[PATCH 0/8] Allow link the it66121 display bridge driver as a lib

Sui Jingfeng
2023-11-14T15:09:48Z

From: Sui Jingfeng <suijingfeng@loongson.cn>

The goal is to make this driver usuable on non-DT based systems, while
without introduce duplication and preserve code sharing. The first seven
patch just doing trivial cleanup, the last patch try to solve the mentioned
problem by allowing static linking. Tested on a ACPI-based platform:

$ dmseg | grep drm

ACPI: bus type drm_connector registered
loongson 0000:00:06.1: [drm] dc: 264MHz, gmc: 529MHz, gpu: 529MHz
loongson 0000:00:06.1: [drm] Dedicated vram start: 0xe0030000000, size: 64MiB
loongson 0000:00:06.1: [drm] Loongson VBIOS version: 0.3
loongson 0000:00:06.1: [drm] Loongson VBIOS: has 8 DCBs
loongson 0000:00:06.1: [drm] VRAM: 4096 pages ready
loongson 0000:00:06.1: [drm] GTT: 32768 pages ready
loongson 0000:00:06.1: [drm] lsdc-i2c0(sda pin mask=1, scl pin mask=2) created
loongson 0000:00:06.1: [drm] lsdc-i2c1(sda pin mask=4, scl pin mask=8) created
loongson 0000:00:06.1: [drm] DisplayPipe-0 has DVO-0 connector
i2c 1-004c: IT66121 probed, chip id: 0x4954:0x612, revision: 1
loongson 0000:00:06.1: [drm] DisplayPipe-1 has IT66121@4c attached
loongson 0000:00:06.1: [drm] Total 2 outputs
loongson 0000:00:06.1: [drm] registered irq: 40
[drm] Initialized loongson 1.0.0 20220701 for 0000:00:06.1 on minor 0
loongson 0000:00:06.1: [drm] fb0: loongsondrmfb frame buffer device

Sui Jingfeng (8):
drm/bridge: it66121: Use dev replace ctx->dev in the it66121_probe()
drm/bridge: it66121: Add bridge_to_it66121() helper and use it
drm/bridge: it66121: Add a helper function to read bus width
drm/bridge: it66121: Add a helper function to get the next bridge
drm/bridge: it66121: Add a helper function to read chip id
drm/bridge: it66121: Add a helper to initialize the DRM bridge
structure
drm/bridge: it66121: Add another implementation for getting match data
drm/bridge: it66121: Allow link this driver as a lib

drivers/gpu/drm/bridge/ite-it66121.c | 340 +++++++++++++++++++--------
include/drm/bridge/ite-it66121.h | 17 ++
2 files changed, 258 insertions(+), 99 deletions(-)
create mode 100644 include/drm/bridge/ite-it66121.h

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2.34.1