linux-kernel - Re: [PATCH 1/2] twl-regulator: define all feature flags in one place.

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Date:	Wed, 2 May 2012 10:08:49 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	NeilBrown <neilb@...e.de>, sameo@...ux.intel.com
Cc:	Liam Girdwood <lrg@...com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] twl-regulator: define all feature flags in one place.

On Wed, May 02, 2012 at 06:44:50AM +1000, NeilBrown wrote:
> twl-regulator has a collection of feature flags, some defined
> in twl-core.c and  one defined in i2c/twl.h.
> This is confusing for anyone adding a new feature flag.
> 
> So collect them together and place them in twl.h immediately
> after the structure in which they are initially set.

Please remember to always CC maintainers on patches and always use
subject lines appropriate for the subsystem.  Adding Samuel since this
is not a regulator patch.

> Signed-off-by: NeilBrown <neilb@...e.de>
> ---
> 
>  drivers/mfd/twl-core.c  |    7 -------
>  include/linux/i2c/twl.h |    8 ++++++--
>  2 files changed, 6 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
> index 4cbf285..269b296 100644
> --- a/drivers/mfd/twl-core.c
> +++ b/drivers/mfd/twl-core.c
> @@ -224,13 +224,6 @@
>  #define HIGH_PERF_SQ			(1 << 3)
>  #define CK32K_LOWPWR_EN			(1 << 7)
>  
> -
> -/* chip-specific feature flags, for i2c_device_id.driver_data */
> -#define TWL4030_VAUX2		BIT(0)	/* pre-5030 voltage ranges */
> -#define TPS_SUBSET		BIT(1)	/* tps659[23]0 have fewer LDOs */
> -#define TWL5031			BIT(2)  /* twl5031 has different registers */
> -#define TWL6030_CLASS		BIT(3)	/* TWL6030 class */
> -
>  /*----------------------------------------------------------------------*/
>  
>  /* is driver active, bound to a chip? */
> diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h
> index b526031..88e8cd8 100644
> --- a/include/linux/i2c/twl.h
> +++ b/include/linux/i2c/twl.h
> @@ -171,8 +171,6 @@ static inline int twl_class_is_ ##class(void)	\
>  TWL_CLASS_IS(4030, TWL4030_CLASS_ID)
>  TWL_CLASS_IS(6030, TWL6030_CLASS_ID)
>  
> -#define TWL6025_SUBCLASS	BIT(4)  /* TWL6025 has changed registers */
> -
>  /*
>   * Read and write single 8-bit registers
>   */
> @@ -748,6 +746,12 @@ struct twl_regulator_driver_data {
>  	void		*data;
>  	unsigned long	features;
>  };
> +/* chip-specific feature flags, for twl_regulator_driver_data.features */
> +#define TWL4030_VAUX2		BIT(0)	/* pre-5030 voltage ranges */
> +#define TPS_SUBSET		BIT(1)	/* tps659[23]0 have fewer LDOs */
> +#define TWL5031			BIT(2)  /* twl5031 has different registers */
> +#define TWL6030_CLASS		BIT(3)	/* TWL6030 class */
> +#define TWL6025_SUBCLASS	BIT(4)  /* TWL6025 has changed registers */
>  
>  /*----------------------------------------------------------------------*/
>  
> 
> 

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