Input: wacom - add Intuos5 Touch Ring LED support
The Touch Ring LEDs on Intuos5 tablets use a different report
format which supports only 4 levels of brightness. We remap
the 7-bit value obtained from sysfs to an appropriate value
for the tablet. Control of the crop mark LEDs (new to the I5)
is left for a later patch.
Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c
index 19ba586..d771338 100644
--- a/drivers/input/tablet/wacom_sys.c
+++ b/drivers/input/tablet/wacom_sys.c
@@ -574,23 +574,39 @@
static int wacom_led_control(struct wacom *wacom)
{
unsigned char *buf;
- int retval, led = 0;
+ int retval;
buf = kzalloc(9, GFP_KERNEL);
if (!buf)
return -ENOMEM;
- if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
- wacom->wacom_wac.features.type == WACOM_24HD)
- led = (wacom->led.select[1] << 4) | 0x40;
+ if (wacom->wacom_wac.features.type >= INTUOS5S &&
+ wacom->wacom_wac.features.type <= INTUOS5L) {
+ /*
+ * Touch Ring and crop mark LED luminance may take on
+ * one of four values:
+ * 0 = Low; 1 = Medium; 2 = High; 3 = Off
+ */
+ int ring_led = wacom->led.select[0] & 0x03;
+ int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;
+ int crop_lum = 0;
- led |= wacom->led.select[0] | 0x4;
+ buf[0] = WAC_CMD_LED_CONTROL;
+ buf[1] = (crop_lum << 4) | (ring_lum << 2) | (ring_led);
+ }
+ else {
+ int led = wacom->led.select[0] | 0x4;
- buf[0] = WAC_CMD_LED_CONTROL;
- buf[1] = led;
- buf[2] = wacom->led.llv;
- buf[3] = wacom->led.hlv;
- buf[4] = wacom->led.img_lum;
+ if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
+ wacom->wacom_wac.features.type == WACOM_24HD)
+ led |= (wacom->led.select[1] << 4) | 0x40;
+
+ buf[0] = WAC_CMD_LED_CONTROL;
+ buf[1] = led;
+ buf[2] = wacom->led.llv;
+ buf[3] = wacom->led.hlv;
+ buf[4] = wacom->led.img_lum;
+ }
retval = wacom_set_report(wacom->intf, 0x03, WAC_CMD_LED_CONTROL,
buf, 9, WAC_CMD_RETRIES);
@@ -783,6 +799,17 @@
.attrs = intuos4_led_attrs,
};
+static struct attribute *intuos5_led_attrs[] = {
+ &dev_attr_status0_luminance.attr,
+ &dev_attr_status_led0_select.attr,
+ NULL
+};
+
+static struct attribute_group intuos5_led_attr_group = {
+ .name = "wacom_led",
+ .attrs = intuos5_led_attrs,
+};
+
static int wacom_initialize_leds(struct wacom *wacom)
{
int error;
@@ -812,6 +839,19 @@
&cintiq_led_attr_group);
break;
+ case INTUOS5S:
+ case INTUOS5:
+ case INTUOS5L:
+ wacom->led.select[0] = 0;
+ wacom->led.select[1] = 0;
+ wacom->led.llv = 32;
+ wacom->led.hlv = 0;
+ wacom->led.img_lum = 0;
+
+ error = sysfs_create_group(&wacom->intf->dev.kobj,
+ &intuos5_led_attr_group);
+ break;
+
default:
return 0;
}
@@ -840,6 +880,13 @@
sysfs_remove_group(&wacom->intf->dev.kobj,
&cintiq_led_attr_group);
break;
+
+ case INTUOS5S:
+ case INTUOS5:
+ case INTUOS5L:
+ sysfs_remove_group(&wacom->intf->dev.kobj,
+ &intuos5_led_attr_group);
+ break;
}
}