diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-03-02 07:44:16 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-03-02 07:44:16 -0800 |
commit | aebb2afd5420c860b7fbc3882a323ef1247fbf16 (patch) | |
tree | 05ee0efcebca5ec421de44de7a6d6271088c64a8 /arch/mips/pnx8550/common/time.c | |
parent | 8eae508b7c6ff502a71d0293b69e97c5505d5840 (diff) | |
parent | edb15d83a875a1f4b1576188844db5c330c3267d (diff) |
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle:
o Add basic support for the Mediatek/Ralink Wireless SoC family.
o The Qualcomm Atheros platform is extended by support for the new
QCA955X SoC series as well as a bunch of patches that get the code
ready for OF support.
o Lantiq and BCM47XX platform have a few improvements and bug fixes.
o MIPS has sent a few patches that get the kernel ready for the
upcoming microMIPS support.
o The rest of the series is made up of small bug fixes and cleanups
that relate to various parts of the MIPS code. The biggy in there is
a whitespace cleanup. After I was sent another set of whitespace
cleanup patches I decided it was the time to clean the whitespace
"issues" for once and and that touches many files below arch/mips/.
Fix up silly conflicts, mostly due to whitespace cleanups.
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (105 commits)
MIPS: Quit exporting kernel internel break codes to uapi/asm/break.h
MIPS: remove broken conditional inside vpe loader code
MIPS: SMTC: fix implicit declaration of set_vi_handler
MIPS: early_printk: drop __init annotations
MIPS: Probe for and report hardware virtualization support.
MIPS: ath79: add support for the Qualcomm Atheros AP136-010 board
MIPS: ath79: add USB controller registration code for the QCA955X SoCs
MIPS: ath79: add PCI controller registration code for the QCA955X SoCs
MIPS: ath79: add WMAC registration code for the QCA955X SoCs
MIPS: ath79: register UART for the QCA955X SoCs
MIPS: ath79: add QCA955X specific glue to ath79_device_reset_{set, clear}
MIPS: ath79: add GPIO setup code for the QCA955X SoCs
MIPS: ath79: add IRQ handling code for the QCA955X SoCs
MIPS: ath79: add clock setup code for the QCA955X SoCs
MIPS: ath79: add SoC detection code for the QCA955X SoCs
MIPS: ath79: add early printk support for the QCA955X SoCs
MIPS: ath79: fix WMAC IRQ resource assignment
mips: reserve elfcorehdr
mips: Make sure kernel memory is in iomem
MIPS: ath79: use dynamically allocated USB platform devices
...
Diffstat (limited to 'arch/mips/pnx8550/common/time.c')
-rw-r--r-- | arch/mips/pnx8550/common/time.c | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/arch/mips/pnx8550/common/time.c b/arch/mips/pnx8550/common/time.c deleted file mode 100644 index 831d6b369e9..00000000000 --- a/arch/mips/pnx8550/common/time.c +++ /dev/null @@ -1,151 +0,0 @@ -/* - * Copyright 2001, 2002, 2003 MontaVista Software Inc. - * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net - * Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org) - * - * Common time service routines for MIPS machines. See - * Documents/MIPS/README.txt. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/sched.h> -#include <linux/param.h> -#include <linux/time.h> -#include <linux/timer.h> -#include <linux/smp.h> -#include <linux/kernel_stat.h> -#include <linux/spinlock.h> -#include <linux/interrupt.h> - -#include <asm/bootinfo.h> -#include <asm/cpu.h> -#include <asm/time.h> -#include <asm/hardirq.h> -#include <asm/div64.h> -#include <asm/debug.h> - -#include <int.h> -#include <cm.h> - -static unsigned long cpj; - -static cycle_t hpt_read(struct clocksource *cs) -{ - return read_c0_count2(); -} - -static struct clocksource pnx_clocksource = { - .name = "pnx8xxx", - .rating = 200, - .read = hpt_read, - .flags = CLOCK_SOURCE_IS_CONTINUOUS, -}; - -static irqreturn_t pnx8xxx_timer_interrupt(int irq, void *dev_id) -{ - struct clock_event_device *c = dev_id; - - /* clear MATCH, signal the event */ - c->event_handler(c); - - return IRQ_HANDLED; -} - -static struct irqaction pnx8xxx_timer_irq = { - .handler = pnx8xxx_timer_interrupt, - .flags = IRQF_PERCPU | IRQF_TIMER, - .name = "pnx8xxx_timer", -}; - -static irqreturn_t monotonic_interrupt(int irq, void *dev_id) -{ - /* Timer 2 clear interrupt */ - write_c0_compare2(-1); - return IRQ_HANDLED; -} - -static struct irqaction monotonic_irqaction = { - .handler = monotonic_interrupt, - .flags = IRQF_TIMER, - .name = "Monotonic timer", -}; - -static int pnx8xxx_set_next_event(unsigned long delta, - struct clock_event_device *evt) -{ - write_c0_compare(delta); - return 0; -} - -static struct clock_event_device pnx8xxx_clockevent = { - .name = "pnx8xxx_clockevent", - .features = CLOCK_EVT_FEAT_ONESHOT, - .set_next_event = pnx8xxx_set_next_event, -}; - -static inline void timer_ack(void) -{ - write_c0_compare(cpj); -} - -__init void plat_time_init(void) -{ - unsigned int configPR; - unsigned int n; - unsigned int m; - unsigned int p; - unsigned int pow2p; - - pnx8xxx_clockevent.cpumask = cpu_none_mask; - clockevents_register_device(&pnx8xxx_clockevent); - clocksource_register(&pnx_clocksource); - - /* Timer 1 start */ - configPR = read_c0_config7(); - configPR &= ~0x00000008; - write_c0_config7(configPR); - - /* Timer 2 start */ - configPR = read_c0_config7(); - configPR &= ~0x00000010; - write_c0_config7(configPR); - - /* Timer 3 stop */ - configPR = read_c0_config7(); - configPR |= 0x00000020; - write_c0_config7(configPR); - - - /* PLL0 sets MIPS clock (PLL1 <=> TM1, PLL6 <=> TM2, PLL5 <=> mem) */ - /* (but only if CLK_MIPS_CTL select value [bits 3:1] is 1: FIXME) */ - - n = (PNX8550_CM_PLL0_CTL & PNX8550_CM_PLL_N_MASK) >> 16; - m = (PNX8550_CM_PLL0_CTL & PNX8550_CM_PLL_M_MASK) >> 8; - p = (PNX8550_CM_PLL0_CTL & PNX8550_CM_PLL_P_MASK) >> 2; - pow2p = (1 << p); - - db_assert(m != 0 && pow2p != 0); - - /* - * Compute the frequency as in the PNX8550 User Manual 1.0, p.186 - * (a.k.a. 8-10). Divide by HZ for a timer offset that results in - * HZ timer interrupts per second. - */ - mips_hpt_frequency = 27UL * ((1000000UL * n)/(m * pow2p)); - cpj = DIV_ROUND_CLOSEST(mips_hpt_frequency, HZ); - write_c0_count(0); - timer_ack(); - - /* Setup Timer 2 */ - write_c0_count2(0); - write_c0_compare2(0xffffffff); - - setup_irq(PNX8550_INT_TIMER1, &pnx8xxx_timer_irq); - setup_irq(PNX8550_INT_TIMER2, &monotonic_irqaction); -} |