[Letux-kernel] crtouch driver - inquiry to original devs

Sergei Poselenov sposelenov at emcraft.com
Sun Aug 14 09:11:13 CEST 2016 

Hello Andrey,

The driver published in our 4.x Linux tree on GitHub
https://github.com/EmcraftSystems/linux-upstream/blob/linux-cortexm-2.0.0/drivers/input/touchscreen/crtouch_mt.c works for us. Try to use it in your project.

Regards,
Sergei Poselenov,
Emcraft Systems

On Wed, 2016-08-10 at 02:18 +0300, Andrey Utkin wrote:
> Dear developers of crtouch driver,
> 
> First let me thank you for your work which we use.
> 
> We have forward-ported your driver to recent kernel for a Pyra Handheld
> project. Our main developer have just run first runtime tests and there
> is a first issue (see quote below).
> 
> At this early stage of Pyra Handheld project we have only one developer
> with access to hardware prototypes, and he has a lot of things to work
> on, so we would highly appreciate your cooperation.
> 
> We don't know - maybe this specific issue turns out trivial and there
> will be no more problems, but anyway I dare to ask.
> 
> Do you have any better revision of this driver than what we are based
> on?
> 
> http://git.goldelico.com/?p=gta04-kernel.git;a=shortlog;h=refs/heads/work/hns/input/crtouch
> 
> Are you interested in pushing this driver to mainline (upstream) kernel?
> 
> Are you interested in improving actual driver functionality?
> 
> Would you agree to review and comment our patches to this driver?
> 
> 
> On Tue, Aug 09, 2016 at 11:44:11PM +0200, projects at goldelico.com wrote:
> > Hello,
> > 
> > A new issue has been created:
> > 
> > 731 - make CRTOUCH driver working
> > Project: Letux Kernel
> > Status: New
> > Reported by: Nikolaus Schaller
> > Labels:
> >  Type:Defect
> >  Priority:Low
> >  Device:Pyra
> >  Device:GTA04b7
> > 
> > Description:
> > 
> > we have merged a driver and it is configured / probed.
> > 
> > But reading the crtouch device returns:
> > 
> > root at letux:/sys/class/crtouch_dev/crtouch_dev# cat /dev/crtouch_dev
> > [  279.277457] Unhandled fault: page domain fault (0x01b) at 0xb6e33000
> > [  279.284161] pgd = eb6f4000
> > [  279.287025] [b6e33000] *pgd=ab677835, *pte=afff979f, *ppte=afff9e7f
> > [  279.293681] Internal error: : 1b [#1] PREEMPT SMP ARM
> > [  279.299001] Modules linked in: usbserial cdc_ether usbnet cdc_acm bnep bluetooth autofs4 usb_f_ecm g_ether usb_f_rndis u_ether libcomposite configfs ipv6 arc4 wl18xx wlcore mac80211 cfg80211 snd_soc_omap_hdmi_audio panel_boe_w677l omapdrm dwc3 drm_kms_helper cfbfillrect syscopyarea cfbimgblt sysfillrect sysimgblt fb_sys_fops cfbcopyarea drm encoder_tpd12s015 connector_hdmi w2cbw003_bluetooth snd_soc_omap_abe_twl6040 snd_soc_twl6040 wwan_on_off pwm_omap_dmtimer leds_gpio omapdss pwm_bl wlcore_sdio ehci_omap dwc3_omap snd_soc_ts3a225e leds_is31fl319x crtouch_mt tsc2007 bq27xxx_battery_i2c bq2429x_charger leds_tca6507 twl6040_vibra gpio_twl6040 ina2xx bq27xxx_battery palmas_gpadc palmas_pwrbutton as5013 bma150 tca8418_keypad bmg160_i2c usb3503 bmg160_core input_polldev bno055 snd_soc_omap_mcpdm snd_soc_omap_mcbsp snd_soc_omap snd_pcm_dmaengine
> > [  279.378264] CPU: 0 PID: 2833 Comm: cat Tainted: G        W       4.8.0-rc1-letux+ #661
> > [  279.386606] Hardware name: Generic OMAP5 (Flattened Device Tree)
> > [  279.392930] task: eda98e40 task.stack: eb16e000
> > [  279.397719] PC is at crtouch_read+0x10/0xfc [crtouch_mt]
> > [  279.403325] LR is at __vfs_read+0x20/0x104
> > [  279.407642] pc : [<bf089240>]    lr : [<c0252af0>]    psr: a00f0013
> > [  279.407642] sp : eb16fee8  ip : bf08b248  fp : 00020000
> > [  279.419727] r10: 00000000  r9 : eb16e000  r8 : c0107204
> > [  279.425233] r7 : eb16ff88  r6 : b6e33000  r5 : eb0275c0  r4 : b6e33000
> > [  279.432109] r3 : eb16ff88  r2 : 00020000  r1 : b6e33000  r0 : eb0275c0
> > [  279.438991] Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
> > [  279.446504] Control: 10c5387d  Table: ab6f406a  DAC: 00000051
> > [  279.452553] Process cat (pid: 2833, stack limit = 0xeb16e218)
> > [  279.458605] Stack: (0xeb16fee8 to 0xeb170000)
> > [  279.463204] fee0:                   eb0275c0 b6e33000 bf089230 eb0275c0 b6e33000 c0252af0
> > [  279.471820] ff00: b6f40510 00000001 00004201 c0101310 00000000 00000000 600f0013 eb0275c0
> > [  279.480432] ff20: 00020000 eb0275c8 eca4ad80 c0107204 eb16e000 00000000 00020000 c03bc468
> > [  279.489051] ff40: 00000000 00000000 00000000 00020000 eb0275c0 b6e33000 eb16ff88 c0253830
> > [  279.497663] ff60: eb0275c0 b6e33000 00020000 eb0275c0 eb0275c0 00020000 b6e33000 c0107204
> > [  279.506270] ff80: eb16e000 c0254484 00000000 00000000 00020000 00020000 00020000 b6e33000
> > [  279.514898] ffa0: 00000003 c0107060 00020000 00020000 00000003 b6e33000 00020000 000271c4
> > [  279.523517] ffc0: 00020000 00020000 b6e33000 00000003 7fffe000 00000000 00000000 00020000
> > [  279.532136] ffe0: 00000000 bed22b64 00013835 b6edefa6 400f0030 00000003 00000000 00000000
> > [  279.540795] [<bf089240>] (crtouch_read [crtouch_mt]) from [<c0252af0>] (__vfs_read+0x20/0x104)
> > [  279.549887] [<c0252af0>] (__vfs_read) from [<c0253830>] (vfs_read+0x94/0x100)
> > [  279.557416] [<c0253830>] (vfs_read) from [<c0254484>] (SyS_read+0x40/0x80)
> > [  279.564667] [<c0254484>] (SyS_read) from [<c0107060>] (ret_fast_syscall+0x0/0x1c)
> > [  279.572558] Code: e92d4073 e3510000 0a000021 e1a04001 (e5d11000) 
> > [  279.578988] ---[ end trace 95914bcb3c926ea7 ]---
> > 
> > Message from syslogd at localhost at Jan  1 01:02:40 ...
> >  kernel:[  279.293681] Internal error: : 1b [#1] PREEMPT SMP ARM
> > 
> > Message from syslogd at localhost at Jan  1 01:02:40 ...
> >  kernel:[  279.452553] Process cat (pid: 2833, stack limit = 0xeb16e218)
> > 
> > Message from syslogd at localhost at Jan  1 01:02:40 ...
> >  kernel:[  279.458605] Stack: (0xeb16fee8 to 0xeb170000)
> > 
> > Message from syslogd at localhost at Jan  1 01:02:40 ...
> >  kernel:[  279.463204] fee0:                   eb0275c0 b6e33000 bf089230 eb0275c0 b6e33000 c0252af0
> > 
> > Message from syslogd at localhost at Jan  1 01:02:40 ...
> >  kernel:[  279.471820] ff00: b6f40510 00000001 00004201 c0101310 00000000 00000000 600f0013 eb0275c0
> > 
> > Message from syslogd at localhost at Jan  1 01:02:40 ...
> >  kernel:[  279.480432] ff20: 00020000 eb0275c8 eca4ad80 c0107204 eb16e000 00000000 00020000 c03bc468
> > 
> > Message from syslogd at localhost at Jan  1 01:02:40 ...
> >  kernel:[  279.489051] ff40: 00000000 00000000 00000000 00020000 eb0275c0 b6e33000 eb16ff88 c0253830
> > 
> > Message from syslogd at localhost at Jan  1 01:02:40 ...
> >  kernel:[  279.497663] ff60: eb0275c0 b6e33000 00020000 eb0275c0 eb0275c0 00020000 b6e33000 c0107204
> > 
> > Message from syslogd at localhost at Jan  1 01:02:40 ...
> >  kernel:[  279.506270] ff80: eb16e000 c0254484 00000000 00000000 00020000 00020000 00020000 b6e33000
> > 
> > Message from syslogd at localhost at Jan  1 01:02:40 ...
> >  kernel:[  279.514898] ffa0: 00000003 c0107060 00020000 00020000 00000003 b6e33000 00020000 000271c4
> > 
> > Message from syslogd at localhost at Jan  1 01:02:40 ...
> >  kernel:[  279.523517] ffc0: 00020000 00020000 b6e33000 00000003 7fffe000 00000000 00000000 00020000
> > 
> > Message from syslogd at localhost at Jan  1 01:02:40 ...
> >  kernel:[  279.532136] ffe0: 00000000 bed22b64 00013835 b6edefa6 400f0030 00000003 00000000 00000000
> > 
> > Message from syslogd at localhost at Jan  1 01:02:40 ...
> >  kernel:[  279.572558] Code: e92d4073 e3510000 0a000021 e1a04001 (e5d11000) 
> > Segmentation fault
> > root at letux:/sys/class/crtouch_dev/crtouch_dev# 
> > 
> > And what we would need is an /dev/input/event driver.
> > 
> > --
> > Issue: http://projects.goldelico.com/p/gta04-kernel/issues/731/
> >

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