From: Leif Z. I. <le...@le...> - 2010-12-30 17:09:57
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The wifi chip on the overo fire has the ability to go into sleep or low power modes. How could I initiate this? Is the code written or would I have to write some if so can you point me to the location of the drivers code? Also I I found the command that sets low GPIO 16 turning off the wifi chip and saving me a lot of power, but I cannot figure out how to re initialize the chip. I bring the line high but this doesn't seem to fully get me back to my starting point. Anyways seems like a bad hack, could someone point me to the code that initializes the wifi chip on startup so maybe I can correct this properly. Thanks |
From: Paul N. <pa...@id...> - 2010-12-30 19:39:11
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> The wifi chip on the overo fire has the ability to go into sleep or low > power modes. How could I initiate this? Is the code written or would I > have to write some if so can you point me to the location of the drivers > code? I`m very interested in this too, I can't get it to work for my Realtek/Ralink WiFi USB cards either. Thanks, Paul Nolan, CEO Idruna Software Inc. |
From: Leif Z. I. <le...@le...> - 2010-12-30 20:21:48
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Ya it seems this subject doesn't get the attention it deserve. But I have to have this so I will be doing a lot of work on it if I can't get some help. It seems that Gumstix must have done some minimal development work to get the wifi chip with the overo and just skipped the power management ability since the main stream kernel doesn't support power management. But I am working with the PM branch bc I have to have low power modes. Maybe someone can just point me to the whole in the code for wifi power management so I can get to work on it. I read some place that the driver is not open source for the wifi module on the Fire and is provided from the manufacture. If this is the case most of the work would seem to be already done. If I don't get a reply I am probable going to ask the Beagleboard guys or the TI forum. Someone has to know. Thanks -----Original Message----- From: Paul Nolan [mailto:pa...@id...] Sent: Thursday, December 30, 2010 1:39 PM To: General mailing list for gumstix users. Subject: Re: [Gumstix-users] Wifi sleep / low power > The wifi chip on the overo fire has the ability to go into sleep or low > power modes. How could I initiate this? Is the code written or would I > have to write some if so can you point me to the location of the drivers > code? I`m very interested in this too, I can't get it to work for my Realtek/Ralink WiFi USB cards either. Thanks, Paul Nolan, CEO Idruna Software Inc. ---------------------------------------------------------------------------- -- Learn how Oracle Real Application Clusters (RAC) One Node allows customers to consolidate database storage, standardize their database environment, and, should the need arise, upgrade to a full multi-node Oracle RAC database without downtime or disruption http://p.sf.net/sfu/oracle-sfdevnl _______________________________________________ gumstix-users mailing list gum...@li... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
From: Paul N. <pa...@id...> - 2010-12-30 21:20:34
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Hi Steve, > The proper place to ask questions about the libertas driver would be > on the libertas-dev or linux-wireless mailing lists. Is it only the driver that needs work, or does the kernel need power management support for the driver to perform power management tasks? It isn't just the Wi2Wi module, power management doesn't seem to work with any of the USB WiFi cards I have tried (RT3090, rtl8192cu, one other rtl chip). Thanks, Paul Nolan, CEO Idruna Software Inc. |
From: Steve S. <sa...@gm...> - 2010-12-30 23:10:53
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On Thu, Dec 30, 2010 at 1:20 PM, Paul Nolan <pa...@id...> wrote: > Hi Steve, > >> The proper place to ask questions about the libertas driver would be >> on the libertas-dev or linux-wireless mailing lists. > > Is it only the driver that needs work, or does the kernel need power > management support for the driver to perform power management tasks? It > isn't just the Wi2Wi module, power management doesn't seem to work with > any of the USB WiFi cards I have tried (RT3090, rtl8192cu, one other rtl > chip). I'm pretty sure the answer is "all of the above". OMAP power management in mainline linux is far from "done". I haven't spent a lot of time looking at this, so I can't really give an educated answer. Kevin Hillman is leading the kernel pm effort for TI, but a number of others are also working in this area. Asking on the lists I mentioned for libertas specific questions and linux-omap for kernel related questions are your best bets for getting good information. Steve |
From: Leif Z. I. <le...@le...> - 2010-12-30 22:14:35
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You might be on to something, I bet it is something missing in the power management support in the kernel and not to the drivers. .....sigh So I went to this place: http://elinux.org/OMAP_Power_Management#Work-in-Progress_.28WIP.29 Then to: http://git.kernel.org/?p=linux/kernel/git/khilman/linux-omap-pm.git And it looks like the last change was in 2009?????? Is the PM branch dead?? If so any other options? -----Original Message----- From: Paul Nolan [mailto:pa...@id...] Sent: Thursday, December 30, 2010 3:20 PM To: General mailing list for gumstix users. Subject: Re: [Gumstix-users] Wifi sleep / low power Hi Steve, > The proper place to ask questions about the libertas driver would be > on the libertas-dev or linux-wireless mailing lists. Is it only the driver that needs work, or does the kernel need power management support for the driver to perform power management tasks? It isn't just the Wi2Wi module, power management doesn't seem to work with any of the USB WiFi cards I have tried (RT3090, rtl8192cu, one other rtl chip). Thanks, Paul Nolan, CEO Idruna Software Inc. ---------------------------------------------------------------------------- -- Learn how Oracle Real Application Clusters (RAC) One Node allows customers to consolidate database storage, standardize their database environment, and, should the need arise, upgrade to a full multi-node Oracle RAC database without downtime or disruption http://p.sf.net/sfu/oracle-sfdevnl _______________________________________________ gumstix-users mailing list gum...@li... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
From: Paul N. <pa...@id...> - 2010-12-30 23:12:39
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> The pm branch is still active, but it is really not for general use! Is the pm branch required to get WiFi power management working? Thanks, Paul Nolan, CEO Idruna Software Inc. |
From: Steve S. <sa...@gm...> - 2010-12-30 21:00:45
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On Thu, Dec 30, 2010 at 12:21 PM, Leif Zars II <le...@le...> wrote: > I read some place that the driver is not open source for the wifi module on > the Fire and is provided from the manufacture. If this is the case most of > the work would seem to be already done. > > If I don't get a reply I am probable going to ask the Beagleboard guys or > the TI forum. Someone has to know. Those would be the wrong places to ask, since the Beagleboard does not have a Wi2Wi module on the board and TI does not make the Wi2Wi module. The Overo kernel uses the mainline linux libertas_sdio driver - nothing is changed, you get the same functionality as any other system that uses that driver. The proper place to ask questions about the libertas driver would be on the libertas-dev or linux-wireless mailing lists. Steve |
From: Leif Z. I. <le...@le...> - 2010-12-30 21:15:00
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Sweet Steve thanks, I am a noob on most of this so that helps a lot. -----Original Message----- From: Steve Sakoman [mailto:sa...@gm...] Sent: Thursday, December 30, 2010 3:01 PM To: General mailing list for gumstix users. Subject: Re: [Gumstix-users] Wifi sleep / low power On Thu, Dec 30, 2010 at 12:21 PM, Leif Zars II <le...@le...> wrote: > I read some place that the driver is not open source for the wifi module on > the Fire and is provided from the manufacture. If this is the case most of > the work would seem to be already done. > > If I don't get a reply I am probable going to ask the Beagleboard guys or > the TI forum. Someone has to know. Those would be the wrong places to ask, since the Beagleboard does not have a Wi2Wi module on the board and TI does not make the Wi2Wi module. The Overo kernel uses the mainline linux libertas_sdio driver - nothing is changed, you get the same functionality as any other system that uses that driver. The proper place to ask questions about the libertas driver would be on the libertas-dev or linux-wireless mailing lists. Steve ---------------------------------------------------------------------------- -- Learn how Oracle Real Application Clusters (RAC) One Node allows customers to consolidate database storage, standardize their database environment, and, should the need arise, upgrade to a full multi-node Oracle RAC database without downtime or disruption http://p.sf.net/sfu/oracle-sfdevnl _______________________________________________ gumstix-users mailing list gum...@li... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
From: Steve S. <sa...@gm...> - 2010-12-30 23:04:54
|
On Thu, Dec 30, 2010 at 2:14 PM, Leif Zars II <le...@le...> wrote: > You might be on to something, I bet it is something missing in the power > management support in the kernel and not to the drivers. > .....sigh > > So I went to this place: > http://elinux.org/OMAP_Power_Management#Work-in-Progress_.28WIP.29 > > Then to: http://git.kernel.org/?p=linux/kernel/git/khilman/linux-omap-pm.git > And it looks like the last change was in 2009?????? Is the PM branch dead?? Huh?? http://git.kernel.org/?p=linux/kernel/git/tmlind/linux-omap-2.6.git;a=shortlog;h=refs/heads/pm The pm branch is still active, but it is really not for general use! I feel the need to repeat a comment I made on the list a while back: > If it works for you, that it great! But please bear in mind this > quote from Kevin Hilman (maintainer of the PM branch) on the > linux-omap list yesterday: > "What do you need from the PM branch that is not in l-o master? >The PM branch is *experimental*, and is under significant change while > parts that are not yet ready for mainline are being reworked and in some > cases completely re-written. > IOW, the PM branch is unstable and should not be trusted. (I can say > that, I am the maintainer.) ;) " |
From: Leif Z. I. <le...@le...> - 2010-12-30 23:47:01
|
Thanks, I don't know my way around this kind of development environment yet. The only reason I am looking at the PM branch is to take advantage of the low power states of the omap. Specifically I want to be able to turn everything off but an image on my attached LCD or HDMI. So things like cutting the cpu clock cycle down and turning off unused devices like the wifi chip are what I believe will help. Also I am looking to get a lcd screen with a remote frame buffer so the cpu may be able to go into deep sleep cycles for tens of seconds at a time. Power usage is a big deal, so if I don't need the PM branch for this let me know. As of now I believe I have had success with low power states when the cpu is idle. But I am not able to bring back up my wifi once I bring it down with that hardware pin 16 I think. Anywho if you think I should talk to Kevin Hilman for advice I will, thanks again for your knowledge. Thanks -----Original Message----- From: Steve Sakoman [mailto:sa...@gm...] Sent: Thursday, December 30, 2010 5:05 PM To: General mailing list for gumstix users. Subject: Re: [Gumstix-users] Wifi sleep / low power On Thu, Dec 30, 2010 at 2:14 PM, Leif Zars II <le...@le...> wrote: > You might be on to something, I bet it is something missing in the power > management support in the kernel and not to the drivers. > .....sigh > > So I went to this place: > http://elinux.org/OMAP_Power_Management#Work-in-Progress_.28WIP.29 > > Then to: http://git.kernel.org/?p=linux/kernel/git/khilman/linux-omap-pm.git > And it looks like the last change was in 2009?????? Is the PM branch dead?? Huh?? http://git.kernel.org/?p=linux/kernel/git/tmlind/linux-omap-2.6.git;a=shortl og;h=refs/heads/pm The pm branch is still active, but it is really not for general use! I feel the need to repeat a comment I made on the list a while back: > If it works for you, that it great! But please bear in mind this > quote from Kevin Hilman (maintainer of the PM branch) on the > linux-omap list yesterday: > "What do you need from the PM branch that is not in l-o master? >The PM branch is *experimental*, and is under significant change while > parts that are not yet ready for mainline are being reworked and in some > cases completely re-written. > IOW, the PM branch is unstable and should not be trusted. (I can say > that, I am the maintainer.) ;) " ---------------------------------------------------------------------------- -- Learn how Oracle Real Application Clusters (RAC) One Node allows customers to consolidate database storage, standardize their database environment, and, should the need arise, upgrade to a full multi-node Oracle RAC database without downtime or disruption http://p.sf.net/sfu/oracle-sfdevnl _______________________________________________ gumstix-users mailing list gum...@li... https://lists.sourceforge.net/lists/listinfo/gumstix-users |