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Message-ID: <1jr040xu9z.fsf@starbuckisacylon.baylibre.com>
Date: Fri, 14 Feb 2025 19:20:40 +0100
From: Jerome Brunet <jbrunet@...libre.com>
To: Ira Weiny <ira.weiny@...el.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Dave Ertman
<david.m.ertman@...el.com>, "Rafael J. Wysocki" <rafael@...nel.org>,
"Stephen Boyd" <sboyd@...nel.org>, Arnd Bergmann <arnd@...db.de>,
Danilo Krummrich <dakr@...nel.org>, Conor Dooley
<conor.dooley@...rochip.com>, Daire McNamara
<daire.mcnamara@...rochip.com>, Philipp Zabel <p.zabel@...gutronix.de>,
Douglas Anderson <dianders@...omium.org>, Andrzej Hajda
<andrzej.hajda@...el.com>, Neil Armstrong <neil.armstrong@...aro.org>,
"Robert Foss" <rfoss@...nel.org>, Laurent Pinchart
<Laurent.pinchart@...asonboard.com>, Jonas Karlman <jonas@...boo.se>,
"Jernej Skrabec" <jernej.skrabec@...il.com>, Maarten Lankhorst
<maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>, David Airlie
<airlied@...il.com>, Simona Vetter <simona@...ll.ch>, Hans de Goede
<hdegoede@...hat.com>, Ilpo Järvinen
<ilpo.jarvinen@...ux.intel.com>,
Bryan O'Donoghue <bryan.odonoghue@...aro.org>, Vladimir Kondratiev
<vladimir.kondratiev@...ileye.com>, Gregory CLEMENT
<gregory.clement@...tlin.com>, Théo Lebrun
<theo.lebrun@...tlin.com>,
Michael Turquette <mturquette@...libre.com>, "Abel Vesa"
<abelvesa@...nel.org>, Peng Fan <peng.fan@....com>, Shawn Guo
<shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>,
"Pengutronix Kernel Team" <kernel@...gutronix.de>, Fabio Estevam
<festevam@...il.com>, Kevin Hilman <khilman@...libre.com>, Martin
Blumenstingl <martin.blumenstingl@...glemail.com>,
<linux-kernel@...r.kernel.org>, <linux-riscv@...ts.infradead.org>,
<dri-devel@...ts.freedesktop.org>,
<platform-driver-x86@...r.kernel.org>, <linux-mips@...r.kernel.org>,
<linux-clk@...r.kernel.org>, <imx@...ts.linux.dev>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-amlogic@...ts.infradead.org>
Subject: Re: [PATCH v3 6/7] clk: clk-imx8mp-audiomix: use the auxiliary
device creation helper
On Fri 14 Feb 2025 at 10:15, Ira Weiny <ira.weiny@...el.com> wrote:
> Jerome Brunet wrote:
>> The auxiliary device creation of this driver is simple enough to
>> use the available auxiliary device creation helper.
>>
>> Use it and remove some boilerplate code.
>>
>> Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
>> ---
>> drivers/clk/imx/clk-imx8mp-audiomix.c | 56 ++++-------------------------------
>> 1 file changed, 6 insertions(+), 50 deletions(-)
>>
>> diff --git a/drivers/clk/imx/clk-imx8mp-audiomix.c b/drivers/clk/imx/clk-imx8mp-audiomix.c
>> index c409fc7e061869988f83c7df3ef7860500426323..988a5fffeb4e0e481ec57038d9d1f1b43432fc98 100644
>> --- a/drivers/clk/imx/clk-imx8mp-audiomix.c
>> +++ b/drivers/clk/imx/clk-imx8mp-audiomix.c
>> @@ -228,64 +228,20 @@ struct clk_imx8mp_audiomix_priv {
>> struct clk_hw_onecell_data clk_data;
>> };
>>
>> -#if IS_ENABLED(CONFIG_RESET_CONTROLLER)
>
> I see the Kconfig ...
>
> select AUXILIARY_BUS if RESET_CONTROLLER
>
> But I don't see how this code is omitted without AUXILIARY_BUS. Is this
> kconfig check safe to remove?
Ahhh that's what this directive was for.
I thought it was really odd to have an #if on RESET while auxialiary
device was supposed to properly decouple the clock and reset part.
To keep things as they were I'll add an #if on CONFIG_AUXILIARY_BUS I
wonder if this driver should select CONFIG_AUXILIARY_BUS instead ?
>
> Ira
>
>> -
>> -static void clk_imx8mp_audiomix_reset_unregister_adev(void *_adev)
>> -{
>> - struct auxiliary_device *adev = _adev;
>> -
>> - auxiliary_device_delete(adev);
>> - auxiliary_device_uninit(adev);
>> -}
>> -
>> -static void clk_imx8mp_audiomix_reset_adev_release(struct device *dev)
>> +static int clk_imx8mp_audiomix_reset_controller_register(struct device *dev)
>> {
>> - struct auxiliary_device *adev = to_auxiliary_dev(dev);
>> -
>> - kfree(adev);
>> -}
>> -
>> -static int clk_imx8mp_audiomix_reset_controller_register(struct device *dev,
>> - struct clk_imx8mp_audiomix_priv *priv)
>> -{
>> - struct auxiliary_device *adev __free(kfree) = NULL;
>> - int ret;
>> + struct auxiliary_device *adev;
>>
>> if (!of_property_present(dev->of_node, "#reset-cells"))
>> return 0;
>>
>> - adev = kzalloc(sizeof(*adev), GFP_KERNEL);
>> - if (!adev)
>> - return -ENOMEM;
>> -
>> - adev->name = "reset";
>> - adev->dev.parent = dev;
>> - adev->dev.release = clk_imx8mp_audiomix_reset_adev_release;
>> -
>> - ret = auxiliary_device_init(adev);
>> - if (ret)
>> - return ret;
>> -
>> - ret = auxiliary_device_add(adev);
>> - if (ret) {
>> - auxiliary_device_uninit(adev);
>> - return ret;
>> - }
>> -
>> - return devm_add_action_or_reset(dev, clk_imx8mp_audiomix_reset_unregister_adev,
>> - no_free_ptr(adev));
>> -}
>> -
>> -#else /* !CONFIG_RESET_CONTROLLER */
>> + adev = devm_auxiliary_device_create(dev, "reset", NULL, 0);
>> + if (IS_ERR_OR_NULL(adev))
>> + return PTR_ERR(adev);
>>
>> -static int clk_imx8mp_audiomix_reset_controller_register(struct device *dev,
>> - struct clk_imx8mp_audiomix_priv *priv)
>> -{
>> return 0;
>> }
>>
>> -#endif /* !CONFIG_RESET_CONTROLLER */
>> -
>> static void clk_imx8mp_audiomix_save_restore(struct device *dev, bool save)
>> {
>> struct clk_imx8mp_audiomix_priv *priv = dev_get_drvdata(dev);
>> @@ -408,7 +364,7 @@ static int clk_imx8mp_audiomix_probe(struct platform_device *pdev)
>> if (ret)
>> goto err_clk_register;
>>
>> - ret = clk_imx8mp_audiomix_reset_controller_register(dev, priv);
>> + ret = clk_imx8mp_audiomix_reset_controller_register(dev);
>> if (ret)
>> goto err_clk_register;
>>
>>
>> --
>> 2.45.2
>>
--
Jerome
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