projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| da15797e HK |
1 | /* |
| 2 | * Low level clock header file for Telechips TCC architecture | |
| 3 | * (C) 2010 Hans J. Koch <hjk@linutronix.de> | |
| 4 | * | |
| 5 | * Licensed under the GPL v2. | |
| 6 | */ | |
| 7 | ||
| 8 | #ifndef __ASM_ARCH_TCC_CLOCK_H__ | |
| 9 | #define __ASM_ARCH_TCC_CLOCK_H__ | |
| 10 | ||
| 11 | #ifndef __ASSEMBLY__ | |
| 12 | ||
| 13 | struct clk { | |
| 14 | struct clk *parent; | |
| 15 | /* id number of a root clock, 0 for normal clocks */ | |
| 16 | int root_id; | |
| 17 | /* Reference count of clock enable/disable */ | |
| 18 | int refcount; | |
| 19 | /* Address of associated BCLKCTRx register. Must be set. */ | |
| 20 | void __iomem *bclkctr; | |
| 21 | /* Bit position for BCLKCTRx. Must be set. */ | |
| 22 | int bclk_shift; | |
| 23 | /* Address of ACLKxxx register, if any. */ | |
| 24 | void __iomem *aclkreg; | |
| 25 | /* get the current clock rate (always a fresh value) */ | |
| 26 | unsigned long (*get_rate) (struct clk *); | |
| 27 | /* Function ptr to set the clock to a new rate. The rate must match a | |
| 28 | supported rate returned from round_rate. Leave blank if clock is not | |
| 29 | programmable */ | |
| 30 | int (*set_rate) (struct clk *, unsigned long); | |
| 31 | /* Function ptr to round the requested clock rate to the nearest | |
| 32 | supported rate that is less than or equal to the requested rate. */ | |
| 33 | unsigned long (*round_rate) (struct clk *, unsigned long); | |
| 34 | /* Function ptr to enable the clock. Leave blank if clock can not | |
| 35 | be gated. */ | |
| 36 | int (*enable) (struct clk *); | |
| 37 | /* Function ptr to disable the clock. Leave blank if clock can not | |
| 38 | be gated. */ | |
| 39 | void (*disable) (struct clk *); | |
| 40 | /* Function ptr to set the parent clock of the clock. */ | |
| 41 | int (*set_parent) (struct clk *, struct clk *); | |
| 42 | }; | |
| 43 | ||
| 44 | int clk_register(struct clk *clk); | |
| 45 | void clk_unregister(struct clk *clk); | |
| 46 | ||
| 47 | #endif /* __ASSEMBLY__ */ | |
| 48 | #endif /* __ASM_ARCH_MXC_CLOCK_H__ */ |