From: Abel Vesa <abel.vesa@nxp.com>
To: Robin Gong <yibin.gong@nxp.com>,
Aisheng Dong <aisheng.dong@nxp.com>,
Fabio Estevam <fabio.estevam@nxp.com>,
Shawn Guo <shawnguo@kernel.org>, Stefan Agner <stefan@agner.ch>,
Linus Walleij <linus.walleij@linaro.org>,
Sascha Hauer <kernel@pengutronix.de>
Cc: dl-linux-imx <linux-imx@nxp.com>,
"linux-gpio@vger.kernel.org" <linux-gpio@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Abel Vesa <abel.vesa@nxp.com>
Subject: [PATCH v2 1/2] pinctrl: pinctrl-imx: Add suspend/resume for LPSR
Date: Mon, 25 Mar 2019 13:59:29 +0000 [thread overview]
Message-ID: <1553522352-20214-1-git-send-email-abel.vesa@nxp.com> (raw)
From: Robin Gong <yibin.gong@nxp.com>
To support pinctl hog restore after LPSR resume back,
add suspend/resume in pinctrl driver.
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
---
Changes since v1:
* fixed Robin's email
drivers/pinctrl/freescale/pinctrl-imx.c | 20 ++++++++++++++++++++
drivers/pinctrl/freescale/pinctrl-imx.h | 3 +++
2 files changed, 23 insertions(+)
diff --git a/drivers/pinctrl/freescale/pinctrl-imx.c b/drivers/pinctrl/freescale/pinctrl-imx.c
index 188001b..93c0253 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx.c
+++ b/drivers/pinctrl/freescale/pinctrl-imx.c
@@ -887,3 +887,23 @@ int imx_pinctrl_probe(struct platform_device *pdev,
return ret;
}
+
+int imx_pinctrl_suspend(struct device *dev)
+{
+ struct imx_pinctrl *ipctl = dev_get_drvdata(dev);
+
+ if (!ipctl)
+ return -EINVAL;
+
+ return pinctrl_force_sleep(ipctl->pctl);
+}
+
+int imx_pinctrl_resume(struct device *dev)
+{
+ struct imx_pinctrl *ipctl = dev_get_drvdata(dev);
+
+ if (!ipctl)
+ return -EINVAL;
+
+ return pinctrl_force_default(ipctl->pctl);
+}
diff --git a/drivers/pinctrl/freescale/pinctrl-imx.h b/drivers/pinctrl/freescale/pinctrl-imx.h
index 98a4889..795669c 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx.h
+++ b/drivers/pinctrl/freescale/pinctrl-imx.h
@@ -136,6 +136,9 @@ struct imx_pinctrl {
int imx_pinctrl_probe(struct platform_device *pdev,
const struct imx_pinctrl_soc_info *info);
+int imx_pinctrl_suspend(struct device *dev);
+int imx_pinctrl_resume(struct device *dev);
+
#ifdef CONFIG_PINCTRL_IMX_SCU
#define BM_PAD_CTL_GP_ENABLE BIT(30)
#define BM_PAD_CTL_IFMUX_ENABLE BIT(31)
--
2.7.4
next reply other threads:[~2019-03-25 13:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-25 13:59 Abel Vesa [this message]
2019-03-25 13:59 ` [PATCH v2 2/2] pinctrl: pinctrl-imx8mq: Add support PM operations Abel Vesa
2019-04-04 6:51 ` Aisheng Dong
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