127 lines
3.6 KiB
Diff
127 lines
3.6 KiB
Diff
From 5649180090a647fa91fff540f4b6a87b70a66449 Mon Sep 17 00:00:00 2001
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From: Andrey Smirnov <andrew.smirnov@gmail.com>
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Date: Sun, 27 Feb 2022 12:58:05 -0800
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Subject: [PATCH 06/21] leds: steamdeck: Add support for Steam Deck LED
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(cherry picked from commit 85a86d19aa7022ff0555023d53aef78323a42d0c)
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Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
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---
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drivers/leds/Kconfig | 7 ++++
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drivers/leds/Makefile | 1 +
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drivers/leds/leds-steamdeck.c | 74 +++++++++++++++++++++++++++++++++++
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3 files changed, 82 insertions(+)
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create mode 100644 drivers/leds/leds-steamdeck.c
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diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
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index 05e6af88b88c..f1967a88ebeb 100644
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--- a/drivers/leds/Kconfig
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+++ b/drivers/leds/Kconfig
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@@ -927,6 +927,13 @@ config LEDS_ACER_A500
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This option enables support for the Power Button LED of
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Acer Iconia Tab A500.
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+config LEDS_STEAMDECK
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+ tristate "LED support for Steam Deck"
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+ depends on LEDS_CLASS && MFD_STEAMDECK
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+ help
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+ This option enabled support for the status LED (next to the
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+ power button) on Steam Deck
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+
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source "drivers/leds/blink/Kconfig"
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comment "Flash and Torch LED drivers"
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diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
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index effdfc6f1e95..f2929021afeb 100644
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--- a/drivers/leds/Makefile
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+++ b/drivers/leds/Makefile
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@@ -79,6 +79,7 @@ obj-$(CONFIG_LEDS_POWERNV) += leds-powernv.o
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obj-$(CONFIG_LEDS_PWM) += leds-pwm.o
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obj-$(CONFIG_LEDS_REGULATOR) += leds-regulator.o
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obj-$(CONFIG_LEDS_SC27XX_BLTC) += leds-sc27xx-bltc.o
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+obj-$(CONFIG_LEDS_STEAMDECK) += leds-steamdeck.o
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obj-$(CONFIG_LEDS_SUN50I_A100) += leds-sun50i-a100.o
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obj-$(CONFIG_LEDS_SUNFIRE) += leds-sunfire.o
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obj-$(CONFIG_LEDS_SYSCON) += leds-syscon.o
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diff --git a/drivers/leds/leds-steamdeck.c b/drivers/leds/leds-steamdeck.c
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new file mode 100644
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index 000000000000..686500b8de73
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--- /dev/null
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+++ b/drivers/leds/leds-steamdeck.c
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@@ -0,0 +1,74 @@
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+// SPDX-License-Identifier: GPL-2.0+
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+
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+/*
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+ * Steam Deck EC MFD LED cell driver
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+ *
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+ * Copyright (C) 2021-2022 Valve Corporation
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+ *
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+ */
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+
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+#include <linux/acpi.h>
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+#include <linux/leds.h>
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+#include <linux/platform_device.h>
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+
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+struct steamdeck_led {
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+ struct acpi_device *adev;
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+ struct led_classdev cdev;
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+};
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+
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+static int steamdeck_leds_brightness_set(struct led_classdev *cdev,
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+ enum led_brightness value)
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+{
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+ struct steamdeck_led *sd = container_of(cdev, struct steamdeck_led,
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+ cdev);
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+
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+ if (ACPI_FAILURE(acpi_execute_simple_method(sd->adev->handle,
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+ "CHBV", value)))
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+ return -EIO;
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+
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+ return 0;
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+}
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+
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+static int steamdeck_leds_probe(struct platform_device *pdev)
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+{
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+ struct device *dev = &pdev->dev;
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+ struct steamdeck_led *sd;
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+ int ret;
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+
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+ sd = devm_kzalloc(dev, sizeof(*sd), GFP_KERNEL);
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+ if (!sd)
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+ return -ENOMEM;
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+
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+ sd->adev = ACPI_COMPANION(dev->parent);
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+
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+ sd->cdev.name = "status:white";
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+ sd->cdev.brightness_set_blocking = steamdeck_leds_brightness_set;
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+ sd->cdev.max_brightness = 100;
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+
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+ ret = devm_led_classdev_register(dev, &sd->cdev);
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+ if (ret) {
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+ dev_err(dev, "Failed to register LEDs device: %d\n", ret);
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+ return ret;
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+ }
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+
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+ return 0;
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+}
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+
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+static const struct platform_device_id steamdeck_leds_id_table[] = {
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+ { .name = "steamdeck-leds" },
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+ {}
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+};
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+MODULE_DEVICE_TABLE(platform, steamdeck_leds_id_table);
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+
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+static struct platform_driver steamdeck_leds_driver = {
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+ .probe = steamdeck_leds_probe,
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+ .driver = {
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+ .name = "steamdeck-leds",
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+ },
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+ .id_table = steamdeck_leds_id_table,
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+};
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+module_platform_driver(steamdeck_leds_driver);
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+
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+MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>");
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+MODULE_DESCRIPTION("Steam Deck LEDs driver");
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+MODULE_LICENSE("GPL");
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--
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2.44.0
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