Re: [PATCH v2 03/15] mmc: mmci: Don't pretend all variants to have OPENDRAIN bit

From: Ulf Hansson
Date: Wed Jan 17 2018 - 04:34:16 EST


[...]

> /* Busy detection for the ST Micro variant */
> @@ -1455,16 +1465,13 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
> ~MCI_ST_DATA2DIREN);
> }
>
> - if (ios->bus_mode == MMC_BUSMODE_OPENDRAIN) {
> - if (host->hw_designer != AMBA_VENDOR_ST)
> - pwr |= MCI_ROD;
> - else {
> - /*
> - * The ST Micro variant use the ROD bit for something
> - * else and only has OD (Open Drain).
> - */
> - pwr |= MCI_OD;
> - }
> + if (ios->bus_mode == MMC_BUSMODE_OPENDRAIN &&
> + host->variant->opendrain) {

A few nitpicks (because I anyway had some comment on patch4):

The above can be written on one line and the brackets isn't needed.

Replace host->variant->opendrain with variant->opendrain. The same
applies to the below change.

> + /*
> + * The ST Micro variant use the ROD bit for
> + * something else and only has OD (Open Drain).
> + */

I think we can remove this comment, as this information becomes
implicit when we start using the variant data.

> + pwr |= host->variant->opendrain;
> }
>
> /*
> --
> 1.9.1
>

Kind regards
Uffe