Re: [v14, 01/17] drm: bridge: analogix/dp: split exynos dp driver to bridge directory

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Hi Guenter

On 03/31/2016 04:32 AM, Guenter Roeck wrote:
Hi,

On Mon, Feb 15, 2016 at 07:09:36PM +0800, Yakir Yang wrote:
Split the dp core driver from exynos directory to bridge directory,
and rename the core driver to analogix_dp_*, rename the platform
code to exynos_dp.

Beside the new analogix_dp driver would export six hooks.
"analogix_dp_bind()" and "analogix_dp_unbind()"
"analogix_dp_suspned()" and "analogix_dp_resume()"
"analogix_dp_detect()" and "analogix_dp_get_modes()"

The bind/unbind symbols is used for analogix platform driver to connect
with analogix_dp core driver. And the detect/get_modes is used for analogix
platform driver to init the connector.

They reason why connector need register in helper driver is rockchip drm
haven't implement the atomic API, but Exynos drm have implement it, so
there would need two different connector helper functions, that's why we
leave the connector register in helper driver.

Signed-off-by: Yakir Yang <ykk@xxxxxxxxxxxxxx>

[ ... ]

diff --git a/drivers/gpu/drm/bridge/analogix/Makefile b/drivers/gpu/drm/bridge/analogix/Makefile
new file mode 100644
index 0000000..9107b86
--- /dev/null
+++ b/drivers/gpu/drm/bridge/analogix/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix_dp_core.o analogix_dp_reg.o
This results in the following build errors if DRM_ANALOGIX_DP
is configured as module.

ERROR: "analogix_dp_start_video" [drivers/gpu/drm/bridge/analogix/analogix_dp_core.ko] undefined!
ERROR: "analogix_dp_get_lane0_link_training" [drivers/gpu/drm/bridge/analogix/analogix_dp_core.ko] undefined!
ERROR: "analogix_dp_get_lane1_link_training" [drivers/gpu/drm/bridge/analogix/analogix_dp_core.ko] undefined!
ERROR: "analogix_dp_get_lane2_link_training" [drivers/gpu/drm/bridge/analogix/analogix_dp_core.ko] undefined!
ERROR: "analogix_dp_get_lane3_link_training" [drivers/gpu/drm/bridge/analogix/analogix_dp_core.ko] undefined!
ERROR: "analogix_dp_get_lane_count" [drivers/gpu/drm/bridge/analogix/analogix_dp_core.ko] undefined!
ERROR: "analogix_dp_get_link_bandwidth" [drivers/gpu/drm/bridge/analogix/analogix_dp_core.ko] undefined!

[ and so on ]

It should probably be something like

analogix_dp-objs := analogix_dp_core.o analogix_dp_reg.o
obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix_dp.o

Thanks, good catch, will fix it now.

- Yakir
Guenter





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