# Re: Whats missing in my new FB DRM driver... "No connectors reported connected with modes"? - List: linux-fbdev - 2 messages, 1 author - Page: https://ratatoskr.run/linux-fbdev/2016/01/9092274/t ## Re: Whats missing in my new FB DRM driver... "No connectors reported connected with modes"? - From: Carlos Palminha \ - Date: 2016-01-18 14:40:16 - Message: https://ratatoskr.run/linux-fbdev/2016/01/9092274.md ```text 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 > > 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 --- > -- > To unsubscribe from this list: send the line "unsubscribe > linux-fbdev" in > the body of a message to majordomo@vger.kernel.org > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > ``` ## Re: Whats missing in my new FB DRM driver... "No connectors reported connected with modes"? - From: Carlos Palminha \ - Date: 2016-01-18 14:45:52 - Message: https://ratatoskr.run/linux-fbdev/2016/01/9092273.md ```text 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 >> > 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 --- >> -- >> To unsubscribe from this list: send the line "unsubscribe >> linux-fbdev" in >> the body of a message to majordomo@vger.kernel.org >> >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> >> ```