From 0223ab780ff45867509de41acff0e7f7a6ef430c Mon Sep 17 00:00:00 2001
From: jmcneill <jmcneill@NetBSD.org>
Date: Sat, 26 Oct 2019 15:58:55 +0000
Subject: [PATCH] Add bus driver for TI sysc interconncet.

---
 sys/arch/arm/ti/files.ti  |  9 +++--
 sys/arch/arm/ti/ti_sysc.c | 72 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 79 insertions(+), 2 deletions(-)
 create mode 100644 sys/arch/arm/ti/ti_sysc.c

diff --git a/sys/arch/arm/ti/files.ti b/sys/arch/arm/ti/files.ti
index bdd707cfcfa8..23430389cdb1 100644
--- a/sys/arch/arm/ti/files.ti
+++ b/sys/arch/arm/ti/files.ti
@@ -1,4 +1,4 @@
-#	$NetBSD: files.ti,v 1.5 2019/10/26 14:57:27 jmcneill Exp $
+#	$NetBSD: files.ti,v 1.6 2019/10/26 15:58:55 jmcneill Exp $
 #
 
 file	arch/arm/ti/ti_platform.c	soc_ti
@@ -6,7 +6,12 @@ file	arch/arm/ti/ti_platform.c	soc_ti
 # Interrupt controller
 device	omapintc: pic, pic_splfuncs
 attach  omapintc at fdt
-file	arch/arm/ti/ti_omapintc.c omapintc
+file	arch/arm/ti/ti_omapintc.c	omapintc
+
+# sysc interconnect
+device	tisysc { } : fdt, ti_prcm
+attach	tisysc at fdt with ti_sysc
+file	arch/arm/ti/ti_sysc.c		ti_sysc
 
 # PRCM
 define	ti_prcm
diff --git a/sys/arch/arm/ti/ti_sysc.c b/sys/arch/arm/ti/ti_sysc.c
new file mode 100644
index 000000000000..fc0530e88a9d
--- /dev/null
+++ b/sys/arch/arm/ti/ti_sysc.c
@@ -0,0 +1,72 @@
+/* $NetBSD: ti_sysc.c,v 1.1 2019/10/26 15:58:55 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2019 Jared McNeill <jmcneill@invisible.ca>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: ti_sysc.c,v 1.1 2019/10/26 15:58:55 jmcneill Exp $");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/device.h>
+#include <sys/intr.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/kmem.h>
+
+#include <dev/fdt/fdtvar.h>
+
+#include <arm/ti/ti_prcm.h>
+
+static int	ti_sysc_match(device_t, cfdata_t, void *);
+static void	ti_sysc_attach(device_t, device_t, void *);
+
+CFATTACH_DECL_NEW(ti_sysc, 0, ti_sysc_match, ti_sysc_attach, NULL, NULL);
+
+static const char * compatible[] = {
+	"ti,sysc",
+	NULL
+};
+
+static int
+ti_sysc_match(device_t parent, cfdata_t cf, void *aux)
+{
+	struct fdt_attach_args * const faa = aux;
+
+	return of_match_compatible(faa->faa_phandle, compatible);
+}
+
+static void
+ti_sysc_attach(device_t parent, device_t self, void *aux)
+{
+	struct fdt_attach_args * const faa = aux;
+	const int phandle = faa->faa_phandle;
+
+	aprint_naive("\n");
+	aprint_normal("\n");
+
+	fdt_add_bus(self, phandle, faa);
+}