linux-kernel - Re: [PATCH] mxcmmc: Add the ability to bind a regulator to manage the MMC card voltage

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Date:	Mon, 8 Nov 2010 23:12:01 +0100
From:	Linus Walleij <linus.ml.walleij@...il.com>
To:	Alberto Panizzo <maramaopercheseimorto@...il.com>
Cc:	Sascha Hauer <s.hauer@...gutronix.de>,
	Daniel Mack <daniel@...aq.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>,
	Eric Bénard <eric@...rea.com>,
	Fabio Estevam <fabioestevam@...oo.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-mmc <linux-mmc@...r.kernel.org>
Subject: Re: [PATCH] mxcmmc: Add the ability to bind a regulator to manage the
 MMC card voltage

2010/11/2 Alberto Panizzo <maramaopercheseimorto@...il.com>:

> +static inline void mxcmci_init_ocr(struct mxcmci_host *host)
> +{
> +#ifdef CONFIG_REGULATOR
> +       host->vcc = regulator_get(mmc_dev(host->mmc), "vmmc");
> +
> +       if (IS_ERR(host->vcc)) {
> +               host->vcc = NULL;
> +       } else {
> +               host->mmc->ocr_avail = mmc_regulator_get_ocrmask(host->vcc);
> +               if (host->pdata && host->pdata->ocr_avail)
> +                       dev_warn(mmc_dev(host->mmc),
> +                               "pdata->ocr_avail will not be used\n");
> +       }
> +#endif

You don't need these #ifdef CONFIG_REGULATOR guardposts
anymore. I implemented stub functions for the ocrmask functions
for 2.6.37.

> +static inline void mxcmci_set_power(struct mxcmci_host *host, unsigned int vdd)
> +{
> +#ifdef CONFIG_REGULATOR
> +       if (host->vcc)
> +               mmc_regulator_set_ocr(host->vcc, vdd);
> +#endif

Neither here.

But for both cases: no big deal. Take it the day it disturbs you :-)

Yours,
Linus Walleij
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