linux/drivers/w1, branch v4.7

w1: add ability to set (SRAM) and store (EEPROM) configuration for temp sensors like DS18B20

2016-05-01T21:37:49Z

Since many temperature sensors come "preconfigured" with a lower precision, people are stuck at that precision when running on a kernel based device (unlike the Dallas 1Wire library for e.g. Arduino, which supports writing the configuration/scratchpad). This patch adds write support for the scratchpad/precision registers via w1_slave sysfs. Signed-off-by: Ben Sen <0.x29a.0@gmail.com> Acked-by: Evgeniy Polyakov Signed-off-by: Greg Kroah-Hartman

w1: silence an uninitialized variable warning

2016-05-01T21:04:19Z

If kstrtoint() returns -ERANGE then "tmp" is uninitialized. Signed-off-by: Dan Carpenter Acked-by: Evgeniy Polaykov Signed-off-by: Greg Kroah-Hartman

w1: Spelling s/minmum/minimum/

2016-05-01T21:04:19Z

Signed-off-by: Geert Uytterhoeven Signed-off-by: Greg Kroah-Hartman

w1: enable active pullup for DS2482 by default

2016-05-01T21:04:19Z

This commit enables the active pullup (APU bit) by default for the DS2482 1-Wire master. >From the DS2482 datasheet: "The APU bit controls whether an active pullup (controlled slew-rate transistor) or a passive pullup (Rwpu resistor) will be used to drive a 1-Wire line from low to high. When APU = 0, active pullup is disabled (resistor mode). Active Pullup should always be selected unless there is only a single slave on the 1-Wire line." According to the module author, Ben Gardner: "It doesn't look like active pullup would cause any hurt if there is only a single slave." And my tests with multiple and single slaves on 1-Wire bus confirms that. This active pullup can be manually disabled using the introduced module parameter: active_pullup = 0 Signed-off-by: Greg Kroah-Hartman

w1: w1_process() is not freezable kthread

2016-02-12T03:23:28Z

w1_process() calls try_to_freeze(), but the thread doesn't mark itself freezable through set_freezable(), so the try_to_freeze() call is useless. Acked-by: Evgeniy Polyakov Signed-off-by: Jiri Kosina Signed-off-by: Greg Kroah-Hartman

omap_hdq: fix usecount handling

2016-02-08T22:57:30Z

hdq_usecount was set to zero after a successful read, so omap_hdq_put could not properly free resources which leads e.g. to increasing usecounts in lsmod output Signed-off-by: Andreas Kemnade Acked-by: Evgeniy Polyakov Reviewed-by: Vignesh R Signed-off-by: Greg Kroah-Hartman

Merge tag 'for-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply

2015-11-05T20:28:15Z

Pull power supply and reset updates from Sebastian Reichel: - new AXP20X USB Power driver - new Qualcomm SMBB driver - new TPS65217 Charger driver - BQ24257: add BQ24250/BQ24251 support - overhaul bq27x00 battery driver, rename to bq27xxx - misc fixes and cleanups * tag 'for-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (54 commits) power: bq27xxx_battery: Remove unneeded dependency in Kconfig power: bq27xxx_battery: move irq handler to i2c section power: bq27xxx_battery: fix platform probe twl4030_charger: add missing iio dependency power_supply: charger-manager: add missing of_node_put Documentation: power: bq24257: Document exported sysfs entries power: bq24257: Add various device-specific sysfs properties power: bq24257: Allow input current limit sysfs access power: bq24257: Add input DPM voltage threshold setting support power: bq24257: Add over voltage protection setting support power: bq24257: Add SW-based approach for Power Good determination power: bq24257: Allow manual setting of input current limit power: bq24257: Add bit definition for temp sense enable power: bq24257: Add basic support for bq24250/bq24251 dt: power: bq24257-charger: Cover additional devices power: bq24257: Simplify bq24257_power_supply_init() power: bq24257: Use managed power supply register power: bq24257: Streamline input current limit setup power: bq24257: Remove IRQ config through stat-gpios power: bq27xxx_battery: fix signedness bug in bq27xxx_battery_read_health() ...

W1: w1-gpio - switch to using dev_pm_ops

2015-10-18T04:45:05Z

Let's stop using legacy platform driver hooks for power management and switch to using the standard dev_pm_ops-based hooks. Also, instead of guarding PM methods with #ifdef CONFIG_PM annotate them as __maybe_unused as it provides better compile coverage. Signed-off-by: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman

w1: masters: omap_hdq: add support for 1-wire mode

2015-10-05T03:47:09Z

This patches makes following changes to omap_hdq driver - Enable 1-wire mode. - Implement w1_triplet callback to facilitate search rom procedure and auto detection of 1-wire slaves. - Proper enabling and disabling of interrupt. - Cleanups (formatting and return value checks). HDQ mode remains unchanged. Signed-off-by: Vignesh R Cc: Rob Herring Cc: Pawel Moll Cc: Mark Rutland Cc: Ian Campbell Cc: Kumar Gala Acked-by: Evgeniy Polyakov Cc: Jonathan Corbet CC: Tony Lindgren Cc: Vignesh R Cc: NeilBrown Cc: Fabian Frederick Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman

drivers/w1/w1_int.c: call put_device if device_register fails

2015-10-05T03:47:09Z

Currently, memsetting and kfreeing the device is bad behaviour. The device will have a reference count of 1 and hence can cause trouble because it has kfree'd. Proper way to handle a failed device_register is to call put_device right after it fails. Signed-off-by: Levente Kurusa Acked-by: Evgeniy Polyakov Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman