On Tue, Jul 20, 2021 at 5:33 PM Miclaus, Antoniu
[off-list ref] wrote:

quoted

From: Andy Shevchenko <redacted>
Sent: Tuesday, July 20, 2021 5:08 PM
On Tue, Jul 20, 2021 at 4:17 PM Miclaus, Antoniu
[off-list ref] wrote:

quoted

quoted

From: Andy Shevchenko <redacted>
Sent: Friday, July 16, 2021 5:53 PM
On Fri, Jul 16, 2021 at 2:43 PM Antoniu Miclaus
[off-list ref] wrote:

...

quoted

quoted

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First question is why not to use the regmap API (I have heard it has
gained support of 17 bit)?

Initially that was the plan, but after this patch:

https://urldefense.com/v3/__https://github.com/torvalds/linux/commit/41
91f19792bf91267835eb090d970e9cd6277a65__;!!A3Ni8CS0y2Y!ptUV0YC2nfD
6AdH_y5U0ziyELl4B9pDL0ubkdpFHFtrFNE_NqUS_TWm_gE-SlHV315Ak$

quoted

the custom write formats for regmap allow the read only via cached

registers.

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Therefore, I preferred using spi transfers for write/read to/from the

device.

Not sure I follow you. That patch is upstream. Does it prevent you
from switching to regmap SPI API?

It does not prevent me from switching to regmap SPI API.
It will prevent me from using regmap_read to read directly from device.
https://github.com/torvalds/linux/commit/4191f19792bf91267835eb090d970e9cd6277a65#diff-3e0b7d2f0a55adb6573693a514cb8024a81a55da848cb22632ab5fd4dd6dd4e4R39

How? If it's the case it's a huge regression in the API and must be fixed ASAP.

-- 
With Best Regards,
Andy Shevchenko