CE Linux Forum / Embedded Linux Conference 2007Technical Showcase

What is demonstrated How was the Linux improved

Patch Availability

Hardware Information

DirectFB on SH-MobileR(SH7722) Processor

The gfx_driver for SH7722 will be merged with www.directfb.org The SH7722 will be supported from the mainline kernel-2.6.22. KPIT ( http://www.kpitgnutools.com/bt/news.php ) has releasedsh-linux-gcc4.2.

Custom gfx_driver for SH7722 has direct access to H/Wand eliminates /dev/fb overhead like in generic gfx.

SH-MobileR is Renesas multi-media ready general purpose CPU.SH-4A CPU core is incorporated with 2D Graphics, H.264 codec, LCDCand 1seg tuner support. It would be suitable for multi-media products.

・ Collections of state-of-art software environments to utilize and synchronize with opensource community development. kernel = 2.6.21-rc5, gcc = 4.2, glibc = 2.5 nptl DirectFB = 1.1.0 – rc1 ( w/dedicated 2DG gfx driver )

Device

Drivers

H/

W

DirectFB ApplicationDirectFB Application

DirectFB Core API ModuleDirectFB Core API Module

GFX drivers for SH7722GFX drivers for SH7722

/dev/fb/dev/fb

Display UnitDisplay Unit 2D Graphics Hardware2D Graphics Hardware

generic GFX Drivergeneric GFX Driver

User

Level

ioctl() mmap()

mmap( )

DirectFB

　 /dev/fb direct

df_andi [Pengin Population:200 FPS: ] 9.3 19.5

Blit [MPixel/sec] *7.689 *27.080

Blit with format conversion [MPixel/sec] *4.996 *17.156

WVGA(800*480)WVGA

(800*480)32kB *2IOcahce32kB *2IOcahce

SH4AL-DSP333MHz@CPU133MHz@DDR

SH4AL-DSP333MHz@CPU133MHz@DDR

USBHostR8A66597 USBHost

R8A66597

128MB NOR Flash

128MB NOR Flash

SDctlSDctl

128MB DDR-SDRAM

128MB DDR-SDRAM

SH-MobileR(SH7722) Touch Panel

Touch Panel

2GDU2GDU

VedeoIOVedeoIO

VOUVOU

MPEG4MPEG4

H.264H.264

USB FcUSB Fc

MMUMMU

KeySCKeySC

JPEG_UJPEG_U

I2CI2C

AP325RM ALGOSYSTEM Co.,Ltd.

MS7722SE01 Hitachi ULSI Systems Co.,Ltd.