On 18 January 2016 at 22:45, Carlos Palminha <CARLOS.PALMINHA@xxxxxxxxxxxx> wrote:
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);
> }
>
so, this will call adv7511 driver's
get_modes call back.I wonder if the system boot up, it can get modes or not.
You can test it with the modetest. i.e. $ modetest -M DRM_DRIVER_NAME -c
> On 31-12-2015 02:19, Xinliang Liu wrote:
>>
>>
>> On 31 December 2015 at 02:46, Carlos Palminha
>> <CARLOS.PALMINHA@xxxxxxxxxxxx <mailto:CARLOS.PALMINHA@xxxxxxxxxxxx>> 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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