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From 5365fcd69c7a4bba733b8bc6f4272b7b83f0fe13 Mon Sep 17 00:00:00 2001
From: "Luke D. Jones" <luke@ljones.dev>
Date: Sat, 5 Oct 2024 21:32:41 +1300
Subject: [PATCH 14/29] hid-asus-ally: add JS deadzones
Signed-off-by: Luke D. Jones <luke@ljones.dev>
---
drivers/hid/hid-asus-ally.c | 84 +++++++++++++++++++++++++++++++++++++
drivers/hid/hid-asus-ally.h | 39 +++++++++++++++++
2 files changed, 123 insertions(+)
diff --git a/drivers/hid/hid-asus-ally.c b/drivers/hid/hid-asus-ally.c
index 8b40b806631c..64f4b466f0bb 100644
--- a/drivers/hid/hid-asus-ally.c
+++ b/drivers/hid/hid-asus-ally.c
@@ -260,6 +260,11 @@ struct btn_mapping {
struct btn_data btn_m2;
};
+struct deadzone {
+ u8 inner;
+ u8 outer;
+};
+
/* ROG Ally has many settings related to the gamepad, all using the same n-key endpoint */
struct ally_gamepad_cfg {
struct hid_device *hdev;
@@ -275,6 +280,10 @@ struct ally_gamepad_cfg {
* max: 64
*/
u8 vibration_intensity[2];
+
+ /* deadzones */
+ struct deadzone ls_dz; // left stick
+ struct deadzone rs_dz; // right stick
};
/* The hatswitch outputs integers, we use them to index this X|Y pair */
@@ -529,6 +538,75 @@ static ssize_t gamepad_vibration_intensity_store(struct device *dev,
ALLY_DEVICE_ATTR_RW(gamepad_vibration_intensity, vibration_intensity);
+/* ANALOGUE DEADZONES *****************************************************************************/
+static ssize_t _gamepad_apply_deadzones(struct hid_device *hdev,
+ struct ally_gamepad_cfg *ally_cfg)
+{
+ u8 *hidbuf;
+ int ret;
+
+ ret = ally_gamepad_check_ready(hdev);
+ if (ret < 0)
+ return ret;
+
+ hidbuf = kzalloc(FEATURE_ROG_ALLY_REPORT_SIZE, GFP_KERNEL);
+ if (!hidbuf)
+ return -ENOMEM;
+
+ hidbuf[0] = FEATURE_ROG_ALLY_REPORT_ID;
+ hidbuf[1] = FEATURE_ROG_ALLY_CODE_PAGE;
+ hidbuf[2] = xpad_cmd_set_js_dz;
+ hidbuf[3] = xpad_cmd_len_deadzone;
+ hidbuf[4] = ally_cfg->ls_dz.inner;
+ hidbuf[5] = ally_cfg->ls_dz.outer;
+ hidbuf[6] = ally_cfg->rs_dz.inner;
+ hidbuf[7] = ally_cfg->rs_dz.outer;
+
+ ret = asus_dev_set_report(hdev, hidbuf, FEATURE_ROG_ALLY_REPORT_SIZE);
+
+ kfree(hidbuf);
+ return ret;
+}
+
+static void _gamepad_set_deadzones_default(struct ally_gamepad_cfg *ally_cfg)
+{
+ ally_cfg->ls_dz.inner = 0x00;
+ ally_cfg->ls_dz.outer = 0x64;
+ ally_cfg->rs_dz.inner = 0x00;
+ ally_cfg->rs_dz.outer = 0x64;
+}
+
+static ssize_t axis_xyz_deadzone_index_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "inner outer\n");
+}
+
+ALLY_DEVICE_ATTR_RO(axis_xyz_deadzone_index, deadzone_index);
+
+ALLY_DEADZONES(axis_xy_left, ls_dz);
+ALLY_DEADZONES(axis_xy_right, rs_dz);
+
+static struct attribute *axis_xy_left_attrs[] = {
+ &dev_attr_axis_xy_left_deadzone.attr,
+ &dev_attr_axis_xyz_deadzone_index.attr,
+ NULL
+};
+static const struct attribute_group axis_xy_left_attr_group = {
+ .name = "axis_xy_left",
+ .attrs = axis_xy_left_attrs,
+};
+
+static struct attribute *axis_xy_right_attrs[] = {
+ &dev_attr_axis_xy_right_deadzone.attr,
+ &dev_attr_axis_xyz_deadzone_index.attr,
+ NULL
+};
+static const struct attribute_group axis_xy_right_attr_group = {
+ .name = "axis_xy_right",
+ .attrs = axis_xy_right_attrs,
+};
+
/* A HID packet conatins mappings for two buttons: btn1, btn1_macro, btn2, btn2_macro */
static void _btn_pair_to_hid_pkt(struct ally_gamepad_cfg *ally_cfg,
enum btn_pair_index pair,
@@ -691,6 +769,9 @@ static ssize_t _gamepad_apply_all(struct hid_device *hdev, struct ally_gamepad_c
if (ret < 0)
return ret;
ret = _gamepad_apply_turbo(hdev, ally_cfg);
+ if (ret < 0)
+ return ret;
+ ret = _gamepad_apply_deadzones(hdev, ally_cfg);
if (ret < 0)
return ret;
@@ -867,6 +948,8 @@ static const struct attribute_group ally_controller_attr_group = {
static const struct attribute_group *gamepad_device_attr_groups[] = {
&ally_controller_attr_group,
+ &axis_xy_left_attr_group,
+ &axis_xy_right_attr_group,
&btn_mapping_m1_attr_group,
&btn_mapping_m2_attr_group,
&btn_mapping_a_attr_group,
@@ -932,6 +1015,7 @@ static struct ally_gamepad_cfg *ally_gamepad_cfg_create(struct hid_device *hdev)
ally_cfg->vibration_intensity[0] = 0x64;
ally_cfg->vibration_intensity[1] = 0x64;
+ _gamepad_set_deadzones_default(ally_cfg);
drvdata.gamepad_cfg = ally_cfg; // Must asign before attr group setup
if (sysfs_create_groups(&hdev->dev.kobj, gamepad_device_attr_groups)) {
diff --git a/drivers/hid/hid-asus-ally.h b/drivers/hid/hid-asus-ally.h
index 6ac79ad3c5f2..3dc14a5226f3 100644
--- a/drivers/hid/hid-asus-ally.h
+++ b/drivers/hid/hid-asus-ally.h
@@ -22,6 +22,7 @@ enum xpad_mode {
enum xpad_cmd {
xpad_cmd_set_mode = 0x01,
xpad_cmd_set_mapping = 0x02,
+ xpad_cmd_set_js_dz = 0x04, /* deadzones */
xpad_cmd_set_vibe_intensity = 0x06,
xpad_cmd_set_leds = 0x08,
xpad_cmd_check_ready = 0x0A,
@@ -32,6 +33,7 @@ enum xpad_cmd {
enum xpad_cmd_len {
xpad_cmd_len_mode = 0x01,
xpad_cmd_len_mapping = 0x2c,
+ xpad_cmd_len_deadzone = 0x04,
xpad_cmd_len_vibe_intensity = 0x02,
xpad_cmd_len_leds = 0x0C,
xpad_cmd_len_turbo = 0x20,
@@ -267,6 +269,43 @@ enum btn_pair_index {
return count; \
}
+#define ALLY_DEADZONE_SHOW(_fname, _axis_name) \
+ static ssize_t _fname##_show(struct device *dev, \
+ struct device_attribute *attr, char *buf) \
+ { \
+ struct ally_gamepad_cfg *ally_cfg = drvdata.gamepad_cfg; \
+ struct deadzone *dz; \
+ if (!drvdata.gamepad_cfg) \
+ return -ENODEV; \
+ dz = &ally_cfg->_axis_name; \
+ return sysfs_emit(buf, "%d %d\n", dz->inner, dz->outer); \
+ }
+
+#define ALLY_DEADZONE_STORE(_fname, _axis_name) \
+ static ssize_t _fname##_store(struct device *dev, \
+ struct device_attribute *attr, \
+ const char *buf, size_t count) \
+ { \
+ struct ally_gamepad_cfg *ally_cfg = drvdata.gamepad_cfg; \
+ struct hid_device *hdev = to_hid_device(dev); \
+ u32 inner, outer; \
+ if (!drvdata.gamepad_cfg) \
+ return -ENODEV; \
+ if (sscanf(buf, "%d %d", &inner, &outer) != 2) \
+ return -EINVAL; \
+ if (inner > 64 || outer > 64 || inner > outer) \
+ return -EINVAL; \
+ ally_cfg->_axis_name.inner = inner; \
+ ally_cfg->_axis_name.outer = outer; \
+ _gamepad_apply_deadzones(hdev, ally_cfg); \
+ return count; \
+ }
+
+#define ALLY_DEADZONES(_fname, _mname) \
+ ALLY_DEADZONE_SHOW(_fname##_deadzone, _mname); \
+ ALLY_DEADZONE_STORE(_fname##_deadzone, _mname); \
+ ALLY_DEVICE_ATTR_RW(_fname##_deadzone, deadzone)
+
#define ALLY_BTN_ATTRS_GROUP(_name, _fname) \
static struct attribute *_fname##_attrs[] = { \
&dev_attr_##_fname.attr, \
--
2.48.1
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