| /** |
| * linux/drivers/parrot/mfd/p7mu-pin.h.c - Parrot7 power management unit I/O pins |
| * internal interface |
| * |
| * Copyright (C) 2012 Parrot S.A. |
| * |
| * author: Gregor Boirie <gregor.boirie@parrot.com> |
| * date: 18-Sep-2012 |
| * |
| * This file is released under the GPL |
| */ |
| |
| #ifndef _P7MU_PIN_H |
| #define _P7MU_PIN_H |
| |
| #include "p7mu.h" |
| |
| /* I/O pins configuration register */ |
| #define P7MU_PIN_CFG (P7MU_CFG_PAGE + 0x0b) |
| |
| /* |
| * Multiplexing functions which may be assigned to I/O pins |
| */ |
| enum p7mu_mux { |
| P7MU_INGPIO_MUX, /* Input GPIO */ |
| P7MU_OUTGPIO_MUX, /* Output GPIO */ |
| P7MU_PWM_MUX /* PWM output */ |
| }; |
| |
| /* |
| * Pin descriptor |
| */ |
| struct p7mu_pin { |
| /* Pin usage marker */ |
| bool booked; |
| /* Multiplexing function currently assigned to pin */ |
| enum p7mu_mux mux; |
| }; |
| |
| extern int p7mu_request_pin(unsigned int, enum p7mu_mux); |
| extern void p7mu_free_pin(unsigned int); |
| extern int p7mu_setup_pin(unsigned int, enum p7mu_mux); |
| extern int p7mu_pin_mux(unsigned int); |
| |
| #endif /* _P7MU_PIN_H */ |
