linux-kernel - Re: [PATCH V7 05/12] thermal: tegra: add Tegra210 specific SOC

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Date:	Mon, 14 Mar 2016 11:57:40 -0700
From:	Eduardo Valentin <edubezval@...il.com>
To:	Wei Ni <wni@...dia.com>
Cc:	rui.zhang@...el.com, thierry.reding@...il.com,
	MLongnecker@...dia.com, swarren@...dotorg.org,
	mikko.perttunen@...si.fi, linux-tegra@...r.kernel.org,
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V7 05/12] thermal: tegra: add Tegra210 specific SOC_THERM
 driver

On Fri, Mar 11, 2016 at 11:10:25AM +0800, Wei Ni wrote:
> Add Tegra210 specific SOC_THERM driver.
> 
> Signed-off-by: Wei Ni <wni@...dia.com>
> ---
>  drivers/thermal/tegra/Makefile            |   1 +
>  drivers/thermal/tegra/soctherm-fuse.c     |  11 ++
>  drivers/thermal/tegra/soctherm.c          |   6 ++
>  drivers/thermal/tegra/soctherm.h          |   4 +
>  drivers/thermal/tegra/tegra210-soctherm.c | 173 ++++++++++++++++++++++++++++++

No Kconfig change?

>  5 files changed, 195 insertions(+)
>  create mode 100644 drivers/thermal/tegra/tegra210-soctherm.c
> 
> diff --git a/drivers/thermal/tegra/Makefile b/drivers/thermal/tegra/Makefile
> index d5fb15377b97..bf9e028eba28 100644
> --- a/drivers/thermal/tegra/Makefile
> +++ b/drivers/thermal/tegra/Makefile
> @@ -2,3 +2,4 @@ obj-$(CONFIG_TEGRA_SOCTHERM)	+= tegra-soctherm.o
>  
>  tegra-soctherm-y				:= soctherm.o soctherm-fuse.o
>  tegra-soctherm-$(CONFIG_ARCH_TEGRA_124_SOC)	+= tegra124-soctherm.o
> +tegra-soctherm-$(CONFIG_ARCH_TEGRA_210_SOC)	+= tegra210-soctherm.o
> diff --git a/drivers/thermal/tegra/soctherm-fuse.c b/drivers/thermal/tegra/soctherm-fuse.c
> index 931c299ab0e8..29963180c453 100644
> --- a/drivers/thermal/tegra/soctherm-fuse.c
> +++ b/drivers/thermal/tegra/soctherm-fuse.c
> @@ -28,7 +28,18 @@
>  #define FUSE_TSENSOR_COMMON			0x180
>  
>  /*
> + * Tegra210: Layout of bits in FUSE_TSENSOR_COMMON:
> + *    3                   2                   1                   0
> + *  1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
> + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> + * |       BASE_FT       |      BASE_CP      | SHFT_FT | SHIFT_CP  |
> + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> + *
>   * Tegra12x, etc:
> + * In chips prior to Tegra210, this fuse was incorrectly sized as 26 bits,
> + * and didn't hold SHIFT_CP in [31:26]. Therefore these missing six bits
> + * were obtained via the FUSE_SPARE_REALIGNMENT_REG register [5:0].
> + *
>   * FUSE_TSENSOR_COMMON:
>   *    3                   2                   1                   0
>   *  1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
> diff --git a/drivers/thermal/tegra/soctherm.c b/drivers/thermal/tegra/soctherm.c
> index f56e5a11384e..52a33760e8e8 100644
> --- a/drivers/thermal/tegra/soctherm.c
> +++ b/drivers/thermal/tegra/soctherm.c
> @@ -147,6 +147,12 @@ static const struct of_device_id tegra_soctherm_of_match[] = {
>  		.data = &tegra124_soctherm,
>  	},
>  #endif
> +#ifdef CONFIG_ARCH_TEGRA_210_SOC
> +	{
> +		.compatible = "nvidia,tegra210-soctherm",
> +		.data = &tegra210_soctherm,
> +	},
> +#endif
>  	{ },
>  };
>  MODULE_DEVICE_TABLE(of, tegra_soctherm_of_match);
> diff --git a/drivers/thermal/tegra/soctherm.h b/drivers/thermal/tegra/soctherm.h
> index f80ee1492ddb..69d317269af1 100644
> --- a/drivers/thermal/tegra/soctherm.h
> +++ b/drivers/thermal/tegra/soctherm.h
> @@ -106,5 +106,9 @@ int tegra_calc_tsensor_calib(const struct tegra_tsensor *sensor,
>  extern const struct tegra_soctherm_soc tegra124_soctherm;
>  #endif
>  
> +#ifdef CONFIG_ARCH_TEGRA_210_SOC
> +extern const struct tegra_soctherm_soc tegra210_soctherm;
> +#endif

Is CONFIG_ARCH_TEGRA_210_SOC going to be tristate?

If only bool, do you need to make the symbol extern?

> -- 
> 1.9.1
> 

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