#rockbox 2013-11-26

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#rockbox log for 2013-11-26

00:01:53	pamaury	indeed
00:02:38	fs-bluebot	Build Server message: 3Build round completed after 483 seconds.
00:02:54	pamaury	ah, you put empty <reg></reg> registers
00:03:29	pamaury	the parser is pretty stupid and if you don't put any <addr> field in it, it will not be treated as a register with no instanciation
00:04:06	pamaury	actually this:
00:04:06	pamaury	<reg name="GPIO_PADR" addr="0x00">
00:04:06	pamaury	is invalid: the addr="0x00" part will be ignored
00:04:22	wodz	why?
00:04:48	pamaury	because it's not in the spec
00:05:38	wodz	but why? missing </reg> or something else?
00:05:44	pamaury	there is a different between a register and instanciation of that register: <reg> basically defines a register "kind" and <addr> defines an instance of this kind at a particular address
00:06:08	pamaury	so the correct way is:
00:06:08	pamaury	<reg name="GPIO_PADR"><addr name="GPIO_PADR" addr="0x00" /></reg>
00:06:17	wodz	I see
00:06:44	pamaury	and qeditor only display instanciation of the registers
00:06:53	pamaury	so if there no <addr>, it doesn't show anything
00:07:10	pamaury	yeah the format was not really conceived for a human to write ^^
00:07:18	wodz	blah, a lot of typing then
00:07:48	pamaury	maybe we could add support for such "shortcut" we are commonplace
00:07:57	pamaury	*when they are
00:08:13		Quit Zagor (Quit: Clint excited)
00:08:18	pamaury	that should be easy
00:09:35	wodz	That would save me a lot of typing
00:10:11	pamaury	ok, I'll give it a try, wait for 5 min
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00:23:00	pamaury	wodz: pushing to gerrit...
00:23:45	pamaury	g#679
00:23:48	fs-bluebot	3Gerrit review #679 at http://gerrit.rockbox.org/r/679 : 3regtools: add shortcut notation for simple register in the desc files by Amaury Pouly (changes/79/679/1)
00:27:44	wodz	pamaury: works as expected
00:29:17	wodz	sleep()
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00:29:49	fs-bluebot	Build Server message: 3New build round started. Revision f04d3c5, 243 builds, 34 clients.
00:33:50	[Saint]	JdGordon: http://forums.rockbox.org/index.php/topic,43661.msg221576.html#msg221576 ...really?
00:34:03	[Saint]	Core functionality fails, and your answer is to edit the .wps?
00:35:13	[Saint]	JdGordon: perhaps you parsed OP's statement incorrectly? To be clear, OP is saying that "clear backdrop" fails, which has been reported by a few people, the answer to this is not to edit the .wps :)
00:36:37	fs-bluebot	Build Server message: 3Build round completed after 409 seconds.
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00:40:28	JdGordon	[Saint]: clear backdrop is for the colour
00:40:38	JdGordon	its got nothing to do with the backdrop image in the wps
00:41:18	[Saint]	...errrr...no?
00:41:46	[Saint]	It clears the backdrop.
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00:42:07	JdGordon	no it doesnt?
00:42:16	[Saint]	As far as I am aware it has always behaved in this fashion.
00:42:28	[Saint]	I just tested it, and it certainly does clear the backdrop.
00:42:58	gevaerts	It won't clear a wps-specified backdrop
00:43:06	[Saint]	It just did.
00:43:40	[Saint]	I just loaded up cabbiev2, selected clear backdrop from the theme settings - bam, no backdrop.
00:43:59	[Saint]	As far as I was aware this was intended functionality.
00:44:06	JdGordon	in the menus or wps?
00:44:21	[Saint]	both.
00:44:28	gevaerts	Also, I seem to remember that the cabbie backdrop is not wps-specified
00:45:14	[Saint]	It is.
00:45:26	JdGordon	ah, no, i was mistaken
00:45:35	JdGordon	it clears the backdrop image specified in the .cfg
00:48:13	[Saint]	FWIW, this has been reported before - but I have never been able to reproduce it reliably.
00:48:29	[Saint]	I don't think it has been reported in an official capacity, I'll have a look.
00:49:24	[Saint]	Oh - can someone do me a favor and close out http://www.rockbox.org/tracker/task/12903?project=1&type=2&order=dateopened&sort=desc as "not a bug"? Thanks.
00:50:45	[Saint]	AH, that reminds me, there is also another issue with backdrops that I believe has been reported officially.
00:51:06	[Saint]	Sometimes when applying a theme the backdrop won't take until the device is rebooted.
00:51:18	*	[Saint] looks
00:51:50	[Saint]	Ah, yes, copper reported this a while ago:
00:51:51	[Saint]	http://www.rockbox.org/tracker/task/12892
00:52:21	JdGordon	hmmm
00:52:35	JdGordon	the backgrounds do some fancy complex stuff so yeah, there might be a bug :p
00:53:28	[Saint]	I had a look the other day but I got distracted.
00:54:15		Quit Tukeke (Quit: Tukeke)
00:54:21	[Saint]	I was checking to see why buflib thinks there's a bitmap background loaded when the background is only being drawn by the background viewport color.
00:54:54	[Saint]	I'm fairly sure that is a bug as well, but I get lost in the theme engine so easily.
00:55:36		Quit lonoxmont (Ping timeout: 272 seconds)
00:56:27	[Saint]	Even using the fallback theme, which most certainly doesn't have a bitmap backdrop, you can see the allocation in the buflib allocation debug screen.
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00:57:32	[Saint]	Hmmmm. Clearing the backdrop doesn't purge the buflib allocation.
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00:58:07	[Saint]	I guess dynamically unloading objects is a bit too much to ask.
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01:37:19	JdGordon	[Saint]: once i et my internet at home working I'll investigate (If im reminded :p )
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01:37:40	JdGordon	its quite likely its broken when i added the background layer thing which requires a backdrop image buffer
01:39:25	[Saint]	ahhhh, right.
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01:40:00	[Saint]	I just noticed it when I was trying to make a config that allocates as little to RAM as possible.
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01:40:29	*	JdGordon will also be more motivated once his 5.5g is working again
01:40:39	[Saint]	And a 320x240 bitmap isn't /huge/ I know, but every little bit counts.
01:40:51	[Saint]	WHat's up with your Video?
01:41:17	[Saint]	WHat do you need to get it working again? I may have asked this before but I can't remember - I may have some spares for you.
01:42:54	[Saint]	BBIAB
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02:26:09	chrisjj_	Can anyone tell why it is that a new target needs file view plug-ins to be ported, as opposed to just recompiled?
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03:12:00	foolsh	chrisjj_: Most rockbox plugins need very specific changes added to them in order to support new targets, they will not compile without errors until those specific changes are added
03:22:06	chrisjj_	foolsh: Sure, but is that really true for mere file view plug-ins? Can't they just write to a generic virtual screen buffer?
03:29:30	foolsh	And how would the user interact with that plugin? What about hardware limitations that are present on some targets and not others. It's those kinds changes that are specific to the individual targets. Rockbox is very hardware specific with it's code, generic workings are extremely hard to implement without a lot of overhead code to support them.
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05:05:47	chrisjj_	foolsh: OK, I had thought that the I/O for a file viewer was simple enough to be generalised, esp. since there are no real-time requirements to challenge the code overhead. I guess not. Thanks.
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09:56:23	wodz	chrisjj_: You are missing the point probably. What is missing to make plugins work on new target is keymap. Each target has different number of keys, different physical location of keys and different combos allowed. You need to go through and define keymaps. Thats lots of work (and rather boring one)
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10:46:30	wodz	Looking at onda's exception handler code for me it seems it does excessive context save. s0-s8 are guaranteed by convention to be preserved across the call to C function.
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10:51:12	wodz	hmm, it also should not use sp to save context but I guess this is not important in rb
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11:13:10	pamaury	lebellium: with my fix, the nwe360 is doing much better: I'm already at 13 hours and still plenty of battery
11:15:12	wodz	pamaury: which fix?
11:15:33	pamaury	don't leave sd card in TRAN mod
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11:25:15	lebellium	pamaury: sounds good :D
11:31:51	lebellium	what is TRAN mod?
11:32:38	pamaury	TRAN mode, that's one of the many possible states of the SD card. You must be in TRAN mode to be able to transfer any data
11:34:08	wodz	pamaury: is it for internal eMMC?
11:34:39	pamaury	both eMMC and SD. But the effect seems much more important on SD
11:34:46	pamaury	unfortunately, the specification is quite vague about power management. In eMMC card you can explicitely put the card in to sleep (which we don't yet) but in SD cards you can't. Many will just automatically enter sleep but some don't apparently.
11:35:56	wodz	Does nwe360 have sd slot? I recall sonys hesitant to put card slot in their players
11:36:13	lebellium	no
11:36:27	pamaury	wodz: internal SD
11:36:50	lebellium	No Sony mp3 player has a SD slot. Only a few very old models have a MS slot
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12:09:45	pamaury	I see that chrisjj has modified a lot of things in TargetStatus, could someone had a look, it seems like a pretty big edit
12:16:14	*	wodz looking
12:20:02	wodz	It seems to be mostly reshufle of the stuff in the table. He sorted targets by name
12:20:07	foolsh	It looks like an attempt to alphabetize the tables, instead of using the sort
12:20:10	foolsh	yup
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12:22:06	wodz	I wonder why Toshiba Gigabeat is after Archoses :P
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12:27:12	lebellium	he just gathered models of the same brand together
12:27:20	lebellium	but no alphabetical order
12:27:23	lebellium	so it's a bit strange
12:28:25	gevaerts	I suspect it's sorted on link
12:28:44	gevaerts	I mean, the gigabeat wiki page is GigabeatFX, not ToshibaGigabeatFX
12:29:01	lebellium	indeed
12:29:03	wodz	that was my impression too
12:30:03	lebellium	but if we display Philips and Toshiba and not only Gigabeat and GoGear, I would rather sort by full name
12:31:56	wodz	lebellium: Its a wiki you know...
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12:37:32	lebellium	wodz: sure, but that doesn't keep from asking the others if they agree with you :)
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15:17:35	pamaury	lebellium: ever heard of the YP-CP3 ?
15:18:07	lebellium	pamaury: I reviewed it and own it of course :
15:18:09	lebellium	:)
15:18:39	pamaury	of course :) how is it ?
15:18:51	lebellium	here is my review
15:18:55	lebellium	http://labo.generationmp3.com/2009/10/30/test-et-video-du-samsung-cp3/
15:19:02	lebellium	it's one of the worst mp3 players I have reviewed
15:19:32	pamaury	ah thanks, very thorough review as usual
15:19:58	pamaury	why is it that bad ? is it the shape or the software ?
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15:21:09	lebellium	the software mainly. But maybe the hardware too since the Samsung R&D told me they could not get the video format ratio respected (can only play any video full screen) because the CPU is not powerful enough
15:21:18	lebellium	I don't know if that's true or if they were too lazy
15:21:36	pamaury	do you know the cpu ? I don't think you have the service manual for this one
15:22:24	lebellium	It's the only Samsung player with a Rockchip CPU :) RK2706B
15:23:20	pamaury	oh, really ?! I'm going to contact the vendor right away then, I found a cheap one on leboncoin
15:23:31	lebellium	Samsung decided that a player designed for the Chinese and Russian market doesn't deserve a good hardware and software. You know, developing countries only need bad products :)
15:23:56	pamaury	When I saw the interface I thought it looked familiar, now I know why ^^
15:25:02	lebellium	unfortunately I have no recovery tool or service manual for this one
15:25:11	lebellium	I only have the firmwares
15:25:14	copper	lebellium: needs moar RMAA :)
15:26:12	lebellium	I'm not familiar with RMAA :)
15:26:35	copper	for a reviewer, that's basically a crime
15:30:44	lebellium	pamaury: funny fact: Since the R&D was not able/did not want to fix the screen ratio for videos, they released firmware 2.10 to fix only one minor thing I reported. A typo in some languages "insert mircoSD" instead of "insert microSD". It's the most useless firmware release I have experienced...
15:31:35	lebellium	That's a bit off-topic but I have many funny anecdotes about stupid sammy :)
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15:43:49	pamaury	haha, most useless firmware release ever
15:45:01	lebellium	I don't know how much different from a generic RK27 it is
15:45:37	lebellium	but I assume the port would be quite easy
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15:47:37	lebellium	and it could be used on SD since there is no NAND support yet
15:49:54	pamaury	yeah exactly
15:50:15	pamaury	my guess it's that they hardly modified the generic design
15:50:26	pamaury	but first I need to be able to buy this mp3 ^^
15:51:50	lebellium	but the battery seems to be good quality
15:52:06	lebellium	I haven't turned it on for months
15:52:12	lebellium	and now the battery is still full
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15:58:02	lebellium	BTW, is your E360 still running?
15:59:47	pamaury	yeah
16:00
16:00:09	pamaury	15 hour and battery voltage is still at ~3.8V, that's pretty good
16:00:47	lebellium	so that would fix the issue on both NWZ and Fuze+?
16:01:30	pamaury	probably yeah
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16:19:19	foolsh	pamaury: your no TRAN mode changes, are they on Gerrit?
16:20:48	foolsh	Guess not I don't see em, no biggie just bored
16:21:47	pamaury	no, it's a revert of a commit basically
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16:22:09	pamaury	I'm waiting for the benches to end before comitting
16:23:21	foolsh	On a side note I think FS #12899 might be in the lcd driver
16:23:21	fs-bluebot	http://www.rockbox.org/tracker/task/12899 3[fuze+] screen jumps navigating in upside-down mode (bugs, unconfirmed)
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16:35:13	pamaury	foolsh: omg, some people really use the upside mode ?!
16:35:20	pamaury	ok I'll try that when the bench ends
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16:35:59	ikeboy	can someone close FS #12858 ?
16:36:00	fs-bluebot	http://www.rockbox.org/tracker/task/12858 3Mpegplaye freeze sansa fuze plus (bugs, unconfirmed)
16:36:22	ikeboy	It's no longer a bug and was never confirmed by anyone besides for me
16:38:52	ikeboy	Wow, that was fast. Thanks.
16:39:45	pamaury	I'm always fast at closely bugs ;)
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18:53:03	lorenzo92	I'm happy to see that there is a port-party (especially by pamaury) :D
18:53:42	lorenzo92	pamaury: what did you modify to fix the battery drain on the cited targets?
18:54:19	pamaury	don't put SD/eMMC in TRAN mode all the time
18:55:34	bertrik	TRAN mode prevents the card from going to some internal low-power mode, or something like that?
18:57:20	pamaury	apparently
18:58:27	lorenzo92	interesting, not audio related stuff at all ^^
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18:59:08	lorenzo92	so afterwards we should also see if setting a "0" bias (not -50% that should decrease audio quality) affects battery life too
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19:00:20	pamaury	feel free a do a battery bench ^^ but maybe after I commit this fix and we make sure it's the only regression
19:23:21	chrisjj_	wodz: "that doesn't keep from asking the others if they agree with you" Which others? And where should one ask?
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19:56:44	chrisjj_	lebellium: "I would rather sort by full name" Thanks for the suggestion. Now done.
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20:34:10	pamaury	This freescale code is a nightmare, I don't know if I'll ever succeed in reversing the OF FTL
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21:54:11	pamaury	lebellium_gs2: nwz has reached 20h and still going...I'm not sure it will reach 30h but it's still quite an improvement
21:54:57	lebellium_gs2	pamaury: great, that's already twice as much :)
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22:06:49	gevaerts	pamaury: I've just pushed g#680 to gerrit to try and work around the 0xEE thing
22:06:58		Quit fs-bluebot (Ping timeout: 272 seconds)
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22:07:52	gevaerts	According to http://msdn.microsoft.com/en-us/library/windows/hardware/ff537430%28v=vs.85%29.aspx , "If there is no string descriptor at 0xEE, or the string descriptor at that index is not a valid OS string descriptor, Windows assumes that the device does not contain any OS feature descriptors", so that should behave exactly the same as a STALL on the windows side, except that it won't kill our devices if we have issues with STALL
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22:08:44	gevaerts	Hmm
22:08:46	gevaerts	g#680
22:08:48	fs-bluebot	3Gerrit review #680 at http://gerrit.rockbox.org/r/680 : 3Return a valid USB string descriptor for index 0xEE. by Frank Gevaerts (changes/80/680/1)
22:08:51	gevaerts	Ah, better :)
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22:16:14	pamaury	gevaerts: yeah that's what I suggested when saying we could return an empty string
22:16:26	gevaerts	Yes
22:16:40	gevaerts	I went for a non-empty one because we have three just lying around anyway :)
22:16:56	pamaury	sure :)
22:16:58	gevaerts	That saves a byte or four I think
22:17:28	gevaerts	I'm actually thinking that we should just push that and tell people to test current builds
22:18:00	bertrik	what's the problem with STALL, we can't stall on some platforms, or stall works too good?
22:19:06	gevaerts	We don't recover from stall properly on at least ams
22:19:25	gevaerts	It's not at all clear why
22:19:37	gevaerts	And windows causes a stall on first connect by default these days
22:19:45	bertrik	hm
22:20:37	bertrik	I'd rather have the stall fixed than avoiding it and hope it never happens in any other scenario, but I realise the truth is probably that noone will fix ams usb thoroughly
22:21:29	gevaerts	Well, it shouldn't ever happen in normal operation.
22:21:37	gevaerts	This 0xee thing really is a weird exception
22:21:58	gevaerts	And what g#680 does is perfectly valid
22:21:59	fs-bluebot	3Gerrit review #680 at http://gerrit.rockbox.org/r/680 : 3 by Frank Gevaerts (changes/80/680/1)
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22:22:38	pamaury	bertrik: that's not even the problem, the problem is that no one knows how to recover from this STALL, it seems like a hardware bug
22:22:49	pamaury	probably with a workaround but we need to find it
22:23:09	pamaury	I'm still disassembling amsv2 ROM but it's really difficult
22:23:20	bertrik	I don't clearly remember how a stall get cleared
22:23:31	bertrik	host sends a "clear stall", right?
22:23:41	gevaerts	Well, there definitely is a workaround, the OF doesn't have the problem
22:23:41	bertrik	on the control endpoint
22:23:51	gevaerts	bertrik: this is on EP0, so it gets auto-cleared
22:24:42	bertrik	should, but doesn't? something like that?
22:24:50	gevaerts	Yes
22:25:02	gevaerts	The hardware is documented as doing this automatically
22:25:20	gevaerts	But while it seems to actually clear the STALL, nothing else then still works
22:25:24	bertrik	pamaury: have you looked at it with the USB analyzer?
22:26:15	gevaerts	bertrik: someone has. See FS #12910
22:26:15	fs-bluebot	http://www.rockbox.org/tracker/task/12910 3Sansa zip clip fails to enumerate over USB under Windows. (bugs, unconfirmed)
22:26:18	bertrik	I seem to remember that USB mass storage relies quite heavily on stall too
22:26:30	bertrik	but that's on the bulk endpoints
22:27:09	gevaerts	It doesn't really. You have to stall on error conditions, but those shouldn't happen anyway
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22:30:53	bertrik	gevaerts: how do I interpret that log? non-indented is host, indented is device?
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22:31:57	gevaerts	bertrik: have a look at the second image. That one is a bit clearer and actually shows the issue
22:32:06	gevaerts	indented means the actual packets
22:32:52	gevaerts	This software actually allows you to collapse entire transfers you don't care about
22:34:07	chrisjj	chrisjj_lebellium: re http://www.rockbox.org/wiki/TargetStatus , I see your previous edit left some targets out of order. If there was a reason for this, do please let me know and accept my apologies for 'correcting' it :)
22:36:39	bertrik	gevaerts: are the NAKs significant in the second log?
22:36:52	lebellium_gs2	chrisjj: there was no reason :) so no problem
22:37:15	gevaerts	bertrik: yes. Apparently they don't ever stop
22:39:46	bertrik	NAKs happen automatically when the host sends an IN packet and the device controller has nothing to send, in the device controllers I know
22:40:05	gevaerts	Yes
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22:42:28	chrisjj	lebellium_gs2: OK! Thanks.
22:45:44	bertrik	What's the closest thing to a datasheet we have for the AMS usb controller?
22:47:02	pamaury	STM32F4xxx
22:47:19	chrisjj	For anyone not bored by documentation detail :) do you too find http://www.rockbox.org/wiki/TargetStatus table column headers fail to sort?
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22:56:17	pamaury	i don't know if it's relevant but the ROM of the clip+ has few puzzling pieces of code:
22:56:17	pamaury	1) it handles the SOF interrupt but does nothing of it, simply clear it
22:56:17	pamaury	2) it handles IN token on empty fifo interrupt on IN endpoints but does nothing of it either
22:57:51	pamaury	3) it handles OUT token with ep disabled and does nothing
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23:23:37	bertrik	the AMS usb driver seems full of all kinds of hacky comments
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23:24:57	wodz	pamaury: This samsung rk2706b dap looks pretty much like reference design with small twist.
23:25:09	bertrik	well, maybe not full, but there are some things I'd like to be sure of, like is EP2 really an alias for EP0, like it says?
23:26:05	pamaury	wodz: yeah indeed
23:26:23	pamaury	bertrik: what ?!
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23:26:47	wodz	As far as I can tell video is decoded on DSP core which is rather powerful. The lcdif has hw scaling block so I would say samsung R&D did poor job OR rockchip didn't support them with proper documentation.
23:27:07	wodz	decoders are in binary form in SDK
23:27:30	wodz	and no free toolchain nor documentation is available for ZSP500 core
23:29:09	pamaury	yeah I pretty much stalled on the zsp, it would be nice to work on it but so many things to do
23:29:14	pamaury	and I guess writing a decoder on this dsp would not be trivial
23:29:32	pamaury	bertrik: where did you find this comment ?
23:29:57	wodz	pamaury: we could offload some stuff to dsp cop BUT form most audio arm core is enough so why bother
23:30:22	wodz	*for
23:30:37	bertrik	usb-drv-as3525 line 159
23:31:11	pamaury	exactly
23:31:11	pamaury	it's just fun to be able to use the whole hardware though
23:32:04	pamaury	this is not the driver for amsv2
23:33:01	wodz	Anyone knows MIPS? I can't wrap my head around exception dispatcher. Every implementation I saw saves whole set of GPRs but according to my understanding s0-s8 registers are saved anyway in function prologue if it wants to use it. This would save 9 registers push/pop on every exception (irq)
23:33:06	pamaury	the bug we are talking about affects sansa AMSv2 as far as I know
23:33:25	pamaury	wodz: sorry I don't :(
23:34:38		Quit lorenzo92 (Ping timeout: 272 seconds)
23:34:57	bertrik	pamaury: argh, sorry
23:35:21	wodz	pamaury: I would also like to fully utilize the hardware but there are less exotic functions to implement
23:36:04	pamaury	like NAND...
23:36:16	wodz	and this MIPS thingy caught my attention...
23:36:31	wodz	like USB
23:36:45	pamaury	also...
23:37:53	pamaury	I swear it, if I meet the guy who wrote the Sansa AMS ROM, I will kill him
23:38:17	pamaury	There should be a law to forbid writing usb drivers likes this one
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23:58:01	pamaury	yeah, I understood how irq dispatch work on this ROM: irq_handler() calls usb_globals->handle_irq() whichs calls this->thing->handle_irq() which calls this->sub->hwdrv->handle_irq()
23:58:09	pamaury	that's perfectly sensible now

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