From 3a083227a45cbbf5d29e6fe7c093af9e09905d4d Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 5 Nov 2011 17:38:32 +0000 Subject: [PATCH] ARM: clps711x: consolidate irq/mm/time code into a single file The separate files for clps711x which contain maybe one or two data structures or functions is an inefficient use of files, and encourages further small files as other changes happen. Collapse down these into a single core.c file. Signed-off-by: Russell King --- arch/arm/mach-clps711x/Makefile | 2 +- arch/arm/mach-clps711x/{irq.c => common.c} | 95 ++++++++++++++++++++-- arch/arm/mach-clps711x/mm.c | 48 ----------- arch/arm/mach-clps711x/time.c | 84 ------------------- 4 files changed, 88 insertions(+), 141 deletions(-) rename arch/arm/mach-clps711x/{irq.c => common.c} (59%) delete mode 100644 arch/arm/mach-clps711x/mm.c delete mode 100644 arch/arm/mach-clps711x/time.c diff --git a/arch/arm/mach-clps711x/Makefile b/arch/arm/mach-clps711x/Makefile index 4a197315f0cf..f2f0256232e3 100644 --- a/arch/arm/mach-clps711x/Makefile +++ b/arch/arm/mach-clps711x/Makefile @@ -4,7 +4,7 @@ # Object file lists. -obj-y := irq.o mm.o time.o +obj-y := common.o obj-m := obj-n := obj- := diff --git a/arch/arm/mach-clps711x/irq.c b/arch/arm/mach-clps711x/common.c similarity index 59% rename from arch/arm/mach-clps711x/irq.c rename to arch/arm/mach-clps711x/common.c index c2eceee645e3..ced2a4e406f4 100644 --- a/arch/arm/mach-clps711x/irq.c +++ b/arch/arm/mach-clps711x/common.c @@ -1,7 +1,9 @@ /* - * linux/arch/arm/mach-clps711x/irq.c + * linux/arch/arm/mach-clps711x/core.c * - * Copyright (C) 2000 Deep Blue Solutions Ltd. + * Core support for the CLPS711x-based machines. + * + * Copyright (C) 2001,2011 Deep Blue Solutions Ltd * * 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 @@ -17,16 +19,42 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +#include +#include #include -#include +#include #include +#include +#include +#include -#include +#include #include #include - +#include +#include +#include +#include +#include #include +/* + * This maps the generic CLPS711x registers + */ +static struct map_desc clps711x_io_desc[] __initdata = { + { + .virtual = CLPS7111_VIRT_BASE, + .pfn = __phys_to_pfn(CLPS7111_PHYS_BASE), + .length = SZ_1M, + .type = MT_DEVICE + } +}; + +void __init clps711x_map_io(void) +{ + iotable_init(clps711x_io_desc, ARRAY_SIZE(clps711x_io_desc)); +} + static void int1_mask(struct irq_data *d) { u32 intmr1; @@ -112,15 +140,15 @@ void __init clps711x_init_irq(void) for (i = 0; i < NR_IRQS; i++) { if (INT1_IRQS & (1 << i)) { - irq_set_chip_and_handler(i, &int1_chip, + irq_set_chip_and_handler(i, &int1_chip, handle_level_irq); - set_irq_flags(i, IRQF_VALID | IRQF_PROBE); + set_irq_flags(i, IRQF_VALID | IRQF_PROBE); } if (INT2_IRQS & (1 << i)) { irq_set_chip_and_handler(i, &int2_chip, handle_level_irq); set_irq_flags(i, IRQF_VALID | IRQF_PROBE); - } + } } /* @@ -141,3 +169,54 @@ void __init clps711x_init_irq(void) clps_writel(0, SYNCIO); clps_writel(0, KBDEOI); } + +/* + * gettimeoffset() returns time since last timer tick, in usecs. + * + * 'LATCH' is hwclock ticks (see CLOCK_TICK_RATE in timex.h) per jiffy. + * 'tick' is usecs per jiffy. + */ +static unsigned long clps711x_gettimeoffset(void) +{ + unsigned long hwticks; + hwticks = LATCH - (clps_readl(TC2D) & 0xffff); /* since last underflow */ + return (hwticks * (tick_nsec / 1000)) / LATCH; +} + +/* + * IRQ handler for the timer + */ +static irqreturn_t p720t_timer_interrupt(int irq, void *dev_id) +{ + timer_tick(); + return IRQ_HANDLED; +} + +static struct irqaction clps711x_timer_irq = { + .name = "CLPS711x Timer Tick", + .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, + .handler = p720t_timer_interrupt, +}; + +static void __init clps711x_timer_init(void) +{ + struct timespec tv; + unsigned int syscon; + + syscon = clps_readl(SYSCON1); + syscon |= SYSCON1_TC2S | SYSCON1_TC2M; + clps_writel(syscon, SYSCON1); + + clps_writel(LATCH-1, TC2D); /* 512kHz / 100Hz - 1 */ + + setup_irq(IRQ_TC2OI, &clps711x_timer_irq); + + tv.tv_nsec = 0; + tv.tv_sec = clps_readl(RTCDR); + do_settimeofday(&tv); +} + +struct sys_timer clps711x_timer = { + .init = clps711x_timer_init, + .offset = clps711x_gettimeoffset, +}; diff --git a/arch/arm/mach-clps711x/mm.c b/arch/arm/mach-clps711x/mm.c deleted file mode 100644 index 986592176767..000000000000 --- a/arch/arm/mach-clps711x/mm.c +++ /dev/null @@ -1,48 +0,0 @@ -/* - * linux/arch/arm/mach-clps711x/mm.c - * - * Generic MM setup for the CLPS711x-based machines. - * - * Copyright (C) 2001 Deep Blue Solutions Ltd - * - * 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. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ -#include -#include -#include - -#include -#include -#include -#include -#include -#include - -/* - * This maps the generic CLPS711x registers - */ -static struct map_desc clps711x_io_desc[] __initdata = { - { - .virtual = CLPS7111_VIRT_BASE, - .pfn = __phys_to_pfn(CLPS7111_PHYS_BASE), - .length = SZ_1M, - .type = MT_DEVICE - } -}; - -void __init clps711x_map_io(void) -{ - iotable_init(clps711x_io_desc, ARRAY_SIZE(clps711x_io_desc)); -} diff --git a/arch/arm/mach-clps711x/time.c b/arch/arm/mach-clps711x/time.c deleted file mode 100644 index d581ef0bcd24..000000000000 --- a/arch/arm/mach-clps711x/time.c +++ /dev/null @@ -1,84 +0,0 @@ -/* - * linux/arch/arm/mach-clps711x/time.c - * - * Copyright (C) 2001 Deep Blue Solutions Ltd. - * - * 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. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include - -#include - - -/* - * gettimeoffset() returns time since last timer tick, in usecs. - * - * 'LATCH' is hwclock ticks (see CLOCK_TICK_RATE in timex.h) per jiffy. - * 'tick' is usecs per jiffy. - */ -static unsigned long clps711x_gettimeoffset(void) -{ - unsigned long hwticks; - hwticks = LATCH - (clps_readl(TC2D) & 0xffff); /* since last underflow */ - return (hwticks * (tick_nsec / 1000)) / LATCH; -} - -/* - * IRQ handler for the timer - */ -static irqreturn_t -p720t_timer_interrupt(int irq, void *dev_id) -{ - timer_tick(); - return IRQ_HANDLED; -} - -static struct irqaction clps711x_timer_irq = { - .name = "CLPS711x Timer Tick", - .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, - .handler = p720t_timer_interrupt, -}; - -static void __init clps711x_timer_init(void) -{ - struct timespec tv; - unsigned int syscon; - - syscon = clps_readl(SYSCON1); - syscon |= SYSCON1_TC2S | SYSCON1_TC2M; - clps_writel(syscon, SYSCON1); - - clps_writel(LATCH-1, TC2D); /* 512kHz / 100Hz - 1 */ - - setup_irq(IRQ_TC2OI, &clps711x_timer_irq); - - tv.tv_nsec = 0; - tv.tv_sec = clps_readl(RTCDR); - do_settimeofday(&tv); -} - -struct sys_timer clps711x_timer = { - .init = clps711x_timer_init, - .offset = clps711x_gettimeoffset, -};