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