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-rw-r--r--drivers/gpu/drm/msm/dp/dp_aux.c17
-rw-r--r--drivers/gpu/drm/msm/dp/dp_ctrl.c23
-rw-r--r--drivers/gpu/drm/msm/dp/dp_display.c59
-rw-r--r--drivers/gpu/drm/msm/dp/dp_display.h1
-rw-r--r--drivers/gpu/drm/msm/dp/dp_drm.c75
-rw-r--r--drivers/gpu/drm/msm/dp/dp_hpd.c2
-rw-r--r--drivers/gpu/drm/msm/dp/dp_hpd.h2
-rw-r--r--drivers/gpu/drm/msm/dp/dp_link.c19
8 files changed, 165 insertions, 33 deletions
diff --git a/drivers/gpu/drm/msm/dp/dp_aux.c b/drivers/gpu/drm/msm/dp/dp_aux.c
index eb40d8413bca..6d36f63c3338 100644
--- a/drivers/gpu/drm/msm/dp/dp_aux.c
+++ b/drivers/gpu/drm/msm/dp/dp_aux.c
@@ -33,6 +33,7 @@ struct dp_aux_private {
bool read;
bool no_send_addr;
bool no_send_stop;
+ bool initted;
u32 offset;
u32 segment;
@@ -331,6 +332,10 @@ static ssize_t dp_aux_transfer(struct drm_dp_aux *dp_aux,
}
mutex_lock(&aux->mutex);
+ if (!aux->initted) {
+ ret = -EIO;
+ goto exit;
+ }
dp_aux_update_offset_and_segment(aux, msg);
dp_aux_transfer_helper(aux, msg, true);
@@ -380,6 +385,8 @@ static ssize_t dp_aux_transfer(struct drm_dp_aux *dp_aux,
}
aux->cmd_busy = false;
+
+exit:
mutex_unlock(&aux->mutex);
return ret;
@@ -431,8 +438,13 @@ void dp_aux_init(struct drm_dp_aux *dp_aux)
aux = container_of(dp_aux, struct dp_aux_private, dp_aux);
+ mutex_lock(&aux->mutex);
+
dp_catalog_aux_enable(aux->catalog, true);
aux->retry_cnt = 0;
+ aux->initted = true;
+
+ mutex_unlock(&aux->mutex);
}
void dp_aux_deinit(struct drm_dp_aux *dp_aux)
@@ -441,7 +453,12 @@ void dp_aux_deinit(struct drm_dp_aux *dp_aux)
aux = container_of(dp_aux, struct dp_aux_private, dp_aux);
+ mutex_lock(&aux->mutex);
+
+ aux->initted = false;
dp_catalog_aux_enable(aux->catalog, false);
+
+ mutex_unlock(&aux->mutex);
}
int dp_aux_register(struct drm_dp_aux *dp_aux)
diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c
index 62e75dc8afc6..c724cb0bde9d 100644
--- a/drivers/gpu/drm/msm/dp/dp_ctrl.c
+++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c
@@ -119,13 +119,13 @@ void dp_ctrl_push_idle(struct dp_ctrl *dp_ctrl)
static void dp_ctrl_config_ctrl(struct dp_ctrl_private *ctrl)
{
u32 config = 0, tbd;
- u8 *dpcd = ctrl->panel->dpcd;
+ const u8 *dpcd = ctrl->panel->dpcd;
/* Default-> LSCLK DIV: 1/4 LCLK */
config |= (2 << DP_CONFIGURATION_CTRL_LSCLK_DIV_SHIFT);
/* Scrambler reset enable */
- if (dpcd[DP_EDP_CONFIGURATION_CAP] & DP_ALTERNATE_SCRAMBLER_RESET_CAP)
+ if (drm_dp_alternate_scrambler_reset_cap(dpcd))
config |= DP_CONFIGURATION_CTRL_ASSR;
tbd = dp_link_get_test_bits_depth(ctrl->link,
@@ -1228,7 +1228,10 @@ static int dp_ctrl_link_train(struct dp_ctrl_private *ctrl,
int *training_step)
{
int ret = 0;
+ const u8 *dpcd = ctrl->panel->dpcd;
u8 encoding = DP_SET_ANSI_8B10B;
+ u8 ssc;
+ u8 assr;
struct dp_link_info link_info = {0};
dp_ctrl_config_ctrl(ctrl);
@@ -1238,9 +1241,21 @@ static int dp_ctrl_link_train(struct dp_ctrl_private *ctrl,
link_info.capabilities = DP_LINK_CAP_ENHANCED_FRAMING;
dp_aux_link_configure(ctrl->aux, &link_info);
+
+ if (drm_dp_max_downspread(dpcd)) {
+ ssc = DP_SPREAD_AMP_0_5;
+ drm_dp_dpcd_write(ctrl->aux, DP_DOWNSPREAD_CTRL, &ssc, 1);
+ }
+
drm_dp_dpcd_write(ctrl->aux, DP_MAIN_LINK_CHANNEL_CODING_SET,
&encoding, 1);
+ if (drm_dp_alternate_scrambler_reset_cap(dpcd)) {
+ assr = DP_ALTERNATE_SCRAMBLER_RESET_ENABLE;
+ drm_dp_dpcd_write(ctrl->aux, DP_EDP_CONFIGURATION_SET,
+ &assr, 1);
+ }
+
ret = dp_ctrl_link_train_1(ctrl, training_step);
if (ret) {
DRM_ERROR("link training #1 failed. ret=%d\n", ret);
@@ -1312,9 +1327,11 @@ static int dp_ctrl_enable_mainlink_clocks(struct dp_ctrl_private *ctrl)
struct dp_io *dp_io = &ctrl->parser->io;
struct phy *phy = dp_io->phy;
struct phy_configure_opts_dp *opts_dp = &dp_io->phy_opts.dp;
+ const u8 *dpcd = ctrl->panel->dpcd;
opts_dp->lanes = ctrl->link->link_params.num_lanes;
opts_dp->link_rate = ctrl->link->link_params.rate / 100;
+ opts_dp->ssc = drm_dp_max_downspread(dpcd);
dp_ctrl_set_clock_rate(ctrl, DP_CTRL_PM, "ctrl_link",
ctrl->link->link_params.rate * 1000);
@@ -1406,7 +1423,7 @@ void dp_ctrl_host_deinit(struct dp_ctrl *dp_ctrl)
static bool dp_ctrl_use_fixed_nvid(struct dp_ctrl_private *ctrl)
{
- u8 *dpcd = ctrl->panel->dpcd;
+ const u8 *dpcd = ctrl->panel->dpcd;
/*
* For better interop experience, used a fixed NVID=0x8000
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index aba8aa47ed76..7cc4d21f2091 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -135,8 +135,18 @@ static const struct msm_dp_config sc7180_dp_cfg = {
.num_descs = 1,
};
+static const struct msm_dp_config sc7280_dp_cfg = {
+ .descs = (const struct msm_dp_desc[]) {
+ [MSM_DP_CONTROLLER_0] = { .io_start = 0x0ae90000, .connector_type = DRM_MODE_CONNECTOR_DisplayPort },
+ [MSM_DP_CONTROLLER_1] = { .io_start = 0x0aea0000, .connector_type = DRM_MODE_CONNECTOR_eDP },
+ },
+ .num_descs = 2,
+};
+
static const struct of_device_id dp_dt_match[] = {
{ .compatible = "qcom,sc7180-dp", .data = &sc7180_dp_cfg },
+ { .compatible = "qcom,sc7280-dp", .data = &sc7280_dp_cfg },
+ { .compatible = "qcom,sc7280-edp", .data = &sc7280_dp_cfg },
{}
};
@@ -224,13 +234,10 @@ static int dp_display_bind(struct device *dev, struct device *master,
{
int rc = 0;
struct dp_display_private *dp = dev_get_dp_display_private(dev);
- struct msm_drm_private *priv;
- struct drm_device *drm;
-
- drm = dev_get_drvdata(master);
+ struct msm_drm_private *priv = dev_get_drvdata(master);
+ struct drm_device *drm = priv->dev;
dp->dp_display.drm_dev = drm;
- priv = drm->dev_private;
priv->dp[dp->id] = &dp->dp_display;
rc = dp->parser->parse(dp->parser, dp->dp_display.connector_type);
@@ -266,8 +273,7 @@ static void dp_display_unbind(struct device *dev, struct device *master,
void *data)
{
struct dp_display_private *dp = dev_get_dp_display_private(dev);
- struct drm_device *drm = dev_get_drvdata(master);
- struct msm_drm_private *priv = drm->dev_private;
+ struct msm_drm_private *priv = dev_get_drvdata(master);
dp_power_client_deinit(dp->power);
dp_aux_unregister(dp->aux);
@@ -410,12 +416,11 @@ static int dp_display_usbpd_configure_cb(struct device *dev)
static int dp_display_usbpd_disconnect_cb(struct device *dev)
{
- int rc = 0;
struct dp_display_private *dp = dev_get_dp_display_private(dev);
dp_add_event(dp, EV_USER_NOTIFICATION, false, 0);
- return rc;
+ return 0;
}
static void dp_display_handle_video_request(struct dp_display_private *dp)
@@ -522,11 +527,8 @@ static int dp_hpd_plug_handle(struct dp_display_private *dp, u32 data)
dp->hpd_state = ST_CONNECT_PENDING;
- hpd->hpd_high = 1;
-
ret = dp_display_usbpd_configure_cb(&dp->pdev->dev);
if (ret) { /* link train failed */
- hpd->hpd_high = 0;
dp->hpd_state = ST_DISCONNECTED;
if (ret == -ECONNRESET) { /* cable unplugged */
@@ -603,7 +605,6 @@ static int dp_hpd_unplug_handle(struct dp_display_private *dp, u32 data)
/* triggered by irq_hdp with sink_count = 0 */
if (dp->link->sink_count == 0) {
dp_ctrl_off_phy(dp->ctrl);
- hpd->hpd_high = 0;
dp->core_initialized = false;
}
mutex_unlock(&dp->event_mutex);
@@ -627,8 +628,6 @@ static int dp_hpd_unplug_handle(struct dp_display_private *dp, u32 data)
/* disable HPD plug interrupts */
dp_catalog_hpd_config_intr(dp->catalog, DP_DP_HPD_PLUG_INT_MASK, false);
- hpd->hpd_high = 0;
-
/*
* We don't need separate work for disconnect as
* connect/attention interrupts are disabled
@@ -693,9 +692,15 @@ static int dp_irq_hpd_handle(struct dp_display_private *dp, u32 data)
return 0;
}
- ret = dp_display_usbpd_attention_cb(&dp->pdev->dev);
- if (ret == -ECONNRESET) { /* cable unplugged */
- dp->core_initialized = false;
+ /*
+ * dp core (ahb/aux clks) must be initialized before
+ * irq_hpd be handled
+ */
+ if (dp->core_initialized) {
+ ret = dp_display_usbpd_attention_cb(&dp->pdev->dev);
+ if (ret == -ECONNRESET) { /* cable unplugged */
+ dp->core_initialized = false;
+ }
}
DRM_DEBUG_DP("hpd_state=%d\n", state);
@@ -707,9 +712,9 @@ static int dp_irq_hpd_handle(struct dp_display_private *dp, u32 data)
static void dp_display_deinit_sub_modules(struct dp_display_private *dp)
{
dp_debug_put(dp->debug);
+ dp_audio_put(dp->audio);
dp_panel_put(dp->panel);
dp_aux_put(dp->aux);
- dp_audio_put(dp->audio);
}
static int dp_init_sub_modules(struct dp_display_private *dp)
@@ -1481,6 +1486,18 @@ int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev,
}
priv->connectors[priv->num_connectors++] = dp_display->connector;
+
+ dp_display->bridge = msm_dp_bridge_init(dp_display, dev, encoder);
+ if (IS_ERR(dp_display->bridge)) {
+ ret = PTR_ERR(dp_display->bridge);
+ DRM_DEV_ERROR(dev->dev,
+ "failed to create dp bridge: %d\n", ret);
+ dp_display->bridge = NULL;
+ return ret;
+ }
+
+ priv->bridges[priv->num_bridges++] = dp_display->bridge;
+
return 0;
}
@@ -1584,8 +1601,8 @@ int msm_dp_display_disable(struct msm_dp *dp, struct drm_encoder *encoder)
}
void msm_dp_display_mode_set(struct msm_dp *dp, struct drm_encoder *encoder,
- struct drm_display_mode *mode,
- struct drm_display_mode *adjusted_mode)
+ const struct drm_display_mode *mode,
+ const struct drm_display_mode *adjusted_mode)
{
struct dp_display_private *dp_display;
diff --git a/drivers/gpu/drm/msm/dp/dp_display.h b/drivers/gpu/drm/msm/dp/dp_display.h
index 8e80e3bac394..e3adcd578a90 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.h
+++ b/drivers/gpu/drm/msm/dp/dp_display.h
@@ -13,6 +13,7 @@
struct msm_dp {
struct drm_device *drm_dev;
struct device *codec_dev;
+ struct drm_bridge *bridge;
struct drm_connector *connector;
struct drm_encoder *encoder;
struct drm_bridge *panel_bridge;
diff --git a/drivers/gpu/drm/msm/dp/dp_drm.c b/drivers/gpu/drm/msm/dp/dp_drm.c
index 76856c4ee1d6..d4d360d19eba 100644
--- a/drivers/gpu/drm/msm/dp/dp_drm.c
+++ b/drivers/gpu/drm/msm/dp/dp_drm.c
@@ -12,6 +12,14 @@
#include "msm_kms.h"
#include "dp_drm.h"
+
+struct msm_dp_bridge {
+ struct drm_bridge bridge;
+ struct msm_dp *dp_display;
+};
+
+#define to_dp_display(x) container_of((x), struct msm_dp_bridge, bridge)
+
struct dp_connector {
struct drm_connector base;
struct msm_dp *dp_display;
@@ -173,3 +181,70 @@ struct drm_connector *dp_drm_connector_init(struct msm_dp *dp_display)
return connector;
}
+
+static void dp_bridge_mode_set(struct drm_bridge *drm_bridge,
+ const struct drm_display_mode *mode,
+ const struct drm_display_mode *adjusted_mode)
+{
+ struct msm_dp_bridge *dp_bridge = to_dp_display(drm_bridge);
+ struct msm_dp *dp_display = dp_bridge->dp_display;
+
+ msm_dp_display_mode_set(dp_display, drm_bridge->encoder, mode, adjusted_mode);
+}
+
+static void dp_bridge_enable(struct drm_bridge *drm_bridge)
+{
+ struct msm_dp_bridge *dp_bridge = to_dp_display(drm_bridge);
+ struct msm_dp *dp_display = dp_bridge->dp_display;
+
+ msm_dp_display_enable(dp_display, drm_bridge->encoder);
+}
+
+static void dp_bridge_disable(struct drm_bridge *drm_bridge)
+{
+ struct msm_dp_bridge *dp_bridge = to_dp_display(drm_bridge);
+ struct msm_dp *dp_display = dp_bridge->dp_display;
+
+ msm_dp_display_pre_disable(dp_display, drm_bridge->encoder);
+}
+
+static void dp_bridge_post_disable(struct drm_bridge *drm_bridge)
+{
+ struct msm_dp_bridge *dp_bridge = to_dp_display(drm_bridge);
+ struct msm_dp *dp_display = dp_bridge->dp_display;
+
+ msm_dp_display_disable(dp_display, drm_bridge->encoder);
+}
+
+static const struct drm_bridge_funcs dp_bridge_ops = {
+ .enable = dp_bridge_enable,
+ .disable = dp_bridge_disable,
+ .post_disable = dp_bridge_post_disable,
+ .mode_set = dp_bridge_mode_set,
+};
+
+struct drm_bridge *msm_dp_bridge_init(struct msm_dp *dp_display, struct drm_device *dev,
+ struct drm_encoder *encoder)
+{
+ int rc;
+ struct msm_dp_bridge *dp_bridge;
+ struct drm_bridge *bridge;
+
+ dp_bridge = devm_kzalloc(dev->dev, sizeof(*dp_bridge), GFP_KERNEL);
+ if (!dp_bridge)
+ return ERR_PTR(-ENOMEM);
+
+ dp_bridge->dp_display = dp_display;
+
+ bridge = &dp_bridge->bridge;
+ bridge->funcs = &dp_bridge_ops;
+ bridge->encoder = encoder;
+
+ rc = drm_bridge_attach(encoder, bridge, NULL, DRM_BRIDGE_ATTACH_NO_CONNECTOR);
+ if (rc) {
+ DRM_ERROR("failed to attach bridge, rc=%d\n", rc);
+ return ERR_PTR(rc);
+ }
+
+ return bridge;
+}
diff --git a/drivers/gpu/drm/msm/dp/dp_hpd.c b/drivers/gpu/drm/msm/dp/dp_hpd.c
index e1c90fa47411..db98a1d431eb 100644
--- a/drivers/gpu/drm/msm/dp/dp_hpd.c
+++ b/drivers/gpu/drm/msm/dp/dp_hpd.c
@@ -32,8 +32,6 @@ int dp_hpd_connect(struct dp_usbpd *dp_usbpd, bool hpd)
hpd_priv = container_of(dp_usbpd, struct dp_hpd_private,
dp_usbpd);
- dp_usbpd->hpd_high = hpd;
-
if (!hpd_priv->dp_cb || !hpd_priv->dp_cb->configure
|| !hpd_priv->dp_cb->disconnect) {
pr_err("hpd dp_cb not initialized\n");
diff --git a/drivers/gpu/drm/msm/dp/dp_hpd.h b/drivers/gpu/drm/msm/dp/dp_hpd.h
index 5bc5bb64680f..8feec5aa5027 100644
--- a/drivers/gpu/drm/msm/dp/dp_hpd.h
+++ b/drivers/gpu/drm/msm/dp/dp_hpd.h
@@ -26,7 +26,6 @@ enum plug_orientation {
* @multi_func: multi-function preferred
* @usb_config_req: request to switch to usb
* @exit_dp_mode: request exit from displayport mode
- * @hpd_high: Hot Plug Detect signal is high.
* @hpd_irq: Change in the status since last message
* @alt_mode_cfg_done: bool to specify alt mode status
* @debug_en: bool to specify debug mode
@@ -39,7 +38,6 @@ struct dp_usbpd {
bool multi_func;
bool usb_config_req;
bool exit_dp_mode;
- bool hpd_high;
bool hpd_irq;
bool alt_mode_cfg_done;
bool debug_en;
diff --git a/drivers/gpu/drm/msm/dp/dp_link.c b/drivers/gpu/drm/msm/dp/dp_link.c
index a5bdfc5029de..d4d31e5bda07 100644
--- a/drivers/gpu/drm/msm/dp/dp_link.c
+++ b/drivers/gpu/drm/msm/dp/dp_link.c
@@ -737,18 +737,25 @@ static int dp_link_parse_sink_count(struct dp_link *dp_link)
return 0;
}
-static void dp_link_parse_sink_status_field(struct dp_link_private *link)
+static int dp_link_parse_sink_status_field(struct dp_link_private *link)
{
int len = 0;
link->prev_sink_count = link->dp_link.sink_count;
- dp_link_parse_sink_count(&link->dp_link);
+ len = dp_link_parse_sink_count(&link->dp_link);
+ if (len < 0) {
+ DRM_ERROR("DP parse sink count failed\n");
+ return len;
+ }
len = drm_dp_dpcd_read_link_status(link->aux,
link->link_status);
- if (len < DP_LINK_STATUS_SIZE)
+ if (len < DP_LINK_STATUS_SIZE) {
DRM_ERROR("DP link status read failed\n");
- dp_link_parse_request(link);
+ return len;
+ }
+
+ return dp_link_parse_request(link);
}
/**
@@ -1023,7 +1030,9 @@ int dp_link_process_request(struct dp_link *dp_link)
dp_link_reset_data(link);
- dp_link_parse_sink_status_field(link);
+ ret = dp_link_parse_sink_status_field(link);
+ if (ret)
+ return ret;
if (link->request.test_requested == DP_TEST_LINK_EDID_READ) {
dp_link->sink_request |= DP_TEST_LINK_EDID_READ;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.