This series adds some improvements to the axp20x* power supply drivers to better support suspend/resume and use on mobile devices.
The first two patches fix bugs I found while testing the ONLINE control added in later patches. Patches 3 and 7 allow userspace to take the power supplies offline. Patches 4 and 8 allow userspace to control the wakeup behavior. Patch 9 avoids polling USB VBUS presence when possible. While working on the RSB driver, I was seeing ~50 transfers per second, while idle and tracked it down to this VBUS polling (20 reads/second). The polling often caused the CPU to clock up and back down, which triggered the remaining transfers (changes to the CPU voltage). Unfortunately, I don't see a way to avoid the polling when running on battery (where it matters most), other than to move the polling back to the USB PHY driver. Changes since v2: - Patch 1 was merged - Only check ACIN_PATH_SEL when necessary (1) - Update commit message (5) - Avoided reordering lines until/unless necessary (5, 7) - Update comment and add ID check in axp20x_usb_power_set_property (it seemed more correct than adding another comment) (6) - Add Reviewed-by where there were no comments (2-4, 7-8) Changes since v1: - Add patches 1-2 - Shift value properly in calls to regmap_update_bits (3, 7) - Use #ifdef instead of #if to avoid -Wundef warnings (4, 8) - Poll once after an IRQ, instead of setting power->online in the IRQ (9) - Poll once on resume, in case the state changed during suspend (9) Samuel Holland (8): power: supply: axp20x_ac_power: Fix reporting online status power: supply: axp20x_ac_power: Allow offlining power: supply: axp20x_ac_power: Add wakeup control power: supply: axp20x_usb_power: Remove unused device_node power: supply: axp20x_usb_power: Use a match structure power: supply: axp20x_usb_power: Allow offlining power: supply: axp20x_usb_power: Add wakeup control power: supply: axp20x_usb_power: Only poll while offline drivers/power/supply/axp20x_ac_power.c | 131 +++++++++++--- drivers/power/supply/axp20x_usb_power.c | 219 ++++++++++++++++++------ 2 files changed, 276 insertions(+), 74 deletions(-) -- 2.23.0 -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/linux-sunxi/20200113035310.18950-1-samuel%40sholland.org.
