diff options
| author |   Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> | 2018-04-27 23:21:52 +0100 |
|---|---|---|
| committer |   Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2018-05-05 17:11:19 +0300 |
| commit | 5361cc7f8e9146f393cfcb76890d8c80a4e73086 (patch) | |
| tree | d4b225f12cfd439cf896bf3dc2773e390799cea3 /drivers/gpu/drm/rcar-du/rcar_du_crtc.h | |
| parent | dt-bindings: display: renesas: Add R-Car M3-N HDMI TX DT bindings (diff) | |
| download | linux-dev-5361cc7f8e9146f393cfcb76890d8c80a4e73086.tar.xz linux-dev-5361cc7f8e9146f393cfcb76890d8c80a4e73086.zip | |
drm: rcar-du: Split CRTC handling to support hardware indexing
The DU CRTC driver does not support distinguishing between a hardware
index, and a software (CRTC) index in the event that a DU channel might
not be populated by the hardware.
Support this by adapting the rcar_du_device_info structure to store a
bitmask of available channels rather than a count of CRTCs. The count
can then be obtained by determining the hamming weight of the bitmask.
This allows the rcar_du_crtc_create() function to distinguish between
both index types, and non-populated DU channels will be skipped without
leaving a gap in the software CRTC indexes.
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Diffstat (limited to 'drivers/gpu/drm/rcar-du/rcar_du_crtc.h')
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_crtc.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.h b/drivers/gpu/drm/rcar-du/rcar_du_crtc.h index fdc2bf99bda1..84b5e23a85b1 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.h +++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.h @@ -80,7 +80,8 @@ enum rcar_du_output { RCAR_DU_OUTPUT_MAX, }; -int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int index); +int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int swindex, + unsigned int hwindex); void rcar_du_crtc_suspend(struct rcar_du_crtc *rcrtc); void rcar_du_crtc_resume(struct rcar_du_crtc *rcrtc); |