clocksource: dw_apb_timer: Add common DTS glue for dw_apb_timer

[firefly-linux-kernel-4.4.55.git] / arch / arm / mach-picoxcell / time.c

diff --git a/arch/arm/mach-picoxcell/time.c b/arch/arm/mach-picoxcell/time.c
deleted file mode 100644 (file)
index 2ecba67..0000000
--- a/arch/arm/mach-picoxcell/time.c
+++ /dev/null
@@ -1,121 +0,0 @@
-/*
- * Copyright (c) 2011 Picochip Ltd., Jamie Iles
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * All enquiries to support@picochip.com
- */
-#include <linux/dw_apb_timer.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-
-#include <asm/mach/time.h>
-#include <asm/sched_clock.h>
-
-#include "common.h"
-
-static void timer_get_base_and_rate(struct device_node *np,
-                                   void __iomem **base, u32 *rate)
-{
-       *base = of_iomap(np, 0);
-
-       if (!*base)
-               panic("Unable to map regs for %s", np->name);
-
-       if (of_property_read_u32(np, "clock-freq", rate))
-               panic("No clock-freq property for %s", np->name);
-}
-
-static void picoxcell_add_clockevent(struct device_node *event_timer)
-{
-       void __iomem *iobase;
-       struct dw_apb_clock_event_device *ced;
-       u32 irq, rate;
-
-       irq = irq_of_parse_and_map(event_timer, 0);
-       if (irq == NO_IRQ)
-               panic("No IRQ for clock event timer");
-
-       timer_get_base_and_rate(event_timer, &iobase, &rate);
-
-       ced = dw_apb_clockevent_init(0, event_timer->name, 300, iobase, irq,
-                                    rate);
-       if (!ced)
-               panic("Unable to initialise clockevent device");
-
-       dw_apb_clockevent_register(ced);
-}
-
-static void picoxcell_add_clocksource(struct device_node *source_timer)
-{
-       void __iomem *iobase;
-       struct dw_apb_clocksource *cs;
-       u32 rate;
-
-       timer_get_base_and_rate(source_timer, &iobase, &rate);
-
-       cs = dw_apb_clocksource_init(300, source_timer->name, iobase, rate);
-       if (!cs)
-               panic("Unable to initialise clocksource device");
-
-       dw_apb_clocksource_start(cs);
-       dw_apb_clocksource_register(cs);
-}
-
-static void __iomem *sched_io_base;
-
-static u32 picoxcell_read_sched_clock(void)
-{
-       return __raw_readl(sched_io_base);
-}
-
-static const struct of_device_id picoxcell_rtc_ids[] __initconst = {
-       { .compatible = "picochip,pc3x2-rtc" },
-       { /* Sentinel */ },
-};
-
-static void picoxcell_init_sched_clock(void)
-{
-       struct device_node *sched_timer;
-       u32 rate;
-
-       sched_timer = of_find_matching_node(NULL, picoxcell_rtc_ids);
-       if (!sched_timer)
-               panic("No RTC for sched clock to use");
-
-       timer_get_base_and_rate(sched_timer, &sched_io_base, &rate);
-       of_node_put(sched_timer);
-
-       setup_sched_clock(picoxcell_read_sched_clock, 32, rate);
-}
-
-static const struct of_device_id picoxcell_timer_ids[] __initconst = {
-       { .compatible = "picochip,pc3x2-timer" },
-       {},
-};
-
-static void __init picoxcell_timer_init(void)
-{
-       struct device_node *event_timer, *source_timer;
-
-       event_timer = of_find_matching_node(NULL, picoxcell_timer_ids);
-       if (!event_timer)
-               panic("No timer for clockevent");
-       picoxcell_add_clockevent(event_timer);
-
-       source_timer = of_find_matching_node(event_timer, picoxcell_timer_ids);
-       if (!source_timer)
-               panic("No timer for clocksource");
-       picoxcell_add_clocksource(source_timer);
-
-       of_node_put(source_timer);
-
-       picoxcell_init_sched_clock();
-}
-
-struct sys_timer picoxcell_timer = {
-       .init = picoxcell_timer_init,
-};