linux-kernel - [PATCH] platform: x86: pcengines-apu2: wire up simswitch gpio as led

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Date:   Mon, 29 Jul 2019 16:39:26 +0200
From:   "Enrico Weigelt, metux IT consult" <info@...ux.net>
To:     linux-kernel@...r.kernel.org
Cc:     info@...ux.net, dvhart@...radead.org, andy@...radead.org,
        platform-driver-x86@...r.kernel.org
Subject: [PATCH] platform: x86: pcengines-apu2: wire up simswitch gpio as led

From: Enrico Weigelt <info@...ux.net>

The APU3+ boards have two SIM sockets, while only one of them
can be routed to the mpcie slots at a time. Selection is done
via simswap gpio.

We currently don't have a fitting subsystem for those cases yet,
so just wire it up to a LED for the time being. While this isn't
really semantically correct, it's a good compromise.

Signed-off-by: Enrico Weigelt <info@...ux.net>
---
 drivers/platform/x86/pcengines-apuv2.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/pcengines-apuv2.c b/drivers/platform/x86/pcengines-apuv2.c
index b0d3110..adecd6a 100644
--- a/drivers/platform/x86/pcengines-apuv2.c
+++ b/drivers/platform/x86/pcengines-apuv2.c
@@ -69,7 +69,8 @@
 static const struct gpio_led apu2_leds[] = {
 	{ .name = "apu:green:1" },
 	{ .name = "apu:green:2" },
-	{ .name = "apu:green:3" }
+	{ .name = "apu:green:3" },
+	{ .name = "apu:simswap" },
 };
 
 static const struct gpio_led_platform_data apu2_leds_pdata = {
@@ -86,6 +87,8 @@
 				NULL, 1, GPIO_ACTIVE_LOW),
 		GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_LED3,
 				NULL, 2, GPIO_ACTIVE_LOW),
+		GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_REG_SIMSWAP,
+				NULL, 3, GPIO_ACTIVE_LOW),
 	}
 };
 
-- 
1.9.1