Re: omap DSS fails with tft410 driver panel?

[Javier Martinez Canillas <martinez.javier@gmail.com>]

On Tue, Dec 18, 2012 at 12:23 PM, Javier Martinez Canillas
<martinez.javier@gmail.com> wrote:
> On Tue, Dec 18, 2012 at 9:31 AM, Javier Martinez Canillas
> <martinez.javier@gmail.com> wrote:
>> On Thu, Nov 29, 2012 at 3:56 PM, Tomi Valkeinen <tomi.valkeinen@ti.com> wrote:
>>> On 2012-11-29 16:53, Steve Sakoman wrote:
>>>> On Thu, Nov 29, 2012 at 6:31 AM, Tomi Valkeinen <tomi.valkeinen@ti.com> wrote:
>>>>
>>>>>> It is stock Linux 3.6 (i.e. commit a0d271cbfed1dd50278c6b06bead3d00ba0a88f9)
>>>>>
>>>>> Still can't reproduce. So does the null pointer deref happen at boot
>>>>> time? What display related kernel boot options do you have? This looks
>>>>> funny, considering lcd43 is a bit smaller lcd:
>>>>
>>>> Yes, it happens at boot time.
>>>>
>>>> The boot options:
>>>>
>>>> [    0.000000] Kernel command line: console=ttyO2,115200n8 mpurate=500
>>>> vram=12M omapfb.mode=dvi:1024x768MR-16@60 omapdss.def_disp=lcd43
>>>> root=/dev/mmcblk0p2 rw rootfstype=ext3 rootwait
>>>
>>> Ok, now I see it. It happens because DVI is not configured to be used,
>>> but you have DVI video mode specified in the command line.
>>>
>>> I'll study this further and make a fix.
>>>
>>>  Tomi
>>>
>>>
>>>
>>
>> Hello folks,
>>
>> Did you find a solution for this?
>>
>> I still have the issue, when trying to start X I got:
>>
>> [   25.152160] OMAPFB: ioctl QUERY_PLANE
>> [   25.156066] OMAPFB: ioctl SETUP_PLANE
>> [   25.160095] OMAPFB: omapfb_setup_plane
>> [   25.164093] omapdss OVERLAY error: check_overlay: paddr cannot be 0
>> [   25.170684] omapdss OVERLAY error: check_overlay: paddr cannot be 0
>> [   25.177337] omapfb omapfb: setup_plane failed
>> [   25.181976] OMAPFB: ioctl failed: -22
>>
>> I'm using the arm-soc.git tree with the latest fixes and cleanups for
>> v3.8 sent by Tony yesterday and Xorg 1.13.
>>
>> The latest commit id is:
>>
>> commit aad05c3602ba5c42ff8d0e572b2f614f25779ede
>> Merge: eccf4b3 f64d204
>> Author: Olof Johansson <olof@lixom.net>
>> Date:   Mon Dec 17 18:44:26 2012 -0800
>>
>>     Merge branch 'late/omap-cleanup' into for-next
>>
>> I've CONFIG_OMAP2_DSS, CONFIG_FB_OMAP2 and CONFIG_PANEL_TFP410
>> built-in and this is my kernel command line is:
>>
>> console=ttyO2,115200n8 mpurate=auto vram=12M
>> omapfb.mode=dvi:1024x768MR-16@60 omapfb.debug=y omapdss.def_disp=dvi
>> root=/dev/mmcblk0p2 rw rootfstype=ext4 rootwait
>>
>> Also I have this log about a locking dependency:
>>
>> [   24.690795]
>> [   24.690826] ======================================================
>> [   24.690826] [ INFO: possible circular locking dependency detected ]
>> [   24.690826] 3.7.0-00017-g6c2ecfb-dirty #144 Not tainted
>> [   24.690826] -------------------------------------------------------
>> [   24.690826] Xorg/1259 is trying to acquire lock:
>> [   24.690887]  ((fb_notifier_list).rwsem){.+.+.+}, at: [<c0068708>]
>> __blocking_notifier_call_chain+0x30/0x60
>> [   24.690887]
>> [   24.690887] but task is already holding lock:
>> [   24.690917]  (console_lock){+.+.+.}, at: [<c02cec98>] do_fb_ioctl+0x200/0x5d8
>> [   24.690917]
>> [   24.690917] which lock already depends on the new lock.
>> [   24.690917]
>> [   24.690917]
>> [   24.690917] the existing dependency chain (in reverse order) is:
>> [   24.690948]
>> [   24.690948] -> #1 (console_lock){+.+.+.}:
>> [   24.690979]        [<c00902a4>] lock_acquire+0x9c/0x124
>> [   24.690979]        [<c0042b0c>] console_lock+0x50/0x64
>> [   24.691009]        [<c0320bd0>] register_con_driver+0x38/0x134
>> [   24.691009]        [<c03221a0>] take_over_console+0x18/0x44
>> [   24.691040]        [<c02d7674>] fbcon_takeover+0x64/0xc8
>> [   24.691070]        [<c04f4dd4>] notifier_call_chain+0x44/0x84
>> [   24.691070]        [<c0068720>] __blocking_notifier_call_chain+0x48/0x60
>> [   24.691070]        [<c0068750>] blocking_notifier_call_chain+0x18/0x20
>> [   24.691101]        [<c02cf654>] register_framebuffer+0x16c/0x23c
>> [   24.691131]        [<c04ee990>] omapfb_create_framebuffers+0x520/0x700
>> [   24.691131]        [<c0723480>] omapfb_probe+0x4e4/0x768
>> [   24.691162]        [<c03399f8>] platform_drv_probe+0x18/0x1c
>> [   24.691162]        [<c03387b4>] driver_probe_device+0x78/0x210
>> [   24.691192]        [<c03389e0>] __driver_attach+0x94/0x98
>> [   24.691192]        [<c03370b4>] bus_for_each_dev+0x50/0x7c
>> [   24.691223]        [<c0337fe0>] bus_add_driver+0x178/0x240
>> [   24.691223]        [<c0338eb0>] driver_register+0x78/0x144
>> [   24.691253]        [<c0339be8>] platform_driver_probe+0x18/0x9c
>> [   24.691253]        [<c0722f70>] omapfb_init+0x28/0x54
>> [   24.691284]        [<c00086a4>] do_one_initcall+0x34/0x178
>> [   24.691284]        [<c04e47ac>] kernel_init+0x100/0x2b4
>> [   24.691314]        [<c0013170>] ret_from_fork+0x14/0x24
>> [   24.691314]
>> [   24.691314] -> #0 ((fb_notifier_list).rwsem){.+.+.+}:
>> [   24.691345]        [<c008f85c>] __lock_acquire+0x15e4/0x1b00
>> [   24.691345]        [<c00902a4>] lock_acquire+0x9c/0x124
>> [   24.691375]        [<c04f0eb8>] down_read+0x2c/0x3c
>> [   24.691375]        [<c0068708>] __blocking_notifier_call_chain+0x30/0x60
>> [   24.691406]        [<c0068750>] blocking_notifier_call_chain+0x18/0x20
>> [   24.691406]        [<c02ce1c0>] fb_blank+0x34/0x98
>> [   24.691436]        [<c02cecb0>] do_fb_ioctl+0x218/0x5d8
>> [   24.691436]        [<c0114924>] do_vfs_ioctl+0x80/0x5f0
>> [   24.691467]        [<c0114f04>] sys_ioctl+0x70/0x78
>> [   24.691467]        [<c00130c0>] ret_fast_syscall+0x0/0x3c
>> [   24.691467]
>> [   24.691467] other info that might help us debug this:
>> [   24.691467]
>> [   24.691497]  Possible unsafe locking scenario:
>> [   24.691497]
>> [   24.691497]        CPU0                    CPU1
>> [   24.691497]        ----                    ----
>> [   24.691497]   lock(console_lock);
>> [   24.691497]                                lock((fb_notifier_list).rwsem);
>> [   24.691528]                                lock(console_lock);
>> [   24.691528]   lock((fb_notifier_list).rwsem);
>> [   24.691528]
>> [   24.691528]  *** DEADLOCK ***
>> [   24.691528]
>> [   24.691528] 2 locks held by Xorg/1259:
>> [   24.691558]  #0:  (&fb_info->lock){+.+.+.}, at: [<c02cdf9c>]
>> lock_fb_info+0x18/0x3c
>> [   24.691589]  #1:  (console_lock){+.+.+.}, at: [<c02cec98>]
>> do_fb_ioctl+0x200/0x5d8
>> [   24.691589]
>> [   24.691589] stack backtrace:
>> [   24.691619] [<c001ac2c>] (unwind_backtrace+0x0/0xf0) from
>> [<c04eb508>] (print_circular_bug+0x278/0x2c4)
>> [   24.691650] [<c04eb508>] (print_circular_bug+0x278/0x2c4) from
>> [<c008f85c>] (__lock_acquire+0x15e4/0x1b00)
>> [   24.691650] [<c008f85c>] (__lock_acquire+0x15e4/0x1b00) from
>> [<c00902a4>] (lock_acquire+0x9c/0x124)
>> [   24.691680] [<c00902a4>] (lock_acquire+0x9c/0x124) from
>> [<c04f0eb8>] (down_read+0x2c/0x3c)
>> [   24.691711] [<c04f0eb8>] (down_read+0x2c/0x3c) from [<c0068708>]
>> (__blocking_notifier_call_chain+0x30/0x60)
>> [   24.691711] [<c0068708>] (__blocking_notifier_call_chain+0x30/0x60)
>> from [<c0068750>] (blocking_notifier_call_chain+0x18/0x20)
>> [   24.691741] [<c0068750>] (blocking_notifier_call_chain+0x18/0x20)
>> from [<c02ce1c0>] (fb_blank+0x34/0x98)
>> [   24.691741] [<c02ce1c0>] (fb_blank+0x34/0x98) from [<c02cecb0>]
>> (do_fb_ioctl+0x218/0x5d8)
>> [   24.691772] [<c02cecb0>] (do_fb_ioctl+0x218/0x5d8) from
>> [<c0114924>] (do_vfs_ioctl+0x80/0x5f0)
>> [   24.691772] [<c0114924>] (do_vfs_ioctl+0x80/0x5f0) from
>> [<c0114f04>] (sys_ioctl+0x70/0x78)
>> [   24.691802] [<c0114f04>] (sys_ioctl+0x70/0x78) from [<c00130c0>]
>> (ret_fast_syscall+0x0/0x3c)
>>
>> I will look at this, but just wanted to ask first in case I missed
>> some patches that already fix this.
>>
>> My complete .config [1], dmesg [2] and xorg.conf [3].
>>
>> Thanks a lot and best regards,
>> Javier
>>
>> [1]: http://fpaste.org/DJgw/
>> [2]: http://fpaste.org/XEs5/
>> [3]: http://fpaste.org/dhWd/
>
> I've confirmed that this is the same issue that Steve had
> (dss_ovl_simple_check() failing due info->paddr == 0), so I tried his
> patch to force dss_ovl_simple_check() to always succeed. The second
> SETUP_PLANE ioctl doesn't fail anymore and I can see Xorg server is
> running.
>
> But still I don't have any output on the screen. Any hints will be appreciated.
>
> Here is my complete dmesg:
>
> [    0.000000] Booting Linux on physical CPU 0x0
> [    0.000000] Linux version 3.7.0-00017-g6c2ecfb-dirty (javier@munra)
> (gcc version 4.6.3 (crosstool-NG linaro-1.13.1+bzr2368 - Linaro GCC
> 2012.03) ) #155 SMP Tue Dec 18 12:14:19 CET 2012
> [    0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d
> [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing
> instruction cache
> [    0.000000] Machine: IGEP v2 board
> [    0.000000] Memory policy: ECC disabled, Data cache writeback
> [    0.000000] On node 0 totalpages: 130816
> [    0.000000] free_area_init_node: node 0, pgdat c07e09c0,
> node_mem_map c0d40000
> [    0.000000]   Normal zone: 1024 pages used for memmap
> [    0.000000]   Normal zone: 0 pages reserved
> [    0.000000]   Normal zone: 129792 pages, LIFO batch:31
> [    0.000000] OMAP3630 ES1.2 (l2cache iva sgx neon isp 192mhz_clk )
> [    0.000000] Clocking rate (Crystal/Core/MPU): 26.0/400/600 MHz
> [    0.000000] PERCPU: Embedded 9 pages/cpu @c1148000 s12992 r8192 d15680 u36864
> [    0.000000] pcpu-alloc: s12992 r8192 d15680 u36864 alloc=9*4096
> [    0.000000] pcpu-alloc: [0] 0
> [    0.000000] Built 1 zonelists in Zone order, mobility grouping on.
> Total pages: 129792
> [    0.000000] Kernel command line: console=ttyO2,115200n8
> mpurate=auto vram=12M omapfb.mode=dvi:1024x768MR-16@60 omapfb.debug=y
> omapdss.def_disp=dvi root=/dev/mmcblk0p2 rw rootfstype=ext4 rootwait
> [    0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
> [    0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
> [    0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
> [    0.000000] __ex_table already sorted, skipping sort
> [    0.000000] Memory: 511MB = 511MB total
> [    0.000000] Memory: 505132k/505132k available, 19156k reserved, 0K highmem
> [    0.000000] Virtual kernel memory layout:
> [    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
> [    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
> [    0.000000]     vmalloc : 0xe0800000 - 0xff000000   ( 488 MB)
> [    0.000000]     lowmem  : 0xc0000000 - 0xe0000000   ( 512 MB)
> [    0.000000]     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
> [    0.000000]     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
> [    0.000000]       .text : 0xc0008000 - 0xc06fc424   (7122 kB)
> [    0.000000]       .init : 0xc06fd000 - 0xc07512c0   ( 337 kB)
> [    0.000000]       .data : 0xc0752000 - 0xc07e3388   ( 581 kB)
> [    0.000000]        .bss : 0xc07e33ac - 0xc0d3fab0   (5490 kB)
> [    0.000000] Hierarchical RCU implementation.
> [    0.000000]  RCU restricting CPUs from NR_CPUS=2 to nr_cpu_ids=1.
> [    0.000000] NR_IRQS:16 nr_irqs:16 16
> [    0.000000] IRQ: Found an INTC at 0xfa200000 (revision 4.0) with 96
> interrupts
> [    0.000000] Total of 96 interrupts on 1 active controller
> [    0.000000] OMAP clockevent source: GPTIMER1 at 32768 Hz
> [    0.000000] sched_clock: 32 bits at 32kHz, resolution 30517ns,
> wraps every 131071999ms
> [    0.000000] OMAP clocksource: 32k_counter at 32768 Hz
> [    0.000000] Console: colour dummy device 80x30
> [    0.000000] Lock dependency validator: Copyright (c) 2006 Red Hat,
> Inc., Ingo Molnar
> [    0.000000] ... MAX_LOCKDEP_SUBCLASSES:  8
> [    0.000000] ... MAX_LOCK_DEPTH:          48
> [    0.000000] ... MAX_LOCKDEP_KEYS:        8191
> [    0.000000] ... CLASSHASH_SIZE:          4096
> [    0.000000] ... MAX_LOCKDEP_ENTRIES:     16384
> [    0.000000] ... MAX_LOCKDEP_CHAINS:      32768
> [    0.000000] ... CHAINHASH_SIZE:          16384
> [    0.000000]  memory used by lock dependency info: 3695 kB
> [    0.000000]  per task-struct memory footprint: 1152 bytes
> [    0.001007] Calibrating delay loop... 397.57 BogoMIPS (lpj=1554432)
> [    0.109374] pid_max: default: 32768 minimum: 301
> [    0.109954] Security Framework initialized
> [    0.110107] Mount-cache hash table entries: 512
> [    0.114685] CPU: Testing write buffer coherency: ok
> [    0.115509] CPU0: thread -1, cpu 0, socket -1, mpidr 0
> [    0.115570] Setting up static identity map for 0x804f8070 - 0x804f80e0
> [    0.118194] Brought up 1 CPUs
> [    0.118225] SMP: Total of 1 processors activated (397.57 BogoMIPS).
> [    0.121429] devtmpfs: initialized
> [    0.178405] pinctrl core: initialized pinctrl subsystem
> [    0.185058] regulator-dummy: no parameters
> [    0.187011] NET: Registered protocol family 16
> [    0.187896] DMA: preallocated 256 KiB pool for atomic coherent allocations
> [    0.189819] omap-gpmc omap-gpmc: GPMC revision 5.0
> [    0.200897] gpiochip_add: registered GPIOs 0 to 31 on device: gpio
> [    0.201385] OMAP GPIO hardware version 2.5
> [    0.203857] gpiochip_add: registered GPIOs 32 to 63 on device: gpio
> [    0.206451] gpiochip_add: registered GPIOs 64 to 95 on device: gpio
> [    0.208709] gpiochip_add: registered GPIOs 96 to 127 on device: gpio
> [    0.211242] gpiochip_add: registered GPIOs 128 to 159 on device: gpio
> [    0.213562] gpiochip_add: registered GPIOs 160 to 191 on device: gpio
> [    0.220794] omap_mux_init: Add partition: #1: core, flags: 4
> [    0.223358] IGEP2: Hardware Revision C (B-NON compatible)
> [    0.230804] _omap_mux_get_by_name: Could not find signal uart4_rx.uart4_rx
> [    0.239440] Reprogramming SDRC clock to 400000000 Hz
> [    0.240264] IGEP: initializing NAND memory device
> [    0.252227] hw-breakpoint: debug architecture 0x4 unsupported.
> [    0.267913]  omap-mcbsp.2: alias fck already exists
> [    0.268707]  omap-mcbsp.3: alias fck already exists
> [    0.272338] OMAP DMA hardware revision 5.0
> [    0.276702]  arm-pmu: alias fck already exists
> [    0.342346] bio: create slab <bio-0> at 0
> [    0.432434] omap-dma-engine omap-dma-engine: OMAP DMA engine driver
> [    0.433410] fixed-dummy: no parameters
> [    0.434448] vwlan: 3300 mV normal
> [    0.441284] SCSI subsystem initialized
> [    0.443695] usbcore: registered new interface driver usbfs
> [    0.444213] usbcore: registered new interface driver hub
> [    0.445007] usbcore: registered new device driver usb
> [    0.450622] omap_i2c omap_i2c.3: bus 3 rev1.4.0 at 100 kHz
> [    0.464324] twl 1-0048: PIH (irq 23) chaining IRQs 338..346
> [    0.464965] twl 1-0048: power (irq 343) chaining IRQs 346..353
> [    0.467926] twl4030_gpio twl4030_gpio: gpio (irq 338) chaining IRQs 354..371
> [    0.468353] gpiochip_find_base: found new base at 492
> [    0.469909] gpiochip_add: registered GPIOs 492 to 511 on device: twl4030
> [    0.480804] VIO: 1800 mV normal standby
> [    0.483184] vdd_mpu_iva: 600 <--> 1450 mV normal
> [    0.485565] vdd_core: 600 <--> 1450 mV normal
> [    0.487762] VMMC1: 1850 <--> 3150 mV at 3150 mV normal standby
> [    0.490661] VDVI: 1800 mV normal standby
> [    0.491485] omap_i2c omap_i2c.1: bus 1 rev1.4.0 at 2600 kHz
> [    0.499176] Switching to clocksource 32k_counter
> [    0.643341] NET: Registered protocol family 2
> [    0.645416] TCP established hash table entries: 4096 (order: 3, 32768 bytes)
> [    0.645721] TCP bind hash table entries: 4096 (order: 5, 147456 bytes)
> [    0.647979] TCP: Hash tables configured (established 4096 bind 4096)
> [    0.648681] TCP: reno registered
> [    0.648712] UDP hash table entries: 256 (order: 2, 20480 bytes)
> [    0.649047] UDP-Lite hash table entries: 256 (order: 2, 20480 bytes)
> [    0.650085] NET: Registered protocol family 1
> [    0.651397] RPC: Registered named UNIX socket transport module.
> [    0.651428] RPC: Registered udp transport module.
> [    0.651458] RPC: Registered tcp transport module.
> [    0.651458] RPC: Registered tcp NFSv4.1 backchannel transport module.
> [    0.652557] NetWinder Floating Point Emulator V0.97 (double precision)
> [    0.652893] CPU PMU: probing PMU on CPU 0
> [    0.652923] hw perfevents: enabled with ARMv7 Cortex-A8 PMU driver,
> 5 counters available
> [    0.842712] VFS: Disk quotas dquot_6.5.2
> [    0.843048] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
> [    0.846191] NFS: Registering the id_resolver key type
> [    0.846679] Key type id_resolver registered
> [    0.846710] Key type id_legacy registered
> [    0.846862] jffs2: version 2.2. (NAND) (SUMMARY)  © 2001-2006 Red Hat, Inc.
> [    0.847442] msgmni has been set to 986
> [    0.851013] io scheduler noop registered
> [    0.851043] io scheduler deadline registered
> [    0.851135] io scheduler cfq registered (default)
> [    0.855895] OMAP DSS rev 2.0
> [    0.888336] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
> [    0.896820] omap_uart.0: ttyO0 at MMIO 0x4806a000 (irq = 88) is a OMAP UART0
> [    0.899444] omap_uart.1: ttyO1 at MMIO 0x4806c000 (irq = 89) is a OMAP UART1
> [    0.901397] omap_uart.2: ttyO2 at MMIO 0x49020000 (irq = 90) is a OMAP UART2
> [    1.611419] console [ttyO2] enabled
> [    1.617340] omap_uart.3: ttyO3 at MMIO 0x49042000 (irq = 96) is a OMAP UART3
> [    1.662353] brd: module loaded
> [    1.687408] loop: module loaded
> [    1.698608] mtdoops: mtd device (mtddev=name/number) must be supplied
> [    1.706298] NAND device: Manufacturer ID: 0x2c, Chip ID: 0xbc
> (Micron NAND 512MiB 1,8V 16-bit), page size: 2048, OOB size: 64
> [    1.718414] Creating 5 MTD partitions on "omap2-nand.0":
> [    1.724029] 0x000000000000-0x000000080000 : "X-Loader"
> [    1.737426] 0x000000080000-0x000000200000 : "U-Boot"
> [    1.748809] 0x000000200000-0x000000280000 : "Environment"
> [    1.760040] 0x000000280000-0x000000580000 : "Kernel"
> [    1.772552] 0x000000580000-0x000020000000 : "File System"
> [    2.223999] OneNAND driver initializing
> [    2.238800] smsc911x: Driver version 2008-10-21
> [    2.251861] libphy: smsc911x-mdio: probed
> [    2.256439] smsc911x smsc911x.0 eth0: attached PHY driver [SMSC
> LAN8700] (mii_bus:phy_addr=smsc911x-0:01, irq=-1)
> [    2.268829] smsc911x smsc911x.0 eth0: MAC Address: 4e:5f:57:5d:d2:c5
> [    2.277496] usbcore: registered new interface driver asix
> [    2.283813] usbcore: registered new interface driver cdc_ether
> [    2.290618] usbcore: registered new interface driver smsc95xx
> [    2.297241] usbcore: registered new interface driver net1080
> [    2.303680] usbcore: registered new interface driver cdc_subset
> [    2.310485] usbcore: registered new interface driver zaurus
> [    2.316955] usbcore: registered new interface driver cdc_ncm
> [    2.325286] usbcore: registered new interface driver cdc_wdm
> [    2.331359] Initializing USB Mass Storage driver...
> [    2.337097] usbcore: registered new interface driver usb-storage
> [    2.343505] USB Mass Storage support registered.
> [    2.348937] usbcore: registered new interface driver usbtest
> [    2.357238] mousedev: PS/2 mouse device common for all mice
> [    2.365661] input: TWL4030 Keypad as
> /devices/platform/omap_i2c.1/i2c-1/1-004a/twl4030_keypad/input/input0
> [    2.384185] input: twl4030_pwrbutton as
> /devices/platform/omap_i2c.1/i2c-1/1-004b/twl4030_pwrbutton/input/input1
> [    2.397186] twl_rtc twl_rtc: Power up reset detected.
> [    2.404022] twl_rtc twl_rtc: Enabling TWL-RTC
> [    2.413330] twl_rtc twl_rtc: rtc core: registered twl_rtc as rtc0
> [    2.421386] i2c /dev entries driver
> [    2.428680] Driver for 1-wire Dallas network protocol.
> [    2.438079] omap_wdt: OMAP Watchdog Timer Rev 0x31: initial timeout 60 sec
> [    2.446624] twl4030_wdt twl4030_wdt: Failed to register misc device
> [    2.453460] twl4030_wdt: probe of twl4030_wdt failed with error -16
> [    2.463409] omap-dma-engine omap-dma-engine: allocating channel for 48
> [    2.470550] omap-dma-engine omap-dma-engine: allocating channel for 47
> [    2.525421] omap-dma-engine omap-dma-engine: allocating channel for 62
> [    2.532470] omap-dma-engine omap-dma-engine: allocating channel for 61
> [    2.569366] mmc0: new SDIO card at address 0001
> [    2.920196] usbcore: registered new interface driver usbhid
> [    2.926239] usbhid: USB HID core driver
> [    2.932037] oprofile: using arm/armv7
> [    2.936737] TCP: cubic registered
> [    2.940338] Initializing XFRM netlink socket
> [    2.945068] NET: Registered protocol family 17
> [    2.949859] NET: Registered protocol family 15
> [    2.955017] Key type dns_resolver registered
> [    2.959655] VFP support v0.3: implementor 41 architecture 3 part 30
> variant c rev 3
> [    2.978881] ThumbEE CPU extension supported.
> [    2.991058] OMAPFB: omapfb_init
> [    2.991302] OMAPFB: omapfb_probe
> [    2.994323] fbcvt: 1024x768@60: CVT Name - .786M3-R
> [    2.999938] OMAPFB: create 3 framebuffers
> [    2.999999] OMAPFB: fb_infos allocated
> [    2.999999] OMAPFB: allocating 1572864 bytes for fb 0
> [    3.002807] OMAPFB: allocated VRAM paddr 9f600000, vaddr e090c000
> [    3.002838] OMAPFB: region0 phys 9f600000 virt e090c000 size=1572864
> [    3.002868] OMAPFB: region1 phys 00000000 virt   (null) size=0
> [    3.002868] OMAPFB: region2 phys 00000000 virt   (null) size=0
> [    3.002868] OMAPFB: fbmems allocated
> [    3.003082] OMAPFB: check_fb_var 0
> [    3.003082] OMAPFB: max frame size 1572864, line size 2048
> [    3.003112] OMAPFB: xres = 1024, yres = 768, vxres = 1024, vyres = 768
> [    3.003143] OMAPFB: set_fb_fix
> [    3.005126] OMAPFB: fb_infos initialized
> [    3.010009] OMAPFB: set_par(0)
> [    3.010070] OMAPFB: set_fb_fix
> [    3.010070] OMAPFB: apply_changes, fb 0, ovl 0
> [    3.010131] OMAPFB: setup_overlay 0, posx 0, posy 0, outw 1024, outh 768
> [    3.010162] OMAPFB: paddr 9f600000
> [    3.010314] OMAPFB: pan_display(0)
> [    3.010314] OMAPFB: setcmap
> [    3.010345] OMAPFB: setcmap
> [    3.019195] Console: switching to colour frame buffer device 128x48
> [    3.019195] OMAPFB: pan_display(0)
> [    3.019195] OMAPFB: setcmap
> [    3.027313] OMAPFB: setcmap
> [    3.036560] OMAPFB: framebuffers registered
> [    3.036590] OMAPFB: apply_changes, fb 0, ovl 0
> [    3.036621] OMAPFB: setup_overlay 0, posx 0, posy 0, outw 1024, outh 768
> [    3.036621] OMAPFB: paddr 9f600000
> [    3.036682] OMAPFB: apply_changes, fb 1, ovl 1
> [    3.036743] OMAPFB: apply_changes, fb 2, ovl 2
> [    3.036834] OMAPFB: create_framebuffers done
> [    3.036865] OMAPFB: mgr->apply'ed
> [    3.039794] OMAPFB: create sysfs for fbs
> [    3.039825] OMAPFB: create sysfs for fbs
> [    3.041259] VDVI: incomplete constraints, leaving on
> [    3.051971] twl_rtc twl_rtc: setting system clock to 2000-01-01
> 00:00:00 UTC (946684800)
> [    3.065521] Waiting for root device /dev/mmcblk0p2...
> [    3.222808] mmc1: host does not support reading read-only switch.
> assuming write-enable.
> [    3.231597] mmc1: new SDHC card at address e624
> [    3.238830] mmcblk0: mmc1:e624 SU08G 7.40 GiB
> [    3.255645]  mmcblk0: p1 p2
> [    3.322967] EXT4-fs (mmcblk0p2): warning: maximal mount count
> reached, running e2fsck is recommended
> [    3.341094] EXT4-fs (mmcblk0p2): mounted filesystem with ordered
> data mode. Opts: (null)
> [    3.349884] VFS: Mounted root (ext4 filesystem) on device 179:2.
> [    3.381835] devtmpfs: mounted
> [    3.385833] Freeing init memory: 336K
> [    4.150543] OMAPFB: pan_display(0)
> [    4.150573] OMAPFB: setcmap
> [    4.150573] OMAPFB: setcmap
> [    4.161651] OMAPFB: user mmap region start 9f600000, len 1572864,
> off 9f600000
>>[    4.548126] udevd[780]: starting version 182
> [    7.068847] omap-twl4030 omap-twl4030: ASoC: CPU DAI omap-mcbsp.2
> not registered
> [    7.076965] omap-twl4030 omap-twl4030: snd_soc_register_card() failed: -517
> [    7.084411] platform omap-twl4030: Driver omap-twl4030 requests
> probe deferral
> [    7.171356] omap-twl4030 omap-twl4030: ASoC: CODEC twl4030-codec
> not registered
> [    7.179565] omap-twl4030 omap-twl4030: snd_soc_register_card() failed: -517
> [    7.186950] platform omap-twl4030: Driver omap-twl4030 requests
> probe deferral
> [    7.387695] lib80211: common routines for IEEE802.11 drivers
> [    7.394042] lib80211_crypt: registered algorithm 'NULL'
> [    7.551940] omap-twl4030 omap-twl4030: ASoC: CODEC twl4030-codec
> not registered
> [    7.560028] omap-twl4030 omap-twl4030: snd_soc_register_card() failed: -517
> [    7.567504] platform omap-twl4030: Driver omap-twl4030 requests
> probe deferral
> [    8.216064] cfg80211: Calling CRDA to update world regulatory domain
> [    8.364746] omap-twl4030 omap-twl4030:  twl4030-hifi <->
> omap-mcbsp.2 mapping ok
> [    8.573333] libertas_sdio: Libertas SDIO driver
> [    8.578369] libertas_sdio: Copyright Pierre Ossman
> [   11.256774] libertas_sdio: failed to find firmware (-2)
> [   12.367126] EXT4-fs (mmcblk0p2): re-mounted. Opts: data=ordered
> [   13.176910] smsc911x smsc911x.0 eth0: SMSC911x/921x identified at
> 0xe08c8000, IRQ: 290
> [   24.423065] OMAPFB: check_var(0)
> [   24.423156] OMAPFB: check_fb_var 0
> [   24.423187] OMAPFB: max frame size 1572864, line size 2048
> [   24.423187] OMAPFB: xres = 1024, yres = 768, vxres = 1024, vyres = 768
> [   24.423278] OMAPFB: set_par(0)
> [   24.423278] OMAPFB: set_fb_fix
> [   24.423278] OMAPFB: apply_changes, fb 0, ovl 0
> [   24.423339] OMAPFB: setup_overlay 0, posx 0, posy 0, outw 1024, outh 768
> [   24.423339] OMAPFB: paddr 9f600000
> [   24.423858] OMAPFB: pan_display(0)
> [   24.423858] OMAPFB: setcmap
> [   24.423950] OMAPFB: pan_display(0)
> [   24.423950] OMAPFB: setcmap
> [   24.423950] OMAPFB: setcmap
> [   24.433532] OMAPFB: setcmap
> [   24.436462] OMAPFB: ioctl GET_CAPS
> [   24.436676] OMAPFB: ioctl QUERY_MEM
> [   24.445281] OMAPFB: user mmap region start 9f600000, len 1572864,
> off 9f600000
> [   24.547180] OMAPFB: ioctl QUERY_PLANE
> [   24.547302] OMAPFB: ioctl SETUP_PLANE
> [   24.547302] OMAPFB: omapfb_setup_plane
> [   24.547424] OMAPFB: setup_overlay 0, posx 0, posy 0, outw 1024, outh 768
> [   24.547424] OMAPFB: paddr 9f600000
> [   24.547790]
> [   24.547790] ======================================================
> [   24.547790] [ INFO: possible circular locking dependency detected ]
> [   24.547821] 3.7.0-00017-g6c2ecfb-dirty #155 Not tainted
> [   24.547821] -------------------------------------------------------
> [   24.547821] Xorg/1277 is trying to acquire lock:
> [   24.547882]  ((fb_notifier_list).rwsem){.+.+.+}, at: [<c0068708>]
> __blocking_notifier_call_chain+0x30/0x60
> [   24.547882]
> [   24.547882] but task is already holding lock:
> [   24.547912]  (console_lock){+.+.+.}, at: [<c02cec98>] do_fb_ioctl+0x200/0x5d8
> [   24.547912]
> [   24.547912] which lock already depends on the new lock.
> [   24.547912]
> [   24.547912]
> [   24.547912] the existing dependency chain (in reverse order) is:
> [   24.547943]
> [   24.547943] -> #1 (console_lock){+.+.+.}:
> [   24.547943]        [<c00902a4>] lock_acquire+0x9c/0x124
> [   24.547973]        [<c0042b0c>] console_lock+0x50/0x64
> [   24.548004]        [<c0320bcc>] register_con_driver+0x38/0x134
> [   24.548004]        [<c032219c>] take_over_console+0x18/0x44
> [   24.548034]        [<c02d7674>] fbcon_takeover+0x64/0xc8
> [   24.548034]        [<c04f4dd4>] notifier_call_chain+0x44/0x84
> [   24.548065]        [<c0068720>] __blocking_notifier_call_chain+0x48/0x60
> [   24.548065]        [<c0068750>] blocking_notifier_call_chain+0x18/0x20
> [   24.548095]        [<c02cf654>] register_framebuffer+0x16c/0x23c
> [   24.548095]        [<c04ee990>] omapfb_create_framebuffers+0x520/0x700
> [   24.548126]        [<c0723480>] omapfb_probe+0x4e4/0x768
> [   24.548126]        [<c03399f4>] platform_drv_probe+0x18/0x1c
> [   24.548156]        [<c03387b0>] driver_probe_device+0x78/0x210
> [   24.548187]        [<c03389dc>] __driver_attach+0x94/0x98
> [   24.548187]        [<c03370b0>] bus_for_each_dev+0x50/0x7c
> [   24.548187]        [<c0337fdc>] bus_add_driver+0x178/0x240
> [   24.548217]        [<c0338eac>] driver_register+0x78/0x144
> [   24.548217]        [<c0339be4>] platform_driver_probe+0x18/0x9c
> [   24.548248]        [<c0722f70>] omapfb_init+0x28/0x54
> [   24.548248]        [<c00086a4>] do_one_initcall+0x34/0x178
> [   24.548278]        [<c04e47a8>] kernel_init+0x100/0x2b4
> [   24.548309]        [<c0013170>] ret_from_fork+0x14/0x24
> [   24.548309]
> [   24.548309] -> #0 ((fb_notifier_list).rwsem){.+.+.+}:
> [   24.548339]        [<c008f85c>] __lock_acquire+0x15e4/0x1b00
> [   24.548339]        [<c00902a4>] lock_acquire+0x9c/0x124
> [   24.548370]        [<c04f0eb8>] down_read+0x2c/0x3c
> [   24.548370]        [<c0068708>] __blocking_notifier_call_chain+0x30/0x60
> [   24.548370]        [<c0068750>] blocking_notifier_call_chain+0x18/0x20
> [   24.548400]        [<c02ce1c0>] fb_blank+0x34/0x98
> [   24.548400]        [<c02cecb0>] do_fb_ioctl+0x218/0x5d8
> [   24.548431]        [<c0114924>] do_vfs_ioctl+0x80/0x5f0
> [   24.548431]        [<c0114f04>] sys_ioctl+0x70/0x78
> [   24.548461]        [<c00130c0>] ret_fast_syscall+0x0/0x3c
> [   24.548461]
> [   24.548461] other info that might help us debug this:
> [   24.548461]
> [   24.548461]  Possible unsafe locking scenario:
> [   24.548461]
> [   24.548461]        CPU0                    CPU1
> [   24.548461]        ----                    ----
> [   24.548492]   lock(console_lock);
> [   24.548492]                                lock((fb_notifier_list).rwsem);
> [   24.548492]                                lock(console_lock);
> [   24.548522]   lock((fb_notifier_list).rwsem);
> [   24.548522]
> [   24.548522]  *** DEADLOCK ***
> [   24.548522]
> [   24.548522] 2 locks held by Xorg/1277:
> [   24.548553]  #0:  (&fb_info->lock){+.+.+.}, at: [<c02cdf9c>]
> lock_fb_info+0x18/0x3c
> [   24.548583]  #1:  (console_lock){+.+.+.}, at: [<c02cec98>]
> do_fb_ioctl+0x200/0x5d8
> [   24.548583]
> [   24.548583] stack backtrace:
> [   24.548614] [<c001ac2c>] (unwind_backtrace+0x0/0xf0) from
> [<c04eb508>] (print_circular_bug+0x278/0x2c4)
> [   24.548614] [<c04eb508>] (print_circular_bug+0x278/0x2c4) from
> [<c008f85c>] (__lock_acquire+0x15e4/0x1b00)
> [   24.548645] [<c008f85c>] (__lock_acquire+0x15e4/0x1b00) from
> [<c00902a4>] (lock_acquire+0x9c/0x124)
> [   24.548675] [<c00902a4>] (lock_acquire+0x9c/0x124) from
> [<c04f0eb8>] (down_read+0x2c/0x3c)
> [   24.548675] [<c04f0eb8>] (down_read+0x2c/0x3c) from [<c0068708>]
> (__blocking_notifier_call_chain+0x30/0x60)
> [   24.548706] [<c0068708>] (__blocking_notifier_call_chain+0x30/0x60)
> from [<c0068750>] (blocking_notifier_call_chain+0x18/0x20)
> [   24.548706] [<c0068750>] (blocking_notifier_call_chain+0x18/0x20)
> from [<c02ce1c0>] (fb_blank+0x34/0x98)
> [   24.548736] [<c02ce1c0>] (fb_blank+0x34/0x98) from [<c02cecb0>]
> (do_fb_ioctl+0x218/0x5d8)
> [   24.548736] [<c02cecb0>] (do_fb_ioctl+0x218/0x5d8) from
> [<c0114924>] (do_vfs_ioctl+0x80/0x5f0)
> [   24.548767] [<c0114924>] (do_vfs_ioctl+0x80/0x5f0) from
> [<c0114f04>] (sys_ioctl+0x70/0x78)
> [   24.548797] [<c0114f04>] (sys_ioctl+0x70/0x78) from [<c00130c0>]
> (ret_fast_syscall+0x0/0x3c)
> [   25.008056] OMAPFB: ioctl QUERY_PLANE
> [   25.011962] OMAPFB: ioctl SETUP_PLANE
> [   25.015930] OMAPFB: omapfb_setup_plane
> [   25.019897] omapdss OVERLAY error: check_overlay: paddr cannot be 0
> [   25.026580] omapdss OVERLAY error: check_overlay: overlay 2 doesn't
> support mode 0
> [   25.034576] omapdss OVERLAY error: check_overlay: rotation type 0
> not supported
> [   25.044525] OMAPFB: ioctl QUERY_MEM
> [   25.048339] OMAPFB: ioctl QUERY_PLANE
> [   25.052215] OMAPFB: ioctl GET_CAPS

Hi,

I've tested with the latest stable kernel (Linux 3.7.1) and the video
output is working correctly with the same user-space components.
The complete dmesg is here: http://fpaste.org/1Kv4/

Looking at the logs for both kernels I realized that there are two
differences main between the working (3.7.1) and non-working
(mainline) kernel (besides the versions of course):

a) The number of framebuffers created (working 1, non working 3)
b) The omapfb now uses dma_alloc_attrs to allocate memory instead of
the now removed OMAP-specific omap_vram_alloc

For a) I built mainline with CONFIG_FB_OMAP2_NUM_FBS=1 and that made
the error about the overlay paddr being zero disappear (OVERLAY error:
check_overlay: paddr cannot be 0) but still no video on the screen.

Conversely I build 3.7.1 with CONFIG_FB_OMAP2_NUM_FBS=3 and even
though I had the paddr can't be zero error, video is working
correctly. So it seems that error shouldn't affect the video display.

For b) I tried to built mainline with CONFIG_CMA=y but it didn't work either.

Thanks a lot and best regards,
Javier
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html