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2014-10-15Merge tag 'for-v3.18' of git://git.infradead.org/battery-2.6Linus Torvalds20-144/+1429
Pull power supply and reset updates from Sebastian Reichel: - Initial support for the following chips * max77836 (charger) * max14577 (charger) * bq27742 (battery gauge) * ltc2952 (poweroff) * stih416 (restart) * syscon-reboot (restart) * gpio-restart (restart) - cleanup of power supply core - misc fixes in power supply and reset drivers * tag 'for-v3.18' of git://git.infradead.org/battery-2.6: (48 commits) power: ab8500_fg: Fix build warning Documentation: charger: max14577: Update the date of introducing ABI power: reset: corrections for simple syscon reboot driver Documentation: power: reset: Add documentation for generic SYSCON reboot driver power: reset: Add generic SYSCON register mapped reset bq27x00_battery: Fix flag reading for bq27742 power: reset: use restart_notifier mechanism for msm-poweroff power: Add simple gpio-restart driver power: reset: st: Provide DT bindings for ST's Power Reset driver power: reset: Add restart functionality for STiH41x platforms power: charger-manager: Fix NULL pointer exception with missing cm-fuel-gauge power: max14577: Fix circular config SYSFS dependency power: gpio-charger: do not use gpio value directly power: max8925: Use of_get_child_by_name power: max8925: Fix NULL ptr dereference on memory allocation failure bq27x00_battery: Add support to bq27742 Documentation: charger: max14577: Document exported sysfs entry devicetree: mfd: max14577: Add device tree bindings document power: max17040: Add ID for MAX77836 Fuel Gauge block charger: max14577: Configure battery-dependent settings from DTS and sysfs ... Conflicts: drivers/power/reset/Kconfig drivers/power/reset/Makefile
2014-10-10Merge tag 'restart-handler-for-v3.18' of ↵Linus Torvalds1-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull restart handler infrastructure from Guenter Roeck: "This series was supposed to be pulled through various trees using it, and I did not plan to send a separate pull request. As it turns out, the pinctrl tree did not merge with it, is now upstream, and uses it, meaning there are now build failures. Please pull this series directly to fix those build failures" * tag 'restart-handler-for-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: arm/arm64: unexport restart handlers watchdog: sunxi: register restart handler with kernel restart handler watchdog: alim7101: register restart handler with kernel restart handler watchdog: moxart: register restart handler with kernel restart handler arm: support restart through restart handler call chain arm64: support restart through restart handler call chain power/restart: call machine_restart instead of arm_pm_restart kernel: add support for kernel restart handler call chain
2014-10-09Merge tag 'pm+acpi-3.18-rc1' of ↵Linus Torvalds3-0/+360
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI and power management updates from Rafael Wysocki: "Features-wise, to me the most important this time is a rework of wakeup interrupts handling in the core that makes them work consistently across all of the available sleep states, including suspend-to-idle. Many thanks to Thomas Gleixner for his help with this work. Second is an update of the generic PM domains code that has been in need of some care for quite a while. Unused code is being removed, DT support is being added and domains are now going to be attached to devices in bus type code in analogy with the ACPI PM domain. The majority of work here was done by Ulf Hansson who also has been the most active developer this time. Apart from this we have a traditional ACPICA update, this time to upstream version 20140828 and a few ACPI wakeup interrupts handling patches on top of the general rework mentioned above. There also are several cpufreq commits including renaming the cpufreq-cpu0 driver to cpufreq-dt, as this is what implements generic DT-based cpufreq support, and a new DT-based idle states infrastructure for cpuidle. In addition to that, the ACPI LPSS driver is updated, ACPI support for Apple machines is improved, a few bugs are fixed and a few cleanups are made all over. Finally, the Adaptive Voltage Scaling (AVS) subsystem now has a tree maintained by Kevin Hilman that will be merged through the PM tree. Numbers-wise, the generic PM domains update takes the lead this time with 32 non-merge commits, second is cpufreq (15 commits) and the 3rd place goes to the wakeup interrupts handling rework (13 commits). Specifics: - Rework the handling of wakeup IRQs by the IRQ core such that all of them will be switched over to "wakeup" mode in suspend_device_irqs() and in that mode the first interrupt will abort system suspend in progress or wake up the system if already in suspend-to-idle (or equivalent) without executing any interrupt handlers. Among other things that eliminates the wakeup-related motivation to use the IRQF_NO_SUSPEND interrupt flag with interrupts which don't really need it and should not use it (Thomas Gleixner and Rafael Wysocki) - Switch over ACPI to handling wakeup interrupts with the help of the new mechanism introduced by the above IRQ core rework (Rafael Wysocki) - Rework the core generic PM domains code to eliminate code that's not used, add DT support and add a generic mechanism by which devices can be added to PM domains automatically during enumeration (Ulf Hansson, Geert Uytterhoeven and Tomasz Figa). - Add debugfs-based mechanics for debugging generic PM domains (Maciej Matraszek). - ACPICA update to upstream version 20140828. Included are updates related to the SRAT and GTDT tables and the _PSx methods are in the METHOD_NAME list now (Bob Moore and Hanjun Guo). - Add _OSI("Darwin") support to the ACPI core (unfortunately, that can't really be done in a straightforward way) to prevent Thunderbolt from being turned off on Apple systems after boot (or after resume from system suspend) and rework the ACPI Smart Battery Subsystem (SBS) driver to work correctly with Apple platforms (Matthew Garrett and Andreas Noever). - ACPI LPSS (Low-Power Subsystem) driver update cleaning up the code, adding support for 133MHz I2C source clock on Intel Baytrail to it and making it avoid using UART RTS override with Auto Flow Control (Heikki Krogerus). - ACPI backlight updates removing the video_set_use_native_backlight quirk which is not necessary any more, making the code check the list of output devices returned by the _DOD method to avoid creating acpi_video interfaces that won't work and adding a quirk for Lenovo Ideapad Z570 (Hans de Goede, Aaron Lu and Stepan Bujnak) - New Win8 ACPI OSI quirks for some Dell laptops (Edward Lin) - Assorted ACPI code cleanups (Fabian Frederick, Rasmus Villemoes, Sudip Mukherjee, Yijing Wang, and Zhang Rui) - cpufreq core updates and cleanups (Viresh Kumar, Preeti U Murthy, Rasmus Villemoes) - cpufreq driver updates: cpufreq-cpu0/cpufreq-dt (driver name change among other things), ppc-corenet, powernv (Viresh Kumar, Preeti U Murthy, Shilpasri G Bhat, Lucas Stach) - cpuidle support for DT-based idle states infrastructure, new ARM64 cpuidle driver, cpuidle core cleanups (Lorenzo Pieralisi, Rasmus Villemoes) - ARM big.LITTLE cpuidle driver updates: support for DT-based initialization and Exynos5800 compatible string (Lorenzo Pieralisi, Kevin Hilman) - Rework of the test_suspend kernel command line argument and a new trace event for console resume (Srinivas Pandruvada, Todd E Brandt) - Second attempt to optimize swsusp_free() (hibernation core) to make it avoid going through all PFNs which may be way too slow on some systems (Joerg Roedel) - devfreq updates (Paul Bolle, Punit Agrawal, Ãrjan Eide). - rockchip-io Adaptive Voltage Scaling (AVS) driver and AVS entry update in MAINTAINERS (Heiko Stübner, Kevin Hilman) - PM core fix related to clock management (Geert Uytterhoeven) - PM core's sysfs code cleanup (Johannes Berg)" * tag 'pm+acpi-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (105 commits) ACPI / fan: printk replacement PM / clk: Fix crash in clocks management code if !CONFIG_PM_RUNTIME PM / Domains: Rename cpu_data to cpuidle_data cpufreq: cpufreq-dt: fix potential double put of cpu OF node cpufreq: cpu0: rename driver and internals to 'cpufreq_dt' PM / hibernate: Iterate over set bits instead of PFNs in swsusp_free() cpufreq: ppc-corenet: remove duplicate update of cpu_data ACPI / sleep: Rework the handling of ACPI GPE wakeup from suspend-to-idle PM / sleep: Rename platform suspend/resume functions in suspend.c PM / sleep: Export dpm_suspend_late/noirq() and dpm_resume_early/noirq() ACPICA: Introduce acpi_enable_all_wakeup_gpes() ACPICA: Clear all non-wakeup GPEs in acpi_hw_enable_wakeup_gpe_block() ACPI / video: check _DOD list when creating backlight devices PM / Domains: Move dev_pm_domain_attach|detach() to pm_domain.h cpufreq: Replace strnicmp with strncasecmp cpufreq: powernv: Set the cpus to nominal frequency during reboot/kexec cpufreq: powernv: Set the pstate of the last hotplugged out cpu in policy->cpus to minimum cpufreq: Allow stop CPU callback to be used by all cpufreq drivers PM / devfreq: exynos: Enable building exynos PPMU as module PM / devfreq: Export helper functions for drivers ...
2014-10-05power: ab8500_fg: Fix build warningGuenter Roeck1-4/+5
Fix drivers/power/ab8500_fg.c: In function 'ab8500_fg_probe': drivers/power/ab8500_fg.c:2989:27: warning: 'i' may be used uninitialized in this function drivers/power/ab8500_fg.c:2972:15: note: 'i' was declared here which actually points to a real bug. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-10-03power: reset: corrections for simple syscon reboot driverFeng Kan2-17/+13
This patch is to fix some bugs in reboot driver. Which includes auto selection of the MFD_SYSCON for the driver, use of container to locate restart handler, correction of the count down failure timer and ordering of the header file. Signed-off-by: Feng Kan <fkan@apm.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> [ sre: return err instead of 0 in syscon_reboot_probe() ] Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-10-01power: reset: Add generic SYSCON register mapped resetFeng Kan3-0/+102
Add a generic SYSCON register mapped reset mechanism. Signed-off-by: Feng Kan <fkan@apm.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-10-01bq27x00_battery: Fix flag reading for bq27742Puthikorn Voravootivat1-6/+7
This patch fix the following issues. - Flag for bq27742 is 2 bytes contracy to 1 byte for older hardware - Don't read FLAG_CI as bq27742 does not have it - Use Battery full capacity register as last measure discharge Signed-off-by: Puthikorn Voravootivat <puthik@chromium.org> Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-26power: reset: use restart_notifier mechanism for msm-poweroffPramod Gurav1-6/+14
This change replaces use of arm_pm_restart with recently introduced reset mechanism in Linux kernel called restart_notifier. Choosing priority 128, which is default priority, as according to documentation, this mechanism is sufficient to restart the entire system. Cc: Guenter Roeck <linux@roeck-us.net> Cc: Josh Cartwright <joshc@codeaurora.org> Cc: Sebastian Reichel <sre@kernel.org> Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: linux-pm@vger.kernel.org Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Pramod Gurav <pramod.gurav@smartplayin.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-26power: Add simple gpio-restart driverDavid Riley3-0/+158
This driver registers a restart handler to set a GPIO line high/low to reset a board based on devicetree bindings. Signed-off-by: David Riley <davidriley@chromium.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-26Merge tag 'tags/restart-handler-for-v3.18' into nextSebastian Reichel1-1/+2
Immutable branch with restart handler patches for v3.18
2014-09-26power: reset: Add restart functionality for STiH41x platformsLee Jones3-0/+158
This driver adds the restart functionality for STiH415 and STiH416 platforms from STMicroelectronics. This driver registers an arm_pm_restart function to reset the platform. Signed-off-by: Christophe Kerello <christophe.kerello@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-26power: charger-manager: Fix NULL pointer exception with missing cm-fuel-gaugeKrzysztof Kozlowski1-0/+5
NULL pointer exception happens during charger-manager probe if 'cm-fuel-gauge' property is not present. [ 2.448536] Unable to handle kernel NULL pointer dereference at virtual address 00000000 [ 2.456572] pgd = c0004000 [ 2.459217] [00000000] *pgd=00000000 [ 2.462759] Internal error: Oops: 5 [#1] PREEMPT SMP ARM [ 2.468047] Modules linked in: [ 2.471089] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.17.0-rc6-00251-ge44cf96cd525-dirty #969 [ 2.479765] task: ea890000 ti: ea87a000 task.ti: ea87a000 [ 2.485161] PC is at strcmp+0x4/0x30 [ 2.488719] LR is at power_supply_match_device_by_name+0x10/0x1c [ 2.494695] pc : [<c01f4220>] lr : [<c030fe38>] psr: a0000113 [ 2.494695] sp : ea87bde0 ip : 00000000 fp : eaa97010 [ 2.506150] r10: 00000004 r9 : ea97269c r8 : ea3bbfd0 [ 2.511360] r7 : eaa97000 r6 : c030fe28 r5 : 00000000 r4 : ea3b0000 [ 2.517869] r3 : 0000006d r2 : 00000000 r1 : 00000000 r0 : c057c195 [ 2.524381] Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel [ 2.531671] Control: 10c5387d Table: 4000404a DAC: 00000015 [ 2.537399] Process swapper/0 (pid: 1, stack limit = 0xea87a240) [ 2.543388] Stack: (0xea87bde0 to 0xea87c000) [ 2.547733] bde0: ea3b0210 c026b1c8 eaa97010 eaa97000 eaa97010 eabb60a8 ea3b0210 00000000 [ 2.555891] be00: 00000008 ea2db210 ea1a3410 c030fee0 ea3bbf90 c03138fc c068969c c013526c [ 2.564050] be20: eaa040c0 00000000 c068969c 00000000 eaa040c0 ea2da300 00000002 00000000 [ 2.572208] be40: 00000001 ea2da3c0 00000000 00000001 00000000 eaa97010 c068969c 00000000 [ 2.580367] be60: 00000000 c068969c 00000000 00000002 00000000 c026b71c c026b6f0 eaa97010 [ 2.588527] be80: c0e82530 c026a330 00000000 eaa97010 c068969c eaa97044 00000000 c061df50 [ 2.596686] bea0: ea87a000 c026a4dc 00000000 c068969c c026a448 c0268b5c ea8054a8 eaa8fd50 [ 2.604845] bec0: c068969c ea2db180 c06801f8 c0269b18 c0590f68 c068969c c0656c98 c068969c [ 2.613004] bee0: c0656c98 ea3bbe40 c06988c0 c026aaf0 00000000 c0656c98 c0656c98 c00088a4 [ 2.621163] bf00: 00000000 c0055f48 00000000 00000004 00000000 ea890000 c05dbc54 c062c178 [ 2.629323] bf20: c0603518 c005f674 00000001 ea87a000 eb7ff83b c0476440 00000091 c003d41c [ 2.637482] bf40: c05db344 00000007 eb7ff858 00000007 c065a76c c0647d24 00000007 c062c170 [ 2.645642] bf60: c06988c0 00000091 c062c178 c0603518 00000000 c0603cc4 00000007 00000007 [ 2.653801] bf80: c0603518 c0c0c0c0 00000000 c0453948 00000000 00000000 00000000 00000000 [ 2.661959] bfa0: 00000000 c0453950 00000000 c000e728 00000000 00000000 00000000 00000000 [ 2.670118] bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 2.678277] bfe0: 00000000 00000000 00000000 00000000 00000013 00000000 c0c0c0c0 c0c0c0c0 [ 2.686454] [<c01f4220>] (strcmp) from [<c030fe38>] (power_supply_match_device_by_name+0x10/0x1c) [ 2.695303] [<c030fe38>] (power_supply_match_device_by_name) from [<c026b1c8>] (class_find_device+0x54/0xac) [ 2.705106] [<c026b1c8>] (class_find_device) from [<c030fee0>] (power_supply_get_by_name+0x1c/0x30) [ 2.714137] [<c030fee0>] (power_supply_get_by_name) from [<c03138fc>] (charger_manager_probe+0x3d8/0xe58) [ 2.723683] [<c03138fc>] (charger_manager_probe) from [<c026b71c>] (platform_drv_probe+0x2c/0x5c) [ 2.732532] [<c026b71c>] (platform_drv_probe) from [<c026a330>] (driver_probe_device+0x10c/0x224) [ 2.741384] [<c026a330>] (driver_probe_device) from [<c026a4dc>] (__driver_attach+0x94/0x98) [ 2.749813] [<c026a4dc>] (__driver_attach) from [<c0268b5c>] (bus_for_each_dev+0x54/0x88) [ 2.757969] [<c0268b5c>] (bus_for_each_dev) from [<c0269b18>] (bus_add_driver+0xd4/0x1d0) [ 2.766123] [<c0269b18>] (bus_add_driver) from [<c026aaf0>] (driver_register+0x78/0xf4) [ 2.774110] [<c026aaf0>] (driver_register) from [<c00088a4>] (do_one_initcall+0x80/0x1bc) [ 2.782276] [<c00088a4>] (do_one_initcall) from [<c0603cc4>] (kernel_init_freeable+0x100/0x1cc) [ 2.790952] [<c0603cc4>] (kernel_init_freeable) from [<c0453950>] (kernel_init+0x8/0xec) [ 2.799029] [<c0453950>] (kernel_init) from [<c000e728>] (ret_from_fork+0x14/0x2c) [ 2.806572] Code: e12fff1e e1a03000 eafffff7 e4d03001 (e4d12001) [ 2.812832] ---[ end trace 7f12556111b9e7ef ]--- Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: <stable@vger.kernel.org> Fixes: 856ee6115e2d ("charger-manager: Support deivce tree in charger manager driver") Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-26power/restart: call machine_restart instead of arm_pm_restartGuenter Roeck1-1/+2
machine_restart is supported on non-ARM platforms, and and ultimately calls arm_pm_restart, so dont call arm_pm_restart directly but use the more generic function. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Heiko Stuebner <heiko@sntech.de> Cc: Russell King <linux@arm.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jonas Jensen <jonas.jensen@gmail.com> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Tomasz Figa <t.figa@samsung.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Wim Van Sebroeck <wim@iguana.be> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2014-09-26power: reset: driver for the Versatile syscon rebootLinus Walleij3-0/+121
This driver enabled us to drive the reboot of the Versatile family of ARM reference boards. Even though only the RealView boards are supported initially, these boards all have the same procedure for reboot: - Write a magic value into an unlocking register - Write another magic value into a reset control register The driver will be reusable for Versatile and possibly also the Integrator family of reference boards. Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Acked-By: Sebastian Reichel <sre@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2014-09-25PM / AVS: rockchip-io: add driver handling Rockchip io domainsHeiko Stübner3-0/+360
IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-25power: max14577: Fix circular config SYSFS dependencyKrzysztof Kozlowski1-1/+1
Make the max14577 charger driver depending on SYSFS instead selecting it. This fixes warning on x86_64 with allmodconfig: scripts/kconfig/conf --allmodconfig Kconfig fs/sysfs/Kconfig:1:error: recursive dependency detected! fs/sysfs/Kconfig:1: symbol SYSFS is selected by CHARGER_MAX14577 drivers/power/Kconfig:327: symbol CHARGER_MAX14577 depends on POWER_SUPPLY drivers/power/Kconfig:1: symbol POWER_SUPPLY is selected by HID_SONY drivers/hid/Kconfig:638: symbol HID_SONY depends on NEW_LEDS drivers/leds/Kconfig:8: symbol NEW_LEDS is selected by SENSORS_APPLESMC drivers/hwmon/Kconfig:299: symbol SENSORS_APPLESMC depends on HWMON drivers/hwmon/Kconfig:5: symbol HWMON is selected by EEEPC_LAPTOP drivers/platform/x86/Kconfig:496: symbol EEEPC_LAPTOP depends on HOTPLUG_PCI drivers/pci/hotplug/Kconfig:5: symbol HOTPLUG_PCI depends on SYSFS Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-25Merge tag 'tags/mfd-power-charger-regulator-v3.18' into nextSebastian Reichel3-37/+341
Immutable branch between MFD, Power, Charger and Regulator for v3.18
2014-09-25power: gpio-charger: do not use gpio value directlyHeiko Stuebner1-1/+1
Some gpio implementations return interesting values for gpio_get_value when the value is not 0 - as seen on a imx6sl board. Therefore do not use the value returned from gpio_get_value directly but simply check for 0 or not 0. Signed-off-by: Heiko Stuebner <heiko.stuebner@bq.com> Reviewed-by: Doug Anderson <dianders@chromium.org> Tested-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-25power: max8925: Use of_get_child_by_nameKrzysztof Kozlowski1-1/+1
Use of_get_child_by_name to obtain reference to charger node instead of of_find_node_by_name which can walk outside of the parent node. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-25power: max8925: Fix NULL ptr dereference on memory allocation failureKrzysztof Kozlowski1-1/+4
Check the return value of devm_kzalloc() to fix possible NULL pointer dereference and properly exit the probe() on memory allocation failure. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-25bq27x00_battery: Add support to bq27742Puthikorn Voravootivat1-7/+45
Add support to bq27742 in bq27x00 driver. bq27742 register addresses are mostly mostly the same as bq27500 addresses with minor differences. Signed-off-by: Puthikorn Voravootivat <puthik@chromium.org> Reviewed-by: Gwendal Grignou <gwendal@chromium.org> Reviewed-by: Rhyland Klein <rklein@nvidia.com> Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-24power: max17040: Add ID for MAX77836 Fuel Gauge blockKrzysztof Kozlowski1-1/+2
MAX77836 has the same Fuel Gauge as MAX17040/17048. The max17040 driver can be safely re-used. The patch adds MAX77836 device to the array of i2c_device_id. Additionally it removes the id associated with MAX17040 device as the value is not used. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-24charger: max14577: Configure battery-dependent settings from DTS and sysfsKrzysztof Kozlowski2-28/+284
Remove hard-coded values for: - Fast Charge current, - End Of Charge current, - Fast Charge timer, - Overvoltage Protection Threshold, - Battery Constant Voltage, and use DTS or sysfs to configure them. This allows using the max14577 charger driver with different batteries. Now the charger driver requires valid configuration data from DTS. In case of wrong configuration data it fails during probe. The fast charge timer is configured through sysfs entry. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-24charger: max14577: Add support for MAX77836 chargerKrzysztof Kozlowski2-17/+64
Add support for MAX77836 charger to the max14577 driver. The MAX77836 charger is almost the same as 14577 model except: - No dead-battery detection; - Support for special charger (like in MAX77693); - Support for DX over-voltage protection (like in MAX77693); - Lower values of charging current (two times lower current for slow/fast charge, much lower EOC current); - Slightly different values in ChgTyp field of STATUS2 register. On MAX14577 0x6 is reserved and 0x7 dead battery. On the MAX77836 the 0x6 means special charger and 0x7 is reserved. Regardless of these differences the driver maps them to one enum max14577_muic_charger_type. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-16power: reset: add LTC2952 poweroff driverRené Moll3-0/+394
This adds a driver for the LTC2952, an external power control chip, which signals the OS to shut down. Additionally this driver lets the kernel power down the board. Signed-off-by: René Moll <rene.moll@xsens.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-16power_supply: Don't iterate over devices to return -EPROBE_DEFERViresh Kumar1-13/+0
This piece of code was added so that we return -EPROBE_DEFER when no devices are registered. But even if class_for_each_device() returns 0, we are going to return -EPROBE_DEFER only. And so this code isn't required at all. Remove it. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-16power-supply: Avoid unnecessary 'goto' statementsViresh Kumar2-17/+5
Using 'goto' statements for freeing resources on failures is a good choice as it makes code very clean, and reduces the chances of human errors. Though in most cases compiler may take care of this. But adding unnecessary 'goto' statements wouldn't make anything better. Code becomes less readable actually. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-16power-supply: Check for failures only when we can failViresh Kumar1-10/+11
In power_supply_show_property() routine, we call ->get_property() conditionally and should check for failure in that case only. There is no point comparing 'ret' for errors when 'ret' is surely zero. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-16power-supply: Use PTR_ERR_OR_ZERO() routineViresh Kumar1-6/+2
At multiple places we are doing exactly what PTR_ERR_OR_ZERO() does. And so that routine can be reused instead of increasing lines of code here. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-16power-supply: Mark 'if' blocks in power_supply_changed_work() with 'likely'Viresh Kumar1-5/+13
The 'if' statements in power_supply_changed_work() are mostly there for taking care of races and normally they will always evaluate to true. Optimize them for fast execution with 'likely' statements. Also there is need to have better comments in code to mention about the races clearly. Get them in place. Cc: Zoran Markovic <zrn.markovic@gmail.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-16power-supply: Drop useless 'if (ret.intval)' statementsViresh Kumar1-9/+5
There is no need to check the value of ret.intval before returning it, as we will be returning zero explicitly when ret.intval is zero. So essentially we will end up returning value of ret.intval as it is. Drop the unnecessary 'if' statements. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-16power-supply: Don't return -EINVAL from __power_supply_find_supply_from_node()Viresh Kumar1-7/+11
We need to stop 'class_for_each_device' loop when a supply matches with the of-node. In order to achieve this we currently return -EINVAL from __power_supply_populate_supplied_from() on successful match. class_for_each_device() is free to return similar errors in other cases as well and so the choice of return value here isn't particularly great. This commit isn't removing the Hack but making it more elegant by returning '1' instead. Also power_supply_find_supply_from_node() can return errors other than -EPROBE_DEFER now if class_for_each_device() fails. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-16power-supply: Propagate error returned by power_supply_find_supply_from_node()Viresh Kumar1-2/+2
Callers of power_supply_find_supply_from_node(), i.e. power_supply_check_supplies(), must propagate the errors returned by it instead of returning their own. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-16power-supply: Rearrange code to remove duplicate linesViresh Kumar1-2/+2
of_node_put() was called twice in power_supply_check_supplies() whereas a single call will also work. Rearrange code a bit to make that feasible. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-16power-supply: Use 'break' instead of 'continue' to end loopViresh Kumar1-2/+2
In few routines, we need to end the do-while loop when no more "power-supplies" are available. Currently we are doing 'continue' which will make the 'while(np)' conditional statement run again. Skip this by doing a 'break' instead. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-16power-supply: Drop unnecessary typecastsViresh Kumar1-4/+4
Typecast from 'void *' to any other pointer type falls under implicit typecasts category and so doesn't require explicit typecasts. Drop them. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-16power-supply: Return early if "power-supplies" property isn't validViresh Kumar1-0/+4
If power-supply's DT node doesn't have a valid "power-supplies" entry, then power_supply_check_supplies() should return early instead of trying to allocate memory for "supplied_from" array. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-16power-supply: Don't over-allocate memory for "supplied-from" arrayViresh Kumar1-1/+1
In routine power_supply_check_supplies(), 'cnt' is counting the number of supplies passed in "power-supplies" field of a node. The value of 'cnt' will always be one more than the number of supplies after the do-while loop ends. And so we need to allocate memory for 'cnt - 1' char pointers. But we are allocating memory for 'cnt' instead. Fix this by not over-allocating memory. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-06power: charger-manager: Remove casting the return value which is a void pointerJingoo Han1-1/+1
Casting the return value which is a void pointer is redundant. The conversion from void pointer to any other pointer type is guaranteed by the C programming language. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-06power_supply: Add boot and calibration attributesRamakrishna Pallala1-0/+3
Usually PMIC's come with coulomb counting mechanism which can be used to implement a Fuel Gauginig solution in Software itself. One of key input to these SW Fuel Gauge solutioons is the boot up parameters like boot voltage and boot current. This patch adds the VOLTAGE_BOOT and CURRENT_BOOT power supply attributes to report bootup voltage and current. This patch also adds CALIBRATE power supply attribute which useful is for calibrating the battery/coulomb counter. Signed-off-by: Ramakrishna Pallala <ramakrishna.pallala@intel.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-06power: charger-manager: Check charging state right after completed ↵Chanwoo Choi1-0/+7
initialization This patch check the charging state after completed initialization of charger- manager and update current charging state. If charger-manager never check and update current charging state, charger-manager would have the mismatch issue between real state of cable connection and the charging state of charger-manager until first polling time of charger-manager. Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Myungjoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-06power: charger-manager: Fix checking of wrong return typeChanwoo Choi1-1/+1
This patch fix minor issue about checking wrong return type. The of_cm_parse_desc() return ERR_PTR(errnor number) when some error happen in this function. But, charger_manager_probe() has only checked whether desc is NULL or not. If of_cm_parse_desc() returns ERR_PTR(-ENOMEM), desc isn't NULL but desc is (void *)(-ENOMEM). Althouhg some error happen for parsing DT, charger_manager_probe() can't detect error of desc instance. Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Myungjoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-06power/reset: xgene-reset: Fix prototype of xgene_restart()Mark Brown1-1/+1
The xgene-reset driver uses xgene_restart() as arm_pm_restart() but that function should take an enum reset_type as the first argument rather than a char. Fix this; the paramter is not referenced in the implementation. Signed-off-by: Mark Brown <broonie@linaro.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-06sbs-battery: add min design voltage to sbs-batterySimon Que1-2/+8
sbs-battery has a max design voltage but not a min design voltage field. The SBS spec only has one design voltage: http://www.sbs-forum.org/specs/sbdat110.pdf Currently this is being used for max design voltage. This patch uses it for min design voltage as well. Signed-off-by: Simon Que <sque@chromium.org> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Todd Broch <tbroch@chromium.org> Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-06sbs-battery: export manufacturer and model name to sysfsCheng-Yi Chiang1-0/+115
This CL supports two power_supply_property items for smart battery: POWER_SUPPLY_PROP_MANUFACTURER and POWER_SUPPLY_PROP_MODEL_NAME such that battery information 'manufacturer' and 'model_name' can be exported to sysfs. Signed-off-by: Cheng-Yi Chiang <cychiang@chromium.org> Reviewed-by: Olof Johansson <olofj@chromium.org> Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-01power: reset: at91-poweroff: fix wakeup status register indexNicolas Ferre1-1/+1
The wakeup status is read from Shutdown Status Register and not the SHDW_CR which is the one at address 0. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-09-01ARM: at91/power/reset: fix Kconfig "depends on" directiveNicolas Ferre1-2/+2
MACH_AT91 doesn't exist so we can't "depend" on it. Fix the typo by using the proper ARCH_AT91 config option. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-08-25Merge tag 'at91-drivers-for-3.17' of ↵Nicolas Ferre4-8/+435
git://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux Pull AT91 reset, poweroff and ram drivers from Maxime Ripard: "This tag holds the various new drivers introduced to move code that used to be in mach-at91 over to the proper frameworks. These files are the reboot and poweroff code for all AT91 SoCs but the RM9200, and the ram controller driver is not doing much at the time, except for grabing the RAM clock in order to leave it always enabled." Conflicts: arch/arm/mach-at91/Kconfig
2014-08-08Merge tag 'soc-for-3.17' of ↵Linus Torvalds3-0/+74
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC platform changes from Olof Johansson: "This is the bulk of new SoC enablement and other platform changes for 3.17: - Samsung S5PV210 has been converted to DT and multiplatform - Clock drivers and bindings for some of the lower-end i.MX 1/2 platforms - Kirkwood, one of the popular Marvell platforms, is folded into the mvebu platform code, removing mach-kirkwood - Hwmod data for TI AM43xx and DRA7 platforms - More additions of Renesas shmobile platform support - Removal of plat-samsung contents that can be removed with S5PV210 being multiplatform/DT-enabled and the other two old platforms being removed New platforms (most with only basic support right now): - Hisilicon X5HD2 settop box chipset is introduced - Mediatek MT6589 (mobile chipset) is introduced - Broadcom BCM7xxx settop box chipset is introduced + as usual a lot other pieces all over the platform code" * tag 'soc-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (240 commits) ARM: hisi: remove smp from machine descriptor power: reset: move hisilicon reboot code ARM: dts: Add hix5hd2-dkb dts file. ARM: debug: Rename Hi3716 to HIX5HD2 ARM: hisi: enable hix5hd2 SoC ARM: hisi: add ARCH_HISI MAINTAINERS: add entry for Broadcom ARM STB architecture ARM: brcmstb: select GISB arbiter and interrupt drivers ARM: brcmstb: add infrastructure for ARM-based Broadcom STB SoCs ARM: configs: enable SMP in bcm_defconfig ARM: add SMP support for Broadcom mobile SoCs Documentation: arm: misc updates to Marvell EBU SoC status Documentation: arm: add URLs to public datasheets for the Marvell Armada XP SoC ARM: mvebu: fix build without platforms selected ARM: mvebu: add cpuidle support for Armada 38x ARM: mvebu: add cpuidle support for Armada 370 cpuidle: mvebu: add Armada 38x support cpuidle: mvebu: add Armada 370 support cpuidle: mvebu: rename the driver from armada-370-xp to mvebu-v7 ARM: mvebu: export the SCU address ...
2014-07-30power: reset: move hisilicon reboot codeHaojian Zhuang3-0/+74
Move reboot code from hisilicon platform driver into reset driver. Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org> Acked-by: Wei Xu <xuwei5@hisilicon.com> Signed-off-by: Olof Johansson <olof@lixom.net>
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 14:21:44 +0000