[PATCH 3/5] drm/vkms: Support multiple objects (crtcs, etc.) per card

From: Jim Shargo
Date: Fri Jul 22 2022 - 17:32:28 EST

This change supports multiple CRTCs, encoders, connectors instead of one
of each per card.

Since ConfigFS-based devices will support multiple crtcs, it's useful to
move all of the writeback/composition data from being a per-output thing
to being a per-CRTC thing.

Since there's still only ever one CRTC, this should be a no-op refactor.

Signed-off-by: Jim Shargo <jshargo@xxxxxxxxxxxx>
---
drivers/gpu/drm/vkms/vkms_composer.c | 28 +++----
drivers/gpu/drm/vkms/vkms_crtc.c | 91 +++++++++++----------
drivers/gpu/drm/vkms/vkms_drv.c | 3 +-
drivers/gpu/drm/vkms/vkms_drv.h | 66 ++++++++++------
drivers/gpu/drm/vkms/vkms_output.c | 110 ++++++++++++++++++--------
drivers/gpu/drm/vkms/vkms_plane.c | 39 ++++++---
drivers/gpu/drm/vkms/vkms_writeback.c | 25 +++---
7 files changed, 225 insertions(+), 137 deletions(-)

diff --git a/drivers/gpu/drm/vkms/vkms_composer.c b/drivers/gpu/drm/vkms/vkms_composer.c
index c6a1036bf2ea..d27c0831d857 100644
--- a/drivers/gpu/drm/vkms/vkms_composer.c
+++ b/drivers/gpu/drm/vkms/vkms_composer.c
@@ -221,7 +221,7 @@ void vkms_composer_worker(struct work_struct *work)
struct vkms_crtc_state,
composer_work);
struct drm_crtc *crtc = crtc_state->base.crtc;
- struct vkms_output *out = drm_crtc_to_vkms_output(crtc);
+ struct vkms_crtc *vkms_crtc = drm_crtc_to_vkms_crtc(crtc);
struct vkms_composer *primary_composer = NULL;
struct vkms_plane_state *act_plane = NULL;
bool crc_pending, wb_pending;
@@ -230,7 +230,7 @@ void vkms_composer_worker(struct work_struct *work)
u64 frame_start, frame_end;
int ret;

- spin_lock_irq(&out->composer_lock);
+ spin_lock_irq(&vkms_crtc->composer_lock);
frame_start = crtc_state->frame_start;
frame_end = crtc_state->frame_end;
crc_pending = crtc_state->crc_pending;
@@ -238,7 +238,7 @@ void vkms_composer_worker(struct work_struct *work)
crtc_state->frame_start = 0;
crtc_state->frame_end = 0;
crtc_state->crc_pending = false;
- spin_unlock_irq(&out->composer_lock);
+ spin_unlock_irq(&vkms_crtc->composer_lock);

/*
* We raced with the vblank hrtimer and previous work already computed
@@ -270,10 +270,10 @@ void vkms_composer_worker(struct work_struct *work)
crc32 = compute_crc(vaddr_out, primary_composer);

if (wb_pending) {
- drm_writeback_signal_completion(&out->wb_connector, 0);
- spin_lock_irq(&out->composer_lock);
+ drm_writeback_signal_completion(&vkms_crtc->wb_connector, 0);
+ spin_lock_irq(&vkms_crtc->composer_lock);
crtc_state->wb_pending = false;
- spin_unlock_irq(&out->composer_lock);
+ spin_unlock_irq(&vkms_crtc->composer_lock);
} else {
kfree(vaddr_out);
}
@@ -325,25 +325,25 @@ int vkms_verify_crc_source(struct drm_crtc *crtc, const char *src_name,
return 0;
}

-void vkms_set_composer(struct vkms_output *out, bool enabled)
+void vkms_set_composer(struct vkms_crtc *vkms_crtc, bool enabled)
{
bool old_enabled;

if (enabled)
- drm_crtc_vblank_get(&out->crtc);
+ drm_crtc_vblank_get(&vkms_crtc->base);

- spin_lock_irq(&out->lock);
- old_enabled = out->composer_enabled;
- out->composer_enabled = enabled;
- spin_unlock_irq(&out->lock);
+ spin_lock_irq(&vkms_crtc->lock);
+ old_enabled = vkms_crtc->composer_enabled;
+ vkms_crtc->composer_enabled = enabled;
+ spin_unlock_irq(&vkms_crtc->lock);

if (old_enabled)
- drm_crtc_vblank_put(&out->crtc);
+ drm_crtc_vblank_put(&vkms_crtc->base);
}

int vkms_set_crc_source(struct drm_crtc *crtc, const char *src_name)
{
- struct vkms_output *out = drm_crtc_to_vkms_output(crtc);
+ struct vkms_crtc *out = drm_crtc_to_vkms_crtc(crtc);
bool enabled = false;
int ret = 0;

diff --git a/drivers/gpu/drm/vkms/vkms_crtc.c b/drivers/gpu/drm/vkms/vkms_crtc.c
index c1b632952532..d93678d984ae 100644
--- a/drivers/gpu/drm/vkms/vkms_crtc.c
+++ b/drivers/gpu/drm/vkms/vkms_crtc.c
@@ -11,35 +11,34 @@

static enum hrtimer_restart vkms_vblank_simulate(struct hrtimer *timer)
{
- struct vkms_output *output = container_of(timer, struct vkms_output,
- vblank_hrtimer);
- struct drm_crtc *crtc = &output->crtc;
+ struct vkms_crtc *vkms_crtc = timer_to_vkms_crtc(timer);
+ struct drm_crtc *crtc = &vkms_crtc->base;
struct vkms_crtc_state *state;
u64 ret_overrun;
bool ret, fence_cookie;

fence_cookie = dma_fence_begin_signalling();

- ret_overrun = hrtimer_forward_now(&output->vblank_hrtimer,
- output->period_ns);
+ ret_overrun = hrtimer_forward_now(&vkms_crtc->vblank_hrtimer,
+ vkms_crtc->period_ns);
if (ret_overrun != 1)
pr_warn("%s: vblank timer overrun\n", __func__);

- spin_lock(&output->lock);
+ spin_lock(&vkms_crtc->lock);
ret = drm_crtc_handle_vblank(crtc);
if (!ret)
DRM_ERROR("vkms failure on handling vblank");

- state = output->composer_state;
- spin_unlock(&output->lock);
+ state = vkms_crtc->composer_state;
+ spin_unlock(&vkms_crtc->lock);

- if (state && output->composer_enabled) {
+ if (state && vkms_crtc->composer_enabled) {
u64 frame = drm_crtc_accurate_vblank_count(crtc);

/* update frame_start only if a queued vkms_composer_worker()
* has read the data
*/
- spin_lock(&output->composer_lock);
+ spin_lock(&vkms_crtc->composer_lock);
if (!state->crc_pending)
state->frame_start = frame;
else
@@ -47,9 +46,9 @@ static enum hrtimer_restart vkms_vblank_simulate(struct hrtimer *timer)
state->frame_start, frame);
state->frame_end = frame;
state->crc_pending = true;
- spin_unlock(&output->composer_lock);
+ spin_unlock(&vkms_crtc->composer_lock);

- ret = queue_work(output->composer_workq, &state->composer_work);
+ ret = queue_work(vkms_crtc->composer_workq, &state->composer_work);
if (!ret)
DRM_DEBUG_DRIVER("Composer worker already queued\n");
}
@@ -62,28 +61,24 @@ static enum hrtimer_restart vkms_vblank_simulate(struct hrtimer *timer)
static int vkms_enable_vblank(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
- struct vkms_card *card = drm_device_to_vkms_card(dev);
- struct vkms_output *out = &card->output;
+ struct vkms_crtc *vkms_crtc = drm_crtc_to_vkms_crtc(crtc);
unsigned int pipe = drm_crtc_index(crtc);
struct drm_vblank_crtc *vblank = &dev->vblank[pipe];

drm_calc_timestamping_constants(crtc, &crtc->mode);

- hrtimer_init(&out->vblank_hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
- out->vblank_hrtimer.function = &vkms_vblank_simulate;
- out->period_ns = ktime_set(0, vblank->framedur_ns);
- hrtimer_start(&out->vblank_hrtimer, out->period_ns, HRTIMER_MODE_REL);
+ hrtimer_init(&vkms_crtc->vblank_hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+ vkms_crtc->vblank_hrtimer.function = &vkms_vblank_simulate;
+ vkms_crtc->period_ns = ktime_set(0, vblank->framedur_ns);
+ hrtimer_start(&vkms_crtc->vblank_hrtimer, vkms_crtc->period_ns, HRTIMER_MODE_REL);

return 0;
}

static void vkms_disable_vblank(struct drm_crtc *crtc)
{
- struct drm_device *dev = crtc->dev;
- struct vkms_card *card = drm_device_to_vkms_card(dev);
- struct vkms_output *out = &card->output;
-
- hrtimer_cancel(&out->vblank_hrtimer);
+ struct vkms_crtc *vkms_crtc = drm_crtc_to_vkms_crtc(crtc);
+ hrtimer_cancel(&vkms_crtc->vblank_hrtimer);
}

static bool vkms_get_vblank_timestamp(struct drm_crtc *crtc,
@@ -91,8 +86,7 @@ static bool vkms_get_vblank_timestamp(struct drm_crtc *crtc,
bool in_vblank_irq)
{
struct drm_device *dev = crtc->dev;
- struct vkms_card *card = drm_device_to_vkms_card(dev);
- struct vkms_output *output = &card->output;
+ struct vkms_crtc *vkms_crtc = drm_crtc_to_vkms_crtc(crtc);
unsigned int pipe = crtc->index;
struct drm_vblank_crtc *vblank = &dev->vblank[pipe];

@@ -101,7 +95,7 @@ static bool vkms_get_vblank_timestamp(struct drm_crtc *crtc,
return true;
}

- *vblank_time = READ_ONCE(output->vblank_hrtimer.node.expires);
+ *vblank_time = READ_ONCE(vkms_crtc->vblank_hrtimer.node.expires);

if (WARN_ON(*vblank_time == vblank->time))
return true;
@@ -113,7 +107,7 @@ static bool vkms_get_vblank_timestamp(struct drm_crtc *crtc,
* the vblank core expects. Therefore we need to always correct the
* timestampe by one frame.
*/
- *vblank_time -= output->period_ns;
+ *vblank_time -= vkms_crtc->period_ns;

return true;
}
@@ -240,18 +234,18 @@ static void vkms_crtc_atomic_disable(struct drm_crtc *crtc,
static void vkms_crtc_atomic_begin(struct drm_crtc *crtc,
struct drm_atomic_state *state)
{
- struct vkms_output *vkms_output = drm_crtc_to_vkms_output(crtc);
+ struct vkms_crtc *vkms_crtc = drm_crtc_to_vkms_crtc(crtc);

/* This lock is held across the atomic commit to block vblank timer
* from scheduling vkms_composer_worker until the composer is updated
*/
- spin_lock_irq(&vkms_output->lock);
+ spin_lock_irq(&vkms_crtc->lock);
}

static void vkms_crtc_atomic_flush(struct drm_crtc *crtc,
struct drm_atomic_state *state)
{
- struct vkms_output *vkms_output = drm_crtc_to_vkms_output(crtc);
+ struct vkms_crtc *vkms_crtc = drm_crtc_to_vkms_crtc(crtc);

if (crtc->state->event) {
spin_lock(&crtc->dev->event_lock);
@@ -266,9 +260,9 @@ static void vkms_crtc_atomic_flush(struct drm_crtc *crtc,
crtc->state->event = NULL;
}

- vkms_output->composer_state = to_vkms_crtc_state(crtc->state);
+ vkms_crtc->composer_state = to_vkms_crtc_state(crtc->state);

- spin_unlock_irq(&vkms_output->lock);
+ spin_unlock_irq(&vkms_crtc->lock);
}

static const struct drm_crtc_helper_funcs vkms_crtc_helper_funcs = {
@@ -279,27 +273,38 @@ static const struct drm_crtc_helper_funcs vkms_crtc_helper_funcs = {
.atomic_disable = vkms_crtc_atomic_disable,
};

-int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
+struct vkms_crtc *vkms_crtc_init(struct vkms_card *card,
struct drm_plane *primary, struct drm_plane *cursor)
{
- struct vkms_output *vkms_out = drm_crtc_to_vkms_output(crtc);
+ struct drm_device *dev = &card->drm;
+ struct vkms_crtc *vkms_crtc;
int ret;

- ret = drm_crtc_init_with_planes(dev, crtc, primary, cursor,
+ if (card->output.num_crtcs >= VKMS_MAX_OUTPUT_OBJECTS) {
+ return ERR_PTR(ENOMEM);
+ }
+ vkms_crtc = &card->output.crtcs[card->output.num_crtcs++];
+
+ ret = drm_crtc_init_with_planes(dev, &vkms_crtc->base, primary, cursor,
&vkms_crtc_funcs, NULL);
if (ret) {
DRM_ERROR("Failed to init CRTC\n");
- return ret;
+ goto out_error;
}

- drm_crtc_helper_add(crtc, &vkms_crtc_helper_funcs);
+ drm_crtc_helper_add(&vkms_crtc->base, &vkms_crtc_helper_funcs);

- spin_lock_init(&vkms_out->lock);
- spin_lock_init(&vkms_out->composer_lock);
+ spin_lock_init(&vkms_crtc->lock);
+ spin_lock_init(&vkms_crtc->composer_lock);

- vkms_out->composer_workq = alloc_ordered_workqueue("vkms_composer", 0);
- if (!vkms_out->composer_workq)
- return -ENOMEM;
+ vkms_crtc->composer_workq = alloc_ordered_workqueue("vkms_composer", 0);
+ if (!vkms_crtc->composer_workq)
+ goto out_error;
+
+ return vkms_crtc;

- return ret;
+out_error:
+ memset(vkms_crtc, 0, sizeof(*vkms_crtc));
+ card->output.num_crtcs -= 1;
+ return ERR_PTR(ret);
}
diff --git a/drivers/gpu/drm/vkms/vkms_drv.c b/drivers/gpu/drm/vkms/vkms_drv.c
index 92fbade2199b..266c9f643f70 100644
--- a/drivers/gpu/drm/vkms/vkms_drv.c
+++ b/drivers/gpu/drm/vkms/vkms_drv.c
@@ -57,7 +57,8 @@ static void vkms_release(struct drm_device *dev)
{
struct vkms_card *card = drm_device_to_vkms_card(dev);

- destroy_workqueue(card->output.composer_workq);
+ for (int i = 0; i < card->output.num_crtcs; i++)
+ destroy_workqueue(card->output.crtcs[i].composer_workq);
}

static void vkms_atomic_commit_tail(struct drm_atomic_state *old_state)
diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h
index 1a98b81d6f22..30ae06d7af71 100644
--- a/drivers/gpu/drm/vkms/vkms_drv.h
+++ b/drivers/gpu/drm/vkms/vkms_drv.h
@@ -23,6 +23,8 @@

#define NUM_OVERLAY_PLANES 8

+#define VKMS_MAX_OUTPUT_OBJECTS 16
+
struct vkms_writeback_job {
struct iosys_map map[DRM_FORMAT_MAX_PLANES];
struct iosys_map data[DRM_FORMAT_MAX_PLANES];
@@ -51,6 +53,27 @@ struct vkms_plane {
struct drm_plane base;
};

+struct vkms_output;
+
+struct vkms_crtc {
+ struct drm_crtc base;
+
+ struct drm_writeback_connector wb_connector;
+ struct hrtimer vblank_hrtimer;
+ ktime_t period_ns;
+ struct drm_pending_vblank_event *event;
+ /* ordered wq for composer_work */
+ struct workqueue_struct *composer_workq;
+ /* protects concurrent access to composer */
+ spinlock_t lock;
+
+ /* protected by @lock */
+ bool composer_enabled;
+ struct vkms_crtc_state *composer_state;
+
+ spinlock_t composer_lock;
+};
+
/**
* vkms_crtc_state - Driver specific CRTC state
* @base: base CRTC state
@@ -75,23 +98,14 @@ struct vkms_crtc_state {
};

struct vkms_output {
- struct drm_crtc crtc;
- struct drm_encoder encoder;
- struct drm_connector connector;
- struct drm_writeback_connector wb_connector;
- struct hrtimer vblank_hrtimer;
- ktime_t period_ns;
- struct drm_pending_vblank_event *event;
- /* ordered wq for composer_work */
- struct workqueue_struct *composer_workq;
- /* protects concurrent access to composer */
- spinlock_t lock;
-
- /* protected by @lock */
- bool composer_enabled;
- struct vkms_crtc_state *composer_state;
-
- spinlock_t composer_lock;
+ int num_crtcs;
+ struct vkms_crtc crtcs[VKMS_MAX_OUTPUT_OBJECTS];
+ int num_encoders;
+ struct drm_encoder encoders[VKMS_MAX_OUTPUT_OBJECTS];
+ int num_connectors;
+ struct drm_connector connectors[VKMS_MAX_OUTPUT_OBJECTS];
+ int num_planes;
+ struct vkms_plane planes[VKMS_MAX_OUTPUT_OBJECTS];
};

struct vkms_device;
@@ -120,12 +134,15 @@ struct vkms_device {
struct vkms_config config;
};

-#define drm_crtc_to_vkms_output(target) \
- container_of(target, struct vkms_output, crtc)
+#define drm_crtc_to_vkms_crtc(crtc)\
+ container_of(crtc, struct vkms_crtc, base)

-#define drm_device_to_vkms_card(target) \
+#define drm_device_to_vkms_card(target) \
container_of(target, struct vkms_card, drm)

+#define timer_to_vkms_crtc(timer)\
+ container_of(timer, struct vkms_crtc, vblank_hrtimer)
+
#define to_vkms_crtc_state(target)\
container_of(target, struct vkms_crtc_state, base)

@@ -137,14 +154,13 @@ struct vkms_card *vkms_card_init(const char *name, bool is_default);
void vkms_card_destroy(struct vkms_card *card);

/* CRTC */
-int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
- struct drm_plane *primary, struct drm_plane *cursor);
+struct vkms_crtc *vkms_crtc_init(struct vkms_card *card, struct drm_plane *primary, struct drm_plane *cursor);

int vkms_output_init_default(struct vkms_card *card, int index);
int vkms_output_init(struct vkms_card *card, int index);

struct vkms_plane *vkms_plane_init(struct vkms_card *card,
- enum drm_plane_type type, int index);
+ enum drm_plane_type type);

/* CRC Support */
const char *const *vkms_get_crc_sources(struct drm_crtc *crtc,
@@ -155,9 +171,9 @@ int vkms_verify_crc_source(struct drm_crtc *crtc, const char *source_name,

/* Composer Support */
void vkms_composer_worker(struct work_struct *work);
-void vkms_set_composer(struct vkms_output *out, bool enabled);
+void vkms_set_composer(struct vkms_crtc *vkms_crtc, bool enabled);

/* Writeback */
-int vkms_enable_writeback_connector(struct vkms_card *card);
+int vkms_enable_writeback_connector(struct vkms_card *card, struct vkms_crtc *vkms_crtc);

#endif /* _VKMS_DRV_H_ */
diff --git a/drivers/gpu/drm/vkms/vkms_output.c b/drivers/gpu/drm/vkms/vkms_output.c
index dafd47c0a54d..2b72d8e763a8 100644
--- a/drivers/gpu/drm/vkms/vkms_output.c
+++ b/drivers/gpu/drm/vkms/vkms_output.c
@@ -32,19 +32,44 @@ static const struct drm_connector_helper_funcs vkms_conn_helper_funcs = {
.get_modes = vkms_conn_get_modes,
};

-static int vkms_add_overlay_plane(struct vkms_card *card, int index,
- struct drm_crtc *crtc)
+static struct drm_connector *vkms_connector_init(struct vkms_card *card)
{
- struct vkms_plane *overlay;
+ struct drm_connector *connector;
+ int ret;

- overlay = vkms_plane_init(card, DRM_PLANE_TYPE_OVERLAY, index);
- if (IS_ERR(overlay))
- return PTR_ERR(overlay);
+ if (card->output.num_connectors >= VKMS_MAX_OUTPUT_OBJECTS)
+ return ERR_PTR(ENOMEM);

- if (!overlay->base.possible_crtcs)
- overlay->base.possible_crtcs = drm_crtc_mask(crtc);
+ connector = &card->output.connectors[card->output.num_connectors++];
+ ret = drm_connector_init(&card->drm, connector, &vkms_connector_funcs,
+ DRM_MODE_CONNECTOR_VIRTUAL);
+ if (ret) {
+ memset(connector, 0, sizeof(*connector));
+ card->output.num_connectors -= 1;
+ return ERR_PTR(ret);
+ }

- return 0;
+ drm_connector_helper_add(connector, &vkms_conn_helper_funcs);
+
+ return connector;
+}
+
+static struct drm_encoder *vkms_encoder_init(struct vkms_card *card)
+{
+ struct drm_encoder *encoder;
+ int ret;
+
+ if (card->output.num_encoders >= VKMS_MAX_OUTPUT_OBJECTS)
+ return ERR_PTR(ENOMEM);
+
+ encoder = &card->output.encoders[card->output.num_encoders++];
+ ret = drm_simple_encoder_init(&card->drm, encoder, DRM_MODE_ENCODER_VIRTUAL);
+ if (ret) {
+ memset(encoder, 0, sizeof(*encoder));
+ card->output.num_encoders -= 1;
+ return ERR_PTR(ret);
+ }
+ return encoder;
}

int vkms_output_init_default(struct vkms_card *card, int index)
@@ -52,51 +77,65 @@ int vkms_output_init_default(struct vkms_card *card, int index)
const struct vkms_config *config = &card->vkms_device->config;
struct vkms_output *output = &card->output;
struct drm_device *dev = &card->drm;
- struct drm_connector *connector = &output->connector;
- struct drm_encoder *encoder = &output->encoder;
- struct drm_crtc *crtc = &output->crtc;
+ struct drm_connector *connector;
+ struct drm_encoder *encoder;
+ struct vkms_crtc *vkms_crtc;
struct vkms_plane *primary, *cursor = NULL;
int ret;
int writeback;
unsigned int n;

- primary = vkms_plane_init(card, DRM_PLANE_TYPE_PRIMARY, index);
+ primary = vkms_plane_init(card, DRM_PLANE_TYPE_PRIMARY);
if (IS_ERR(primary))
return PTR_ERR(primary);

if (config->overlay) {
for (n = 0; n < NUM_OVERLAY_PLANES; n++) {
- ret = vkms_add_overlay_plane(card, index, crtc);
- if (ret)
- return ret;
+ struct vkms_plane *overlay =
+ vkms_plane_init(card, DRM_PLANE_TYPE_OVERLAY);
+ if (IS_ERR(overlay)) {
+ ret = PTR_ERR(overlay);
+ goto err_planes;
+ }
}
}

if (config->cursor) {
- cursor = vkms_plane_init(card, DRM_PLANE_TYPE_CURSOR, index);
- if (IS_ERR(cursor))
- return PTR_ERR(cursor);
+ cursor = vkms_plane_init(card, DRM_PLANE_TYPE_CURSOR);
+ if (IS_ERR(cursor)) {
+ ret = PTR_ERR(cursor);
+ goto err_planes;
+ }
}

- ret = vkms_crtc_init(dev, crtc, &primary->base, &cursor->base);
- if (ret)
- return ret;
+ vkms_crtc = vkms_crtc_init(card, &primary->base,
+ cursor ? &cursor->base : NULL);
+ if (IS_ERR(vkms_crtc)) {
+ DRM_ERROR("Failed to init crtc\n");
+ ret = PTR_ERR(vkms_crtc);
+ goto err_planes;
+ }

- ret = drm_connector_init(dev, connector, &vkms_connector_funcs,
- DRM_MODE_CONNECTOR_VIRTUAL);
- if (ret) {
+ for (int i = 0; i < card->output.num_planes; i++) {
+ card->output.planes[i].base.possible_crtcs |=
+ drm_crtc_mask(&vkms_crtc->base);
+ }
+
+ connector = vkms_connector_init(card);
+ if (IS_ERR(connector)) {
DRM_ERROR("Failed to init connector\n");
+ ret = PTR_ERR(connector);
goto err_connector;
}

- drm_connector_helper_add(connector, &vkms_conn_helper_funcs);
-
- ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_VIRTUAL);
- if (ret) {
+ encoder = vkms_encoder_init(card);
+ if (IS_ERR(encoder)) {
DRM_ERROR("Failed to init encoder\n");
+ ret = PTR_ERR(encoder);
goto err_encoder;
}
- encoder->possible_crtcs = 1;
+ encoder->possible_crtcs |= drm_crtc_mask(&vkms_crtc->base);
+

ret = drm_connector_attach_encoder(connector, encoder);
if (ret) {
@@ -105,7 +144,7 @@ int vkms_output_init_default(struct vkms_card *card, int index)
}

if (config->writeback) {
- writeback = vkms_enable_writeback_connector(card);
+ writeback = vkms_enable_writeback_connector(card, vkms_crtc);
if (writeback)
DRM_ERROR("Failed to init writeback connector\n");
}
@@ -121,7 +160,14 @@ int vkms_output_init_default(struct vkms_card *card, int index)
drm_connector_cleanup(connector);

err_connector:
- drm_crtc_cleanup(crtc);
+ drm_crtc_cleanup(&vkms_crtc->base);
+
+err_planes:
+ for (int i = 0; i < output->num_planes; i++) {
+ drm_plane_cleanup(&output->planes[i].base);
+ }
+
+ memset(output, 0, sizeof(struct vkms_output));

return ret;
}
diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c
index 28abd61a0bb9..5f49257fe16e 100644
--- a/drivers/gpu/drm/vkms/vkms_plane.c
+++ b/drivers/gpu/drm/vkms/vkms_plane.c
@@ -7,6 +7,7 @@
#include <drm/drm_fourcc.h>
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_plane.h>
#include <drm/drm_plane_helper.h>

#include "vkms_drv.h"
@@ -65,6 +66,19 @@ static void vkms_plane_destroy_state(struct drm_plane *plane,
kfree(vkms_state);
}

+static void vkms_plane_destroy(struct drm_plane *plane)
+{
+ struct vkms_plane *vkms_plane =
+ container_of(plane, struct vkms_plane, base);
+
+ if (plane->state) {
+ vkms_plane_destroy_state(plane, plane->state);
+ plane->state = NULL;
+ }
+
+ memset(vkms_plane, 0, sizeof(struct vkms_plane));
+}
+
static void vkms_plane_reset(struct drm_plane *plane)
{
struct vkms_plane_state *vkms_state;
@@ -86,8 +100,9 @@ static void vkms_plane_reset(struct drm_plane *plane)
static const struct drm_plane_funcs vkms_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
- .reset = vkms_plane_reset,
- .atomic_duplicate_state = vkms_plane_duplicate_state,
+ .destroy = vkms_plane_destroy,
+ .reset = vkms_plane_reset,
+ .atomic_duplicate_state = vkms_plane_duplicate_state,
.atomic_destroy_state = vkms_plane_destroy_state,
};

@@ -159,13 +174,20 @@ static const struct drm_plane_helper_funcs vkms_primary_helper_funcs = {
};

struct vkms_plane *vkms_plane_init(struct vkms_card *card,
- enum drm_plane_type type, int index)
+ enum drm_plane_type type)
{
struct drm_device *dev = &card->drm;
+ struct vkms_output *output = &card->output;
const struct drm_plane_helper_funcs *funcs;
struct vkms_plane *plane;
const u32 *formats;
int nformats;
+ int ret;
+
+ if (output->num_planes >= VKMS_MAX_OUTPUT_OBJECTS)
+ return ERR_PTR(ENOMEM);
+
+ plane = &output->planes[output->num_planes++];

switch (type) {
case DRM_PLANE_TYPE_PRIMARY:
@@ -186,12 +208,11 @@ struct vkms_plane *vkms_plane_init(struct vkms_card *card,
break;
}

- plane = drmm_universal_plane_alloc(dev, struct vkms_plane, base, 1 << index,
- &vkms_plane_funcs,
- formats, nformats,
- NULL, type, NULL);
- if (IS_ERR(plane))
- return plane;
+ ret = drm_universal_plane_init(dev, &plane->base, 0,
+ &vkms_plane_funcs, formats, nformats,
+ NULL, type, NULL);
+ if (ret)
+ return ERR_PTR(ret);

drm_plane_helper_add(&plane->base, funcs);

diff --git a/drivers/gpu/drm/vkms/vkms_writeback.c b/drivers/gpu/drm/vkms/vkms_writeback.c
index 681e7267d688..68c7a77ab93f 100644
--- a/drivers/gpu/drm/vkms/vkms_writeback.c
+++ b/drivers/gpu/drm/vkms/vkms_writeback.c
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0+

#include <linux/iosys-map.h>
+#include <linux/kernel.h>

#include <drm/drm_atomic.h>
#include <drm/drm_fourcc.h>
@@ -94,15 +95,14 @@ static void vkms_wb_cleanup_job(struct drm_writeback_connector *connector,
struct drm_writeback_job *job)
{
struct vkms_writeback_job *vkmsjob = job->priv;
- struct vkms_card *card;
+ struct vkms_crtc *vkms_crtc = container_of(connector, struct vkms_crtc, wb_connector);

if (!job->fb)
return;

drm_gem_fb_vunmap(job->fb, vkmsjob->map);

- card = drm_device_to_vkms_card(job->fb->dev);
- vkms_set_composer(&card->output, false);
+ vkms_set_composer(vkms_crtc, false);
kfree(vkmsjob);
}

@@ -111,21 +111,20 @@ static void vkms_wb_atomic_commit(struct drm_connector *conn,
{
struct drm_connector_state *connector_state = drm_atomic_get_new_connector_state(state,
conn);
- struct vkms_card *card = drm_device_to_vkms_card(conn->dev);
- struct vkms_output *output = &card->output;
- struct drm_writeback_connector *wb_conn = &output->wb_connector;
+ struct vkms_crtc *vkms_crtc = drm_crtc_to_vkms_crtc(connector_state->crtc);
+ struct drm_writeback_connector *wb_conn = &vkms_crtc->wb_connector;
struct drm_connector_state *conn_state = wb_conn->base.state;
- struct vkms_crtc_state *crtc_state = output->composer_state;
+ struct vkms_crtc_state *crtc_state = vkms_crtc->composer_state;

if (!conn_state)
return;

- vkms_set_composer(&card->output, true);
+ vkms_set_composer(vkms_crtc, true);

- spin_lock_irq(&output->composer_lock);
+ spin_lock_irq(&vkms_crtc->composer_lock);
crtc_state->active_writeback = conn_state->writeback_job->priv;
crtc_state->wb_pending = true;
- spin_unlock_irq(&output->composer_lock);
+ spin_unlock_irq(&vkms_crtc->composer_lock);
drm_writeback_queue_job(wb_conn, connector_state);
}

@@ -136,11 +135,11 @@ static const struct drm_connector_helper_funcs vkms_wb_conn_helper_funcs = {
.atomic_commit = vkms_wb_atomic_commit,
};

-int vkms_enable_writeback_connector(struct vkms_card *card)
+int vkms_enable_writeback_connector(struct vkms_card *card, struct vkms_crtc *vkms_crtc)
{
- struct drm_writeback_connector *wb = &card->output.wb_connector;
+ struct drm_writeback_connector *wb = &vkms_crtc->wb_connector;

- card->output.wb_connector.encoder.possible_crtcs = 1;
+ vkms_crtc->wb_connector.encoder.possible_crtcs = 1;
drm_connector_helper_add(&wb->base, &vkms_wb_conn_helper_funcs);

return drm_writeback_connector_init(&card->drm, wb,
--
2.37.1.359.gd136c6c3e2-goog