[PATCH v2 1/6] drm: add writeback pointers to drm_connector
Kandpal Suraj
suraj.kandpal at intel.com
Wed Feb 2 08:16:57 UTC 2022
Changing drm_connector and drm_encoder feilds to pointers in
drm_writeback_connector as the elements of struct
drm_writeback_connector are:
struct drm_writeback_connector {
struct drm_connector base;
struct drm_encoder encoder;
Similarly the elements of intel_encoder and intel_connector
are:
struct intel_encoder {
struct drm_encoder base;
struct intel_connector {
struct drm_connector base;
The function drm_writeback_connector_init() will initialize the
drm_connector and drm_encoder and attach them as well.
Since the drm_connector/encoder are both struct in
drm_writeback_connector and intel_connector/encoder, we need
one of them to be a pointer so we can reference them or else we
will be pointing to 2 seprate instances.
Usually the struct defined in drm framework pointing to any
struct will be pointer and allocating them and initialization
will be done with the users.
Like struct drm_connector and drm_encoder are part of drm
framework and the users of these such as i915 have included them
in their struct intel_connector and intel_encoder. Likewise
struct drm_writeback_connector is a special connector and hence
is not a user of drm_connector and hence this should be pointers.
Adding drm_writeback_connector to drm_connector so that
writeback_connector can be fetched from drm_connector as the previous
container_of method won't work due to change in the feilds of
drm_connector and drm_encoder in drm_writeback_connector.
Note:The corresponding ripple effect due to the above changes namely in
two drivers as I can see it komeda and vkms have been dealt with in the
upcoming patches of this series.
Signed-off-by: Kandpal Suraj <suraj.kandpal at intel.com>
---
drivers/gpu/drm/drm_writeback.c | 19 ++++++++++---------
include/drm/drm_connector.h | 3 +++
include/drm/drm_writeback.h | 6 +++---
3 files changed, 16 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/drm_writeback.c b/drivers/gpu/drm/drm_writeback.c
index dccf4504f1bb..47238db42363 100644
--- a/drivers/gpu/drm/drm_writeback.c
+++ b/drivers/gpu/drm/drm_writeback.c
@@ -87,7 +87,7 @@ static const char *drm_writeback_fence_get_driver_name(struct dma_fence *fence)
struct drm_writeback_connector *wb_connector =
fence_to_wb_connector(fence);
- return wb_connector->base.dev->driver->name;
+ return wb_connector->base->dev->driver->name;
}
static const char *
@@ -177,7 +177,7 @@ int drm_writeback_connector_init(struct drm_device *dev,
const u32 *formats, int n_formats)
{
struct drm_property_blob *blob;
- struct drm_connector *connector = &wb_connector->base;
+ struct drm_connector *connector = wb_connector->base;
struct drm_mode_config *config = &dev->mode_config;
int ret = create_writeback_properties(dev);
@@ -189,14 +189,15 @@ int drm_writeback_connector_init(struct drm_device *dev,
if (IS_ERR(blob))
return PTR_ERR(blob);
- drm_encoder_helper_add(&wb_connector->encoder, enc_helper_funcs);
- ret = drm_encoder_init(dev, &wb_connector->encoder,
+ drm_encoder_helper_add(wb_connector->encoder, enc_helper_funcs);
+ ret = drm_encoder_init(dev, wb_connector->encoder,
&drm_writeback_encoder_funcs,
DRM_MODE_ENCODER_VIRTUAL, NULL);
if (ret)
goto fail;
connector->interlace_allowed = 0;
+ connector->wb_connector = wb_connector;
ret = drm_connector_init(dev, connector, con_funcs,
DRM_MODE_CONNECTOR_WRITEBACK);
@@ -204,7 +205,7 @@ int drm_writeback_connector_init(struct drm_device *dev,
goto connector_fail;
ret = drm_connector_attach_encoder(connector,
- &wb_connector->encoder);
+ wb_connector->encoder);
if (ret)
goto attach_fail;
@@ -233,7 +234,7 @@ int drm_writeback_connector_init(struct drm_device *dev,
attach_fail:
drm_connector_cleanup(connector);
connector_fail:
- drm_encoder_cleanup(&wb_connector->encoder);
+ drm_encoder_cleanup(wb_connector->encoder);
fail:
drm_property_blob_put(blob);
return ret;
@@ -263,7 +264,7 @@ int drm_writeback_prepare_job(struct drm_writeback_job *job)
{
struct drm_writeback_connector *connector = job->connector;
const struct drm_connector_helper_funcs *funcs =
- connector->base.helper_private;
+ connector->base->helper_private;
int ret;
if (funcs->prepare_writeback_job) {
@@ -315,7 +316,7 @@ void drm_writeback_cleanup_job(struct drm_writeback_job *job)
{
struct drm_writeback_connector *connector = job->connector;
const struct drm_connector_helper_funcs *funcs =
- connector->base.helper_private;
+ connector->base->helper_private;
if (job->prepared && funcs->cleanup_writeback_job)
funcs->cleanup_writeback_job(connector, job);
@@ -401,7 +402,7 @@ drm_writeback_get_out_fence(struct drm_writeback_connector *wb_connector)
{
struct dma_fence *fence;
- if (WARN_ON(wb_connector->base.connector_type !=
+ if (WARN_ON(wb_connector->base->connector_type !=
DRM_MODE_CONNECTOR_WRITEBACK))
return NULL;
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 64cf5f88c05b..fa06faeb7844 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -44,6 +44,7 @@ struct drm_printer;
struct drm_privacy_screen;
struct edid;
struct i2c_adapter;
+struct drm_writeback_connector;
enum drm_connector_force {
DRM_FORCE_UNSPECIFIED,
@@ -1539,6 +1540,8 @@ struct drm_connector {
*/
struct drm_encoder *encoder;
+ struct drm_writeback_connector *wb_connector;
+
#define MAX_ELD_BYTES 128
/** @eld: EDID-like data, if present */
uint8_t eld[MAX_ELD_BYTES];
diff --git a/include/drm/drm_writeback.h b/include/drm/drm_writeback.h
index 9697d2714d2a..078c9907219c 100644
--- a/include/drm/drm_writeback.h
+++ b/include/drm/drm_writeback.h
@@ -22,7 +22,7 @@ struct drm_writeback_connector {
/**
* @base: base drm_connector object
*/
- struct drm_connector base;
+ struct drm_connector *base;
/**
* @encoder: Internal encoder used by the connector to fulfill
@@ -31,7 +31,7 @@ struct drm_writeback_connector {
* by passing the @enc_funcs parameter to drm_writeback_connector_init()
* function.
*/
- struct drm_encoder encoder;
+ struct drm_encoder *encoder;
/**
* @pixel_formats_blob_ptr:
@@ -143,7 +143,7 @@ struct drm_writeback_job {
static inline struct drm_writeback_connector *
drm_connector_to_writeback(struct drm_connector *connector)
{
- return container_of(connector, struct drm_writeback_connector, base);
+ return connector->wb_connector;
}
int drm_writeback_connector_init(struct drm_device *dev,
--
2.17.1
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