On Mar 15, 2024 at 16:40:42 +0530, Jagadeesh Kona wrote: > From: Ulf Hansson <ulf.hansson@xxxxxxxxxx> > > Some power-domains may be capable of relying on the HW to control the power > for a device that's hooked up to it. Typically, for these kinds of > configurations the consumer driver should be able to change the behavior of > power domain at runtime, control the power domain in SW mode for certain > configurations and handover the control to HW mode for other usecases. > > To allow a consumer driver to change the behaviour of the PM domain for its > device, let's provide a new function, dev_pm_genpd_set_hwmode(). Moreover, > let's add a corresponding optional genpd callback, ->set_hwmode_dev(), > which the genpd provider should implement if it can support switching > between HW controlled mode and SW controlled mode. Similarly, add the > dev_pm_genpd_get_hwmode() to allow consumers to read the current mode and > its corresponding optional genpd callback, ->get_hwmode_dev(), which the > genpd provider can also implement to synchronize the initial HW mode > state in genpd_add_device() by reading back the mode from the hardware. > > Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx> > Signed-off-by: Abel Vesa <abel.vesa@xxxxxxxxxx> > Signed-off-by: Jagadeesh Kona <quic_jkona@xxxxxxxxxxx> > Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> > --- > drivers/pmdomain/core.c | 64 +++++++++++++++++++++++++++++++++++++++ > include/linux/pm_domain.h | 17 +++++++++++ > 2 files changed, 81 insertions(+) > LGTM! Reviewed-by: Dhruva Gole <d-gole@xxxxxx> -- Best regards, Dhruva
