1 /* 2 * Copyright (c) 2010 3 * Ben Gray <ben.r.gray@gmail.com>. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Ben Gray. 17 * 4. The name of the company nor the name of the author may be used to 18 * endorse or promote products derived from this software without specific 19 * prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY BEN GRAY ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL BEN GRAY BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 27 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 28 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 29 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 30 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /** 34 * Functions to configure the PIN multiplexing on the chip. 35 * 36 * This is different from the GPIO module in that it is used to configure the 37 * pins between modules not just GPIO input output. 38 * 39 */ 40 #ifndef _TI_PINMUX_H_ 41 #define _TI_PINMUX_H_ 42 43 struct ti_pinmux_padconf { 44 uint16_t reg_off; 45 uint16_t gpio_pin; 46 uint16_t gpio_mode; 47 const char *ballname; 48 const char *muxmodes[8]; 49 }; 50 51 struct ti_pinmux_padstate { 52 const char *state; 53 uint16_t reg; 54 }; 55 56 struct ti_pinmux_device { 57 uint16_t padconf_muxmode_mask; 58 uint16_t padconf_sate_mask; 59 const struct ti_pinmux_padstate *padstate; 60 const struct ti_pinmux_padconf *padconf; 61 }; 62 63 struct ti_pinmux_softc { 64 device_t sc_dev; 65 struct resource * sc_res[4]; 66 bus_space_tag_t sc_bst; 67 bus_space_handle_t sc_bsh; 68 }; 69 70 int ti_pinmux_padconf_set(const char *padname, const char *muxmode, 71 unsigned int state); 72 int ti_pinmux_padconf_get(const char *padname, const char **muxmode, 73 unsigned int *state); 74 int ti_pinmux_padconf_set_gpiomode(uint32_t gpio, unsigned int state); 75 int ti_pinmux_padconf_get_gpiomode(uint32_t gpio, unsigned int *state); 76 77 #endif /* _TI_SCM_H_ */ 78