On Fri, Apr 9, 2010 at 7:32 PM, Mauro Carvalho Chehab <mchehab@xxxxxxxxxx> wrote: > [1] Yet, none of the in-hardware decoders allow resume, AFAIK. With a software > decoder, the IR IRQ might be used to wake, but this means that everything, > even a glitch, would wake the hardware, so this won't work neither. On my embedded hardware there is 100KB of static RAM on the CPU die. It is preserved even in deep sleep. An IR pulse can wake the CPU and run code in this 100KB RAM. Then the CPU can decide whether it wants to power on main RAM and restore the OS. But implementing this is outside the scope of the Linux kernel. In someways this is how an MSMCE behaves in suspend. There is code running on the MCU inside the MSMCE receiver. Too bad we can't tell it a pattern to watch for and then trigger USB wake up. It is easy to build a MSMCE clone, maybe someone will clone it and add the wakeup pattern match. An enterprising hacker can probably change the firmware in the existing devices. -- Jon Smirl jonsmirl@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
