diff options
author | Benjamin Tissoires <benjamin.tissoires@redhat.com> | 2016-07-13 16:06:14 (GMT) |
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committer | Jiri Kosina <jkosina@suse.cz> | 2016-08-05 11:39:21 (GMT) |
commit | 6a06281e2bfb6f59aa3290c459981471b4940a39 (patch) | |
tree | 98163dcd6116018bbb2d58f837751331ad3e085e /drivers | |
parent | 5a0fe8abd169be4f2e1f73ad851419d502b5a832 (diff) | |
download | linux-6a06281e2bfb6f59aa3290c459981471b4940a39.tar.xz |
HID: wacom: leds: handle Cintiq 24HD leds buttons
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@redhat.com>
Acked-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/hid/wacom_wac.c | 38 |
1 files 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; |