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thermal/drivers/tsens: Add suspend to RAM support for tsens

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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>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240328050230.31770-1-quic_priyjain@quicinc.com
This commit is contained in:
Priyansh Jain 2024-03-28 10:32:30 +05:30 committed by Daniel Lezcano
parent ff96922d33
commit 34b9a92b68
3 changed files with 37 additions and 0 deletions
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1
drivers/thermal/qcom/tsens-v2.c
View file

@ -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 = {

31
drivers/thermal/qcom/tsens.c
View file

@ -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;

5
drivers/thermal/qcom/tsens.h
View file

@ -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;