[U-Boot] [PATCH v1 03/18] dm: Add a No-op uclass

[Marek Vasut]

On 4/5/19 2:55 PM, Jean-Jacques Hiblot wrote:
> This uclass is intended for devices that do not need any features from the
> uclass, including binding children.
> This will typically be used by devices that are used to bind child devices
> but do not use dm_scan_fdt_dev() to do it. That is for example the case of
> several USB wrappers that have 2 child devices (1 for device and 1 for
> host) but bind only one at a any given time.
> 
> Signed-off-by: Jean-Jacques Hiblot <jjhiblot at ti.com>

Could this be UCLASS_BUS or some sort of simple bus ?

Anyway, +CC Simon.

> ---
> 
>  drivers/core/uclass.c  | 5 +++++
>  include/dm/uclass-id.h | 1 +
>  2 files changed, 6 insertions(+)
> 
> diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c
> index fc3157de39..dc9eb62893 100644
> --- a/drivers/core/uclass.c
> +++ b/drivers/core/uclass.c
> @@ -757,3 +757,8 @@ int uclass_pre_remove_device(struct udevice *dev)
>  	return 0;
>  }
>  #endif
> +
> +UCLASS_DRIVER(nop) = {
> +	.id		= UCLASS_NOP,
> +	.name		= "nop",
> +};
> diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h
> index 86e59781b0..3797cd48f6 100644
> --- a/include/dm/uclass-id.h
> +++ b/include/dm/uclass-id.h
> @@ -61,6 +61,7 @@ enum uclass_id {
>  	UCLASS_MMC,		/* SD / MMC card or chip */
>  	UCLASS_MOD_EXP,		/* RSA Mod Exp device */
>  	UCLASS_MTD,		/* Memory Technology Device (MTD) device */
> +	UCLASS_NOP,		/* No-op devices */
>  	UCLASS_NORTHBRIDGE,	/* Intel Northbridge / SDRAM controller */
>  	UCLASS_NVME,		/* NVM Express device */
>  	UCLASS_PANEL,		/* Display panel, such as an LCD */
> 


-- 
Best regards,
Marek Vasut