summaryrefslogtreecommitdiffstats
path: root/drivers/clocksource
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2014-04-02 13:15:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-04-02 13:15:58 -0700
commit467cbd207abdbfe29514b5804a22661ab6e80dc6 (patch)
tree026a03bfcb0f755c5d61fcf288d98582ebd55093 /drivers/clocksource
parent7125764c5d1a5c72d522f1011b6cc8b8100b48fe (diff)
parentb5660ba76b41af69a0c09d434927bb4b4cadd4b1 (diff)
Merge branch 'x86-nuke-platforms-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 old platform removal from Peter Anvin: "This patchset removes support for several completely obsolete platforms, where the maintainers either have completely vanished or acked the removal. For some of them it is questionable if there even exists functional specimens of the hardware" Geert Uytterhoeven apparently thought this was a April Fool's pull request ;) * 'x86-nuke-platforms-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, platforms: Remove NUMAQ x86, platforms: Remove SGI Visual Workstation x86, apic: Remove support for IBM Summit/EXA chipset x86, apic: Remove support for ia32-based Unisys ES7000
Diffstat (limited to 'drivers/clocksource')
-rw-r--r--drivers/clocksource/Makefile1
-rw-r--r--drivers/clocksource/cyclone.c113
2 files changed, 0 insertions, 114 deletions
diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile
index aed3488d942..f3fe4cb4974 100644
--- a/drivers/clocksource/Makefile
+++ b/drivers/clocksource/Makefile
@@ -1,6 +1,5 @@
obj-$(CONFIG_CLKSRC_OF) += clksrc-of.o
obj-$(CONFIG_ATMEL_TCB_CLKSRC) += tcb_clksrc.o
-obj-$(CONFIG_X86_CYCLONE_TIMER) += cyclone.o
obj-$(CONFIG_X86_PM_TIMER) += acpi_pm.o
obj-$(CONFIG_SCx200HR_TIMER) += scx200_hrt.o
obj-$(CONFIG_CS5535_CLOCK_EVENT_SRC) += cs5535-clockevt.o
diff --git a/drivers/clocksource/cyclone.c b/drivers/clocksource/cyclone.c
deleted file mode 100644
index 9e0998f2288..00000000000
--- a/drivers/clocksource/cyclone.c
+++ /dev/null
@@ -1,113 +0,0 @@
-#include <linux/clocksource.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/timex.h>
-#include <linux/init.h>
-
-#include <asm/pgtable.h>
-#include <asm/io.h>
-
-#include <asm/mach_timer.h>
-
-#define CYCLONE_CBAR_ADDR 0xFEB00CD0 /* base address ptr */
-#define CYCLONE_PMCC_OFFSET 0x51A0 /* offset to control register */
-#define CYCLONE_MPCS_OFFSET 0x51A8 /* offset to select register */
-#define CYCLONE_MPMC_OFFSET 0x51D0 /* offset to count register */
-#define CYCLONE_TIMER_FREQ 99780000 /* 100Mhz, but not really */
-#define CYCLONE_TIMER_MASK CLOCKSOURCE_MASK(32) /* 32 bit mask */
-
-int use_cyclone = 0;
-static void __iomem *cyclone_ptr;
-
-static cycle_t read_cyclone(struct clocksource *cs)
-{
- return (cycle_t)readl(cyclone_ptr);
-}
-
-static struct clocksource clocksource_cyclone = {
- .name = "cyclone",
- .rating = 250,
- .read = read_cyclone,
- .mask = CYCLONE_TIMER_MASK,
- .flags = CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
-static int __init init_cyclone_clocksource(void)
-{
- unsigned long base; /* saved value from CBAR */
- unsigned long offset;
- u32 __iomem* volatile cyclone_timer; /* Cyclone MPMC0 register */
- u32 __iomem* reg;
- int i;
-
- /* make sure we're on a summit box: */
- if (!use_cyclone)
- return -ENODEV;
-
- printk(KERN_INFO "Summit chipset: Starting Cyclone Counter.\n");
-
- /* find base address: */
- offset = CYCLONE_CBAR_ADDR;
- reg = ioremap_nocache(offset, sizeof(reg));
- if (!reg) {
- printk(KERN_ERR "Summit chipset: Could not find valid CBAR register.\n");
- return -ENODEV;
- }
- /* even on 64bit systems, this is only 32bits: */
- base = readl(reg);
- iounmap(reg);
- if (!base) {
- printk(KERN_ERR "Summit chipset: Could not find valid CBAR value.\n");
- return -ENODEV;
- }
-
- /* setup PMCC: */
- offset = base + CYCLONE_PMCC_OFFSET;
- reg = ioremap_nocache(offset, sizeof(reg));
- if (!reg) {
- printk(KERN_ERR "Summit chipset: Could not find valid PMCC register.\n");
- return -ENODEV;
- }
- writel(0x00000001,reg);
- iounmap(reg);
-
- /* setup MPCS: */
- offset = base + CYCLONE_MPCS_OFFSET;
- reg = ioremap_nocache(offset, sizeof(reg));
- if (!reg) {
- printk(KERN_ERR "Summit chipset: Could not find valid MPCS register.\n");
- return -ENODEV;
- }
- writel(0x00000001,reg);
- iounmap(reg);
-
- /* map in cyclone_timer: */
- offset = base + CYCLONE_MPMC_OFFSET;
- cyclone_timer = ioremap_nocache(offset, sizeof(u64));
- if (!cyclone_timer) {
- printk(KERN_ERR "Summit chipset: Could not find valid MPMC register.\n");
- return -ENODEV;
- }
-
- /* quick test to make sure its ticking: */
- for (i = 0; i < 3; i++){
- u32 old = readl(cyclone_timer);
- int stall = 100;
-
- while (stall--)
- barrier();
-
- if (readl(cyclone_timer) == old) {
- printk(KERN_ERR "Summit chipset: Counter not counting! DISABLED\n");
- iounmap(cyclone_timer);
- cyclone_timer = NULL;
- return -ENODEV;
- }
- }
- cyclone_ptr = cyclone_timer;
-
- return clocksource_register_hz(&clocksource_cyclone,
- CYCLONE_TIMER_FREQ);
-}
-
-arch_initcall(init_cyclone_clocksource);