linux-kernel - Re: [PATCH 1/6] soc: qcom: Move some socinfo defines to the header, expand them

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Message-ID: <zua77x2vpfgahghxe33hrhimwh4wl4vu3ttvtao2xnwbvxfesm@rks7ue7cgwhu>
Date: Sat, 6 Apr 2024 05:22:28 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Konrad Dybcio <konrad.dybcio@...aro.org>
Cc: Bjorn Andersson <andersson@...nel.org>, 
	Rob Clark <robdclark@...il.com>, Abhinav Kumar <quic_abhinavk@...cinc.com>, 
	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 1/6] soc: qcom: Move some socinfo defines to the header,
 expand them

On Fri, Apr 05, 2024 at 10:41:29AM +0200, Konrad Dybcio wrote:
> In preparation for parsing the chip "feature code" (FC) and "product
> code" (PC) (essentially the parameters that let us conclusively
> characterize the sillicon we're running on, including various speed
> bins), move the socinfo version defines to the public header and
> include some more FC/PC defines.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
>  drivers/soc/qcom/socinfo.c       |  8 --------
>  include/linux/soc/qcom/socinfo.h | 36 ++++++++++++++++++++++++++++++++++++
>  2 files changed, 36 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/soc/qcom/socinfo.c b/drivers/soc/qcom/socinfo.c
> index 277c07a6603d..cf4616a468f2 100644
> --- a/drivers/soc/qcom/socinfo.c
> +++ b/drivers/soc/qcom/socinfo.c
> @@ -21,14 +21,6 @@
>  
>  #include <dt-bindings/arm/qcom,ids.h>
>  
> -/*
> - * SoC version type with major number in the upper 16 bits and minor
> - * number in the lower 16 bits.
> - */
> -#define SOCINFO_MAJOR(ver) (((ver) >> 16) & 0xffff)
> -#define SOCINFO_MINOR(ver) ((ver) & 0xffff)
> -#define SOCINFO_VERSION(maj, min)  ((((maj) & 0xffff) << 16)|((min) & 0xffff))
> -
>  /* Helper macros to create soc_id table */
>  #define qcom_board_id(id) QCOM_ID_ ## id, __stringify(id)
>  #define qcom_board_id_named(id, name) QCOM_ID_ ## id, (name)
> diff --git a/include/linux/soc/qcom/socinfo.h b/include/linux/soc/qcom/socinfo.h
> index e78777bb0f4a..ba7f683bd32c 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.
> @@ -12,6 +14,14 @@
>  #define SMEM_SOCINFO_BUILD_ID_LENGTH	32
>  #define SMEM_SOCINFO_CHIP_ID_LENGTH	32
>  
> +/*
> + * SoC version type with major number in the upper 16 bits and minor
> + * number in the lower 16 bits.
> + */
> +#define SOCINFO_MAJOR(ver) (((ver) >> 16) & 0xffff)
> +#define SOCINFO_MINOR(ver) ((ver) & 0xffff)
> +#define SOCINFO_VERSION(maj, min)  ((((maj) & 0xffff) << 16)|((min) & 0xffff))
> +
>  /* Socinfo SMEM item structure */
>  struct socinfo {
>  	__le32 fmt;
> @@ -74,4 +84,30 @@ struct socinfo {
>  	__le32 boot_core;
>  };
>  
> +/* Internal feature codes */
> +enum 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,
> +	SOCINFO_FC_EXT_RESERVE,
> +};
> +
> +/* Internal feature codes */
> +/* Valid values: 0 <= n <= 0xf */
> +#define SOCINFO_FC_Yn(n)		(0xf1 + n)
> +#define SOCINFO_FC_INT_RESERVE		SOCINFO_FC_Yn(0x10)
> +
> +/* Product codes */
> +#define SOCINFO_PC_UNKNOWN		0
> +/* Valid values: 0 <= n <= 8, the rest is reserved */
> +#define SOCINFO_PCn(n)			(n + 1)
> +#define SOCINFO_PC_RESERVE		(BIT(31) - 1)

Please move these defines into the next patch.

> +
>  #endif
> 
> -- 
> 2.40.1
> 

-- 
With best wishes
Dmitry