need to communicate thru embedded linux

2010-08-12 Thread nidhi mittal hada
Hello all I have just started with embedded lnux for learning purpose . Need your guidance i am trying to communicate rs2332 thru c program on linux My doubts 1)if i dont have real serial port , do i have some way that i can have a simulated one just to test my program a)in

Re: Problem with EXPORT_SYMBOL(irq_to_desc)

2010-08-12 Thread Prabhu nath
Thanks a lot. It was to do with CONFIG_SPARSE_IRQ. Just overshot my sight. I had exported a wrong irq_to_desc() which is under the belt of CONFIG_SPARSE_IRQ which was not configured. Its working now Regards, Prabhu On Wed, Aug 11, 2010 at 10:34 PM, Mulyadi Santosa mulyadi.sant...@gmail.com

Re: need to communicate thru embedded linux

2010-08-12 Thread Anuz Pratap Singh Tomar
On Thu, Aug 12, 2010 at 11:20 AM, nidhi mittal hada nidhimitta...@gmail.com wrote: Hello all I have just started with embedded lnux for learning purpose . Need your guidance i am trying to communicate rs2332 thru c program on linux My doubts 1)if i dont have real serial port , do i have

Re: need to communicate thru embedded linux

2010-08-12 Thread Anuz Pratap Singh Tomar
On Thu, Aug 12, 2010 at 11:54 AM, nidhi mittal hada nidhimitta...@gmail.com wrote: On Thu, Aug 12, 2010 at 11:44 AM, Anuz Pratap Singh Tomar chambilketha...@gmail.com wrote: On Thu, Aug 12, 2010 at 11:20 AM, nidhi mittal hada nidhimitta...@gmail.com wrote: Hello all I have just

Re: demand based power management

2010-08-12 Thread er krishna
Yes its fine, I am just wandering if this option is enabled by bios ? How ? On Wed, Aug 11, 2010 at 9:57 PM, Mulyadi Santosa mulyadi.sant...@gmail.comwrote: On Wed, Aug 11, 2010 at 16:58, er krishna erkris...@gmail.com wrote: Dear All, Can anybody please let me know how to enable demand

Re: demand based power management

2010-08-12 Thread Mulyadi Santosa
On Thu, Aug 12, 2010 at 14:22, er krishna erkris...@gmail.com wrote: Yes its fine, I am just wandering if this option is enabled by bios ? How ? Please don't top post :) By BIOS? Ehm...well, by default it should be -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog:

How does kernel know the IRQ of a device loaded dynamically

2010-08-12 Thread Parmenides
Hi, For some traditional devices, such as floppy, keyboard, etc, the IRQ is static, and their drivers know corresponding IRQs to register their ISR. While for other devices hot plugged, such as USB devices, how does the PIC or APIC allocate the IRQs for their controller? And how does the deriver

Re: need to communicate thru embedded linux

2010-08-12 Thread Victor Rodriguez
Hi On Thu, Aug 12, 2010 at 1:28 AM, Anuz Pratap Singh Tomar chambilketha...@gmail.com wrote: On Thu, Aug 12, 2010 at 11:54 AM, nidhi mittal hada nidhimitta...@gmail.com wrote: On Thu, Aug 12, 2010 at 11:44 AM, Anuz Pratap Singh Tomar chambilketha...@gmail.com wrote: On Thu, Aug 12,

Re: need to communicate thru embedded linux

2010-08-12 Thread Robert P. J. Day
On Thu, 12 Aug 2010, Victor Rodriguez wrote: Recommended Book for embedded beginning Embedded Linux Primer: A Practical, Real-World Approach By Christopher Hallinan there is a 2nd edition of this book coming out shortly. rday --

Re: demand based power management

2010-08-12 Thread er krishna
On Thu, Aug 12, 2010 at 6:35 PM, Mulyadi Santosa mulyadi.sant...@gmail.comwrote: On Thu, Aug 12, 2010 at 14:22, er krishna erkris...@gmail.com wrote: Yes its fine, I am just wandering if this option is enabled by bios ? How ? Please don't top post :) By BIOS? Ehm...well, by default it

Re: How does kernel know the IRQ of a device loaded dynamically

2010-08-12 Thread Mulyadi Santosa
Hi Parmenides On Thu, Aug 12, 2010 at 20:28, Parmenides mobile.parmeni...@gmail.com wrote: Hi, For some traditional devices, such as floppy, keyboard, etc, the IRQ is static, and their drivers know corresponding IRQs to register their ISR. While for other devices hot plugged, such as USB

Re: demand based power management

2010-08-12 Thread John Mahoney
On Thu, Aug 12, 2010 at 3:22 AM, er krishna erkris...@gmail.com wrote: Yes its fine, I am just wandering if this option is enabled by bios ? How ? In sys these values are listed on a per cpu basis. To list possible governors: cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_available_governors

Re: How does kernel know the IRQ of a device loaded dynamically

2010-08-12 Thread Wouter Simons
On 08/12/2010 03:28 PM, Parmenides wrote: Hi, For some traditional devices, such as floppy, keyboard, etc, the IRQ is static, and their drivers know corresponding IRQs to register their ISR. While for other devices hot plugged, such as USB devices, how does the PIC or APIC allocate the IRQs

Re: How does kernel know the IRQ of a device loaded dynamically

2010-08-12 Thread Kaustubh Ashtekar
On Thu, Aug 12, 2010 at 8:36 PM, Mulyadi Santosa mulyadi.sant...@gmail.com wrote: Hi Parmenides On Thu, Aug 12, 2010 at 20:28, Parmenides mobile.parmeni...@gmail.com wrote: Hi, For some traditional devices, such as floppy, keyboard, etc, the IRQ is static, and their drivers know