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Wed, 30 Sep 2026 05:12:04 -0700 (PDT) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: multipart/signed; boundary=556a792abffd9ae695a05a5a547bd46464fba304192a1e2f92c220c5229c; micalg=pgp-sha512; protocol="application/pgp-signature" Date: Wed, 30 Sep 2026 14:11:55 +0200 Message-Id: From: "Markus Schneider-Pargmann" To: "Kendall Willis" , "Dmitry Torokhov" , "Rob Herring" , "Krzysztof Kozlowski" , "Conor Dooley" Cc: , , , , , , , Subject: Re: [PATCH v2 2/2] Input: gpio-keys - support wakeup pinctrl state on suspend X-Mailer: aerc 0.21.0-146-gb5c16ebe1835 References: <20260925-upstream-gpio-wakeup-v2-0-6c5533356246@ti.com> <20260925-upstream-gpio-wakeup-v2-2-6c5533356246@ti.com> In-Reply-To: <20260925-upstream-gpio-wakeup-v2-2-6c5533356246@ti.com> --556a792abffd9ae695a05a5a547bd46464fba304192a1e2f92c220c5229c Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 On Fri Sep 25, 2026 at 11:52 PM CEST, Kendall Willis wrote: > GPIO can be used as a wakeup source for TI K3 AM62 devices during > suspend to RAM states. The GPIO controller is powered off in these > states, so a wakeup enable flag must be set on the GPIO pin in the > pinctrl in order to allow wakeup. > > If the device is wakeup enabled, select the wakeup pinctrl state on > suspend and restore the default pinctrl state on resume. > > Signed-off-by: Kendall Willis > --- > drivers/input/keyboard/gpio_keys.c | 19 +++++++++++++++++++ > 1 file changed, 19 insertions(+) > > diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/= gpio_keys.c > index 129fc4212a5ed126496b331ce626682d441c53bf..d3fbc9776ac8cbdc7349a28df= 990ee609edf9e59 100644 > --- a/drivers/input/keyboard/gpio_keys.c > +++ b/drivers/input/keyboard/gpio_keys.c > @@ -28,6 +28,7 @@ > #include > #include > #include > +#include > #include > =20 > struct gpio_button_data { > @@ -60,6 +61,8 @@ struct gpio_keys_drvdata { > struct input_dev *input; > struct mutex disable_lock; > unsigned short *keymap; > + struct pinctrl *pinctrl; > + struct pinctrl_state *pinctrl_wakeup; > struct gpio_button_data data[]; > }; > =20 > @@ -884,6 +887,10 @@ static int gpio_keys_probe(struct platform_device *p= dev) > platform_set_drvdata(pdev, ddata); > input_set_drvdata(input, ddata); > =20 > + ddata->pinctrl =3D devm_pinctrl_get(dev); > + if (!IS_ERR_OR_NULL(ddata->pinctrl)) Should this check for -EPROBE_DEFER and error out in that case? Otherwise looks good to me. Best Markus > + ddata->pinctrl_wakeup =3D pinctrl_lookup_state(ddata->pinctrl, "wakeup= "); > + > input->name =3D pdata->name ? : pdev->name; > input->phys =3D "gpio-keys/input0"; > input->dev.parent =3D dev; > @@ -1010,6 +1017,12 @@ gpio_keys_enable_wakeup(struct gpio_keys_drvdata *= ddata) > int error; > int i; > =20 > + if (!IS_ERR_OR_NULL(ddata->pinctrl_wakeup)) { > + error =3D pinctrl_select_state(ddata->pinctrl, ddata->pinctrl_wakeup); > + if (error) > + return error; > + } > + > for (i =3D 0; i < ddata->pdata->nbuttons; i++) { > bdata =3D &ddata->data[i]; > if (bdata->button->wakeup) { > @@ -1023,6 +1036,9 @@ gpio_keys_enable_wakeup(struct gpio_keys_drvdata *d= data) > return 0; > =20 > err_out: > + if (!IS_ERR_OR_NULL(ddata->pinctrl_wakeup)) > + pinctrl_pm_select_default_state(ddata->input->dev.parent); > + > while (i--) { > bdata =3D &ddata->data[i]; > if (bdata->button->wakeup) > @@ -1039,6 +1055,9 @@ gpio_keys_disable_wakeup(struct gpio_keys_drvdata *= ddata) > struct gpio_button_data *bdata; > int i; > =20 > + if (!IS_ERR_OR_NULL(ddata->pinctrl_wakeup)) > + pinctrl_pm_select_default_state(ddata->input->dev.parent); > + > for (i =3D 0; i < ddata->pdata->nbuttons; i++) { > bdata =3D &ddata->data[i]; > bdata->suspended =3D false; --556a792abffd9ae695a05a5a547bd46464fba304192a1e2f92c220c5229c Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iKMEABYKAEsWIQSJYVVm/x+5xmOiprOFwVZpkBVKUwUCarz8ixsUgAAAAAAEAA5t YW51MiwyLjUrMS4xMiwyLDIRHG1zcEBiYXlsaWJyZS5jb20ACgkQhcFWaZAVSlPB rgD/RvPG9MIG+abj3sGJsRRPXb05u6y2oKt7iWyCnIJnPmcA/i4fICzTuQuY1jiO YEW6EdYtDK17cq0rhe1HPUWOOa8J =HyDX -----END PGP SIGNATURE----- --556a792abffd9ae695a05a5a547bd46464fba304192a1e2f92c220c5229c--