[POWERPC] pseries: Enabling auto poweron after power is restored. (5d30bf30) · Commits · e / devices / android_kernel_oneplus_sm8150

arch/powerpc/platforms/pseries/Makefile

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -4,7 +4,7 @@ endif

	obj-y := pci.o lpar.o hvCall.o nvram.o reconfig.o \		obj-y := pci.o lpar.o hvCall.o nvram.o reconfig.o \
	setup.o iommu.o ras.o rtasd.o pci_dlpar.o \		setup.o iommu.o ras.o rtasd.o pci_dlpar.o \
	firmware.o		firmware.o power.o
	obj-$(CONFIG_SMP) += smp.o		obj-$(CONFIG_SMP) += smp.o
	obj-$(CONFIG_XICS) += xics.o		obj-$(CONFIG_XICS) += xics.o
	obj-$(CONFIG_SCANLOG) += scanlog.o		obj-$(CONFIG_SCANLOG) += scanlog.o

arch/powerpc/platforms/pseries/power.c

0 → 100644

+87 −0

Original line number	Original line	Diff line number	Diff line
			/*
			* Interface for power-management for ppc64 compliant platform
			*
			* Manish Ahuja <mahuja@us.ibm.com>
			*
			* Feb 2007
			*
			* Copyright (C) 2007 IBM Corporation.
			*
			* 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; version 2 of the License.
			*
			* 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 <linux/kobject.h>
			#include <linux/string.h>
			#include <linux/errno.h>
			#include <linux/init.h>

			unsigned long rtas_poweron_auto; /* default and normal state is 0 */

			static ssize_t auto_poweron_show(struct subsystem subsys, char buf)
			{
			return sprintf(buf, "%lu\n", rtas_poweron_auto);
			}

			static ssize_t
			auto_poweron_store(struct subsystem subsys, const char buf, size_t n)
			{
			int ret;
			unsigned long ups_restart;
			ret = sscanf(buf, "%lu", &ups_restart);

			if ((ret == 1) && ((ups_restart == 1) \|\| (ups_restart == 0))){
			rtas_poweron_auto = ups_restart;
			return n;
			}
			return -EINVAL;
			}

			static struct subsys_attribute auto_poweron_attr = {
			.attr = {
			.name = __stringify(auto_poweron),
			.mode = 0644,
			},
			.show = auto_poweron_show,
			.store = auto_poweron_store,
			};

			#ifndef CONFIG_PM
			decl_subsys(power,NULL,NULL);

			static struct attribute *g[] = {
			&auto_poweron_attr.attr,
			NULL,
			};

			static struct attribute_group attr_group = {
			.attrs = g,
			};

			static int __init pm_init(void)
			{
			int error = subsystem_register(&power_subsys);
			if (!error)
			error = sysfs_create_group(&power_subsys.kset.kobj,&attr_group);
			return error;
			}
			core_initcall(pm_init);
			#else
			extern struct subsystem power_subsys;

			static int __init apo_pm_init(void)
			{
			return (subsys_create_file(&power_subsys, &auto_poweron_attr));
			}
			__initcall(apo_pm_init);
			#endif

arch/powerpc/platforms/pseries/pseries.h

+3 −0

Original line number	Original line	Diff line number	Diff line
	@@ -33,4 +33,7 @@ static inline void setup_kexec_cpu_down_xics(void) { }
	static inline void setup_kexec_cpu_down_mpic(void) { }		static inline void setup_kexec_cpu_down_mpic(void) { }
	#endif		#endif

			/* Poweron flag used for enabling auto ups restart */
			extern unsigned long rtas_poweron_auto;

	#endif /* _PSERIES_PSERIES_H */		#endif /* _PSERIES_PSERIES_H */

arch/powerpc/platforms/pseries/setup.c

+29 −1

Original line number	Original line	Diff line number	Diff line
	@@ -486,6 +486,34 @@ static int pSeries_pci_probe_mode(struct pci_bus *bus)
	return PCI_PROBE_NORMAL;		return PCI_PROBE_NORMAL;
	}		}

			/**
			* pSeries_power_off - tell firmware about how to power off the system.
			*
			* This function calls either the power-off rtas token in normal cases
			* or the ibm,power-off-ups token (if present & requested) in case of
			* a power failure. If power-off token is used, power on will only be
			* possible with power button press. If ibm,power-off-ups token is used
			* it will allow auto poweron after power is restored.
			*/
			void pSeries_power_off(void)
			{
			int rc;
			int rtas_poweroff_ups_token = rtas_token("ibm,power-off-ups");

			if (rtas_flash_term_hook)
			rtas_flash_term_hook(SYS_POWER_OFF);

			if (rtas_poweron_auto == 0 \|\|
			rtas_poweroff_ups_token == RTAS_UNKNOWN_SERVICE) {
			rc = rtas_call(rtas_token("power-off"), 2, 1, NULL, -1, -1);
			printk(KERN_INFO "RTAS power-off returned %d\n", rc);
			} else {
			rc = rtas_call(rtas_poweroff_ups_token, 0, 1, NULL);
			printk(KERN_INFO "RTAS ibm,power-off-ups returned %d\n", rc);
			}
			for (;;);
			}

	define_machine(pseries) {		define_machine(pseries) {
	.name = "pSeries",		.name = "pSeries",
	.probe = pSeries_probe,		.probe = pSeries_probe,
	@@ -496,7 +524,7 @@ define_machine(pseries) {
	.pcibios_fixup = pSeries_final_fixup,		.pcibios_fixup = pSeries_final_fixup,
	.pci_probe_mode = pSeries_pci_probe_mode,		.pci_probe_mode = pSeries_pci_probe_mode,
	.restart = rtas_restart,		.restart = rtas_restart,
	.power_off = rtas_power_off,		.power_off = pSeries_power_off,
	.halt = rtas_halt,		.halt = rtas_halt,
	.panic = rtas_os_term,		.panic = rtas_os_term,
	.get_boot_time = rtas_get_boot_time,		.get_boot_time = rtas_get_boot_time,