1 /* $NetBSD: imx51_pwm.c,v 1.2 2020/05/20 05:10:42 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 1.2 2020/05/20 05:10:42 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
44 int
imxpwm_match(device_t parent,cfdata_t cf,void * aux)45 imxpwm_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
58 void
imxpwm_attach(struct imxpwm_softc * sc,void * aux)59 imxpwm_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
66 sc->sc_iot = aa->aa_iot;
67 sc->sc_intr = aa->aa_irq;
68 sc->sc_freq = imx51_get_clock(IMX51CLK_IPG_CLK_ROOT);
69
70 if (bus_space_map(aa->aa_iot, aa->aa_addr, aa->aa_size, 0, &sc->sc_ioh))
71 panic("%s: couldn't map", device_xname(sc->sc_dev));
72
73 sc->sc_ih = intr_establish(sc->sc_intr, IPL_BIO, IST_LEVEL,
74 imxpwm_intr, sc);
75
76 imxpwm_attach_common(sc);
77 }
78