[v4] drm/bridge: Allow using fwnode API to get the next bridge

[PATCH v4 3/9] drm/bridge: simple-bridge: Add platform module alias

Posted by Sui Jingfeng 1 year, 9 months ago

Otherwise when compiled as module, this driver will not be probed on
non-DT environment. This is a fundamential step to make this driver
truely OF-independent.

Signed-off-by: Sui Jingfeng <sui.jingfeng@linux.dev>
---
 drivers/gpu/drm/bridge/simple-bridge.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/bridge/simple-bridge.c b/drivers/gpu/drm/bridge/simple-bridge.c
index 3b09bdd5ad4d..6be271d1394b 100644
--- a/drivers/gpu/drm/bridge/simple-bridge.c
+++ b/drivers/gpu/drm/bridge/simple-bridge.c
@@ -308,3 +308,4 @@ module_platform_driver(simple_bridge_driver);
 MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
 MODULE_DESCRIPTION("Simple DRM bridge driver");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:simple-bridge");
-- 
2.34.1

Re: [PATCH v4 3/9] drm/bridge: simple-bridge: Add platform module alias

Posted by Dmitry Baryshkov 1 year, 9 months ago

On Tue, Apr 23, 2024 at 03:18:57AM +0800, Sui Jingfeng wrote:
> Otherwise when compiled as module, this driver will not be probed on
> non-DT environment. This is a fundamential step to make this driver
> truely OF-independent.
> 
> Signed-off-by: Sui Jingfeng <sui.jingfeng@linux.dev>
> ---
>  drivers/gpu/drm/bridge/simple-bridge.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/bridge/simple-bridge.c b/drivers/gpu/drm/bridge/simple-bridge.c
> index 3b09bdd5ad4d..6be271d1394b 100644
> --- a/drivers/gpu/drm/bridge/simple-bridge.c
> +++ b/drivers/gpu/drm/bridge/simple-bridge.c
> @@ -308,3 +308,4 @@ module_platform_driver(simple_bridge_driver);
>  MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
>  MODULE_DESCRIPTION("Simple DRM bridge driver");
>  MODULE_LICENSE("GPL");
> +MODULE_ALIAS("platform:simple-bridge");

I think it would be better to use MODULE_DEVICE_TABLE(platform,
simple_bridge_platform)id_table). Note, there is no such thing as
generic 'simple_bridge'. I'd expect platform device to have a
device-specific name which can be matched by the driver. This requires a
platform_device_id table.

> -- 
> 2.34.1
> 

-- 
With best wishes
Dmitry