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Copy of [ForKernelWifi]sudharsan-resume-2016
- 1. Sudharsan Reddy Yettapu Email [email protected] B.E. Computer Tech. Mobile +918971188858 Home +919866551948 Key Positions 1. Sr Engineering Manager at Motorola Mobility, India 2010-2016 2. Technical Manager at Azingo, India 2007-2010 3. Sr Software Engineer at Nokia,India 2003 – 2007 4. Engineer SD at National Remote Sensing Agency, India 1995 – 2003 Strengths • Embedded Linux/BSD Kernel, Linux System Programming. • TCP/IP Protocols, IP Clustering, State Full Firewall, IP VPN. • Local connectivity : DLNA, AVAHI, USB , MTP, Linux USB Gadget Drivers. • Content Protection : OMA DRM, WIDEVINE, Motorola Secure Media. • Cryptography : Open SSL, NSS , Cryptography H/W acceleration. Mobile Platform Security , TI M Shield , Secure Boot. • Android OS , Frame Works WIFI, GPS, Sensor, Application. • Chip sets: OMAP4, QC 8960, QC 8960Pro, QC 8x10/8x12, QC 8084 Key Accomplishments: Motorola : Android M upgrade Motorola Droid Turbo (8084) • Lead the Linux Kernel/BSP bring up for the Droid Turbo (8084) SOC. Analyze, cherry pick, integrate the Kernel/BSP QC M build drop to support the M upgrade. • Ported the esdf file system implementing the Android folder permissions to linux kernel 3.10. • Ported the seccomp upstream kernel changes to linux kernel 3.10. Support the seccomp AOSP functionality and CTS testing. • Ported the upstream OOM synchrinization changes to Linux Kernel 3.10 to address the device stability issues on low memeory. Android L, M upgrades for Moto E 2nd Gen, Moto G LTE (8x10/8x12, 8x26) • Lead the Linux Kernel/BSP bring up for the B-family QC chipsets for the Android L/M upgrades. Implemented the device tree changes required for the SOC and the peripherals to boot up the device to Home screen.
- 2. • Lead the Linux Kernel/BSP code management, non HLOS component strategy. Analyze, cherry pick, integrate the QC Android L/M build drops. Analyze, cherry pick, integrate the upstream Linux/AOSP kernel changes to improve the kernel stability, provide the AOSP functionality. • Ported the name space kernel changes to support the Android M upgrade from upstream to linux 3.8 kernel. • Implemented the kernel/bootloader hardware ID SKU detection changes in the device tree for the Moto E 2nd Gen P2A/P2B, Moto G LTE EVT/DVT. • Implemented the FSA8500 headset detect kernel driver changes and integration with sensor hub driver. Kernel/Bootloader UTAG support for the battery ID is added and implemented. • Implemented the kernel/bootloader Rohm display backlight driver for the Moto E 2nd Gen SOC. • eMMC drive strength changes for the factory team benchmark the current drain and eMMC configuration. • Debugged the Styx 3G SOC kernel spinlock memory corruptions and resolved in collaboration with QC team to be faulty parts. • Debugged the OTA failures of customer Moto G LTE, Moto E 1nd Gen devices due to large block writing to the eMMC/SD (Toshiba parts) and implemented the workaround to address the OTA failures. Android KK upgrade for RAZR HD, ATRIX HD Lead the 5 Kernel and 3 WiFi team members for Android Kitkat (KK) Upgrade release on QualComm 8960 series based Mobile Platform - Droid RAZR M, Droid RAZR HD, ATRIX HD, Electrify M, Photon Q devices. Established the working relationship with the QC India team for resolving platform issues. Lead the Kernel team for 8960 device bring-up with KK release kernel , Defined the non HLOS integration approach, Integrated the memory mapping changes required for the Linux kernel. Migrated the LK Motorola legacy device tree to open firmware device tree. Carried out the QC 8960 SOC Linux BSP porting, supporting the open firmware device tree configuration. Motorola Universal Dock kernel driver is ported to the KK Linux 3.4.43 Ported Whisper identification daemon, Android HAL layer to support the audio routing.
- 3. Integration of Display/Graphics kernel, Android HAL layer components from QCOM provided KK vendor drop. Integration the QC TZ hardware key support from the QCOM provided KK vendor drop. Resolved the critical OOM issues during the encryption on boot up. Lead the WIFI team and defined the integration approach for the WIFI component. Integrated the QC provided optimized Riva drop. Carried out the full certification with external vendor. Lead the team, Defined the integration approach for sensors, ported the proximity sensor kernel driver. Integrated the QC provided sensor HAL layer . Achieved the current drain KPI targets and Stability criteria of 800 hour required for carriers. Root caused the APM high current drain issues and fixed the issues in coordination with QC. Established the extended kernel team by working with external vendors, mentored the team for delivering the 8960 KK upgrade release Android JB Upgrade for XYBoard • Lead the team delivered the ICS to JB upgrade for the XYBoard tablet platform based OMAP chipset . Established working relationship with external TI recommended vendor , Global Logic for porting, integrating the Linux kernel BSP, Display/Graphics, BT, WIFI drivers and firmware. Android JB Upgrade for Droid RAZR • Integrated the TI R4 WIFI, GPS, Sensor JB upgrade for the Droid RAZR, RAZR MAXX LTE/U OMAP4 family products. Established the working relationship with TI’s WIFI team to resolve customer reported issues. Android ICS Upgrade for ATRIX, PHOTON • Completed the product integration. Integrated the new Finger print sensor stack provided by AUTHENTIC. Developed the WideVine system integration library to support protected content. Motorola Secure Media • Ported the TI M-Shield for ICS release on XYBoard 10” tablet devices. Developed the secure media services in coordination with VISUALON to play the secure media content. Azingo : • Developed the mobile content protection solution. Coded, integrated the
- 4. OMA DRM 1/2 with the Vodafone Music portal. Supporting the AYCE & FTMD use cases. • Lead the team to develop mobile platform security to provide root of trust. • Developed cryptography acceleration Linux drivers for the OMAP 730/740 platform. • Ported the LiMO foundation unified Messaging Server daemon, certificate manager . • Developed Alarm Manager service for the Azingo Mobile platform . Nokia : • Implemented the source address anti-spoofing protocol RFC 2827 on Nokia IP VPN. • Implemented the VRRP protocol RFC 2338 on Nokia IP VPN. • Implemented the DHCP server, DHCP relay agent with clustering feature to support high availability on Nokia IP VPN • Implemented the software version of the AES XCBC MAC RFC 3566 on Nokia Check Point VPN gateway. • Ported the cavium 8 core crypto acceleration driver. Developed the AES XCBC MAC using the crypto acceleration on Nokia Check point VPN gateway. National Remote Sensing Agency • Developed the SCSI drivers to interface the Satellite Data Reception unit (FEH). • Developed real time satellite data acquisition, real time image processing, display system. (Sudharsan Reddy Yettapu)