This series adds support for dev_pm_genpd_set_hwmode() and dev_pm_genpd_get_hwmode() APIs and support in gdsc provider drivers to register respective callbacks and venus consumer driver example using above API to switch the power domain(GDSC) to HW/SW modes dynamically at runtime. Changes in V6: - [PATCH 3/5]: Added details for 1usec delay in gdsc_set_hwmode() - [PATCH 4/5]: Updated commit text - Added R-By and T-By tags received on V5 RESEND - Link to V5 RESEND: https://lore.kernel.org/all/20240413152013.22307-1-quic_jkona@xxxxxxxxxxx/ - Link to V5: https://lore.kernel.org/all/20240315111046.22136-1-quic_jkona@xxxxxxxxxxx/ Changes in V5: - Updated 1st patch as per V4 review comments to synchronize the initial HW mode state by invoking ->get_hwmode_dev()callback in genpd_add_device() - With above change, SW cached hwmode will contain correct value initially, and it will be updated everytime mode is changed in set_hwmode, hence updated dev_pm_genpd_get_hwmode() to just return SW cached hwmode in 1st patch - Updated commit text for 1st, 3rd, 4th and 5th patches - Updated 3rd and 5th patches as per review comments received on V4 series - Added R-By tags received in older series to 1st and 2nd patches - Link to V4: https://lore.kernel.org/all/20240122-gdsc-hwctrl-v4-0-9061e8a7aa07@xxxxxxxxxx/ Changes in V4: - Re-worded 1st patch commit message, as per Bjorn's suggestion, and added Dmitry's R-b tag - Added Bjorn's and Dmitry's R-b tags to the 2nd patch - Re-worded 3rd patch commit message, to better explain the HW_CTRL_TRIGGER flag. - Added mode transition delay when setting mode for GDSC - Added status polling if GDSSC is enabled when transitioning from HW to SW - Re-worded 4th patch commit message to better explain why the HW_CTRL_TRIGGER needs to be used instead - Drop changes to SC7180, SDM845 and SM8550 video CC drivers, as only SC7280 and SM8250 have been tested so far. More platforms (with v6 venus) will be added eventually. - Call genpd set_hwmode API only for v6 and dropped the vcodec_pmdomains_hwctrl. - Re-worded 5th patch commit message accordingly. - Link to V3: https://lore.kernel.org/lkml/20230823114528.3677667-1-abel.vesa@xxxxxxxxxx/ Changes in V3: - 5th patch has been squashed in the 4th one - Link to V2: https://lore.kernel.org/lkml/20230816145741.1472721-1-abel.vesa@xxxxxxxxxx/ Changes in V2: - patch for printing domain HW-managed mode in the summary - patch that adds one consumer (venus) - patch for gdsc with new (different) flag - patch for videocc GDSC provider to update flags - Link to V1: https://lore.kernel.org/all/20230628105652.1670316-1-abel.vesa@xxxxxxxxxx/ Abel Vesa (1): PM: domains: Add the domain HW-managed mode to the summary Jagadeesh Kona (3): clk: qcom: gdsc: Add set and get hwmode callbacks to switch GDSC mode clk: qcom: videocc: Use HW_CTRL_TRIGGER for SM8250, SC7280 vcodec GDSC's venus: pm_helpers: Use dev_pm_genpd_set_hwmode to switch GDSC mode on V6 Ulf Hansson (1): PM: domains: Allow devices attached to genpd to be managed by HW drivers/clk/qcom/gdsc.c | 42 ++++++++++ drivers/clk/qcom/gdsc.h | 1 + drivers/clk/qcom/videocc-sc7280.c | 2 +- drivers/clk/qcom/videocc-sm8250.c | 4 +- .../media/platform/qcom/venus/pm_helpers.c | 39 ++++++---- drivers/pmdomain/core.c | 78 ++++++++++++++++++- include/linux/pm_domain.h | 17 ++++ 7 files changed, 162 insertions(+), 21 deletions(-) -- 2.43.0
