[PATCH i-g-t v2 01/14] lib/igt_kms: Rework connector properties to be more atomic, v2.

[Maarten Lankhorst <maarten.lankhorst@linux.intel.com>]

In the future I want to allow tests to commit more properties,
but for this to work I have to fix all properties to work better
with atomic commit. Instead of special casing each
property make a bitmask for all property changed flags, and try to
commit all properties.

Changs since v1:
- Mention which properties we set to what.
- Assert the property to be set is valid.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
---
 lib/igt_kms.c                    | 44 +++++++++++++++++++---------------------
 lib/igt_kms.h                    | 35 +++++++++++++++++++-------------
 tests/kms_atomic_interruptible.c |  4 ++--
 tests/kms_panel_fitting.c        |  2 +-
 4 files changed, 45 insertions(+), 40 deletions(-)

diff --git a/lib/igt_kms.c b/lib/igt_kms.c
index 379bd0c383fd..e6fa8f4af455 100644
--- a/lib/igt_kms.c
+++ b/lib/igt_kms.c
@@ -248,7 +248,7 @@ igt_atomic_fill_connector_props(igt_display_t *display, igt_output_t *output,
 			if (strcmp(prop->name, conn_prop_names[j]) != 0)
 				continue;
 
-			output->config.atomic_props_connector[j] = props->props[i];
+			output->props[j] = props->props[i];
 			break;
 		}
 
@@ -1834,7 +1834,7 @@ void igt_display_init(igt_display_t *display, int drm_fd)
 
 		igt_output_refresh(output);
 
-		output->config.pipe_changed = true;
+		igt_output_set_prop_changed(output, IGT_CONNECTOR_CRTC_ID);
 	}
 
 	drmModeFreePlaneResources(plane_resources);
@@ -2514,23 +2514,24 @@ static void igt_atomic_prepare_crtc_commit(igt_pipe_t *pipe_obj, drmModeAtomicRe
 static void igt_atomic_prepare_connector_commit(igt_output_t *output, drmModeAtomicReq *req)
 {
 
-	struct kmstest_connector_config *config = &output->config;
+	int i;
 
-	if (config->connector_scaling_mode_changed)
-		igt_atomic_populate_connector_req(req, output, IGT_CONNECTOR_SCALING_MODE, config->connector_scaling_mode);
+	for (i = 0; i < IGT_NUM_CONNECTOR_PROPS; i++) {
+		if (!igt_output_is_prop_changed(output, i))
+			continue;
 
-	if (config->pipe_changed) {
-		uint32_t crtc_id = 0;
+		/* it's an error to try an unsupported feature */
+		igt_assert(output->props[i]);
 
-		if (output->config.pipe != PIPE_NONE)
-			crtc_id = output->config.crtc->crtc_id;
+		igt_debug("%s: Setting property \"%s\" to 0x%"PRIx64"/%"PRIi64"\n",
+			  igt_output_name(output), igt_connector_prop_names[i],
+			  output->values[i], output->values[i]);
 
-		igt_atomic_populate_connector_req(req, output, IGT_CONNECTOR_CRTC_ID, crtc_id);
+		igt_assert_lt(0, drmModeAtomicAddProperty(req,
+					  output->config.connector->connector_id,
+					  output->props[i],
+					  output->values[i]));
 	}
-	/*
-	 *	TODO: Add all other connector level properties here
-	 */
-
 }
 
 /*
@@ -2625,11 +2626,10 @@ display_commit_changed(igt_display_t *display, enum igt_commit_style s)
 	for (i = 0; i < display->n_outputs; i++) {
 		igt_output_t *output = &display->outputs[i];
 
-		if (s != COMMIT_UNIVERSAL)
-			output->config.pipe_changed = false;
-
 		if (s == COMMIT_ATOMIC)
-			output->config.connector_scaling_mode_changed = false;
+			output->changed = 0;
+		else if (s != COMMIT_UNIVERSAL)
+			igt_output_clear_prop_changed(output, IGT_CONNECTOR_CRTC_ID);
 	}
 }
 
@@ -2873,18 +2873,16 @@ void igt_output_set_pipe(igt_output_t *output, enum pipe pipe)
 	if (pipe != PIPE_NONE)
 		display->pipes[pipe].mode_changed = true;
 
-	output->config.pipe_changed = true;
+	igt_output_set_prop_value(output, IGT_CONNECTOR_CRTC_ID, pipe == PIPE_NONE ? 0 : display->pipes[pipe].crtc_id);
 
 	igt_output_refresh(output);
 }
 
 void igt_output_set_scaling_mode(igt_output_t *output, uint64_t scaling_mode)
 {
-	output->config.connector_scaling_mode_changed = true;
-
-	output->config.connector_scaling_mode = scaling_mode;
+	igt_output_set_prop_value(output, IGT_CONNECTOR_SCALING_MODE, scaling_mode);
 
-	igt_require(output->config.atomic_props_connector[IGT_CONNECTOR_SCALING_MODE]);
+	igt_require(output->props[IGT_CONNECTOR_SCALING_MODE]);
 }
 
 igt_plane_t *igt_output_get_plane(igt_output_t *output, int plane_idx)
diff --git a/lib/igt_kms.h b/lib/igt_kms.h
index 8dc118c961b7..1ef10e7d525c 100644
--- a/lib/igt_kms.h
+++ b/lib/igt_kms.h
@@ -131,10 +131,7 @@ struct kmstest_connector_config {
 	drmModeConnector *connector;
 	drmModeEncoder *encoder;
 	drmModeModeInfo default_mode;
-	uint64_t connector_scaling_mode;
-	bool connector_scaling_mode_changed;
-	bool pipe_changed;
-	uint32_t atomic_props_connector[IGT_NUM_CONNECTOR_PROPS];
+
 	int pipe;
 	unsigned valid_crtc_idx_mask;
 };
@@ -364,6 +361,12 @@ typedef struct {
 	enum pipe pending_pipe;
 	bool use_override_mode;
 	drmModeModeInfo override_mode;
+
+	/* bitmask of changed properties */
+	uint64_t changed;
+
+	uint32_t props[IGT_NUM_CONNECTOR_PROPS];
+	uint64_t values[IGT_NUM_CONNECTOR_PROPS];
 } igt_output_t;
 
 struct igt_display {
@@ -545,16 +548,20 @@ static inline bool igt_output_is_connected(igt_output_t *output)
 #define igt_atomic_populate_crtc_req(req, pipe, prop, value) \
 	igt_assert_lt(0, drmModeAtomicAddProperty(req, pipe->crtc_id,\
 						  pipe->atomic_props_crtc[prop], value))
-/**
- * igt_atomic_populate_connector_req:
- * @req: A pointer to drmModeAtomicReq
- * @output: A pointer igt_output_t
- * @prop: one of igt_atomic_connector_properties
- * @value: the value to add
- */
-#define igt_atomic_populate_connector_req(req, output, prop, value) \
-	igt_assert_lt(0, drmModeAtomicAddProperty(req, output->config.connector->connector_id,\
-						  output->config.atomic_props_connector[prop], value))
+
+#define igt_output_is_prop_changed(output, prop) \
+	(!!((output)->changed & (1 << (prop))))
+#define igt_output_set_prop_changed(output, prop) \
+	(output)->changed |= 1 << (prop)
+
+#define igt_output_clear_prop_changed(output, prop) \
+	(output)->changed &= ~(1 << (prop))
+
+#define igt_output_set_prop_value(output, prop, value) \
+	do { \
+		(output)->values[prop] = (value); \
+		igt_output_set_prop_changed(output, prop); \
+	} while (0)
 
 /*
  * igt_pipe_refresh:
diff --git a/tests/kms_atomic_interruptible.c b/tests/kms_atomic_interruptible.c
index a9f9cb137776..dcdbc267d3ef 100644
--- a/tests/kms_atomic_interruptible.c
+++ b/tests/kms_atomic_interruptible.c
@@ -161,7 +161,7 @@ static void run_plane_test(igt_display_t *display, enum pipe pipe, igt_output_t
 					plane->pipe->atomic_props_crtc[IGT_CRTC_MODE_ID],
 					plane->pipe->atomic_props_crtc[IGT_CRTC_ACTIVE],
 					/* connector: 1 prop */
-					output->config.atomic_props_connector[IGT_CONNECTOR_CRTC_ID],
+					output->props[IGT_CONNECTOR_CRTC_ID],
 					/* plane: remainder props */
 					plane->atomic_props_plane[IGT_PLANE_CRTC_ID],
 					plane->atomic_props_plane[IGT_PLANE_FB_ID],
@@ -206,7 +206,7 @@ static void run_plane_test(igt_display_t *display, enum pipe pipe, igt_output_t
 			case test_legacy_dpms: {
 				struct drm_mode_connector_set_property prop = {
 					.value = DRM_MODE_DPMS_OFF,
-					.prop_id = output->config.atomic_props_connector[IGT_CONNECTOR_DPMS],
+					.prop_id = output->props[IGT_CONNECTOR_DPMS],
 					.connector_id = output->id,
 				};
 
diff --git a/tests/kms_panel_fitting.c b/tests/kms_panel_fitting.c
index 85a231e60ea2..e4ea355611c3 100644
--- a/tests/kms_panel_fitting.c
+++ b/tests/kms_panel_fitting.c
@@ -275,7 +275,7 @@ static void test_atomic_fastset(igt_display_t *display)
 	igt_require(intel_gen(intel_get_drm_devid(display->drm_fd)) >= 5);
 
 	for_each_pipe_with_valid_output(display, pipe, output) {
-		if (!output->config.atomic_props_connector[IGT_CONNECTOR_SCALING_MODE])
+		if (!output->props[IGT_CONNECTOR_SCALING_MODE])
 			continue;
 
 		test_panel_fitting_fastset(display, pipe, output);
-- 
2.14.1

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