mcs814x: remove linux 3.3 support

[openwrt/svn-archive/archive.git] / target / linux / mcs814x / files-3.3 / arch / arm / mach-mcs814x / timer.c

diff --git a/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/timer.c b/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/timer.c
deleted file mode 100644 (file)
index 571f9e8..0000000
--- a/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/timer.c
+++ /dev/null
@@ -1,135 +0,0 @@
-/*
- * Moschip MCS814x timer routines
- *
- * Copyright (C) 2012, Florian Fainelli <florian@openwrt.org>
- *
- * Licensed under GPLv2
- */
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
-#include <linux/time.h>
-#include <linux/timex.h>
-#include <linux/irq.h>
-#include <linux/err.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-
-#include <asm/mach/time.h>
-#include <mach/mcs814x.h>
-
-/* Timer block registers */
-#define TIMER_VAL      0x00
-#define TIMER_CTL      0x04
-#define  TIMER_CTL_EN  0x01
-#define  TIMER_CTL_DBG 0x02
-
-static u32 last_reload;
-static u32 timer_correct;
-static u32 clock_rate;
-static u32 timer_reload_value;
-static void __iomem *mcs814x_timer_base;
-
-static inline unsigned long ticks2usecs(u32 x)
-{
-       return x / (clock_rate / 1000000);
-}
-
-/*
- * Returns number of ms since last clock interrupt.  Note that interrupts
- * will have been disabled by do_gettimeoffset()
- */
-static unsigned long mcs814x_gettimeoffset(void)
-{
-       u32 ticks = readl_relaxed(mcs814x_timer_base + TIMER_VAL);
-
-       if (ticks < last_reload)
-               return ticks2usecs(ticks + (u32)(0xffffffff - last_reload));
-       else
-               return ticks2usecs(ticks - last_reload);
-}
-
-
-static irqreturn_t mcs814x_timer_interrupt(int irq, void *dev_id)
-{
-       u32 count = readl_relaxed(mcs814x_timer_base + TIMER_VAL);
-
-       /* take into account delay up to this moment */
-       last_reload = count + timer_correct + timer_reload_value;
-
-       if (last_reload < timer_reload_value) {
-               last_reload = timer_reload_value;
-       } else {
-               if (timer_correct == 0)
-                       timer_correct = readl_relaxed(mcs814x_timer_base + TIMER_VAL) - count;
-       }
-       writel_relaxed(last_reload, mcs814x_timer_base + TIMER_VAL);
-
-       timer_tick();
-
-       return IRQ_HANDLED;
-}
-
-static struct irqaction mcs814x_timer_irq = {
-       .name           = "mcs814x-timer",
-       .flags          = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
-       .handler        = mcs814x_timer_interrupt,
-};
-
-static struct of_device_id mcs814x_timer_ids[] = {
-       { .compatible = "moschip,mcs814x-timer" },
-       { /* sentinel */ },
-};
-
-static void __init mcs814x_of_timer_init(void)
-{
-       struct device_node *np;
-       const unsigned int *intspec;
-
-       np = of_find_matching_node(NULL, mcs814x_timer_ids);
-       if (!np)
-               panic("unable to find compatible timer node in dtb");
-
-       mcs814x_timer_base = of_iomap(np, 0);
-       if (!mcs814x_timer_base)
-               panic("unable to remap timer cpu registers");
-
-       intspec = of_get_property(np, "interrupts", NULL);
-       if (!intspec)
-               panic("no interrupts property for timer");
-
-       mcs814x_timer_irq.irq = be32_to_cpup(intspec);
-}
-
-static void __init mcs814x_timer_init(void)
-{
-       struct clk *clk;
-
-       clk = clk_get_sys("timer0", NULL);
-       if (IS_ERR_OR_NULL(clk))
-               panic("unable to get timer0 clock");
-
-       clock_rate = clk_get_rate(clk);
-
-       mcs814x_of_timer_init();
-
-       pr_info("Timer frequency: %d (kHz)\n", clock_rate / 1000);
-
-       timer_reload_value = 0xffffffff - (clock_rate / HZ);
-
-       /* disable timer */
-       writel_relaxed(~TIMER_CTL_EN, mcs814x_timer_base + TIMER_CTL);
-       writel_relaxed(timer_reload_value, mcs814x_timer_base + TIMER_VAL);
-       last_reload = timer_reload_value;
-
-       setup_irq(mcs814x_timer_irq.irq, &mcs814x_timer_irq);
-       /* enable timer, stop timer in debug mode */
-       writel_relaxed(TIMER_CTL_EN | TIMER_CTL_DBG,
-               mcs814x_timer_base + TIMER_CTL);
-}
-
-struct sys_timer mcs814x_timer = {
-       .init   = mcs814x_timer_init,
-       .offset = mcs814x_gettimeoffset,
-};