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Message-ID: <CAH9NwWdmhmLB5io5RWVQBj6c7zjXT9hFa7OAHVrL6oY8P0kjaw@mail.gmail.com>
Date: Tue, 12 Jun 2012 13:37:36 +0200
From: Christian Gmeiner <christian.gmeiner@...il.com>
To: Patrik Jakobsson <patrik.r.jakobsson@...il.com>
Cc: linux-kernel@...r.kernel.org, Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: gma500: Cannot find any crtc or sizes - going 1024x768
2012/6/12 Patrik Jakobsson <patrik.r.jakobsson@...il.com>:
> On Tue, Jun 12, 2012 at 10:59 AM, Christian Gmeiner
> <christian.gmeiner@...il.com> wrote:
>> Got a little bit further:
>>
>> diff --git a/drivers/gpu/drm/gma500/mid_bios.c
>> b/drivers/gpu/drm/gma500/mid_bios.c
>> index b2a790b..9ee3122 100644
>> --- a/drivers/gpu/drm/gma500/mid_bios.c
>> +++ b/drivers/gpu/drm/gma500/mid_bios.c
>> @@ -55,8 +55,12 @@ static void mid_get_fuse_settings(struct drm_device *dev)
>> pci_read_config_dword(pci_root, 0xD4, &fuse_value);
>>
>> /* FB_MIPI_DISABLE doesn't mean LVDS on with Medfield */
>> +#if 0
>> if (IS_MRST(dev))
>> dev_priv->iLVDS_enable = fuse_value & FB_MIPI_DISABLE;
>> +#else
>> + dev_priv->iLVDS_enable = 1;
>> +#endif
>>
>> DRM_INFO("internal display is %s\n",
>> dev_priv->iLVDS_enable ? "LVDS display" : "MIPI display");
>> diff --git a/drivers/gpu/drm/gma500/psb_intel_lvds.c
>> b/drivers/gpu/drm/gma500/psb_intel_lvds.c
>> index c83f5b5..5b49522 100644
>> --- a/drivers/gpu/drm/gma500/psb_intel_lvds.c
>> +++ b/drivers/gpu/drm/gma500/psb_intel_lvds.c
>> @@ -530,11 +530,14 @@ static int psb_intel_lvds_get_modes(struct
>> drm_connector *connector)
>> struct psb_intel_lvds_priv *lvds_priv = psb_intel_encoder->dev_priv;
>> int ret = 0;
>>
>> + printk(KERN_INFO "test 1\n");
>> +#if 0
>> if (!IS_MRST(dev))
>> ret = psb_intel_ddc_get_modes(connector,
>> &lvds_priv->i2c_bus->adapter);
>>
>> if (ret)
>> return ret;
>> +#endif
>>
>> /* Didn't get an EDID, so
>> * Set wide sync ranges so we get all modes
>>
>>
>> [ 8.233858] [drm:drm_helper_probe_single_connector_modes],
>> [CONNECTOR:7:LVDS-1]
>> [ 8.233869] test 1
>> [ 8.233967] [drm:drm_helper_probe_single_connector_modes],
>> [CONNECTOR:7:LVDS-1] probed modes :
>> [ 8.233993] [drm:drm_mode_debug_printmodeline], Modeline
>> 10:"1024x600" 75 53990 1024 1072 1104 1184 600 603 604 608 0x48 0x0
>> [ 8.234038] [drm:drm_setup_crtcs],
>> [ 8.234053] [drm:drm_enable_connectors], connector 7 enabled? yes
>> [ 8.234066] [drm:drm_target_preferred], looking for cmdline mode on
>> connector 7
>> [ 8.234077] [drm:drm_target_preferred], looking for preferred mode
>> on connector 7
>> [ 8.234088] [drm:drm_target_preferred], found mode 1024x600
>> [ 8.234101] [drm:drm_setup_crtcs], picking CRTCs for 2048x2048 config
>> [ 8.234116] [drm:drm_setup_crtcs], desired mode 1024x600 set on crtc 3
>> [ 8.242199] fbcon: psbfb (fb0) is primary device
>> [ 8.244065] [drm:drm_crtc_helper_set_config],
>> [ 8.244076] [drm:drm_crtc_helper_set_config], [CRTC:3] [FB:12]
>> #connectors=1 (x y) (0 0)
>> [ 8.244099] [drm:drm_crtc_helper_set_config], crtc has no fb, full mode set
>> [ 8.244106] [drm:drm_crtc_helper_set_config], modes are different,
>> full mode set
>> [ 8.244120] [drm:drm_mode_debug_printmodeline], Modeline 0:"" 0 0 0
>> 0 0 0 0 0 0 0 0x0 0x0
>> [ 8.244138] [drm:drm_mode_debug_printmodeline], Modeline
>> 11:"1024x600" 75 53990 1024 1072 1104 1184 600 603 604 608 0x48 0x0
>> [ 8.244145] [drm:drm_crtc_helper_set_config], encoder changed, full
>> mode switch
>> [ 8.244151] [drm:drm_crtc_helper_set_config], crtc changed, full mode switch
>> [ 8.244161] [drm:drm_crtc_helper_set_config], [CONNECTOR:7:LVDS-1]
>> to [CRTC:3]
>> [ 8.244168] [drm:drm_crtc_helper_set_config], attempting to set
>> mode from userspace
>> [ 8.244184] [drm:drm_mode_debug_printmodeline], Modeline
>> 11:"1024x600" 75 53990 1024 1072 1104 1184 600 603 604 608 0x48 0x0
>> [ 8.244195] Can't support LVDS on pipe A
>> [ 8.244201] [drm:drm_crtc_helper_set_mode], Encoder fixup failed
>> [ 8.244211] [drm:drm_crtc_helper_set_config] *ERROR* failed to set
>> mode on [CRTC:3]
>> [ 8.244222] fbcon_init: detected unhandled fb_set_par error, error code -22
>> [ 8.262085] Console: switching to colour frame buffer device 128x37
>> [ 8.293680] fb0: psbfb frame buffer device
>> [ 8.294817] drm: registered panic notifier
>> [ 8.295173] [drm] Initialized gma500 1.0.0 2011-06-06 for
>> 0000:00:02.0 on minor 0
>
> You're hitting a bug in the IS_MRST macro. You might actually have the fuse
> value but IS_MRST returns false for 0x4108. Try the following patch:
>
> diff --git a/drivers/gpu/drm/gma500/psb_drv.h b/drivers/gpu/drm/gma500/psb_drv.h
> index 1bd115e..e8640ae 100644
> --- a/drivers/gpu/drm/gma500/psb_drv.h
> +++ b/drivers/gpu/drm/gma500/psb_drv.h
> @@ -44,7 +44,7 @@ enum {
> };
>
> #define IS_PSB(dev) (((dev)->pci_device & 0xfffe) == 0x8108)
> -#define IS_MRST(dev) (((dev)->pci_device & 0xfffc) == 0x4100)
> +#define IS_MRST(dev) (((dev)->pci_device & 0xfff0) == 0x4100)
> #define IS_MFLD(dev) (((dev)->pci_device & 0xfff8) == 0x0130)
>
> /*
Works much better with this patch applied - I see a linux desktop on
the panel :)
[ 17.907584] gma500 0000:00:02.0: setting latency timer to 64
[ 17.907908] [drm:psb_intel_opregion_setup], Public ACPI methods supported
[ 17.907921] [drm:psb_intel_opregion_setup], ASLE supported
[ 17.907945] gma500 0000:00:02.0: Enabling MSI failed!
[ 17.909051] [drm] internal display is LVDS display
[ 17.909183] ioremap error for 0x3ddbd000-0x3ddbe000, requested 0x10, got 0x0
[ 17.909294] gma500 0000:00:02.0: Unable to read GCT!
[ 17.917913] gma500 0000:00:02.0: VBT signature missing
[ 17.925659] hub 6-0:1.0: USB hub found
[ 17.925775] hub 6-0:1.0: 1 port detected
[ 17.926214] ohci_hcd 0000:02:08.1: setting latency timer to 64
[ 17.926233] ohci_hcd 0000:02:08.1: OHCI Host Controller
[ 17.926349] ohci_hcd 0000:02:08.1: new USB bus registered, assigned
bus number 7
[ 17.926520] ohci_hcd 0000:02:08.1: irq 16, io mem 0xd014e000
[ 17.966094] usb 1-1: new high-speed USB device number 2 using ehci_hcd
[ 17.982193] hub 7-0:1.0: USB hub found
[ 17.982308] hub 7-0:1.0: 1 port detected
[ 17.982684] ohci_hcd 0000:02:08.2: setting latency timer to 64
[ 17.982703] ohci_hcd 0000:02:08.2: OHCI Host Controller
[ 17.982818] ohci_hcd 0000:02:08.2: new USB bus registered, assigned
bus number 8
[ 17.982990] ohci_hcd 0000:02:08.2: irq 16, io mem 0xd014d000
[ 18.000555] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
[ 18.000657] [drm] No driver support for vblank timestamp query.
[ 18.000901] gma500 0000:00:02.0: No ddc adapter available!
[ 18.041626] hub 8-0:1.0: USB hub found
[ 18.041740] hub 8-0:1.0: 1 port detected
[ 18.081160] hub 1-1:1.0: USB hub found
[ 18.081470] hub 1-1:1.0: 3 ports detected
[ 18.354785] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:7:LVDS-1]
[ 18.354815] [drm:drm_helper_probe_single_connector_modes],
[CONNECTOR:7:LVDS-1] probed modes :
[ 18.354841] [drm:drm_mode_debug_printmodeline], Modeline
10:"1024x600" 75 53990 1024 1072 1104 1184 600 603 604 608 0x48 0x0
[ 18.354853] [drm:drm_setup_crtcs],
[ 18.354868] [drm:drm_enable_connectors], connector 7 enabled? yes
[ 18.354881] [drm:drm_target_preferred], looking for cmdline mode on
connector 7
[ 18.354894] [drm:drm_target_preferred], looking for preferred mode
on connector 7
[ 18.354906] [drm:drm_target_preferred], found mode 1024x600
[ 18.354918] [drm:drm_setup_crtcs], picking CRTCs for 2048x2048 config
[ 18.354933] [drm:drm_setup_crtcs], desired mode 1024x600 set on crtc 3
[ 18.367788] fbcon: psbfb (fb0) is primary device
[ 18.370608] [drm:drm_crtc_helper_set_config],
[ 18.370619] [drm:drm_crtc_helper_set_config], [CRTC:3] [FB:12]
#connectors=1 (x y) (0 0)
[ 18.370643] [drm:drm_crtc_helper_set_config], crtc has no fb, full mode set
[ 18.370649] [drm:drm_crtc_helper_set_config], modes are different,
full mode set
[ 18.370664] [drm:drm_mode_debug_printmodeline], Modeline 0:"" 0 0 0
0 0 0 0 0 0 0 0x0 0x0
[ 18.370681] [drm:drm_mode_debug_printmodeline], Modeline
11:"1024x600" 75 53990 1024 1072 1104 1184 600 603 604 608 0x48 0x0
[ 18.370689] [drm:drm_crtc_helper_set_config], encoder changed, full
mode switch
[ 18.370696] [drm:drm_crtc_helper_set_config], crtc changed, full mode switch
[ 18.370706] [drm:drm_crtc_helper_set_config], [CONNECTOR:7:LVDS-1]
to [CRTC:3]
[ 18.370713] [drm:drm_crtc_helper_set_config], attempting to set
mode from userspace
[ 18.370730] [drm:drm_mode_debug_printmodeline], Modeline
11:"1024x600" 75 53990 1024 1072 1104 1184 600 603 604 608 0x48 0x0
[ 18.370747] [drm:drm_crtc_helper_set_mode], [CRTC:3]
[ 18.401081] usb 6-1: new full-speed USB device number 2 using ohci_hcd
[ 18.440582] [drm:drm_crtc_helper_set_mode], [ENCODER:8:LVDS-8] set
[MODE:11:1024x600]
[ 18.477990] [drm:drm_crtc_helper_set_config], Setting connector
DPMS state to on
[ 18.478002] [drm:drm_crtc_helper_set_config],
[CONNECTOR:7:LVDS-1] set DPMS on
[ 18.505542] [drm:drm_crtc_helper_set_config],
[ 18.505550] [drm:drm_crtc_helper_set_config], [CRTC:4] [NOFB]
[ 18.603146] Console: switching to colour frame buffer device 128x37
[ 18.613253] usbcore: registered new interface driver usbhid
[ 18.613256] usbhid: USB HID core driver
[ 18.619328] fb0: psbfb frame buffer device
[ 18.619332] drm: registered panic notifier
[ 18.619857] [drm] Initialized gma500 1.0.0 2011-06-06 for
0000:00:02.0 on minor 0
Is there a way to overwrite the found modeline?
Thanks
---
Christian Gmeiner, MSc
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