Re: drm-radeon-testing commit 8131660130d3dc2629a150d47e6a04c8a1a6244b breaks LVDS on my PowerBook
2010/2/10 Michel Dänzer mic...@daenzer.net:
On Wed, 2010-01-27 at 11:52 -0500, Alex Deucher wrote:
2010/1/27 Michel Dänzer mic...@daenzer.net:
On Wed, 2010-01-27 at 10:30 -0500, Alex Deucher wrote:
2010/1/27 Michel Dänzer mic...@daenzer.net:
your commit 8131660130d3dc2629a150d47e6a04c8a1a6244b ('drm/radeon/kms:
add support for hw i2c on r1xx-r5xx') breaks LVDS on my PowerBook. It
looks kinda like blooming, though I can actually make out a higly
distorted part of what it's supposed to display, and there's a
panel/backlight blinking around every second or so.
Hmm, maybe the mac's edid is wired up such that hw i2c doesn't work or
the prescale calculation for your system needs adjusting. Switching
back to sw i2c should fix it in the meantime. Set the hw_capable bool
in the radeon_i2c_bus_rec struct to false.
Presumably that would work, as the previous commit ('drm/radeon/kms: add
radeon i2c algo') works? [0]
For the prescale:
u32 prescale = (((rdev-clock.default_sclk * 10)/(4 * 128 * 100) + 1)
8) + 128;
does rdev-clock.default_sclk get initialized properly on the mac? If
not, you can use radeon_get_engine_clock to read back the value from
the regs.
Looks like it in /sys/kernel/debug/dri/0/radeon_pm_info:
state: PM_STATE_DISABLED
default engine clock: 445500 kHz
current engine clock: 445500 kHz
default memory clock: 240750 kHz
current memory clock: 240750 kHz
you could also try the prescale algo from r520:
i2c_clock = 50;
prescale = (127 8) + ((rdev-clock.default_sclk * 10) / (4 * 127 *
i2c_clock));
Sorry I didn't have time to try your suggestions. However, I'm happy to
report that this problem is fixed in current drm-radeon-testing.
excellent. I think it was the prescale calculation:
e6346ab00d9138f0303d79b3638bbc143266186e
Alex
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drm-radeon-testing commit 8131660130d3dc2629a150d47e6a04c8a1a6244b breaks LVDS on my PowerBook
Hi Alex,
your commit 8131660130d3dc2629a150d47e6a04c8a1a6244b ('drm/radeon/kms:
add support for hw i2c on r1xx-r5xx') breaks LVDS on my PowerBook. It
looks kinda like blooming, though I can actually make out a higly
distorted part of what it's supposed to display, and there's a
panel/backlight blinking around every second or so.
These errors from dmesg might be relevant (nothing's connected to the
DVI connector):
[0.355445] [drm] Radeon Display Connectors
[0.355473] [drm] Connector 0:
[0.355490] [drm] LVDS
[0.355509] [drm] DDC: 0x64 0x64 0x64 0x64 0x64 0x64 0x64 0x64
[0.355533] [drm] Encoders:
[0.30] [drm] LCD1: INTERNAL_LVDS
[0.355570] [drm] Connector 1:
[0.355587] [drm] DVI-I
[0.355602] [drm] HPD2
[0.355620] [drm] DDC: 0x60 0x60 0x60 0x60 0x60 0x60 0x60 0x60
[0.355645] [drm] Encoders:
[0.355661] [drm] DFP2: INTERNAL_DVO1
[0.355681] [drm] CRT1: INTERNAL_DAC1
[0.355700] [drm] Connector 2:
[0.355716] [drm] S-video
[0.355732] [drm] Encoders:
[0.355748] [drm] TV1: INTERNAL_DAC2
[0.591623] [drm:edid_is_valid] *ERROR* Raw EDID:
[0.591652] 3a1 ff bf bf fd ff ff ff ff ff ff ff fd ff ff ff
[0.591661] 3ff ff ff ff ff ef a1 ff ff ff a1 7f ff ff a1 ff
[0.591669] 3fb ff a1 ff ff ff a1 ff ff ff a1 fe ff ff a1 ff
[0.591678] 3f7 ff ff ff ff ff ff ff ff bf bf ff ff ff ff fd
[0.591686] 3ff ff ff ff ef ff ff ff ff a1 ff ff ff a1 ff fb
[0.591695] 3ff a1 ff ff ff a1 ff ff ff a1 fe ff ff a1 ff ff
[0.591704] 3ff ff ff f7 ff ff ff ff bf bf ff ff ff ff fd ff
[0.591726] 3ff ff ff ef ff ff ff ef a1 ff ff ff a1 7f fb ff
[0.591733]
[0.634535] [drm:edid_is_valid] *ERROR* Raw EDID:
[0.634559] 3a1 ff ff ff fd ff ff ff fd ff ff ff ff ef a1 ff
[0.634568] 3ff ff a1 7f ff ff a1 ff fb ff a1 ff ff ff a1 ff
[0.634576] 3ff df a1 fe ff ff a1 ff ff ff ff ff 08 ff ff ff
[0.634585] 3ff bf bf ff ff 00 00 04 10 4e 4e 9c 00 00 00 00
.NN.
[0.634594] 310 a1 0e 0f 01 a1 83 80 20 a1 16 7c 0a a1 87 f5
..|
[0.634602] 394 a1 57 4f 8c a1 26 27 50 a1 54 00 00 00 00 01
..WO..'P.T.
[0.634611] 301 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
[0.634620] 3a1 01 01 01 a1 b8 28 a0 a1 40 51 c0 a1 10 30 40
..(@q...0@
[0.634627]
[0.676987] [drm:edid_is_valid] *ERROR* Raw EDID:
[0.677010] 3a1 89 ff a1 ff ff ff a1 7f fb ff a1 ff ff ff a1
[0.677019] 3ff ff ff a1 fe ff ff a1 ff ff ff ff ff ff ff ff
[0.677028] 3ff ff bf bf ff ff ff ff fd ff ff ff ff ef ff ff
[0.677036] 3ff ff a1 7f ff ff a1 7f fb ff a1 ff ff ff a1 ff
[0.677045] 3ff df a1 fe ff ff a1 ff ff ff ff ff f7 ff ff ff
[0.677054] 3ff bf bf ff ff ff ff fd ff ff ff ff ff ff ff ff
[0.677062] 3ef a1 ff ff ff a1 7f ff ff a1 ff fb ff a1 ff ff
[0.677071] 3ff a1 ff ff ff a1 fe ff ff a1 ff f7 ff ff ff ff
[0.677078]
[0.719430] [drm:edid_is_valid] *ERROR* Raw EDID:
[0.719453] 3a1 ff df a1 ff ff df a1 fe ff ff a1 ff ff ff ff
[0.719462] 3ff ff ff ff ff ff bf bf ff ff ff ff fd ff ff ff
[0.719471] 3ff ef ff ff ff ff a1 ff ff ff a1 ff fb ff a1 ff
[0.719479] 3ff ff a1 ff ff ff a1 fe ff ff a1 ff ff ff ff ff
[0.719488] 3f7 ff ff ff ff bf bf ff ff ff ff fd ff ff ff ff
[0.719497] 3ef ff ff ff ff a1 ff ff ff a1 7f fb ff a1 ff ff
[0.719505] 3ff a1 ff ff df a1 ff ff ff a1 fe ff ff a1 ff f7
[0.719514] 3ff ff ff ff ff ff ff ff bf bf fd ff ff ff fd ff
[0.719521]
[0.761872] [drm:edid_is_valid] *ERROR* Raw EDID:
[0.761895] 3a1 ff ff bf bf ff ff ff ff fd ff ff ff ff ef ff
[0.761904] 3ff ff ff a1 ff ff ff a1 ff ff ff a1 ff ff ff a1
[0.761912] 3ff ff df a1 fe ff ff a1 ff ff ff ff ff f7 ff ff
[0.761921] 3ff ff bf bf ff ff ff ff fd ff ff ff ff ef ff ff
[0.761930] 3ff ff a1 ff ff ff a1 7f ff ff a1 ff ff ff a1 ff
[0.761938] 3ff df a1 ff ff ff a1 fe ff ff a1 ff f7 ff ff ff
[0.761947] 3ff bf bf ff ff bf bf fd ff ff ff ff ff ff ff ff
[0.761956] 3ef a1 ff ff ff a1 7f ff ff a1 ff fb ff a1 ff ff
[0.761963]
[0.761977] radeon :00:10.0: LVDS-1: EDID invalid.
[0.762960] [drm:radeon_dvi_detect] *ERROR* DVI-I-1: probed a monitor but
no|invalid EDID
--
Earthling Michel Dänzer |http://www.vmware.com
Re: drm-radeon-testing commit 8131660130d3dc2629a150d47e6a04c8a1a6244b breaks LVDS on my PowerBook
2010/1/27 Michel Dänzer mic...@daenzer.net:
Hi Alex,
your commit 8131660130d3dc2629a150d47e6a04c8a1a6244b ('drm/radeon/kms:
add support for hw i2c on r1xx-r5xx') breaks LVDS on my PowerBook. It
looks kinda like blooming, though I can actually make out a higly
distorted part of what it's supposed to display, and there's a
panel/backlight blinking around every second or so.
Hmm, maybe the mac's edid is wired up such that hw i2c doesn't work or
the prescale calculation for your system needs adjusting. Switching
back to sw i2c should fix it in the meantime. Set the hw_capable bool
in the radeon_i2c_bus_rec struct to false. For the prescale:
u32 prescale = (((rdev-clock.default_sclk * 10)/(4 * 128 * 100) + 1)
8) + 128;
does rdev-clock.default_sclk get initialized properly on the mac? If
not, you can use radeon_get_engine_clock to read back the value from
the regs.
Alex
These errors from dmesg might be relevant (nothing's connected to the
DVI connector):
[ 0.355445] [drm] Radeon Display Connectors
[ 0.355473] [drm] Connector 0:
[ 0.355490] [drm] LVDS
[ 0.355509] [drm] DDC: 0x64 0x64 0x64 0x64 0x64 0x64 0x64 0x64
[ 0.355533] [drm] Encoders:
[ 0.30] [drm] LCD1: INTERNAL_LVDS
[ 0.355570] [drm] Connector 1:
[ 0.355587] [drm] DVI-I
[ 0.355602] [drm] HPD2
[ 0.355620] [drm] DDC: 0x60 0x60 0x60 0x60 0x60 0x60 0x60 0x60
[ 0.355645] [drm] Encoders:
[ 0.355661] [drm] DFP2: INTERNAL_DVO1
[ 0.355681] [drm] CRT1: INTERNAL_DAC1
[ 0.355700] [drm] Connector 2:
[ 0.355716] [drm] S-video
[ 0.355732] [drm] Encoders:
[ 0.355748] [drm] TV1: INTERNAL_DAC2
[ 0.591623] [drm:edid_is_valid] *ERROR* Raw EDID:
[ 0.591652] 3a1 ff bf bf fd ff ff ff ff ff ff ff fd ff ff ff
[ 0.591661] 3ff ff ff ff ff ef a1 ff ff ff a1 7f ff ff a1 ff
[ 0.591669] 3fb ff a1 ff ff ff a1 ff ff ff a1 fe ff ff a1 ff
[ 0.591678] 3f7 ff ff ff ff ff ff ff ff bf bf ff ff ff ff fd
[ 0.591686] 3ff ff ff ff ef ff ff ff ff a1 ff ff ff a1 ff fb
[ 0.591695] 3ff a1 ff ff ff a1 ff ff ff a1 fe ff ff a1 ff ff
[ 0.591704] 3ff ff ff f7 ff ff ff ff bf bf ff ff ff ff fd ff
[ 0.591726] 3ff ff ff ef ff ff ff ef a1 ff ff ff a1 7f fb ff
[ 0.591733]
[ 0.634535] [drm:edid_is_valid] *ERROR* Raw EDID:
[ 0.634559] 3a1 ff ff ff fd ff ff ff fd ff ff ff ff ef a1 ff
[ 0.634568] 3ff ff a1 7f ff ff a1 ff fb ff a1 ff ff ff a1 ff
[ 0.634576] 3ff df a1 fe ff ff a1 ff ff ff ff ff 08 ff ff ff
[ 0.634585] 3ff bf bf ff ff 00 00 04 10 4e 4e 9c 00 00 00 00
.NN.
[ 0.634594] 310 a1 0e 0f 01 a1 83 80 20 a1 16 7c 0a a1 87 f5
..|
[ 0.634602] 394 a1 57 4f 8c a1 26 27 50 a1 54 00 00 00 00 01
..WO..'P.T.
[ 0.634611] 301 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
[ 0.634620] 3a1 01 01 01 a1 b8 28 a0 a1 40 51 c0 a1 10 30 40
..(@q...0@
[ 0.634627]
[ 0.676987] [drm:edid_is_valid] *ERROR* Raw EDID:
[ 0.677010] 3a1 89 ff a1 ff ff ff a1 7f fb ff a1 ff ff ff a1
[ 0.677019] 3ff ff ff a1 fe ff ff a1 ff ff ff ff ff ff ff ff
[ 0.677028] 3ff ff bf bf ff ff ff ff fd ff ff ff ff ef ff ff
[ 0.677036] 3ff ff a1 7f ff ff a1 7f fb ff a1 ff ff ff a1 ff
[ 0.677045] 3ff df a1 fe ff ff a1 ff ff ff ff ff f7 ff ff ff
[ 0.677054] 3ff bf bf ff ff ff ff fd ff ff ff ff ff ff ff ff
[ 0.677062] 3ef a1 ff ff ff a1 7f ff ff a1 ff fb ff a1 ff ff
[ 0.677071] 3ff a1 ff ff ff a1 fe ff ff a1 ff f7 ff ff ff ff
[ 0.677078]
[ 0.719430] [drm:edid_is_valid] *ERROR* Raw EDID:
[ 0.719453] 3a1 ff df a1 ff ff df a1 fe ff ff a1 ff ff ff ff
[ 0.719462] 3ff ff ff ff ff ff bf bf ff ff ff ff fd ff ff ff
[ 0.719471] 3ff ef ff ff ff ff a1 ff ff ff a1 ff fb ff a1 ff
[ 0.719479] 3ff ff a1 ff ff ff a1 fe ff ff a1 ff ff ff ff ff
[ 0.719488] 3f7 ff ff ff ff bf bf ff ff ff ff fd ff ff ff ff
[ 0.719497] 3ef ff ff ff ff a1 ff ff ff a1 7f fb ff a1 ff ff
[ 0.719505] 3ff a1 ff ff df a1 ff ff ff a1 fe ff ff a1 ff f7
[ 0.719514] 3ff ff ff ff ff ff ff ff bf bf fd ff ff ff fd ff
[ 0.719521]
[ 0.761872] [drm:edid_is_valid] *ERROR* Raw EDID:
[ 0.761895] 3a1 ff ff bf bf ff ff ff ff fd ff ff ff ff ef ff
[ 0.761904] 3ff ff ff a1 ff ff ff a1 ff ff ff a1 ff ff ff a1
[ 0.761912] 3ff ff df a1 fe ff ff a1 ff ff ff ff ff f7 ff ff
[
Re: drm-radeon-testing commit 8131660130d3dc2629a150d47e6a04c8a1a6244b breaks LVDS on my PowerBook
On Wed, 2010-01-27 at 10:30 -0500, Alex Deucher wrote:
2010/1/27 Michel Dänzer mic...@daenzer.net:
your commit 8131660130d3dc2629a150d47e6a04c8a1a6244b ('drm/radeon/kms:
add support for hw i2c on r1xx-r5xx') breaks LVDS on my PowerBook. It
looks kinda like blooming, though I can actually make out a higly
distorted part of what it's supposed to display, and there's a
panel/backlight blinking around every second or so.
Hmm, maybe the mac's edid is wired up such that hw i2c doesn't work or
the prescale calculation for your system needs adjusting. Switching
back to sw i2c should fix it in the meantime. Set the hw_capable bool
in the radeon_i2c_bus_rec struct to false.
Presumably that would work, as the previous commit ('drm/radeon/kms: add
radeon i2c algo') works? [0]
For the prescale:
u32 prescale = (((rdev-clock.default_sclk * 10)/(4 * 128 * 100) + 1)
8) + 128;
does rdev-clock.default_sclk get initialized properly on the mac? If
not, you can use radeon_get_engine_clock to read back the value from
the regs.
Looks like it in /sys/kernel/debug/dri/0/radeon_pm_info:
state: PM_STATE_DISABLED
default engine clock: 445500 kHz
current engine clock: 445500 kHz
default memory clock: 240750 kHz
current memory clock: 240750 kHz
[0] Though actually I notice there's a warning in dmesg with that as
well:
[0.355965] [drm] TV1: INTERNAL_DAC2
[0.356037]
[0.356040] =
[0.356072] [ INFO: possible recursive locking detected ]
[0.356096] 2.6.32.6 #434
[0.356112] -
[0.356136] swapper/1 is trying to acquire lock:
[0.356158] (adap-bus_lock){+.+...}, at: [c0355910]
i2c_transfer+0x84/0x178
[0.356219]
[0.356221] but task is already holding lock:
[0.356249] (adap-bus_lock){+.+...}, at: [c0355910]
i2c_transfer+0x84/0x178
[0.356294]
[0.356296] other info that might help us debug this:
[0.356328] 1 lock held by swapper/1:
[0.356346] #0: (adap-bus_lock){+.+...}, at: [c0355910]
i2c_transfer+0x84/0x178
[0.356396]
[0.356397] stack backtrace:
[0.356422] Call Trace:
[0.356447] [ef871b50] [c00094fc] show_stack+0x7c/0x194 (unreliable)
[0.356485] [ef871b90] [c007ebe4] __lock_acquire+0x15c0/0x16a8
[0.356515] [ef871c20] [c007edb8] lock_acquire+0xec/0x128
[0.356549] [ef871c60] [c040bfa4] mutex_lock_nested+0x5c/0x2c8
[0.356580] [ef871cc0] [c0355910] i2c_transfer+0x84/0x178
[0.356612] [ef871cf0] [c02aa56c] radeon_i2c_xfer+0x44/0x80
[0.356643] [ef871d10] [c0355938] i2c_transfer+0xac/0x178
[0.356679] [ef871d40] [c026267c] drm_do_probe_ddc_edid+0x50/0x70
[0.356710] [ef871d70] [c02626e0] drm_ddc_read_edid+0x44/0xd8
[0.356741] [ef871d90] [c026285c] drm_get_edid+0xe8/0x1a0
[0.356770] [ef871db0] [c02a7b10] radeon_modeset_init+0x690/0x794
[0.356802] [ef871e10] [c028a964] radeon_driver_load_kms+0x150/0x1b0
[0.356841] [ef871e30] [c0257c8c] drm_get_dev+0x36c/0x45c
[0.356875] [ef871e60] [c0412180] radeon_pci_probe+0x1c/0x2c
[0.356912] [ef871e70] [c020c93c] local_pci_probe+0x24/0x34
[0.356943] [ef871e80] [c020dc78] pci_device_probe+0x70/0xb0
[0.356977] [ef871eb0] [c02f3e24] driver_probe_device+0x13c/0x2a8
[0.357008] [ef871ed0] [c02f4008] __driver_attach+0x78/0xb4
[0.357038] [ef871ef0] [c02f3218] bus_for_each_dev+0x68/0xc0
[0.357067] [ef871f20] [c02f3ad4] driver_attach+0x24/0x34
[0.357097] [ef871f30] [c02f2918] bus_add_driver+0x15c/0x324
[0.357127] [ef871f50] [c02f442c] driver_register+0xcc/0x184
[0.357158] [ef871f70] [c020df78] __pci_register_driver+0x74/0x108
[0.357190] [ef871f90] [c0252024] drm_init+0x74/0x108
[0.357224] [ef871fb0] [c05c3794] radeon_init+0xa4/0xb8
[0.357254] [ef871fc0] [c0003eec] do_one_initcall+0x70/0x210
[0.357289] [ef871fe0] [c05a21dc] kernel_init+0xbc/0x130
[0.357318] [ef871ff0] [c0014120] kernel_thread+0x4c/0x68
[0.651929] [drm] Determined LVDS native mode details from EDID
--
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Libre software enthusiast | Debian, X and DRI developer
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Re: drm-radeon-testing commit 8131660130d3dc2629a150d47e6a04c8a1a6244b breaks LVDS on my PowerBook
2010/1/27 Michel Dänzer mic...@daenzer.net:
On Wed, 2010-01-27 at 10:30 -0500, Alex Deucher wrote:
2010/1/27 Michel Dänzer mic...@daenzer.net:
your commit 8131660130d3dc2629a150d47e6a04c8a1a6244b ('drm/radeon/kms:
add support for hw i2c on r1xx-r5xx') breaks LVDS on my PowerBook. It
looks kinda like blooming, though I can actually make out a higly
distorted part of what it's supposed to display, and there's a
panel/backlight blinking around every second or so.
Hmm, maybe the mac's edid is wired up such that hw i2c doesn't work or
the prescale calculation for your system needs adjusting. Switching
back to sw i2c should fix it in the meantime. Set the hw_capable bool
in the radeon_i2c_bus_rec struct to false.
Presumably that would work, as the previous commit ('drm/radeon/kms: add
radeon i2c algo') works? [0]
For the prescale:
u32 prescale = (((rdev-clock.default_sclk * 10)/(4 * 128 * 100) + 1)
8) + 128;
does rdev-clock.default_sclk get initialized properly on the mac? If
not, you can use radeon_get_engine_clock to read back the value from
the regs.
Looks like it in /sys/kernel/debug/dri/0/radeon_pm_info:
state: PM_STATE_DISABLED
default engine clock: 445500 kHz
current engine clock: 445500 kHz
default memory clock: 240750 kHz
current memory clock: 240750 kHz
you could also try the prescale algo from r520:
i2c_clock = 50;
prescale = (127 8) + ((rdev-clock.default_sclk * 10) / (4 * 127 *
i2c_clock));
[0] Though actually I notice there's a warning in dmesg with that as
well:
hmmm, I'll take a look.
[ 0.355965] [drm] TV1: INTERNAL_DAC2
[ 0.356037]
[ 0.356040] =
[ 0.356072] [ INFO: possible recursive locking detected ]
[ 0.356096] 2.6.32.6 #434
[ 0.356112] -
[ 0.356136] swapper/1 is trying to acquire lock:
[ 0.356158] (adap-bus_lock){+.+...}, at: [c0355910]
i2c_transfer+0x84/0x178
[ 0.356219]
[ 0.356221] but task is already holding lock:
[ 0.356249] (adap-bus_lock){+.+...}, at: [c0355910]
i2c_transfer+0x84/0x178
[ 0.356294]
[ 0.356296] other info that might help us debug this:
[ 0.356328] 1 lock held by swapper/1:
[ 0.356346] #0: (adap-bus_lock){+.+...}, at: [c0355910]
i2c_transfer+0x84/0x178
[ 0.356396]
[ 0.356397] stack backtrace:
[ 0.356422] Call Trace:
[ 0.356447] [ef871b50] [c00094fc] show_stack+0x7c/0x194 (unreliable)
[ 0.356485] [ef871b90] [c007ebe4] __lock_acquire+0x15c0/0x16a8
[ 0.356515] [ef871c20] [c007edb8] lock_acquire+0xec/0x128
[ 0.356549] [ef871c60] [c040bfa4] mutex_lock_nested+0x5c/0x2c8
[ 0.356580] [ef871cc0] [c0355910] i2c_transfer+0x84/0x178
[ 0.356612] [ef871cf0] [c02aa56c] radeon_i2c_xfer+0x44/0x80
[ 0.356643] [ef871d10] [c0355938] i2c_transfer+0xac/0x178
[ 0.356679] [ef871d40] [c026267c] drm_do_probe_ddc_edid+0x50/0x70
[ 0.356710] [ef871d70] [c02626e0] drm_ddc_read_edid+0x44/0xd8
[ 0.356741] [ef871d90] [c026285c] drm_get_edid+0xe8/0x1a0
[ 0.356770] [ef871db0] [c02a7b10] radeon_modeset_init+0x690/0x794
[ 0.356802] [ef871e10] [c028a964] radeon_driver_load_kms+0x150/0x1b0
[ 0.356841] [ef871e30] [c0257c8c] drm_get_dev+0x36c/0x45c
[ 0.356875] [ef871e60] [c0412180] radeon_pci_probe+0x1c/0x2c
[ 0.356912] [ef871e70] [c020c93c] local_pci_probe+0x24/0x34
[ 0.356943] [ef871e80] [c020dc78] pci_device_probe+0x70/0xb0
[ 0.356977] [ef871eb0] [c02f3e24] driver_probe_device+0x13c/0x2a8
[ 0.357008] [ef871ed0] [c02f4008] __driver_attach+0x78/0xb4
[ 0.357038] [ef871ef0] [c02f3218] bus_for_each_dev+0x68/0xc0
[ 0.357067] [ef871f20] [c02f3ad4] driver_attach+0x24/0x34
[ 0.357097] [ef871f30] [c02f2918] bus_add_driver+0x15c/0x324
[ 0.357127] [ef871f50] [c02f442c] driver_register+0xcc/0x184
[ 0.357158] [ef871f70] [c020df78] __pci_register_driver+0x74/0x108
[ 0.357190] [ef871f90] [c0252024] drm_init+0x74/0x108
[ 0.357224] [ef871fb0] [c05c3794] radeon_init+0xa4/0xb8
[ 0.357254] [ef871fc0] [c0003eec] do_one_initcall+0x70/0x210
[ 0.357289] [ef871fe0] [c05a21dc] kernel_init+0xbc/0x130
[ 0.357318] [ef871ff0] [c0014120] kernel_thread+0x4c/0x68
[ 0.651929] [drm] Determined LVDS native mode details from EDID
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Re: drm-radeon-testing commit 8131660130d3dc2629a150d47e6a04c8a1a6244b breaks LVDS on my PowerBook
2010/1/27 Michel Dänzer mic...@daenzer.net:
On Wed, 2010-01-27 at 10:30 -0500, Alex Deucher wrote:
2010/1/27 Michel Dänzer mic...@daenzer.net:
your commit 8131660130d3dc2629a150d47e6a04c8a1a6244b ('drm/radeon/kms:
add support for hw i2c on r1xx-r5xx') breaks LVDS on my PowerBook. It
looks kinda like blooming, though I can actually make out a higly
distorted part of what it's supposed to display, and there's a
panel/backlight blinking around every second or so.
Hmm, maybe the mac's edid is wired up such that hw i2c doesn't work or
the prescale calculation for your system needs adjusting. Switching
back to sw i2c should fix it in the meantime. Set the hw_capable bool
in the radeon_i2c_bus_rec struct to false.
Presumably that would work, as the previous commit ('drm/radeon/kms: add
radeon i2c algo') works? [0]
Out of curiosity, does hw i2c work on the DVI port? That would rule
out the prescale.
Alex
For the prescale:
u32 prescale = (((rdev-clock.default_sclk * 10)/(4 * 128 * 100) + 1)
8) + 128;
does rdev-clock.default_sclk get initialized properly on the mac? If
not, you can use radeon_get_engine_clock to read back the value from
the regs.
Looks like it in /sys/kernel/debug/dri/0/radeon_pm_info:
state: PM_STATE_DISABLED
default engine clock: 445500 kHz
current engine clock: 445500 kHz
default memory clock: 240750 kHz
current memory clock: 240750 kHz
[0] Though actually I notice there's a warning in dmesg with that as
well:
[ 0.355965] [drm] TV1: INTERNAL_DAC2
[ 0.356037]
[ 0.356040] =
[ 0.356072] [ INFO: possible recursive locking detected ]
[ 0.356096] 2.6.32.6 #434
[ 0.356112] -
[ 0.356136] swapper/1 is trying to acquire lock:
[ 0.356158] (adap-bus_lock){+.+...}, at: [c0355910]
i2c_transfer+0x84/0x178
[ 0.356219]
[ 0.356221] but task is already holding lock:
[ 0.356249] (adap-bus_lock){+.+...}, at: [c0355910]
i2c_transfer+0x84/0x178
[ 0.356294]
[ 0.356296] other info that might help us debug this:
[ 0.356328] 1 lock held by swapper/1:
[ 0.356346] #0: (adap-bus_lock){+.+...}, at: [c0355910]
i2c_transfer+0x84/0x178
[ 0.356396]
[ 0.356397] stack backtrace:
[ 0.356422] Call Trace:
[ 0.356447] [ef871b50] [c00094fc] show_stack+0x7c/0x194 (unreliable)
[ 0.356485] [ef871b90] [c007ebe4] __lock_acquire+0x15c0/0x16a8
[ 0.356515] [ef871c20] [c007edb8] lock_acquire+0xec/0x128
[ 0.356549] [ef871c60] [c040bfa4] mutex_lock_nested+0x5c/0x2c8
[ 0.356580] [ef871cc0] [c0355910] i2c_transfer+0x84/0x178
[ 0.356612] [ef871cf0] [c02aa56c] radeon_i2c_xfer+0x44/0x80
[ 0.356643] [ef871d10] [c0355938] i2c_transfer+0xac/0x178
[ 0.356679] [ef871d40] [c026267c] drm_do_probe_ddc_edid+0x50/0x70
[ 0.356710] [ef871d70] [c02626e0] drm_ddc_read_edid+0x44/0xd8
[ 0.356741] [ef871d90] [c026285c] drm_get_edid+0xe8/0x1a0
[ 0.356770] [ef871db0] [c02a7b10] radeon_modeset_init+0x690/0x794
[ 0.356802] [ef871e10] [c028a964] radeon_driver_load_kms+0x150/0x1b0
[ 0.356841] [ef871e30] [c0257c8c] drm_get_dev+0x36c/0x45c
[ 0.356875] [ef871e60] [c0412180] radeon_pci_probe+0x1c/0x2c
[ 0.356912] [ef871e70] [c020c93c] local_pci_probe+0x24/0x34
[ 0.356943] [ef871e80] [c020dc78] pci_device_probe+0x70/0xb0
[ 0.356977] [ef871eb0] [c02f3e24] driver_probe_device+0x13c/0x2a8
[ 0.357008] [ef871ed0] [c02f4008] __driver_attach+0x78/0xb4
[ 0.357038] [ef871ef0] [c02f3218] bus_for_each_dev+0x68/0xc0
[ 0.357067] [ef871f20] [c02f3ad4] driver_attach+0x24/0x34
[ 0.357097] [ef871f30] [c02f2918] bus_add_driver+0x15c/0x324
[ 0.357127] [ef871f50] [c02f442c] driver_register+0xcc/0x184
[ 0.357158] [ef871f70] [c020df78] __pci_register_driver+0x74/0x108
[ 0.357190] [ef871f90] [c0252024] drm_init+0x74/0x108
[ 0.357224] [ef871fb0] [c05c3794] radeon_init+0xa4/0xb8
[ 0.357254] [ef871fc0] [c0003eec] do_one_initcall+0x70/0x210
[ 0.357289] [ef871fe0] [c05a21dc] kernel_init+0xbc/0x130
[ 0.357318] [ef871ff0] [c0014120] kernel_thread+0x4c/0x68
[ 0.651929] [drm] Determined LVDS native mode details from EDID
--
Earthling Michel Dänzer | http://www.vmware.com
Libre software enthusiast | Debian, X and DRI developer
--
The Planet: dedicated and managed hosting, cloud storage, colocation
Stay online with enterprise data centers and the best network in the business
Choose flexible plans and management services without long-term contracts
Personal 24x7 support from experience hosting pros just a phone call away.
http://p.sf.net/sfu/theplanet-com
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