Merge branch 'for-6.15/amd_sfh' into for-linus

From: Mario Limonciello <mario.limonciello@amd.com>

Some platforms include a human presence detection (HPD) sensor. When
enabled and a user is detected a wake event will be emitted from the
sensor fusion hub that software can react to.

Example use cases are "wake from suspend on approach" or to "lock
when leaving".

This is currently enabled by default on supported systems, but users
can't control it. This essentially means that wake on approach is
enabled which is a really surprising behavior to users that don't
expect it.

Instead of defaulting to enabled add a sysfs knob that users can
use to enable the feature if desirable and set it to disabled by
default.

1 files changed, 12 insertions, 3 deletions

diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index 675b252d9c8ce..ccd54c089bab8 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -242,6 +242,9 @@ int pwm_round_waveform_might_sleep(struct pwm_device *pwm, struct pwm_waveform *
 
 	BUG_ON(WFHWSIZE < ops->sizeof_wfhw);
 
+	if (!pwmchip_supports_waveform(chip))
+		return -EOPNOTSUPP;
+
 	if (!pwm_wf_valid(wf))
 		return -EINVAL;
 
@@ -294,6 +297,9 @@ int pwm_get_waveform_might_sleep(struct pwm_device *pwm, struct pwm_waveform *wf
 
 	BUG_ON(WFHWSIZE < ops->sizeof_wfhw);
 
+	if (!pwmchip_supports_waveform(chip) || !ops->read_waveform)
+		return -EOPNOTSUPP;
+
 	guard(pwmchip)(chip);
 
 	if (!chip->operational)
@@ -320,6 +326,9 @@ static int __pwm_set_waveform(struct pwm_device *pwm,
 
 	BUG_ON(WFHWSIZE < ops->sizeof_wfhw);
 
+	if (!pwmchip_supports_waveform(chip))
+		return -EOPNOTSUPP;
+
 	if (!pwm_wf_valid(wf))
 		return -EINVAL;
 
@@ -592,7 +601,7 @@ static int __pwm_apply(struct pwm_device *pwm, const struct pwm_state *state)
 	    state->usage_power == pwm->state.usage_power)
 		return 0;
 
-	if (ops->write_waveform) {
+	if (pwmchip_supports_waveform(chip)) {
 		struct pwm_waveform wf;
 		char wfhw[WFHWSIZE];
 
@@ -746,7 +755,7 @@ int pwm_get_state_hw(struct pwm_device *pwm, struct pwm_state *state)
 	if (!chip->operational)
 		return -ENODEV;
 
-	if (ops->read_waveform) {
+	if (pwmchip_supports_waveform(chip) && ops->read_waveform) {
 		char wfhw[WFHWSIZE];
 		struct pwm_waveform wf;
 
@@ -1276,7 +1285,7 @@ static int pwm_export_child(struct device *pwmchip_dev, struct pwm_device *pwm)
 	return 0;
 }
 
-static int pwm_unexport_match(struct device *pwm_dev, void *data)
+static int pwm_unexport_match(struct device *pwm_dev, const void *data)
 {
 	return pwm_from_dev(pwm_dev) == data;
 }