[PATCH v3 3/5] drm/msm/dp: Support up to 3 DP controllers
Bjorn Andersson
bjorn.andersson at linaro.org
Fri Oct 1 18:00:56 UTC 2021
Based on the removal of the g_dp_display and the movement of the
priv->dp lookup into the DP code it's now possible to have multiple
DP instances.
In line with the other controllers in the MSM driver, introduce a
per-compatible list of base addresses which is used to resolve the
"instance id" for the given DP controller. This instance id is used as
index in the priv->dp[] array.
Then extend the initialization code to initialize struct drm_encoder for
each of the registered priv->dp[] and update the logic for associating
each struct msm_dp with the struct dpu_encoder_virt.
Lastly, bump the number of struct msm_dp instances carries by priv->dp
to 3, the currently known maximum number of controllers found in a
Qualcomm SoC.
Signed-off-by: Bjorn Andersson <bjorn.andersson at linaro.org>
---
Changes since v2:
- Added MSM_DRM_DP_COUNT to link the two 3s
- Moved NULL check for msm_dp_debugfs_init() to the call site
- Made struct dp_display_private->id unsigned
I also implemented added connector_type to each of the DP instances and
propagated this to dp_drm_connector_init() but later dropped this again per
Doug's suggestion that we'll base this on the presence/absence of a associated
drm bridge or panel.
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 2 +-
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 66 +++++++++++--------
.../gpu/drm/msm/disp/msm_disp_snapshot_util.c | 8 ++-
drivers/gpu/drm/msm/dp/dp_display.c | 44 ++++++++++++-
drivers/gpu/drm/msm/msm_drv.h | 4 +-
5 files changed, 90 insertions(+), 34 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index b7f33da2799c..9cd9539a1504 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -2173,7 +2173,7 @@ int dpu_encoder_setup(struct drm_device *dev, struct drm_encoder *enc,
dpu_encoder_vsync_event_handler,
0);
else if (disp_info->intf_type == DRM_MODE_ENCODER_TMDS)
- dpu_enc->dp = priv->dp;
+ dpu_enc->dp = priv->dp[disp_info->h_tile_instance[0]];
INIT_DELAYED_WORK(&dpu_enc->delayed_off_work,
dpu_encoder_off_work);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index f655adbc2421..875b07e7183d 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -188,6 +188,7 @@ static int dpu_kms_debugfs_init(struct msm_kms *kms, struct drm_minor *minor)
struct dentry *entry;
struct drm_device *dev;
struct msm_drm_private *priv;
+ int i;
if (!p)
return -EINVAL;
@@ -203,8 +204,10 @@ static int dpu_kms_debugfs_init(struct msm_kms *kms, struct drm_minor *minor)
dpu_debugfs_vbif_init(dpu_kms, entry);
dpu_debugfs_core_irq_init(dpu_kms, entry);
- if (priv->dp)
- msm_dp_debugfs_init(priv->dp, minor);
+ for (i = 0; i < ARRAY_SIZE(priv->dp); i++) {
+ if (priv->dp[i])
+ msm_dp_debugfs_init(priv->dp[i], minor);
+ }
return dpu_core_perf_debugfs_init(dpu_kms, entry);
}
@@ -544,35 +547,42 @@ static int _dpu_kms_initialize_displayport(struct drm_device *dev,
{
struct drm_encoder *encoder = NULL;
struct msm_display_info info;
- int rc = 0;
+ int rc;
+ int i;
- if (!priv->dp)
- return rc;
+ for (i = 0; i < ARRAY_SIZE(priv->dp); i++) {
+ if (!priv->dp[i])
+ continue;
- encoder = dpu_encoder_init(dev, DRM_MODE_ENCODER_TMDS);
- if (IS_ERR(encoder)) {
- DPU_ERROR("encoder init failed for dsi display\n");
- return PTR_ERR(encoder);
- }
+ encoder = dpu_encoder_init(dev, DRM_MODE_ENCODER_TMDS);
+ if (IS_ERR(encoder)) {
+ DPU_ERROR("encoder init failed for dsi display\n");
+ return PTR_ERR(encoder);
+ }
- memset(&info, 0, sizeof(info));
- rc = msm_dp_modeset_init(priv->dp, dev, encoder);
- if (rc) {
- DPU_ERROR("modeset_init failed for DP, rc = %d\n", rc);
- drm_encoder_cleanup(encoder);
- return rc;
- }
+ memset(&info, 0, sizeof(info));
+ rc = msm_dp_modeset_init(priv->dp[i], dev, encoder);
+ if (rc) {
+ DPU_ERROR("modeset_init failed for DP, rc = %d\n", rc);
+ drm_encoder_cleanup(encoder);
+ return rc;
+ }
- priv->encoders[priv->num_encoders++] = encoder;
+ priv->encoders[priv->num_encoders++] = encoder;
- info.num_of_h_tiles = 1;
- info.capabilities = MSM_DISPLAY_CAP_VID_MODE;
- info.intf_type = encoder->encoder_type;
- rc = dpu_encoder_setup(dev, encoder, &info);
- if (rc)
- DPU_ERROR("failed to setup DPU encoder %d: rc:%d\n",
- encoder->base.id, rc);
- return rc;
+ info.num_of_h_tiles = 1;
+ info.h_tile_instance[0] = i;
+ info.capabilities = MSM_DISPLAY_CAP_VID_MODE;
+ info.intf_type = encoder->encoder_type;
+ rc = dpu_encoder_setup(dev, encoder, &info);
+ if (rc) {
+ DPU_ERROR("failed to setup DPU encoder %d: rc:%d\n",
+ encoder->base.id, rc);
+ return rc;
+ }
+ }
+
+ return 0;
}
/**
@@ -792,6 +802,7 @@ static int dpu_irq_postinstall(struct msm_kms *kms)
{
struct msm_drm_private *priv;
struct dpu_kms *dpu_kms = to_dpu_kms(kms);
+ int i;
if (!dpu_kms || !dpu_kms->dev)
return -EINVAL;
@@ -800,7 +811,8 @@ static int dpu_irq_postinstall(struct msm_kms *kms)
if (!priv)
return -EINVAL;
- msm_dp_irq_postinstall(priv->dp);
+ for (i = 0; i < ARRAY_SIZE(priv->dp); i++)
+ msm_dp_irq_postinstall(priv->dp[i]);
return 0;
}
diff --git a/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c b/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c
index cabe15190ec1..2e1acb1bc390 100644
--- a/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c
+++ b/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c
@@ -126,8 +126,12 @@ void msm_disp_snapshot_capture_state(struct msm_disp_state *disp_state)
priv = drm_dev->dev_private;
kms = priv->kms;
- if (priv->dp)
- msm_dp_snapshot(disp_state, priv->dp);
+ for (i = 0; i < ARRAY_SIZE(priv->dp); i++) {
+ if (!priv->dp[i])
+ continue;
+
+ msm_dp_snapshot(disp_state, priv->dp[i]);
+ }
for (i = 0; i < ARRAY_SIZE(priv->dsi); i++) {
if (!priv->dsi[i])
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index 5d3ee5ef07c2..ff3477474c5d 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -78,6 +78,8 @@ struct dp_display_private {
char *name;
int irq;
+ unsigned int id;
+
/* state variables */
bool core_initialized;
bool hpd_irq_on;
@@ -115,8 +117,18 @@ struct dp_display_private {
struct dp_audio *audio;
};
+struct msm_dp_config {
+ phys_addr_t io_start[MSM_DRM_DP_COUNT];
+ size_t num_descs;
+};
+
+static const struct msm_dp_config sc7180_dp_cfg = {
+ .io_start = { 0x0ae90000 },
+ .num_descs = 1,
+};
+
static const struct of_device_id dp_dt_match[] = {
- {.compatible = "qcom,sc7180-dp"},
+ { .compatible = "qcom,sc7180-dp", .data = &sc7180_dp_cfg },
{}
};
@@ -211,7 +223,7 @@ static int dp_display_bind(struct device *dev, struct device *master,
dp->dp_display.drm_dev = drm;
priv = drm->dev_private;
- priv->dp = &(dp->dp_display);
+ priv->dp[dp->id] = &(dp->dp_display);
rc = dp->parser->parse(dp->parser);
if (rc) {
@@ -249,7 +261,7 @@ static void dp_display_unbind(struct device *dev, struct device *master,
dp_power_client_deinit(dp->power);
dp_aux_unregister(dp->aux);
- priv->dp = NULL;
+ priv->dp[dp->id] = NULL;
}
static const struct component_ops dp_display_comp_ops = {
@@ -1180,10 +1192,31 @@ int dp_display_request_irq(struct msm_dp *dp_display)
return 0;
}
+static int dp_display_find_id(struct platform_device *pdev)
+{
+ const struct msm_dp_config *cfg = of_device_get_match_data(&pdev->dev);
+ struct resource *res;
+ int i;
+
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -EINVAL;
+
+ for (i = 0; i < cfg->num_descs; i++) {
+ if (cfg->io_start[i] == res->start)
+ return i;
+ }
+
+ dev_err(&pdev->dev, "unknown displayport instance\n");
+ return -EINVAL;
+}
+
static int dp_display_probe(struct platform_device *pdev)
{
int rc = 0;
struct dp_display_private *dp;
+ int id;
if (!pdev || !pdev->dev.of_node) {
DRM_ERROR("pdev not found\n");
@@ -1194,8 +1227,13 @@ static int dp_display_probe(struct platform_device *pdev)
if (!dp)
return -ENOMEM;
+ id = dp_display_find_id(pdev);
+ if (id < 0)
+ return id;
+
dp->pdev = pdev;
dp->name = "drm_dp";
+ dp->id = id;
rc = dp_init_sub_modules(dp);
if (rc) {
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index 8b005d1ac899..b20a6dd221f7 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -135,6 +135,8 @@ struct msm_drm_thread {
struct kthread_worker *worker;
};
+#define MSM_DRM_DP_COUNT 3
+
struct msm_drm_private {
struct drm_device *dev;
@@ -161,7 +163,7 @@ struct msm_drm_private {
/* DSI is shared by mdp4 and mdp5 */
struct msm_dsi *dsi[2];
- struct msm_dp *dp;
+ struct msm_dp *dp[MSM_DRM_DP_COUNT];
/* when we have more than one 'msm_gpu' these need to be an array: */
struct msm_gpu *gpu;
--
2.29.2
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