Re: [PATCH v2 2/3] regulator: tps6586x: add and use correct voltagetable

From: Stefan Agner
Date: Mon Dec 02 2013 - 06:34:07 EST


Am 2013-12-02 10:36, schrieb Thierry Reding:
> On Sun, Dec 01, 2013 at 04:59:14PM +0100, Stefan Agner wrote:
> [...]
>
> This looks pretty good generally. A few minor nits below...
>
>> diff --git a/drivers/regulator/tps6586x-regulator.c b/drivers/regulator/tps6586x-regulator.c
> [...]
>> +#define tps658623_sm2_voltages tps6586x_ldo4_voltages
>> static const unsigned int tps6586x_ldo4_voltages[] = {
>> 1700000, 1725000, 1750000, 1775000, 1800000, 1825000, 1850000, 1875000,
>> 1900000, 1925000, 1950000, 1975000, 2000000, 2025000, 2050000, 2075000,
>
> I'd put the #define below the ldo4 table. This doesn't actually matter
> for the preprocessor, but it makes it easier to read the code. Also an
> additional blank line would help with readability.
>
>> + TPS6586X_LDO(LDO_0, "vinldo01", tps6586x_ldo0, SUPPLYV1, 5, 3, ENC, 0,
>> + END, 0),
>
> Perhaps reduce the indentation here so there's more room in case this
> ever needs to be extended?

The last 4 lines indentation was already that far, so I just adopted
those lines in order to avoid having to touch them too.


>
>> @@ -351,6 +380,7 @@ static int tps6586x_regulator_probe(struct platform_device *pdev)
>> struct regulator_init_data *reg_data;
>> struct tps6586x_platform_data *pdata;
>> struct of_regulator_match *tps6586x_reg_matches = NULL;
>> + int reg_version;
>
> Why the prefix "reg_"?
>
>> @@ -373,10 +403,27 @@ static int tps6586x_regulator_probe(struct platform_device *pdev)
>> return -ENOMEM;
>> }
>>
>> + reg_version = tps6586x_get_version(pdev->dev.parent);
>> +
>> for (id = 0; id < TPS6586X_ID_MAX_REGULATOR; ++id) {
>> reg_data = pdata->reg_init_data[id];
>>
>> - ri = find_regulator_info(id);
>> + switch(reg_version) {
>> + case TPS658623:
>> + ri = find_regulator_info(id, tps658623_regulator,
>> + ARRAY_SIZE(tps658623_regulator));
>> + break;
>> + case TPS658643:
>> + ri = find_regulator_info(id, tps658643_regulator,
>> + ARRAY_SIZE(tps658643_regulator));
>> + break;
>> + }
>
> Perhaps instead of repeating the function calls this could be:
>
> switch (version) {
> case TPS6586XYZ:
> num = ARRAY_SIZE(tps6586xyz_regulator);
> table = tps6586xys_regulator;
> break;
>
> ...
> }
>
> if (table)
> ri = find_regulator_info(id, table, num);
>
> That's slightly longer, but I find that to be more intuitive. Perhaps
> a bit more future-proof since you only have a single call. But that's
> perhaps subjective, so I'm fine with your alternative, too.

Sounds reasonable, will change that accordingly in the next patch
version.
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