io_interface_mux.h

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/* IO interface mux allocator for ETRAX100LX.
 * Copyright 2004, Axis Communications AB
 * $Id: io_interface_mux.h,v 1.1 2004/12/13 12:21:53 starvik Exp $
 */


#ifndef _IO_INTERFACE_MUX_H
#define _IO_INTERFACE_MUX_H


/* C.f. ETRAX100LX Designer's Reference 20.9 */

/* The order in enum must match the order of interfaces[] in
 * io_interface_mux.c */
enum cris_io_interface {
    /* Begin Non-multiplexed interfaces */
    if_eth = 0,
    if_serial_0,
    /* End Non-multiplexed interfaces */
    if_serial_1,
    if_serial_2,
    if_serial_3,
    if_sync_serial_1,
    if_sync_serial_3,
    if_shared_ram,
    if_shared_ram_w,
    if_par_0,
    if_par_1,
    if_par_w,
    if_scsi8_0,
    if_scsi8_1,
    if_scsi_w,
    if_ata,
    if_csp,
    if_i2c,
    if_usb_1,
    if_usb_2,
    /* GPIO pins */
    if_gpio_grp_a,
    if_gpio_grp_b,
    if_gpio_grp_c,
    if_gpio_grp_d,
    if_gpio_grp_e,
    if_gpio_grp_f,
    if_max_interfaces,
    if_unclaimed
};

int cris_request_io_interface(enum cris_io_interface ioif, const char *device_id);

void cris_free_io_interface(enum cris_io_interface ioif);

/* port can be 'a', 'b' or 'g' */
int cris_io_interface_allocate_pins(const enum cris_io_interface ioif,
                    const char port,
                    const unsigned start_bit,
                    const unsigned stop_bit);

/* port can be 'a', 'b' or 'g' */
int cris_io_interface_free_pins(const enum cris_io_interface ioif,
                                const char port,
                                const unsigned start_bit,
                                const unsigned stop_bit);

int cris_io_interface_register_watcher(void (*notify)(const unsigned int gpio_in_available,
                              const unsigned int gpio_out_available,
                              const unsigned char pa_available,
                              const unsigned char pb_available));

void cris_io_interface_delete_watcher(void (*notify)(const unsigned int gpio_in_available,
                             const unsigned int gpio_out_available,
                                                     const unsigned char pa_available,
                             const unsigned char pb_available));

#endif /* _IO_INTERFACE_MUX_H */