64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
#ifndef __VMMC_MODULE_H__
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#define __VMMC_MODULE_H__
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#include <linux/list.h>
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#include <linux/kernel.h>
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#include <linux/tapi/tapi.h>
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struct vmmc_module;
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struct vmmc_module_ops {
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int (*sync)(struct vmmc_module *);
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int (*enable)(struct vmmc_module *, bool enable);
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};
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struct vmmc_module
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{
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unsigned int id;
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size_t num_pins;
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unsigned int *pins;
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const struct vmmc_module_ops *ops;
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unsigned long flags;
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#define VMMC_MODULE_FLAG_PIN_USED(x) (x)
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#define VMMC_MODULE_FLAG_MODIFIED 31
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struct mutex lock;
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struct list_head head;
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unsigned int refcount;
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};
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int vmmc_module_init(struct vmmc_module *module, size_t num_pins,
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const struct vmmc_module_ops *ops);
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int vmmc_module_sync(struct vmmc_module *module);
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struct vmmc_link {
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struct vmmc_module *modules[2];
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unsigned int pins[2];
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};
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struct vmmc_endpoint {
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struct tapi_endpoint ep;
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struct vmmc_module *module;
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};
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void vmmc_link_enable(struct vmmc_link *link);
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void vmmc_link_disable(struct vmmc_link *link);
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unsigned int vmmc_link_init(struct vmmc_link *link,
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struct vmmc_module *a, struct vmmc_module *b);
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void vmmc_link_put(struct vmmc_link *link);
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int vmmc_module_get_pin(struct vmmc_module *module);
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void vmmc_module_put_pin(struct vmmc_module *module, unsigned int pin);
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void vmmc_module_set_pin_input(struct vmmc_module *module, unsigned int pin,
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struct vmmc_module *input);
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static inline struct vmmc_module *tapi_endpoint_to_vmmc_module(struct tapi_endpoint *ep)
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{
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return tapi_endpoint_get_data(ep);
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}
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#endif
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