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@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 --- -- To unsubscribe from this list: send the line "unsubscribe linux-fbdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx <mailto:majordomo@xxxxxxxxxxxxxxx> More majordomo info at http://vger.kernel.org/majordomo-info.html
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