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drm: kirin: Make driver_data variable non-global

Browse source 
As part of refactoring the kirin driver to better support
different hardware revisions, this patch changes the driver_data
value to not be a global variable. Instead the driver_data value
is accessed via the of_device_get_match_data() when needed.

Cc: Rongrong Zou <[email protected]>
Cc: Xinliang Liu <[email protected]>
Cc: David Airlie <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: dri-devel <[email protected]>
Cc: Sam Ravnborg <[email protected]>
Acked-by: Xinliang Liu <[email protected]>
Reviewed-by: Sam Ravnborg <[email protected]>
Signed-off-by: Xu YiPing <[email protected]>
[jstultz: Reworded commit message]
Signed-off-by: John Stultz <[email protected]>
Signed-off-by: Sam Ravnborg <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
This commit is contained in:
Xu YiPing 2019-08-20 23:06:23 +00:00 • committed by Sam Ravnborg
commit 27dd04a591
1 changed files with 24 additions and 19 deletions
Download patch file Download diff file Expand all files Collapse all files

43
drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
View file

@ -29,18 +29,9 @@
#include "kirin_drm_drv.h"
static struct kirin_drm_data *driver_data;
static int kirin_drm_kms_cleanup(struct drm_device *dev)
{
drm_kms_helper_poll_fini(dev);
driver_data->cleanup(to_platform_device(dev->dev));
drm_mode_config_cleanup(dev);
return 0;
}
static int kirin_drm_kms_init(struct drm_device *dev)
static int kirin_drm_kms_init(struct drm_device *dev,
const struct kirin_drm_data *driver_data)
{
int ret;
@ -96,6 +87,21 @@ static int compare_of(struct device *dev, void *data)
return dev->of_node == data;
}
static int kirin_drm_kms_cleanup(struct drm_device *dev)
{
const struct kirin_drm_data *driver_data;
drm_kms_helper_poll_fini(dev);
driver_data = of_device_get_match_data(dev->dev);
if (driver_data->cleanup)
driver_data->cleanup(to_platform_device(dev->dev));
drm_mode_config_cleanup(dev);
return 0;
}
static int kirin_drm_connectors_register(struct drm_device *dev)
{
struct drm_connector *connector;
@ -132,15 +138,21 @@ err:
static int kirin_drm_bind(struct device *dev)
{
struct kirin_drm_data *driver_data;
struct drm_device *drm_dev;
int ret;
driver_data = (struct kirin_drm_data *)of_device_get_match_data(dev);
if (!driver_data)
return -EINVAL;
drm_dev = drm_dev_alloc(driver_data->driver, dev);
if (IS_ERR(drm_dev))
return PTR_ERR(drm_dev);
dev_set_drvdata(dev, drm_dev);
ret = kirin_drm_kms_init(drm_dev);
/* display controller init */
ret = kirin_drm_kms_init(drm_dev, driver_data);
if (ret)
goto err_drm_dev_put;
@ -190,12 +202,6 @@ static int kirin_drm_platform_probe(struct platform_device *pdev)
struct component_match *match = NULL;
struct device_node *remote;
driver_data = (struct kirin_drm_data *)of_device_get_match_data(dev);
if (!driver_data) {
DRM_ERROR("failed to get dt id data\n");
return -EINVAL;
}
remote = of_graph_get_remote_node(np, 0, 0);
if (!remote)
return -ENODEV;
@ -209,7 +215,6 @@ static int kirin_drm_platform_probe(struct platform_device *pdev)
static int kirin_drm_platform_remove(struct platform_device *pdev)
{
component_master_del(&pdev->dev, &kirin_drm_ops);
driver_data = NULL;
return 0;
}