linux-kernel - [PATCH 2/2] platform/apple-gmux: use apple

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Message-ID: <20260206125641.12983-3-atharvatiwarilinuxdev@gmail.com>
Date: Fri,  6 Feb 2026 12:56:22 +0000
From: Atharva Tiwari <atharvatiwarilinuxdev@...il.com>
To: 
Cc: Lukas Wunner <lukas@...ner.de>,
	Atharva Tiwari <atharvatiwarilinuxdev@...il.com>,
	Ard Biesheuvel <ardb@...nel.org>,
	Hans de Goede <hansg@...nel.org>,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	linux-kernel@...r.kernel.org,
	linux-efi@...r.kernel.org,
	platform-driver-x86@...r.kernel.org
Subject: [PATCH 2/2] platform/apple-gmux: use apple_brightness to save brightness to EFI

use apple_brightness to save brightness to EFI.

(tested on iMac20,1)

Signed-off-by: Atharva Tiwari <atharvatiwarilinuxdev@...il.com>
---
 drivers/platform/x86/apple-gmux.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/platform/x86/apple-gmux.c b/drivers/platform/x86/apple-gmux.c
index 1417e230edbd..cfb20c115eb0 100644
--- a/drivers/platform/x86/apple-gmux.c
+++ b/drivers/platform/x86/apple-gmux.c
@@ -22,6 +22,7 @@
 #include <linux/pci.h>
 #include <linux/vga_switcheroo.h>
 #include <linux/debugfs.h>
+#include <linux/platform_data/apple-brightness.h>
 #include <acpi/video.h>
 #include <asm/io.h>
 
@@ -960,6 +961,12 @@ static int gmux_probe(struct pnp_dev *pnp, const struct pnp_device_id *id)
 	}
 
 	gmux_init_debugfs(gmux_data);
+	if (IS_ENABLED(CONFIG_APPLE_BRIGHTNESS)) {
+		ret = apple_brightness_probe(gmux_data->bdev, &gmux_get_brightness);
+		if (ret)
+			pr_warn("Unable to Enable EFI brightness saver: %d\n", ret);
+	}
+
 	return 0;
 
 err_register_handler:
-- 
2.43.0