[PATCH v5 19/25] drm: kirin: Add register connect helper functions in drm init

John Stultz
2019-08-20T23:07:29Z

different hardware revisions, this patch adds a flag to the
device specific driver data so that we can conditionally
register the connectors at init.

Cc: Rongrong Zou <zourongrong@gmail.com>
Cc: Xinliang Liu <z.liuxinliang@hisilicon.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel <dri-devel@lists.freedesktop.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Xinliang Liu <z.liuxinliang@hisilicon.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Xu YiPing <xuyiping@hisilicon.com>
[jstultz: reworded commit message]
Signed-off-by: John Stultz <john.stultz@linaro.org>
---
v5: checkpatch --strict whitespace fixups noticed by Sam
---
.../gpu/drm/hisilicon/kirin/kirin_drm_ade.c | 1 +
.../gpu/drm/hisilicon/kirin/kirin_drm_drv.c | 43 +++++++++++++++++++
.../gpu/drm/hisilicon/kirin/kirin_drm_drv.h | 1 +
3 files changed, 45 insertions(+)

diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
index 21c5d457a97d..89bdc0388138 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
@@ -1073,6 +1073,7 @@ static struct drm_driver ade_driver = {
};

struct kirin_drm_data ade_driver_data = {
+ .register_connects = false,
.num_planes = ADE_CH_NUM,
.prim_plane = ADE_CH1,
.channel_formats = channel_formats,
diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
index c9faaa848cc6..68de8838da3c 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
@@ -98,6 +98,40 @@ static int compare_of(struct device *dev, void *data)
return dev->of_node == data;
}

+static int kirin_drm_connectors_register(struct drm_device *dev)
+{
+ struct drm_connector *connector;
+ struct drm_connector *failed_connector;
+ struct drm_connector_list_iter conn_iter;
+ int ret;
+
+ mutex_lock(&dev->mode_config.mutex);
+ drm_connector_list_iter_begin(dev, &conn_iter);
+ drm_for_each_connector_iter(connector, &conn_iter) {
+ ret = drm_connector_register(connector);
+ if (ret) {
+ failed_connector = connector;
+ goto err;
+ }
+ }
+ drm_connector_list_iter_end(&conn_iter);
+ mutex_unlock(&dev->mode_config.mutex);
+
+ return 0;
+
+err:
+ drm_connector_list_iter_begin(dev, &conn_iter);
+ drm_for_each_connector_iter(connector, &conn_iter) {
+ if (failed_connector == connector)
+ break;
+ drm_connector_unregister(connector);
+ }
+ drm_connector_list_iter_end(&conn_iter);
+ mutex_unlock(&dev->mode_config.mutex);
+
+ return ret;
+}
+
static int kirin_drm_bind(struct device *dev)
{
struct drm_device *drm_dev;
@@ -117,8 +151,17 @@ static int kirin_drm_bind(struct device *dev)

drm_fbdev_generic_setup(drm_dev, 32);

+ /* connectors should be registered after drm device register */
+ if (driver_data->register_connects) {
+ ret = kirin_drm_connectors_register(drm_dev);
+ if (ret)
+ goto err_drm_dev_unregister;
+ }
+
return 0;

+err_drm_dev_unregister:
+ drm_dev_unregister(drm_dev);
err_kms_cleanup:
kirin_drm_kms_cleanup(drm_dev);
err_drm_dev_put:
diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
index fdbfc4a90f22..95f56c9960d5 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
@@ -39,6 +39,7 @@ struct kirin_drm_data {
u32 channel_formats_cnt;
int config_max_width;
int config_max_height;
+ bool register_connects;
u32 num_planes;
u32 prim_plane;

--
2.17.1