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 * $FreeBSD$ 33 */ 34 35 36 /** 37 * Functions to configure the PIN multiplexing on the chip. 38 * 39 * This is different from the GPIO module in that it is used to configure the 40 * pins between modules not just GPIO input output. 41 * 42 */ 43 #ifndef _TI_SCM_H_ 44 #define _TI_SCM_H_ 45 46 struct ti_scm_padconf { 47 uint16_t reg_off; 48 uint16_t gpio_pin; 49 uint16_t gpio_mode; 50 const char *ballname; 51 const char *muxmodes[8]; 52 }; 53 54 struct ti_scm_padstate { 55 const char *state; 56 uint16_t reg; 57 }; 58 59 struct ti_scm_device { 60 uint16_t padconf_muxmode_mask; 61 uint16_t padconf_sate_mask; 62 struct ti_scm_padstate *padstate; 63 struct ti_scm_padconf *padconf; 64 }; 65 66 struct ti_scm_softc { 67 device_t sc_dev; 68 struct resource * sc_res[4]; 69 bus_space_tag_t sc_bst; 70 bus_space_handle_t sc_bsh; 71 }; 72 73 int ti_scm_padconf_set(const char *padname, const char *muxmode, 74 unsigned int state); 75 int ti_scm_padconf_get(const char *padname, const char **muxmode, 76 unsigned int *state); 77 int ti_scm_padconf_set_gpiomode(uint32_t gpio, unsigned int state); 78 int ti_scm_padconf_get_gpiomode(uint32_t gpio, unsigned int *state); 79 int ti_scm_reg_read_4(uint32_t reg, uint32_t *val); 80 int ti_scm_reg_write_4(uint32_t reg, uint32_t val); 81 82 #endif /* _TI_SCM_H_ */ 83