Now that we have introduced some new infrastructure to compare state
instances, provide helpers for the default states.

Signed-off-by: Maxime Ripard <[email protected]>
---
 drivers/gpu/drm/drm_atomic_sro_helper.c | 240 ++++++++++++++++++++++++++++++++
 drivers/gpu/drm/drm_bridge.c            |  16 +++
 include/drm/drm_atomic_sro_helper.h     |  28 ++++
 3 files changed, 284 insertions(+)

diff --git a/drivers/gpu/drm/drm_atomic_sro_helper.c 
b/drivers/gpu/drm/drm_atomic_sro_helper.c
index f6d7d65103bb..c3dad449a287 100644
--- a/drivers/gpu/drm/drm_atomic_sro_helper.c
+++ b/drivers/gpu/drm/drm_atomic_sro_helper.c
@@ -5,10 +5,11 @@
 #include <drm/drm_atomic_sro_helper.h>
 #include <drm/drm_bridge.h>
 #include <drm/drm_connector.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_encoder.h>
+#include <drm/drm_framebuffer.h>
 #include <drm/drm_modeset_helper_vtables.h>
 #include <drm/drm_plane.h>
 #include <drm/drm_print.h>
 
 #include <linux/gfp.h>
@@ -403,10 +404,249 @@ int drm_atomic_helper_sro_readout_state(struct 
drm_device *dev)
 
        return 0;
 }
 EXPORT_SYMBOL(drm_atomic_helper_sro_readout_state);
 
+static bool drm_atomic_helper_fb_compare(struct drm_printer *p,
+                                        struct drm_framebuffer *expected,
+                                        struct drm_framebuffer *actual)
+{
+       unsigned int i;
+       bool ret = true;
+
+       STATE_CHECK_FORMAT_INFO(ret, p, "framebuffer", expected, actual, 
format);
+
+       for (i = 0; i < expected->format->num_planes; i++) {
+               STATE_CHECK_U32(ret, p, "framebuffer", expected, actual, 
pitches[i]);
+               STATE_CHECK_U32(ret, p, "framebuffer", expected, actual, 
offsets[i]);
+       }
+
+       STATE_CHECK_U64(ret, p, "framebuffer", expected, actual, modifier);
+       STATE_CHECK_U32(ret, p, "framebuffer", expected, actual, width);
+       STATE_CHECK_U32(ret, p, "framebuffer", expected, actual, height);
+       STATE_CHECK_S32_X(ret, p, "framebuffer", expected, actual, flags);
+
+       return ret;
+}
+
+/**
+ * drm_atomic_helper_plane_compare_state - default 
&drm_plane_funcs.atomic_sro_compare_state hook
+ * @plane: the plane being compared
+ * @p: printer for reporting mismatches
+ * @expected: the committed &struct drm_plane_state
+ * @actual: the &struct drm_plane_state read out from hardware
+ *
+ * Compares the base &struct drm_plane_state fields of @actual to
+ * @expected and reports any mismatches through @p. Drivers subclassing
+ * the plane state should call this first, then compare their own fields.
+ *
+ * RETURNS:
+ *
+ * True if the states are identical, false otherwise.
+ */
+bool drm_atomic_helper_plane_compare_state(struct drm_plane *plane,
+                                          struct drm_printer *p,
+                                          struct drm_plane_state *expected,
+                                          struct drm_plane_state *actual)
+{
+       bool ret = true;
+
+       STATE_CHECK_PTR(ret, p, plane->name, expected, actual, plane);
+       STATE_CHECK_PTR(ret, p, plane->name, expected, actual, crtc);
+
+       if (expected->fb && actual->fb) {
+               if (!drm_atomic_helper_fb_compare(p, expected->fb, actual->fb))
+                       ret = false;
+       } else if (!(!expected->fb && !actual->fb)) {
+               drm_atomic_helper_print_state_mismatch(p,
+                                                      plane->name,
+                                                      "fb",
+                                                      "expected framebuffer is 
%s, got %s",
+                                                      expected->fb ? 
"non-NULL" : "NULL",
+                                                      actual->fb ? "non-NULL" 
: "NULL");
+               ret = false;
+       }
+
+       STATE_CHECK_S32(ret, p, plane->name, expected, actual, crtc_x);
+       STATE_CHECK_S32(ret, p, plane->name, expected, actual, crtc_y);
+       STATE_CHECK_U32(ret, p, plane->name, expected, actual, crtc_w);
+       STATE_CHECK_U32(ret, p, plane->name, expected, actual, crtc_h);
+       STATE_CHECK_U32_16_16(ret, p, plane->name, expected, actual, src_x);
+       STATE_CHECK_U32_16_16(ret, p, plane->name, expected, actual, src_y);
+       STATE_CHECK_U32_16_16(ret, p, plane->name, expected, actual, src_w);
+       STATE_CHECK_U32_16_16(ret, p, plane->name, expected, actual, src_h);
+       STATE_CHECK_S32(ret, p, plane->name, expected, actual, hotspot_x);
+       STATE_CHECK_S32(ret, p, plane->name, expected, actual, hotspot_y);
+       STATE_CHECK_U16(ret, p, plane->name, expected, actual, alpha);
+       STATE_CHECK_U16(ret, p, plane->name, expected, actual, 
pixel_blend_mode);
+       STATE_CHECK_U32(ret, p, plane->name, expected, actual, rotation);
+       STATE_CHECK_U32(ret, p, plane->name, expected, actual, zpos);
+       STATE_CHECK_U32(ret, p, plane->name, expected, actual, normalized_zpos);
+       STATE_CHECK_U32(ret, p, plane->name, expected, actual, color_encoding);
+       STATE_CHECK_U32(ret, p, plane->name, expected, actual, color_range);
+
+       // TODO: damage clips
+
+       STATE_CHECK_BOOL(ret, p, plane->name, expected, actual, 
ignore_damage_clips);
+       STATE_CHECK_S32(ret, p, plane->name, expected, actual, src.x1);
+       STATE_CHECK_S32(ret, p, plane->name, expected, actual, src.x2);
+       STATE_CHECK_S32(ret, p, plane->name, expected, actual, src.y1);
+       STATE_CHECK_S32(ret, p, plane->name, expected, actual, src.y2);
+       STATE_CHECK_S32(ret, p, plane->name, expected, actual, dst.x1);
+       STATE_CHECK_S32(ret, p, plane->name, expected, actual, dst.x2);
+       STATE_CHECK_S32(ret, p, plane->name, expected, actual, dst.y1);
+       STATE_CHECK_S32(ret, p, plane->name, expected, actual, dst.y2);
+       STATE_CHECK_BOOL(ret, p, plane->name, expected, actual, visible);
+       STATE_CHECK_U32(ret, p, plane->name, expected, actual, scaling_filter);
+
+       return ret;
+}
+EXPORT_SYMBOL(drm_atomic_helper_plane_compare_state);
+
+/**
+ * drm_atomic_helper_crtc_compare_state - default 
&drm_crtc_funcs.atomic_sro_compare_state hook
+ * @crtc: the CRTC being compared
+ * @p: printer for reporting mismatches
+ * @expected: the committed &struct drm_crtc_state
+ * @actual: the &struct drm_crtc_state read out from hardware
+ *
+ * Compares the base &struct drm_crtc_state fields of @actual to
+ * @expected and reports any mismatches through @p. Drivers subclassing
+ * the CRTC state should call this first, then compare their own fields.
+ *
+ * RETURNS:
+ *
+ * True if the states are identical, false otherwise.
+ */
+bool drm_atomic_helper_crtc_compare_state(struct drm_crtc *crtc,
+                                         struct drm_printer *p,
+                                         struct drm_crtc_state *expected,
+                                         struct drm_crtc_state *actual)
+{
+       bool ret = true;
+
+       STATE_CHECK_PTR(ret, p, crtc->name, expected, actual, crtc);
+       STATE_CHECK_BOOL(ret, p, crtc->name, expected, actual, enable);
+       STATE_CHECK_BOOL(ret, p, crtc->name, expected, actual, active);
+       STATE_CHECK_BOOL(ret, p, crtc->name, expected, actual, no_vblank);
+       STATE_CHECK_U32(ret, p, crtc->name, expected, actual, plane_mask);
+       STATE_CHECK_U32(ret, p, crtc->name, expected, actual, connector_mask);
+       STATE_CHECK_U32(ret, p, crtc->name, expected, actual, encoder_mask);
+
+       STATE_CHECK_DISPLAY_MODE(ret, p, crtc->name, expected, actual, mode);
+       STATE_CHECK_DISPLAY_MODE(ret, p, crtc->name, expected, actual, 
adjusted_mode);
+       STATE_CHECK_PROPERTY_BLOB(ret, p, crtc->name, expected, actual, 
mode_blob);
+       STATE_CHECK_PROPERTY_BLOB(ret, p, crtc->name, expected, actual, 
degamma_lut);
+       STATE_CHECK_PROPERTY_BLOB(ret, p, crtc->name, expected, actual, ctm);
+       STATE_CHECK_PROPERTY_BLOB(ret, p, crtc->name, expected, actual, 
gamma_lut);
+       STATE_CHECK_BOOL(ret, p, crtc->name, expected, actual, vrr_enabled);
+       STATE_CHECK_BOOL(ret, p, crtc->name, expected, actual, 
self_refresh_active);
+       STATE_CHECK_U32(ret, p, crtc->name, expected, actual, scaling_filter);
+
+       return ret;
+}
+EXPORT_SYMBOL(drm_atomic_helper_crtc_compare_state);
+
+/**
+ * drm_atomic_helper_connector_compare_state - default 
&drm_connector_funcs.atomic_sro_compare_state hook
+ * @conn: the connector being compared
+ * @p: printer for reporting mismatches
+ * @expected: the committed &struct drm_connector_state
+ * @actual: the &struct drm_connector_state read out from hardware
+ *
+ * Compares the base &struct drm_connector_state fields of @actual to
+ * @expected and reports any mismatches through @p. Drivers subclassing
+ * the connector state should call this first, then compare their own
+ * fields.
+ *
+ * RETURNS:
+ *
+ * True if the states are identical, false otherwise.
+ */
+bool drm_atomic_helper_connector_compare_state(struct drm_connector *conn,
+                                              struct drm_printer *p,
+                                              struct drm_connector_state 
*expected,
+                                              struct drm_connector_state 
*actual)
+{
+       bool ret = true;
+
+       STATE_CHECK_PTR(ret, p, conn->name, expected, actual, connector);
+       STATE_CHECK_PTR(ret, p, conn->name, expected, actual, crtc);
+       STATE_CHECK_PTR(ret, p, conn->name, expected, actual, best_encoder);
+       STATE_CHECK_U32(ret, p, conn->name, expected, actual, link_status);
+
+       STATE_CHECK_U32(ret, p, conn->name, expected, actual, 
tv.select_subconnector);
+       STATE_CHECK_U32(ret, p, conn->name, expected, actual, tv.subconnector);
+
+       STATE_CHECK_BOOL(ret, p, conn->name, expected, actual, 
self_refresh_aware);
+       STATE_CHECK_U32(ret, p, conn->name, expected, actual, 
picture_aspect_ratio);
+       STATE_CHECK_U32(ret, p, conn->name, expected, actual, content_type);
+       STATE_CHECK_U32(ret, p, conn->name, expected, actual, 
hdcp_content_type);
+       STATE_CHECK_U32(ret, p, conn->name, expected, actual, scaling_mode);
+       STATE_CHECK_U32(ret, p, conn->name, expected, actual, 
content_protection);
+       STATE_CHECK_U32(ret, p, conn->name, expected, actual, colorspace);
+
+       /*
+        * NOTE: We can't check max_bpc and max_requested_bpc because it
+        * will typically come from userspace and we can't read it out
+        * from the hardware.
+        */
+
+       STATE_CHECK_U32(ret, p, conn->name, expected, actual, 
privacy_screen_sw_state);
+       STATE_CHECK_PROPERTY_BLOB(ret, p, conn->name, expected, actual, 
hdr_output_metadata);
+
+       STATE_CHECK_U32(ret, p, conn->name, expected, actual, 
hdmi.broadcast_rgb);
+       STATE_CHECK_BOOL(ret, p, conn->name, expected, actual, 
hdmi.infoframes.avi.set);
+       STATE_CHECK_INFOFRAME(ret, p, conn->name, expected, actual, 
hdmi.infoframes.avi.data);
+       STATE_CHECK_BOOL(ret, p, conn->name, expected, actual, 
hdmi.infoframes.hdr_drm.set);
+       STATE_CHECK_INFOFRAME(ret, p, conn->name, expected, actual, 
hdmi.infoframes.hdr_drm.data);
+       STATE_CHECK_BOOL(ret, p, conn->name, expected, actual, 
hdmi.infoframes.spd.set);
+       STATE_CHECK_INFOFRAME(ret, p, conn->name, expected, actual, 
hdmi.infoframes.spd.data);
+       STATE_CHECK_BOOL(ret, p, conn->name, expected, actual, 
hdmi.infoframes.hdmi.set);
+       STATE_CHECK_INFOFRAME(ret, p, conn->name, expected, actual, 
hdmi.infoframes.hdmi.data);
+       STATE_CHECK_BOOL(ret, p, conn->name, expected, actual, 
hdmi.is_limited_range);
+       STATE_CHECK_U32(ret, p, conn->name, expected, actual, hdmi.output_bpc);
+       STATE_CHECK_U32(ret, p, conn->name, expected, actual, 
hdmi.output_format);
+       STATE_CHECK_U64(ret, p, conn->name, expected, actual, 
hdmi.tmds_char_rate);
+
+       return ret;
+}
+EXPORT_SYMBOL(drm_atomic_helper_connector_compare_state);
+
+/**
+ * drm_atomic_helper_bridge_compare_state - default 
&drm_bridge_funcs.atomic_sro_compare_state hook
+ * @bridge: the bridge being compared
+ * @p: printer for reporting mismatches
+ * @expected: the committed &struct drm_bridge_state
+ * @actual: the &struct drm_bridge_state read out from hardware
+ *
+ * Compares the base &struct drm_bridge_state fields of @actual to
+ * @expected and reports any mismatches through @p. Drivers subclassing
+ * the bridge state should call this first, then compare their own
+ * fields.
+ *
+ * RETURNS:
+ *
+ * True if the states are identical, false otherwise.
+ */
+bool drm_atomic_helper_bridge_compare_state(struct drm_bridge *bridge,
+                                           struct drm_printer *p,
+                                           struct drm_bridge_state *expected,
+                                           struct drm_bridge_state *actual)
+{
+       bool ret = true;
+
+       STATE_CHECK_PTR(ret, p, bridge->name, expected, actual, bridge);
+       STATE_CHECK_U32_X(ret, p, bridge->name, expected, actual, 
input_bus_cfg.format);
+       STATE_CHECK_U32_X(ret, p, bridge->name, expected, actual, 
input_bus_cfg.flags);
+       STATE_CHECK_U32_X(ret, p, bridge->name, expected, actual, 
output_bus_cfg.format);
+       STATE_CHECK_U32_X(ret, p, bridge->name, expected, actual, 
output_bus_cfg.flags);
+
+       return ret;
+}
+EXPORT_SYMBOL(drm_atomic_helper_bridge_compare_state);
+
 /**
  * drm_atomic_helper_print_state_mismatch - report a state comparison mismatch
  * @p: printer to report through
  * @name: human-readable name of the object (e.g. plane or CRTC name)
  * @field: name of the mismatching field
diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index dbf21508fd37..fc7eb126b98d 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -605,10 +605,25 @@ drm_bridge_atomic_readout_priv_state(struct 
drm_private_obj *obj,
        }
 
        return 0;
 }
 
+static bool drm_bridge_atomic_compare_priv_state(struct drm_private_obj *obj,
+                                                struct drm_printer *p,
+                                                struct drm_private_state *a,
+                                                struct drm_private_state *b)
+{
+       struct drm_bridge *bridge = drm_priv_to_bridge(obj);
+       struct drm_bridge_state *state_a = drm_priv_to_bridge_state(a);
+       struct drm_bridge_state *state_b = drm_priv_to_bridge_state(b);
+
+       if (bridge->funcs->atomic_sro_compare_state)
+               return bridge->funcs->atomic_sro_compare_state(bridge, p, 
state_a, state_b);
+       else
+               return false;
+}
+
 static void
 drm_bridge_atomic_print_priv_state(struct drm_printer *p,
                                   const struct drm_private_state *s)
 {
        const struct drm_bridge_state *state = drm_priv_to_bridge_state(s);
@@ -633,10 +648,11 @@ static const struct drm_private_state_funcs 
drm_bridge_priv_state_funcs = {
        .atomic_destroy_state = drm_bridge_atomic_destroy_priv_state,
        .atomic_print_state = drm_bridge_atomic_print_priv_state,
 };
 
 static const struct drm_private_state_funcs 
drm_bridge_priv_state_funcs_with_sro = {
+       .atomic_sro_compare_state = drm_bridge_atomic_compare_priv_state,
        .atomic_sro_readout_state = drm_bridge_atomic_readout_priv_state,
        .atomic_create_state = drm_bridge_atomic_create_priv_state,
        .atomic_duplicate_state = drm_bridge_atomic_duplicate_priv_state,
        .atomic_destroy_state = drm_bridge_atomic_destroy_priv_state,
        .atomic_print_state = drm_bridge_atomic_print_priv_state,
diff --git a/include/drm/drm_atomic_sro_helper.h 
b/include/drm/drm_atomic_sro_helper.h
index db5d62ac0db9..e7bc4816c743 100644
--- a/include/drm/drm_atomic_sro_helper.h
+++ b/include/drm/drm_atomic_sro_helper.h
@@ -4,11 +4,19 @@
 #define DRM_ATOMIC_SRO_HELPER_H_
 
 #include <linux/string_choices.h>
 
 struct drm_atomic_sro_state;
+struct drm_bridge;
+struct drm_bridge_state;
+struct drm_connector;
+struct drm_connector_state;
+struct drm_crtc;
+struct drm_crtc_state;
 struct drm_device;
+struct drm_plane;
+struct drm_plane_state;
 struct drm_printer;
 
 int
 drm_atomic_helper_sro_readout_planes_state(struct drm_device *dev,
                                           struct drm_atomic_sro_state *state);
@@ -26,10 +34,30 @@ drm_atomic_helper_sro_readout_private_objs_state(struct 
drm_device *dev,
                                                 struct drm_atomic_sro_state 
*state);
 struct drm_atomic_sro_state *
 drm_atomic_helper_sro_build_state(struct drm_device *dev);
 int drm_atomic_helper_sro_readout_state(struct drm_device *dev);
 
+bool drm_atomic_helper_connector_compare_state(struct drm_connector *connector,
+                                              struct drm_printer *p,
+                                              struct drm_connector_state 
*expected,
+                                              struct drm_connector_state 
*actual);
+
+bool drm_atomic_helper_crtc_compare_state(struct drm_crtc *crtc,
+                                         struct drm_printer *p,
+                                         struct drm_crtc_state *expected,
+                                         struct drm_crtc_state *actual);
+
+bool drm_atomic_helper_plane_compare_state(struct drm_plane *plane,
+                                          struct drm_printer *p,
+                                          struct drm_plane_state *expected,
+                                          struct drm_plane_state *actual);
+
+bool drm_atomic_helper_bridge_compare_state(struct drm_bridge *bridge,
+                                           struct drm_printer *p,
+                                           struct drm_bridge_state *expected,
+                                           struct drm_bridge_state *actual);
+
 void __printf(4, 5)
 drm_atomic_helper_print_state_mismatch(struct drm_printer *p,
                                       const char *name,
                                       const char *field,
                                       const char *format, ...);

-- 
2.54.0

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