linux-kernel - [PATCH v2] leds: apu: extend support for PC Engines APU1 with newer firmware

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Date:   Tue, 16 Feb 2021 14:30:28 +0100
From:   Andreas Eberlein <foodeas@...erlein.de>
To:     Pavel Machek <pavel@....cz>
Cc:     linux-leds@...r.kernel.org, linux-kernel@...r.kernel.org,
        Andreas Eberlein <foodeas@...erlein.de>
Subject: [PATCH v2] leds: apu: extend support for PC Engines APU1 with newer firmware

The DMI_PRODUCT_NAME entry on current firmware of PC Engines APU1 changed
from "APU" to "apu1"

This modification adds the missing DMI data and thereby the LED support for
the PC Engines APU1 with firmware versions >= 4.6.8.

Signed-off-by: Andreas Eberlein <foodeas@...erlein.de>
---
Changes in v2:
  - Add missing brace
---
 drivers/leds/leds-apu.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/leds/leds-apu.c b/drivers/leds/leds-apu.c
index 7fd557ace..c409b80c2 100644
--- a/drivers/leds/leds-apu.c
+++ b/drivers/leds/leds-apu.c
@@ -83,6 +83,7 @@ static const struct apu_led_profile apu1_led_profile[] = {
 };
 
 static const struct dmi_system_id apu_led_dmi_table[] __initconst = {
+	/* PC Engines APU with factory bios "SageBios_PCEngines_APU-45" */
 	{
 		.ident = "apu",
 		.matches = {
@@ -90,6 +91,14 @@ static const struct dmi_system_id apu_led_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_PRODUCT_NAME, "APU")
 		}
 	},
+	/* PC Engines APU with "Mainline" bios >= 4.6.8 */
+	{
+		.ident = "apu",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "apu1")
+		}
+	},
 	{}
 };
 MODULE_DEVICE_TABLE(dmi, apu_led_dmi_table);
@@ -173,7 +182,7 @@ static int __init apu_led_init(void)
 	int err;
 
 	if (!(dmi_match(DMI_SYS_VENDOR, "PC Engines") &&
-	      dmi_match(DMI_PRODUCT_NAME, "APU"))) {
+	      (dmi_match(DMI_PRODUCT_NAME, "APU") || dmi_match(DMI_PRODUCT_NAME, "apu1")))) {
 		pr_err("No PC Engines APUv1 board detected. For APUv2,3 support, enable CONFIG_PCENGINES_APU2\n");
 		return -ENODEV;
 	}
-- 
2.25.1