diff options
Diffstat (limited to 'arch/arm/mach-vexpress')
| -rw-r--r-- | arch/arm/mach-vexpress/Kconfig | 5 | ||||
| -rw-r--r-- | arch/arm/mach-vexpress/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/mach-vexpress/reset.c | 141 | ||||
| -rw-r--r-- | arch/arm/mach-vexpress/v2m.c | 19 |
4 files changed, 16 insertions, 151 deletions
diff --git a/arch/arm/mach-vexpress/Kconfig b/arch/arm/mach-vexpress/Kconfig index 52d315b792c8..5907e10c37fd 100644 --- a/arch/arm/mach-vexpress/Kconfig +++ b/arch/arm/mach-vexpress/Kconfig @@ -9,6 +9,8 @@ config ARCH_VEXPRESS select COMMON_CLK_VERSATILE select CPU_V7 select GENERIC_CLOCKEVENTS + select HAVE_ARM_SCU if SMP + select HAVE_ARM_TWD if LOCAL_TIMERS select HAVE_CLK select HAVE_PATA_PLATFORM select HAVE_SMP @@ -17,6 +19,9 @@ config ARCH_VEXPRESS select NO_IOPORT select PLAT_VERSATILE select PLAT_VERSATILE_CLCD + select POWER_RESET + select POWER_RESET_VEXPRESS + select POWER_SUPPLY select REGULATOR_FIXED_VOLTAGE if REGULATOR select VEXPRESS_CONFIG help diff --git a/arch/arm/mach-vexpress/Makefile b/arch/arm/mach-vexpress/Makefile index 80b64971fbdd..42703e8b4d3b 100644 --- a/arch/arm/mach-vexpress/Makefile +++ b/arch/arm/mach-vexpress/Makefile @@ -4,7 +4,7 @@ ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include \ -I$(srctree)/arch/arm/plat-versatile/include -obj-y := v2m.o reset.o +obj-y := v2m.o obj-$(CONFIG_ARCH_VEXPRESS_CA9X4) += ct-ca9x4.o obj-$(CONFIG_SMP) += platsmp.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o diff --git a/arch/arm/mach-vexpress/reset.c b/arch/arm/mach-vexpress/reset.c deleted file mode 100644 index 465923aa3819..000000000000 --- a/arch/arm/mach-vexpress/reset.c +++ /dev/null @@ -1,141 +0,0 @@ -/* - * 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. - * - * Copyright (C) 2012 ARM Limited - */ - -#include <linux/jiffies.h> -#include <linux/of.h> -#include <linux/of_device.h> -#include <linux/platform_device.h> -#include <linux/stat.h> -#include <linux/vexpress.h> - -static void vexpress_reset_do(struct device *dev, const char *what) -{ - int err = -ENOENT; - struct vexpress_config_func *func = - vexpress_config_func_get_by_dev(dev); - - if (func) { - unsigned long timeout; - - err = vexpress_config_write(func, 0, 0); - - timeout = jiffies + HZ; - while (time_before(jiffies, timeout)) - cpu_relax(); - } - - dev_emerg(dev, "Unable to %s (%d)\n", what, err); -} - -static struct device *vexpress_power_off_device; - -void vexpress_power_off(void) -{ - vexpress_reset_do(vexpress_power_off_device, "power off"); -} - -static struct device *vexpress_restart_device; - -void vexpress_restart(char str, const char *cmd) -{ - vexpress_reset_do(vexpress_restart_device, "restart"); -} - -static ssize_t vexpress_reset_active_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - return sprintf(buf, "%d\n", vexpress_restart_device == dev); -} - -static ssize_t vexpress_reset_active_store(struct device *dev, - struct device_attribute *attr, const char *buf, size_t count) -{ - long value; - int err = kstrtol(buf, 0, &value); - - if (!err && value) - vexpress_restart_device = dev; - - return err ? err : count; -} - -DEVICE_ATTR(active, S_IRUGO | S_IWUSR, vexpress_reset_active_show, - vexpress_reset_active_store); - - -enum vexpress_reset_func { FUNC_RESET, FUNC_SHUTDOWN, FUNC_REBOOT }; - -static struct of_device_id vexpress_reset_of_match[] = { - { - .compatible = "arm,vexpress-reset", - .data = (void *)FUNC_RESET, - }, { - .compatible = "arm,vexpress-shutdown", - .data = (void *)FUNC_SHUTDOWN - }, { - .compatible = "arm,vexpress-reboot", - .data = (void *)FUNC_REBOOT - }, - {} -}; - -static int vexpress_reset_probe(struct platform_device *pdev) -{ - enum vexpress_reset_func func; - const struct of_device_id *match = - of_match_device(vexpress_reset_of_match, &pdev->dev); - - if (match) - func = (enum vexpress_reset_func)match->data; - else - func = pdev->id_entry->driver_data; - - switch (func) { - case FUNC_SHUTDOWN: - vexpress_power_off_device = &pdev->dev; - break; - case FUNC_RESET: - if (!vexpress_restart_device) - vexpress_restart_device = &pdev->dev; - device_create_file(&pdev->dev, &dev_attr_active); - break; - case FUNC_REBOOT: - vexpress_restart_device = &pdev->dev; - device_create_file(&pdev->dev, &dev_attr_active); - break; - }; - - return 0; -} - -static const struct platform_device_id vexpress_reset_id_table[] = { - { .name = "vexpress-reset", .driver_data = FUNC_RESET, }, - { .name = "vexpress-shutdown", .driver_data = FUNC_SHUTDOWN, }, - { .name = "vexpress-reboot", .driver_data = FUNC_REBOOT, }, - {} -}; - -static struct platform_driver vexpress_reset_driver = { - .probe = vexpress_reset_probe, - .driver = { - .name = "vexpress-reset", - .of_match_table = vexpress_reset_of_match, - }, - .id_table = vexpress_reset_id_table, -}; - -static int __init vexpress_reset_init(void) -{ - return platform_driver_register(&vexpress_reset_driver); -} -device_initcall(vexpress_reset_init); diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c index 915683cb67d6..9366f37902d9 100644 --- a/arch/arm/mach-vexpress/v2m.c +++ b/arch/arm/mach-vexpress/v2m.c @@ -5,6 +5,7 @@ #include <linux/amba/bus.h> #include <linux/amba/mmci.h> #include <linux/io.h> +#include <linux/clocksource.h> #include <linux/smp.h> #include <linux/init.h> #include <linux/irqchip.h> @@ -21,11 +22,12 @@ #include <linux/regulator/fixed.h> #include <linux/regulator/machine.h> #include <linux/vexpress.h> +#include <linux/clk-provider.h> +#include <linux/clkdev.h> #include <asm/arch_timer.h> #include <asm/mach-types.h> #include <asm/sizes.h> -#include <asm/smp_twd.h> #include <asm/mach/arch.h> #include <asm/mach/map.h> #include <asm/mach/time.h> @@ -361,8 +363,6 @@ static void __init v2m_init(void) for (i = 0; i < ARRAY_SIZE(v2m_amba_devs); i++) amba_device_register(v2m_amba_devs[i], &iomem_resource); - pm_power_off = vexpress_power_off; - ct_desc->init_tile(); } @@ -374,7 +374,6 @@ MACHINE_START(VEXPRESS, "ARM-Versatile Express") .init_irq = v2m_init_irq, .init_time = v2m_timer_init, .init_machine = v2m_init, - .restart = vexpress_restart, MACHINE_END static struct map_desc v2m_rs1_io_desc __initdata = { @@ -433,20 +432,24 @@ static void __init v2m_dt_timer_init(void) { struct device_node *node = NULL; - vexpress_clk_of_init(); + of_clk_init(NULL); + clocksource_of_init(); do { node = of_find_compatible_node(node, NULL, "arm,sp804"); } while (node && vexpress_get_site_by_node(node) != VEXPRESS_SITE_MB); if (node) { pr_info("Using SP804 '%s' as a clock & events source\n", node->full_name); + WARN_ON(clk_register_clkdev(of_clk_get_by_name(node, + "timclken1"), "v2m-timer0", "sp804")); + WARN_ON(clk_register_clkdev(of_clk_get_by_name(node, + "timclken2"), "v2m-timer1", "sp804")); v2m_sp804_init(of_iomap(node, 0), irq_of_parse_and_map(node, 0)); } - if (arch_timer_of_register() != 0) - twd_local_timer_of_register(); + arch_timer_of_register(); if (arch_timer_sched_clock_init() != 0) versatile_sched_clock_init(vexpress_get_24mhz_clock_base(), @@ -464,7 +467,6 @@ static void __init v2m_dt_init(void) { l2x0_of_init(0x00400000, 0xfe0fffff); of_platform_populate(NULL, v2m_dt_bus_match, NULL, NULL); - pm_power_off = vexpress_power_off; } static const char * const v2m_dt_match[] __initconst = { @@ -481,5 +483,4 @@ DT_MACHINE_START(VEXPRESS_DT, "ARM-Versatile Express") .init_irq = irqchip_init, .init_time = v2m_dt_timer_init, .init_machine = v2m_dt_init, - .restart = vexpress_restart, MACHINE_END |