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| author |   Dave Airlie <airlied@redhat.com> | 2019-11-14 09:28:30 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2019-11-14 09:28:46 +1000 |
| commit | 94bc7f56a8afd0522439a48162b8b8167c227c89 (patch) | |
| tree | 5e9db27bb0116e35c4aa59bf7f2bd08db3d30c46 /drivers/gpu/drm/arc | |
| parent | Merge tag 'drm-misc-next-fixes-2019-11-13' of git://anongit.freedesktop.org/drm/drm-misc into drm-next (diff) | |
| parent | drm/arcpgu: rework encoder search (diff) | |
| download | linux-dev-94bc7f56a8afd0522439a48162b8b8167c227c89.tar.xz linux-dev-94bc7f56a8afd0522439a48162b8b8167c227c89.zip | |
Merge tag 'arcpgu-updates-2019.07.18' of github.com:abrodkin/linux into drm-next
This is a pretty simple improvement that allows to find encoder
as the one and only (ARC PGU doesn't support more than one) endpoint
instead of using non-standard "encoder-slave" property.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CY4PR1201MB0120FDB10A777345F9C27720A1C90@CY4PR1201MB0120.namprd12.prod.outlook.com
Diffstat (limited to 'drivers/gpu/drm/arc')
| -rw-r--r-- | drivers/gpu/drm/arc/arcpgu_drv.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/gpu/drm/arc/arcpgu_drv.c b/drivers/gpu/drm/arc/arcpgu_drv.c index 6b7f791685ec..d6a6692db0ac 100644 --- a/drivers/gpu/drm/arc/arcpgu_drv.c +++ b/drivers/gpu/drm/arc/arcpgu_drv.c @@ -14,6 +14,7 @@ #include <drm/drm_fb_helper.h> #include <drm/drm_gem_cma_helper.h> #include <drm/drm_gem_framebuffer_helper.h> +#include <drm/drm_of.h> #include <drm/drm_probe_helper.h> #include <linux/dma-mapping.h> #include <linux/module.h> @@ -45,7 +46,7 @@ static int arcpgu_load(struct drm_device *drm) { struct platform_device *pdev = to_platform_device(drm->dev); struct arcpgu_drm_private *arcpgu; - struct device_node *encoder_node; + struct device_node *encoder_node = NULL, *endpoint_node = NULL; struct resource *res; int ret; @@ -80,14 +81,23 @@ static int arcpgu_load(struct drm_device *drm) if (arc_pgu_setup_crtc(drm) < 0) return -ENODEV; - /* find the encoder node and initialize it */ - encoder_node = of_parse_phandle(drm->dev->of_node, "encoder-slave", 0); + /* + * There is only one output port inside each device. It is linked with + * encoder endpoint. + */ + endpoint_node = of_graph_get_next_endpoint(pdev->dev.of_node, NULL); + if (endpoint_node) { + encoder_node = of_graph_get_remote_port_parent(endpoint_node); + of_node_put(endpoint_node); + } + if (encoder_node) { ret = arcpgu_drm_hdmi_init(drm, encoder_node); of_node_put(encoder_node); if (ret < 0) return ret; } else { + dev_info(drm->dev, "no encoder found. Assumed virtual LCD on simulation platform\n"); ret = arcpgu_drm_sim_init(drm, NULL); if (ret < 0) return ret; |