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Diffstat (limited to 'include/asm-powerpc/pmac_pfunc.h')
| -rw-r--r-- | include/asm-powerpc/pmac_pfunc.h | 252 |
1 files changed, 0 insertions, 252 deletions
diff --git a/include/asm-powerpc/pmac_pfunc.h b/include/asm-powerpc/pmac_pfunc.h deleted file mode 100644 index 1330d6a58c57..000000000000 --- a/include/asm-powerpc/pmac_pfunc.h +++ /dev/null @@ -1,252 +0,0 @@ -#ifndef __PMAC_PFUNC_H__ -#define __PMAC_PFUNC_H__ - -#include <linux/types.h> -#include <linux/list.h> - -/* Flags in command lists */ -#define PMF_FLAGS_ON_INIT 0x80000000u -#define PMF_FLGAS_ON_TERM 0x40000000u -#define PMF_FLAGS_ON_SLEEP 0x20000000u -#define PMF_FLAGS_ON_WAKE 0x10000000u -#define PMF_FLAGS_ON_DEMAND 0x08000000u -#define PMF_FLAGS_INT_GEN 0x04000000u -#define PMF_FLAGS_HIGH_SPEED 0x02000000u -#define PMF_FLAGS_LOW_SPEED 0x01000000u -#define PMF_FLAGS_SIDE_EFFECTS 0x00800000u - -/* - * Arguments to a platform function call. - * - * NOTE: By convention, pointer arguments point to an u32 - */ -struct pmf_args { - union { - u32 v; - u32 *p; - } u[4]; - unsigned int count; -}; - -/* - * A driver capable of interpreting commands provides a handlers - * structure filled with whatever handlers are implemented by this - * driver. Non implemented handlers are left NULL. - * - * PMF_STD_ARGS are the same arguments that are passed to the parser - * and that gets passed back to the various handlers. - * - * Interpreting a given function always start with a begin() call which - * returns an instance data to be passed around subsequent calls, and - * ends with an end() call. This allows the low level driver to implement - * locking policy or per-function instance data. - * - * For interrupt capable functions, irq_enable() is called when a client - * registers, and irq_disable() is called when the last client unregisters - * Note that irq_enable & irq_disable are called within a semaphore held - * by the core, thus you should not try to register yourself to some other - * pmf interrupt during those calls. - */ - -#define PMF_STD_ARGS struct pmf_function *func, void *instdata, \ - struct pmf_args *args - -struct pmf_function; - -struct pmf_handlers { - void * (*begin)(struct pmf_function *func, struct pmf_args *args); - void (*end)(struct pmf_function *func, void *instdata); - - int (*irq_enable)(struct pmf_function *func); - int (*irq_disable)(struct pmf_function *func); - - int (*write_gpio)(PMF_STD_ARGS, u8 value, u8 mask); - int (*read_gpio)(PMF_STD_ARGS, u8 mask, int rshift, u8 xor); - - int (*write_reg32)(PMF_STD_ARGS, u32 offset, u32 value, u32 mask); - int (*read_reg32)(PMF_STD_ARGS, u32 offset); - int (*write_reg16)(PMF_STD_ARGS, u32 offset, u16 value, u16 mask); - int (*read_reg16)(PMF_STD_ARGS, u32 offset); - int (*write_reg8)(PMF_STD_ARGS, u32 offset, u8 value, u8 mask); - int (*read_reg8)(PMF_STD_ARGS, u32 offset); - - int (*delay)(PMF_STD_ARGS, u32 duration); - - int (*wait_reg32)(PMF_STD_ARGS, u32 offset, u32 value, u32 mask); - int (*wait_reg16)(PMF_STD_ARGS, u32 offset, u16 value, u16 mask); - int (*wait_reg8)(PMF_STD_ARGS, u32 offset, u8 value, u8 mask); - - int (*read_i2c)(PMF_STD_ARGS, u32 len); - int (*write_i2c)(PMF_STD_ARGS, u32 len, const u8 *data); - int (*rmw_i2c)(PMF_STD_ARGS, u32 masklen, u32 valuelen, u32 totallen, - const u8 *maskdata, const u8 *valuedata); - - int (*read_cfg)(PMF_STD_ARGS, u32 offset, u32 len); - int (*write_cfg)(PMF_STD_ARGS, u32 offset, u32 len, const u8 *data); - int (*rmw_cfg)(PMF_STD_ARGS, u32 offset, u32 masklen, u32 valuelen, - u32 totallen, const u8 *maskdata, const u8 *valuedata); - - int (*read_i2c_sub)(PMF_STD_ARGS, u8 subaddr, u32 len); - int (*write_i2c_sub)(PMF_STD_ARGS, u8 subaddr, u32 len, const u8 *data); - int (*set_i2c_mode)(PMF_STD_ARGS, int mode); - int (*rmw_i2c_sub)(PMF_STD_ARGS, u8 subaddr, u32 masklen, u32 valuelen, - u32 totallen, const u8 *maskdata, - const u8 *valuedata); - - int (*read_reg32_msrx)(PMF_STD_ARGS, u32 offset, u32 mask, u32 shift, - u32 xor); - int (*read_reg16_msrx)(PMF_STD_ARGS, u32 offset, u32 mask, u32 shift, - u32 xor); - int (*read_reg8_msrx)(PMF_STD_ARGS, u32 offset, u32 mask, u32 shift, - u32 xor); - - int (*write_reg32_slm)(PMF_STD_ARGS, u32 offset, u32 shift, u32 mask); - int (*write_reg16_slm)(PMF_STD_ARGS, u32 offset, u32 shift, u32 mask); - int (*write_reg8_slm)(PMF_STD_ARGS, u32 offset, u32 shift, u32 mask); - - int (*mask_and_compare)(PMF_STD_ARGS, u32 len, const u8 *maskdata, - const u8 *valuedata); - - struct module *owner; -}; - - -/* - * Drivers who expose platform functions register at init time, this - * causes the platform functions for that device node to be parsed in - * advance and associated with the device. The data structures are - * partially public so a driver can walk the list of platform functions - * and eventually inspect the flags - */ -struct pmf_device; - -struct pmf_function { - /* All functions for a given driver are linked */ - struct list_head link; - - /* Function node & driver data */ - struct device_node *node; - void *driver_data; - - /* For internal use by core */ - struct pmf_device *dev; - - /* The name is the "xxx" in "platform-do-xxx", this is how - * platform functions are identified by this code. Some functions - * only operate for a given target, in which case the phandle is - * here (or 0 if the filter doesn't apply) - */ - const char *name; - u32 phandle; - - /* The flags for that function. You can have several functions - * with the same name and different flag - */ - u32 flags; - - /* The actual tokenized function blob */ - const void *data; - unsigned int length; - - /* Interrupt clients */ - struct list_head irq_clients; - - /* Refcounting */ - struct kref ref; -}; - -/* - * For platform functions that are interrupts, one can register - * irq_client structures. You canNOT use the same structure twice - * as it contains a link member. Also, the callback is called with - * a spinlock held, you must not call back into any of the pmf_* functions - * from within that callback - */ -struct pmf_irq_client { - void (*handler)(void *data); - void *data; - struct module *owner; - struct list_head link; - struct pmf_function *func; -}; - - -/* - * Register/Unregister a function-capable driver and its handlers - */ -extern int pmf_register_driver(struct device_node *np, - struct pmf_handlers *handlers, - void *driverdata); - -extern void pmf_unregister_driver(struct device_node *np); - - -/* - * Register/Unregister interrupt clients - */ -extern int pmf_register_irq_client(struct device_node *np, - const char *name, - struct pmf_irq_client *client); - -extern void pmf_unregister_irq_client(struct pmf_irq_client *client); - -/* - * Called by the handlers when an irq happens - */ -extern void pmf_do_irq(struct pmf_function *func); - - -/* - * Low level call to platform functions. - * - * The phandle can filter on the target object for functions that have - * multiple targets, the flags allow you to restrict the call to a given - * combination of flags. - * - * The args array contains as many arguments as is required by the function, - * this is dependent on the function you are calling, unfortunately Apple - * mechanism provides no way to encode that so you have to get it right at - * the call site. Some functions require no args, in which case, you can - * pass NULL. - * - * You can also pass NULL to the name. This will match any function that has - * the appropriate combination of flags & phandle or you can pass 0 to the - * phandle to match any - */ -extern int pmf_do_functions(struct device_node *np, const char *name, - u32 phandle, u32 flags, struct pmf_args *args); - - - -/* - * High level call to a platform function. - * - * This one looks for the platform-xxx first so you should call it to the - * actual target if any. It will fallback to platform-do-xxx if it can't - * find one. It will also exclusively target functions that have - * the "OnDemand" flag. - */ - -extern int pmf_call_function(struct device_node *target, const char *name, - struct pmf_args *args); - - -/* - * For low latency interrupt usage, you can lookup for on-demand functions - * using the functions below - */ - -extern struct pmf_function *pmf_find_function(struct device_node *target, - const char *name); - -extern struct pmf_function * pmf_get_function(struct pmf_function *func); -extern void pmf_put_function(struct pmf_function *func); - -extern int pmf_call_one(struct pmf_function *func, struct pmf_args *args); - - -/* Suspend/resume code called by via-pmu directly for now */ -extern void pmac_pfunc_base_suspend(void); -extern void pmac_pfunc_base_resume(void); - -#endif /* __PMAC_PFUNC_H__ */ |