| Message ID | 20240328050230.31770-1-quic_priyjain@quicinc.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | [v5] thermal/drivers/tsens: Add suspend to RAM support for tsens | expand |
On Thu, Mar 28, 2024 at 10:33 AM Priyansh Jain <quic_priyjain@quicinc.com> wrote: > > As part of suspend to RAM, tsens hardware will be turned off. > While resume callback, re-initialize tsens hardware. > > Signed-off-by: Priyansh Jain <quic_priyjain@quicinc.com> Acked-by: Amit Kucheria <amitk@kernel.org> > --- > V4 -> V5: Remove unused spinlock from tsens_reinit function. > V3 -> V4: Make tsens_reinit function specific to tsens v2. Add > NULL resume callback support for platform whose versions < ver_2_x > in tsens ops. > V2 -> V3: Remove suspend callback & interrupt enablement part from > resume callback. > V1 -> V2: Update commit text to explain the necessity of this patch. > > drivers/thermal/qcom/tsens-v2.c | 1 + > drivers/thermal/qcom/tsens.c | 31 +++++++++++++++++++++++++++++++ > drivers/thermal/qcom/tsens.h | 5 +++++ > 3 files changed, 37 insertions(+) > > diff --git a/drivers/thermal/qcom/tsens-v2.c b/drivers/thermal/qcom/tsens-v2.c > index 29a61d2d6ca3..0cb7301eca6e 100644 > --- a/drivers/thermal/qcom/tsens-v2.c > +++ b/drivers/thermal/qcom/tsens-v2.c > @@ -107,6 +107,7 @@ static const struct reg_field tsens_v2_regfields[MAX_REGFIELDS] = { > static const struct tsens_ops ops_generic_v2 = { > .init = init_common, > .get_temp = get_temp_tsens_valid, > + .resume = tsens_resume_common, > }; > > struct tsens_plat_data data_tsens_v2 = { > diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c > index 6d7c16ccb44d..1c9df4f84641 100644 > --- a/drivers/thermal/qcom/tsens.c > +++ b/drivers/thermal/qcom/tsens.c > @@ -17,6 +17,7 @@ > #include <linux/pm.h> > #include <linux/regmap.h> > #include <linux/slab.h> > +#include <linux/suspend.h> > #include <linux/thermal.h> > #include "../thermal_hwmon.h" > #include "tsens.h" > @@ -1193,6 +1194,36 @@ static int tsens_register_irq(struct tsens_priv *priv, char *irqname, > return ret; > } > > +#ifdef CONFIG_SUSPEND > +static int tsens_reinit(struct tsens_priv *priv) > +{ > + if (tsens_version(priv) >= VER_2_X) { > + /* > + * Re-enable the watchdog, unmask the bark. > + * Disable cycle completion monitoring > + */ > + if (priv->feat->has_watchdog) { > + regmap_field_write(priv->rf[WDOG_BARK_MASK], 0); > + regmap_field_write(priv->rf[CC_MON_MASK], 1); > + } > + > + /* Re-enable interrupts */ > + tsens_enable_irq(priv); > + } > + > + return 0; > +} > + > +int tsens_resume_common(struct tsens_priv *priv) > +{ > + if (pm_suspend_target_state == PM_SUSPEND_MEM) > + tsens_reinit(priv); > + > + return 0; > +} > + > +#endif /* !CONFIG_SUSPEND */ > + > static int tsens_register(struct tsens_priv *priv) > { > int i, ret; > diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h > index cb637fa289ca..cab39de045b1 100644 > --- a/drivers/thermal/qcom/tsens.h > +++ b/drivers/thermal/qcom/tsens.h > @@ -634,6 +634,11 @@ void compute_intercept_slope(struct tsens_priv *priv, u32 *pt1, u32 *pt2, u32 mo > int init_common(struct tsens_priv *priv); > int get_temp_tsens_valid(const struct tsens_sensor *s, int *temp); > int get_temp_common(const struct tsens_sensor *s, int *temp); > +#ifdef CONFIG_SUSPEND > +int tsens_resume_common(struct tsens_priv *priv); > +#else > +#define tsens_resume_common NULL > +#endif > > /* TSENS target */ > extern struct tsens_plat_data data_8960; > -- > 2.17.1 >
On 28/03/2024 06:02, Priyansh Jain wrote: > As part of suspend to RAM, tsens hardware will be turned off. > While resume callback, re-initialize tsens hardware. > > Signed-off-by: Priyansh Jain <quic_priyjain@quicinc.com> > --- Applied, thanks
diff --git a/drivers/thermal/qcom/tsens-v2.c b/drivers/thermal/qcom/tsens-v2.c index 29a61d2d6ca3..0cb7301eca6e 100644 --- a/drivers/thermal/qcom/tsens-v2.c +++ b/drivers/thermal/qcom/tsens-v2.c @@ -107,6 +107,7 @@ static const struct reg_field tsens_v2_regfields[MAX_REGFIELDS] = { static const struct tsens_ops ops_generic_v2 = { .init = init_common, .get_temp = get_temp_tsens_valid, + .resume = tsens_resume_common, }; struct tsens_plat_data data_tsens_v2 = { diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c index 6d7c16ccb44d..1c9df4f84641 100644 --- a/drivers/thermal/qcom/tsens.c +++ b/drivers/thermal/qcom/tsens.c @@ -17,6 +17,7 @@ #include <linux/pm.h> #include <linux/regmap.h> #include <linux/slab.h> +#include <linux/suspend.h> #include <linux/thermal.h> #include "../thermal_hwmon.h" #include "tsens.h" @@ -1193,6 +1194,36 @@ static int tsens_register_irq(struct tsens_priv *priv, char *irqname, return ret; } +#ifdef CONFIG_SUSPEND +static int tsens_reinit(struct tsens_priv *priv) +{ + if (tsens_version(priv) >= VER_2_X) { + /* + * Re-enable the watchdog, unmask the bark. + * Disable cycle completion monitoring + */ + if (priv->feat->has_watchdog) { + regmap_field_write(priv->rf[WDOG_BARK_MASK], 0); + regmap_field_write(priv->rf[CC_MON_MASK], 1); + } + + /* Re-enable interrupts */ + tsens_enable_irq(priv); + } + + return 0; +} + +int tsens_resume_common(struct tsens_priv *priv) +{ + if (pm_suspend_target_state == PM_SUSPEND_MEM) + tsens_reinit(priv); + + return 0; +} + +#endif /* !CONFIG_SUSPEND */ + static int tsens_register(struct tsens_priv *priv) { int i, ret; diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h index cb637fa289ca..cab39de045b1 100644 --- a/drivers/thermal/qcom/tsens.h +++ b/drivers/thermal/qcom/tsens.h @@ -634,6 +634,11 @@ void compute_intercept_slope(struct tsens_priv *priv, u32 *pt1, u32 *pt2, u32 mo int init_common(struct tsens_priv *priv); int get_temp_tsens_valid(const struct tsens_sensor *s, int *temp); int get_temp_common(const struct tsens_sensor *s, int *temp); +#ifdef CONFIG_SUSPEND +int tsens_resume_common(struct tsens_priv *priv); +#else +#define tsens_resume_common NULL +#endif /* TSENS target */ extern struct tsens_plat_data data_8960;
As part of suspend to RAM, tsens hardware will be turned off. While resume callback, re-initialize tsens hardware. Signed-off-by: Priyansh Jain <quic_priyjain@quicinc.com> --- V4 -> V5: Remove unused spinlock from tsens_reinit function. V3 -> V4: Make tsens_reinit function specific to tsens v2. Add NULL resume callback support for platform whose versions < ver_2_x in tsens ops. V2 -> V3: Remove suspend callback & interrupt enablement part from resume callback. V1 -> V2: Update commit text to explain the necessity of this patch. drivers/thermal/qcom/tsens-v2.c | 1 + drivers/thermal/qcom/tsens.c | 31 +++++++++++++++++++++++++++++++ drivers/thermal/qcom/tsens.h | 5 +++++ 3 files changed, 37 insertions(+)