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

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@synopsys.com <mailto:CARLOS.PALMINHA@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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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:

quoted

On 31 December 2015 at 02:46, Carlos Palminha
<CARLOS.PALMINHA@synopsys.com <mailto:CARLOS.PALMINHA@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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