The 24HD has 1 button per LED (first three buttons of each group).
We need a special treatment for them as it's not a uniq button that
switches between the LEDs.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
---
Changes in v2:
- amended to use the old bank ordering
- removed the pr_err debug left over
---
drivers/hid/wacom_wac.c | 38 +++++++++++++++++++++++++++++++++++---
1 file changed, 35 insertions(+), 3 deletions(-)
diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
index a9693d5..0914667 100644
--- a/drivers/hid/wacom_wac.c
+++ b/drivers/hid/wacom_wac.c
@@ -2763,18 +2763,47 @@ static void wacom_setup_numbered_buttons(struct input_dev *input_dev,
__set_bit(BTN_BASE + (i-16), input_dev->keybit);
}
+static void wacom_24hd_update_leds(struct wacom *wacom, int mask, int group)
+{
+ struct wacom_led *led;
+ int i;
+ bool updated = false;
+
+ /*
+ * 24HD has LED group 1 to the left and LED group 0 to the right.
+ * So group 0 matches the second half of the buttons and thus the mask
+ * needs to be shifted.
+ */
+ if (group == 0)
+ mask >>= 8;
+
+ for (i = 0; i < 3; i++) {
+ led = wacom_led_find(wacom, group, i);
+ if (!led) {
+ hid_err(wacom->hdev, "can't find LED %d in group %d\n",
+ i, group);
+ continue;
+ }
+ if (!updated && mask & BIT(i)) {
+ led->held = true;
+ led_trigger_event(&led->trigger, LED_FULL);
+ } else {
+ led->held = false;
+ }
+ }
+}
+
static bool wacom_is_led_toggled(struct wacom *wacom, int button_count,
int mask, int group)
{
int button_per_group;
/*
- * 24HD and 21UX2 have LED group 1 to the left and LED group 0
+ * 21UX2 has LED group 1 to the left and LED group 0
* to the right. We need to reverse the group to match this
* historical behavior.
*/
- if (wacom->wacom_wac.features.type == WACOM_24HD ||
- wacom->wacom_wac.features.type == WACOM_21UX2)
+ if (wacom->wacom_wac.features.type == WACOM_21UX2)
group = 1 - group;
button_per_group = button_count/wacom->led.count;
@@ -2789,6 +2818,9 @@ static void wacom_update_led(struct wacom *wacom, int button_count, int mask,
int cur;
bool pressed;
+ if (wacom->wacom_wac.features.type == WACOM_24HD)
+ return wacom_24hd_update_leds(wacom, mask, group);
+
pressed = wacom_is_led_toggled(wacom, button_count, mask, group);
cur = wacom->led.groups[group].select;
--
2.5.5
--
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