From 86cc0ef8abd25fab2c7c6a6a57faf5cd8503a15b Mon Sep 17 00:00:00 2001 From: Tony Prisk Date: Thu, 19 Jul 2012 03:42:19 +1200 Subject: ARM:vt8500: Convert to use .restart and remove arch_reset() Removed system.h as it only contained an inline for arch_reset() Changed the existing board files to use .restart in there machine descriptions. Added device tree support for the restart controller. Device tree support for mach-vt8500 is still a work-in-progress. Signed-off-by: Tony Prisk Signed-off-by: Arnd Bergmann --- arch/arm/mach-vt8500/Makefile | 2 +- arch/arm/mach-vt8500/bv07.c | 3 ++ arch/arm/mach-vt8500/include/mach/restart.h | 17 +++++++++ arch/arm/mach-vt8500/include/mach/system.h | 13 ------- arch/arm/mach-vt8500/restart.c | 54 +++++++++++++++++++++++++++++ arch/arm/mach-vt8500/wm8505_7in.c | 4 ++- 6 files changed, 78 insertions(+), 15 deletions(-) create mode 100644 arch/arm/mach-vt8500/include/mach/restart.h delete mode 100644 arch/arm/mach-vt8500/include/mach/system.h create mode 100644 arch/arm/mach-vt8500/restart.c (limited to 'arch/arm/mach-vt8500') diff --git a/arch/arm/mach-vt8500/Makefile b/arch/arm/mach-vt8500/Makefile index 81aedb7c893..54e69973f39 100644 --- a/arch/arm/mach-vt8500/Makefile +++ b/arch/arm/mach-vt8500/Makefile @@ -1,4 +1,4 @@ -obj-y += devices.o gpio.o irq.o timer.o +obj-y += devices.o gpio.o irq.o timer.o restart.o obj-$(CONFIG_VTWM_VERSION_VT8500) += devices-vt8500.o obj-$(CONFIG_VTWM_VERSION_WM8505) += devices-wm8505.o diff --git a/arch/arm/mach-vt8500/bv07.c b/arch/arm/mach-vt8500/bv07.c index a464c758441..f9fbeb2d10e 100644 --- a/arch/arm/mach-vt8500/bv07.c +++ b/arch/arm/mach-vt8500/bv07.c @@ -23,6 +23,7 @@ #include #include +#include #include "devices.h" @@ -62,6 +63,7 @@ void __init bv07_init(void) else printk(KERN_ERR "PMC Hibernation register could not be remapped, not enabling power off!\n"); + wmt_setup_restart(); vt8500_set_resources(); platform_add_devices(devices, ARRAY_SIZE(devices)); vt8500_gpio_init(); @@ -69,6 +71,7 @@ void __init bv07_init(void) MACHINE_START(BV07, "Benign BV07 Mini Netbook") .atag_offset = 0x100, + .restart = wmt_restart, .reserve = vt8500_reserve_mem, .map_io = vt8500_map_io, .init_irq = vt8500_init_irq, diff --git a/arch/arm/mach-vt8500/include/mach/restart.h b/arch/arm/mach-vt8500/include/mach/restart.h new file mode 100644 index 00000000000..89f9b787d2a --- /dev/null +++ b/arch/arm/mach-vt8500/include/mach/restart.h @@ -0,0 +1,17 @@ +/* linux/arch/arm/mach-vt8500/restart.h + * + * Copyright (C) 2012 Tony Prisk + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * 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. + * + */ + +void wmt_setup_restart(void); +void wmt_restart(char mode, const char *cmd); diff --git a/arch/arm/mach-vt8500/include/mach/system.h b/arch/arm/mach-vt8500/include/mach/system.h deleted file mode 100644 index 58fa8010ee6..00000000000 --- a/arch/arm/mach-vt8500/include/mach/system.h +++ /dev/null @@ -1,13 +0,0 @@ -/* - * arch/arm/mach-vt8500/include/mach/system.h - * - */ -#include - -/* PM Software Reset request register */ -#define VT8500_PMSR_VIRT 0xf8130060 - -static inline void arch_reset(char mode, const char *cmd) -{ - writel(1, VT8500_PMSR_VIRT); -} diff --git a/arch/arm/mach-vt8500/restart.c b/arch/arm/mach-vt8500/restart.c new file mode 100644 index 00000000000..497e89a5e13 --- /dev/null +++ b/arch/arm/mach-vt8500/restart.c @@ -0,0 +1,54 @@ +/* linux/arch/arm/mach-vt8500/restart.c + * + * Copyright (C) 2012 Tony Prisk + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * 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. + * + */ +#include +#include +#include + +#define LEGACY_PMC_BASE 0xD8130000 +#define WMT_PRIZM_PMSR_REG 0x60 + +static void __iomem *pmc_base; + +void wmt_setup_restart(void) +{ + struct device_node *np; + + /* + * Check if Power Mgmt Controller node is present in device tree. If no + * device tree node, use the legacy PMSR value (valid for all current + * SoCs). + */ + np = of_find_compatible_node(NULL, NULL, "wmt,prizm-pmc"); + if (np) { + pmc_base = of_iomap(np, 0); + + if (!pmc_base) + pr_err("%s:of_iomap(pmc) failed\n", __func__); + + of_node_put(np); + } else { + pmc_base = ioremap(LEGACY_PMC_BASE, 0x1000); + if (!pmc_base) { + pr_err("%s:ioremap(rstc) failed\n", __func__); + return; + } + } +} + +void wmt_restart(char mode, const char *cmd) +{ + if (pmc_base) + writel(1, pmc_base + WMT_PRIZM_PMSR_REG); +} diff --git a/arch/arm/mach-vt8500/wm8505_7in.c b/arch/arm/mach-vt8500/wm8505_7in.c index cf910a95608..db19886caf7 100644 --- a/arch/arm/mach-vt8500/wm8505_7in.c +++ b/arch/arm/mach-vt8500/wm8505_7in.c @@ -23,6 +23,7 @@ #include #include +#include #include "devices.h" @@ -61,7 +62,7 @@ void __init wm8505_7in_init(void) pm_power_off = &vt8500_power_off; else printk(KERN_ERR "PMC Hibernation register could not be remapped, not enabling power off!\n"); - + wmt_setup_restart(); wm8505_set_resources(); platform_add_devices(devices, ARRAY_SIZE(devices)); vt8500_gpio_init(); @@ -69,6 +70,7 @@ void __init wm8505_7in_init(void) MACHINE_START(WM8505_7IN_NETBOOK, "WM8505 7-inch generic netbook") .atag_offset = 0x100, + .restart = wmt_restart, .reserve = wm8505_reserve_mem, .map_io = wm8505_map_io, .init_irq = wm8505_init_irq, -- cgit v1.2.3