Photonicat has a network status LED that can be controlled by system.
The LED status can be set through command 0x19.
Signed-off-by: Junhao Xie <bigfoot@xxxxxxxxxxx>
---
drivers/leds/Kconfig | 11 +++++
drivers/leds/Makefile | 1 +
drivers/leds/leds-photonicat.c | 75 ++++++++++++++++++++++++++++++++++
3 files changed, 87 insertions(+)
create mode 100644 drivers/leds/leds-photonicat.c
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 8d9d8da376e4..539adb5944e6 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -381,6 +381,17 @@ config LEDS_PCA9532_GPIO
To use a pin as gpio pca9532_type in pca9532_platform data needs to
set to PCA9532_TYPE_GPIO.
+config LEDS_PHOTONICAT_PMU
+ tristate "LED Support for Photonicat PMU"
+ depends on LEDS_CLASS
+ depends on MFD_PHOTONICAT_PMU
+ help
+ Photonicat has a network status LED that can be controlled by system,
+ this option enables support for LEDs connected to the Photonicat PMU.
+
+ To compile this driver as a module, choose M here: the
+ module will be called leds-photonicat.
+
config LEDS_GPIO
tristate "LED Support for GPIO connected LEDs"
depends on LEDS_CLASS
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index 18afbb5a23ee..dcd5312aee12 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -76,6 +76,7 @@ obj-$(CONFIG_LEDS_PCA9532) += leds-pca9532.o
obj-$(CONFIG_LEDS_PCA955X) += leds-pca955x.o
obj-$(CONFIG_LEDS_PCA963X) += leds-pca963x.o
obj-$(CONFIG_LEDS_PCA995X) += leds-pca995x.o
+obj-$(CONFIG_LEDS_PHOTONICAT_PMU) += leds-photonicat.o
obj-$(CONFIG_LEDS_PM8058) += leds-pm8058.o
obj-$(CONFIG_LEDS_POWERNV) += leds-powernv.o
obj-$(CONFIG_LEDS_PWM) += leds-pwm.o
diff --git a/drivers/leds/leds-photonicat.c b/drivers/leds/leds-photonicat.c
new file mode 100644
index 000000000000..3aa5ce525b83
--- /dev/null
+++ b/drivers/leds/leds-photonicat.c
@@ -0,0 +1,75 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2024 Junhao Xie <bigfoot@xxxxxxxxxxx>
+ */
+
+#include <linux/mfd/photonicat-pmu.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+
+struct pcat_leds {
+ struct device *dev;
+ struct pcat_pmu *pmu;
+ struct led_classdev cdev;
+};
+
+static int pcat_led_status_set(struct led_classdev *cdev,
+ enum led_brightness brightness)
+{
+ struct pcat_leds *leds = container_of(cdev, struct pcat_leds, cdev);
+ struct pcat_data_cmd_led_setup setup = { 0, 0, 0 };
+
+ if (brightness)
+ setup.on_time = 100;
+ else
+ setup.down_time = 100;
+ return pcat_pmu_write_data(leds->pmu, PCAT_CMD_NET_STATUS_LED_SETUP,
+ &setup, sizeof(setup));
+}
+
+static int pcat_leds_probe(struct platform_device *pdev)
+{
+ int ret;
+ struct device *dev = &pdev->dev;
+ struct pcat_leds *leds;
+ const char *label;
+
+ leds = devm_kzalloc(dev, sizeof(*leds), GFP_KERNEL);
+ if (!leds)
+ return -ENOMEM;
+
+ leds->dev = dev;
+ leds->pmu = dev_get_drvdata(dev->parent);
+ platform_set_drvdata(pdev, leds);
+
+ ret = of_property_read_string(dev->of_node, "label", &label);
+ if (ret)
+ return dev_err_probe(dev, ret, "No label property\n");
+
+ leds->cdev.name = label;
+ leds->cdev.max_brightness = 1;
+ leds->cdev.brightness_set_blocking = pcat_led_status_set;
+
+ return devm_led_classdev_register(dev, &leds->cdev);
+}
+
+static const struct of_device_id pcat_leds_dt_ids[] = {
+ { .compatible = "ariaboard,photonicat-pmu-leds", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, pcat_leds_dt_ids);
+
+static struct platform_driver pcat_leds_driver = {
+ .driver = {
+ .name = "photonicat-leds",
+ .of_match_table = pcat_leds_dt_ids,
+ },
+ .probe = pcat_leds_probe,
+};
+module_platform_driver(pcat_leds_driver);
+
+MODULE_AUTHOR("Junhao Xie <bigfoot@xxxxxxxxxxx>");
+MODULE_DESCRIPTION("Photonicat PMU Status LEDs");
+MODULE_LICENSE("GPL");
--
2.46.0
