Commit 34b9a92b authored by Priyansh Jain's avatar Priyansh Jain Committed by Daniel Lezcano
Browse files

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



As part of suspend to RAM, tsens hardware will be turned off.
While resume callback, re-initialize tsens hardware.

Signed-off-by: default avatarPriyansh Jain <quic_priyjain@quicinc.com>
Acked-by: default avatarAmit Kucheria <amitk@kernel.org>
Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240328050230.31770-1-quic_priyjain@quicinc.com
parent ff96922d

drivers/thermal/qcom/tsens-v2.c

+1 −0
Original line number Diff line number Diff line
@@ -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 = {

drivers/thermal/qcom/tsens.c

+31 −0
Original line number Diff line number Diff line
@@ -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;

drivers/thermal/qcom/tsens.h

+5 −0
Original line number Diff line number Diff line
@@ -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;