Nishanth' tech rambles

Wow.. a blast of new sites for omapzoom.. And then I see this on the new omapzoom google groups !!! * MPEG4 Video Dec * H263 Video Dec * JPEG Dec * JPEG Enc * AAC Dec https://gforge.ti.com/gf/project/openmax/frs/?action=index And you also now have a wiki for omap

Got this link from a colleague - kinda useful if you would like to use it for your own purposes.. quote from the site: PLATO is a tool for displaying and analyzing software traces from an application being debugged. It connects to TTIF (libttif.so, included) which provides a lower overhead replacement for printf(), so as to minimize the chance that timing related bugs disappear when you enable debug traces, and also some binary trace APIs. PLATO can be running on a separate PC from the application being debugged, making it suited for embedded development. PLATO will decode/filter/display/visualize the traces

I have a confession to make: I am fanatic about clean code. I like it simple and I like it elegant. Few days back, I had a chat on linux omap mailing list on what I'd dream to see instead of a half a dozen cpu_has_feature_XYZ() APIs in the system.. The thought is more of this form: Some sort of infrastructure which is common to all silicons,platforms exist which provides method to register the tuple (silicon_rev_id | ip_module_rev_id, feature_errata_id) Specific drivers such as DMA, I2C, McBSP, PRCM etc.. on registration provides to the system the an array of tuples for that device. Platform on bootup provides the platform_data to the driver, which allows the driver to start, but now, it can also detect cpu_rev and can grap it's own IP Module rev from it's own register.. -> that is provided to the infrastructure Every time there is a need to check to enable/disable feature/errata, all the code needs to do is: if (is_enabled(dev, OMAP3_ISP) ) { do my stuff; } is...

Finally irritated with a bunch of CaMELcASinG, decided to write a small script albeit not too clean or optimized for the job of a search and destroy Since it is weird to write my own c interpreter to find the right targets to replace, I use output of ctags to generate tags file. if you are using kernel, you could just do a make tags to get the same output file. #!/bin/bash # Silly little script to replace CaMELCaSInG to lower_casing # Half a zillion thoughts later, # why not use ctags which has c interpreter already to do # function identification for us? if [ ! -r 'tags' ]; then echo "Sorry.. no tags file!" exit 1 fi if [ ! -r "$1" ]; then echo "I need a directory or a file for replacing.." exit 2 fi DIR_FILE=`echo "$1"|sed -e "s/\//\\\//g"` # tags have the following notation in field 4 (tab seperated) # e - enum value # d - define # f - function # F - File itself # g - enum type # m - structure parameter # p - prototype # r...

Kevin (PM) has put some cool stuff up on elinux page. may want to check it out..

Check this script out: for i in /sys/devices/system/cpu/cpu[0-9]; do echo $i `cat $i/cpufreq/scaling_governor`; done and see here for a description and this for a bit of history

Been feeling guilty of not blogging the last few months.. anyways, here is something of interest. For all those interested, see here LinuxCon takes place on Sept 21-23 -> registration is running if you like to take part in. there is also bunch of parallel conferences happening. see the list here what would really be interesting for OMAP is the linux plumber's conf and Han's new V4l2 plan Be there if you would like to see a new architecture for OMAP3 and beyond taken care in new spec of V4l2...