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HID: pidff: Factor out code for setting gain

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[ Upstream commit f7ebf0b11b9e04bf59c438ad14f0115b12aa2f44 ]

Makes it possible to easily set gain from inside hid-pidff.c

Changes in v7:
- Check if device gain field exists before setting device gain

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>
This commit is contained in:
Tomasz Pakuła
2025-02-01 12:39:01 +01:00
committed by Greg Kroah-Hartman
parent 5243ca2a5c
commit 8f0b2d791e
1 changed files with 15 additions and 11 deletions
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26
drivers/hid/usbhid/hid-pidff.c
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@@ -539,6 +539,19 @@ static int pidff_needs_set_ramp(struct ff_effect *effect, struct ff_effect *old)
effect->u.ramp.end_level != old->u.ramp.end_level;
}
/*
* Set device gain
*/
static void pidff_set_gain_report(struct pidff_device *pidff, u16 gain)
{
if (!pidff->device_gain[PID_DEVICE_GAIN_FIELD].field)
return;
pidff_set(&pidff->device_gain[PID_DEVICE_GAIN_FIELD], gain);
hid_hw_request(pidff->hid, pidff->reports[PID_DEVICE_GAIN],
HID_REQ_SET_REPORT);
}
/*
* Clear device control report
*/
@@ -865,11 +878,7 @@ static int pidff_upload_effect(struct input_dev *dev, struct ff_effect *effect,
*/
static void pidff_set_gain(struct input_dev *dev, u16 gain)
{
struct pidff_device *pidff = dev->ff->private;
pidff_set(&pidff->device_gain[PID_DEVICE_GAIN_FIELD], gain);
hid_hw_request(pidff->hid, pidff->reports[PID_DEVICE_GAIN],
HID_REQ_SET_REPORT);
pidff_set_gain_report(dev->ff->private, gain);
}
static void pidff_autocenter(struct pidff_device *pidff, u16 magnitude)
@@ -1414,12 +1423,7 @@ int hid_pidff_init_with_quirks(struct hid_device *hid, __u32 initial_quirks)
if (error)
goto fail;
if (test_bit(FF_GAIN, dev->ffbit)) {
pidff_set(&pidff->device_gain[PID_DEVICE_GAIN_FIELD], 0xffff);
hid_hw_request(hid, pidff->reports[PID_DEVICE_GAIN],
HID_REQ_SET_REPORT);
}
pidff_set_gain_report(pidff, 0xffff);
error = pidff_check_autocenter(pidff, dev);
if (error)
goto fail;