Hi lkml,
I'm using the kernel 3.2-rc1 and I'm getting the following message in my dmesg: fixme: max PWM is zero.
I don't remember if this message was here before...
I'm trying to verify what is causing this. I found this waring message in the drivers/gpu/drm/i915/intel_panel.c.
There is a comment above this message, talking about put a code to query mode clock or hw clock to set the max PWM.
Bellow is my lspci.
I will be happy if you continue to cc me, and if you need any test, I'm able to do this.
00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub (rev 09) Subsystem: FIRST INTERNATIONAL Computer Inc Device 3009 Flags: bus master, fast devsel, latency 0 Capabilities: [e0] Vendor Specific Information: Len=0a <?> Kernel driver in use: agpgart-intel Kernel modules: intel-agp
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller]) Subsystem: FIRST INTERNATIONAL Computer Inc Device 3009 Flags: bus master, fast devsel, latency 0, IRQ 44 Memory at f8000000 (64-bit, non-prefetchable) [size=4M] Memory at d0000000 (64-bit, prefetchable) [size=256M] I/O ports at 1800 [size=8] Expansion ROM at <unassigned> [disabled] Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [d0] Power Management version 3 Kernel driver in use: i915 Kernel modules: i915
00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 09) Subsystem: FIRST INTERNATIONAL Computer Inc Device 3009 Flags: bus master, fast devsel, latency 0 Memory at f8400000 (64-bit, non-prefetchable) [size=1M] Capabilities: [d0] Power Management version 3
00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 03) (prog-if 00 [UHCI]) Subsystem: FIRST INTERNATIONAL Computer Inc Device 3009 Flags: bus master, medium devsel, latency 0, IRQ 16 I/O ports at 1820 [size=32] Capabilities: [50] PCI Advanced Features Kernel driver in use: uhci_hcd
00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 03) (prog-if 00 [UHCI]) Subsystem: FIRST INTERNATIONAL Computer Inc Device 3009 Flags: bus master, medium devsel, latency 0, IRQ 21 I/O ports at 1840 [size=32] Capabilities: [50] PCI Advanced Features Kernel driver in use: uhci_hcd
00:1a.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 03) (prog-if 00 [UHCI]) Subsystem: FIRST INTERNATIONAL Computer Inc Device 3009 Flags: bus master, medium devsel, latency 0, IRQ 19 I/O ports at 1860 [size=32] Capabilities: [50] PCI Advanced Features Kernel driver in use: uhci_hcd
00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 03) (prog-if 20 [EHCI]) Subsystem: FIRST INTERNATIONAL Computer Inc Device 3009 Flags: bus master, medium devsel, latency 0, IRQ 19 Memory at f8704000 (32-bit, non-prefetchable) [size=1K] Capabilities: [50] Power Management version 2 Capabilities: [58] Debug port: BAR=1 offset=00a0 Capabilities: [98] PCI Advanced Features Kernel driver in use: ehci_hcd
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03) Subsystem: FIRST INTERNATIONAL Computer Inc Device 3009 Flags: bus master, fast devsel, latency 0, IRQ 43 Memory at f8700000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 Capabilities: [100] Virtual Channel Capabilities: [130] Root Complex Link Kernel driver in use: snd_hda_intel Kernel modules: snd-hda-intel
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 03) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=02, subordinate=03, sec-latency=0 I/O behind bridge: 00002000-00002fff Memory behind bridge: f4000000-f5ffffff Prefetchable memory behind bridge: 00000000f0000000-00000000f1ffffff Capabilities: [40] Express Root Port (Slot+), MSI 00 Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [90] Subsystem: Gammagraphx, Inc. (or missing ID) Device 0000 Capabilities: [a0] Power Management version 2 Capabilities: [100] Virtual Channel Capabilities: [180] Root Complex Link Kernel driver in use: pcieport Kernel modules: shpchp
00:1c.5 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 6 (rev 03) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=04, subordinate=05, sec-latency=0 I/O behind bridge: 00003000-00003fff Memory behind bridge: f6000000-f7ffffff Prefetchable memory behind bridge: 00000000f2000000-00000000f3ffffff Capabilities: [40] Express Root Port (Slot+), MSI 00 Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [90] Subsystem: Gammagraphx, Inc. (or missing ID) Device 0000 Capabilities: [a0] Power Management version 2 Capabilities: [100] Virtual Channel Capabilities: [180] Root Complex Link Kernel driver in use: pcieport Kernel modules: shpchp
00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 03) (prog-if 00 [UHCI]) Subsystem: FIRST INTERNATIONAL Computer Inc Device 3009 Flags: bus master, medium devsel, latency 0, IRQ 23 I/O ports at 1880 [size=32] Capabilities: [50] PCI Advanced Features Kernel driver in use: uhci_hcd
00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 03) (prog-if 00 [UHCI]) Subsystem: FIRST INTERNATIONAL Computer Inc Device 3009 Flags: bus master, medium devsel, latency 0, IRQ 19 I/O ports at 18a0 [size=32] Capabilities: [50] PCI Advanced Features Kernel driver in use: uhci_hcd
00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 03) (prog-if 00 [UHCI]) Subsystem: FIRST INTERNATIONAL Computer Inc Device 3009 Flags: bus master, medium devsel, latency 0, IRQ 18 I/O ports at 18c0 [size=32] Capabilities: [50] PCI Advanced Features Kernel driver in use: uhci_hcd
00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 03) (prog-if 20 [EHCI]) Subsystem: FIRST INTERNATIONAL Computer Inc Device 3009 Flags: bus master, medium devsel, latency 0, IRQ 23 Memory at f8704400 (32-bit, non-prefetchable) [size=1K] Capabilities: [50] Power Management version 2 Capabilities: [58] Debug port: BAR=1 offset=00a0 Capabilities: [98] PCI Advanced Features Kernel driver in use: ehci_hcd
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 93) (prog-if 01 [Subtractive decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=06, subordinate=06, sec-latency=0 Capabilities: [50] Subsystem: FIRST INTERNATIONAL Computer Inc Device 3009
00:1f.0 ISA bridge: Intel Corporation ICH9M LPC Interface Controller (rev 03) Subsystem: FIRST INTERNATIONAL Computer Inc Device 3009 Flags: bus master, medium devsel, latency 0 Capabilities: [e0] Vendor Specific Information: Len=0c <?> Kernel modules: iTCO_wdt
00:1f.2 IDE interface: Intel Corporation ICH9M/M-E 2 port SATA IDE Controller (rev 03) (prog-if 8f [Master SecP SecO PriP PriO]) Subsystem: FIRST INTERNATIONAL Computer Inc Device 3009 Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 19 I/O ports at 18f8 [size=8] I/O ports at 180c [size=4] I/O ports at 18f0 [size=8] I/O ports at 1808 [size=4] I/O ports at 18e0 [size=16] I/O ports at 1810 [size=16] Capabilities: [70] Power Management version 3 Capabilities: [b0] PCI Advanced Features Kernel driver in use: ata_piix
00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 03) Subsystem: FIRST INTERNATIONAL Computer Inc Device 3009 Flags: medium devsel, IRQ 19 Memory at c0000000 (64-bit, non-prefetchable) [size=256] I/O ports at 1c00 [size=32] Kernel driver in use: i801_smbus Kernel modules: i2c-i801
00:1f.5 IDE interface: Intel Corporation ICH9M/M-E 2 port SATA IDE Controller (rev 03) (prog-if 85 [Master SecO PriO]) Subsystem: FIRST INTERNATIONAL Computer Inc Device 3009 Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 19 I/O ports at 1c50 [size=8] I/O ports at 1c44 [size=4] I/O ports at 1c48 [size=8] I/O ports at 1c40 [size=4] I/O ports at 1c30 [size=16] I/O ports at 1c20 [size=16] Capabilities: [70] Power Management version 3 Capabilities: [b0] PCI Advanced Features Kernel driver in use: ata_piix
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02) Subsystem: FIRST INTERNATIONAL Computer Inc Device 3009 Flags: bus master, fast devsel, latency 0, IRQ 42 I/O ports at 3000 [size=256] Memory at f6000000 (64-bit, non-prefetchable) [size=4K] Memory at f2000000 (64-bit, prefetchable) [size=64K] [virtual] Expansion ROM at f2020000 [disabled] [size=128K] Capabilities: [40] Power Management version 3 Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [70] Express Endpoint, MSI 01 Capabilities: [b0] MSI-X: Enable- Count=2 Masked- Capabilities: [d0] Vital Product Data Capabilities: [100] Advanced Error Reporting Capabilities: [140] Virtual Channel Capabilities: [160] Device Serial Number 71-00-00-00-68-4c-e0-00 Kernel driver in use: r8169 Kernel modules: r8169
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