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SubjectRE: [PATCH] regulator: tps6586x: add SMx slew rate setting
Thanks for the feedback.
The reason for using driver_data is that I can't find a proper field in regulator_init_data for the slew rate setting.
I'll do some correction based on the feedback and try to add a new field for the slew rate setting.

-----Original Message-----
From: Mark Brown [mailto:broonie@opensource.wolfsonmicro.com]
Sent: Thursday, August 04, 2011 20:13
To: Danny Huang
Cc: lrg@ti.com; mike@compulab.co.il; sameo@linux.intel.com; Xin Xie; gking@nvidia.com; linux-kernel@vger.kernel.org
Subject: Re: [PATCH] regulator: tps6586x: add SMx slew rate setting

On Thu, Aug 04, 2011 at 07:34:22PM +0800, dahuang@nvidia.com wrote:
> From: Danny Huang <dahuang@nvidia.com>
>
> Add output vlotage slew rate setting for SM0/SM1
>
> From: Xin Xie <xxie@nvidia.com>

Looks like you messed up here, I rather suspect Xin Xie rather than you should be the author?

> +static int tps6586x_regulator_set_slew_rate(struct platform_device
> +*pdev) {
> + struct device *parent = pdev->dev.parent;
> + struct regulator_init_data *p = pdev->dev.platform_data;
> + struct tps6586x_settings *setting = p->driver_data;

If this is system configured data (which is what one would expect for
this) it should be coming in as platform data not driver data - what's happened here?

> + default:
> + dev_err(&pdev->dev, "invalid regulator ID\n");
> + return -EINVAL;
> + }

Should say what data is invalid here, otherwise it's not going to be at all obvious what's invalid.

> +enum {
> + TPS6586x_SLEW_RATE_INSTANTLY,
> + TPS6586x_SLEW_RATE_110UV,
> + TPS6586x_SLEW_RATE_220UV,
> + TPS6586x_SLEW_RATE_440UV,
> + TPS6586x_SLEW_RATE_880UV,
> + TPS6586x_SLEW_RATE_1760UV,
> + TPS6586x_SLEW_RATE_3520UV,
> + TPS6586x_SLEW_RATE_7040UV,
> +};

If the values are being written directly to the chip you should probably explicitly specify the values that are being set.


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