FreeBSD/Linux Kernel Cross Reference
sys/arm/ti/ti_pinmux.h
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 * Functions to configure the PIN multiplexing on the chip.
37 *
38 * This is different from the GPIO module in that it is used to configure the
39 * pins between modules not just GPIO input output.
40 *
41 */
42 #ifndef _TI_PINMUX_H_
43 #define _TI_PINMUX_H_
44
45 struct ti_pinmux_padconf {
46 uint16_t reg_off;
47 uint16_t gpio_pin;
48 uint16_t gpio_mode;
49 const char *ballname;
50 const char *muxmodes[8];
51 };
52
53 struct ti_pinmux_padstate {
54 const char *state;
55 uint16_t reg;
56 };
57
58 struct ti_pinmux_device {
59 uint16_t padconf_muxmode_mask;
60 uint16_t padconf_sate_mask;
61 const struct ti_pinmux_padstate *padstate;
62 const struct ti_pinmux_padconf *padconf;
63 };
64
65 struct ti_pinmux_softc {
66 device_t sc_dev;
67 struct resource * sc_res[4];
68 bus_space_tag_t sc_bst;
69 bus_space_handle_t sc_bsh;
70 };
71
72 int ti_pinmux_padconf_set(const char *padname, const char *muxmode,
73 unsigned int state);
74 int ti_pinmux_padconf_get(const char *padname, const char **muxmode,
75 unsigned int *state);
76 int ti_pinmux_padconf_set_gpiomode(uint32_t gpio, unsigned int state);
77 int ti_pinmux_padconf_get_gpiomode(uint32_t gpio, unsigned int *state);
78
79 #endif /* _TI_SCM_H_ */
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