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disp: msm: enable DP MST compilation

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Enable compilation of DP MST feature. Also ported drm mst implementation to
use updated API definitions. Changes to the API include; removal of hotplug
callback; separate refcounting for topology and memory allocation in mst
port; pass the entire port instead of slot count in
atomic_release_vcpi_slots API.

Change-Id: I951c2978339229ea7e124c2addc114ea5d3cbb3d
Signed-off-by: Rajkumar Subbiah <rsubbia@codeaurora.org>
This commit is contained in:
Rajkumar Subbiah
2020-03-11 17:55:37 -04:00
parent 4d124f3e10
commit e56293e396
6 changed files with 42 additions and 41 deletions
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60
msm/dp/dp_mst_drm.c
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@@ -71,7 +71,7 @@ struct dp_drm_mst_fw_helper_ops {
bool mst_state);
int (*atomic_release_vcpi_slots)(struct drm_atomic_state *state,
struct drm_dp_mst_topology_mgr *mgr,
int slots);
struct drm_dp_mst_port *port);
void (*get_vcpi_info)(struct drm_dp_mst_topology_mgr *mgr,
int vcpi, int *start_slot, int *num_slots);
void (*reset_vcpi_slots)(struct drm_dp_mst_topology_mgr *mgr,
@@ -158,10 +158,26 @@ struct dp_mst_encoder_info_cache {
struct dp_mst_private dp_mst;
struct dp_mst_encoder_info_cache dp_mst_enc_cache;
static void dp_mst_hotplug(struct drm_dp_mst_topology_mgr *mgr)
{
struct dp_mst_private *mst = container_of(mgr, struct dp_mst_private,
mst_mgr);
struct drm_device *dev = mst->dp_display->drm_dev;
char event_string[] = "HOTPLUG=1";
char *envp[2];
envp[0] = event_string;
envp[1] = NULL;
kobject_uevent_env(&dev->primary->kdev->kobj, KOBJ_CHANGE, envp);
DP_MST_INFO_LOG("mst hot plug event\n");
}
static void dp_mst_sim_destroy_port(struct kref *ref)
{
struct drm_dp_mst_port *port = container_of(ref,
struct drm_dp_mst_port, kref);
struct drm_dp_mst_port, topology_kref);
struct drm_dp_mst_topology_mgr *mgr = port->mgr;
if (port->cached_edid)
@@ -169,7 +185,7 @@ static void dp_mst_sim_destroy_port(struct kref *ref)
if (port->connector) {
mutex_lock(&mgr->destroy_connector_lock);
kref_get(&port->parent->kref);
kref_get(&port->parent->topology_kref);
list_add(&port->next, &mgr->destroy_connector_list);
mutex_unlock(&mgr->destroy_connector_lock);
schedule_work(&mgr->destroy_connector_work);
@@ -191,7 +207,7 @@ static void dp_mst_sim_add_port(struct dp_mst_private *mst,
port = kzalloc(sizeof(*port), GFP_KERNEL);
if (!port)
return;
kref_init(&port->kref);
kref_init(&port->topology_kref);
port->parent = mstb;
port->port_num = port_msg->port_number;
port->mgr = mstb->mgr;
@@ -208,7 +224,7 @@ static void dp_mst_sim_add_port(struct dp_mst_private *mst,
port->num_sdp_stream_sinks = port_msg->num_sdp_stream_sinks;
mutex_lock(&mstb->mgr->lock);
kref_get(&port->kref);
kref_get(&port->topology_kref);
list_add(&port->next, &mstb->ports);
mutex_unlock(&mstb->mgr->lock);
@@ -223,14 +239,14 @@ static void dp_mst_sim_add_port(struct dp_mst_private *mst,
mutex_lock(&mstb->mgr->lock);
list_del(&port->next);
mutex_unlock(&mstb->mgr->lock);
kref_put(&port->kref, dp_mst_sim_destroy_port);
kref_put(&port->topology_kref, dp_mst_sim_destroy_port);
goto put_port;
}
(*mstb->mgr->cbs->register_connector)(port->connector);
}
put_port:
kref_put(&port->kref, dp_mst_sim_destroy_port);
kref_put(&port->topology_kref, dp_mst_sim_destroy_port);
}
static void dp_mst_sim_link_probe_work(struct work_struct *work)
@@ -271,7 +287,7 @@ static void dp_mst_sim_link_probe_work(struct work_struct *work)
dp_mst_sim_add_port(mst, &port_data);
}
mst->mst_mgr.cbs->hotplug(&mst->mst_mgr);
dp_mst_hotplug(&mst->mst_mgr);
DP_MST_DEBUG("completed\n");
}
@@ -493,7 +509,7 @@ static void dp_mst_sim_handle_hpd_irq(void *dp_display,
}
}
kref_put(&port->kref, dp_mst_sim_destroy_port);
kref_put(&port->topology_kref, dp_mst_sim_destroy_port);
}
}
@@ -1400,7 +1416,7 @@ static int dp_mst_connector_atomic_check(struct drm_connector *connector,
struct dp_mst_bridge *bridge = NULL;
struct dp_display *dp_display = display;
struct dp_mst_private *mst = dp_display->dp_mst_prv_info;
struct sde_connector *c_conn;
struct sde_connector *c_conn = to_sde_connector(connector);
struct dp_display_mode dp_mode;
DP_MST_DEBUG("enter:\n");
@@ -1446,7 +1462,7 @@ static int dp_mst_connector_atomic_check(struct drm_connector *connector,
slots = bridge->num_slots;
if (drm_atomic_crtc_needs_modeset(crtc_state) && slots > 0) {
rc = mst->mst_fw_cbs->atomic_release_vcpi_slots(state,
&mst->mst_mgr, slots);
&mst->mst_mgr, c_conn->mst_port);
if (rc) {
DP_ERR("failed releasing %d vcpi slots rc:%d\n",
slots, rc);
@@ -1461,8 +1477,6 @@ mode_set:
crtc_state = drm_atomic_get_new_crtc_state(state, new_conn_state->crtc);
if (drm_atomic_crtc_needs_modeset(crtc_state) && crtc_state->active) {
c_conn = to_sde_connector(connector);
dp_display->convert_to_dp_mode(dp_display, c_conn->drv_panel,
&crtc_state->mode, &dp_mode);
@@ -1904,26 +1918,10 @@ dp_mst_drm_fixed_connector_init(struct dp_display *dp_display,
return connector;
}
static void dp_mst_hotplug(struct drm_dp_mst_topology_mgr *mgr)
{
struct dp_mst_private *mst = container_of(mgr, struct dp_mst_private,
mst_mgr);
struct drm_device *dev = mst->dp_display->drm_dev;
char event_string[] = "MST_HOTPLUG=1";
char *envp[2];
envp[0] = event_string;
envp[1] = NULL;
kobject_uevent_env(&dev->primary->kdev->kobj, KOBJ_CHANGE, envp);
DP_MST_INFO_LOG("mst hot plug event\n");
}
static void dp_mst_hpd_event_notify(struct dp_mst_private *mst, bool hpd_status)
{
struct drm_device *dev = mst->dp_display->drm_dev;
char event_string[] = "MST_HOTPLUG=1";
char event_string[] = "HOTPLUG=1";
char status[HPD_STRING_SIZE];
char *envp[3];
@@ -2071,14 +2069,12 @@ static const struct drm_dp_mst_topology_cbs dp_mst_drm_cbs = {
.add_connector = dp_mst_add_connector,
.register_connector = dp_mst_register_connector,
.destroy_connector = dp_mst_destroy_connector,
.hotplug = dp_mst_hotplug,
};
static const struct drm_dp_mst_topology_cbs dp_mst_fixed_drm_cbs = {
.add_connector = dp_mst_add_fixed_connector,
.register_connector = dp_mst_register_fixed_connector,
.destroy_connector = dp_mst_destroy_fixed_connector,
.hotplug = dp_mst_hotplug,
};
static void dp_mst_sim_init(struct dp_mst_private *mst)