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Message-Id: <20200731081836.3048-4-laurentiu.palcu@oss.nxp.com>
Date: Fri, 31 Jul 2020 11:18:31 +0300
From: Laurentiu Palcu <laurentiu.palcu@....nxp.com>
To: Lucas Stach <l.stach@...gutronix.de>,
Philipp Zabel <p.zabel@...gutronix.de>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
Fabio Estevam <festevam@...il.com>,
NXP Linux Team <linux-imx@....com>
Cc: lukas@...mn.com, agx@...xcpu.org, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org, laurentiu.palcu@....nxp.com,
linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v9 3/5] drm/imx/dcss: use drm_bridge_connector API
From: Laurentiu Palcu <laurentiu.palcu@....com>
Make use of drm_bridge_connector API to have the connector initialized by the
display controller.
Signed-off-by: Laurentiu Palcu <laurentiu.palcu@....com>
---
drivers/gpu/drm/imx/dcss/dcss-dev.c | 17 +++++++++++++---
drivers/gpu/drm/imx/dcss/dcss-kms.c | 31 ++++++++++++++++++++++++-----
drivers/gpu/drm/imx/dcss/dcss-kms.h | 1 +
3 files changed, 41 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/imx/dcss/dcss-dev.c b/drivers/gpu/drm/imx/dcss/dcss-dev.c
index 83a4840435cf..c849533ca83e 100644
--- a/drivers/gpu/drm/imx/dcss/dcss-dev.c
+++ b/drivers/gpu/drm/imx/dcss/dcss-dev.c
@@ -8,9 +8,12 @@
#include <linux/of_graph.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
+#include <drm/drm_bridge_connector.h>
+#include <drm/drm_device.h>
#include <drm/drm_modeset_helper.h>
#include "dcss-dev.h"
+#include "dcss-kms.h"
static void dcss_clocks_enable(struct dcss_dev *dcss)
{
@@ -247,9 +250,13 @@ void dcss_dev_destroy(struct dcss_dev *dcss)
int dcss_dev_suspend(struct device *dev)
{
struct dcss_dev *dcss = dcss_drv_dev_to_dcss(dev);
+ struct drm_device *ddev = dcss_drv_dev_to_drm(dev);
+ struct dcss_kms_dev *kms = container_of(ddev, struct dcss_kms_dev, base);
int ret;
- drm_mode_config_helper_suspend(dcss_drv_dev_to_drm(dev));
+ drm_bridge_connector_disable_hpd(kms->connector);
+
+ drm_mode_config_helper_suspend(ddev);
if (pm_runtime_suspended(dev))
return 0;
@@ -266,9 +273,11 @@ int dcss_dev_suspend(struct device *dev)
int dcss_dev_resume(struct device *dev)
{
struct dcss_dev *dcss = dcss_drv_dev_to_dcss(dev);
+ struct drm_device *ddev = dcss_drv_dev_to_drm(dev);
+ struct dcss_kms_dev *kms = container_of(ddev, struct dcss_kms_dev, base);
if (pm_runtime_suspended(dev)) {
- drm_mode_config_helper_resume(dcss_drv_dev_to_drm(dev));
+ drm_mode_config_helper_resume(ddev);
return 0;
}
@@ -278,7 +287,9 @@ int dcss_dev_resume(struct device *dev)
dcss_ctxld_resume(dcss->ctxld);
- drm_mode_config_helper_resume(dcss_drv_dev_to_drm(dev));
+ drm_mode_config_helper_resume(ddev);
+
+ drm_bridge_connector_enable_hpd(kms->connector);
return 0;
}
diff --git a/drivers/gpu/drm/imx/dcss/dcss-kms.c b/drivers/gpu/drm/imx/dcss/dcss-kms.c
index 3ca49d0a3e61..135a62366ab8 100644
--- a/drivers/gpu/drm/imx/dcss/dcss-kms.c
+++ b/drivers/gpu/drm/imx/dcss/dcss-kms.c
@@ -5,6 +5,7 @@
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
+#include <drm/drm_bridge_connector.h>
#include <drm/drm_drv.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_gem_cma_helper.h>
@@ -74,7 +75,7 @@ static const struct drm_encoder_funcs dcss_kms_simple_encoder_funcs = {
.destroy = drm_encoder_cleanup,
};
-static int dcss_kms_setup_encoder(struct dcss_kms_dev *kms)
+static int dcss_kms_bridge_connector_init(struct dcss_kms_dev *kms)
{
struct drm_device *ddev = &kms->base;
struct drm_encoder *encoder = &kms->encoder;
@@ -103,7 +104,23 @@ static int dcss_kms_setup_encoder(struct dcss_kms_dev *kms)
return ret;
}
- return drm_bridge_attach(encoder, bridge, NULL, 0);
+ ret = drm_bridge_attach(encoder, bridge, NULL,
+ DRM_BRIDGE_ATTACH_NO_CONNECTOR);
+ if (ret < 0) {
+ dev_err(ddev->dev, "Unable to attach bridge %pOF\n",
+ bridge->of_node);
+ return ret;
+ }
+
+ kms->connector = drm_bridge_connector_init(ddev, encoder);
+ if (IS_ERR(kms->connector)) {
+ dev_err(ddev->dev, "Unable to create bridge connector.\n");
+ return PTR_ERR(kms->connector);
+ }
+
+ drm_connector_attach_encoder(kms->connector, encoder);
+
+ return 0;
}
struct dcss_kms_dev *dcss_kms_attach(struct dcss_dev *dcss)
@@ -131,18 +148,20 @@ struct dcss_kms_dev *dcss_kms_attach(struct dcss_dev *dcss)
drm->irq_enabled = true;
- ret = dcss_crtc_init(crtc, drm);
+ ret = dcss_kms_bridge_connector_init(kms);
if (ret)
goto cleanup_mode_config;
- ret = dcss_kms_setup_encoder(kms);
+ ret = dcss_crtc_init(crtc, drm);
if (ret)
- goto cleanup_crtc;
+ goto cleanup_mode_config;
drm_mode_config_reset(drm);
drm_kms_helper_poll_init(drm);
+ drm_bridge_connector_enable_hpd(kms->connector);
+
ret = drm_dev_register(drm, 0);
if (ret)
goto cleanup_crtc;
@@ -152,6 +171,7 @@ struct dcss_kms_dev *dcss_kms_attach(struct dcss_dev *dcss)
return kms;
cleanup_crtc:
+ drm_bridge_connector_disable_hpd(kms->connector);
drm_kms_helper_poll_fini(drm);
dcss_crtc_deinit(crtc, drm);
@@ -167,6 +187,7 @@ void dcss_kms_detach(struct dcss_kms_dev *kms)
struct drm_device *drm = &kms->base;
drm_dev_unregister(drm);
+ drm_bridge_connector_disable_hpd(kms->connector);
drm_kms_helper_poll_fini(drm);
drm_atomic_helper_shutdown(drm);
drm_crtc_vblank_off(&kms->crtc.base);
diff --git a/drivers/gpu/drm/imx/dcss/dcss-kms.h b/drivers/gpu/drm/imx/dcss/dcss-kms.h
index 1f51c86c6986..dfe5dd99eea3 100644
--- a/drivers/gpu/drm/imx/dcss/dcss-kms.h
+++ b/drivers/gpu/drm/imx/dcss/dcss-kms.h
@@ -29,6 +29,7 @@ struct dcss_kms_dev {
struct drm_device base;
struct dcss_crtc crtc;
struct drm_encoder encoder;
+ struct drm_connector *connector;
};
struct dcss_kms_dev *dcss_kms_attach(struct dcss_dev *dcss);
--
2.23.0
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