On 17/05/2023 07:48, Aradhya Bhatia wrote:
Hi Neil,
On 16-May-23 12:54, Neil Armstrong wrote:
On 09/05/2023 11:30, Aradhya Bhatia wrote:
From: Nikhil Devshatwar <nikhil.nd@xxxxxx>
input_bus_flags are specified in drm_bridge_timings (legacy) as well
as drm_bridge_state->input_bus_cfg.flags
The flags from the timings will be deprecated. Bridges are supposed
to validate and set the bridge state flags from atomic_check.
Signed-off-by: Nikhil Devshatwar <nikhil.nd@xxxxxx>
[a-bhatia1: replace timings in cdns_mhdp_platform_info by
input_bus_flags]
Signed-off-by: Aradhya Bhatia <a-bhatia1@xxxxxx>
---
Notes:
changes from v5:
* removed the wrongly addded return statement in tfp410 driver.
* replaced the timings field in cdns_mhdp_platform_info by
input_bus_flags field, in order to get rid of bridge->timings
altogether.
drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c | 11 ++++++++---
drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.h | 2 +-
drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-j721e.c | 9 ++++-----
drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-j721e.h | 2 +-
4 files changed, 14 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
index 623e4235c94f..a677b1267525 100644
--- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
+++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
@@ -2189,6 +2189,13 @@ static int cdns_mhdp_atomic_check(struct
drm_bridge *bridge,
return -EINVAL;
}
+ /*
+ * There might be flags negotiation supported in future.
+ * Set the bus flags in atomic_check statically for now.
+ */
+ if (mhdp->info)
+ bridge_state->input_bus_cfg.flags =
*mhdp->info->input_bus_flags;
+
mutex_unlock(&mhdp->link_mutex);
return 0;
}
@@ -2554,8 +2561,6 @@ static int cdns_mhdp_probe(struct
platform_device *pdev)
mhdp->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID |
DRM_BRIDGE_OP_HPD;
mhdp->bridge.type = DRM_MODE_CONNECTOR_DisplayPort;
- if (mhdp->info)
- mhdp->bridge.timings = mhdp->info->timings;
Won't this cause a breakage because at this point in time
bridge.timings->input_bus_flags
seems to be still used by tidss right ?
tidss was using the bridge.timings->input_bus_flags before the 7th
patch[1] in this series.
After the patch, it only relies on bridge_state and display_info for bus
flags and formats.
OK thanks, then:
Reviewed-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
if you resend a new version, please add this info in the commit message.
Neil
Regards
Aradhya
[1]: https://lore.kernel.org/all/20230509093036.3303-8-a-bhatia1@xxxxxx/
ret = phy_init(mhdp->phy);
if (ret) {
@@ -2642,7 +2647,7 @@ static const struct of_device_id mhdp_ids[] = {
#ifdef CONFIG_DRM_CDNS_MHDP8546_J721E
{ .compatible = "ti,j721e-mhdp8546",
.data = &(const struct cdns_mhdp_platform_info) {
- .timings = &mhdp_ti_j721e_bridge_timings,
+ .input_bus_flags = &mhdp_ti_j721e_bridge_input_bus_flags,
.ops = &mhdp_ti_j721e_ops,
},
},
diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.h
b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.h
index bedddd510d17..bad2fc0c7306 100644
--- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.h
+++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.h
@@ -336,7 +336,7 @@ struct cdns_mhdp_bridge_state {
};
struct cdns_mhdp_platform_info {
- const struct drm_bridge_timings *timings;
+ const u32 *input_bus_flags;
const struct mhdp_platform_ops *ops;
};
diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-j721e.c
b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-j721e.c
index dfe1b59514f7..12d04be4e242 100644
--- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-j721e.c
+++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-j721e.c
@@ -71,8 +71,7 @@ const struct mhdp_platform_ops mhdp_ti_j721e_ops = {
.disable = cdns_mhdp_j721e_disable,
};
-const struct drm_bridge_timings mhdp_ti_j721e_bridge_timings = {
- .input_bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE |
- DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE |
- DRM_BUS_FLAG_DE_HIGH,
-};
+const u32
+mhdp_ti_j721e_bridge_input_bus_flags =
DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE |
+ DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE |
+ DRM_BUS_FLAG_DE_HIGH;
diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-j721e.h
b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-j721e.h
index 97d20d115a24..5ddca07a4255 100644
--- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-j721e.h
+++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-j721e.h
@@ -14,6 +14,6 @@
struct mhdp_platform_ops;
extern const struct mhdp_platform_ops mhdp_ti_j721e_ops;
-extern const struct drm_bridge_timings mhdp_ti_j721e_bridge_timings;
+extern const u32 mhdp_ti_j721e_bridge_input_bus_flags;
#endif /* !CDNS_MHDP8546_J721E_H */
