hi Ulf, Lucas and all interested, This makes available a new genpd flag GENPD_FLAG_IRQ_ON in a relatively generic way: genpd providers can set it when irqs are needed to manage power on/off. Since the main goal here has been to fix systemd suspend/resume, adjusting these callbacks is all that's being done when this flag gets set. And since I'm working on imx8mq, the 2nd patch makes gpcv2 set this new flag when a power domain has a power-supply described in DT. For i.MX8M* platforms, this should be ok. For other platforms this might be useful too but needs to be tested. revision history ---------------- v6: (thank you Ulf and Lucas) * drop the cleanup patch to use BIT() * use of_property_read_bool() to find the power-supply * clean up the callback assignment * remove the wrong error printing (flag-check can be added later to *drivers* that have noirq callbacks) v5: (thank you Lucas) * simplify gpcv2 code: just set GENPD_FLAG_IRQ_ON when a power-supply is present https://lore.kernel.org/linux-arm-kernel/20220721043608.1527686-1-martin.kepplinger@xxxxxxx/ v4: (thank you Ulf and Lucas) * split up genpd core and gpcv2 changes * set callbacks inside of pm_genpd_init() * make flag name and description a bit more generic * print an error in __genpd_dev_pm_attach() if there a "mismatch" https://lore.kernel.org/linux-arm-kernel/20220720043444.1289952-1-martin.kepplinger@xxxxxxx/T/#t v3: (thank you Ulf) * move DT parsing to gpcv2 and create a genpd flag that gets set https://lore.kernel.org/linux-arm-kernel/20220718210302.674897-1-martin.kepplinger@xxxxxxx/ v2: (thank you Krzysztof) * rewrite: find possible regulators' interrupts property in parents instead of inventing a new property. https://lore.kernel.org/linux-arm-kernel/20220712121832.3659769-1-martin.kepplinger@xxxxxxx/ v1: (initial idea) https://lore.kernel.org/linux-arm-kernel/20220711094549.3445566-1-martin.kepplinger@xxxxxxx/T/#t Martin Kepplinger (2): power: domain: handle genpd correctly when needing interrupts soc: imx: gpcv2: fix suspend/resume by setting GENPD_FLAG_IRQ_ON drivers/base/power/domain.c | 13 +++++++++++-- drivers/soc/imx/gpcv2.c | 3 +++ include/linux/pm_domain.h | 5 +++++ 3 files changed, 19 insertions(+), 2 deletions(-) -- 2.30.2
