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: 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
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@ -107,6 +107,7 @@ static const struct reg_field tsens_v2_regfields[MAX_REGFIELDS] = {
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static const struct tsens_ops ops_generic_v2 = {
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.init = init_common,
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.get_temp = get_temp_tsens_valid,
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.resume = tsens_resume_common,
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};
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struct tsens_plat_data data_tsens_v2 = {
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@ -17,6 +17,7 @@
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#include <linux/pm.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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#include <linux/suspend.h>
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#include <linux/thermal.h>
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#include "../thermal_hwmon.h"
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#include "tsens.h"
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@ -1193,6 +1194,36 @@ static int tsens_register_irq(struct tsens_priv *priv, char *irqname,
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return ret;
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}
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#ifdef CONFIG_SUSPEND
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static int tsens_reinit(struct tsens_priv *priv)
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{
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if (tsens_version(priv) >= VER_2_X) {
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/*
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* Re-enable the watchdog, unmask the bark.
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* Disable cycle completion monitoring
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*/
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if (priv->feat->has_watchdog) {
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regmap_field_write(priv->rf[WDOG_BARK_MASK], 0);
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regmap_field_write(priv->rf[CC_MON_MASK], 1);
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}
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/* Re-enable interrupts */
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tsens_enable_irq(priv);
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}
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return 0;
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}
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int tsens_resume_common(struct tsens_priv *priv)
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{
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if (pm_suspend_target_state == PM_SUSPEND_MEM)
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tsens_reinit(priv);
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return 0;
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}
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#endif /* !CONFIG_SUSPEND */
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static int tsens_register(struct tsens_priv *priv)
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{
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int i, ret;
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@ -634,6 +634,11 @@ void compute_intercept_slope(struct tsens_priv *priv, u32 *pt1, u32 *pt2, u32 mo
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int init_common(struct tsens_priv *priv);
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int get_temp_tsens_valid(const struct tsens_sensor *s, int *temp);
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int get_temp_common(const struct tsens_sensor *s, int *temp);
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#ifdef CONFIG_SUSPEND
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int tsens_resume_common(struct tsens_priv *priv);
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#else
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#define tsens_resume_common NULL
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#endif
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/* TSENS target */
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extern struct tsens_plat_data data_8960;
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