This series introduces:
- A device tree binding YAML file describing the hardware
- A new DRM bridge driver implementing the basic functionality
LT9611C(EX/UXD) is an I2C-controlled chip that Receiver signal/dual port
mipi dsi and output hdmi, differences in hardware features:
- LT9611C: supports 1-port mipi dsi to hdmi 1.4
- LT9611EX: supports 2-port mipi dsi to hdmi 1.4
- LT9611UXD: supports 2-port mipi dsi to hdmi 1.4/2.0
Changes in v7:
- Use i2c_get_match_data() for chip type initialization
- Implement hdmi_write_hdmi_infoframe/hdmi_clear_hdmi_infoframe
- Use drm_atomic_commit in bridge callbacks
- Removing redundant lt9611c_reset() call and cleanup in probe error
path
- Populate bridge.vendor and bridge.product
- implement hpd_enable callback
- fix DT parsing and bridge refcount
- Removed pre_enable and post_disable callbacks, it was affecting hpd
as regulator was disabled
- Changed reset gpio enablement and lt9611c_reset api.
- Link to v6:
https://lore.kernel.org/all/[email protected]/
Changes in v6:
- dt-binding:
1. sorted the compatible list alphabetically. [Dmitry]
- Link to v5:
https://lore.kernel.org/lkml/[email protected]/
Changes in v5:
- drm/bridge:
1. use #define FW_FILE "Lontium/lt9611c_fw.bin" to match linux-firmware
[Dmitry]
2. add atomic state management
- Link to v4:
https://lore.kernel.org/lkml/[email protected]/
Changes in v4:
- dt-binding:
1. fix commit message
[Krzysztof]
- drm/bridge:
1. use lt9611c_fw.bin
[Dmitry]
3. use enum lt9611_chip_type
4. remove *fw from the lt9611c struct
5. use read_poll_timeout and -ETIMEDOUT
6. replace mutex_lock with guard(mutex) in some places
7. switch to ARRAY_SIZE instead of specifying lengths directly
8. use dev_err_probe
9. add clear functions for AVI and audio infoframes
10. add DRM_BRIDGE_OP_HDMI and remove .hpd_notify
11. replace "GPL v2" with "GPL"
- Link to v3:
https://lore.kernel.org/lkml/[email protected]/
Changes in v3:
- dt-binding:
1. lt9611c(ex/uxd) content merged into lontium,lt9611.yaml
- drm/bridge:
1. Drop the licence text, only use SPDX header
2. Sort the headers
3. Use library functions for crc8
4. Use paged writes as implemented for LT9611C(EX/UXD)
5. Use HDMI audio helpers
6. Replace devm_kzalloc with devm_drm_bridge_alloc
7. Remove extra kthread
- Link to v1:
https://lore.kernel.org/lkml/[email protected]/
Changes in v2:
1. Forget modify code, operation error, Please disregard this submit.
Changes in v1:
- dt-binding:
1. Submit the first version of the code.
- drm/bridge:
1. Submit the first version of the code.
Signed-off-by: Mohit Dsor <[email protected]>
---
Sunyun Yang (2):
dt-bindings: bridge: Add Lontium LT9611C(EX/UXD) MIPI DSI to HDMI driver
drm/bridge: Add Lontium LT9609C(EX/UXD) MIPI DSI to HDMI driver
.../bindings/display/bridge/lontium,lt9611.yaml | 8 +-
MAINTAINERS | 7 +
drivers/gpu/drm/bridge/Kconfig | 18 +
drivers/gpu/drm/bridge/Makefile | 1 +
drivers/gpu/drm/bridge/lontium-lt9611c.c | 1293 ++++++++++++++++++++
5 files changed, 1325 insertions(+), 2 deletions(-)
---
base-commit: 34e27b90552acf21bd73aac395667c8aae6da480
change-id: 20260708-lt9611c-v7-ff76b2d1bf5f
Best regards,
--
Mohit Dsor <[email protected]>
