linux-kernel - Re: [PATCH v2 2/7] soc: qcom: smem: Add a feature code getter

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Date: Tue, 28 May 2024 16:06:38 -0500
From: Bjorn Andersson <andersson@...nel.org>
To: Konrad Dybcio <konrad.dybcio@...aro.org>
Cc: Rob Clark <robdclark@...il.com>, 
	Abhinav Kumar <quic_abhinavk@...cinc.com>, Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, 
	Sean Paul <sean@...rly.run>, Marijn Suijten <marijn.suijten@...ainline.org>, 
	David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org, 
	freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org, 
	Neil Armstrong <neil.armstrong@...aro.org>
Subject: Re: [PATCH v2 2/7] soc: qcom: smem: Add a feature code getter

On Wed, Apr 17, 2024 at 10:02:54PM GMT, Konrad Dybcio wrote:
[..]
> diff --git a/include/linux/soc/qcom/socinfo.h b/include/linux/soc/qcom/socinfo.h
> index 10e0a4c287f4..52439f48428f 100644
> --- a/include/linux/soc/qcom/socinfo.h
> +++ b/include/linux/soc/qcom/socinfo.h
> @@ -3,6 +3,8 @@
>  #ifndef __QCOM_SOCINFO_H__
>  #define __QCOM_SOCINFO_H__
>  
> +#include <linux/types.h>
> +
>  /*
>   * SMEM item id, used to acquire handles to respective
>   * SMEM region.
> @@ -82,4 +84,28 @@ struct socinfo {
>  	__le32 boot_core;
>  };
>  
> +/* Internal feature codes */
> +enum qcom_socinfo_feature_code {
> +	/* External feature codes */
> +	SOCINFO_FC_UNKNOWN = 0x0,
> +	SOCINFO_FC_AA,
> +	SOCINFO_FC_AB,
> +	SOCINFO_FC_AC,
> +	SOCINFO_FC_AD,
> +	SOCINFO_FC_AE,
> +	SOCINFO_FC_AF,
> +	SOCINFO_FC_AG,
> +	SOCINFO_FC_AH,
> +};
> +
> +/* Internal feature codes */
> +/* Valid values: 0 <= n <= 0xf */
> +#define SOCINFO_FC_Yn(n)		(0xf1 + n)

Please wrap that 'n' in some () here and below...

> +#define SOCINFO_FC_INT_MAX		SOCINFO_FC_Yn(0x10)

"MAX" sounds inclusive, but the value is exclusive.

Regards,
Bjorn

> +
> +/* Product codes */
> +#define SOCINFO_PC_UNKNOWN		0
> +#define SOCINFO_PCn(n)			(n + 1)
> +#define SOCINFO_PC_RESERVE		(BIT(31) - 1)
> +
>  #endif
> 
> -- 
> 2.44.0
>