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      1 /* $NetBSD: omap3_prm.c,v 1.2 2021/01/27 03:10:20 thorpej Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2019 Jared McNeill <jmcneill (at) invisible.ca>
      5  * All rights reserved.
      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 AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  * 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: omap3_prm.c,v 1.2 2021/01/27 03:10:20 thorpej Exp $");
     31 
     32 #include <sys/param.h>
     33 #include <sys/bus.h>
     34 #include <sys/device.h>
     35 #include <sys/intr.h>
     36 #include <sys/systm.h>
     37 #include <sys/kernel.h>
     38 #include <sys/kmem.h>
     39 
     40 #include <dev/fdt/fdtvar.h>
     41 
     42 #include <arm/ti/ti_prcm.h>
     43 
     44 static int	omap3_prm_match(device_t, cfdata_t, void *);
     45 static void	omap3_prm_attach(device_t, device_t, void *);
     46 
     47 CFATTACH_DECL_NEW(omap3_prm, 0, omap3_prm_match, omap3_prm_attach, NULL, NULL);
     48 
     49 static const struct device_compatible_entry compat_data[] = {
     50 	{ .compat = "ti,omap3-prm" },
     51 	DEVICE_COMPAT_EOL
     52 };
     53 
     54 static int
     55 omap3_prm_match(device_t parent, cfdata_t cf, void *aux)
     56 {
     57 	struct fdt_attach_args * const faa = aux;
     58 
     59 	return of_compatible_match(faa->faa_phandle, compat_data);
     60 }
     61 
     62 static void
     63 omap3_prm_attach(device_t parent, device_t self, void *aux)
     64 {
     65 	struct fdt_attach_args * const faa = aux;
     66 	const int phandle = faa->faa_phandle;
     67 	int clocks;
     68 
     69 	aprint_naive("\n");
     70 	aprint_normal("\n");
     71 
     72 	fdt_add_bus(self, phandle, faa);
     73 
     74 	clocks = of_find_firstchild_byname(phandle, "clocks");
     75 	if (clocks > 0)
     76 		fdt_add_bus(self, clocks, faa);
     77 }
     78