From mboxrd@z Thu Jan 1 00:00:00 1970 From: marc.zyngier@arm.com (Marc Zyngier) Date: Thu, 16 Jun 2011 20:06:34 +0100 Subject: [RFC PATCH 06/16] ARM: local timers: move Tegra to LOCAL_TIMER_DEVICES/ARM_SMP_TWD In-Reply-To: <1308251204-16719-1-git-send-email-marc.zyngier@arm.com> References: <1308251204-16719-1-git-send-email-marc.zyngier@arm.com> Message-ID: <1308251204-16719-7-git-send-email-marc.zyngier@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Convert the Tegra platforms to use the new arm_smp_twd driver. Add the platform device and register it as early platform device. Tested on a Harmony board. Cc: Colin Cross Cc: Erik Gilling Cc: Olof Johansson Signed-off-by: Marc Zyngier --- arch/arm/mach-tegra/Kconfig | 2 ++ arch/arm/mach-tegra/Makefile | 2 +- arch/arm/mach-tegra/localtimer.c | 27 --------------------------- arch/arm/mach-tegra/timer.c | 32 +++++++++++++++++++++++++++----- 4 files changed, 30 insertions(+), 33 deletions(-) delete mode 100644 arch/arm/mach-tegra/localtimer.c diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig index 5ec1846..4b05f02 100644 --- a/arch/arm/mach-tegra/Kconfig +++ b/arch/arm/mach-tegra/Kconfig @@ -9,6 +9,8 @@ config ARCH_TEGRA_2x_SOC bool "Tegra 2 family" select CPU_V7 select ARM_GIC + select LOCAL_TIMER_DEVICES + select ARM_SMP_TWD select ARCH_REQUIRE_GPIOLIB select USB_ARCH_HAS_EHCI if USB_SUPPORT select USB_ULPI if USB_SUPPORT diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile index 823c703..efbddfc 100644 --- a/arch/arm/mach-tegra/Makefile +++ b/arch/arm/mach-tegra/Makefile @@ -12,7 +12,7 @@ obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += clock.o obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra2_clocks.o obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra2_emc.o obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += pinmux-t2-tables.o -obj-$(CONFIG_SMP) += platsmp.o localtimer.o headsmp.o +obj-$(CONFIG_SMP) += platsmp.o headsmp.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o obj-$(CONFIG_TEGRA_SYSTEM_DMA) += dma.o obj-$(CONFIG_CPU_FREQ) += cpu-tegra.o diff --git a/arch/arm/mach-tegra/localtimer.c b/arch/arm/mach-tegra/localtimer.c deleted file mode 100644 index 97cd0a9..0000000 --- a/arch/arm/mach-tegra/localtimer.c +++ /dev/null @@ -1,27 +0,0 @@ -/* - * arch/arm/mach-tegra/localtimer.c - * - * Copyright (C) 2002 ARM Ltd. - * All Rights Reserved - * - * 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. - */ -#include -#include -#include -#include -#include -#include -#include - -/* - * Setup the local clock events for a CPU. - */ -int __cpuinit local_timer_setup(struct clock_event_device *evt) -{ - evt->irq = gic_ppi_to_vppi(IRQ_LOCALTIMER); - twd_timer_setup(evt); - return 0; -} diff --git a/arch/arm/mach-tegra/timer.c b/arch/arm/mach-tegra/timer.c index 9035042..4e1ecd0 100644 --- a/arch/arm/mach-tegra/timer.c +++ b/arch/arm/mach-tegra/timer.c @@ -27,9 +27,9 @@ #include #include #include +#include #include -#include #include #include @@ -179,6 +179,30 @@ static struct irqaction tegra_timer_irq = { .irq = INT_TMR3, }; +static struct resource tegra_twd_resources[] = { + { + .start = TEGRA_ARM_PERIF_BASE + 0x600, + .end = TEGRA_ARM_PERIF_BASE + 0x600 + 0x10, + .flags = IORESOURCE_MEM, + }, + { + .start = IRQ_LOCALTIMER, + .end = IRQ_LOCALTIMER, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device tegra_twd_device = { + .name = "arm_smp_twd", + .id = -1, + .resource = tegra_twd_resources, + .num_resources = ARRAY_SIZE(tegra_twd_resources), +}; + +static struct platform_device *tegra_early_devices[] = { + &tegra_twd_device, +}; + static void __init tegra_init_timer(void) { struct clk *clk; @@ -197,10 +221,6 @@ static void __init tegra_init_timer(void) BUG_ON(IS_ERR(clk)); clk_enable(clk); -#ifdef CONFIG_HAVE_ARM_TWD - twd_base = IO_ADDRESS(TEGRA_ARM_PERIF_BASE + 0x600); -#endif - switch (rate) { case 12000000: timer_writel(0x000b, TIMERUS_USEC_CFG); @@ -241,6 +261,8 @@ static void __init tegra_init_timer(void) tegra_clockevent.cpumask = cpu_all_mask; tegra_clockevent.irq = tegra_timer_irq.irq; clockevents_register_device(&tegra_clockevent); + early_platform_add_devices(tegra_early_devices, + ARRAY_SIZE(tegra_early_devices)); } struct sys_timer tegra_timer = { -- 1.7.0.4