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Message-ID: <20240325054938.489732-2-luke@ljones.dev>
Date: Mon, 25 Mar 2024 18:49:30 +1300
From: "Luke D. Jones" <luke@...nes.dev>
To: hdegoede@...hat.com
Cc: corentin.chary@...il.com,
ilpo.jarvinen@...ux.intel.com,
platform-driver-x86@...r.kernel.org,
linux-kernel@...r.kernel.org,
"Luke D. Jones" <luke@...nes.dev>
Subject: [PATCH 1/9] platform/x86: asus-wmi: add support for 2024 ROG Mini-LED
Support the 2024 mini-led backlight and adjust the related functions
to select the relevant dev-id. Also add `available_mini_led_mode` to the
platform sysfs since the available mini-led levels can be different.
Signed-off-by: Luke D. Jones <luke@...nes.dev>
---
.../ABI/testing/sysfs-platform-asus-wmi | 8 ++
drivers/platform/x86/asus-wmi.c | 74 +++++++++++++++++--
include/linux/platform_data/x86/asus-wmi.h | 1 +
3 files changed, 76 insertions(+), 7 deletions(-)
diff --git a/Documentation/ABI/testing/sysfs-platform-asus-wmi b/Documentation/ABI/testing/sysfs-platform-asus-wmi
index 8a7e25bde085..61a745d2476f 100644
--- a/Documentation/ABI/testing/sysfs-platform-asus-wmi
+++ b/Documentation/ABI/testing/sysfs-platform-asus-wmi
@@ -126,6 +126,14 @@ Description:
Change the mini-LED mode:
* 0 - Single-zone,
* 1 - Multi-zone
+ * 2 - Multi-zone strong (available on newer generation mini-led)
+
+What: /sys/devices/platform/<platform>/available_mini_led_mode
+Date: Jun 2023
+KernelVersion: 6.10
+Contact: "Luke Jones" <luke@...nes.dev>
+Description:
+ List the available mini-led modes.
What: /sys/devices/platform/<platform>/ppt_pl1_spl
Date: Jun 2023
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 18be35fdb381..54ce0fb26f42 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -297,6 +297,7 @@ struct asus_wmi {
bool panel_overdrive_available;
bool mini_led_mode_available;
+ u32 mini_led_dev_id;
struct hotplug_slot hotplug_slot;
struct mutex hotplug_lock;
@@ -2109,10 +2110,27 @@ static ssize_t mini_led_mode_show(struct device *dev,
struct asus_wmi *asus = dev_get_drvdata(dev);
int result;
- result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_MINI_LED_MODE);
- if (result < 0)
- return result;
+ result = asus_wmi_get_devstate_simple(asus, asus->mini_led_dev_id);
+ /* Remap the mode values to match previous generation mini-led.
+ * Some BIOSes return -19 instead of 2, which is "mini-LED off", this
+ * appears to be a BIOS bug.
+ */
+ if (asus->mini_led_dev_id == ASUS_WMI_DEVID_MINI_LED_MODE2) {
+ switch (result) {
+ case 0:
+ result = 1;
+ break;
+ case 1:
+ result = 2;
+ break;
+ case 2:
+ case -19:
+ result = 0;
+ }
+ } else if (result < 0) {
+ return result;
+ }
return sysfs_emit(buf, "%d\n", result);
}
@@ -2129,11 +2147,28 @@ static ssize_t mini_led_mode_store(struct device *dev,
if (result)
return result;
- if (mode > 1)
+ if (mode > 1 && asus->mini_led_dev_id == ASUS_WMI_DEVID_MINI_LED_MODE)
return -EINVAL;
+ if (mode > 2 && asus->mini_led_dev_id == ASUS_WMI_DEVID_MINI_LED_MODE2)
+ return -EINVAL;
+ /*
+ * Remap the mode values so expected behaviour is the same as the last
+ * generation of mini-LED
+ */
+ if (asus->mini_led_dev_id == ASUS_WMI_DEVID_MINI_LED_MODE2) {
+ switch (mode) {
+ case 0:
+ mode = 2;
+ break;
+ case 1:
+ mode = 0;
+ break;
+ case 2:
+ mode = 1;
+ }
+ }
- err = asus_wmi_set_devstate(ASUS_WMI_DEVID_MINI_LED_MODE, mode, &result);
-
+ err = asus_wmi_set_devstate(asus->mini_led_dev_id, mode, &result);
if (err) {
pr_warn("Failed to set mini-LED: %d\n", err);
return err;
@@ -2150,6 +2185,23 @@ static ssize_t mini_led_mode_store(struct device *dev,
}
static DEVICE_ATTR_RW(mini_led_mode);
+static ssize_t available_mini_led_mode_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct asus_wmi *asus = dev_get_drvdata(dev);
+
+ switch (asus->mini_led_dev_id) {
+ case ASUS_WMI_DEVID_MINI_LED_MODE:
+ return sysfs_emit(buf, "0 1\n");
+ case ASUS_WMI_DEVID_MINI_LED_MODE2:
+ return sysfs_emit(buf, "0 1 2\n");
+ }
+
+ return sysfs_emit(buf, "0\n");
+}
+
+static DEVICE_ATTR_RO(available_mini_led_mode);
+
/* Quirks *********************************************************************/
static void asus_wmi_set_xusb2pr(struct asus_wmi *asus)
@@ -4174,6 +4226,7 @@ static struct attribute *platform_attributes[] = {
&dev_attr_nv_temp_target.attr,
&dev_attr_panel_od.attr,
&dev_attr_mini_led_mode.attr,
+ &dev_attr_available_mini_led_mode.attr,
NULL
};
@@ -4496,10 +4549,17 @@ static int asus_wmi_add(struct platform_device *pdev)
asus->nv_dyn_boost_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_NV_DYN_BOOST);
asus->nv_temp_tgt_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_NV_THERM_TARGET);
asus->panel_overdrive_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_PANEL_OD);
- asus->mini_led_mode_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_MINI_LED_MODE);
asus->ally_mcu_usb_switch = acpi_has_method(NULL, ASUS_USB0_PWR_EC0_CSEE)
&& dmi_match(DMI_BOARD_NAME, "RC71L");
+ if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_MINI_LED_MODE)) {
+ asus->mini_led_mode_available = true;
+ asus->mini_led_dev_id = ASUS_WMI_DEVID_MINI_LED_MODE;
+ } else if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_MINI_LED_MODE2)) {
+ asus->mini_led_mode_available = true;
+ asus->mini_led_dev_id = ASUS_WMI_DEVID_MINI_LED_MODE2;
+ }
+
err = fan_boost_mode_check_present(asus);
if (err)
goto fail_fan_boost_mode;
diff --git a/include/linux/platform_data/x86/asus-wmi.h b/include/linux/platform_data/x86/asus-wmi.h
index ab1c7deff118..9cadce10ad9a 100644
--- a/include/linux/platform_data/x86/asus-wmi.h
+++ b/include/linux/platform_data/x86/asus-wmi.h
@@ -71,6 +71,7 @@
#define ASUS_WMI_DEVID_LID_FLIP 0x00060062
#define ASUS_WMI_DEVID_LID_FLIP_ROG 0x00060077
#define ASUS_WMI_DEVID_MINI_LED_MODE 0x0005001E
+#define ASUS_WMI_DEVID_MINI_LED_MODE2 0x0005002E
/* Storage */
#define ASUS_WMI_DEVID_CARDREADER 0x00080013
--
2.44.0
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