ti_adcvar.h revision 266338 
1/*-
2 * Copyright 2014 Luiz Otavio O Souza <loos@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: stable/10/sys/arm/ti/ti_adcvar.h 266338 2014-05-17 19:06:46Z loos $
27 */
28
29#ifndef _TI_ADCVAR_H_
30#define _TI_ADCVAR_H_
31
32#define	TI_ADC_NPINS	7
33
34#define	ADC_READ4(_sc, reg)	bus_read_4((_sc)->sc_mem_res, reg)
35#define	ADC_WRITE4(_sc, reg, value)	\
36	bus_write_4((_sc)->sc_mem_res, reg, value)
37
38struct ti_adc_softc {
39	device_t		sc_dev;
40	int			sc_last_state;
41	struct mtx		sc_mtx;
42	struct resource		*sc_mem_res;
43	struct resource		*sc_irq_res;
44	void			*sc_intrhand;
45};
46
47struct ti_adc_input {
48	int32_t			enable;		/* input enabled */
49	int32_t			samples;	/* samples average */
50	int32_t			input;		/* input number */
51	int32_t			value;		/* raw converted value */
52	uint32_t		stepconfig;	/* step config register */
53	uint32_t		stepdelay;	/* step delay register */
54	struct ti_adc_softc	*sc;		/* pointer to adc softc */
55};
56
57#define	TI_ADC_LOCK(_sc)		\
58	mtx_lock(&(_sc)->sc_mtx)
59#define	TI_ADC_UNLOCK(_sc)		\
60	mtx_unlock(&(_sc)->sc_mtx)
61#define	TI_ADC_LOCK_INIT(_sc)	\
62	mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->sc_dev), \
63	    "ti_adc", MTX_DEF)
64#define	TI_ADC_LOCK_DESTROY(_sc)	\
65	mtx_destroy(&_sc->sc_mtx);
66#define	TI_ADC_LOCK_ASSERT(_sc)	\
67	mtx_assert(&(_sc)->sc_mtx, MA_OWNED)
68
69#endif /* _TI_ADCVAR_H_ */
70