Merge tag 'leds-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds

Pull LED updates from Pavel Machek:
 "One new driver, some driver changes, and some late minute cleanups --
  but those are just whitespace so should be okay.

  There are some major changes being prepared (multicolor, triggers) so
  the next release likely will be more interesting"

* tag 'leds-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds:
  leds: core: Fix warning message when init_data
  leds: make functions easier to understand
  leds: sort Makefile entries
  leds: old enums are not really applicable to new code
  leds: ip30: label power LED as such
  leds: lm3532: make bitfield 'enabled' unsigned
  leds: leds-pwm: Replace zero-length array with flexible-array member
  leds: leds-is31fl32xx: Replace zero-length array with flexible-array member
  leds: pwm: remove useless pwm_period_ns
  leds: pwm: remove header
  leds: pwm: convert to atomic PWM API
  leds: pwm: simplify if condition
  leds: add SGI IP30 led support
  leds: lm3697: fix spelling mistake "To" -> "Too"
  leds: leds-bd2802: remove set but not used variable 'pdata'
  leds: ns2: Convert to GPIO descriptors
  leds: ns2: Absorb platform data

1 files changed, 86 insertions, 0 deletions

diff --git a/drivers/leds/leds-ip30.c b/drivers/leds/leds-ip30.c
new file mode 100644
index 000000000000..d4ec7361c616
--- /dev/null
+++ b/drivers/leds/leds-ip30.c
@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * LED Driver for SGI Octane machines
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+
+#define IP30_LED_SYSTEM	0
+#define IP30_LED_FAULT	1
+
+struct ip30_led {
+	struct led_classdev cdev;
+	u32 __iomem *reg;
+};
+
+static void ip30led_set(struct led_classdev *led_cdev,
+			enum led_brightness value)
+{
+	struct ip30_led *led = container_of(led_cdev, struct ip30_led, cdev);
+
+	writel(value, led->reg);
+}
+
+static int ip30led_create(struct platform_device *pdev, int num)
+{
+	struct resource *res;
+	struct ip30_led *data;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, num);
+	if (!res)
+		return -EBUSY;
+
+	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	data->reg = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(data->reg))
+		return PTR_ERR(data->reg);
+
+
+	switch (num) {
+	case IP30_LED_SYSTEM:
+		data->cdev.name = "white:power";
+		break;
+	case IP30_LED_FAULT:
+		data->cdev.name = "red:fault";
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	data->cdev.brightness = readl(data->reg);
+	data->cdev.max_brightness = 1;
+	data->cdev.brightness_set = ip30led_set;
+
+	return devm_led_classdev_register(&pdev->dev, &data->cdev);
+}
+
+static int ip30led_probe(struct platform_device *pdev)
+{
+	int ret;
+
+	ret = ip30led_create(pdev, IP30_LED_SYSTEM);
+	if (ret < 0)
+		return ret;
+
+	return ip30led_create(pdev, IP30_LED_FAULT);
+}
+
+static struct platform_driver ip30led_driver = {
+	.probe		= ip30led_probe,
+	.driver		= {
+		.name		= "ip30-leds",
+	},
+};
+
+module_platform_driver(ip30led_driver);
+
+MODULE_AUTHOR("Thomas Bogendoerfer <tbogendoerfer@suse.de>");
+MODULE_DESCRIPTION("SGI Octane LED driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:ip30-leds");