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Merge "disp: msm: dp: take port refcount for MST sim ports"

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This commit is contained in:
qctecmdr
2020-06-18 16:02:54 -07:00
committed by Gerrit - the friendly Code Review server
parent 2d62ccb15b 199065f8be
commit 05617b0c83
1 changed files with 109 additions and 9 deletions
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118
msm/dp/dp_mst_drm.c
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@@ -185,14 +185,28 @@ static void dp_mst_sim_destroy_port(struct kref *ref)
if (port->connector) {
mutex_lock(&mgr->destroy_connector_lock);
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);
return;
} else {
kfree(port);
}
drm_dp_mst_put_port_malloc(port);
}
static void dp_mst_sim_topology_get_port(struct drm_dp_mst_port *port)
{
WARN_ON(kref_read(&port->topology_kref) == 0);
kref_get(&port->topology_kref);
DP_MST_DEBUG("get port %p topology(%d)\n", port,
kref_read(&port->topology_kref));
}
static void dp_mst_sim_topology_put_port(struct drm_dp_mst_port *port)
{
DP_MST_DEBUG("put port %p topology(%d)\n", port,
kref_read(&port->topology_kref) - 1);
kref_put(&port->topology_kref, dp_mst_sim_destroy_port);
}
/* DRM DP MST Framework simulator OPs */
@@ -208,12 +222,19 @@ static void dp_mst_sim_add_port(struct dp_mst_private *mst,
if (!port)
return;
kref_init(&port->topology_kref);
kref_init(&port->malloc_kref);
port->parent = mstb;
port->port_num = port_msg->port_number;
port->mgr = mstb->mgr;
port->aux.name = dp_mst.caps.drm_aux->name;
port->aux.dev = mst->dp_display->drm_dev->dev;
/*
* Make sure the memory allocation for our parent branch stays
* around until our own memory allocation is released
*/
kref_get(&mstb->malloc_kref);
port->pdt = port_msg->peer_device_type;
port->input = port_msg->input_port;
port->mcs = port_msg->mcs;
@@ -224,7 +245,7 @@ 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->topology_kref);
dp_mst_sim_topology_get_port(port);
list_add(&port->next, &mstb->ports);
mutex_unlock(&mstb->mgr->lock);
@@ -239,14 +260,14 @@ 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->topology_kref, dp_mst_sim_destroy_port);
dp_mst_sim_topology_put_port(port);
goto put_port;
}
(*mstb->mgr->cbs->register_connector)(port->connector);
}
put_port:
kref_put(&port->topology_kref, dp_mst_sim_destroy_port);
dp_mst_sim_topology_put_port(port);
}
static void dp_mst_sim_link_probe_work(struct work_struct *work)
@@ -257,6 +278,8 @@ static void dp_mst_sim_link_probe_work(struct work_struct *work)
u8 cnt, i;
DP_MST_DEBUG("enter\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
sim = container_of(work, struct dp_mst_sim_mode, probe_work);
mst = container_of(sim, struct dp_mst_private, simulator);
@@ -423,14 +446,21 @@ static int dp_mst_sim_topology_mgr_set_mst(
struct dp_mst_private *mst = container_of(mgr,
struct dp_mst_private, mst_mgr);
/*
* Setting mst off on the mgr initiates shutdown of the branch device.
* Moving the disable to bridge disable in order to make sure the
* connector is valid till the hpd notification is completed.
*/
if (!mst_state)
return 0;
rc = drm_dp_mst_topology_mgr_set_mst(mgr, mst_state);
if (rc < 0) {
DRM_ERROR("unable to set mst topology mgr, rc: %d\n", rc);
return rc;
}
if (mst_state)
queue_work(system_long_wq, &mst->simulator.probe_work);
queue_work(system_long_wq, &mst->simulator.probe_work);
mst->simulator.mst_state = mst_state;
return 0;
@@ -509,7 +539,7 @@ static void dp_mst_sim_handle_hpd_irq(void *dp_display,
}
}
kref_put(&port->topology_kref, dp_mst_sim_destroy_port);
dp_mst_sim_topology_put_port(port);
}
}
@@ -605,6 +635,7 @@ static int dp_mst_bridge_attach(struct drm_bridge *dp_bridge)
struct dp_mst_bridge *bridge;
DP_MST_DEBUG("enter\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
if (!dp_bridge) {
DP_ERR("Invalid params\n");
@@ -628,6 +659,7 @@ static bool dp_mst_bridge_mode_fixup(struct drm_bridge *drm_bridge,
struct dp_display *dp;
DP_MST_DEBUG("enter\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
if (!drm_bridge || !mode || !adjusted_mode) {
DP_ERR("Invalid params\n");
@@ -667,6 +699,7 @@ static int _dp_mst_compute_config(struct drm_atomic_state *state,
int rc = 0;
DP_MST_DEBUG("enter\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
pbn = mst->mst_fw_cbs->calc_pbn_mode(mode);
@@ -679,6 +712,7 @@ static int _dp_mst_compute_config(struct drm_atomic_state *state,
}
DP_MST_DEBUG("exit\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_EXIT);
return rc;
}
@@ -750,6 +784,9 @@ static void _dp_mst_bridge_pre_enable_part1(struct dp_mst_bridge *dp_bridge)
bool ret;
int pbn, slots;
DP_MST_DEBUG("enter\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
/* skip mst specific disable operations during suspend */
if (mst->state == PM_SUSPEND) {
dp_display->wakeup_phy_layer(dp_display, true);
@@ -759,6 +796,14 @@ static void _dp_mst_bridge_pre_enable_part1(struct dp_mst_bridge *dp_bridge)
return;
}
/*
* Take a reference to the port topology to make sure the port object
* is available while waiting for the connector to be cleaned up after
* hpd low. This reference will be released in the disable path.
*/
if (mst->simulator.mst_state)
dp_mst_sim_topology_get_port(port);
pbn = mst->mst_fw_cbs->calc_pbn_mode(&dp_bridge->dp_mode);
slots = mst->mst_fw_cbs->find_vcpi_slots(&mst->mst_mgr, pbn);
@@ -788,6 +833,7 @@ static void _dp_mst_bridge_pre_enable_part2(struct dp_mst_bridge *dp_bridge)
struct dp_mst_private *mst = dp_display->dp_mst_prv_info;
DP_MST_DEBUG("enter\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
/* skip mst specific disable operations during suspend */
if (mst->state == PM_SUSPEND)
@@ -810,6 +856,7 @@ static void _dp_mst_bridge_pre_disable_part1(struct dp_mst_bridge *dp_bridge)
struct drm_dp_mst_port *port = c_conn->mst_port;
DP_MST_DEBUG("enter\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
/* skip mst specific disable operations during suspend */
if (mst->state == PM_SUSPEND) {
@@ -834,8 +881,10 @@ static void _dp_mst_bridge_pre_disable_part2(struct dp_mst_bridge *dp_bridge)
struct sde_connector *c_conn =
to_sde_connector(dp_bridge->connector);
struct drm_dp_mst_port *port = c_conn->mst_port;
int rc = 0;
DP_MST_DEBUG("enter\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
/* skip mst specific disable operations during suspend */
if (mst->state == PM_SUSPEND) {
@@ -849,8 +898,21 @@ static void _dp_mst_bridge_pre_disable_part2(struct dp_mst_bridge *dp_bridge)
mst->mst_fw_cbs->update_payload_part2(&mst->mst_mgr);
port->vcpi.vcpi = dp_bridge->vcpi;
mst->mst_fw_cbs->deallocate_vcpi(&mst->mst_mgr, port);
if (mst->simulator.mst_state) {
rc = drm_dp_mst_topology_mgr_set_mst(&mst->mst_mgr, false);
if (rc < 0)
DRM_WARN("unable to set mst topology mgr, rc: %d\n",
rc);
/* release the reference taken during pre_enable */
dp_mst_sim_topology_put_port(port);
mst->simulator.mst_state = false;
}
dp_bridge->vcpi = 0;
dp_bridge->pbn = 0;
@@ -870,6 +932,9 @@ static void dp_mst_bridge_pre_enable(struct drm_bridge *drm_bridge)
return;
}
DP_MST_DEBUG("enter\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
bridge = to_dp_mst_bridge(drm_bridge);
dp = bridge->display;
@@ -941,6 +1006,9 @@ static void dp_mst_bridge_enable(struct drm_bridge *drm_bridge)
return;
}
DP_MST_DEBUG("enter\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
dp = bridge->display;
rc = dp->post_enable(dp, bridge->dp_panel);
@@ -966,6 +1034,9 @@ static void dp_mst_bridge_disable(struct drm_bridge *drm_bridge)
return;
}
DP_MST_DEBUG("enter\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
bridge = to_dp_mst_bridge(drm_bridge);
if (!bridge->connector) {
DP_ERR("Invalid connector\n");
@@ -1012,6 +1083,9 @@ static void dp_mst_bridge_post_disable(struct drm_bridge *drm_bridge)
return;
}
DP_MST_DEBUG("enter\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
dp = bridge->display;
mst = dp->dp_mst_prv_info;
@@ -1049,6 +1123,7 @@ static void dp_mst_bridge_mode_set(struct drm_bridge *drm_bridge,
struct dp_display *dp;
DP_MST_DEBUG("enter\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
if (!drm_bridge || !mode || !adjusted_mode) {
DP_ERR("Invalid params\n");
@@ -1198,6 +1273,7 @@ dp_mst_connector_detect(struct drm_connector *connector, bool force,
struct dp_mst_connector mst_conn;
DP_MST_DEBUG("enter:\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
status = mst->mst_fw_cbs->detect_port(connector,
&mst->mst_mgr,
@@ -1214,6 +1290,7 @@ dp_mst_connector_detect(struct drm_connector *connector, bool force,
connector->base.id, status);
DP_MST_DEBUG("exit:\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_EXIT);
return status;
}
@@ -1228,6 +1305,7 @@ static int dp_mst_connector_get_modes(struct drm_connector *connector,
int rc = 0;
DP_MST_DEBUG("enter:\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
edid = mst->mst_fw_cbs->get_edid(connector, &mst->mst_mgr,
c_conn->mst_port);
@@ -1239,6 +1317,7 @@ static int dp_mst_connector_get_modes(struct drm_connector *connector,
DP_MST_DEBUG("mst connector get modes. id: %d\n", connector->base.id);
DP_MST_DEBUG("exit:\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_EXIT);
return rc;
}
@@ -1308,6 +1387,7 @@ int dp_mst_connector_get_info(struct drm_connector *connector,
enum drm_connector_status status = connector_status_unknown;
DP_MST_DEBUG("enter:\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
rc = dp_connector_get_info(connector, info, display);
@@ -1324,6 +1404,7 @@ int dp_mst_connector_get_info(struct drm_connector *connector,
connector->base.id, status, rc);
DP_MST_DEBUG("exit:\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_EXIT);
return rc;
}
@@ -1337,6 +1418,7 @@ int dp_mst_connector_get_mode_info(struct drm_connector *connector,
int rc;
DP_MST_DEBUG("enter:\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
rc = dp_connector_get_mode_info(connector, drm_mode, mode_info,
display, avail_res);
@@ -1345,6 +1427,7 @@ int dp_mst_connector_get_mode_info(struct drm_connector *connector,
connector->base.id, rc);
DP_MST_DEBUG("exit:\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_EXIT);
return rc;
}
@@ -1420,6 +1503,7 @@ static int dp_mst_connector_atomic_check(struct drm_connector *connector,
struct dp_display_mode dp_mode;
DP_MST_DEBUG("enter:\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
/*
* Skip atomic check during mst suspend, to avoid mismanagement of
@@ -1508,6 +1592,7 @@ static int dp_mst_connector_config_hdr(struct drm_connector *connector,
int rc;
DP_MST_DEBUG("enter:\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
rc = dp_connector_config_hdr(connector, display, c_state);
@@ -1515,6 +1600,7 @@ static int dp_mst_connector_config_hdr(struct drm_connector *connector,
connector->base.id, rc);
DP_MST_DEBUG("exit:\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_EXIT);
return rc;
}
@@ -1523,10 +1609,16 @@ static void dp_mst_connector_pre_destroy(struct drm_connector *connector,
void *display)
{
struct dp_display *dp_display = display;
struct sde_connector *c_conn = to_sde_connector(connector);
DP_MST_DEBUG("enter:\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
drm_dp_mst_put_port_malloc(c_conn->mst_port);
dp_display->mst_connector_uninstall(dp_display, connector);
DP_MST_DEBUG("exit:\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_EXIT);
}
/* DRM MST callbacks */
@@ -1556,6 +1648,7 @@ dp_mst_add_connector(struct drm_dp_mst_topology_mgr *mgr,
int rc, i;
DP_MST_DEBUG("enter\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
dp_mst = container_of(mgr, struct dp_mst_private, mst_mgr);
@@ -1589,6 +1682,7 @@ dp_mst_add_connector(struct drm_dp_mst_topology_mgr *mgr,
c_conn = to_sde_connector(connector);
c_conn->mst_port = port;
drm_dp_mst_get_port_malloc(c_conn->mst_port);
if (connector->funcs->reset)
connector->funcs->reset(connector);
@@ -1614,6 +1708,7 @@ dp_mst_add_connector(struct drm_dp_mst_topology_mgr *mgr,
static void dp_mst_register_connector(struct drm_connector *connector)
{
DP_MST_DEBUG("enter\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
connector->status = connector->funcs->detect(connector, false);
@@ -1626,6 +1721,7 @@ static void dp_mst_destroy_connector(struct drm_dp_mst_topology_mgr *mgr,
struct drm_connector *connector)
{
DP_MST_DEBUG("enter\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
DP_MST_INFO_LOG("destroy mst connector id:%d\n", connector->base.id);
@@ -1777,6 +1873,7 @@ dp_mst_add_fixed_connector(struct drm_dp_mst_topology_mgr *mgr,
int i, enc_idx;
DP_MST_DEBUG("enter\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
dp_mst = container_of(mgr, struct dp_mst_private, mst_mgr);
@@ -1828,6 +1925,7 @@ static void dp_mst_register_fixed_connector(struct drm_connector *connector)
int i;
DP_MST_DEBUG("enter\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
/* skip connector registered for fixed topology ports */
for (i = 0; i < MAX_DP_MST_DRM_BRIDGES; i++) {
@@ -1848,6 +1946,7 @@ static void dp_mst_destroy_fixed_connector(struct drm_dp_mst_topology_mgr *mgr,
int i;
DP_MST_DEBUG("enter\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
dp_mst = container_of(mgr, struct dp_mst_private, mst_mgr);
@@ -1885,6 +1984,7 @@ dp_mst_drm_fixed_connector_init(struct dp_display *dp_display,
int rc;
DP_MST_DEBUG("enter\n");
SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
dev = dp_display->drm_dev;