Hi Lee, On 15/03/2017 13:14, Lee Jones wrote: > On Wed, 15 Mar 2017, Quentin Schulz wrote: > >> The X-Powers AXP20X and AXP22X PMICs have multiple ADCs. They expose >> information and data of the various power supplies they support such as >> ACIN, battery and VBUS. For example, they expose the current battery >> voltage, charge or discharge, as well as ACIN and VBUS current voltages >> and currents, internal PMIC temperature and ADC on 2 different GPIOs >> when in the right mode (for the AXP209 only). > > What are you missing from this set now? What Acks etc? And what's > the plan with regards to route to Mainline? Where are the dependencies > etc? > Basically, a consensus on how we should named the DT property I added in patch 01 and 02 (which is used afterwards in battery driver). All other patches have ACKs. I added some logic to the battery driver so if anyone wants to review that you're welcome. I already got several ACKs from the v3 though. No dependencies except for the battery driver (and the first two patches) which needs the battery "framework" in the Power Supply subsystem. A v9 of this framework has been sent a little bit more than a week ago, I need this to be merged first or the battery driver will just not compile. I think the other patches are ready to be merged. Thanks, Quentin >> The ACIN power supply driver is added by this patch. The AXP20X and >> AXP22X can both read the status and the "usability" of the power supply >> but only the AXP209 will be able to tell the current current and voltage >> of the power supply by reading ADC channels. It is simply not supported >> by the AXP22X PMICs. >> >> The battery power supply driver is also added by this patch. The AXP20X >> and AXP22X share most of their behaviour but have slight variations. The >> allowed target voltages for battery charging are not the same, the >> AXP22X PMIC are able to tell if the battery percentage computed by the >> PMIC is trustworthy and they have different formulas for computing max >> current for battery power supply. The driver is able to give the current >> voltage and current of the battery (be it charging or discharging), the >> maximal and minimal voltage and maximal current allowed for the battery, >> whether the battery is present and usable and its capacity. It will get >> the battery current current and voltage by reading the ADC channels. The >> PMIC allows maximal voltages (4.36V for AXP20X and 4.22V and 4.24V for >> AXP22X) that should not be used with Lithium-based batteries and since >> this PMIC is supposed to be used with Lithium-based batteries, they have >> been disabled. The values returned by the ADC driver are multipled by >> 1000 to scale from the mV returned by the ADC to the uV expected by the >> power supply framework. >> >> This series of patch adds DT bindings for ACIN power supply, ADC and >> battery power supply drivers for AXP20X and AXP22X PMICs and their >> documentation. It also enables the supported power supplies for the >> Nextthing Co. CHIP and Sinlinx SinA33 boards. >> >> The different drivers are also added to the MFD cells of the AXP20X and >> AXP22X cells and the writeable and volatile regs updated to work with >> the newly added drivers. >> >> This series of patch is based on a previous upstreaming attempt done by >> Bruno Prémont few months ago. It differs in three points: the ADC >> driver does not tell the battery temperature (TS_IN) as I do not have a >> board to test it with, it does not tell the instantaneous battery power >> as it returns crazy values for me and finally no support for OCV curves >> for the battery. >> >> You can test these patches from this repo and branch: >> https://github.com/QSchulz/linux/tree/axp2xx_adc_batt_ac_v4 >> >> v4: >> - added the ability to set maximum constant charge current from sysfs, >> - added a warning when setting a higher than current maximum constant charge >> current, >> - set default to minimum possible value for current and maximum constant charge >> current when no battery DT is present or invalid battery DT, >> - fixed a forgotten custom formula to compute maximum constant charge current >> for AXP22X, >> - automatically lower the current constant charge current when it is higher >> than the maximum constant charge current about to be set, >> >> v3: >> - Removed DT property for constant charge current in favor of the WIP >> battery framework as requested by Sebastian Reichel, >> - Using a simple if condition instead of a switch in the ADC driver, >> - Fixed error handling in ADC driver's probe, >> - Fixed missing call to iio_map_array_unregister in the ADC driver's >> remove, >> - Removed ADC driver's DT node and documentation, >> - Merged IIO channel mapping patches into the original ADC driver >> patch, >> - Removed `adding V-OFF to writeable reg' patch as it's already in >> writeable reg range, >> >> v2: >> - Some registers' name have been changed to better reflect their >> purpose, >> - Make VBUS power supply driver use IIO channels when AXP ADC driver is >> enabled, but fall back on previous behavior when disabled. This is made >> to avoid the ADC driver overwritting registers for VBUS power supply >> ADC when removed, >> - Removed useless adding of data registers to volatile registers, >> - Reordered IIO channels, now grouped by same part of the PMIC (e.g. >> voltage and current of the battery have the same index in different >> IIO types), >> - Added structures for specific data instead of matching on IDs, >> - Switched from DT IIO channels mapping to iio_map structures IIO >> channels mapping, >> >> Quentin >> >> Quentin Schulz (18): >> dt-bindings: power: battery: add constant-charge-current property >> power: supply: power_supply_core: add constant-charge-current optional >> property >> mfd: axp20x: correct name of temperature data ADC registers >> iio: adc: add support for X-Powers AXP20X and AXP22X PMICs ADCs >> mfd: axp20x: add ADC cells for AXP20X and AXP22X PMICs >> mfd: axp20x: add AC power supply cells for AXP22X PMICs >> ARM: dtsi: axp209: add AC power supply subnode >> ARM: dtsi: axp22x: add AC power supply subnode >> ARM: dts: sun8i: sina33: enable ACIN power supply subnode >> ARM: sun5i: chip: enable ACIN power supply subnode >> dt-bindings: power: supply: add AXP20X/AXP22X battery DT binding >> mfd: axp20x: add CHRG_CTRL1/2/3 to writeable regs for AXP20X/AXP22X >> power: supply: add battery driver for AXP20X and AXP22X PMICs >> mfd: axp20x: add MFD cells for AXP20X and AXP22X battery driver >> ARM: dtsi: axp209: add battery power supply subnode >> ARM: dtsi: axp22x: add battery power supply subnode >> ARM: dts: sun8i: sina33: enable battery power supply subnode >> ARM: sun5i: chip: enable battery power supply subnode >> >> .../bindings/power/supply/axp20x_battery.txt | 30 + >> .../devicetree/bindings/power/supply/battery.txt | 2 + >> arch/arm/boot/dts/axp209.dtsi | 10 + >> arch/arm/boot/dts/axp22x.dtsi | 10 + >> arch/arm/boot/dts/sun5i-r8-chip.dts | 8 + >> arch/arm/boot/dts/sun8i-a33-sinlinx-sina33.dts | 8 + >> drivers/iio/adc/Kconfig | 10 + >> drivers/iio/adc/Makefile | 1 + >> drivers/iio/adc/axp20x_adc.c | 617 +++++++++++++++++++++ >> drivers/mfd/axp20x.c | 29 +- >> drivers/power/supply/Kconfig | 12 + >> drivers/power/supply/Makefile | 1 + >> drivers/power/supply/axp20x_battery.c | 565 +++++++++++++++++++ >> drivers/power/supply/power_supply_core.c | 3 + >> include/linux/mfd/axp20x.h | 4 +- >> include/linux/power_supply.h | 1 + >> 16 files changed, 1308 insertions(+), 3 deletions(-) >> create mode 100644 Documentation/devicetree/bindings/power/supply/axp20x_battery.txt >> create mode 100644 drivers/iio/adc/axp20x_adc.c >> create mode 100644 drivers/power/supply/axp20x_battery.c >> > -- Quentin Schulz, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
