From: Charles Keepax <ckeepax@opensource.cirrus.com>
To: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: <alsa-devel@alsa-project.org>, <linux-kernel@vger.kernel.org>,
Mark Brown <broonie@kernel.org>,
Sylwester Nawrocki <s.nawrocki@samsung.com>,
Lee Jones <lee.jones@linaro.org>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Subject: Re: [PATCH v2 1/2] mfd: wm8994: Fix driver operation if loaded as modules
Date: Thu, 27 Feb 2020 13:52:43 +0000 [thread overview]
Message-ID: <20200227135243.GI108283@ediswmail.ad.cirrus.com> (raw)
In-Reply-To: <20200226100802.16384-1-m.szyprowski@samsung.com>
On Wed, Feb 26, 2020 at 11:08:01AM +0100, Marek Szyprowski wrote:
> WM8994 chip has built-in regulators, which might be used for chip
> operation. They are controlled by a separate wm8994-regulator driver,
> which should be loaded before this driver calls regulator_get(), because
> that driver also provides consumer-supply mapping for the them. If that
> driver is not yet loaded, regulator core substitute them with dummy
> regulator, what breaks chip operation, because the built-in regulators are
> never enabled. Fix this by annotating this driver with MODULE_SOFTDEP()
> "pre" dependency to "wm8994_regulator" module.
>
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
> ---
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Be good to ensure patches@opensource.cirrus.com is CCed on
patches for the old Wolfson CODECs.
Thanks,
Charles
WARNING: multiple messages have this Message-ID (diff)
From: Charles Keepax <ckeepax@opensource.cirrus.com>
To: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: alsa-devel@alsa-project.org,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
linux-kernel@vger.kernel.org, Mark Brown <broonie@kernel.org>,
Sylwester Nawrocki <s.nawrocki@samsung.com>,
Lee Jones <lee.jones@linaro.org>
Subject: Re: [PATCH v2 1/2] mfd: wm8994: Fix driver operation if loaded as modules
Date: Thu, 27 Feb 2020 13:52:43 +0000 [thread overview]
Message-ID: <20200227135243.GI108283@ediswmail.ad.cirrus.com> (raw)
In-Reply-To: <20200226100802.16384-1-m.szyprowski@samsung.com>
On Wed, Feb 26, 2020 at 11:08:01AM +0100, Marek Szyprowski wrote:
> WM8994 chip has built-in regulators, which might be used for chip
> operation. They are controlled by a separate wm8994-regulator driver,
> which should be loaded before this driver calls regulator_get(), because
> that driver also provides consumer-supply mapping for the them. If that
> driver is not yet loaded, regulator core substitute them with dummy
> regulator, what breaks chip operation, because the built-in regulators are
> never enabled. Fix this by annotating this driver with MODULE_SOFTDEP()
> "pre" dependency to "wm8994_regulator" module.
>
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
> ---
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Be good to ensure patches@opensource.cirrus.com is CCed on
patches for the old Wolfson CODECs.
Thanks,
Charles
next prev parent reply other threads:[~2020-02-27 14:40 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20200226100814eucas1p1ef5e4d5eb763f37bcd4eceffc798792d@eucas1p1.samsung.com>
2020-02-26 10:08 ` [PATCH v2 1/2] mfd: wm8994: Fix driver operation if loaded as modules Marek Szyprowski
2020-02-26 10:08 ` Marek Szyprowski
[not found] ` <CGME20200226100815eucas1p2f4448e3dea078bfc58a8acdc70340c11@eucas1p2.samsung.com>
2020-02-26 10:08 ` [PATCH v2 2/2] mfd: wm8994: Fix unbalanced calls to regulator_bulk_disable() Marek Szyprowski
2020-02-26 10:08 ` Marek Szyprowski
2020-02-27 13:56 ` Charles Keepax
2020-02-27 13:56 ` Charles Keepax
2020-02-27 13:52 ` Charles Keepax [this message]
2020-02-27 13:52 ` [PATCH v2 1/2] mfd: wm8994: Fix driver operation if loaded as modules Charles Keepax
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