Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 68 insertions, 0 deletions

diff --git a/arch/mips/pic32/pic32mzda/time.c b/arch/mips/pic32/pic32mzda/time.c
new file mode 100644
index 000000000..1894e5093
--- /dev/null
+++ b/arch/mips/pic32/pic32mzda/time.c
@@ -0,0 +1,68 @@
+/*
+ * Joshua Henderson <joshua.henderson@microchip.com>
+ * Copyright (C) 2015 Microchip Technology Inc.  All rights reserved.
+ *
+ *  This program is free software; you can distribute it and/or modify it
+ *  under the terms of the GNU General Public License (Version 2) as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope it will be useful, but WITHOUT
+ *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ *  for more details.
+ */
+#include <linux/clk-provider.h>
+#include <linux/clocksource.h>
+#include <linux/init.h>
+#include <linux/irqdomain.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
+
+#include <asm/time.h>
+
+#include "pic32mzda.h"
+
+static const struct of_device_id pic32_infra_match[] = {
+	{ .compatible = "microchip,pic32mzda-infra", },
+	{ },
+};
+
+#define DEFAULT_CORE_TIMER_INTERRUPT 0
+
+static unsigned int pic32_xlate_core_timer_irq(void)
+{
+	static struct device_node *node;
+	unsigned int irq;
+
+	node = of_find_matching_node(NULL, pic32_infra_match);
+
+	if (WARN_ON(!node))
+		goto default_map;
+
+	irq = irq_of_parse_and_map(node, 0);
+	if (!irq)
+		goto default_map;
+
+	return irq;
+
+default_map:
+
+	return irq_create_mapping(NULL, DEFAULT_CORE_TIMER_INTERRUPT);
+}
+
+unsigned int get_c0_compare_int(void)
+{
+	return pic32_xlate_core_timer_irq();
+}
+
+void __init plat_time_init(void)
+{
+	unsigned long rate = pic32_get_pbclk(7);
+
+	of_clk_init(NULL);
+
+	pr_info("CPU Clock: %ldMHz\n", rate / 1000000);
+	mips_hpt_frequency = rate / 2;
+
+	timer_probe();
+}