[PATCH 2/3] hwmon: (asus_rog_ryujin) Add ROG Ryujin III support

[Arie Miller <renari@arimil.com>]

The ROG Ryujin III uses different report offsets and a different
cooler-duty channel from the Ryujin II. It also lacks the separate
external fan controller supplied with the older model.

Add model data and USB IDs for the Extreme and EVA Edition variants.
Skip controller commands and hide the unavailable controller hwmon
channels for these devices. Update the driver documentation, Kconfig
text, and module description accordingly.

Link: https://github.com/aleksamagicka/asus_rog_ryujin-hwmon/pull/9
Assisted-by: Codex:gpt-5.6-sol sparse
Signed-off-by: Arie Miller <renari@arimil.com>
---
 Documentation/hwmon/asus_rog_ryujin.rst | 24 +++++++++++++-----------
 drivers/hwmon/Kconfig                   |  4 ++--
 drivers/hwmon/asus_rog_ryujin.c         | 18 ++++++++++++++++--
 3 files changed, 31 insertions(+), 15 deletions(-)

diff --git a/Documentation/hwmon/asus_rog_ryujin.rst b/Documentation/hwmon/asus_rog_ryujin.rst
index 9f77da070022..cfdfe3712f19 100644
--- a/Documentation/hwmon/asus_rog_ryujin.rst
+++ b/Documentation/hwmon/asus_rog_ryujin.rst
@@ -6,6 +6,8 @@ Kernel driver asus_rog_ryujin
 Supported devices:
 
 * ASUS ROG RYUJIN II 360
+* ASUS ROG RYUJIN III EXTREME
+* ASUS ROG RYUJIN III EVA EDITION
 
 Author: Aleksa Savic
 
@@ -16,10 +18,10 @@ This driver enables hardware monitoring support for the listed ASUS ROG RYUJIN
 all-in-one CPU liquid coolers. Available sensors are pump, internal and external
 (controller) fan speed in RPM, their duties in PWM, as well as coolant temperature.
 
-Attaching external fans to the controller is optional and allows them to be
-controlled from the device. If not connected, the fan-related sensors will
-report zeroes. The controller is a separate hardware unit that comes bundled
-with the AIO and connects to it to allow fan control.
+The RYUJIN II includes a separate external fan controller. Attaching fans to
+the controller is optional and allows them to be controlled from the device.
+If not connected, the controller-related sensors will report zeroes. The
+RYUJIN III does not expose these controller channels.
 
 The addressable LCD screen is not supported in this driver and should
 be controlled through userspace tools.
@@ -33,15 +35,15 @@ supports hot swapping.
 Sysfs entries
 -------------
 
-=========== =============================================
+=========== ==========================================================
 fan1_input  Pump speed (in rpm)
 fan2_input  Internal fan speed (in rpm)
-fan3_input  External (controller) fan 1 speed (in rpm)
-fan4_input  External (controller) fan 2 speed (in rpm)
-fan5_input  External (controller) fan 3 speed (in rpm)
-fan6_input  External (controller) fan 4 speed (in rpm)
+fan3_input  External (controller) fan 1 speed (in rpm, RYUJIN II only)
+fan4_input  External (controller) fan 2 speed (in rpm, RYUJIN II only)
+fan5_input  External (controller) fan 3 speed (in rpm, RYUJIN II only)
+fan6_input  External (controller) fan 4 speed (in rpm, RYUJIN II only)
 temp1_input Coolant temperature (in millidegrees Celsius)
 pwm1        Pump duty
 pwm2        Internal fan duty
-pwm3        External (controller) fan duty
-=========== =============================================
+pwm3        External (controller) fan duty (RYUJIN II only)
+=========== ==========================================================
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index e60bfc31bbad..c7640fcb32e4 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -293,11 +293,11 @@ config SENSORS_ASC7621
 	  will be called asc7621.
 
 config SENSORS_ASUS_ROG_RYUJIN
-	tristate "ASUS ROG RYUJIN II 360 hardware monitoring driver"
+	tristate "ASUS ROG RYUJIN hardware monitoring driver"
 	depends on HID
 	help
 	  If you say yes here you get support for the fans and sensors of
-	  the ASUS ROG RYUJIN II 360 AIO CPU liquid cooler.
+	  supported ASUS ROG RYUJIN II and III AIO CPU liquid coolers.
 
 	  This driver can also be built as a module. If so, the module
 	  will be called asus_rog_ryujin.
diff --git a/drivers/hwmon/asus_rog_ryujin.c b/drivers/hwmon/asus_rog_ryujin.c
index b86b87e33615..5bc60c6036de 100644
--- a/drivers/hwmon/asus_rog_ryujin.c
+++ b/drivers/hwmon/asus_rog_ryujin.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
- * hwmon driver for Asus ROG Ryujin II 360 AIO cooler.
+ * hwmon driver for Asus ROG Ryujin AIO coolers.
  *
  * Copyright 2024 Aleksa Savic <savicaleksa83@gmail.com>
  */
@@ -17,6 +17,8 @@
 
 #define USB_VENDOR_ID_ASUS_ROG		0x0b05
 #define USB_PRODUCT_ID_RYUJIN_AIO	0x1988	/* ASUS ROG RYUJIN II 360 */
+#define USB_PRODUCT_ID_RYUJIN_III_EXTREME	0x1bcb
+#define USB_PRODUCT_ID_RYUJIN_III_EVA		0x1ade
 
 struct rog_ryujin_device_info {
 	u8 temp_offset;
@@ -34,6 +36,14 @@ static const struct rog_ryujin_device_info rog_ryujin_ii_360_info = {
 	.has_controller = true,
 };
 
+static const struct rog_ryujin_device_info rog_ryujin_iii_info = {
+	.temp_offset = 5,
+	.pump_speed_offset = 7,
+	.fan_speed_offset = 10,
+	.duty_channel = 1,
+	.has_controller = false,
+};
+
 #define STATUS_VALIDITY		1500	/* ms */
 #define MAX_REPORT_LENGTH	65
 
@@ -573,6 +583,10 @@ static void rog_ryujin_remove(struct hid_device *hdev)
 static const struct hid_device_id rog_ryujin_table[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUS_ROG, USB_PRODUCT_ID_RYUJIN_AIO),
 	  .driver_data = (kernel_ulong_t)&rog_ryujin_ii_360_info },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUS_ROG, USB_PRODUCT_ID_RYUJIN_III_EXTREME),
+	  .driver_data = (kernel_ulong_t)&rog_ryujin_iii_info },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUS_ROG, USB_PRODUCT_ID_RYUJIN_III_EVA),
+	  .driver_data = (kernel_ulong_t)&rog_ryujin_iii_info },
 	{ }
 };
 
@@ -602,4 +616,4 @@ module_exit(rog_ryujin_exit);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Aleksa Savic <savicaleksa83@gmail.com>");
-MODULE_DESCRIPTION("Hwmon driver for Asus ROG Ryujin II 360 AIO cooler");
+MODULE_DESCRIPTION("Hwmon driver for Asus ROG Ryujin AIO coolers");
-- 
2.55.0