Hi Abel,
Thanks for the patch.
On 6/28/2023 10:48 PM, Konrad Dybcio wrote:
On 28.06.2023 12:56, Abel Vesa wrote:
Implement the GDSC specific genpd set_hwmode_dev callback in order to
switch the HW control on or off. For any GDSC that supports HW control
set this callback in order to allow its consumers to control it.
Signed-off-by: Abel Vesa <abel.vesa@xxxxxxxxxx>
---
This still does nothing to prevent the HW_CTRL state being changed in
init, enable and disable functions.
Konrad
drivers/clk/qcom/gdsc.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/drivers/clk/qcom/gdsc.c b/drivers/clk/qcom/gdsc.c
index 5358e28122ab..9a04bf2e4379 100644
--- a/drivers/clk/qcom/gdsc.c
+++ b/drivers/clk/qcom/gdsc.c
@@ -314,6 +314,26 @@ static int gdsc_enable(struct generic_pm_domain *domain)
return 0;
}
+static int gdsc_set_hwmode_dev(struct generic_pm_domain *domain,
+ struct device *dev, bool enable)
+{
+ int ret = gdsc_hwctrl(domain_to_gdsc(domain), enable);
+
+ if (ret)
+ goto out;
+
+ /*
+ * Wait for the GDSC to go through a power down and
+ * up cycle. In case there is a status polling going on
+ * before the power cycle is completed it might read an
+ * wrong status value.
+ */
+ udelay(1);
+
+out:
+ return ret;
+}
+
static int gdsc_disable(struct generic_pm_domain *domain)
{
struct gdsc *sc = domain_to_gdsc(domain);
@@ -451,6 +471,8 @@ static int gdsc_init(struct gdsc *sc)
sc->pd.power_off = gdsc_disable;
if (!sc->pd.power_on)
sc->pd.power_on = gdsc_enable;
+ if (sc->flags & HW_CTRL)
+ sc->pd.set_hwmode_dev = gdsc_set_hwmode_dev;
We do not want to move to SW mode without consumers wanting to move to
this mode.
We want a new flag for the consumers wanting to move to this mode. The
mode in which the GDSC would be enabled would be in SW mode only.
+ if (sc->flags & HW_CTRL_TRIGGER) {
+ sc->pd.set_hwmode_dev = gdsc_set_mode;
+ }
+
ret = pm_genpd_init(&sc->pd, NULL, !on);
if (ret)
--
Thanks & Regards,
Taniya Das.
