Re: [PATCH v5 6/6] leds: Add a multicolor LED driver to group monochromatic LEDs

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Hi Jean,

On 10/28/22 19:03, Jean-Jacques Hiblot wrote:
By allowing to group multiple monochrome LED into multicolor LEDs,
all involved LEDs can be controlled in-sync. This enables using effects
using triggers, etc.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@xxxxxxxxxxxxxxx>
---
  drivers/leds/rgb/Kconfig                 |  10 ++
  drivers/leds/rgb/Makefile                |   1 +
  drivers/leds/rgb/leds-group-multicolor.c | 154 +++++++++++++++++++++++
  3 files changed, 165 insertions(+)
  create mode 100644 drivers/leds/rgb/leds-group-multicolor.c

diff --git a/drivers/leds/rgb/Kconfig b/drivers/leds/rgb/Kconfig
index 204cf470beae..1a87f53faa8a 100644
--- a/drivers/leds/rgb/Kconfig
+++ b/drivers/leds/rgb/Kconfig
@@ -2,6 +2,16 @@
[...]
+
+	for (i = 0; i < count; i++) {
+		struct led_classdev *led_cdev = priv->monochromatics[i];
+
+		/* Make the sysfs of the monochromatic LED read-only */
+		led_cdev->flags |= LED_SYSFS_DISABLE;

Clearing these on remove is needed as well.

+	}
+
+	return 0;
+}
+
+static const struct of_device_id of_led_mcg_match[] = {
+	{ .compatible = "leds-group-multicolor" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, of_led_mcg_match);
+
+static struct platform_driver led_mcg_driver = {
+	.probe		= led_mcg_probe,
+	.driver		= {
+		.name	= "leds_group_multicolor",
+		.of_match_table = of_led_mcg_match,
+	}
+};
+module_platform_driver(led_mcg_driver);
+
+MODULE_AUTHOR("Jean-Jacques Hiblot <jjhiblot@xxxxxxxxxxxxxxx>");
+MODULE_DESCRIPTION("multi-color LED group driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:leds-group-multicolor");

--
Best regards,
Jacek Anaszewski



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