Re: [PATCH v2] drm/i915/hwmon: expose package temperature

[Raag Jadav <raag.jadav@intel.com>]

On Tue, Sep 10, 2024 at 11:57:20AM +0530, Nilawar, Badal wrote:
> On 10-09-2024 10:07, Gupta, Anshuman wrote:
> > > 
> > > ...
> > > 
> > > > +static int
> > > > +hwm_temp_read(struct hwm_drvdata *ddat, u32 attr, long *val) {
> > > > +	struct i915_hwmon *hwmon = ddat->hwmon;
> > > > +	intel_wakeref_t wakeref;
> > > > +	u32 reg_val;
> > > > +
> > > > +	switch (attr) {
> > > > +	case hwmon_temp_input:
> > > > +		with_intel_runtime_pm(ddat->uncore->rpm, wakeref)
> > > > +			reg_val = intel_uncore_read(ddat->uncore, hwmon-
> > > > rg.pkg_temp);
> > > > +
> > > > +		/* HW register value is in degrees, convert to millidegrees. */
> > > > +		*val = REG_FIELD_GET(TEMP_MASK, reg_val) *
> > > MILLIDEGREE_PER_DEGREE;
> > > > +		return 0;
> > > > +	default:
> > > > +		return -EOPNOTSUPP;
> > > > +	}
> > > 
> > > I don't understand this love for single case switches.
> > IMHO this is kept to keep symmetry in this file to make it more readable.
> > Also it readable to return error using default case, which is followed in this entire file.
> I agree on this. Let’s stick to file-wide approach and ensure it is applied
> to the fan_input attribute as well.

Since fan patch is already on its way to drm-next, you can submit a fix if you wish.
Although I don't agree with it, I have no objections.

Raag