Linux USB Device Driver Developer

4 weeks ago

Hyderabad India TestCore IT Solutions Pvt. Ltd. Full time

Job Description Location: Hyderabad Exp : 4 years + Job Description: We are looking for an experienced Linux USB Device Driver Developer to join our embedded software team. The candidate will work on USB driver development and integration, covering device-side gadget frameworks and core Linux USB architecture. Key Responsibilities: - Understand the fundamentals of USB, including USB 1.1/2.0/3.x specifications, device descriptors (device, config, interface, endpoint), and transfer types (control, bulk, interrupt, isochronous, streams). - Handle USB power management, including bus/self-powered modes, suspend/resume, and Link Power Management (LPM). - Work with the Linux USB architecture encompassing USB core, enumeration, host controller drivers (EHCI, OHCI, XHCI, DWC3), gadget framework, and USB Device Controllers (UDC). - Develop and maintain USB class drivers such as HID, Mass Storage, CDC, Audio, and Video. - Develop device-side USB stacks using the Gadget API (usb_gadget, usb_ep), function drivers (g_ether, g_mass_storage, g_hid), and dynamic configurations using ConfigFS. - Manage USB endpoint handling, descriptors, and control requests. - Write USB device drivers including device tree handling (snps, dwc3), registering UDC drivers, and implementing callbacks (bind, unbind, setup). - Handle control requests and USB transfers using usb_ep_queue. - Collaborate with other teams to debug and optimize USB functionality. Mandatory Skills: - Strong proficiency in C programming. - Good understanding of USB specifications and Linux USB architecture. - Experience in writing and debugging Linux USB Device Drivers. - Familiarity with Device Tree and Linux kernel development. - Knowledge of embedded Linux development tools. Preferred Skills: - Experience with USB gadget framework and class drivers. - Exposure to kernel module programming and driver registration. - Knowledge of advanced power management features like LPM. - Experience with ConfigFS for USB device configuration. - Familiarity with debugging embedded USB hardware and software. Education: - Bachelor's/Master's degree in Electronics, Computer Science, or related field.

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