Messages in this thread Patch in this message | | | From | Akhil P Oommen <> | Subject | [PATCH v5 2/5] clk: qcom: gdsc: Support 'synced_poweroff' genpd flag | Date | Mon, 2 Jan 2023 16:18:28 +0530 |
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Add support for the newly added 'synced_poweroff' genpd flag. This allows some clients (like adreno gpu driver) to request gdsc driver to ensure a votable gdsc (like gpucc cx gdsc) has collapsed at hardware.
Signed-off-by: Akhil P Oommen <quic_akhilpo@quicinc.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> ---
(no changes since v3)
Changes in v3: - Rename the var 'force_sync' to 'wait (Stephen)
drivers/clk/qcom/gdsc.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/clk/qcom/gdsc.c b/drivers/clk/qcom/gdsc.c index 9e4d6ce891aa..5358e28122ab 100644 --- a/drivers/clk/qcom/gdsc.c +++ b/drivers/clk/qcom/gdsc.c @@ -136,7 +136,8 @@ static int gdsc_update_collapse_bit(struct gdsc *sc, bool val) return 0; } -static int gdsc_toggle_logic(struct gdsc *sc, enum gdsc_status status) +static int gdsc_toggle_logic(struct gdsc *sc, enum gdsc_status status, + bool wait) { int ret; @@ -149,7 +150,7 @@ static int gdsc_toggle_logic(struct gdsc *sc, enum gdsc_status status) ret = gdsc_update_collapse_bit(sc, status == GDSC_OFF); /* If disabling votable gdscs, don't poll on status */ - if ((sc->flags & VOTABLE) && status == GDSC_OFF) { + if ((sc->flags & VOTABLE) && status == GDSC_OFF && !wait) { /* * Add a short delay here to ensure that an enable * right after it was disabled does not put it in an @@ -275,7 +276,7 @@ static int gdsc_enable(struct generic_pm_domain *domain) gdsc_deassert_clamp_io(sc); } - ret = gdsc_toggle_logic(sc, GDSC_ON); + ret = gdsc_toggle_logic(sc, GDSC_ON, false); if (ret) return ret; @@ -352,7 +353,7 @@ static int gdsc_disable(struct generic_pm_domain *domain) if (sc->pwrsts == PWRSTS_RET_ON) return 0; - ret = gdsc_toggle_logic(sc, GDSC_OFF); + ret = gdsc_toggle_logic(sc, GDSC_OFF, domain->synced_poweroff); if (ret) return ret; @@ -392,7 +393,7 @@ static int gdsc_init(struct gdsc *sc) /* Force gdsc ON if only ON state is supported */ if (sc->pwrsts == PWRSTS_ON) { - ret = gdsc_toggle_logic(sc, GDSC_ON); + ret = gdsc_toggle_logic(sc, GDSC_ON, false); if (ret) return ret; } -- 2.7.4
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