686400; } EXPORT_SYMBOL(clk_get_rate); - - -static void clk_gpio27_enable(void) -{ - /* - * First, set up the 3.6864MHz clock on GPIO 27 for the SA-1111: - * (SA-1110 Developer's Manual, section 9.1.2.1) - */ - GAFR |= GPIO_32_768kHz; - GPDR |= GPIO_32_768kHz; - TUCR = TUCR_3_6864MHz; -} - -static void clk_gpio27_disable(void) -{ - TUCR = 0; - GPDR &= ~GPIO_32_768kHz; - GAFR &= ~GPIO_32_768kHz; -} - -static struct clk clk_gpio27 = { - .name = "SA1111_CLK", - .rate = 3686400, - .enable = clk_gpio27_enable, - .disable = clk_gpio27_disable, -}; - -int clk_register(struct clk *clk) -{ - mutex_lock(&clocks_mutex); - list_add(&clk->node, &clocks); - mutex_unlock(&clocks_mutex); - return 0; -} -EXPORT_SYMBOL(clk_register); - -void clk_unregister(struct clk *clk) -{ - mutex_lock(&clocks_mutex); - list_del(&clk->node); - mutex_unlock(&clocks_mutex); -} -EXPORT_SYMBOL(clk_unregister); - -static int __init clk_init(void) -{ - clk_register(&clk_gpio27); - return 0; -} -arch_initcall(clk_init); -- cgit v1.2.3