Whats missing in my new FB DRM driver... "No connectors reported connected with modes"?

[Carlos Palminha]

I'm also getting a message from DRM saying can't find any crtc or sizes...i'm really missing something here.
:(

-- log --
[drm] Initialized drm 1.1.0 20060810
drm-arcpgu e0017000.pgu: No connectors reported connected with modes
[drm] Cannot find any crtc or sizes - going 1024x768
Console: switching to colour frame buffer device 128x48
drm-arcpgu e0017000.pgu: fb0: frame buffer device
[drm] Initialized drm-arcpgu 1.0.0 20151127 on minor 0
-- log ---

Any help?

Regards,
C.Palminha


On 18-01-2016 14:32, Carlos Palminha wrote:
> Hi Xinliang,
> 
> My get_modes seems to be implemented as the rcar driver...
> Probably still missing some init step?
> 
> Regards,
> C.Palminha
> 
> 
> static int arcpgu_drm_connector_get_modes(struct drm_connector *connector)
> {
> struct drm_encoder_slave *slave;
> const struct drm_encoder_slave_funcs *sfuncs;
> struct arcpgu_drm_connector * con =
> container_of(connector, struct arcpgu_drm_connector, connector);
> 
> slave = con->encoder_slave;
> if(slave == NULL) {
> dev_err(connector->dev->dev,
> "connector_get_modes: cannot find slave encoder for connector\n");
> return 0;
> }
> 
> sfuncs = slave->slave_funcs;
> if(sfuncs->get_modes == NULL){
> return 0;
> }
> 
> return sfuncs->get_modes(&slave->base,connector);
> }
> 
> On 31-12-2015 02:19, Xinliang Liu wrote:
>>
>>
>> On 31 December 2015 at 02:46, Carlos Palminha
>> <CARLOS.PALMINHA at synopsys.com <mailto:CARLOS.PALMINHA at synopsys.com>> wrote:
>>
>>     Hi guys,
>>
>>     I'm writing a DRM driver for a framebuffer embedded hardware that
>>     uses an i2c encoder (adv7511), following the basic steps suggested
>>     by Laurent in "anatomy of an embedded KMS driver":
>>     https://www.youtube.com/watch?v=Ja8fM7rTae4
>>
>>     After initiliazing all kms, crtc, encoder, i2c, connector functions
>>     and structures i'm calling drm_fbdev_cma_init to create a fbdev.
>>
>>     When booting i'm getting an error message saying "No connectors
>>     reported connected with modes", but the driver init is ok and i can
>>     find the /dev/dri/* and /dev/fb0 devices.
>>
>>     Any clue what i might be missing during the driver load?
>>
>>
>> ​I think you should check on the 'get_modes'​ call back of adv7511
>> driver. (Or, if possible show us the code.)
>>
>> Best,
>> -xinliang
>>
>>
>>     Thanks...
>>
>>     Regards,
>>     C.Palminha
>>
>>     --- boot log snippet ---
>>     [drm] Initialized drm 1.1.0 20060810
>>     drm-arcpgu e0017000.pgu: No connectors reported connected with modes
>>     [drm] Cannot find any crtc or sizes - going 1024x768
>>     Console: switching to colour frame buffer device 128x48
>>     drm-arcpgu e0017000.pgu: fb0:  frame buffer device
>>     [drm] Initialized drm-arcpgu 1.0.0 20151127 on minor 0
>>     --- boot log snippet ---
>>     --
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