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      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
     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
     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