FreeBSD/Linux Kernel Cross Reference
sys/arm/ti/ti_scm.h

     /*
      * Copyright (c) 2010
      *      Ben Gray <ben.r.gray@gmail.com>.
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Ben Gray.
     * 4. The name of the company nor the name of the author may be used to
     *    endorse or promote products derived from this software without specific
     *    prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY BEN GRAY ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL BEN GRAY BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * $FreeBSD: releng/10.0/sys/arm/ti/ti_scm.h 239281 2012-08-15 06:31:32Z gonzo $
     */
    
    
    /**
     *      Functions to configure the PIN multiplexing on the chip.
     *
     *      This is different from the GPIO module in that it is used to configure the
     *      pins between modules not just GPIO input output.
     *
     */
    #ifndef _TI_SCM_H_
    #define _TI_SCM_H_
    
    struct ti_scm_padconf {
            uint16_t    reg_off;
            uint16_t    gpio_pin;
            uint16_t    gpio_mode;
            const char  *ballname;
            const char  *muxmodes[8];
    };
    
    struct ti_scm_padstate {
            const char  *state;
            uint16_t    reg;
    };
    
    struct ti_scm_device {
            uint16_t                padconf_muxmode_mask;
            uint16_t                padconf_sate_mask;
            struct ti_scm_padstate  *padstate;
            struct ti_scm_padconf   *padconf;
    };
    
    struct ti_scm_softc {
            device_t                sc_dev;
            struct resource *       sc_res[4];
            bus_space_tag_t         sc_bst;
            bus_space_handle_t      sc_bsh;
    };
    
    int ti_scm_padconf_set(const char *padname, const char *muxmode, 
        unsigned int state);
    int ti_scm_padconf_get(const char *padname, const char **muxmode,
        unsigned int *state);
    int ti_scm_padconf_set_gpiomode(uint32_t gpio, unsigned int state);
    int ti_scm_padconf_get_gpiomode(uint32_t gpio, unsigned int *state);
    int ti_scm_padconf_set_gpioflags(uint32_t gpio, uint32_t flags);
    void ti_scm_padconf_get_gpioflags(uint32_t gpio, uint32_t *flags);
    int ti_scm_reg_read_4(uint32_t reg, uint32_t *val);
    int ti_scm_reg_write_4(uint32_t reg, uint32_t val);
    
    #endif /* _TI_SCM_H_ */

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