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From c4f348a575a9bf02eb705d5e83765132dc12fde4 Mon Sep 17 00:00:00 2001
From: "Luke D. Jones" <luke@ljones.dev>
Date: Sun, 6 Oct 2024 21:22:40 +1300
Subject: [PATCH 17/29] hid-asus-ally: add JS response curves
Signed-off-by: Luke D. Jones <luke@ljones.dev>
---
drivers/hid/hid-asus-ally.c | 103 ++++++++++++++++++++++++++++++++++++
drivers/hid/hid-asus-ally.h | 38 +++++++++++++
2 files changed, 141 insertions(+)
diff --git a/drivers/hid/hid-asus-ally.c b/drivers/hid/hid-asus-ally.c
index ff1c2cf61e66..aad965e069ee 100644
--- a/drivers/hid/hid-asus-ally.c
+++ b/drivers/hid/hid-asus-ally.c
@@ -5,10 +5,12 @@
* Copyright (c) 2023 Luke Jones <luke@ljones.dev>
*/
+#include "linux/compiler_attributes.h"
#include "linux/device.h"
#include <linux/platform_data/x86/asus-wmi.h>
#include <linux/platform_device.h>
#include "linux/pm.h"
+#include "linux/printk.h"
#include "linux/slab.h"
#include <linux/hid.h>
#include <linux/types.h>
@@ -265,6 +267,17 @@ struct deadzone {
u8 outer;
};
+struct response_curve {
+ uint8_t move_pct_1;
+ uint8_t response_pct_1;
+ uint8_t move_pct_2;
+ uint8_t response_pct_2;
+ uint8_t move_pct_3;
+ uint8_t response_pct_3;
+ uint8_t move_pct_4;
+ uint8_t response_pct_4;
+} __packed;
+
/* ROG Ally has many settings related to the gamepad, all using the same n-key endpoint */
struct ally_gamepad_cfg {
struct hid_device *hdev;
@@ -289,6 +302,9 @@ struct ally_gamepad_cfg {
/* anti-deadzones */
u8 ls_adz; // left stick
u8 rs_adz; // right stick
+ /* joystick response curves */
+ struct response_curve ls_rc;
+ struct response_curve rs_rc;
};
/* The hatswitch outputs integers, we use them to index this X|Y pair */
@@ -712,10 +728,85 @@ static ssize_t axis_xy_right_anti_deadzone_store(struct device *dev,
}
ALLY_DEVICE_ATTR_RW(axis_xy_right_anti_deadzone, anti_deadzone);
+/* JS RESPONSE CURVES *****************************************************************************/
+static void _gamepad_set_js_response_curves_default(struct ally_gamepad_cfg *ally_cfg)
+{
+ struct response_curve *js1_rc = &ally_cfg->ls_rc;
+ struct response_curve *js2_rc = &ally_cfg->rs_rc;
+ js1_rc->move_pct_1 = js2_rc->move_pct_1 = 0x16; // 25%
+ js1_rc->move_pct_2 = js2_rc->move_pct_2 = 0x32; // 50%
+ js1_rc->move_pct_3 = js2_rc->move_pct_3 = 0x48; // 75%
+ js1_rc->move_pct_4 = js2_rc->move_pct_4 = 0x64; // 100%
+ js1_rc->response_pct_1 = js2_rc->response_pct_1 = 0x16;
+ js1_rc->response_pct_2 = js2_rc->response_pct_2 = 0x32;
+ js1_rc->response_pct_3 = js2_rc->response_pct_3 = 0x48;
+ js1_rc->response_pct_4 = js2_rc->response_pct_4 = 0x64;
+}
+
+static ssize_t _gamepad_apply_response_curves(struct hid_device *hdev,
+ struct ally_gamepad_cfg *ally_cfg)
+{
+ u8 *hidbuf;
+ int 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;
+ memcpy(&hidbuf[2], &ally_cfg->ls_rc, sizeof(ally_cfg->ls_rc));
+
+ ret = ally_gamepad_check_ready(hdev);
+ if (ret < 0)
+ goto report_fail;
+
+ hidbuf[4] = 0x02;
+ memcpy(&hidbuf[5], &ally_cfg->rs_rc, sizeof(ally_cfg->rs_rc));
+
+ ret = ally_gamepad_check_ready(hdev);
+ if (ret < 0)
+ goto report_fail;
+
+ ret = asus_dev_set_report(hdev, hidbuf, FEATURE_ROG_ALLY_REPORT_SIZE);
+ if (ret < 0)
+ goto report_fail;
+
+report_fail:
+ kfree(hidbuf);
+ return ret;
+}
+
+ALLY_JS_RC_POINT(axis_xy_left, move, 1);
+ALLY_JS_RC_POINT(axis_xy_left, move, 2);
+ALLY_JS_RC_POINT(axis_xy_left, move, 3);
+ALLY_JS_RC_POINT(axis_xy_left, move, 4);
+ALLY_JS_RC_POINT(axis_xy_left, response, 1);
+ALLY_JS_RC_POINT(axis_xy_left, response, 2);
+ALLY_JS_RC_POINT(axis_xy_left, response, 3);
+ALLY_JS_RC_POINT(axis_xy_left, response, 4);
+
+ALLY_JS_RC_POINT(axis_xy_right, move, 1);
+ALLY_JS_RC_POINT(axis_xy_right, move, 2);
+ALLY_JS_RC_POINT(axis_xy_right, move, 3);
+ALLY_JS_RC_POINT(axis_xy_right, move, 4);
+ALLY_JS_RC_POINT(axis_xy_right, response, 1);
+ALLY_JS_RC_POINT(axis_xy_right, response, 2);
+ALLY_JS_RC_POINT(axis_xy_right, response, 3);
+ALLY_JS_RC_POINT(axis_xy_right, response, 4);
+
static struct attribute *axis_xy_left_attrs[] = {
&dev_attr_axis_xy_left_anti_deadzone.attr,
&dev_attr_axis_xy_left_deadzone.attr,
&dev_attr_axis_xyz_deadzone_index.attr,
+ &dev_attr_axis_xy_left_move_1.attr,
+ &dev_attr_axis_xy_left_move_2.attr,
+ &dev_attr_axis_xy_left_move_3.attr,
+ &dev_attr_axis_xy_left_move_4.attr,
+ &dev_attr_axis_xy_left_response_1.attr,
+ &dev_attr_axis_xy_left_response_2.attr,
+ &dev_attr_axis_xy_left_response_3.attr,
+ &dev_attr_axis_xy_left_response_4.attr,
NULL
};
static const struct attribute_group axis_xy_left_attr_group = {
@@ -727,6 +818,14 @@ static struct attribute *axis_xy_right_attrs[] = {
&dev_attr_axis_xy_right_anti_deadzone.attr,
&dev_attr_axis_xy_right_deadzone.attr,
&dev_attr_axis_xyz_deadzone_index.attr,
+ &dev_attr_axis_xy_right_move_1.attr,
+ &dev_attr_axis_xy_right_move_2.attr,
+ &dev_attr_axis_xy_right_move_3.attr,
+ &dev_attr_axis_xy_right_move_4.attr,
+ &dev_attr_axis_xy_right_response_1.attr,
+ &dev_attr_axis_xy_right_response_2.attr,
+ &dev_attr_axis_xy_right_response_3.attr,
+ &dev_attr_axis_xy_right_response_4.attr,
NULL
};
static const struct attribute_group axis_xy_right_attr_group = {
@@ -922,6 +1021,9 @@ static ssize_t _gamepad_apply_all(struct hid_device *hdev, struct ally_gamepad_c
if (ret < 0)
return ret;
ret = _gamepad_apply_js_ADZ(hdev, ally_cfg);
+ if (ret < 0)
+ return ret;
+ ret =_gamepad_apply_response_curves(hdev, ally_cfg);
if (ret < 0)
return ret;
@@ -1169,6 +1271,7 @@ static struct ally_gamepad_cfg *ally_gamepad_cfg_create(struct hid_device *hdev)
ally_cfg->vibration_intensity[1] = 0x64;
_gamepad_set_deadzones_default(ally_cfg);
_gamepad_set_anti_deadzones_default(ally_cfg);
+ _gamepad_set_js_response_curves_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 69f59592dd50..c83817589082 100644
--- a/drivers/hid/hid-asus-ally.h
+++ b/drivers/hid/hid-asus-ally.h
@@ -28,6 +28,7 @@ enum xpad_cmd {
xpad_cmd_set_leds = 0x08,
xpad_cmd_check_ready = 0x0A,
xpad_cmd_set_turbo = 0x0F,
+ xpad_cmd_set_response_curve = 0x13,
xpad_cmd_set_adz = 0x18,
};
@@ -39,6 +40,7 @@ enum xpad_cmd_len {
xpad_cmd_len_vibe_intensity = 0x02,
xpad_cmd_len_leds = 0x0C,
xpad_cmd_len_turbo = 0x20,
+ xpad_cmd_len_response_curve = 0x09,
xpad_cmd_len_adz = 0x02,
};
@@ -309,6 +311,42 @@ enum btn_pair_index {
ALLY_DEADZONE_STORE(_fname##_deadzone, _mname); \
ALLY_DEVICE_ATTR_RW(_fname##_deadzone, deadzone)
+/* response curve macros */
+#define ALLY_RESP_CURVE_SHOW(_fname, _mname) \
+static ssize_t _fname##_show(struct device *dev, \
+ struct device_attribute *attr, \
+ char *buf) \
+ { \
+ struct ally_gamepad_cfg *ally_cfg = drvdata.gamepad_cfg; \
+ if (!drvdata.gamepad_cfg) \
+ return -ENODEV; \
+ return sysfs_emit(buf, "%d\n", ally_cfg->ls_rc._mname); \
+ }
+
+#define ALLY_RESP_CURVE_STORE(_fname, _mname) \
+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; \
+ int ret, val; \
+ if (!drvdata.gamepad_cfg) \
+ return -ENODEV; \
+ ret = kstrtoint(buf, 0, &val); \
+ if (ret) \
+ return ret; \
+ if (val < 0 || val > 100) \
+ return -EINVAL; \
+ ally_cfg->ls_rc._mname = val; \
+ return count; \
+ }
+
+/* _point_n must start at 1 */
+#define ALLY_JS_RC_POINT(_fname, _mname, _num) \
+ ALLY_RESP_CURVE_SHOW(_fname##_##_mname##_##_num, _mname##_pct_##_num); \
+ ALLY_RESP_CURVE_STORE(_fname##_##_mname##_##_num, _mname##_pct_##_num); \
+ ALLY_DEVICE_ATTR_RW(_fname##_##_mname##_##_num, curve_##_mname##_pct_##_num)
+
#define ALLY_BTN_ATTRS_GROUP(_name, _fname) \
static struct attribute *_fname##_attrs[] = { \
&dev_attr_##_fname.attr, \
--
2.48.1
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