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author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-22 17:32:09 -0800 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-22 17:32:09 -0800 |
commit | 591eb85ecd7e6eb8596c6129ae074e16636b99f4 (patch) | |
tree | 535fb7e9bc29113ff62fd70b0dcd8ad197ab51e2 /arch/arm/mach-pxa | |
parent | 4658f79bec0b51222e769e328c2923f39f3bda77 (diff) | |
parent | 3a2916aa289504d694072a98876d23ca31d6401e (diff) | |
download | linux-591eb85ecd7e6eb8596c6129ae074e16636b99f4.tar.gz linux-591eb85ecd7e6eb8596c6129ae074e16636b99f4.tar.bz2 linux-591eb85ecd7e6eb8596c6129ae074e16636b99f4.zip |
Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm: (45 commits)
[ARM] 3389/1: typo and grammar fix
[ARM] 3386/1: AT91RM9200 Clock update
[ARM] 3384/1: AT91RM9200: Timer
[ARM] 3382/1: ixp2000: unify defconfigs
[ARM] 3381/1: ixp2000: fix slowport write timing control register fields
[ARM] 3380/1: ixp2000: simplify ixdp2x00_master_npu() check
[ARM] 3379/1: ixp2000: use generic 8250 debug macros
[ARM] 3378/1: ixp2000: fix gpio interrupt handling
[ARM] Quieten spurious IRQ detection
[ARM] Use kcalloc to allocate counter_config array rather than kmalloc
[ARM] Oprofile: dynamically allocate counter_config
[ARM] Oprofile: Convert semaphore to mutex
[ARM] 3376/2: S3C2410 - update defconfig
[ARM] 3375/1: S3C2440 - fix osiris machine build
[ARM] 3374/1: ep93xx: gpio interrupt support
[ARM] 3361/1: S3C24XX - add USB bus clock source
[ARM] 3360/1: S3C2440 - add set rate methods and camera clock
[ARM] 3359/1: S3C24XX - add support for clk_set_rate
[ARM] Convert kmalloc+memset to kzalloc
[ARM] 3373/1: move uengine loader to arch/arm/common
...
Diffstat (limited to 'arch/arm/mach-pxa')
-rw-r--r-- | arch/arm/mach-pxa/Makefile | 2 | ||||
-rw-r--r-- | arch/arm/mach-pxa/clock.c | 124 | ||||
-rw-r--r-- | arch/arm/mach-pxa/corgi.c | 1 | ||||
-rw-r--r-- | arch/arm/mach-pxa/poodle.c | 1 | ||||
-rw-r--r-- | arch/arm/mach-pxa/spitz.c | 1 | ||||
-rw-r--r-- | arch/arm/mach-pxa/tosa.c | 1 |
6 files changed, 125 insertions, 5 deletions
diff --git a/arch/arm/mach-pxa/Makefile b/arch/arm/mach-pxa/Makefile index 32526a0a6f86..382644401a4d 100644 --- a/arch/arm/mach-pxa/Makefile +++ b/arch/arm/mach-pxa/Makefile @@ -3,7 +3,7 @@ # # Common support (must be linked before board specific support) -obj-y += generic.o irq.o dma.o time.o +obj-y += clock.o generic.o irq.o dma.o time.o obj-$(CONFIG_PXA25x) += pxa25x.o obj-$(CONFIG_PXA27x) += pxa27x.o diff --git a/arch/arm/mach-pxa/clock.c b/arch/arm/mach-pxa/clock.c new file mode 100644 index 000000000000..8f7c90a0593b --- /dev/null +++ b/arch/arm/mach-pxa/clock.c @@ -0,0 +1,124 @@ +/* + * linux/arch/arm/mach-sa1100/clock.c + */ +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/errno.h> +#include <linux/err.h> +#include <linux/string.h> +#include <linux/clk.h> +#include <linux/spinlock.h> + +#include <asm/arch/pxa-regs.h> +#include <asm/hardware.h> +#include <asm/semaphore.h> + +struct clk { + struct list_head node; + unsigned long rate; + struct module *owner; + const char *name; + unsigned int enabled; + void (*enable)(void); + void (*disable)(void); +}; + +static LIST_HEAD(clocks); +static DECLARE_MUTEX(clocks_sem); +static DEFINE_SPINLOCK(clocks_lock); + +struct clk *clk_get(struct device *dev, const char *id) +{ + struct clk *p, *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) +{ + unsigned long flags; + + spin_lock_irqsave(&clocks_lock, flags); + if (clk->enabled++ == 0) + clk->enable(); + spin_unlock_irqrestore(&clocks_lock, flags); + return 0; +} +EXPORT_SYMBOL(clk_enable); + +void clk_disable(struct clk *clk) +{ + unsigned long flags; + + WARN_ON(clk->enabled == 0); + + spin_lock_irqsave(&clocks_lock, flags); + if (--clk->enabled == 0) + clk->disable(); + spin_unlock_irqrestore(&clocks_lock, flags); +} +EXPORT_SYMBOL(clk_disable); + +unsigned long clk_get_rate(struct clk *clk) +{ + return clk->rate; +} +EXPORT_SYMBOL(clk_get_rate); + + +static void clk_gpio27_enable(void) +{ + pxa_gpio_mode(GPIO11_3_6MHz_MD); +} + +static void clk_gpio27_disable(void) +{ +} + +static struct clk clk_gpio27 = { + .name = "GPIO27_CLK", + .rate = 3686400, + .enable = clk_gpio27_enable, + .disable = clk_gpio27_disable, +}; + +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(&clk_gpio27); + return 0; +} +arch_initcall(clk_init); diff --git a/arch/arm/mach-pxa/corgi.c b/arch/arm/mach-pxa/corgi.c index 7ffd2de8f2f3..68923b1d2b62 100644 --- a/arch/arm/mach-pxa/corgi.c +++ b/arch/arm/mach-pxa/corgi.c @@ -32,7 +32,6 @@ #include <asm/mach/irq.h> #include <asm/arch/pxa-regs.h> -#include <asm/arch/irq.h> #include <asm/arch/irda.h> #include <asm/arch/mmc.h> #include <asm/arch/udc.h> diff --git a/arch/arm/mach-pxa/poodle.c b/arch/arm/mach-pxa/poodle.c index 911e6ff5a9bd..b45560a8f6c4 100644 --- a/arch/arm/mach-pxa/poodle.c +++ b/arch/arm/mach-pxa/poodle.c @@ -29,7 +29,6 @@ #include <asm/mach/irq.h> #include <asm/arch/pxa-regs.h> -#include <asm/arch/irq.h> #include <asm/arch/mmc.h> #include <asm/arch/udc.h> #include <asm/arch/irda.h> diff --git a/arch/arm/mach-pxa/spitz.c b/arch/arm/mach-pxa/spitz.c index c094d99ebf56..30ec317bbb97 100644 --- a/arch/arm/mach-pxa/spitz.c +++ b/arch/arm/mach-pxa/spitz.c @@ -33,7 +33,6 @@ #include <asm/mach/irq.h> #include <asm/arch/pxa-regs.h> -#include <asm/arch/irq.h> #include <asm/arch/irda.h> #include <asm/arch/mmc.h> #include <asm/arch/ohci.h> diff --git a/arch/arm/mach-pxa/tosa.c b/arch/arm/mach-pxa/tosa.c index d168286ed470..66ec71756d0f 100644 --- a/arch/arm/mach-pxa/tosa.c +++ b/arch/arm/mach-pxa/tosa.c @@ -34,7 +34,6 @@ #include <asm/mach/irq.h> #include <asm/arch/pxa-regs.h> -#include <asm/arch/irq.h> #include <asm/arch/tosa.h> #include <asm/hardware/scoop.h> |