Hi Raul, On 06/14/2016 05:22 AM, Raul Piper wrote:
Hi, I am developing a Linux kernel driver(software) for a 16 channel LED driver(this driverhere refers to the hardware of LED ) .Below are few of its characteristics DC input voltage range : 10 V to 28 V Integrated boost converter with adaptive output voltage 16 channels and independent PWM brightness control Up to 15 white LEDs per channel On-board microcontroller for total device control through 4-wire serial interface LED short-circuit faults management I have done some brute force work by creating a user space application to do some portion of the LED glowing, I know its not a full fledged work. I want to know on the below points : 1. How can I convert it into a GPIO driver and the standard ramework with which I can integrate it.
Please get acquainted with the LED subsystem documentation: Documentation/leds/leds-class.txt. You should also refer to the existing LED class drivers in drivers/leds to find out how LED class devices are being registered.
2.The architecture of the user space application to test this driver
LED class devices expose sysfs interface at /sys/class/leds, i.e. the LEDs can be controlled from bash.
3.The requirement for the Device Tree configuration for this.
Please refer to Documentation/devicetree/bindings/leds/common.txt and driver bindings in Documentation/devicetree/bindings/leds.
4.The name of the LED class driver maintainer in the kernel linux, to whom I have to send the patch?
./scripts/get_maintainer.pl -f drivers/leds/ will give you the answer.
5.Any other mandatory requirement to which I have to adhere to for pushing the device driver to the main line.
Please read the following documents: - Documentation/SubmittingPatches - Documentation/SubmittingDrivers - Documentation/SubmitChecklist -- Best regards, Jacek Anaszewski -- To unsubscribe from this list: send the line "unsubscribe linux-leds" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
