X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=MAINTAINERS;h=3d7782b9f90d80d171c97e1d15371a9e2ec51ddc;hb=8892475386e819aa50856947948c546ccc964d96;hp=836a6183c37f6f6e2ceec36ea72497136fffde4c;hpb=241a9871263f3114717c0ed416a1bd1d2415d1fb;p=pandora-kernel.git diff --git a/MAINTAINERS b/MAINTAINERS index 836a6183c37f..3d7782b9f90d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -90,6 +90,9 @@ Descriptions of section entries: F: drivers/net/* all files in drivers/net, but not below F: */net/* all files in "any top level directory"/net One pattern per line. Multiple F: lines acceptable. + N: Files and directories with regex patterns. + N: [^a-z]tegra all files whose path contains the word tegra + One pattern per line. Multiple N: lines acceptable. X: Files and directories that are NOT maintained, same rules as F: Files exclusions are tested before file matches. Can be useful for excluding a specific subdirectory, for instance: @@ -97,13 +100,12 @@ Descriptions of section entries: X: net/ipv6/ matches all files in and below net excluding net/ipv6/ K: Keyword perl extended regex pattern to match content in a - patch or file, or an affected filename. For instance: + patch or file. For instance: K: of_get_profile - matches patch or file content, or filenames, that contain - "of_get_profile" + matches patches or files that contain "of_get_profile" K: \b(printk|pr_(info|err))\b - matches patch or file content, or filenames, that contain one or - more of the words printk, pr_info or pr_err + matches patches or files that contain one or more of the words + printk, pr_info or pr_err One regex pattern per line. Multiple K: lines acceptable. Note: For the hard of thinking, this list is meant to remain in alphabetical @@ -799,6 +801,7 @@ S: Maintained F: arch/arm/mach-prima2/ F: drivers/dma/sirf-dma.c F: drivers/i2c/busses/i2c-sirf.c +F: drivers/mmc/host/sdhci-sirf.c F: drivers/pinctrl/pinctrl-sirf.c F: drivers/spi/spi-sirf.c @@ -1031,6 +1034,7 @@ F: drivers/mmc/host/msm_sdcc.h F: drivers/tty/serial/msm_serial.h F: drivers/tty/serial/msm_serial.c F: drivers/*/pm8???-* +F: drivers/ssbi/ F: include/linux/mfd/pm8xxx/ T: git git://git.kernel.org/pub/scm/linux/kernel/git/davidb/linux-msm.git S: Maintained @@ -1616,6 +1620,13 @@ W: http://www.baycom.org/~tom/ham/ham.html S: Maintained F: drivers/net/hamradio/baycom* +BCACHE (BLOCK LAYER CACHE) +M: Kent Overstreet +L: linux-bcache@vger.kernel.org +W: http://bcache.evilpiepirate.org +S: Maintained: +F: drivers/md/bcache/ + BEFS FILE SYSTEM S: Orphan F: Documentation/filesystems/befs.txt @@ -1764,7 +1775,7 @@ F: arch/arm/configs/bcm2835_defconfig F: drivers/*/*bcm2835* BROADCOM TG3 GIGABIT ETHERNET DRIVER -M: Matt Carlson +M: Nithin Nayak Sujir M: Michael Chan L: netdev@vger.kernel.org S: Supported @@ -1886,7 +1897,7 @@ F: Documentation/video4linux/cafe_ccic F: drivers/media/platform/marvell-ccic/ CAIF NETWORK LAYER -M: Sjur Braendeland +M: Dmitry Tarnyagin L: netdev@vger.kernel.org S: Supported F: Documentation/networking/caif/ @@ -2200,12 +2211,34 @@ F: drivers/net/ethernet/ti/cpmac.c CPU FREQUENCY DRIVERS M: Rafael J. Wysocki +M: Viresh Kumar L: cpufreq@vger.kernel.org L: linux-pm@vger.kernel.org S: Maintained +T: git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git F: drivers/cpufreq/ F: include/linux/cpufreq.h +CPU FREQUENCY DRIVERS - ARM BIG LITTLE +M: Viresh Kumar +M: Sudeep KarkadaNagesha +L: cpufreq@vger.kernel.org +L: linux-pm@vger.kernel.org +W: http://www.arm.com/products/processors/technologies/biglittleprocessing.php +S: Maintained +F: drivers/cpufreq/arm_big_little.h +F: drivers/cpufreq/arm_big_little.c +F: drivers/cpufreq/arm_big_little_dt.c + +CPUIDLE DRIVERS +M: Rafael J. Wysocki +M: Daniel Lezcano +L: linux-pm@vger.kernel.org +S: Maintained +T: git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git +F: drivers/cpuidle/* +F: include/linux/cpuidle.h + CPUID/MSR DRIVER M: "H. Peter Anvin" S: Maintained @@ -2284,7 +2317,7 @@ L: linux-media@vger.kernel.org T: git git://linuxtv.org/media_tree.git W: http://linuxtv.org S: Maintained -F: drivers/media/i2c/cx2341x* +F: drivers/media/common/cx2341x* F: include/media/cx2341x* CX88 VIDEO4LINUX DRIVER @@ -2367,6 +2400,16 @@ W: http://www.cyclades.com/ S: Orphan F: drivers/net/wan/pc300* +CYPRESS_FIRMWARE MEDIA DRIVER +M: Antti Palosaari +L: linux-media@vger.kernel.org +W: http://linuxtv.org/ +W: http://palosaari.fi/linux/ +Q: http://patchwork.linuxtv.org/project/linux-media/list/ +T: git git://linuxtv.org/anttip/media_tree.git +S: Maintained +F: drivers/media/common/cypress_firmware* + CYTTSP TOUCHSCREEN DRIVER M: Javier Martinez Canillas L: linux-input@vger.kernel.org @@ -2441,9 +2484,7 @@ S: Maintained F: drivers/platform/x86/dell-laptop.c DELL LAPTOP SMM DRIVER -M: Massimo Dal Zotto -W: http://www.debian.org/~dz/i8k/ -S: Maintained +S: Orphan F: drivers/char/i8k.c F: include/uapi/linux/i8k.h @@ -2458,6 +2499,12 @@ M: Matthew Garrett S: Maintained F: drivers/platform/x86/dell-wmi.c +DESIGNWARE USB2 DRD IP DRIVER +M: Paul Zimmerman +L: linux-usb@vger.kernel.org +S: Maintained +F: drivers/staging/dwc2/ + DESIGNWARE USB3 DRD IP DRIVER M: Felipe Balbi L: linux-usb@vger.kernel.org @@ -2731,7 +2778,7 @@ T: git git://linuxtv.org/media_tree.git S: Maintained F: drivers/media/usb/dvb-usb/cxusb* -DVB_USB_CYPRESS_FIRMWARE MEDIA DRIVER +DVB_USB_EC168 MEDIA DRIVER M: Antti Palosaari L: linux-media@vger.kernel.org W: http://linuxtv.org/ @@ -2739,17 +2786,16 @@ W: http://palosaari.fi/linux/ Q: http://patchwork.linuxtv.org/project/linux-media/list/ T: git git://linuxtv.org/anttip/media_tree.git S: Maintained -F: drivers/media/usb/dvb-usb-v2/cypress_firmware* +F: drivers/media/usb/dvb-usb-v2/ec168* -DVB_USB_EC168 MEDIA DRIVER +DVB_USB_GL861 MEDIA DRIVER M: Antti Palosaari L: linux-media@vger.kernel.org W: http://linuxtv.org/ -W: http://palosaari.fi/linux/ Q: http://patchwork.linuxtv.org/project/linux-media/list/ T: git git://linuxtv.org/anttip/media_tree.git S: Maintained -F: drivers/media/usb/dvb-usb-v2/ec168* +F: drivers/media/usb/dvb-usb-v2/gl861* DVB_USB_MXL111SF MEDIA DRIVER M: Michael Krufky @@ -2987,9 +3033,18 @@ F: arch/ia64/kernel/efi.c F: arch/x86/boot/compressed/eboot.[ch] F: arch/x86/include/asm/efi.h F: arch/x86/platform/efi/* -F: drivers/firmware/efivars.c +F: drivers/firmware/efi/* F: include/linux/efi*.h +EFI VARIABLE FILESYSTEM +M: Matthew Garrett +M: Jeremy Kerr +M: Matt Fleming +T: git git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi.git +L: linux-efi@vger.kernel.org +S: Maintained +F: fs/efivarfs/ + EFIFB FRAMEBUFFER DRIVER L: linux-fbdev@vger.kernel.org M: Peter Jones @@ -3508,7 +3563,7 @@ F: drivers/isdn/gigaset/ F: include/uapi/linux/gigaset_dev.h GPIO SUBSYSTEM -M: Grant Likely +M: Grant Likely M: Linus Walleij S: Maintained T: git git://git.secretlab.ca/git/linux-2.6.git @@ -3593,6 +3648,14 @@ W: http://www.kernel.org/pub/linux/kernel/people/fseidel/hdaps/ S: Maintained F: drivers/platform/x86/hdaps.c +HDPVR USB VIDEO ENCODER DRIVER +M: Hans Verkuil +L: linux-media@vger.kernel.org +T: git git://linuxtv.org/media_tree.git +W: http://linuxtv.org +S: Odd Fixes +F: drivers/media/usb/hdpvr + HWPOISON MEMORY FAILURE HANDLING M: Andi Kleen L: linux-mm@kvack.org @@ -3864,7 +3927,6 @@ F: drivers/i2c/i2c-stub.c I2C SUBSYSTEM M: Wolfram Sang -M: "Ben Dooks (embedded platforms)" L: linux-i2c@vger.kernel.org W: http://i2c.wiki.kernel.org/ T: git git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git @@ -4341,7 +4403,7 @@ F: drivers/irqchip/ IRQ DOMAINS (IRQ NUMBER MAPPING LIBRARY) M: Benjamin Herrenschmidt -M: Grant Likely +M: Grant Likely T: git git://git.secretlab.ca/git/linux-2.6.git irqdomain/next S: Maintained F: Documentation/IRQ-domain.txt @@ -4422,6 +4484,16 @@ Q: http://patchwork.linuxtv.org/project/linux-media/list/ S: Maintained F: drivers/media/dvb-frontends/it913x-fe* +IT913X MEDIA DRIVER +M: Antti Palosaari +L: linux-media@vger.kernel.org +W: http://linuxtv.org/ +W: http://palosaari.fi/linux/ +Q: http://patchwork.linuxtv.org/project/linux-media/list/ +T: git git://linuxtv.org/anttip/media_tree.git +S: Maintained +F: drivers/media/tuners/it913x* + IVTV VIDEO4LINUX DRIVER M: Andy Walls L: ivtv-devel@ivtvdriver.org (moderated for non-subscribers) @@ -4828,11 +4900,8 @@ F: arch/powerpc/platforms/40x/ F: arch/powerpc/platforms/44x/ LINUX FOR POWERPC EMBEDDED XILINX VIRTEX -M: Grant Likely -W: http://wiki.secretlab.ca/index.php/Linux_on_Xilinx_Virtex L: linuxppc-dev@lists.ozlabs.org -T: git git://git.secretlab.ca/git/linux-2.6.git -S: Maintained +S: Unmaintained F: arch/powerpc/*/*virtex* F: arch/powerpc/*/*/*virtex* @@ -4941,6 +5010,12 @@ W: logfs.org S: Maintained F: fs/logfs/ +LPC32XX MACHINE SUPPORT +M: Roland Stigge +L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) +S: Maintained +F: arch/arm/mach-lpc32xx/ + LSILOGIC MPT FUSION DRIVERS (FC/SAS/SPI) M: Nagalakshmi Nandigama M: Sreekanth Reddy @@ -5406,6 +5481,13 @@ L: linux-scsi@vger.kernel.org S: Maintained F: drivers/scsi/NCR_D700.* +NCT6775 HARDWARE MONITOR DRIVER +M: Guenter Roeck +L: lm-sensors@lm-sensors.org +S: Maintained +F: Documentation/hwmon/nct6775 +F: drivers/hwmon/nct6775.c + NETEFFECT IWARP RNIC DRIVER (IW_NES) M: Faisal Latif L: linux-rdma@vger.kernel.org @@ -5837,7 +5919,7 @@ F: Documentation/i2c/busses/i2c-ocores F: drivers/i2c/busses/i2c-ocores.c OPEN FIRMWARE AND FLATTENED DEVICE TREE -M: Grant Likely +M: Grant Likely M: Rob Herring L: devicetree-discuss@lists.ozlabs.org (moderated for non-subscribers) W: http://fdt.secretlab.ca @@ -6192,7 +6274,7 @@ S: Supported F: drivers/scsi/pmcraid.* PMC SIERRA PM8001 DRIVER -M: jack_wang@usish.com +M: xjtuwjp@gmail.com M: lindar_liu@usish.com L: linux-scsi@vger.kernel.org S: Supported @@ -6325,11 +6407,12 @@ S: Maintained T: git git://git.infradead.org/users/cbou/linux-pstore.git F: fs/pstore/ F: include/linux/pstore* -F: drivers/firmware/efivars.c +F: drivers/firmware/efi/efi-pstore.c F: drivers/acpi/apei/erst.c PTP HARDWARE CLOCK SUPPORT M: Richard Cochran +L: netdev@vger.kernel.org S: Maintained W: http://linuxptp.sourceforge.net/ F: Documentation/ABI/testing/sysfs-ptp @@ -6461,6 +6544,7 @@ S: Supported F: drivers/net/ethernet/qlogic/qlcnic/ QLOGIC QLGE 10Gb ETHERNET DRIVER +M: Shahed Shaikh M: Jitendra Kalsaria M: Ron Mercer M: linux-driver@qlogic.com @@ -6625,7 +6709,7 @@ S: Supported F: fs/reiserfs/ REGISTER MAP ABSTRACTION -M: Mark Brown +M: Mark Brown T: git git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap.git S: Supported F: drivers/base/regmap/ @@ -6639,6 +6723,14 @@ F: drivers/remoteproc/ F: Documentation/remoteproc.txt F: include/linux/remoteproc.h +REMOTE PROCESSOR MESSAGING (RPMSG) SUBSYSTEM +M: Ohad Ben-Cohen +T: git git://git.kernel.org/pub/scm/linux/kernel/git/ohad/rpmsg.git +S: Maintained +F: drivers/rpmsg/ +F: Documentation/rpmsg.txt +F: include/linux/rpmsg.h + RFKILL M: Johannes Berg L: linux-wireless@vger.kernel.org @@ -6686,6 +6778,16 @@ T: git git://linuxtv.org/anttip/media_tree.git S: Maintained F: drivers/media/dvb-frontends/rtl2830* +RTL2832 MEDIA DRIVER +M: Antti Palosaari +L: linux-media@vger.kernel.org +W: http://linuxtv.org/ +W: http://palosaari.fi/linux/ +Q: http://patchwork.linuxtv.org/project/linux-media/list/ +T: git git://linuxtv.org/anttip/media_tree.git +S: Maintained +F: drivers/media/dvb-frontends/rtl2832* + RTL8180 WIRELESS DRIVER M: "John W. Linville" L: linux-wireless@vger.kernel.org @@ -6788,7 +6890,7 @@ L: linux-media@vger.kernel.org W: http://linuxtv.org T: git git://linuxtv.org/media_tree.git S: Odd fixes -F: Documentation/video4linux/saa7134/ +F: Documentation/video4linux/*.saa7134 F: drivers/media/pci/saa7134/ SAA7146 VIDEO4LINUX-2 DRIVER @@ -6881,9 +6983,8 @@ F: drivers/clocksource TLG2300 VIDEO4LINUX-2 DRIVER M: Huang Shijie -M: Kang Yong -M: Zhang Xiaobing -S: Supported +M: Hans Verkuil +S: Odd Fixes F: drivers/media/usb/tlg2300 SC1200 WDT DRIVER @@ -6951,7 +7052,6 @@ F: drivers/scsi/st* SCTP PROTOCOL M: Vlad Yasevich -M: Sridhar Samudrala M: Neil Horman L: linux-sctp@vger.kernel.org W: http://lksctp.sourceforge.net @@ -7055,9 +7155,9 @@ F: drivers/misc/phantom.c F: include/uapi/linux/phantom.h SERIAL ATA (SATA) SUBSYSTEM -M: Jeff Garzik +M: Tejun Heo L: linux-ide@vger.kernel.org -T: git git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev.git +T: git git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata.git S: Supported F: drivers/ata/ F: include/linux/ata.h @@ -7130,17 +7230,43 @@ F: drivers/media/radio/si470x/radio-si470x-common.c F: drivers/media/radio/si470x/radio-si470x.h F: drivers/media/radio/si470x/radio-si470x-usb.c +SI4713 FM RADIO TRANSMITTER I2C DRIVER +M: Eduardo Valentin +L: linux-media@vger.kernel.org +T: git git://linuxtv.org/media_tree.git +W: http://linuxtv.org +S: Odd Fixes +F: drivers/media/radio/si4713-i2c.? + +SI4713 FM RADIO TRANSMITTER PLATFORM DRIVER +M: Eduardo Valentin +L: linux-media@vger.kernel.org +T: git git://linuxtv.org/media_tree.git +W: http://linuxtv.org +S: Odd Fixes +F: drivers/media/radio/radio-si4713.h + +SIANO DVB DRIVER +M: Mauro Carvalho Chehab +L: linux-media@vger.kernel.org +W: http://linuxtv.org +T: git git://linuxtv.org/media_tree.git +S: Odd fixes +F: drivers/media/common/siano/ +F: drivers/media/dvb/siano/ +F: drivers/media/usb/siano/ +F: drivers/media/mmc/siano + SH_VEU V4L2 MEM2MEM DRIVER M: Guennadi Liakhovetski L: linux-media@vger.kernel.org S: Maintained F: drivers/media/platform/sh_veu.c -F: include/media/sh_veu.h SH_VOU V4L2 OUTPUT DRIVER M: Guennadi Liakhovetski L: linux-media@vger.kernel.org -S: Maintained +S: Odd Fixes F: drivers/media/platform/sh_vou.c F: include/media/sh_vou.h @@ -7182,14 +7308,13 @@ F: arch/arm/mach-davinci F: drivers/i2c/busses/i2c-davinci.c TI DAVINCI SERIES MEDIA DRIVER -M: Manjunath Hadli -M: Prabhakar Lad +M: Lad, Prabhakar L: linux-media@vger.kernel.org L: davinci-linux-open-source@linux.davincidsp.com (moderated for non-subscribers) W: http://linuxtv.org/ Q: http://patchwork.linuxtv.org/project/linux-media/list/ T: git git://linuxtv.org/mhadli/v4l-dvb-davinci_devices.git -S: Supported +S: Maintained F: drivers/media/platform/davinci/ F: include/media/davinci/ @@ -7374,7 +7499,7 @@ F: sound/ SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEMENT (ASoC) M: Liam Girdwood -M: Mark Brown +M: Mark Brown T: git git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git L: alsa-devel@alsa-project.org (moderated for non-subscribers) W: http://alsa-project.org/main/index.php/ASoC @@ -7462,11 +7587,11 @@ S: Maintained F: drivers/clk/spear/ SPI SUBSYSTEM -M: Grant Likely -M: Mark Brown +M: Mark Brown +M: Grant Likely L: spi-devel-general@lists.sourceforge.net +T: git git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git Q: http://patchwork.kernel.org/project/spi-devel-general/list/ -T: git git://git.secretlab.ca/git/linux-2.6.git S: Maintained F: Documentation/spi/ F: drivers/spi/ @@ -7561,6 +7686,11 @@ M: David Täht S: Odd Fixes F: drivers/staging/frontier/ +STAGING - GO7007 MPEG CODEC +M: Hans Verkuil +S: Maintained +F: drivers/staging/media/go7007/ + STAGING - INDUSTRIAL IO M: Jonathan Cameron L: linux-iio@vger.kernel.org @@ -7611,8 +7741,8 @@ S: Odd Fixes F: drivers/staging/sm7xxfb/ STAGING - SOFTLOGIC 6x10 MPEG CODEC -M: Ben Collins -S: Odd Fixes +M: Ismael Luceno +S: Supported F: drivers/staging/media/solo6x10/ STAGING - SPEAKUP CONSOLE SPEECH DRIVER @@ -7877,7 +8007,7 @@ L: linux-tegra@vger.kernel.org Q: http://patchwork.ozlabs.org/project/linux-tegra/list/ T: git git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra.git S: Supported -K: (?i)[^a-z]tegra +N: [^a-z]tegra TEHUTI ETHERNET DRIVER M: Andy Gospodarek @@ -7899,11 +8029,14 @@ F: arch/xtensa/ THERMAL M: Zhang Rui +M: Eduardo Valentin L: linux-pm@vger.kernel.org T: git git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux.git +Q: https://patchwork.kernel.org/project/linux-pm/list/ S: Supported F: drivers/thermal/ F: include/linux/thermal.h +F: include/linux/cpu_cooling.h THINGM BLINK(1) USB RGB LED DRIVER M: Vivien Didelot @@ -7920,6 +8053,12 @@ T: git git://repo.or.cz/linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git S: Maintained F: drivers/platform/x86/thinkpad_acpi.c +TI BANDGAP AND THERMAL DRIVER +M: Eduardo Valentin +L: linux-pm@vger.kernel.org +S: Maintained +F: drivers/staging/omap-thermal/ + TI FLASH MEDIA INTERFACE DRIVER M: Alex Dubov S: Maintained @@ -8357,9 +8496,10 @@ S: Maintained F: drivers/usb/serial/option.c USB PEGASUS DRIVER -M: Petko Manolov +M: Petko Manolov L: linux-usb@vger.kernel.org L: netdev@vger.kernel.org +T: git git://git.code.sf.net/p/pegasus2/git W: http://pegasus2.sourceforge.net/ S: Maintained F: drivers/net/usb/pegasus.* @@ -8379,9 +8519,10 @@ S: Supported F: drivers/usb/class/usblp.c USB RTL8150 DRIVER -M: Petko Manolov +M: Petko Manolov L: linux-usb@vger.kernel.org L: netdev@vger.kernel.org +T: git git://git.code.sf.net/p/pegasus2/git W: http://pegasus2.sourceforge.net/ S: Maintained F: drivers/net/usb/rtl8150.c @@ -8515,7 +8656,7 @@ F: drivers/usb/gadget/*uvc*.c F: drivers/usb/gadget/webcam.c USB WIRELESS RNDIS DRIVER (rndis_wlan) -M: Jussi Kivilinna +M: Jussi Kivilinna L: linux-wireless@vger.kernel.org S: Maintained F: drivers/net/wireless/rndis_wlan.c @@ -8620,6 +8761,7 @@ F: drivers/virtio/ F: drivers/net/virtio_net.c F: drivers/block/virtio_blk.c F: include/linux/virtio_*.h +F: include/uapi/linux/virtio_*.h VIRTIO HOST (VHOST) M: "Michael S. Tsirkin" @@ -8707,8 +8849,8 @@ F: drivers/scsi/vmw_pvscsi.c F: drivers/scsi/vmw_pvscsi.h VOLTAGE AND CURRENT REGULATOR FRAMEWORK -M: Liam Girdwood -M: Mark Brown +M: Liam Girdwood +M: Mark Brown W: http://opensource.wolfsonmicro.com/node/15 W: http://www.slimlogic.co.uk/?p=48 T: git git://git.kernel.org/pub/scm/linux/kernel/git/lrg/regulator.git @@ -8971,9 +9113,7 @@ S: Maintained F: drivers/net/ethernet/xilinx/xilinx_axienet* XILINX SYSTEMACE DRIVER -M: Grant Likely -W: http://www.secretlab.ca/ -S: Maintained +S: Unmaintained F: drivers/block/xsysace.c XILINX UARTLITE SERIAL DRIVER