Add a list of possible CRTCs to the plane configuration and helpers to
attach, detach and get the primary and cursor planes attached to a CRTC.
Now that the default configuration has its planes and CRTC correctly
attached, configure the output following the configuration.
Co-developed-by: Louis Chauvet <louis.chauvet@xxxxxxxxxxx>
Signed-off-by: Louis Chauvet <louis.chauvet@xxxxxxxxxxx>
Signed-off-by: José Expósito <jose.exposito89@xxxxxxxxx>
---
.clang-format | 1 +
drivers/gpu/drm/vkms/tests/vkms_config_test.c | 188 ++++++++++++++++++
drivers/gpu/drm/vkms/vkms_config.c | 147 ++++++++++++--
drivers/gpu/drm/vkms/vkms_config.h | 59 +++++-
drivers/gpu/drm/vkms/vkms_output.c | 51 +++--
5 files changed, 411 insertions(+), 35 deletions(-)
diff --git a/.clang-format b/.clang-format
index e7a901c3617d..6f944fa39841 100644
--- a/.clang-format
+++ b/.clang-format
@@ -692,6 +692,7 @@ ForEachMacros:
- 'virtio_device_for_each_vq'
- 'vkms_config_for_each_crtc'
- 'vkms_config_for_each_plane'
+ - 'vkms_config_plane_for_each_possible_crtc'
- 'while_for_each_ftrace_op'
- 'xa_for_each'
- 'xa_for_each_marked'
diff --git a/drivers/gpu/drm/vkms/tests/vkms_config_test.c b/drivers/gpu/drm/vkms/tests/vkms_config_test.c
index 59bd7baea923..505eebb07a52 100644
--- a/drivers/gpu/drm/vkms/tests/vkms_config_test.c
+++ b/drivers/gpu/drm/vkms/tests/vkms_config_test.c
@@ -87,6 +87,18 @@ static void vkms_config_test_default_config(struct kunit *test)
KUNIT_EXPECT_EQ(test, vkms_config_crtc_get_writeback(crtc_cfg),
params->enable_writeback);
+ list_for_each_entry(plane_cfg, &config->planes, link) {
+ struct vkms_config_crtc *possible_crtc;
+ int n_possible_crtcs = 0;
+ unsigned long idx = 0;
+
+ xa_for_each(&plane_cfg->possible_crtcs, idx, possible_crtc) {
+ KUNIT_EXPECT_PTR_EQ(test, crtc_cfg, possible_crtc);
+ n_possible_crtcs++;
+ }
+ KUNIT_EXPECT_EQ(test, n_possible_crtcs, 1);
+ }
+
KUNIT_EXPECT_TRUE(test, vkms_config_is_valid(config));
vkms_config_destroy(config);
@@ -199,6 +211,8 @@ static void vkms_config_test_valid_plane_type(struct kunit *test)
{
struct vkms_config *config;
struct vkms_config_plane *plane_cfg;
+ struct vkms_config_crtc *crtc_cfg;
+ int err;
config = vkms_config_default_create(false, false, false);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, config);
@@ -206,16 +220,26 @@ static void vkms_config_test_valid_plane_type(struct kunit *test)
plane_cfg = list_first_entry(&config->planes, typeof(*plane_cfg), link);
vkms_config_destroy_plane(plane_cfg);
+ crtc_cfg = list_first_entry(&config->crtcs, typeof(*crtc_cfg), link);
+
/* Invalid: No primary plane */
plane_cfg = vkms_config_create_plane(config);
vkms_config_plane_set_type(plane_cfg, DRM_PLANE_TYPE_OVERLAY);
+ err = vkms_config_plane_attach_crtc(plane_cfg, crtc_cfg);
+ KUNIT_EXPECT_EQ(test, err, 0);
KUNIT_EXPECT_FALSE(test, vkms_config_is_valid(config));
/* Invalid: Multiple primary planes */
plane_cfg = vkms_config_create_plane(config);
vkms_config_plane_set_type(plane_cfg, DRM_PLANE_TYPE_PRIMARY);
+ err = vkms_config_plane_attach_crtc(plane_cfg, crtc_cfg);
+ KUNIT_EXPECT_EQ(test, err, 0);
+
plane_cfg = vkms_config_create_plane(config);
vkms_config_plane_set_type(plane_cfg, DRM_PLANE_TYPE_PRIMARY);
+ err = vkms_config_plane_attach_crtc(plane_cfg, crtc_cfg);
+ KUNIT_EXPECT_EQ(test, err, 0);
+
KUNIT_EXPECT_FALSE(test, vkms_config_is_valid(config));
/* Valid: One primary plane */
@@ -225,14 +249,50 @@ static void vkms_config_test_valid_plane_type(struct kunit *test)
/* Invalid: Multiple cursor planes */
plane_cfg = vkms_config_create_plane(config);
vkms_config_plane_set_type(plane_cfg, DRM_PLANE_TYPE_CURSOR);
+ err = vkms_config_plane_attach_crtc(plane_cfg, crtc_cfg);
+ KUNIT_EXPECT_EQ(test, err, 0);
+
plane_cfg = vkms_config_create_plane(config);
vkms_config_plane_set_type(plane_cfg, DRM_PLANE_TYPE_CURSOR);
+ err = vkms_config_plane_attach_crtc(plane_cfg, crtc_cfg);
+ KUNIT_EXPECT_EQ(test, err, 0);
+
KUNIT_EXPECT_FALSE(test, vkms_config_is_valid(config));
/* Valid: One primary and one cursor plane */
vkms_config_destroy_plane(plane_cfg);
KUNIT_EXPECT_TRUE(test, vkms_config_is_valid(config));
+ /* Invalid: Second CRTC without primary plane */
+ crtc_cfg = vkms_config_create_crtc(config);
+ KUNIT_EXPECT_FALSE(test, vkms_config_is_valid(config));
+
+ /* Valid: Second CRTC with a primary plane */
+ plane_cfg = vkms_config_create_plane(config);
+ vkms_config_plane_set_type(plane_cfg, DRM_PLANE_TYPE_PRIMARY);
+ err = vkms_config_plane_attach_crtc(plane_cfg, crtc_cfg);
+ KUNIT_EXPECT_EQ(test, err, 0);
+ KUNIT_EXPECT_TRUE(test, vkms_config_is_valid(config));
+
+ vkms_config_destroy(config);
+}
+
+static void vkms_config_test_valid_plane_possible_crtcs(struct kunit *test)
+{
+ struct vkms_config *config;
+ struct vkms_config_plane *plane_cfg;
+ struct vkms_config_crtc *crtc_cfg;
+
+ config = vkms_config_default_create(false, false, false);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, config);
+
+ plane_cfg = list_first_entry(&config->planes, typeof(*plane_cfg), link);
+ crtc_cfg = list_first_entry(&config->crtcs, typeof(*crtc_cfg), link);
+
+ /* Invalid: Primary plane without a possible CRTC */
+ vkms_config_plane_detach_crtc(plane_cfg, crtc_cfg);
+ KUNIT_EXPECT_FALSE(test, vkms_config_is_valid(config));
+
vkms_config_destroy(config);
}
@@ -259,6 +319,131 @@ static void vkms_config_test_invalid_crtc_number(struct kunit *test)
vkms_config_destroy(config);
}
+static void vkms_config_test_plane_attach_crtc(struct kunit *test)
+{
+ struct vkms_config *config;
+ struct vkms_config_plane *overlay_cfg;
+ struct vkms_config_plane *primary_cfg;
+ struct vkms_config_plane *cursor_cfg;
+ struct vkms_config_crtc *crtc_cfg;
+ int err;
+
+ config = vkms_config_create("test");
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, config);
+
+ overlay_cfg = vkms_config_create_plane(config);
+ vkms_config_plane_set_type(overlay_cfg, DRM_PLANE_TYPE_OVERLAY);
+ primary_cfg = vkms_config_create_plane(config);
+ vkms_config_plane_set_type(primary_cfg, DRM_PLANE_TYPE_PRIMARY);
+ cursor_cfg = vkms_config_create_plane(config);
+ vkms_config_plane_set_type(cursor_cfg, DRM_PLANE_TYPE_CURSOR);
+
+ crtc_cfg = vkms_config_create_crtc(config);
+
+ /* No primary or cursor planes */
+ KUNIT_EXPECT_NULL(test, vkms_config_crtc_primary_plane(config, crtc_cfg));
+ KUNIT_EXPECT_NULL(test, vkms_config_crtc_cursor_plane(config, crtc_cfg));
+
+ /* Overlay plane, but no primary or cursor planes */
+ err = vkms_config_plane_attach_crtc(overlay_cfg, crtc_cfg);
+ KUNIT_EXPECT_EQ(test, err, 0);
+ KUNIT_EXPECT_NULL(test, vkms_config_crtc_primary_plane(config, crtc_cfg));
+ KUNIT_EXPECT_NULL(test, vkms_config_crtc_cursor_plane(config, crtc_cfg));
+
+ /* Primary plane, attaching it twice must fail */
+ err = vkms_config_plane_attach_crtc(primary_cfg, crtc_cfg);
+ KUNIT_EXPECT_EQ(test, err, 0);
+ err = vkms_config_plane_attach_crtc(primary_cfg, crtc_cfg);
+ KUNIT_EXPECT_NE(test, err, 0);
+ KUNIT_EXPECT_PTR_EQ(test,
+ vkms_config_crtc_primary_plane(config, crtc_cfg),
+ primary_cfg);
+ KUNIT_EXPECT_NULL(test, vkms_config_crtc_cursor_plane(config, crtc_cfg));
+
+ /* Primary and cursor planes */
+ err = vkms_config_plane_attach_crtc(cursor_cfg, crtc_cfg);
+ KUNIT_EXPECT_EQ(test, err, 0);
+ KUNIT_EXPECT_PTR_EQ(test,
+ vkms_config_crtc_primary_plane(config, crtc_cfg),
+ primary_cfg);
+ KUNIT_EXPECT_PTR_EQ(test,
+ vkms_config_crtc_cursor_plane(config, crtc_cfg),
+ cursor_cfg);
+
+ /* Detach primary and destroy cursor plane */
+ vkms_config_plane_detach_crtc(overlay_cfg, crtc_cfg);
+ vkms_config_plane_detach_crtc(primary_cfg, crtc_cfg);
+ vkms_config_destroy_plane(cursor_cfg);
+ KUNIT_EXPECT_NULL(test, vkms_config_crtc_primary_plane(config, crtc_cfg));
+ KUNIT_EXPECT_NULL(test, vkms_config_crtc_cursor_plane(config, crtc_cfg));
+
+ vkms_config_destroy(config);
+}
+
+static void vkms_config_test_plane_get_possible_crtcs(struct kunit *test)
+{
+ struct vkms_config *config;
+ struct vkms_config_plane *plane_cfg1, *plane_cfg2;
+ struct vkms_config_crtc *crtc_cfg1, *crtc_cfg2;
+ struct vkms_config_crtc *possible_crtc;
+ unsigned long idx = 0;
+ int n_crtcs = 0;
+ int err;
+
+ config = vkms_config_create("test");
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, config);
+
+ plane_cfg1 = vkms_config_create_plane(config);
+ plane_cfg2 = vkms_config_create_plane(config);
+ crtc_cfg1 = vkms_config_create_crtc(config);
+ crtc_cfg2 = vkms_config_create_crtc(config);
+
+ /* No possible CRTCs */
+ vkms_config_plane_for_each_possible_crtc(plane_cfg1, idx, possible_crtc)
+ KUNIT_FAIL(test, "Unexpected possible CRTC");
+
+ vkms_config_plane_for_each_possible_crtc(plane_cfg2, idx, possible_crtc)
+ KUNIT_FAIL(test, "Unexpected possible CRTC");
+
+ /* Plane 1 attached to CRTC 1 and 2 */
+ err = vkms_config_plane_attach_crtc(plane_cfg1, crtc_cfg1);
+ KUNIT_EXPECT_EQ(test, err, 0);
+ err = vkms_config_plane_attach_crtc(plane_cfg1, crtc_cfg2);
+ KUNIT_EXPECT_EQ(test, err, 0);
+
+ vkms_config_plane_for_each_possible_crtc(plane_cfg1, idx, possible_crtc) {
+ n_crtcs++;
+ if (possible_crtc != crtc_cfg1 && possible_crtc != crtc_cfg2)
+ KUNIT_FAIL(test, "Unexpected possible CRTC");
+ }
+ KUNIT_ASSERT_EQ(test, n_crtcs, 2);
+ n_crtcs = 0;
+
+ vkms_config_plane_for_each_possible_crtc(plane_cfg2, idx, possible_crtc)
+ KUNIT_FAIL(test, "Unexpected possible CRTC");
+
+ /* Plane 1 attached to CRTC 1 and plane 2 to CRTC 2 */
+ vkms_config_plane_detach_crtc(plane_cfg1, crtc_cfg2);
+ vkms_config_plane_for_each_possible_crtc(plane_cfg1, idx, possible_crtc) {
+ n_crtcs++;
+ if (possible_crtc != crtc_cfg1)
+ KUNIT_FAIL(test, "Unexpected possible CRTC");
+ }
+ KUNIT_ASSERT_EQ(test, n_crtcs, 1);
+ n_crtcs = 0;
+
+ err = vkms_config_plane_attach_crtc(plane_cfg2, crtc_cfg2);
+ KUNIT_EXPECT_EQ(test, err, 0);
+ vkms_config_plane_for_each_possible_crtc(plane_cfg2, idx, possible_crtc) {
+ n_crtcs++;
+ if (possible_crtc != crtc_cfg2)
+ KUNIT_FAIL(test, "Unexpected possible CRTC");
+ }
+ KUNIT_ASSERT_EQ(test, n_crtcs, 1);
+
+ vkms_config_destroy(config);
+}
+
static struct kunit_case vkms_config_test_cases[] = {
KUNIT_CASE(vkms_config_test_empty_config),
KUNIT_CASE_PARAM(vkms_config_test_default_config,
@@ -267,7 +452,10 @@ static struct kunit_case vkms_config_test_cases[] = {
KUNIT_CASE(vkms_config_test_get_crtcs),
KUNIT_CASE(vkms_config_test_invalid_plane_number),
KUNIT_CASE(vkms_config_test_valid_plane_type),
+ KUNIT_CASE(vkms_config_test_valid_plane_possible_crtcs),
KUNIT_CASE(vkms_config_test_invalid_crtc_number),
+ KUNIT_CASE(vkms_config_test_plane_attach_crtc),
+ KUNIT_CASE(vkms_config_test_plane_get_possible_crtcs),
{}
};
diff --git a/drivers/gpu/drm/vkms/vkms_config.c b/drivers/gpu/drm/vkms/vkms_config.c
index b08021e62c9f..d96f9e5f9b72 100644
--- a/drivers/gpu/drm/vkms/vkms_config.c
+++ b/drivers/gpu/drm/vkms/vkms_config.c
@@ -50,13 +50,20 @@ struct vkms_config *vkms_config_default_create(bool enable_cursor,
goto err_alloc;
vkms_config_crtc_set_writeback(crtc_cfg, enable_writeback);
+ if (vkms_config_plane_attach_crtc(plane_cfg, crtc_cfg))
+ goto err_alloc;
+
if (enable_overlay) {
for (n = 0; n < NUM_OVERLAY_PLANES; n++) {
plane_cfg = vkms_config_create_plane(config);
if (IS_ERR(plane_cfg))
goto err_alloc;
+
vkms_config_plane_set_type(plane_cfg,
DRM_PLANE_TYPE_OVERLAY);
+
+ if (vkms_config_plane_attach_crtc(plane_cfg, crtc_cfg))
+ goto err_alloc;
}
}
@@ -64,7 +71,11 @@ struct vkms_config *vkms_config_default_create(bool enable_cursor,
plane_cfg = vkms_config_create_plane(config);
if (IS_ERR(plane_cfg))
goto err_alloc;
+
vkms_config_plane_set_type(plane_cfg, DRM_PLANE_TYPE_CURSOR);
+
+ if (vkms_config_plane_attach_crtc(plane_cfg, crtc_cfg))
+ goto err_alloc;
}
return config;
@@ -103,7 +114,8 @@ static bool valid_plane_number(struct vkms_config *config)
return true;
}
-static bool valid_plane_type(struct vkms_config *config)
+static bool valid_planes_for_crtc(struct vkms_config *config,
+ struct vkms_config_crtc *crtc_cfg)
{
struct drm_device *dev = &config->dev->drm;
struct vkms_config_plane *plane_cfg;
@@ -111,24 +123,31 @@ static bool valid_plane_type(struct vkms_config *config)
bool has_cursor_plane = false;
vkms_config_for_each_plane(config, plane_cfg) {
+ struct vkms_config_crtc *possible_crtc;
+ unsigned long idx = 0;
enum drm_plane_type type;
type = vkms_config_plane_get_type(plane_cfg);
- if (type == DRM_PLANE_TYPE_PRIMARY) {
- if (has_primary_plane) {
- drm_info(dev, "Multiple primary planes\n");
- return false;
- }
+ vkms_config_plane_for_each_possible_crtc(plane_cfg, idx, possible_crtc) {
+ if (possible_crtc != crtc_cfg)
+ continue;
- has_primary_plane = true;
- } else if (type == DRM_PLANE_TYPE_CURSOR) {
- if (has_cursor_plane) {
- drm_info(dev, "Multiple cursor planes\n");
- return false;
- }
+ if (type == DRM_PLANE_TYPE_PRIMARY) {
+ if (has_primary_plane) {
+ drm_info(dev, "Multiple primary planes\n");
+ return false;
+ }
- has_cursor_plane = true;
+ has_primary_plane = true;
+ } else if (type == DRM_PLANE_TYPE_CURSOR) {
+ if (has_cursor_plane) {
+ drm_info(dev, "Multiple cursor planes\n");
+ return false;
+ }
+
+ has_cursor_plane = true;
+ }
}
}
@@ -140,6 +159,21 @@ static bool valid_plane_type(struct vkms_config *config)
return true;
}
+static bool valid_plane_possible_crtcs(struct vkms_config *config)
+{
+ struct drm_device *dev = &config->dev->drm;
+ struct vkms_config_plane *plane_cfg;
+
+ vkms_config_for_each_plane(config, plane_cfg) {
+ if (xa_empty(&plane_cfg->possible_crtcs)) {
+ drm_info(dev, "All planes must have at least one possible CRTC\n");
+ return false;
+ }
+ }
+
+ return true;
+}
+
static bool valid_crtc_number(struct vkms_config *config)
{
struct drm_device *dev = &config->dev->drm;
@@ -156,15 +190,22 @@ static bool valid_crtc_number(struct vkms_config *config)
bool vkms_config_is_valid(struct vkms_config *config)
{
+ struct vkms_config_crtc *crtc_cfg;
+
if (!valid_plane_number(config))
return false;
if (!valid_crtc_number(config))
return false;
- if (!valid_plane_type(config))
+ if (!valid_plane_possible_crtcs(config))
return false;
+ vkms_config_for_each_crtc(config, crtc_cfg) {
+ if (!valid_planes_for_crtc(config, crtc_cfg))
+ return false;
+ }
+
return true;
}
@@ -214,6 +255,7 @@ struct vkms_config_plane *vkms_config_create_plane(struct vkms_config *config)
return ERR_PTR(-ENOMEM);
vkms_config_plane_set_type(plane_cfg, DRM_PLANE_TYPE_OVERLAY);
+ xa_init_flags(&plane_cfg->possible_crtcs, XA_FLAGS_ALLOC);
list_add_tail(&plane_cfg->link, &config->planes);
@@ -222,10 +264,39 @@ struct vkms_config_plane *vkms_config_create_plane(struct vkms_config *config)
void vkms_config_destroy_plane(struct vkms_config_plane *plane_cfg)
{
+ xa_destroy(&plane_cfg->possible_crtcs);
list_del(&plane_cfg->link);
kfree(plane_cfg);
}
+int __must_check vkms_config_plane_attach_crtc(struct vkms_config_plane *plane_cfg,
+ struct vkms_config_crtc *crtc_cfg)
+{
+ struct vkms_config_crtc *possible_crtc;
+ unsigned long idx = 0;
+ u32 crtc_idx = 0;
+
+ vkms_config_plane_for_each_possible_crtc(plane_cfg, idx, possible_crtc) {
+ if (possible_crtc == crtc_cfg)
+ return -EINVAL;
+ }
+
+ return xa_alloc(&plane_cfg->possible_crtcs, &crtc_idx, crtc_cfg,
+ xa_limit_32b, GFP_KERNEL);
+}
+
+void vkms_config_plane_detach_crtc(struct vkms_config_plane *plane_cfg,
+ struct vkms_config_crtc *crtc_cfg)
+{
+ struct vkms_config_crtc *possible_crtc;
+ unsigned long idx = 0;
+
+ vkms_config_plane_for_each_possible_crtc(plane_cfg, idx, possible_crtc) {
+ if (possible_crtc == crtc_cfg)
+ xa_erase(&plane_cfg->possible_crtcs, idx);
+ }
+}
+
struct vkms_config_crtc *vkms_config_create_crtc(struct vkms_config *config)
{
struct vkms_config_crtc *crtc_cfg;
@@ -244,6 +315,54 @@ struct vkms_config_crtc *vkms_config_create_crtc(struct vkms_config *config)
void vkms_config_destroy_crtc(struct vkms_config *config,
struct vkms_config_crtc *crtc_cfg)
{
+ struct vkms_config_plane *plane_cfg;
+
+ vkms_config_for_each_plane(config, plane_cfg)
+ vkms_config_plane_detach_crtc(plane_cfg, crtc_cfg);
+
list_del(&crtc_cfg->link);
kfree(crtc_cfg);
}
+
+/**
+ * vkms_config_crtc_get_plane() - Return the first attached plane to a CRTC with
+ * the specific type
+ * @config: Configuration containing the CRTC and the plane
+ * @crtc_cfg: Only find planes attached to this CRTC
+ * @type: Plane type to search
+ *
+ * Returns:
+ * The first plane found attached to @crtc_cfg with the type @type.
+ */
+static struct vkms_config_plane *vkms_config_crtc_get_plane(const struct vkms_config *config,
+ struct vkms_config_crtc *crtc_cfg,
+ enum drm_plane_type type)
+{
+ struct vkms_config_plane *plane_cfg;
+ struct vkms_config_crtc *possible_crtc;
+ enum drm_plane_type current_type;
+ unsigned long idx = 0;
+
+ vkms_config_for_each_plane(config, plane_cfg) {
+ current_type = vkms_config_plane_get_type(plane_cfg);
+
+ vkms_config_plane_for_each_possible_crtc(plane_cfg, idx, possible_crtc) {
+ if (possible_crtc == crtc_cfg && current_type == type)
+ return plane_cfg;
+ }
+ }
+
+ return NULL;
+}
+
+struct vkms_config_plane *vkms_config_crtc_primary_plane(const struct vkms_config *config,
+ struct vkms_config_crtc *crtc_cfg)
+{
+ return vkms_config_crtc_get_plane(config, crtc_cfg, DRM_PLANE_TYPE_PRIMARY);
+}
+
+struct vkms_config_plane *vkms_config_crtc_cursor_plane(const struct vkms_config *config,
+ struct vkms_config_crtc *crtc_cfg)
+{
+ return vkms_config_crtc_get_plane(config, crtc_cfg, DRM_PLANE_TYPE_CURSOR);
+}
diff --git a/drivers/gpu/drm/vkms/vkms_config.h b/drivers/gpu/drm/vkms/vkms_config.h
index 0f5937b44948..0fe0ded1d8e4 100644
--- a/drivers/gpu/drm/vkms/vkms_config.h
+++ b/drivers/gpu/drm/vkms/vkms_config.h
@@ -5,6 +5,7 @@
#include <linux/list.h>
#include <linux/types.h>
+#include <linux/xarray.h>
#include "vkms_drv.h"
@@ -12,14 +13,12 @@
* struct vkms_config - General configuration for VKMS driver
*
* @dev_name: Name of the device
- * @writeback: If true, a writeback buffer can be attached to the CRTC
* @planes: List of planes configured for the device
* @crtcs: List of CRTCs configured for the device
* @dev: Used to store the current VKMS device. Only set when the device is instantiated.
*/
struct vkms_config {
const char *dev_name;
- bool writeback;
struct list_head planes;
struct list_head crtcs;
struct vkms_device *dev;
@@ -31,6 +30,7 @@ struct vkms_config {
* @link: Link to the others planes in vkms_config
* @type: Type of the plane. The creator of configuration needs to ensures that
* at least one primary plane is present.
+ * @possible_crtcs: Array of CRTCs that can be used with this plane
* @plane: Internal usage. This pointer should never be considered as valid.
* It can be used to store a temporary reference to a VKMS plane during
* device creation. This pointer is not managed by the configuration and
@@ -40,6 +40,7 @@ struct vkms_config_plane {
struct list_head link;
enum drm_plane_type type;
+ struct xarray possible_crtcs;
/* Internal usage */
struct vkms_plane *plane;
@@ -80,6 +81,16 @@ struct vkms_config_crtc {
#define vkms_config_for_each_crtc(config, crtc_cfg) \
list_for_each_entry((crtc_cfg), &(config)->crtcs, link)
+/**
+ * vkms_config_plane_for_each_possible_crtc - Iterate over the vkms_config_plane
+ * possible CRTCs
+ * @plane_cfg: &struct vkms_config_plane pointer
+ * @idx: Index of the cursor
+ * @possible_crtc: &struct vkms_config_crtc pointer used as cursor
+ */
+#define vkms_config_plane_for_each_possible_crtc(plane_cfg, idx, possible_crtc) \
+ xa_for_each(&(plane_cfg)->possible_crtcs, idx, (possible_crtc))
+
/**
* vkms_config_create() - Create a new VKMS configuration
* @dev_name: Name of the device
@@ -187,6 +198,22 @@ vkms_config_plane_set_type(struct vkms_config_plane *plane_cfg,
plane_cfg->type = type;
}
+/**
+ * vkms_config_plane_attach_crtc - Attach a plane to a CRTC
+ * @plane_cfg: Plane to attach
+ * @crtc_cfg: CRTC to attach @plane_cfg to
+ */
+int __must_check vkms_config_plane_attach_crtc(struct vkms_config_plane *plane_cfg,
+ struct vkms_config_crtc *crtc_cfg);
+
+/**
+ * vkms_config_plane_attach_crtc - Detach a plane from a CRTC
+ * @plane_cfg: Plane to detach
+ * @crtc_cfg: CRTC to detach @plane_cfg from
+ */
+void vkms_config_plane_detach_crtc(struct vkms_config_plane *plane_cfg,
+ struct vkms_config_crtc *crtc_cfg);
+
/**
* vkms_config_create_crtc() - Add a new CRTC configuration
* @config: Configuration to add the CRTC to
@@ -227,4 +254,32 @@ vkms_config_crtc_set_writeback(struct vkms_config_crtc *crtc_cfg,
crtc_cfg->writeback = writeback;
}
+/**
+ * vkms_config_crtc_primary_plane() - Return the primary plane for a CRTC
+ * @config: Configuration containing the CRTC
+ * @crtc_config: Target CRTC
+ *
+ * Note that, if multiple primary planes are found, the first one is returned.
+ * In this case, the configuration will be invalid. See vkms_config_is_valid().
+ *
+ * Returns:
+ * The primary plane or NULL if none is assigned yet.
+ */
+struct vkms_config_plane *vkms_config_crtc_primary_plane(const struct vkms_config *config,
+ struct vkms_config_crtc *crtc_cfg);
+
+/**
+ * vkms_config_crtc_cursor_plane() - Return the cursor plane for a CRTC
+ * @config: Configuration containing the CRTC
+ * @crtc_config: Target CRTC
+ *
+ * Note that, if multiple cursor planes are found, the first one is returned.
+ * In this case, the configuration will be invalid. See vkms_config_is_valid().
+ *
+ * Returns:
+ * The cursor plane or NULL if none is assigned yet.
+ */
+struct vkms_config_plane *vkms_config_crtc_cursor_plane(const struct vkms_config *config,
+ struct vkms_config_crtc *crtc_cfg);
+
#endif /* _VKMS_CONFIG_H_ */
diff --git a/drivers/gpu/drm/vkms/vkms_output.c b/drivers/gpu/drm/vkms/vkms_output.c
index 08ea691db299..f63bc8e3014b 100644
--- a/drivers/gpu/drm/vkms/vkms_output.c
+++ b/drivers/gpu/drm/vkms/vkms_output.c
@@ -10,9 +10,8 @@ int vkms_output_init(struct vkms_device *vkmsdev)
struct drm_device *dev = &vkmsdev->drm;
struct vkms_connector *connector;
struct drm_encoder *encoder;
- struct vkms_output *output;
- struct vkms_plane *primary = NULL, *cursor = NULL;
struct vkms_config_plane *plane_cfg;
+ struct vkms_config_crtc *crtc_cfg;
int ret;
int writeback;
@@ -29,18 +28,37 @@ int vkms_output_init(struct vkms_device *vkmsdev)
DRM_DEV_ERROR(dev->dev, "Failed to init vkms plane\n");
return PTR_ERR(plane_cfg->plane);
}
+ }
+
+ vkms_config_for_each_crtc(vkmsdev->config, crtc_cfg) {
+ struct vkms_config_plane *primary, *cursor;
+
+ primary = vkms_config_crtc_primary_plane(vkmsdev->config, crtc_cfg);
+ cursor = vkms_config_crtc_cursor_plane(vkmsdev->config, crtc_cfg);
- if (type == DRM_PLANE_TYPE_PRIMARY)
- primary = plane_cfg->plane;
- else if (type == DRM_PLANE_TYPE_CURSOR)
- cursor = plane_cfg->plane;
+ crtc_cfg->crtc = vkms_crtc_init(dev, &primary->plane->base,
+ cursor ? &cursor->plane->base : NULL);
+ if (IS_ERR(crtc_cfg->crtc)) {
+ DRM_ERROR("Failed to allocate CRTC\n");
+ return PTR_ERR(crtc_cfg->crtc);
+ }
+
+ /* Initialize the writeback component */
+ if (vkms_config_crtc_get_writeback(crtc_cfg)) {
+ writeback = vkms_enable_writeback_connector(vkmsdev, crtc_cfg->crtc);
+ if (writeback)
+ DRM_ERROR("Failed to init writeback connector\n");
+ }
}
- output = vkms_crtc_init(dev, &primary->base,
- cursor ? &cursor->base : NULL);
- if (IS_ERR(output)) {
- DRM_ERROR("Failed to allocate CRTC\n");
- return PTR_ERR(output);
+ vkms_config_for_each_plane(vkmsdev->config, plane_cfg) {
+ struct vkms_config_crtc *possible_crtc;
+ unsigned long idx = 0;
+
+ vkms_config_plane_for_each_possible_crtc(plane_cfg, idx, possible_crtc) {
+ plane_cfg->plane->base.possible_crtcs |=
+ drm_crtc_mask(&possible_crtc->crtc->crtc);
+ }
}
connector = vkms_connector_init(vkmsdev);
@@ -60,7 +78,9 @@ int vkms_output_init(struct vkms_device *vkmsdev)
DRM_ERROR("Failed to init encoder\n");
return ret;
}
- encoder->possible_crtcs = drm_crtc_mask(&output->crtc);
+
+ vkms_config_for_each_crtc(vkmsdev->config, crtc_cfg)
+ encoder->possible_crtcs = drm_crtc_mask(&crtc_cfg->crtc->crtc);
/* Attach the encoder and the connector */
ret = drm_connector_attach_encoder(&connector->base, encoder);
@@ -69,13 +89,6 @@ int vkms_output_init(struct vkms_device *vkmsdev)
return ret;
}
- /* Initialize the writeback component */
- if (vkmsdev->config->writeback) {
- writeback = vkms_enable_writeback_connector(vkmsdev, output);
- if (writeback)
- DRM_ERROR("Failed to init writeback connector\n");
- }
-
drm_mode_config_reset(dev);
return ret;
--
2.48.1
