imx51_pwm.c revision 1.1 
1/*	$NetBSD: imx51_pwm.c,v 1.1 2014/05/06 11:22:53 hkenken Exp $	*/
2
3/*-
4 * Copyright (c) 2014  Genetec Corporation.  All rights reserved.
5 * Written by Hashimoto Kenichi for Genetec Corporation.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__KERNEL_RCSID(0, "$NetBSD: imx51_pwm.c,v 1.1 2014/05/06 11:22:53 hkenken Exp $");
31
32#include "locators.h"
33#include "opt_imx.h"
34
35#include <sys/param.h>
36#include <sys/bus.h>
37#include <sys/device.h>
38
39#include <arm/imx/imxpwmvar.h>
40#include <arm/imx/imx51reg.h>
41#include <arm/imx/imx51var.h>
42#include <arm/imx/imx51_ccmvar.h>
43
44int
45imxpwm_match(device_t parent, cfdata_t cf, void *aux)
46{
47	struct axi_attach_args *aa = aux;
48
49	switch (aa->aa_addr) {
50	case PWM1_BASE:
51	case PWM2_BASE:
52		return 1;
53	}
54
55	return 0;
56}
57
58void
59imxpwm_attach(struct imxpwm_softc *sc, void *aux)
60{
61	struct axi_attach_args *aa = aux;
62
63	if (aa->aa_size == AXICF_SIZE_DEFAULT)
64		aa->aa_size = PWM_SIZE;
65	sc->sc_iot = aa->aa_iot;
66	sc->sc_intr = aa->aa_irq;
67	sc->sc_freq = imx51_get_clock(IMX51CLK_IPG_CLK_ROOT);
68	if (bus_space_map(aa->aa_iot, aa->aa_addr, aa->aa_size, 0, &sc->sc_ioh))
69		panic("%s: couldn't map", device_xname(sc->sc_dev));
70	imxpwm_attach_common(sc);
71}
72