From eca22edb37d29f29306fab6e6b59fe92c633960b Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Wed, 18 Nov 2020 10:47:58 +0100
Subject: drm: Pass the full state to connectors atomic functions
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The current atomic helpers have either their object state being passed as
an argument or the full atomic state.

The former is the pattern that was done at first, before switching to the
latter for new hooks or when it was needed.

Now that the CRTCs have been converted, let's move forward with the
connectors to provide a consistent interface.

The conversion was done using the coccinelle script below, and built tested
on all the drivers.

@@
identifier connector, connector_state;
@@

 struct drm_connector_helper_funcs {
	...
	struct drm_encoder* (*atomic_best_encoder)(struct drm_connector *connector,
-						   struct drm_connector_state *connector_state);
+						   struct drm_atomic_state *state);
	...
}

@@
identifier connector, connector_state;
@@

 struct drm_connector_helper_funcs {
	...
	void (*atomic_commit)(struct drm_connector *connector,
-			      struct drm_connector_state *connector_state);
+			      struct drm_atomic_state *state);
	...
}

@@
struct drm_connector_helper_funcs *FUNCS;
identifier state;
identifier connector, connector_state;
identifier f;
@@

 f(..., struct drm_atomic_state *state, ...)
 {
	<+...
-	FUNCS->atomic_commit(connector, connector_state);
+	FUNCS->atomic_commit(connector, state);
	...+>
 }

@@
struct drm_connector_helper_funcs *FUNCS;
identifier state;
identifier connector, connector_state;
identifier var, f;
@@

 f(struct drm_atomic_state *state, ...)
 {
	<+...
-	var = FUNCS->atomic_best_encoder(connector, connector_state);
+	var = FUNCS->atomic_best_encoder(connector, state);
	...+>
 }

@ connector_atomic_func @
identifier helpers;
identifier func;
@@

(
static struct drm_connector_helper_funcs helpers = {
	...,
	.atomic_best_encoder = func,
	...,
};
|
static struct drm_connector_helper_funcs helpers = {
	...,
	.atomic_commit = func,
	...,
};
)

@@
identifier connector_atomic_func.func;
identifier connector;
symbol state;
@@

 func(struct drm_connector *connector,
-      struct drm_connector_state *state
+      struct drm_connector_state *connector_state
      )
 {
	...
-	state
+	connector_state
 	...
 }

@ ignores_state @
identifier connector_atomic_func.func;
identifier connector, connector_state;
@@

 func(struct drm_connector *connector,
      struct drm_connector_state *connector_state)
{
	... when != connector_state
}

@ adds_state depends on connector_atomic_func && !ignores_state @
identifier connector_atomic_func.func;
identifier connector, connector_state;
@@

 func(struct drm_connector *connector, struct drm_connector_state *connector_state)
 {
+	struct drm_connector_state *connector_state = drm_atomic_get_new_connector_state(state, connector);
	...
 }

@ depends on connector_atomic_func @
identifier connector_atomic_func.func;
identifier connector_state;
identifier connector;
@@

 func(struct drm_connector *connector,
-     struct drm_connector_state *connector_state
+     struct drm_atomic_state *state
	   )
 { ... }

@ include depends on adds_state @
@@

 #include <drm/drm_atomic.h>

@ no_include depends on !include && adds_state @
@@

+ #include <drm/drm_atomic.h>
  #include <drm/...>

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Cc: Melissa Wen <melissa.srw@gmail.com>
Cc: Haneen Mohammed <hamohammed.sa@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201118094758.506730-1-maxime@cerno.tech
---
 drivers/gpu/drm/vkms/vkms_writeback.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'drivers/gpu/drm/vkms/vkms_writeback.c')

diff --git a/drivers/gpu/drm/vkms/vkms_writeback.c b/drivers/gpu/drm/vkms/vkms_writeback.c
index 67f80ab1e85f..78fdc1d59186 100644
--- a/drivers/gpu/drm/vkms/vkms_writeback.c
+++ b/drivers/gpu/drm/vkms/vkms_writeback.c
@@ -2,6 +2,7 @@
 
 #include <linux/dma-buf-map.h>
 
+#include <drm/drm_atomic.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_writeback.h>
 #include <drm/drm_probe_helper.h>
@@ -105,8 +106,10 @@ static void vkms_wb_cleanup_job(struct drm_writeback_connector *connector,
 }
 
 static void vkms_wb_atomic_commit(struct drm_connector *conn,
-				  struct drm_connector_state *state)
+				  struct drm_atomic_state *state)
 {
+	struct drm_connector_state *connector_state = drm_atomic_get_new_connector_state(state,
+											 conn);
 	struct vkms_device *vkmsdev = drm_device_to_vkms_device(conn->dev);
 	struct vkms_output *output = &vkmsdev->output;
 	struct drm_writeback_connector *wb_conn = &output->wb_connector;
@@ -122,7 +125,7 @@ static void vkms_wb_atomic_commit(struct drm_connector *conn,
 	crtc_state->active_writeback = conn_state->writeback_job->priv;
 	crtc_state->wb_pending = true;
 	spin_unlock_irq(&output->composer_lock);
-	drm_writeback_queue_job(wb_conn, state);
+	drm_writeback_queue_job(wb_conn, connector_state);
 }
 
 static const struct drm_connector_helper_funcs vkms_wb_conn_helper_funcs = {
-- 
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