From 4c62dbbce902cf2afa88cac89ec67c828160f431 Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Fri, 26 Jun 2015 11:27:41 +0300 Subject: ACPI: Remove FSF mailing addresses There is no need to carry potentially outdated Free Software Foundation mailing address in file headers since the COPYING file includes it. Signed-off-by: Jarkko Nikula Signed-off-by: Rafael J. Wysocki diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c index 9b5354a..f71b756 100644 --- a/drivers/acpi/ac.c +++ b/drivers/acpi/ac.c @@ -16,10 +16,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/drivers/acpi/acpi_ipmi.c b/drivers/acpi/acpi_ipmi.c index ac0f52f..f77956c 100644 --- a/drivers/acpi/acpi_ipmi.c +++ b/drivers/acpi/acpi_ipmi.c @@ -17,10 +17,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c index ee28f4d..6b0d3ef 100644 --- a/drivers/acpi/acpi_memhotplug.c +++ b/drivers/acpi/acpi_memhotplug.c @@ -16,11 +16,6 @@ * NON INFRINGEMENT. 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., 675 Mass Ave, Cambridge, MA 02139, USA. - * - * * ACPI based HotPlug driver that supports Memory Hotplug * This driver fields notifications from firmware for memory add * and remove operations and alerts the VM of the affected memory diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c index 00b3980..ae307ff 100644 --- a/drivers/acpi/acpi_pad.c +++ b/drivers/acpi/acpi_pad.c @@ -12,10 +12,6 @@ * 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., - * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - * */ #include diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c index 8c2fe2f..5778e8e 100644 --- a/drivers/acpi/acpi_video.c +++ b/drivers/acpi/acpi_video.c @@ -17,10 +17,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/drivers/acpi/apei/apei-base.c b/drivers/acpi/apei/apei-base.c index a85ac07..a2c8d7a 100644 --- a/drivers/acpi/apei/apei-base.c +++ b/drivers/acpi/apei/apei-base.c @@ -24,10 +24,6 @@ * 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 diff --git a/drivers/acpi/apei/einj.c b/drivers/acpi/apei/einj.c index a095d4f..0431883 100644 --- a/drivers/acpi/apei/einj.c +++ b/drivers/acpi/apei/einj.c @@ -18,10 +18,6 @@ * 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 diff --git a/drivers/acpi/apei/erst-dbg.c b/drivers/acpi/apei/erst-dbg.c index 04ab5c9..6330f55 100644 --- a/drivers/acpi/apei/erst-dbg.c +++ b/drivers/acpi/apei/erst-dbg.c @@ -17,10 +17,6 @@ * 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 diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c index 3670bba..6682c5d 100644 --- a/drivers/acpi/apei/erst.c +++ b/drivers/acpi/apei/erst.c @@ -18,10 +18,6 @@ * 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 diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index 2bfd53c..23981ac 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -23,10 +23,6 @@ * 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 diff --git a/drivers/acpi/apei/hest.c b/drivers/acpi/apei/hest.c index 06e9b41..20b3fcf 100644 --- a/drivers/acpi/apei/hest.c +++ b/drivers/acpi/apei/hest.c @@ -21,10 +21,6 @@ * 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 diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index b3628cc..b719ab3 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -18,10 +18,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c index 278dc4b..96809cd 100644 --- a/drivers/acpi/blacklist.c +++ b/drivers/acpi/blacklist.c @@ -20,10 +20,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 513e7230e..c8356eb 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -15,10 +15,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c index 6d5d183..5c3b091 100644 --- a/drivers/acpi/button.c +++ b/drivers/acpi/button.c @@ -16,10 +16,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/drivers/acpi/cm_sbs.c b/drivers/acpi/cm_sbs.c index 6c9ee68..d0918d4 100644 --- a/drivers/acpi/cm_sbs.c +++ b/drivers/acpi/cm_sbs.c @@ -11,10 +11,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/drivers/acpi/container.c b/drivers/acpi/container.c index c8ead9f..12c2409 100644 --- a/drivers/acpi/container.c +++ b/drivers/acpi/container.c @@ -20,10 +20,6 @@ * 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 diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c index 717afcd..d06cd59 100644 --- a/drivers/acpi/device_pm.c +++ b/drivers/acpi/device_pm.c @@ -15,10 +15,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index a688aa2..e8e128d 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -17,10 +17,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 9d4761d..9904466 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -22,10 +22,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c index bea0bba..e297a48 100644 --- a/drivers/acpi/fan.c +++ b/drivers/acpi/fan.c @@ -16,10 +16,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/drivers/acpi/hed.c b/drivers/acpi/hed.c index a322710..5c67a6d 100644 --- a/drivers/acpi/hed.c +++ b/drivers/acpi/hed.c @@ -15,10 +15,6 @@ * 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 diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index 4683a96..8c71cb8 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -13,9 +13,6 @@ * 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., - * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. */ #ifndef _ACPI_INTERNAL_H_ diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c index acaa3b4..72b6e9e 100644 --- a/drivers/acpi/numa.c +++ b/drivers/acpi/numa.c @@ -15,10 +15,6 @@ * 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 - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * */ diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index c262e4a..5e1f1bc 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -19,10 +19,6 @@ * 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 - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * */ diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c index 304eccb..25fff35 100644 --- a/drivers/acpi/pci_irq.c +++ b/drivers/acpi/pci_irq.c @@ -19,10 +19,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c index cfd7581..2f5f84c 100644 --- a/drivers/acpi/pci_link.c +++ b/drivers/acpi/pci_link.c @@ -17,10 +17,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * TBD: diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 1b5569c..393706a 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -16,10 +16,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/drivers/acpi/pci_slot.c b/drivers/acpi/pci_slot.c index 139d9e4..7188e53 100644 --- a/drivers/acpi/pci_slot.c +++ b/drivers/acpi/pci_slot.c @@ -20,10 +20,6 @@ * 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., - * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. */ #include diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c index 93eac53..45b47f2 100644 --- a/drivers/acpi/power.c +++ b/drivers/acpi/power.c @@ -16,10 +16,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c index d9f7158..3af8dc3 100644 --- a/drivers/acpi/processor_driver.c +++ b/drivers/acpi/processor_driver.c @@ -21,10 +21,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index d540f42..175c86b 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -21,10 +21,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c index cfc8aba..53cfe8b 100644 --- a/drivers/acpi/processor_perflib.c +++ b/drivers/acpi/processor_perflib.c @@ -20,10 +20,6 @@ * 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 diff --git a/drivers/acpi/processor_thermal.c b/drivers/acpi/processor_thermal.c index e003663..1fed84a 100644 --- a/drivers/acpi/processor_thermal.c +++ b/drivers/acpi/processor_thermal.c @@ -19,10 +19,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c index 84243c3..f170d74 100644 --- a/drivers/acpi/processor_throttling.c +++ b/drivers/acpi/processor_throttling.c @@ -19,10 +19,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c index 10561ce..64ea0d1 100644 --- a/drivers/acpi/resource.c +++ b/drivers/acpi/resource.c @@ -15,10 +15,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c index 01504c8..cb3dedb 100644 --- a/drivers/acpi/sbs.c +++ b/drivers/acpi/sbs.c @@ -17,10 +17,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c index 2e19189..17a6fa0 100644 --- a/drivers/acpi/tables.c +++ b/drivers/acpi/tables.c @@ -15,10 +15,6 @@ * 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 - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * */ diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index 6d4e44e..fc28b9f 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -16,10 +16,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This driver fully implements the ACPI thermal policy as described in the diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index 67c548a..475c907 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -16,10 +16,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 83061ca..5ba8fb6 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -16,10 +16,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/include/acpi/acpi_drivers.h b/include/acpi/acpi_drivers.h index ea6428b..29c6912 100644 --- a/include/acpi/acpi_drivers.h +++ b/include/acpi/acpi_drivers.h @@ -16,10 +16,6 @@ * 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. - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ diff --git a/include/linux/acpi.h b/include/linux/acpi.h index c471dfc..1c116ee 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -15,10 +15,6 @@ * 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 - * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ -- cgit v0.10.2 From c2efefb33abfb245395199137ece3c1e3df47f51 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 17 Jul 2015 22:53:43 +0200 Subject: ACPI / scan: Move sysfs-related device code to a separate file To reduce the size of scan.c and improve the readability of it, move all code related to device sysfs, modalias creation etc. to a new file called device_sysfs.c. Signed-off-by: Rafael J. Wysocki diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index 8321430..08ac110 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -24,7 +24,7 @@ acpi-y += nvs.o # Power management related files acpi-y += wakeup.o acpi-$(CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT) += sleep.o -acpi-y += device_pm.o +acpi-y += device_sysfs.o device_pm.o acpi-$(CONFIG_ACPI_SLEEP) += proc.o diff --git a/drivers/acpi/device_sysfs.c b/drivers/acpi/device_sysfs.c new file mode 100644 index 0000000..4ab4582 --- /dev/null +++ b/drivers/acpi/device_sysfs.c @@ -0,0 +1,521 @@ +/* + * drivers/acpi/device_sysfs.c - ACPI device sysfs attributes and modalias. + * + * Copyright (C) 2015, Intel Corp. + * Author: Mika Westerberg + * Author: Rafael J. Wysocki + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * 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. + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ + +#include +#include +#include +#include + +#include "internal.h" + +/** + * create_pnp_modalias - Create hid/cid(s) string for modalias and uevent + * @acpi_dev: ACPI device object. + * @modalias: Buffer to print into. + * @size: Size of the buffer. + * + * Creates hid/cid(s) string needed for modalias and uevent + * e.g. on a device with hid:IBM0001 and cid:ACPI0001 you get: + * char *modalias: "acpi:IBM0001:ACPI0001" + * Return: 0: no _HID and no _CID + * -EINVAL: output error + * -ENOMEM: output is truncated +*/ +static int create_pnp_modalias(struct acpi_device *acpi_dev, char *modalias, + int size) +{ + int len; + int count; + struct acpi_hardware_id *id; + + /* + * Since we skip ACPI_DT_NAMESPACE_HID from the modalias below, 0 should + * be returned if ACPI_DT_NAMESPACE_HID is the only ACPI/PNP ID in the + * device's list. + */ + count = 0; + list_for_each_entry(id, &acpi_dev->pnp.ids, list) + if (strcmp(id->id, ACPI_DT_NAMESPACE_HID)) + count++; + + if (!count) + return 0; + + len = snprintf(modalias, size, "acpi:"); + if (len <= 0) + return len; + + size -= len; + + list_for_each_entry(id, &acpi_dev->pnp.ids, list) { + if (!strcmp(id->id, ACPI_DT_NAMESPACE_HID)) + continue; + + count = snprintf(&modalias[len], size, "%s:", id->id); + if (count < 0) + return -EINVAL; + + if (count >= size) + return -ENOMEM; + + len += count; + size -= count; + } + modalias[len] = '\0'; + return len; +} + +/** + * create_of_modalias - Creates DT compatible string for modalias and uevent + * @acpi_dev: ACPI device object. + * @modalias: Buffer to print into. + * @size: Size of the buffer. + * + * Expose DT compatible modalias as of:NnameTCcompatible. This function should + * only be called for devices having ACPI_DT_NAMESPACE_HID in their list of + * ACPI/PNP IDs. + */ +static int create_of_modalias(struct acpi_device *acpi_dev, char *modalias, + int size) +{ + struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER }; + const union acpi_object *of_compatible, *obj; + int len, count; + int i, nval; + char *c; + + acpi_get_name(acpi_dev->handle, ACPI_SINGLE_NAME, &buf); + /* DT strings are all in lower case */ + for (c = buf.pointer; *c != '\0'; c++) + *c = tolower(*c); + + len = snprintf(modalias, size, "of:N%sT", (char *)buf.pointer); + ACPI_FREE(buf.pointer); + + if (len <= 0) + return len; + + of_compatible = acpi_dev->data.of_compatible; + if (of_compatible->type == ACPI_TYPE_PACKAGE) { + nval = of_compatible->package.count; + obj = of_compatible->package.elements; + } else { /* Must be ACPI_TYPE_STRING. */ + nval = 1; + obj = of_compatible; + } + for (i = 0; i < nval; i++, obj++) { + count = snprintf(&modalias[len], size, "C%s", + obj->string.pointer); + if (count < 0) + return -EINVAL; + + if (count >= size) + return -ENOMEM; + + len += count; + size -= count; + } + modalias[len] = '\0'; + return len; +} + +int __acpi_device_uevent_modalias(struct acpi_device *adev, + struct kobj_uevent_env *env) +{ + int len; + + if (!adev) + return -ENODEV; + + if (list_empty(&adev->pnp.ids)) + return 0; + + if (add_uevent_var(env, "MODALIAS=")) + return -ENOMEM; + + len = create_pnp_modalias(adev, &env->buf[env->buflen - 1], + sizeof(env->buf) - env->buflen); + if (len < 0) + return len; + + env->buflen += len; + if (!adev->data.of_compatible) + return 0; + + if (len > 0 && add_uevent_var(env, "MODALIAS=")) + return -ENOMEM; + + len = create_of_modalias(adev, &env->buf[env->buflen - 1], + sizeof(env->buf) - env->buflen); + if (len < 0) + return len; + + env->buflen += len; + + return 0; +} + +/** + * acpi_device_uevent_modalias - uevent modalias for ACPI-enumerated devices. + * + * Create the uevent modalias field for ACPI-enumerated devices. + * + * Because other buses do not support ACPI HIDs & CIDs, e.g. for a device with + * hid:IBM0001 and cid:ACPI0001 you get: "acpi:IBM0001:ACPI0001". + */ +int acpi_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env) +{ + return __acpi_device_uevent_modalias(acpi_companion_match(dev), env); +} +EXPORT_SYMBOL_GPL(acpi_device_uevent_modalias); + +static int __acpi_device_modalias(struct acpi_device *adev, char *buf, int size) +{ + int len, count; + + if (!adev) + return -ENODEV; + + if (list_empty(&adev->pnp.ids)) + return 0; + + len = create_pnp_modalias(adev, buf, size - 1); + if (len < 0) { + return len; + } else if (len > 0) { + buf[len++] = '\n'; + size -= len; + } + if (!adev->data.of_compatible) + return len; + + count = create_of_modalias(adev, buf + len, size - 1); + if (count < 0) { + return count; + } else if (count > 0) { + len += count; + buf[len++] = '\n'; + } + + return len; +} + +/** + * acpi_device_modalias - modalias sysfs attribute for ACPI-enumerated devices. + * + * Create the modalias sysfs attribute for ACPI-enumerated devices. + * + * Because other buses do not support ACPI HIDs & CIDs, e.g. for a device with + * hid:IBM0001 and cid:ACPI0001 you get: "acpi:IBM0001:ACPI0001". + */ +int acpi_device_modalias(struct device *dev, char *buf, int size) +{ + return __acpi_device_modalias(acpi_companion_match(dev), buf, size); +} +EXPORT_SYMBOL_GPL(acpi_device_modalias); + +static ssize_t +acpi_device_modalias_show(struct device *dev, struct device_attribute *attr, char *buf) { + return __acpi_device_modalias(to_acpi_device(dev), buf, 1024); +} +static DEVICE_ATTR(modalias, 0444, acpi_device_modalias_show, NULL); + +static ssize_t real_power_state_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct acpi_device *adev = to_acpi_device(dev); + int state; + int ret; + + ret = acpi_device_get_power(adev, &state); + if (ret) + return ret; + + return sprintf(buf, "%s\n", acpi_power_state_string(state)); +} + +static DEVICE_ATTR(real_power_state, 0444, real_power_state_show, NULL); + +static ssize_t power_state_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct acpi_device *adev = to_acpi_device(dev); + + return sprintf(buf, "%s\n", acpi_power_state_string(adev->power.state)); +} + +static DEVICE_ATTR(power_state, 0444, power_state_show, NULL); + +static ssize_t +acpi_eject_store(struct device *d, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct acpi_device *acpi_device = to_acpi_device(d); + acpi_object_type not_used; + acpi_status status; + + if (!count || buf[0] != '1') + return -EINVAL; + + if ((!acpi_device->handler || !acpi_device->handler->hotplug.enabled) + && !acpi_device->driver) + return -ENODEV; + + status = acpi_get_type(acpi_device->handle, ¬_used); + if (ACPI_FAILURE(status) || !acpi_device->flags.ejectable) + return -ENODEV; + + get_device(&acpi_device->dev); + status = acpi_hotplug_schedule(acpi_device, ACPI_OST_EC_OSPM_EJECT); + if (ACPI_SUCCESS(status)) + return count; + + put_device(&acpi_device->dev); + acpi_evaluate_ost(acpi_device->handle, ACPI_OST_EC_OSPM_EJECT, + ACPI_OST_SC_NON_SPECIFIC_FAILURE, NULL); + return status == AE_NO_MEMORY ? -ENOMEM : -EAGAIN; +} + +static DEVICE_ATTR(eject, 0200, NULL, acpi_eject_store); + +static ssize_t +acpi_device_hid_show(struct device *dev, struct device_attribute *attr, char *buf) { + struct acpi_device *acpi_dev = to_acpi_device(dev); + + return sprintf(buf, "%s\n", acpi_device_hid(acpi_dev)); +} +static DEVICE_ATTR(hid, 0444, acpi_device_hid_show, NULL); + +static ssize_t acpi_device_uid_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct acpi_device *acpi_dev = to_acpi_device(dev); + + return sprintf(buf, "%s\n", acpi_dev->pnp.unique_id); +} +static DEVICE_ATTR(uid, 0444, acpi_device_uid_show, NULL); + +static ssize_t acpi_device_adr_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct acpi_device *acpi_dev = to_acpi_device(dev); + + return sprintf(buf, "0x%08x\n", + (unsigned int)(acpi_dev->pnp.bus_address)); +} +static DEVICE_ATTR(adr, 0444, acpi_device_adr_show, NULL); + +static ssize_t +acpi_device_path_show(struct device *dev, struct device_attribute *attr, char *buf) { + struct acpi_device *acpi_dev = to_acpi_device(dev); + struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL}; + int result; + + result = acpi_get_name(acpi_dev->handle, ACPI_FULL_PATHNAME, &path); + if (result) + goto end; + + result = sprintf(buf, "%s\n", (char*)path.pointer); + kfree(path.pointer); +end: + return result; +} +static DEVICE_ATTR(path, 0444, acpi_device_path_show, NULL); + +/* sysfs file that shows description text from the ACPI _STR method */ +static ssize_t description_show(struct device *dev, + struct device_attribute *attr, + char *buf) { + struct acpi_device *acpi_dev = to_acpi_device(dev); + int result; + + if (acpi_dev->pnp.str_obj == NULL) + return 0; + + /* + * The _STR object contains a Unicode identifier for a device. + * We need to convert to utf-8 so it can be displayed. + */ + result = utf16s_to_utf8s( + (wchar_t *)acpi_dev->pnp.str_obj->buffer.pointer, + acpi_dev->pnp.str_obj->buffer.length, + UTF16_LITTLE_ENDIAN, buf, + PAGE_SIZE); + + buf[result++] = '\n'; + + return result; +} +static DEVICE_ATTR(description, 0444, description_show, NULL); + +static ssize_t +acpi_device_sun_show(struct device *dev, struct device_attribute *attr, + char *buf) { + struct acpi_device *acpi_dev = to_acpi_device(dev); + acpi_status status; + unsigned long long sun; + + status = acpi_evaluate_integer(acpi_dev->handle, "_SUN", NULL, &sun); + if (ACPI_FAILURE(status)) + return -ENODEV; + + return sprintf(buf, "%llu\n", sun); +} +static DEVICE_ATTR(sun, 0444, acpi_device_sun_show, NULL); + +static ssize_t status_show(struct device *dev, struct device_attribute *attr, + char *buf) { + struct acpi_device *acpi_dev = to_acpi_device(dev); + acpi_status status; + unsigned long long sta; + + status = acpi_evaluate_integer(acpi_dev->handle, "_STA", NULL, &sta); + if (ACPI_FAILURE(status)) + return -ENODEV; + + return sprintf(buf, "%llu\n", sta); +} +static DEVICE_ATTR_RO(status); + +/** + * acpi_device_setup_files - Create sysfs attributes of an ACPI device. + * @dev: ACPI device object. + */ +int acpi_device_setup_files(struct acpi_device *dev) +{ + struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; + acpi_status status; + int result = 0; + + /* + * Devices gotten from FADT don't have a "path" attribute + */ + if (dev->handle) { + result = device_create_file(&dev->dev, &dev_attr_path); + if (result) + goto end; + } + + if (!list_empty(&dev->pnp.ids)) { + result = device_create_file(&dev->dev, &dev_attr_hid); + if (result) + goto end; + + result = device_create_file(&dev->dev, &dev_attr_modalias); + if (result) + goto end; + } + + /* + * If device has _STR, 'description' file is created + */ + if (acpi_has_method(dev->handle, "_STR")) { + status = acpi_evaluate_object(dev->handle, "_STR", + NULL, &buffer); + if (ACPI_FAILURE(status)) + buffer.pointer = NULL; + dev->pnp.str_obj = buffer.pointer; + result = device_create_file(&dev->dev, &dev_attr_description); + if (result) + goto end; + } + + if (dev->pnp.type.bus_address) + result = device_create_file(&dev->dev, &dev_attr_adr); + if (dev->pnp.unique_id) + result = device_create_file(&dev->dev, &dev_attr_uid); + + if (acpi_has_method(dev->handle, "_SUN")) { + result = device_create_file(&dev->dev, &dev_attr_sun); + if (result) + goto end; + } + + if (acpi_has_method(dev->handle, "_STA")) { + result = device_create_file(&dev->dev, &dev_attr_status); + if (result) + goto end; + } + + /* + * If device has _EJ0, 'eject' file is created that is used to trigger + * hot-removal function from userland. + */ + if (acpi_has_method(dev->handle, "_EJ0")) { + result = device_create_file(&dev->dev, &dev_attr_eject); + if (result) + return result; + } + + if (dev->flags.power_manageable) { + result = device_create_file(&dev->dev, &dev_attr_power_state); + if (result) + return result; + + if (dev->power.flags.power_resources) + result = device_create_file(&dev->dev, + &dev_attr_real_power_state); + } + +end: + return result; +} + +/** + * acpi_device_remove_files - Remove sysfs attributes of an ACPI device. + * @dev: ACPI device object. + */ +void acpi_device_remove_files(struct acpi_device *dev) +{ + if (dev->flags.power_manageable) { + device_remove_file(&dev->dev, &dev_attr_power_state); + if (dev->power.flags.power_resources) + device_remove_file(&dev->dev, + &dev_attr_real_power_state); + } + + /* + * If device has _STR, remove 'description' file + */ + if (acpi_has_method(dev->handle, "_STR")) { + kfree(dev->pnp.str_obj); + device_remove_file(&dev->dev, &dev_attr_description); + } + /* + * If device has _EJ0, remove 'eject' file. + */ + if (acpi_has_method(dev->handle, "_EJ0")) + device_remove_file(&dev->dev, &dev_attr_eject); + + if (acpi_has_method(dev->handle, "_SUN")) + device_remove_file(&dev->dev, &dev_attr_sun); + + if (dev->pnp.unique_id) + device_remove_file(&dev->dev, &dev_attr_uid); + if (dev->pnp.type.bus_address) + device_remove_file(&dev->dev, &dev_attr_adr); + device_remove_file(&dev->dev, &dev_attr_modalias); + device_remove_file(&dev->dev, &dev_attr_hid); + if (acpi_has_method(dev->handle, "_STA")) + device_remove_file(&dev->dev, &dev_attr_status); + if (dev->handle) + device_remove_file(&dev->dev, &dev_attr_path); +} diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index 4683a96..c529454 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -93,12 +93,21 @@ int acpi_device_add(struct acpi_device *device, void (*release)(struct device *)); void acpi_init_device_object(struct acpi_device *device, acpi_handle handle, int type, unsigned long long sta); +int acpi_device_setup_files(struct acpi_device *dev); +void acpi_device_remove_files(struct acpi_device *dev); void acpi_device_add_finalize(struct acpi_device *device); void acpi_free_pnp_ids(struct acpi_device_pnp *pnp); bool acpi_device_is_present(struct acpi_device *adev); bool acpi_device_is_battery(struct acpi_device *adev); /* -------------------------------------------------------------------------- + Device Matching and Notification + -------------------------------------------------------------------------- */ +struct acpi_device *acpi_companion_match(const struct device *dev); +int __acpi_device_uevent_modalias(struct acpi_device *adev, + struct kobj_uevent_env *env); + +/* -------------------------------------------------------------------------- Power Resource -------------------------------------------------------------------------- */ int acpi_power_init(void); diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index ec25635..099831f 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -115,117 +115,6 @@ int acpi_scan_add_handler_with_hotplug(struct acpi_scan_handler *handler, return 0; } -/** - * create_pnp_modalias - Create hid/cid(s) string for modalias and uevent - * @acpi_dev: ACPI device object. - * @modalias: Buffer to print into. - * @size: Size of the buffer. - * - * Creates hid/cid(s) string needed for modalias and uevent - * e.g. on a device with hid:IBM0001 and cid:ACPI0001 you get: - * char *modalias: "acpi:IBM0001:ACPI0001" - * Return: 0: no _HID and no _CID - * -EINVAL: output error - * -ENOMEM: output is truncated -*/ -static int create_pnp_modalias(struct acpi_device *acpi_dev, char *modalias, - int size) -{ - int len; - int count; - struct acpi_hardware_id *id; - - /* - * Since we skip ACPI_DT_NAMESPACE_HID from the modalias below, 0 should - * be returned if ACPI_DT_NAMESPACE_HID is the only ACPI/PNP ID in the - * device's list. - */ - count = 0; - list_for_each_entry(id, &acpi_dev->pnp.ids, list) - if (strcmp(id->id, ACPI_DT_NAMESPACE_HID)) - count++; - - if (!count) - return 0; - - len = snprintf(modalias, size, "acpi:"); - if (len <= 0) - return len; - - size -= len; - - list_for_each_entry(id, &acpi_dev->pnp.ids, list) { - if (!strcmp(id->id, ACPI_DT_NAMESPACE_HID)) - continue; - - count = snprintf(&modalias[len], size, "%s:", id->id); - if (count < 0) - return -EINVAL; - - if (count >= size) - return -ENOMEM; - - len += count; - size -= count; - } - modalias[len] = '\0'; - return len; -} - -/** - * create_of_modalias - Creates DT compatible string for modalias and uevent - * @acpi_dev: ACPI device object. - * @modalias: Buffer to print into. - * @size: Size of the buffer. - * - * Expose DT compatible modalias as of:NnameTCcompatible. This function should - * only be called for devices having ACPI_DT_NAMESPACE_HID in their list of - * ACPI/PNP IDs. - */ -static int create_of_modalias(struct acpi_device *acpi_dev, char *modalias, - int size) -{ - struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER }; - const union acpi_object *of_compatible, *obj; - int len, count; - int i, nval; - char *c; - - acpi_get_name(acpi_dev->handle, ACPI_SINGLE_NAME, &buf); - /* DT strings are all in lower case */ - for (c = buf.pointer; *c != '\0'; c++) - *c = tolower(*c); - - len = snprintf(modalias, size, "of:N%sT", (char *)buf.pointer); - ACPI_FREE(buf.pointer); - - if (len <= 0) - return len; - - of_compatible = acpi_dev->data.of_compatible; - if (of_compatible->type == ACPI_TYPE_PACKAGE) { - nval = of_compatible->package.count; - obj = of_compatible->package.elements; - } else { /* Must be ACPI_TYPE_STRING. */ - nval = 1; - obj = of_compatible; - } - for (i = 0; i < nval; i++, obj++) { - count = snprintf(&modalias[len], size, "C%s", - obj->string.pointer); - if (count < 0) - return -EINVAL; - - if (count >= size) - return -ENOMEM; - - len += count; - size -= count; - } - modalias[len] = '\0'; - return len; -} - /* * acpi_companion_match() - Can we match via ACPI companion device * @dev: Device in question @@ -247,7 +136,7 @@ static int create_of_modalias(struct acpi_device *acpi_dev, char *modalias, * resources available from it but they will be matched normally using functions * provided by their bus types (and analogously for their modalias). */ -static struct acpi_device *acpi_companion_match(const struct device *dev) +struct acpi_device *acpi_companion_match(const struct device *dev) { struct acpi_device *adev; struct mutex *physical_node_lock; @@ -276,103 +165,6 @@ static struct acpi_device *acpi_companion_match(const struct device *dev) return adev; } -static int __acpi_device_uevent_modalias(struct acpi_device *adev, - struct kobj_uevent_env *env) -{ - int len; - - if (!adev) - return -ENODEV; - - if (list_empty(&adev->pnp.ids)) - return 0; - - if (add_uevent_var(env, "MODALIAS=")) - return -ENOMEM; - - len = create_pnp_modalias(adev, &env->buf[env->buflen - 1], - sizeof(env->buf) - env->buflen); - if (len < 0) - return len; - - env->buflen += len; - if (!adev->data.of_compatible) - return 0; - - if (len > 0 && add_uevent_var(env, "MODALIAS=")) - return -ENOMEM; - - len = create_of_modalias(adev, &env->buf[env->buflen - 1], - sizeof(env->buf) - env->buflen); - if (len < 0) - return len; - - env->buflen += len; - - return 0; -} - -/* - * Creates uevent modalias field for ACPI enumerated devices. - * Because the other buses does not support ACPI HIDs & CIDs. - * e.g. for a device with hid:IBM0001 and cid:ACPI0001 you get: - * "acpi:IBM0001:ACPI0001" - */ -int acpi_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env) -{ - return __acpi_device_uevent_modalias(acpi_companion_match(dev), env); -} -EXPORT_SYMBOL_GPL(acpi_device_uevent_modalias); - -static int __acpi_device_modalias(struct acpi_device *adev, char *buf, int size) -{ - int len, count; - - if (!adev) - return -ENODEV; - - if (list_empty(&adev->pnp.ids)) - return 0; - - len = create_pnp_modalias(adev, buf, size - 1); - if (len < 0) { - return len; - } else if (len > 0) { - buf[len++] = '\n'; - size -= len; - } - if (!adev->data.of_compatible) - return len; - - count = create_of_modalias(adev, buf + len, size - 1); - if (count < 0) { - return count; - } else if (count > 0) { - len += count; - buf[len++] = '\n'; - } - - return len; -} - -/* - * Creates modalias sysfs attribute for ACPI enumerated devices. - * Because the other buses does not support ACPI HIDs & CIDs. - * e.g. for a device with hid:IBM0001 and cid:ACPI0001 you get: - * "acpi:IBM0001:ACPI0001" - */ -int acpi_device_modalias(struct device *dev, char *buf, int size) -{ - return __acpi_device_modalias(acpi_companion_match(dev), buf, size); -} -EXPORT_SYMBOL_GPL(acpi_device_modalias); - -static ssize_t -acpi_device_modalias_show(struct device *dev, struct device_attribute *attr, char *buf) { - return __acpi_device_modalias(to_acpi_device(dev), buf, 1024); -} -static DEVICE_ATTR(modalias, 0444, acpi_device_modalias_show, NULL); - bool acpi_scan_is_offline(struct acpi_device *adev, bool uevent) { struct acpi_device_physical_node *pn; @@ -701,279 +493,6 @@ void acpi_device_hotplug(struct acpi_device *adev, u32 src) unlock_device_hotplug(); } -static ssize_t real_power_state_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct acpi_device *adev = to_acpi_device(dev); - int state; - int ret; - - ret = acpi_device_get_power(adev, &state); - if (ret) - return ret; - - return sprintf(buf, "%s\n", acpi_power_state_string(state)); -} - -static DEVICE_ATTR(real_power_state, 0444, real_power_state_show, NULL); - -static ssize_t power_state_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct acpi_device *adev = to_acpi_device(dev); - - return sprintf(buf, "%s\n", acpi_power_state_string(adev->power.state)); -} - -static DEVICE_ATTR(power_state, 0444, power_state_show, NULL); - -static ssize_t -acpi_eject_store(struct device *d, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct acpi_device *acpi_device = to_acpi_device(d); - acpi_object_type not_used; - acpi_status status; - - if (!count || buf[0] != '1') - return -EINVAL; - - if ((!acpi_device->handler || !acpi_device->handler->hotplug.enabled) - && !acpi_device->driver) - return -ENODEV; - - status = acpi_get_type(acpi_device->handle, ¬_used); - if (ACPI_FAILURE(status) || !acpi_device->flags.ejectable) - return -ENODEV; - - get_device(&acpi_device->dev); - status = acpi_hotplug_schedule(acpi_device, ACPI_OST_EC_OSPM_EJECT); - if (ACPI_SUCCESS(status)) - return count; - - put_device(&acpi_device->dev); - acpi_evaluate_ost(acpi_device->handle, ACPI_OST_EC_OSPM_EJECT, - ACPI_OST_SC_NON_SPECIFIC_FAILURE, NULL); - return status == AE_NO_MEMORY ? -ENOMEM : -EAGAIN; -} - -static DEVICE_ATTR(eject, 0200, NULL, acpi_eject_store); - -static ssize_t -acpi_device_hid_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct acpi_device *acpi_dev = to_acpi_device(dev); - - return sprintf(buf, "%s\n", acpi_device_hid(acpi_dev)); -} -static DEVICE_ATTR(hid, 0444, acpi_device_hid_show, NULL); - -static ssize_t acpi_device_uid_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct acpi_device *acpi_dev = to_acpi_device(dev); - - return sprintf(buf, "%s\n", acpi_dev->pnp.unique_id); -} -static DEVICE_ATTR(uid, 0444, acpi_device_uid_show, NULL); - -static ssize_t acpi_device_adr_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct acpi_device *acpi_dev = to_acpi_device(dev); - - return sprintf(buf, "0x%08x\n", - (unsigned int)(acpi_dev->pnp.bus_address)); -} -static DEVICE_ATTR(adr, 0444, acpi_device_adr_show, NULL); - -static ssize_t -acpi_device_path_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct acpi_device *acpi_dev = to_acpi_device(dev); - struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL}; - int result; - - result = acpi_get_name(acpi_dev->handle, ACPI_FULL_PATHNAME, &path); - if (result) - goto end; - - result = sprintf(buf, "%s\n", (char*)path.pointer); - kfree(path.pointer); -end: - return result; -} -static DEVICE_ATTR(path, 0444, acpi_device_path_show, NULL); - -/* sysfs file that shows description text from the ACPI _STR method */ -static ssize_t description_show(struct device *dev, - struct device_attribute *attr, - char *buf) { - struct acpi_device *acpi_dev = to_acpi_device(dev); - int result; - - if (acpi_dev->pnp.str_obj == NULL) - return 0; - - /* - * The _STR object contains a Unicode identifier for a device. - * We need to convert to utf-8 so it can be displayed. - */ - result = utf16s_to_utf8s( - (wchar_t *)acpi_dev->pnp.str_obj->buffer.pointer, - acpi_dev->pnp.str_obj->buffer.length, - UTF16_LITTLE_ENDIAN, buf, - PAGE_SIZE); - - buf[result++] = '\n'; - - return result; -} -static DEVICE_ATTR(description, 0444, description_show, NULL); - -static ssize_t -acpi_device_sun_show(struct device *dev, struct device_attribute *attr, - char *buf) { - struct acpi_device *acpi_dev = to_acpi_device(dev); - acpi_status status; - unsigned long long sun; - - status = acpi_evaluate_integer(acpi_dev->handle, "_SUN", NULL, &sun); - if (ACPI_FAILURE(status)) - return -ENODEV; - - return sprintf(buf, "%llu\n", sun); -} -static DEVICE_ATTR(sun, 0444, acpi_device_sun_show, NULL); - -static ssize_t status_show(struct device *dev, struct device_attribute *attr, - char *buf) { - struct acpi_device *acpi_dev = to_acpi_device(dev); - acpi_status status; - unsigned long long sta; - - status = acpi_evaluate_integer(acpi_dev->handle, "_STA", NULL, &sta); - if (ACPI_FAILURE(status)) - return -ENODEV; - - return sprintf(buf, "%llu\n", sta); -} -static DEVICE_ATTR_RO(status); - -static int acpi_device_setup_files(struct acpi_device *dev) -{ - struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; - acpi_status status; - int result = 0; - - /* - * Devices gotten from FADT don't have a "path" attribute - */ - if (dev->handle) { - result = device_create_file(&dev->dev, &dev_attr_path); - if (result) - goto end; - } - - if (!list_empty(&dev->pnp.ids)) { - result = device_create_file(&dev->dev, &dev_attr_hid); - if (result) - goto end; - - result = device_create_file(&dev->dev, &dev_attr_modalias); - if (result) - goto end; - } - - /* - * If device has _STR, 'description' file is created - */ - if (acpi_has_method(dev->handle, "_STR")) { - status = acpi_evaluate_object(dev->handle, "_STR", - NULL, &buffer); - if (ACPI_FAILURE(status)) - buffer.pointer = NULL; - dev->pnp.str_obj = buffer.pointer; - result = device_create_file(&dev->dev, &dev_attr_description); - if (result) - goto end; - } - - if (dev->pnp.type.bus_address) - result = device_create_file(&dev->dev, &dev_attr_adr); - if (dev->pnp.unique_id) - result = device_create_file(&dev->dev, &dev_attr_uid); - - if (acpi_has_method(dev->handle, "_SUN")) { - result = device_create_file(&dev->dev, &dev_attr_sun); - if (result) - goto end; - } - - if (acpi_has_method(dev->handle, "_STA")) { - result = device_create_file(&dev->dev, &dev_attr_status); - if (result) - goto end; - } - - /* - * If device has _EJ0, 'eject' file is created that is used to trigger - * hot-removal function from userland. - */ - if (acpi_has_method(dev->handle, "_EJ0")) { - result = device_create_file(&dev->dev, &dev_attr_eject); - if (result) - return result; - } - - if (dev->flags.power_manageable) { - result = device_create_file(&dev->dev, &dev_attr_power_state); - if (result) - return result; - - if (dev->power.flags.power_resources) - result = device_create_file(&dev->dev, - &dev_attr_real_power_state); - } - -end: - return result; -} - -static void acpi_device_remove_files(struct acpi_device *dev) -{ - if (dev->flags.power_manageable) { - device_remove_file(&dev->dev, &dev_attr_power_state); - if (dev->power.flags.power_resources) - device_remove_file(&dev->dev, - &dev_attr_real_power_state); - } - - /* - * If device has _STR, remove 'description' file - */ - if (acpi_has_method(dev->handle, "_STR")) { - kfree(dev->pnp.str_obj); - device_remove_file(&dev->dev, &dev_attr_description); - } - /* - * If device has _EJ0, remove 'eject' file. - */ - if (acpi_has_method(dev->handle, "_EJ0")) - device_remove_file(&dev->dev, &dev_attr_eject); - - if (acpi_has_method(dev->handle, "_SUN")) - device_remove_file(&dev->dev, &dev_attr_sun); - - if (dev->pnp.unique_id) - device_remove_file(&dev->dev, &dev_attr_uid); - if (dev->pnp.type.bus_address) - device_remove_file(&dev->dev, &dev_attr_adr); - device_remove_file(&dev->dev, &dev_attr_modalias); - device_remove_file(&dev->dev, &dev_attr_hid); - if (acpi_has_method(dev->handle, "_STA")) - device_remove_file(&dev->dev, &dev_attr_status); - if (dev->handle) - device_remove_file(&dev->dev, &dev_attr_path); -} /* -------------------------------------------------------------------------- ACPI Bus operations -------------------------------------------------------------------------- */ -- cgit v0.10.2 From 68c6b148daa6e45a85b31ef60ed9c9bfd556fff0 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 17 Jul 2015 22:53:52 +0200 Subject: ACPI / scan: Move device matching code to bus.c To reduce the size of scan.c and improve the readability of it, move code related device matching into drivers/acpi/bus.c. Signed-off-by: Rafael J. Wysocki diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 513e7230e..ce80580 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -424,6 +424,200 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) } /* -------------------------------------------------------------------------- + Device Matching + -------------------------------------------------------------------------- */ + +/* + * acpi_companion_match() - Can we match via ACPI companion device + * @dev: Device in question + * + * Check if the given device has an ACPI companion and if that companion has + * a valid list of PNP IDs, and if the device is the first (primary) physical + * device associated with it. Return the companion pointer if that's the case + * or NULL otherwise. + * + * If multiple physical devices are attached to a single ACPI companion, we need + * to be careful. The usage scenario for this kind of relationship is that all + * of the physical devices in question use resources provided by the ACPI + * companion. A typical case is an MFD device where all the sub-devices share + * the parent's ACPI companion. In such cases we can only allow the primary + * (first) physical device to be matched with the help of the companion's PNP + * IDs. + * + * Additional physical devices sharing the ACPI companion can still use + * resources available from it but they will be matched normally using functions + * provided by their bus types (and analogously for their modalias). + */ +struct acpi_device *acpi_companion_match(const struct device *dev) +{ + struct acpi_device *adev; + struct mutex *physical_node_lock; + + adev = ACPI_COMPANION(dev); + if (!adev) + return NULL; + + if (list_empty(&adev->pnp.ids)) + return NULL; + + physical_node_lock = &adev->physical_node_lock; + mutex_lock(physical_node_lock); + if (list_empty(&adev->physical_node_list)) { + adev = NULL; + } else { + const struct acpi_device_physical_node *node; + + node = list_first_entry(&adev->physical_node_list, + struct acpi_device_physical_node, node); + if (node->dev != dev) + adev = NULL; + } + mutex_unlock(physical_node_lock); + + return adev; +} + +/** + * acpi_of_match_device - Match device object using the "compatible" property. + * @adev: ACPI device object to match. + * @of_match_table: List of device IDs to match against. + * + * If @dev has an ACPI companion which has ACPI_DT_NAMESPACE_HID in its list of + * identifiers and a _DSD object with the "compatible" property, use that + * property to match against the given list of identifiers. + */ +static bool acpi_of_match_device(struct acpi_device *adev, + const struct of_device_id *of_match_table) +{ + const union acpi_object *of_compatible, *obj; + int i, nval; + + if (!adev) + return false; + + of_compatible = adev->data.of_compatible; + if (!of_match_table || !of_compatible) + return false; + + if (of_compatible->type == ACPI_TYPE_PACKAGE) { + nval = of_compatible->package.count; + obj = of_compatible->package.elements; + } else { /* Must be ACPI_TYPE_STRING. */ + nval = 1; + obj = of_compatible; + } + /* Now we can look for the driver DT compatible strings */ + for (i = 0; i < nval; i++, obj++) { + const struct of_device_id *id; + + for (id = of_match_table; id->compatible[0]; id++) + if (!strcasecmp(obj->string.pointer, id->compatible)) + return true; + } + + return false; +} + +static bool __acpi_match_device_cls(const struct acpi_device_id *id, + struct acpi_hardware_id *hwid) +{ + int i, msk, byte_shift; + char buf[3]; + + if (!id->cls) + return false; + + /* Apply class-code bitmask, before checking each class-code byte */ + for (i = 1; i <= 3; i++) { + byte_shift = 8 * (3 - i); + msk = (id->cls_msk >> byte_shift) & 0xFF; + if (!msk) + continue; + + sprintf(buf, "%02x", (id->cls >> byte_shift) & msk); + if (strncmp(buf, &hwid->id[(i - 1) * 2], 2)) + return false; + } + return true; +} + +static const struct acpi_device_id *__acpi_match_device( + struct acpi_device *device, + const struct acpi_device_id *ids, + const struct of_device_id *of_ids) +{ + const struct acpi_device_id *id; + struct acpi_hardware_id *hwid; + + /* + * If the device is not present, it is unnecessary to load device + * driver for it. + */ + if (!device || !device->status.present) + return NULL; + + list_for_each_entry(hwid, &device->pnp.ids, list) { + /* First, check the ACPI/PNP IDs provided by the caller. */ + for (id = ids; id->id[0] || id->cls; id++) { + if (id->id[0] && !strcmp((char *) id->id, hwid->id)) + return id; + else if (id->cls && __acpi_match_device_cls(id, hwid)) + return id; + } + + /* + * Next, check ACPI_DT_NAMESPACE_HID and try to match the + * "compatible" property if found. + * + * The id returned by the below is not valid, but the only + * caller passing non-NULL of_ids here is only interested in + * whether or not the return value is NULL. + */ + if (!strcmp(ACPI_DT_NAMESPACE_HID, hwid->id) + && acpi_of_match_device(device, of_ids)) + return id; + } + return NULL; +} + +/** + * acpi_match_device - Match a struct device against a given list of ACPI IDs + * @ids: Array of struct acpi_device_id object to match against. + * @dev: The device structure to match. + * + * Check if @dev has a valid ACPI handle and if there is a struct acpi_device + * object for that handle and use that object to match against a given list of + * device IDs. + * + * Return a pointer to the first matching ID on success or %NULL on failure. + */ +const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids, + const struct device *dev) +{ + return __acpi_match_device(acpi_companion_match(dev), ids, NULL); +} +EXPORT_SYMBOL_GPL(acpi_match_device); + +int acpi_match_device_ids(struct acpi_device *device, + const struct acpi_device_id *ids) +{ + return __acpi_match_device(device, ids, NULL) ? 0 : -ENOENT; +} +EXPORT_SYMBOL(acpi_match_device_ids); + +bool acpi_driver_match_device(struct device *dev, + const struct device_driver *drv) +{ + if (!drv->acpi_match_table) + return acpi_of_match_device(ACPI_COMPANION(dev), + drv->of_match_table); + + return !!__acpi_match_device(acpi_companion_match(dev), + drv->acpi_match_table, drv->of_match_table); +} +EXPORT_SYMBOL_GPL(acpi_driver_match_device); + +/* -------------------------------------------------------------------------- Initialization/Cleanup -------------------------------------------------------------------------- */ diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 099831f..68877bc 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -115,55 +115,6 @@ int acpi_scan_add_handler_with_hotplug(struct acpi_scan_handler *handler, return 0; } -/* - * acpi_companion_match() - Can we match via ACPI companion device - * @dev: Device in question - * - * Check if the given device has an ACPI companion and if that companion has - * a valid list of PNP IDs, and if the device is the first (primary) physical - * device associated with it. Return the companion pointer if that's the case - * or NULL otherwise. - * - * If multiple physical devices are attached to a single ACPI companion, we need - * to be careful. The usage scenario for this kind of relationship is that all - * of the physical devices in question use resources provided by the ACPI - * companion. A typical case is an MFD device where all the sub-devices share - * the parent's ACPI companion. In such cases we can only allow the primary - * (first) physical device to be matched with the help of the companion's PNP - * IDs. - * - * Additional physical devices sharing the ACPI companion can still use - * resources available from it but they will be matched normally using functions - * provided by their bus types (and analogously for their modalias). - */ -struct acpi_device *acpi_companion_match(const struct device *dev) -{ - struct acpi_device *adev; - struct mutex *physical_node_lock; - - adev = ACPI_COMPANION(dev); - if (!adev) - return NULL; - - if (list_empty(&adev->pnp.ids)) - return NULL; - - physical_node_lock = &adev->physical_node_lock; - mutex_lock(physical_node_lock); - if (list_empty(&adev->physical_node_list)) { - adev = NULL; - } else { - const struct acpi_device_physical_node *node; - - node = list_first_entry(&adev->physical_node_list, - struct acpi_device_physical_node, node); - if (node->dev != dev) - adev = NULL; - } - mutex_unlock(physical_node_lock); - - return adev; -} bool acpi_scan_is_offline(struct acpi_device *adev, bool uevent) { @@ -497,146 +448,6 @@ void acpi_device_hotplug(struct acpi_device *adev, u32 src) ACPI Bus operations -------------------------------------------------------------------------- */ -/** - * acpi_of_match_device - Match device object using the "compatible" property. - * @adev: ACPI device object to match. - * @of_match_table: List of device IDs to match against. - * - * If @dev has an ACPI companion which has ACPI_DT_NAMESPACE_HID in its list of - * identifiers and a _DSD object with the "compatible" property, use that - * property to match against the given list of identifiers. - */ -static bool acpi_of_match_device(struct acpi_device *adev, - const struct of_device_id *of_match_table) -{ - const union acpi_object *of_compatible, *obj; - int i, nval; - - if (!adev) - return false; - - of_compatible = adev->data.of_compatible; - if (!of_match_table || !of_compatible) - return false; - - if (of_compatible->type == ACPI_TYPE_PACKAGE) { - nval = of_compatible->package.count; - obj = of_compatible->package.elements; - } else { /* Must be ACPI_TYPE_STRING. */ - nval = 1; - obj = of_compatible; - } - /* Now we can look for the driver DT compatible strings */ - for (i = 0; i < nval; i++, obj++) { - const struct of_device_id *id; - - for (id = of_match_table; id->compatible[0]; id++) - if (!strcasecmp(obj->string.pointer, id->compatible)) - return true; - } - - return false; -} - -static bool __acpi_match_device_cls(const struct acpi_device_id *id, - struct acpi_hardware_id *hwid) -{ - int i, msk, byte_shift; - char buf[3]; - - if (!id->cls) - return false; - - /* Apply class-code bitmask, before checking each class-code byte */ - for (i = 1; i <= 3; i++) { - byte_shift = 8 * (3 - i); - msk = (id->cls_msk >> byte_shift) & 0xFF; - if (!msk) - continue; - - sprintf(buf, "%02x", (id->cls >> byte_shift) & msk); - if (strncmp(buf, &hwid->id[(i - 1) * 2], 2)) - return false; - } - return true; -} - -static const struct acpi_device_id *__acpi_match_device( - struct acpi_device *device, - const struct acpi_device_id *ids, - const struct of_device_id *of_ids) -{ - const struct acpi_device_id *id; - struct acpi_hardware_id *hwid; - - /* - * If the device is not present, it is unnecessary to load device - * driver for it. - */ - if (!device || !device->status.present) - return NULL; - - list_for_each_entry(hwid, &device->pnp.ids, list) { - /* First, check the ACPI/PNP IDs provided by the caller. */ - for (id = ids; id->id[0] || id->cls; id++) { - if (id->id[0] && !strcmp((char *) id->id, hwid->id)) - return id; - else if (id->cls && __acpi_match_device_cls(id, hwid)) - return id; - } - - /* - * Next, check ACPI_DT_NAMESPACE_HID and try to match the - * "compatible" property if found. - * - * The id returned by the below is not valid, but the only - * caller passing non-NULL of_ids here is only interested in - * whether or not the return value is NULL. - */ - if (!strcmp(ACPI_DT_NAMESPACE_HID, hwid->id) - && acpi_of_match_device(device, of_ids)) - return id; - } - return NULL; -} - -/** - * acpi_match_device - Match a struct device against a given list of ACPI IDs - * @ids: Array of struct acpi_device_id object to match against. - * @dev: The device structure to match. - * - * Check if @dev has a valid ACPI handle and if there is a struct acpi_device - * object for that handle and use that object to match against a given list of - * device IDs. - * - * Return a pointer to the first matching ID on success or %NULL on failure. - */ -const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids, - const struct device *dev) -{ - return __acpi_match_device(acpi_companion_match(dev), ids, NULL); -} -EXPORT_SYMBOL_GPL(acpi_match_device); - -int acpi_match_device_ids(struct acpi_device *device, - const struct acpi_device_id *ids) -{ - return __acpi_match_device(device, ids, NULL) ? 0 : -ENOENT; -} -EXPORT_SYMBOL(acpi_match_device_ids); - -bool acpi_driver_match_device(struct device *dev, - const struct device_driver *drv) -{ - if (!drv->acpi_match_table) - return acpi_of_match_device(ACPI_COMPANION(dev), - drv->of_match_table); - - return !!__acpi_match_device(acpi_companion_match(dev), - drv->acpi_match_table, drv->of_match_table); -} -EXPORT_SYMBOL_GPL(acpi_driver_match_device); - static void acpi_free_power_resources_lists(struct acpi_device *device) { int i; -- cgit v0.10.2 From 5894b0c46e49b5ecc25f22b2d1b8232aab00ce97 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 17 Jul 2015 22:54:01 +0200 Subject: ACPI / scan: Move bus operations and notification routines to bus.c To reduce the size of scan.c and improve the readability of it, move code related to device notification, the definitions of the ACPI bus operations and the driver management code to drivers/acpi/bus.c. Signed-off-by: Rafael J. Wysocki diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index ce80580..2f50fc4 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -423,6 +423,65 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) acpi_evaluate_ost(handle, type, ost_code, NULL); } +static void acpi_device_notify(acpi_handle handle, u32 event, void *data) +{ + struct acpi_device *device = data; + + device->driver->ops.notify(device, event); +} + +static void acpi_device_notify_fixed(void *data) +{ + struct acpi_device *device = data; + + /* Fixed hardware devices have no handles */ + acpi_device_notify(NULL, ACPI_FIXED_HARDWARE_EVENT, device); +} + +static u32 acpi_device_fixed_event(void *data) +{ + acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_device_notify_fixed, data); + return ACPI_INTERRUPT_HANDLED; +} + +static int acpi_device_install_notify_handler(struct acpi_device *device) +{ + acpi_status status; + + if (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON) + status = + acpi_install_fixed_event_handler(ACPI_EVENT_POWER_BUTTON, + acpi_device_fixed_event, + device); + else if (device->device_type == ACPI_BUS_TYPE_SLEEP_BUTTON) + status = + acpi_install_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON, + acpi_device_fixed_event, + device); + else + status = acpi_install_notify_handler(device->handle, + ACPI_DEVICE_NOTIFY, + acpi_device_notify, + device); + + if (ACPI_FAILURE(status)) + return -EINVAL; + return 0; +} + +static void acpi_device_remove_notify_handler(struct acpi_device *device) +{ + if (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON) + acpi_remove_fixed_event_handler(ACPI_EVENT_POWER_BUTTON, + acpi_device_fixed_event); + else if (device->device_type == ACPI_BUS_TYPE_SLEEP_BUTTON) + acpi_remove_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON, + acpi_device_fixed_event); + else + acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, + acpi_device_notify); +} + /* -------------------------------------------------------------------------- Device Matching -------------------------------------------------------------------------- */ @@ -618,6 +677,131 @@ bool acpi_driver_match_device(struct device *dev, EXPORT_SYMBOL_GPL(acpi_driver_match_device); /* -------------------------------------------------------------------------- + ACPI Driver Management + -------------------------------------------------------------------------- */ + +/** + * acpi_bus_register_driver - register a driver with the ACPI bus + * @driver: driver being registered + * + * Registers a driver with the ACPI bus. Searches the namespace for all + * devices that match the driver's criteria and binds. Returns zero for + * success or a negative error status for failure. + */ +int acpi_bus_register_driver(struct acpi_driver *driver) +{ + int ret; + + if (acpi_disabled) + return -ENODEV; + driver->drv.name = driver->name; + driver->drv.bus = &acpi_bus_type; + driver->drv.owner = driver->owner; + + ret = driver_register(&driver->drv); + return ret; +} + +EXPORT_SYMBOL(acpi_bus_register_driver); + +/** + * acpi_bus_unregister_driver - unregisters a driver with the ACPI bus + * @driver: driver to unregister + * + * Unregisters a driver with the ACPI bus. Searches the namespace for all + * devices that match the driver's criteria and unbinds. + */ +void acpi_bus_unregister_driver(struct acpi_driver *driver) +{ + driver_unregister(&driver->drv); +} + +EXPORT_SYMBOL(acpi_bus_unregister_driver); + +/* -------------------------------------------------------------------------- + ACPI Bus operations + -------------------------------------------------------------------------- */ + +static int acpi_bus_match(struct device *dev, struct device_driver *drv) +{ + struct acpi_device *acpi_dev = to_acpi_device(dev); + struct acpi_driver *acpi_drv = to_acpi_driver(drv); + + return acpi_dev->flags.match_driver + && !acpi_match_device_ids(acpi_dev, acpi_drv->ids); +} + +static int acpi_device_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + return __acpi_device_uevent_modalias(to_acpi_device(dev), env); +} + +static int acpi_device_probe(struct device *dev) +{ + struct acpi_device *acpi_dev = to_acpi_device(dev); + struct acpi_driver *acpi_drv = to_acpi_driver(dev->driver); + int ret; + + if (acpi_dev->handler && !acpi_is_pnp_device(acpi_dev)) + return -EINVAL; + + if (!acpi_drv->ops.add) + return -ENOSYS; + + ret = acpi_drv->ops.add(acpi_dev); + if (ret) + return ret; + + acpi_dev->driver = acpi_drv; + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Driver [%s] successfully bound to device [%s]\n", + acpi_drv->name, acpi_dev->pnp.bus_id)); + + if (acpi_drv->ops.notify) { + ret = acpi_device_install_notify_handler(acpi_dev); + if (ret) { + if (acpi_drv->ops.remove) + acpi_drv->ops.remove(acpi_dev); + + acpi_dev->driver = NULL; + acpi_dev->driver_data = NULL; + return ret; + } + } + + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found driver [%s] for device [%s]\n", + acpi_drv->name, acpi_dev->pnp.bus_id)); + get_device(dev); + return 0; +} + +static int acpi_device_remove(struct device * dev) +{ + struct acpi_device *acpi_dev = to_acpi_device(dev); + struct acpi_driver *acpi_drv = acpi_dev->driver; + + if (acpi_drv) { + if (acpi_drv->ops.notify) + acpi_device_remove_notify_handler(acpi_dev); + if (acpi_drv->ops.remove) + acpi_drv->ops.remove(acpi_dev); + } + acpi_dev->driver = NULL; + acpi_dev->driver_data = NULL; + + put_device(dev); + return 0; +} + +struct bus_type acpi_bus_type = { + .name = "acpi", + .match = acpi_bus_match, + .probe = acpi_device_probe, + .remove = acpi_device_remove, + .uevent = acpi_device_uevent, +}; + +/* -------------------------------------------------------------------------- Initialization/Cleanup -------------------------------------------------------------------------- */ diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 68877bc..f541f68 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -444,10 +444,6 @@ void acpi_device_hotplug(struct acpi_device *adev, u32 src) unlock_device_hotplug(); } -/* -------------------------------------------------------------------------- - ACPI Bus operations - -------------------------------------------------------------------------- */ - static void acpi_free_power_resources_lists(struct acpi_device *device) { int i; @@ -474,144 +470,6 @@ static void acpi_device_release(struct device *dev) kfree(acpi_dev); } -static int acpi_bus_match(struct device *dev, struct device_driver *drv) -{ - struct acpi_device *acpi_dev = to_acpi_device(dev); - struct acpi_driver *acpi_drv = to_acpi_driver(drv); - - return acpi_dev->flags.match_driver - && !acpi_match_device_ids(acpi_dev, acpi_drv->ids); -} - -static int acpi_device_uevent(struct device *dev, struct kobj_uevent_env *env) -{ - return __acpi_device_uevent_modalias(to_acpi_device(dev), env); -} - -static void acpi_device_notify(acpi_handle handle, u32 event, void *data) -{ - struct acpi_device *device = data; - - device->driver->ops.notify(device, event); -} - -static void acpi_device_notify_fixed(void *data) -{ - struct acpi_device *device = data; - - /* Fixed hardware devices have no handles */ - acpi_device_notify(NULL, ACPI_FIXED_HARDWARE_EVENT, device); -} - -static u32 acpi_device_fixed_event(void *data) -{ - acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_device_notify_fixed, data); - return ACPI_INTERRUPT_HANDLED; -} - -static int acpi_device_install_notify_handler(struct acpi_device *device) -{ - acpi_status status; - - if (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON) - status = - acpi_install_fixed_event_handler(ACPI_EVENT_POWER_BUTTON, - acpi_device_fixed_event, - device); - else if (device->device_type == ACPI_BUS_TYPE_SLEEP_BUTTON) - status = - acpi_install_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON, - acpi_device_fixed_event, - device); - else - status = acpi_install_notify_handler(device->handle, - ACPI_DEVICE_NOTIFY, - acpi_device_notify, - device); - - if (ACPI_FAILURE(status)) - return -EINVAL; - return 0; -} - -static void acpi_device_remove_notify_handler(struct acpi_device *device) -{ - if (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON) - acpi_remove_fixed_event_handler(ACPI_EVENT_POWER_BUTTON, - acpi_device_fixed_event); - else if (device->device_type == ACPI_BUS_TYPE_SLEEP_BUTTON) - acpi_remove_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON, - acpi_device_fixed_event); - else - acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, - acpi_device_notify); -} - -static int acpi_device_probe(struct device *dev) -{ - struct acpi_device *acpi_dev = to_acpi_device(dev); - struct acpi_driver *acpi_drv = to_acpi_driver(dev->driver); - int ret; - - if (acpi_dev->handler && !acpi_is_pnp_device(acpi_dev)) - return -EINVAL; - - if (!acpi_drv->ops.add) - return -ENOSYS; - - ret = acpi_drv->ops.add(acpi_dev); - if (ret) - return ret; - - acpi_dev->driver = acpi_drv; - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Driver [%s] successfully bound to device [%s]\n", - acpi_drv->name, acpi_dev->pnp.bus_id)); - - if (acpi_drv->ops.notify) { - ret = acpi_device_install_notify_handler(acpi_dev); - if (ret) { - if (acpi_drv->ops.remove) - acpi_drv->ops.remove(acpi_dev); - - acpi_dev->driver = NULL; - acpi_dev->driver_data = NULL; - return ret; - } - } - - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found driver [%s] for device [%s]\n", - acpi_drv->name, acpi_dev->pnp.bus_id)); - get_device(dev); - return 0; -} - -static int acpi_device_remove(struct device * dev) -{ - struct acpi_device *acpi_dev = to_acpi_device(dev); - struct acpi_driver *acpi_drv = acpi_dev->driver; - - if (acpi_drv) { - if (acpi_drv->ops.notify) - acpi_device_remove_notify_handler(acpi_dev); - if (acpi_drv->ops.remove) - acpi_drv->ops.remove(acpi_dev); - } - acpi_dev->driver = NULL; - acpi_dev->driver_data = NULL; - - put_device(dev); - return 0; -} - -struct bus_type acpi_bus_type = { - .name = "acpi", - .match = acpi_bus_match, - .probe = acpi_device_probe, - .remove = acpi_device_remove, - .uevent = acpi_device_uevent, -}; - static void acpi_device_del(struct acpi_device *device) { mutex_lock(&acpi_device_lock); @@ -859,47 +717,6 @@ struct acpi_device *acpi_get_next_child(struct device *dev, } /* -------------------------------------------------------------------------- - Driver Management - -------------------------------------------------------------------------- */ -/** - * acpi_bus_register_driver - register a driver with the ACPI bus - * @driver: driver being registered - * - * Registers a driver with the ACPI bus. Searches the namespace for all - * devices that match the driver's criteria and binds. Returns zero for - * success or a negative error status for failure. - */ -int acpi_bus_register_driver(struct acpi_driver *driver) -{ - int ret; - - if (acpi_disabled) - return -ENODEV; - driver->drv.name = driver->name; - driver->drv.bus = &acpi_bus_type; - driver->drv.owner = driver->owner; - - ret = driver_register(&driver->drv); - return ret; -} - -EXPORT_SYMBOL(acpi_bus_register_driver); - -/** - * acpi_bus_unregister_driver - unregisters a driver with the ACPI bus - * @driver: driver to unregister - * - * Unregisters a driver with the ACPI bus. Searches the namespace for all - * devices that match the driver's criteria and unbinds. - */ -void acpi_bus_unregister_driver(struct acpi_driver *driver) -{ - driver_unregister(&driver->drv); -} - -EXPORT_SYMBOL(acpi_bus_unregister_driver); - -/* -------------------------------------------------------------------------- Device Enumeration -------------------------------------------------------------------------- */ static struct acpi_device *acpi_bus_get_parent(acpi_handle handle) -- cgit v0.10.2 From 1dcc3d3362b0c97e48290f7786be85b4cec2a147 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 17 Jul 2015 22:54:09 +0200 Subject: ACPI / bus: Move ACPI bus type registration Move the registration of the ACPI bus type to acpi_bus_init() and avoid using ACPI going forward if it fails (too many things depend on the presence of the ACPI bus type). Signed-off-by: Rafael J. Wysocki diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 2f50fc4..7a3ad92 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -1039,7 +1039,9 @@ static int __init acpi_bus_init(void) */ acpi_root_dir = proc_mkdir(ACPI_BUS_FILE_ROOT, NULL); - return 0; + result = bus_register(&acpi_bus_type); + if (!result) + return 0; /* Mimic structured exception handling */ error1: diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index f541f68..2fe5a37 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1891,12 +1891,6 @@ int __init acpi_scan_init(void) { int result; - result = bus_register(&acpi_bus_type); - if (result) { - /* We don't want to quit even if we failed to add suspend/resume */ - printk(KERN_ERR PREFIX "Could not register bus type\n"); - } - acpi_pci_root_init(); acpi_pci_link_init(); acpi_processor_init(); -- cgit v0.10.2 From 8ce344c66e3ce122585cfe68be1ef0ffd176380d Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 19 Jul 2015 18:50:38 +0200 Subject: ACPI / processor: remove leftover __refdata annotations The processor_handler structure does not reference any __init / __exit code or data. Therefore the __refdata annotation is not needed. It used to be prior to commit fe7bf106ebc2 ("acpi: delete __cpuinit usage from all acpi files") due to the __cpuinit annotation of acpi_processor_add(). But with that commit in place that requirement has gone. The same is true for the acpi_cpu_notifier notifier block. acpi_cpu_soft_notify() used to be marked __cpuinit but lost its annotation in the above mentioned commit as well. Therefore the __refdata annotation isn't needed there either. Just drop the unneded __refdata annotations to be able to catch future section mismatches. Signed-off-by: Mathias Krause Signed-off-by: Rafael J. Wysocki diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c index 92a5f73..985b8a8 100644 --- a/drivers/acpi/acpi_processor.c +++ b/drivers/acpi/acpi_processor.c @@ -485,7 +485,7 @@ static const struct acpi_device_id processor_device_ids[] = { { } }; -static struct acpi_scan_handler __refdata processor_handler = { +static struct acpi_scan_handler processor_handler = { .ids = processor_device_ids, .attach = acpi_processor_add, #ifdef CONFIG_ACPI_HOTPLUG_CPU diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c index d9f7158..cc820d8 100644 --- a/drivers/acpi/processor_driver.c +++ b/drivers/acpi/processor_driver.c @@ -159,7 +159,7 @@ static int acpi_cpu_soft_notify(struct notifier_block *nfb, return NOTIFY_OK; } -static struct notifier_block __refdata acpi_cpu_notifier = { +static struct notifier_block acpi_cpu_notifier = { .notifier_call = acpi_cpu_soft_notify, }; -- cgit v0.10.2 From 10742619ac63641bcce0a7c07f0dc7509201ed72 Mon Sep 17 00:00:00 2001 From: Nicolas Iooss Date: Sat, 1 Aug 2015 21:32:17 +0800 Subject: ACPI: fix acpi_debugfs_init prototype acpi_debugfs_init function is declared with return type int in drivers/acpi/internal.h when CONFIG_DEBUG_FS is enabled, but its definition in drivers/acpi/debugfs.c has return type void. This is due to commit aecad432fd68 ("ACPI: Cleanup custom_method debug stuff"), which changed the return type from int to void without updating the declaration. Fix this inconsistency by updating acpi_debugfs_init prototype. While at it, include internal.h in debugfs.c so that the compiler can check that the declaration and definition remain compatible. Signed-off-by: Nicolas Iooss Signed-off-by: Rafael J. Wysocki diff --git a/drivers/acpi/debugfs.c b/drivers/acpi/debugfs.c index 6b1919f..68bb305 100644 --- a/drivers/acpi/debugfs.c +++ b/drivers/acpi/debugfs.c @@ -7,6 +7,8 @@ #include #include +#include "internal.h" + #define _COMPONENT ACPI_SYSTEM_COMPONENT ACPI_MODULE_NAME("debugfs"); diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index 8c71cb8..daf0974 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -67,7 +67,7 @@ void acpi_scan_hotplug_enabled(struct acpi_hotplug_profile *hotplug, bool val); #ifdef CONFIG_DEBUG_FS extern struct dentry *acpi_debugfs_dir; -int acpi_debugfs_init(void); +void acpi_debugfs_init(void); #else static inline void acpi_debugfs_init(void) { return; } #endif -- cgit v0.10.2 From d3c68f218f927bd4b14b586ea2dcecee54cf09ad Mon Sep 17 00:00:00 2001 From: Ashwin Chaugule Date: Wed, 5 Aug 2015 09:40:24 -0400 Subject: PCC: Initialize PCC Mailbox earlier at boot This change initializes the PCC Mailbox earlier than the ACPI processor driver. This enables drivers introduced in follow up patches (e.g. CPPC) to be probed via the ACPI processor driver interface. The CPPC probe requires the PCC channel to be initialized for it to query each CPUs performance capabilities. Signed-off-by: Ashwin Chaugule Reviewed-by: Al Stone Signed-off-by: Rafael J. Wysocki diff --git a/drivers/mailbox/pcc.c b/drivers/mailbox/pcc.c index 26d121d..68885a8 100644 --- a/drivers/mailbox/pcc.c +++ b/drivers/mailbox/pcc.c @@ -352,4 +352,10 @@ static int __init pcc_init(void) return 0; } -device_initcall(pcc_init); + +/* + * Make PCC init postcore so that users of this mailbox + * such as the ACPI Processor driver have it available + * at their init. + */ +postcore_initcall(pcc_init); -- cgit v0.10.2 From 239708a3af44064366f1af0eea02dc1e8991c11b Mon Sep 17 00:00:00 2001 From: Ashwin Chaugule Date: Wed, 5 Aug 2015 09:40:25 -0400 Subject: ACPI: Split out ACPI PSS from ACPI Processor driver The ACPI processor driver is currently tied too closely to the ACPI P-states (PSS) and other related constructs for controlling CPU performance. The newer ACPI specification (v5.1 onwards) introduces alternative methods to PSS. These new mechanisms are described within each ACPI Processor object and so they need to be scanned whenever a new Processor object is detected. This patch introduces a new Kconfig symbol to allow for finer configurability among the two options for controlling performance states. There is no change in functionality and the option is auto-selected by the architectures which support it. A future commit will introduce support for CPPC: A newer method of controlling CPU performance. The OS is not expected to support CPPC and PSS at the same time, so the Kconfig option lets us make the two mutually exclusive at compile time. Signed-off-by: Ashwin Chaugule [ rjw: Changelog ] Signed-off-by: Rafael J. Wysocki diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 114cf48..d6e2a86 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -189,17 +189,20 @@ config ACPI_DOCK This driver supports ACPI-controlled docking stations and removable drive bays such as the IBM Ultrabay and the Dell Module Bay. +config ACPI_CPU_FREQ_PSS + bool + select THERMAL + config ACPI_PROCESSOR tristate "Processor" - select THERMAL - select CPU_IDLE depends on X86 || IA64 + select CPU_IDLE + select ACPI_CPU_FREQ_PSS default y help - This driver installs ACPI as the idle handler for Linux and uses - ACPI C2 and C3 processor states to save power on systems that - support it. It is required by several flavors of cpufreq - performance-state drivers. + This driver adds support for the ACPI Processor package. It is required + by several flavors of cpufreq performance-state, thermal, throttling and + idle drivers. To compile this driver as a module, choose M here: the module will be called processor. diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index 8321430..7e97aef 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -80,8 +80,9 @@ obj-$(CONFIG_ACPI_CUSTOM_METHOD)+= custom_method.o obj-$(CONFIG_ACPI_BGRT) += bgrt.o # processor has its own "processor." module_param namespace -processor-y := processor_driver.o processor_throttling.o -processor-y += processor_idle.o processor_thermal.o +processor-y := processor_driver.o processor_idle.o +processor-$(CONFIG_ACPI_CPU_FREQ_PSS) += processor_throttling.o \ + processor_thermal.o processor-$(CONFIG_CPU_FREQ) += processor_perflib.o obj-$(CONFIG_ACPI_PROCESSOR_AGGREGATOR) += acpi_pad.o diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c index cc820d8..3fea539 100644 --- a/drivers/acpi/processor_driver.c +++ b/drivers/acpi/processor_driver.c @@ -163,34 +163,24 @@ static struct notifier_block acpi_cpu_notifier = { .notifier_call = acpi_cpu_soft_notify, }; -static int __acpi_processor_start(struct acpi_device *device) +#ifdef CONFIG_ACPI_CPU_FREQ_PSS +static int acpi_pss_perf_init(struct acpi_processor *pr, + struct acpi_device *device) { - struct acpi_processor *pr = acpi_driver_data(device); - acpi_status status; int result = 0; - if (!pr) - return -ENODEV; - - if (pr->flags.need_hotplug_init) - return 0; - -#ifdef CONFIG_CPU_FREQ acpi_processor_ppc_has_changed(pr, 0); -#endif + acpi_processor_get_throttling_info(pr); if (pr->flags.throttling) pr->flags.limit = 1; - if (!cpuidle_get_driver() || cpuidle_get_driver() == &acpi_idle_driver) - acpi_processor_power_init(pr); - pr->cdev = thermal_cooling_device_register("Processor", device, &processor_cooling_ops); if (IS_ERR(pr->cdev)) { result = PTR_ERR(pr->cdev); - goto err_power_exit; + return result; } dev_dbg(&device->dev, "registered as cooling_device%d\n", @@ -204,6 +194,7 @@ static int __acpi_processor_start(struct acpi_device *device) "Failed to create sysfs link 'thermal_cooling'\n"); goto err_thermal_unregister; } + result = sysfs_create_link(&pr->cdev->device.kobj, &device->dev.kobj, "device"); @@ -213,17 +204,61 @@ static int __acpi_processor_start(struct acpi_device *device) goto err_remove_sysfs_thermal; } - status = acpi_install_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, - acpi_processor_notify, device); - if (ACPI_SUCCESS(status)) - return 0; - sysfs_remove_link(&pr->cdev->device.kobj, "device"); err_remove_sysfs_thermal: sysfs_remove_link(&device->dev.kobj, "thermal_cooling"); err_thermal_unregister: thermal_cooling_device_unregister(pr->cdev); - err_power_exit: + + return result; +} + +static void acpi_pss_perf_exit(struct acpi_processor *pr, + struct acpi_device *device) +{ + if (pr->cdev) { + sysfs_remove_link(&device->dev.kobj, "thermal_cooling"); + sysfs_remove_link(&pr->cdev->device.kobj, "device"); + thermal_cooling_device_unregister(pr->cdev); + pr->cdev = NULL; + } +} +#else +static inline int acpi_pss_perf_init(struct acpi_processor *pr, + struct acpi_device *device) +{ + return 0; +} + +static inline void acpi_pss_perf_exit(struct acpi_processor *pr, + struct acpi_device *device) {} +#endif /* CONFIG_ACPI_CPU_FREQ_PSS */ + +static int __acpi_processor_start(struct acpi_device *device) +{ + struct acpi_processor *pr = acpi_driver_data(device); + acpi_status status; + int result = 0; + + if (!pr) + return -ENODEV; + + if (pr->flags.need_hotplug_init) + return 0; + + if (!cpuidle_get_driver() || cpuidle_get_driver() == &acpi_idle_driver) + acpi_processor_power_init(pr); + + result = acpi_pss_perf_init(pr, device); + if (result) + goto err_power_exit; + + status = acpi_install_notify_handler(device->handle, ACPI_DEVICE_NOTIFY, + acpi_processor_notify, device); + if (ACPI_SUCCESS(status)) + return 0; + +err_power_exit: acpi_processor_power_exit(pr); return result; } @@ -252,15 +287,10 @@ static int acpi_processor_stop(struct device *dev) pr = acpi_driver_data(device); if (!pr) return 0; - acpi_processor_power_exit(pr); - if (pr->cdev) { - sysfs_remove_link(&device->dev.kobj, "thermal_cooling"); - sysfs_remove_link(&pr->cdev->device.kobj, "device"); - thermal_cooling_device_unregister(pr->cdev); - pr->cdev = NULL; - } + acpi_pss_perf_exit(pr, device); + return 0; } diff --git a/include/acpi/processor.h b/include/acpi/processor.h index 4188a4d..b6c9178 100644 --- a/include/acpi/processor.h +++ b/include/acpi/processor.h @@ -318,6 +318,7 @@ int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id); void acpi_processor_set_pdc(acpi_handle handle); /* in processor_throttling.c */ +#ifdef CONFIG_ACPI_CPU_FREQ_PSS int acpi_processor_tstate_has_changed(struct acpi_processor *pr); int acpi_processor_get_throttling_info(struct acpi_processor *pr); extern int acpi_processor_set_throttling(struct acpi_processor *pr, @@ -330,6 +331,29 @@ extern void acpi_processor_reevaluate_tstate(struct acpi_processor *pr, unsigned long action); extern const struct file_operations acpi_processor_throttling_fops; extern void acpi_processor_throttling_init(void); +#else +static inline int acpi_processor_tstate_has_changed(struct acpi_processor *pr) +{ + return 0; +} + +static inline int acpi_processor_get_throttling_info(struct acpi_processor *pr) +{ + return -ENODEV; +} + +static inline int acpi_processor_set_throttling(struct acpi_processor *pr, + int state, bool force) +{ + return -ENODEV; +} + +static inline void acpi_processor_reevaluate_tstate(struct acpi_processor *pr, + unsigned long action) {} + +static inline void acpi_processor_throttling_init(void) {} +#endif /* CONFIG_ACPI_CPU_FREQ_PSS */ + /* in processor_idle.c */ int acpi_processor_power_init(struct acpi_processor *pr); int acpi_processor_power_exit(struct acpi_processor *pr); @@ -348,7 +372,7 @@ static inline void acpi_processor_syscore_exit(void) {} /* in processor_thermal.c */ int acpi_processor_get_limit_info(struct acpi_processor *pr); extern const struct thermal_cooling_device_ops processor_cooling_ops; -#ifdef CONFIG_CPU_FREQ +#if defined(CONFIG_ACPI_CPU_FREQ_PSS) & defined(CONFIG_CPU_FREQ) void acpi_thermal_cpufreq_init(void); void acpi_thermal_cpufreq_exit(void); #else @@ -360,6 +384,6 @@ static inline void acpi_thermal_cpufreq_exit(void) { return; } -#endif +#endif /* CONFIG_ACPI_CPU_FREQ_PSS */ #endif -- cgit v0.10.2 From 5f05586c609dfc737e2e00c757a51c7dbb415e51 Mon Sep 17 00:00:00 2001 From: Ashwin Chaugule Date: Wed, 5 Aug 2015 09:40:26 -0400 Subject: ACPI: Decouple ACPI idle and ACPI processor drivers This patch introduces a new Kconfig symbol, ACPI_PROCESSOR_IDLE, which is auto selected by architectures which support the ACPI based C states for CPU Idle management. The processor_idle driver in its present form contains declarations specific to X86 and IA64. Since there are no reasonable defaults for other architectures e.g. ARM64, the driver is selected only for X86 or IA64. This helps in decoupling the ACPI processor_driver from the ACPI processor_idle driver which is useful for the upcoming alternative patchwork for controlling CPU Performance (CPPC) and CPU Idle (LPI). Signed-off-by: Ashwin Chaugule Signed-off-by: Rafael J. Wysocki diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index d6e2a86..54e9729 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -193,10 +193,14 @@ config ACPI_CPU_FREQ_PSS bool select THERMAL +config ACPI_PROCESSOR_IDLE + bool + select CPU_IDLE + config ACPI_PROCESSOR tristate "Processor" depends on X86 || IA64 - select CPU_IDLE + select ACPI_PROCESSOR_IDLE select ACPI_CPU_FREQ_PSS default y help diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index 7e97aef..3ea59ae 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -80,7 +80,8 @@ obj-$(CONFIG_ACPI_CUSTOM_METHOD)+= custom_method.o obj-$(CONFIG_ACPI_BGRT) += bgrt.o # processor has its own "processor." module_param namespace -processor-y := processor_driver.o processor_idle.o +processor-y := processor_driver.o +processor-$(CONFIG_ACPI_PROCESSOR_IDLE) += processor_idle.o processor-$(CONFIG_ACPI_CPU_FREQ_PSS) += processor_throttling.o \ processor_thermal.o processor-$(CONFIG_CPU_FREQ) += processor_perflib.o diff --git a/include/acpi/processor.h b/include/acpi/processor.h index b6c9178..2c4e7a9 100644 --- a/include/acpi/processor.h +++ b/include/acpi/processor.h @@ -355,13 +355,35 @@ static inline void acpi_processor_throttling_init(void) {} #endif /* CONFIG_ACPI_CPU_FREQ_PSS */ /* in processor_idle.c */ +extern struct cpuidle_driver acpi_idle_driver; +#ifdef CONFIG_ACPI_PROCESSOR_IDLE int acpi_processor_power_init(struct acpi_processor *pr); int acpi_processor_power_exit(struct acpi_processor *pr); int acpi_processor_cst_has_changed(struct acpi_processor *pr); int acpi_processor_hotplug(struct acpi_processor *pr); -extern struct cpuidle_driver acpi_idle_driver; +#else +static inline int acpi_processor_power_init(struct acpi_processor *pr) +{ + return -ENODEV; +} + +static inline int acpi_processor_power_exit(struct acpi_processor *pr) +{ + return -ENODEV; +} + +static inline int acpi_processor_cst_has_changed(struct acpi_processor *pr) +{ + return -ENODEV; +} + +static inline int acpi_processor_hotplug(struct acpi_processor *pr) +{ + return -ENODEV; +} +#endif /* CONFIG_ACPI_PROCESSOR_IDLE */ -#ifdef CONFIG_PM_SLEEP +#if defined(CONFIG_PM_SLEEP) & defined(CONFIG_ACPI_PROCESSOR_IDLE) void acpi_processor_syscore_init(void); void acpi_processor_syscore_exit(void); #else -- cgit v0.10.2 From b6fc6072b1268a0025850cd9d3dce25a7be0158d Mon Sep 17 00:00:00 2001 From: Ashwin Chaugule Date: Wed, 5 Aug 2015 09:40:31 -0400 Subject: PCC: Disable compilation by default PCC is made selectable only by clients which use it. e.g. CPPC Default it to disabled so that it is not included accidentally on platforms which dont use it. Signed-off-by: Ashwin Chaugule Reviewed-by: Al Stone Signed-off-by: Rafael J. Wysocki diff --git a/drivers/mailbox/Kconfig b/drivers/mailbox/Kconfig index e269f08..bbec500 100644 --- a/drivers/mailbox/Kconfig +++ b/drivers/mailbox/Kconfig @@ -46,6 +46,7 @@ config OMAP_MBOX_KFIFO_SIZE config PCC bool "Platform Communication Channel Driver" depends on ACPI + default n help ACPI 5.0+ spec defines a generic mode of communication between the OS and a platform such as the BMC. This medium -- cgit v0.10.2