6.14-stable review patch. If anyone has any objections, please let me know.
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From: Tomasz Pakuła tomasz.pakula.oficjalny@gmail.com
[ Upstream commit f538183e997a9fb6087e94e71e372de967b9e56a ]
This ensures the effect can actually be played on the connected force feedback device. Adds clamping functions used instead of rescaling, as we don't want to change the characteristics of the periodic effects.
Fixes edge cases found on Moza Racing and some other hardware where the effects would not play if the period is outside the defined logical range.
Changes in v6: - Use in-kernel clamp macro instead of a custom solution
Signed-off-by: Tomasz Pakuła tomasz.pakula.oficjalny@gmail.com Reviewed-by: Michał Kopeć michal@nozomi.space Reviewed-by: Paul Dino Jones paul@spacefreak18.xyz Tested-by: Paul Dino Jones paul@spacefreak18.xyz Tested-by: Cristóferson Bueno cbueno81@gmail.com Tested-by: Pablo Cisneros patchkez@protonmail.com Signed-off-by: Jiri Kosina jkosina@suse.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/hid/usbhid/hid-pidff.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-)
diff --git a/drivers/hid/usbhid/hid-pidff.c b/drivers/hid/usbhid/hid-pidff.c index 25dbed076f530..6b55345ce75ac 100644 --- a/drivers/hid/usbhid/hid-pidff.c +++ b/drivers/hid/usbhid/hid-pidff.c @@ -15,10 +15,9 @@ #include <linux/input.h> #include <linux/slab.h> #include <linux/usb.h> - #include <linux/hid.h> +#include <linux/minmax.h>
-#include "usbhid.h"
#define PID_EFFECTS_MAX 64 #define PID_INFINITE 0xffff @@ -192,6 +191,16 @@ struct pidff_device { u32 quirks; };
+/* + * Clamp value for a given field + */ +static s32 pidff_clamp(s32 i, struct hid_field *field) +{ + s32 clamped = clamp(i, field->logical_minimum, field->logical_maximum); + pr_debug("clamped from %d to %d", i, clamped); + return clamped; +} + /* * Scale an unsigned value with range 0..max for the given field */ @@ -372,7 +381,11 @@ static void pidff_set_periodic_report(struct pidff_device *pidff, pidff_set_signed(&pidff->set_periodic[PID_OFFSET], effect->u.periodic.offset); pidff_set(&pidff->set_periodic[PID_PHASE], effect->u.periodic.phase); - pidff->set_periodic[PID_PERIOD].value[0] = effect->u.periodic.period; + + /* Clamp period to ensure the device can play the effect */ + pidff->set_periodic[PID_PERIOD].value[0] = + pidff_clamp(effect->u.periodic.period, + pidff->set_periodic[PID_PERIOD].field);
hid_hw_request(pidff->hid, pidff->reports[PID_SET_PERIODIC], HID_REQ_SET_REPORT);