[U-Boot] [PATCH 1/5] power: regulator: Add ctrl_reg and volt_reg fields for pmic

[Przemyslaw Marczak <p.marczak@samsung.com>]

Hello Keerthy,

On 09/14/2016 06:28 AM, Keerthy wrote:
> The ctrl reg contains bit fields to enable and disable regulators,
> and volt_reg has the bit fields to configure the voltage values.
> The registers are frequently accessed hence make them part
> of dm_regulator_uclass_platdata structure.
>
> Signed-off-by: Keerthy <j-keerthy@ti.com>
> ---
>   include/power/regulator.h | 2 ++
>   1 file changed, 2 insertions(+)
>
> diff --git a/include/power/regulator.h b/include/power/regulator.h
> index 9bcd728..57b14a3 100644
> --- a/include/power/regulator.h
> +++ b/include/power/regulator.h
> @@ -171,6 +171,8 @@ struct dm_regulator_uclass_platdata {
>   	bool boot_on;
>   	const char *name;
>   	int flags;
> +	u8 ctrl_reg;
> +	u8 volt_reg;
>   };
>   
>   /* Regulator device operations */

This structure above is used for some common "high-level" data, which 
can be used by regulator uclass driver.

Even if most of PMICs has some ctrl/volt/etc regs, the regulator uclass 
driver doesn't know, how to use it, so from this point of view it is 
useless.

But, you can keep device/driver data in a proper fields. Please look at 
those files:

drivers/power/regulator/fixed.c:119
drivers/power/regulator/pfuze100.c:567

To store some device internal data, you can use:
.platdata_auto_alloc_size -> with access by dev_get_platdata()
.priv_auto_alloc_size -> with access by dev_get_priv()

Best regards,
-- 
Przemyslaw Marczak
Samsung R&D Institute Poland
Samsung Electronics
p.marczak at samsung.com