Add drm properties for DisplayPort synchronous mode and bpc
configurations.
Signed-off-by: Hyun Kwon <hyun.kwon@xxxxxxxxxx>
---
v2
- Split from the original patch
---
---
drivers/gpu/drm/xlnx/zynqmp_dp.c | 116 ++++++++++++++++++++++++++++++++++++++-
1 file changed, 114 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/xlnx/zynqmp_dp.c b/drivers/gpu/drm/xlnx/zynqmp_dp.c
index 9c9f4df..e1e8237 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_dp.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_dp.c
@@ -302,6 +302,8 @@ struct zynqmp_dp_config {
* struct zynqmp_dp - Xilinx DisplayPort core
* @encoder: the drm encoder structure
* @connector: the drm connector structure
+ * @sync_prop: synchronous mode property
+ * @bpc_prop: bpc mode property
* @dev: device structure
* @dpsub: Display subsystem
* @drm: DRM core
@@ -323,6 +325,8 @@ struct zynqmp_dp_config {
struct zynqmp_dp {
struct drm_encoder encoder;
struct drm_connector connector;
+ struct drm_property *sync_prop;
+ struct drm_property *bpc_prop;
struct device *dev;
struct zynqmp_dpsub *dpsub;
struct drm_device *drm;
@@ -1116,6 +1120,37 @@ static void zynqmp_dp_update_misc(struct zynqmp_dp *dp)
}
/**
+ * zynqmp_dp_set_sync_mode - Set the sync mode bit in the software misc state
+ * @dp: DisplayPort IP core structure
+ * @mode: flag if the sync mode should be on or off
+ *
+ * Set the bit in software misc state. To apply to hardware,
+ * zynqmp_dp_update_misc() should be called.
+ */
+static void zynqmp_dp_set_sync_mode(struct zynqmp_dp *dp, bool mode)
+{
+ struct zynqmp_dp_config *config = &dp->config;
+
+ if (mode)
+ config->misc0 |= ZYNQMP_DP_TX_MAIN_STREAM_MISC0_SYNC;
+ else
+ config->misc0 &= ~ZYNQMP_DP_TX_MAIN_STREAM_MISC0_SYNC;
+}
+
+/**
+ * zynqmp_dp_get_sync_mode - Get the sync mode state
+ * @dp: DisplayPort IP core structure
+ *
+ * Return: true if the sync mode is on, or false
+ */
+static bool zynqmp_dp_get_sync_mode(struct zynqmp_dp *dp)
+{
+ struct zynqmp_dp_config *config = &dp->config;
+
+ return !!(config->misc0 & ZYNQMP_DP_TX_MAIN_STREAM_MISC0_SYNC);
+}
+
+/**
* zynqmp_dp_set_bpc - Set bpc value in software misc state
* @dp: DisplayPort IP core structure
* @bpc: bits per component
@@ -1165,6 +1200,17 @@ static u8 zynqmp_dp_set_bpc(struct zynqmp_dp *dp, u8 bpc)
}
/**
+ * zynqmp_dp_get_bpc - Set bpc value from software state
+ * @dp: DisplayPort IP core structure
+ *
+ * Return: current bpc value
+ */
+static u8 zynqmp_dp_get_bpc(struct zynqmp_dp *dp)
+{
+ return dp->config.bpc;
+}
+
+/**
* zynqmp_dp_encoder_mode_set_transfer_unit - Set the transfer unit values
* @dp: DisplayPort IP core structure
* @mode: requested display mode
@@ -1368,6 +1414,51 @@ static void zynqmp_dp_connector_destroy(struct drm_connector *connector)
drm_connector_cleanup(connector);
}
+static int
+zynqmp_dp_connector_atomic_set_property(struct drm_connector *connector,
+ struct drm_connector_state *state,
+ struct drm_property *property,
+ uint64_t val)
+{
+ struct zynqmp_dp *dp = connector_to_dp(connector);
+ int ret;
+
+ if (property == dp->sync_prop) {
+ zynqmp_dp_set_sync_mode(dp, val);
+ } else if (property == dp->bpc_prop) {
+ u8 bpc;
+
+ bpc = zynqmp_dp_set_bpc(dp, val);
+ if (bpc) {
+ drm_object_property_set_value(&connector->base,
+ property, bpc);
+ ret = -EINVAL;
+ }
+ } else {
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int
+zynqmp_dp_connector_atomic_get_property(struct drm_connector *connector,
+ const struct drm_connector_state *state,
+ struct drm_property *property,
+ uint64_t *val)
+{
+ struct zynqmp_dp *dp = connector_to_dp(connector);
+
+ if (property == dp->sync_prop)
+ *val = zynqmp_dp_get_sync_mode(dp);
+ else if (property == dp->bpc_prop)
+ *val = zynqmp_dp_get_bpc(dp);
+ else
+ return -EINVAL;
+
+ return 0;
+}
+
static const struct drm_connector_funcs zynqmp_dp_connector_funcs = {
.detect = zynqmp_dp_connector_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
@@ -1375,6 +1466,8 @@ static const struct drm_connector_funcs zynqmp_dp_connector_funcs = {
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
.reset = drm_atomic_helper_connector_reset,
+ .atomic_set_property = zynqmp_dp_connector_atomic_set_property,
+ .atomic_get_property = zynqmp_dp_connector_atomic_get_property,
};
static struct drm_connector_helper_funcs zynqmp_dp_connector_helper_funcs = {
@@ -1520,6 +1613,13 @@ static void zynqmp_dp_hpd_work_func(struct work_struct *work)
drm_helper_hpd_irq_event(dp->drm);
}
+static struct drm_prop_enum_list zynqmp_dp_bpc_enum[] = {
+ { 6, "6BPC" },
+ { 8, "8BPC" },
+ { 10, "10BPC" },
+ { 12, "12BPC" },
+};
+
int zynqmp_dp_bind(struct device *dev, struct device *master, void *data)
{
struct zynqmp_dpsub *dpsub = dev_get_drvdata(dev);
@@ -1556,21 +1656,31 @@ int zynqmp_dp_bind(struct device *dev, struct device *master, void *data)
connector->dpms = DRM_MODE_DPMS_OFF;
dp->drm = drm;
+ dp->sync_prop = drm_property_create_bool(drm, 0, "sync");
+ dp->bpc_prop = drm_property_create_enum(drm, 0, "bpc",
+ zynqmp_dp_bpc_enum,
+ ARRAY_SIZE(zynqmp_dp_bpc_enum));
+
dp->config.misc0 &= ~ZYNQMP_DP_TX_MAIN_STREAM_MISC0_SYNC;
+ drm_object_attach_property(&connector->base, dp->sync_prop, false);
ret = zynqmp_dp_set_bpc(dp, 8);
+ drm_object_attach_property(&connector->base, dp->bpc_prop,
+ ret ? ret : 8);
zynqmp_dp_update_bpp(dp);
/* This enables interrupts, so should be called after DRM init */
ret = zynqmp_dp_init_aux(dp);
if (ret) {
dev_err(dp->dev, "failed to initialize DP aux");
- goto error_connector;
+ goto error_prop;
}
INIT_DELAYED_WORK(&dp->hpd_work, zynqmp_dp_hpd_work_func);
return 0;
-error_connector:
+error_prop:
+ drm_property_destroy(dp->drm, dp->bpc_prop);
+ drm_property_destroy(dp->drm, dp->sync_prop);
zynqmp_dp_connector_destroy(&dp->connector);
error_encoder:
drm_encoder_cleanup(&dp->encoder);
@@ -1585,6 +1695,8 @@ void zynqmp_dp_unbind(struct device *dev, struct device *master, void *data)
cancel_delayed_work_sync(&dp->hpd_work);
disable_irq(dp->irq);
zynqmp_dp_exit_aux(dp);
+ drm_property_destroy(dp->drm, dp->bpc_prop);
+ drm_property_destroy(dp->drm, dp->sync_prop);
zynqmp_dp_connector_destroy(&dp->connector);
drm_encoder_cleanup(&dp->encoder);
}
--
2.7.4
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