Re: [PATCH v1 23/26] thermal/drivers/acerhdf: Use generic thermal_zone_get_trip() function

From: Peter Kästle
Date: Mon Aug 08 2022 - 15:37:51 EST


Hello,

some comments. Please merge if those are considered. Thanks.


On 05.08.22 16:57, Daniel Lezcano wrote:
The thermal framework gives the possibility to register the trip
points with the thermal zone. When that is done, no get_trip_* ops are
needed and they can be removed.

Convert ops content logic into generic trip points and register them with the
thermal zone.

Signed-off-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>

Acked-by: Peter Kästle <peter@xxxxxxxx>

---
drivers/platform/x86/acerhdf.c | 73 ++++++++++++----------------------
1 file changed, 26 insertions(+), 47 deletions(-)

diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c
index 3463629f8764..cf757f3a1e6b 100644
--- a/drivers/platform/x86/acerhdf.c
+++ b/drivers/platform/x86/acerhdf.c

[...]

@@ -137,6 +139,15 @@ struct ctrl_settings {
int mcmd_enable;
};
+static struct thermal_trip trips[] = {
+ [0] = { .temperature = ACERHDF_DEFAULT_TEMP_FANON,
+ .hysteresis = ACERHDF_DEFAULT_TEMP_FANON - ACERHDF_DEFAULT_TEMP_FANOFF,
+ .type = THERMAL_TRIP_ACTIVE },
+
+ [1] = { .temperature = ACERHDF_TEMP_CRIT,
+ .type = THERMAL_TRIP_CRITICAL }
+};
+
static struct ctrl_settings ctrl_cfg __read_mostly;
/* Register addresses and values for different BIOS versions */
@@ -326,6 +337,15 @@ static void acerhdf_check_param(struct thermal_zone_device *thermal)
fanon = ACERHDF_MAX_FANON;
}
+ if (fanon < fanoff) {
+ pr_err("fanoff temperature (%d) is above fanon temperature (%d), clamping to %d\n",
+ fanoff, fanon, fanon);
+ fanoff = fanon;
+ };
+

Tab whitespace, please remove.

+ trips[0].temperature = fanon;
+ trips[0].hysteresis = fanon - fanoff;
+

Tab whitespace, please remove

if (kernelmode && prev_interval != interval) {
if (interval > ACERHDF_MAX_INTERVAL) {
pr_err("interval too high, set to %d\n",

I don't know the current behavior of the thermal layer well enough.
Is it ensured, that those new trips[0].temperature / trips[0].hysteresis values are taken into account?


--
best regards,
--peter;