[U-Boot] [PATCH 31/57] ahci: Add an AHCI uclass

[Bin Meng]

Hi Simon,

On Tue, Dec 8, 2015 at 11:38 AM, Simon Glass <sjg at chromium.org> wrote:
> Add a uclass ID for AHCI/SATA. There are no operations and no interface so
> far, but it is possible to probe a SATA device.

I think we should create an ATA or disk controller uclass, instead of
AHCI class. AHCI should be a specific driver scope of this uclass.

>
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
>
>  drivers/block/Makefile      |  2 +-
>  drivers/block/ahci-uclass.c | 14 ++++++++++++++
>  include/dm/uclass-id.h      |  1 +
>  3 files changed, 16 insertions(+), 1 deletion(-)
>  create mode 100644 drivers/block/ahci-uclass.c
>
> diff --git a/drivers/block/Makefile b/drivers/block/Makefile
> index f161c01..b75c75d 100644
> --- a/drivers/block/Makefile
> +++ b/drivers/block/Makefile
> @@ -5,7 +5,7 @@
>  # SPDX-License-Identifier:     GPL-2.0+
>  #
>
> -obj-$(CONFIG_SCSI_AHCI) += ahci.o
> +obj-$(CONFIG_SCSI_AHCI) += ahci.o ahci-uclass.o
>  obj-$(CONFIG_DWC_AHSATA) += dwc_ahsata.o
>  obj-$(CONFIG_FSL_SATA) += fsl_sata.o
>  obj-$(CONFIG_IDE_FTIDE020) += ftide020.o
> diff --git a/drivers/block/ahci-uclass.c b/drivers/block/ahci-uclass.c
> new file mode 100644
> index 0000000..7b8c326
> --- /dev/null
> +++ b/drivers/block/ahci-uclass.c
> @@ -0,0 +1,14 @@
> +/*
> + * Copyright (c) 2015 Google, Inc
> + * Written by Simon Glass <sjg at chromium.org>
> + *
> + * SPDX-License-Identifier:    GPL-2.0+
> + */
> +
> +#include <common.h>
> +#include <dm.h>
> +
> +UCLASS_DRIVER(ahci) = {
> +       .id             = UCLASS_AHCI,
> +       .name           = "ahci",
> +};
> diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h
> index 4a6827b..c74601a 100644
> --- a/include/dm/uclass-id.h
> +++ b/include/dm/uclass-id.h
> @@ -26,6 +26,7 @@ enum uclass_id {
>
>         /* U-Boot uclasses start here - in alphabetical order */
>         UCLASS_ADC,             /* Analog-to-digital converter */
> +       UCLASS_AHCI,            /* AHCI / SATA controller */
>         UCLASS_CLK,             /* Clock source, e.g. used by peripherals */
>         UCLASS_CPU,             /* CPU, typically part of an SoC */
>         UCLASS_CROS_EC,         /* Chrome OS EC */
> --

Regards,
Bin