[v5,1/3] usb: dwc3: Track DWC_usb31 VERSIONTYPE

[Felipe Balbi <balbi@kernel.org>]

Hi,

Thinh Nguyen <thinh.nguyen@synopsys.com> writes:
> Add a new field to dwc3 structure to track VERSIONTYPE. The VERSIONTYPE
> is represented in ASCII in the 32-bit VERSIONTYPE register. In
> DWC_usb31, sub releases for each version are tracked with VERSIONTYPE
> such as "ea01" and "ea02".
>
> Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
> ---
>  drivers/usb/dwc3/core.c | 1 +
>  drivers/usb/dwc3/core.h | 5 +++++
>  2 files changed, 6 insertions(+)
>
> diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
> index becfbb87f791..437816ff8860 100644
> --- a/drivers/usb/dwc3/core.c
> +++ b/drivers/usb/dwc3/core.c
> @@ -702,6 +702,7 @@ static bool dwc3_core_is_valid(struct dwc3 *dwc)
>  		/* Detected DWC_usb31 IP */
>  		dwc->revision = dwc3_readl(dwc->regs, DWC3_VER_NUMBER);
>  		dwc->revision |= DWC3_REVISION_IS_DWC31;
> +		dwc->version_type = dwc3_readl(dwc->regs, DWC3_VER_TYPE);
>  	} else {
>  		return false;
>  	}
> diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
> index 5bfb62533e0f..4573e1bfd56e 100644
> --- a/drivers/usb/dwc3/core.h
> +++ b/drivers/usb/dwc3/core.h
> @@ -918,6 +918,7 @@ struct dwc3_scratchpad_array {
>   * @u1u2: only used on revisions <1.83a for workaround
>   * @maximum_speed: maximum speed requested (mainly for testing purposes)
>   * @revision: revision register contents
> + * @version_type: VERSIONTYPE register contents, a sub release of a revision
>   * @dr_mode: requested mode of operation
>   * @current_dr_role: current role of operation when in dual-role mode
>   * @desired_dr_role: desired role of operation when in dual-role mode
> @@ -1104,6 +1105,10 @@ struct dwc3 {
>  #define DWC3_USB31_REVISION_110A	(0x3131302a | DWC3_REVISION_IS_DWC31)
>  #define DWC3_USB31_REVISION_120A	(0x3132302a | DWC3_REVISION_IS_DWC31)
>  
> +	u32			version_type;
> +
> +#define DWC31_VERSIONTYPE_EA01		0x65613031

on patch 2 you talk about ea06, why don't you have a define for all
those version types?