From a1be5d649699e0eecfe5fc65130954435543cda4 Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 1 Mar 2012 15:35:50 +0000 Subject: ARM: riscpc: move time-acorn.c to mach-rpc Nothing but RiscPC makes use of the Acorn timekeeping code, so move it into mach-rpc. Signed-off-by: Russell King --- arch/arm/Kconfig | 1 - arch/arm/common/Kconfig | 3 -- arch/arm/common/Makefile | 1 - arch/arm/common/time-acorn.c | 95 -------------------------------------------- arch/arm/mach-rpc/Makefile | 2 +- arch/arm/mach-rpc/time.c | 95 ++++++++++++++++++++++++++++++++++++++++++++ 6 files changed, 96 insertions(+), 101 deletions(-) delete mode 100644 arch/arm/common/time-acorn.c create mode 100644 arch/arm/mach-rpc/time.c (limited to 'arch/arm') diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index a48aecc17eac..4b15d91fb81a 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -731,7 +731,6 @@ config ARCH_RPC bool "RiscPC" select ARCH_ACORN select FIQ - select TIMER_ACORN select ARCH_MAY_HAVE_PC_FDC select HAVE_PATA_PLATFORM select ISA_DMA_API diff --git a/arch/arm/common/Kconfig b/arch/arm/common/Kconfig index 81a933eb0903..3bb1d7589bd9 100644 --- a/arch/arm/common/Kconfig +++ b/arch/arm/common/Kconfig @@ -35,9 +35,6 @@ config DMABOUNCE bool select ZONE_DMA -config TIMER_ACORN - bool - config SHARP_LOCOMO bool diff --git a/arch/arm/common/Makefile b/arch/arm/common/Makefile index 6ea9b6f3607a..69feafe7286c 100644 --- a/arch/arm/common/Makefile +++ b/arch/arm/common/Makefile @@ -9,7 +9,6 @@ obj-$(CONFIG_PL330) += pl330.o obj-$(CONFIG_SA1111) += sa1111.o obj-$(CONFIG_PCI_HOST_VIA82C505) += via82c505.o obj-$(CONFIG_DMABOUNCE) += dmabounce.o -obj-$(CONFIG_TIMER_ACORN) += time-acorn.o obj-$(CONFIG_SHARP_LOCOMO) += locomo.o obj-$(CONFIG_SHARP_PARAM) += sharpsl_param.o obj-$(CONFIG_SHARP_SCOOP) += scoop.o diff --git a/arch/arm/common/time-acorn.c b/arch/arm/common/time-acorn.c deleted file mode 100644 index deeed561b168..000000000000 --- a/arch/arm/common/time-acorn.c +++ /dev/null @@ -1,95 +0,0 @@ -/* - * linux/arch/arm/common/time-acorn.c - * - * Copyright (c) 1996-2000 Russell King. - * - * 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. - * - * Changelog: - * 24-Sep-1996 RMK Created - * 10-Oct-1996 RMK Brought up to date with arch-sa110eval - * 04-Dec-1997 RMK Updated for new arch/arm/time.c - * 13=Jun-2004 DS Moved to arch/arm/common b/c shared w/CLPS7500 - */ -#include -#include -#include -#include -#include - -#include -#include - -#include - -unsigned long ioc_timer_gettimeoffset(void) -{ - unsigned int count1, count2, status; - long offset; - - ioc_writeb (0, IOC_T0LATCH); - barrier (); - count1 = ioc_readb(IOC_T0CNTL) | (ioc_readb(IOC_T0CNTH) << 8); - barrier (); - status = ioc_readb(IOC_IRQREQA); - barrier (); - ioc_writeb (0, IOC_T0LATCH); - barrier (); - count2 = ioc_readb(IOC_T0CNTL) | (ioc_readb(IOC_T0CNTH) << 8); - - offset = count2; - if (count2 < count1) { - /* - * We have not had an interrupt between reading count1 - * and count2. - */ - if (status & (1 << 5)) - offset -= LATCH; - } else if (count2 > count1) { - /* - * We have just had another interrupt between reading - * count1 and count2. - */ - offset -= LATCH; - } - - offset = (LATCH - offset) * (tick_nsec / 1000); - return (offset + LATCH/2) / LATCH; -} - -void __init ioctime_init(void) -{ - ioc_writeb(LATCH & 255, IOC_T0LTCHL); - ioc_writeb(LATCH >> 8, IOC_T0LTCHH); - ioc_writeb(0, IOC_T0GO); -} - -static irqreturn_t -ioc_timer_interrupt(int irq, void *dev_id) -{ - timer_tick(); - return IRQ_HANDLED; -} - -static struct irqaction ioc_timer_irq = { - .name = "timer", - .flags = IRQF_DISABLED, - .handler = ioc_timer_interrupt -}; - -/* - * Set up timer interrupt. - */ -static void __init ioc_timer_init(void) -{ - ioctime_init(); - setup_irq(IRQ_TIMER, &ioc_timer_irq); -} - -struct sys_timer ioc_timer = { - .init = ioc_timer_init, - .offset = ioc_timer_gettimeoffset, -}; - diff --git a/arch/arm/mach-rpc/Makefile b/arch/arm/mach-rpc/Makefile index aa77bc9efbbb..69f2c0656966 100644 --- a/arch/arm/mach-rpc/Makefile +++ b/arch/arm/mach-rpc/Makefile @@ -4,7 +4,7 @@ # Object file lists. -obj-y := dma.o irq.o riscpc.o +obj-y := dma.o irq.o riscpc.o time.o obj-m := obj-n := obj- := diff --git a/arch/arm/mach-rpc/time.c b/arch/arm/mach-rpc/time.c new file mode 100644 index 000000000000..deeed561b168 --- /dev/null +++ b/arch/arm/mach-rpc/time.c @@ -0,0 +1,95 @@ +/* + * linux/arch/arm/common/time-acorn.c + * + * Copyright (c) 1996-2000 Russell King. + * + * 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. + * + * Changelog: + * 24-Sep-1996 RMK Created + * 10-Oct-1996 RMK Brought up to date with arch-sa110eval + * 04-Dec-1997 RMK Updated for new arch/arm/time.c + * 13=Jun-2004 DS Moved to arch/arm/common b/c shared w/CLPS7500 + */ +#include +#include +#include +#include +#include + +#include +#include + +#include + +unsigned long ioc_timer_gettimeoffset(void) +{ + unsigned int count1, count2, status; + long offset; + + ioc_writeb (0, IOC_T0LATCH); + barrier (); + count1 = ioc_readb(IOC_T0CNTL) | (ioc_readb(IOC_T0CNTH) << 8); + barrier (); + status = ioc_readb(IOC_IRQREQA); + barrier (); + ioc_writeb (0, IOC_T0LATCH); + barrier (); + count2 = ioc_readb(IOC_T0CNTL) | (ioc_readb(IOC_T0CNTH) << 8); + + offset = count2; + if (count2 < count1) { + /* + * We have not had an interrupt between reading count1 + * and count2. + */ + if (status & (1 << 5)) + offset -= LATCH; + } else if (count2 > count1) { + /* + * We have just had another interrupt between reading + * count1 and count2. + */ + offset -= LATCH; + } + + offset = (LATCH - offset) * (tick_nsec / 1000); + return (offset + LATCH/2) / LATCH; +} + +void __init ioctime_init(void) +{ + ioc_writeb(LATCH & 255, IOC_T0LTCHL); + ioc_writeb(LATCH >> 8, IOC_T0LTCHH); + ioc_writeb(0, IOC_T0GO); +} + +static irqreturn_t +ioc_timer_interrupt(int irq, void *dev_id) +{ + timer_tick(); + return IRQ_HANDLED; +} + +static struct irqaction ioc_timer_irq = { + .name = "timer", + .flags = IRQF_DISABLED, + .handler = ioc_timer_interrupt +}; + +/* + * Set up timer interrupt. + */ +static void __init ioc_timer_init(void) +{ + ioctime_init(); + setup_irq(IRQ_TIMER, &ioc_timer_irq); +} + +struct sys_timer ioc_timer = { + .init = ioc_timer_init, + .offset = ioc_timer_gettimeoffset, +}; + -- cgit v1.2.3-59-g8ed1b