Messages in this thread | | | Date | Sat, 20 Aug 2022 12:49:15 +0100 | From | Jonathan Cameron <> | Subject | Re: [PATCH v4 1/2] iio: pressure: dps310: Refactor startup procedure |
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On Fri, 19 Aug 2022 12:42:00 +0300 Andy Shevchenko <andy.shevchenko@gmail.com> wrote:
> On Mon, Aug 15, 2022 at 4:42 PM Eddie James <eajames@linux.ibm.com> wrote: > > On 8/12/22 17:03, Andy Shevchenko wrote: > > > On Wed, Aug 10, 2022 at 12:12 AM Eddie James <eajames@linux.ibm.com> wrote: > > ... > > > >> + rc = regmap_write(data->regmap, 0x0e, 0xA5); > > >> + if (rc) > > >> + return rc; > > >> + > > >> + rc = regmap_write(data->regmap, 0x0f, 0x96); > > >> + if (rc) > > >> + return rc; > > > This code already exists, but still want to ask, is it really > > > byte-registers here and not be16/le16 one? In such a case perhaps bulk > > > write can be used to reflect it better? > > > > The temperature and pressure regs are 24 bits big endian, and all the > > rest are 8 bits. I think the existing approach is best. > > It doesn't look like you got what I was meaning... Or I misunderstood > what you said. > > The code above writes two byte values to two sequential registers > which make me think that they are 16-bit registers at offset 0x0e.
Given they are undocumented, this is guessing territory. Probably best to just leave them as is. You could do a bulk write on an array though as that implies nothing about what's in the registers -just that they happen to be next to each other.
> > ... > > > >> + rc = regmap_write(data->regmap, 0x0e, 0x00); > > >> + if (rc) > > >> + return rc; > > >> + > > >> + return regmap_write(data->regmap, 0x0f, 0x00); > > Ditto. >
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