diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-01 10:53:43 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-01 10:53:43 -0700 |
commit | 00e9028a95fb8a4d79f2fb695a853f33ea7d3b57 (patch) | |
tree | 2dea2ae498a6ce57de8890e87185aca5e9f3ad2d /arch/sh/include/asm/clock.h | |
parent | 57b1494d2ba544c62673234da6115c21fac27ffc (diff) | |
parent | 7cb93181629c613ee2b8f4ffe3446f8003074842 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (28 commits)
mm/hugetlb.c must #include <asm/io.h>
video: Fix up hp6xx driver build regressions.
sh: defconfig updates.
sh: Kill off stray mach-rsk7203 reference.
serial: sh-sci: Fix up SH7760/SH7780/SH7785 early printk regression.
sh: Move out individual boards without mach groups.
sh: Make sure AT_SYSINFO_EHDR is exposed to userspace in asm/auxvec.h.
sh: Allow SH-3 and SH-5 to use common headers.
sh: Provide common CPU headers, prune the SH-2 and SH-2A directories.
sh/maple: clean maple bus code
sh: More header path fixups for mach dir refactoring.
sh: Move out the solution engine headers to arch/sh/include/mach-se/
sh: I2C fix for AP325RXA and Migo-R
sh: Shuffle the board directories in to mach groups.
sh: dma-sh: Fix up dreamcast dma.h mach path.
sh: Switch KBUILD_DEFCONFIG to shx3_defconfig.
sh: Add ARCH_DEFCONFIG entries for sh and sh64.
sh: Fix compile error of Solution Engine
sh: Proper __put_user_asm() size mismatch fix.
sh: Stub in a dummy ENTRY_OFFSET for uImage offset calculation.
...
Diffstat (limited to 'arch/sh/include/asm/clock.h')
-rw-r--r-- | arch/sh/include/asm/clock.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/arch/sh/include/asm/clock.h b/arch/sh/include/asm/clock.h new file mode 100644 index 00000000000..720dfab7b15 --- /dev/null +++ b/arch/sh/include/asm/clock.h @@ -0,0 +1,97 @@ +#ifndef __ASM_SH_CLOCK_H +#define __ASM_SH_CLOCK_H + +#include <linux/kref.h> +#include <linux/list.h> +#include <linux/seq_file.h> +#include <linux/clk.h> +#include <linux/err.h> + +struct clk; + +struct clk_ops { + void (*init)(struct clk *clk); + void (*enable)(struct clk *clk); + void (*disable)(struct clk *clk); + void (*recalc)(struct clk *clk); + int (*set_rate)(struct clk *clk, unsigned long rate, int algo_id); + long (*round_rate)(struct clk *clk, unsigned long rate); +}; + +struct clk { + struct list_head node; + const char *name; + int id; + struct module *owner; + + struct clk *parent; + struct clk_ops *ops; + + struct kref kref; + + unsigned long rate; + unsigned long flags; + unsigned long arch_flags; +}; + +#define CLK_ALWAYS_ENABLED (1 << 0) +#define CLK_RATE_PROPAGATES (1 << 1) + +/* Should be defined by processor-specific code */ +void arch_init_clk_ops(struct clk_ops **, int type); + +/* arch/sh/kernel/cpu/clock.c */ +int clk_init(void); + +void clk_recalc_rate(struct clk *); + +int clk_register(struct clk *); +void clk_unregister(struct clk *); + +static inline int clk_always_enable(const char *id) +{ + struct clk *clk; + int ret; + + clk = clk_get(NULL, id); + if (IS_ERR(clk)) + return PTR_ERR(clk); + + ret = clk_enable(clk); + if (ret) + clk_put(clk); + + return ret; +} + +/* the exported API, in addition to clk_set_rate */ +/** + * clk_set_rate_ex - set the clock rate for a clock source, with additional parameter + * @clk: clock source + * @rate: desired clock rate in Hz + * @algo_id: algorithm id to be passed down to ops->set_rate + * + * Returns success (0) or negative errno. + */ +int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id); + +enum clk_sh_algo_id { + NO_CHANGE = 0, + + IUS_N1_N1, + IUS_322, + IUS_522, + IUS_N11, + + SB_N1, + + SB3_N1, + SB3_32, + SB3_43, + SB3_54, + + BP_N1, + + IP_N1, +}; +#endif /* __ASM_SH_CLOCK_H */ |