kernel/linux.git/drivers/gpu/drm/bridge/analogix, branch v7.1

drm/bridge: analogix_dp: Apply DP helper APIs to get adjusted voltages and pre-emphasises

2026-03-25T13:05:09+00:00

Replace analogix_dp_get_adjust_request_voltage() and analogix_dp_get_adjust_request_pre_emphasis() with existing DP helper APIs with the same function. Signed-off-by: Damon Ding Tested-by: Marek Szyprowski Reviewed-by: Dmitry Baryshkov Reviewed-by: Luca Ceresoli Link: https://patch.msgid.link/20251110085823.1197472-5-damon.ding@rock-chips.com Signed-off-by: Luca Ceresoli

drm/bridge: analogix_dp: Apply DP helper API drm_dp_channel_eq_ok()

2026-03-25T13:05:09+00:00

Use existing DP helper API instead of analogix_dp_channel_eq_ok() with the same function. In addtion, remove unused function analogix_dp_get_lane_status() Signed-off-by: Damon Ding Tested-by: Marek Szyprowski Reviewed-by: Dmitry Baryshkov Reviewed-by: Luca Ceresoli Link: https://patch.msgid.link/20251110085823.1197472-4-damon.ding@rock-chips.com Signed-off-by: Luca Ceresoli

drm/bridge: analogix_dp: Apply DP helper API drm_dp_clock_recovery_ok()

2026-03-25T13:05:09+00:00

Use existing DP helper API instead of analogix_dp_clock_recovery_ok() with the same function. Signed-off-by: Damon Ding Tested-by: Marek Szyprowski Reviewed-by: Dmitry Baryshkov Reviewed-by: Luca Ceresoli Link: https://patch.msgid.link/20251110085823.1197472-3-damon.ding@rock-chips.com Signed-off-by: Luca Ceresoli

drm/bridge: analogix_dp: Apply DP helper API drm_dp_dpcd_read_link_status()

2026-03-25T13:05:08+00:00

Use existing DP helper API to read link status related DPCDs. Signed-off-by: Damon Ding Tested-by: Marek Szyprowski Reviewed-by: Dmitry Baryshkov Reviewed-by: Luca Ceresoli Link: https://patch.msgid.link/20251110085823.1197472-2-damon.ding@rock-chips.com Signed-off-by: Luca Ceresoli

drm/bridge: analogix_dp: Reuse &link_train.training_lane[] to set DPCD DP_TRAINING_LANEx_SET

2026-03-25T11:57:55+00:00

In analogix_dp_link_start(), &link_train.training_lane[] is used to set phy PE/VS configurations, and buf[] is initialized with the same values to set DPCD DP_TRAINING_LANEx_SET. It makes sense to reuse &link_train.training_lane[] to set DPCD DP_TRAINING_LANEx_SET, which can remove the redundant assignments and make codes more concise. Signed-off-by: Damon Ding Tested-by: Marek Szyprowski Reviewed-by: Dmitry Baryshkov Reviewed-by: Luca Ceresoli Link: https://patch.msgid.link/20251111022103.1350183-1-damon.ding@rock-chips.com Signed-off-by: Luca Ceresoli

drm/bridge: analogix: Convert to drm_output_color_format

2026-03-24T12:54:31+00:00

Now that we introduced a new drm_output_color_format enum to represent what DRM_COLOR_FORMAT_* bits were representing, we can switch to the new enum. The main difference is that while DRM_COLOR_FORMAT_ was a bitmask, drm_output_color_format is a proper enum. However, the enum was done is such a way than DRM_COLOR_FORMAT_X = BIT(DRM_OUTPUT_COLOR_FORMAT_X) so the transitition is easier. The only thing we need to consider is if the original code meant to use that value as a bitmask, in which case we do need to keep the bit shift, or as a discriminant in which case we don't. Acked-by: Jani Nikula Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20260305-drm-rework-color-formats-v3-6-f3935f6db579@kernel.org Signed-off-by: Maxime Ripard

drm: bridge: anx7625: correctly detect if PD can be disabled

2026-03-11T02:19:13+00:00

During initial checks the ANX7625 bridge can be powered on before setting up the Type-C port. At this point, when anx7625_ocm_loading_check() checks if it can disable PD or not, it will notice that typec_port is not set and disable PD, breaking orientation and HPD handling. Unify the check between anx7625_ocm_loading_check() anx7625_i2c_probe() and anx7625_typec_register() and check for the presence of the "connector" node. Fixes: 8ad0f7d2e6fd ("drm: bridge: anx7625: implement message sending") Reviewed-by: Neil Armstrong Reviewed-by: Xin Ji Tested-by: Loic Poulain Link: https://patch.msgid.link/20260211-anx7625-fix-pd-v1-1-1dd31451b06f@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov

drm: bridge: anx7625: don't crash if Type-C port is not used

2026-03-11T02:18:48+00:00

The typec_set_*() functions do not tolerate being passed the NULL typec_port instance. However, if CONFIG_TYPEC is enabled, but anx7625 DT node doesn't have the usb-c connector fwnode, then typec_port remains NULL, crashing the kernel. Prevent calling typec_set_foo() functions by checking that ctx->typec_port is not NULL in anx7625_typec_set_status(). Call trace: typec_set_orientation+0x18/0x68 (P) anx7625_typec_set_status+0x108/0x13c anx7625_work_func+0x124/0x438 process_one_work+0x214/0x648 worker_thread+0x1b4/0x358 kthread+0x14c/0x214 ret_from_fork+0x10/0x20 Code: 910003fd a90153f3 aa0003f3 2a0103f4 (f9431400) Fixes: f81455b2d332 ("drm: bridge: anx7625: implement minimal Type-C support") Reported-by: Salendarsingh Gaud Signed-off-by: Loic Poulain [db: dropped chunk anx7625_typec_unregister(), wrote commit message] Cc: Amit Kucheria Reviewed-by: Neil Armstrong Link: https://patch.msgid.link/20260215-anx-fix-no-typec-v1-1-75172a5ca88b@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov

drm: bridge: anx7625: enforce CONFIG_USB_ROLE_SWITCH dependency

2026-03-11T02:18:23+00:00

When CONFIG_TYPEC is enabled, but USB_ROLE_SWITCH=m, the anx7625 driver fails to link as built-in: aarch64-linux-ld: drivers/gpu/drm/bridge/analogix/anx7625.o: in function `anx7625_i2c_remove': anx7625.c:(.text+0x6ec): undefined reference to `usb_role_switch_put' aarch64-linux-ld: drivers/gpu/drm/bridge/analogix/anx7625.o: in function `anx7625_typec_set_status': anx7625.c:(.text+0x3080): undefined reference to `usb_role_switch_set_role' aarch64-linux-ld: drivers/gpu/drm/bridge/analogix/anx7625.o: in function `anx7625_i2c_probe': anx7625.c:(.text+0x5368): undefined reference to `fwnode_usb_role_switch_get' The problem is that both dependencies are optional in the sense of allowing the anx7625 driver to call the exported interfaces to be used from a loadable module, but cannot work for built-in drivers. It would be possible to handle all nine combinations of the CONFIG_TYPEC and CONFIG_USB_ROLE_SWITCH tristate options, but that does add a lot of complexity that seems unnecessary when in reality any user of this driver would have both enabled anyway. Turn both dependencies into hard 'depends on' here to only allow configurations where it's possible to actually use them, and remove the misguided IS_REACHABLE() check that did nothing here. Fixes: f81455b2d332 ("drm: bridge: anx7625: implement minimal Type-C support") Signed-off-by: Arnd Bergmann Reviewed-by: Neil Armstrong Link: https://patch.msgid.link/20260304083604.724519-1-arnd@kernel.org Signed-off-by: Dmitry Baryshkov

drm: bridge: anx7625: implement message sending

2026-02-07T10:38:38+00:00

Swapping the data role requires sending the message to the other USB-C side. Implement sending these messages through the OCM. The code is largely based on the anx7411.c USB-C driver. Reviewed-by: Xin Ji Link: https://patch.msgid.link/20260121-anx7625-typec-v2-3-d14f31256a17@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov