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Subject[PATCH 19/25] drm: kirin: Add register connect helper functions in drm init
Date
From: Xu YiPing <xuyiping@hisilicon.com>

As part of refactoring the kirin driver to better support
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: Xinliang Liu <z.liuxinliang@hisilicon.com>
Cc: Rongrong Zou <zourongrong@gmail.com>
Cc: Xinwei Kong <kong.kongxinwei@hisilicon.com>
Cc: Chen Feng <puck.chen@hisilicon.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel <dri-devel@lists.freedesktop.org>
Signed-off-by: Xu YiPing <xuyiping@hisilicon.com>
[jstultz: reworded commit message]
Signed-off-by: John Stultz <john.stultz@linaro.org>
---
drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c | 1 +
drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c | 43 +++++++++++++++++++++++++
drivers/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 bdd1b00..fcc01c2 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
@@ -1076,6 +1076,7 @@ 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 c987b4e..5ee90d7 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
@@ -99,6 +99,40 @@ 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;
@@ -118,8 +152,17 @@ 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 == true) {
+ 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 61fb0da..8818ccf 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
@@ -43,6 +43,7 @@ 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;

--
2.7.4
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