From: Shenwei Wang <shenwei.wang@nxp.com>
To: "Uwe Kleine-König" <ukleinek@kernel.org>,
"Shawn Guo" <shawnguo@kernel.org>,
"Sascha Hauer" <s.hauer@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
linux-pwm@vger.kernel.org, imx@lists.linux.dev,
linux-arm-kernel@lists.infradead.org, linux-imx@nxp.com,
Shenwei Wang <shenwei.wang@nxp.com>
Subject: [PATCH] pwm: imx-tpm: Enable pinctrl setting for sleep state
Date: Tue, 14 May 2024 15:05:34 -0500 [thread overview]
Message-ID: <20240514200534.73847-1-shenwei.wang@nxp.com> (raw)
Apply the pinctrl setting of sleep state when system enters
suspend state.
Restore to the default pinctrl setting when system resumes.
Signed-off-by: Shenwei Wang <shenwei.wang@nxp.com>
---
drivers/pwm/pwm-imx-tpm.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/pwm/pwm-imx-tpm.c b/drivers/pwm/pwm-imx-tpm.c
index c50ddbac43c8..19245790c67c 100644
--- a/drivers/pwm/pwm-imx-tpm.c
+++ b/drivers/pwm/pwm-imx-tpm.c
@@ -393,7 +393,7 @@ static int pwm_imx_tpm_suspend(struct device *dev)
clk_disable_unprepare(tpm->clk);
- return 0;
+ return pinctrl_pm_select_sleep_state(dev);
}
static int pwm_imx_tpm_resume(struct device *dev)
@@ -401,6 +401,10 @@ static int pwm_imx_tpm_resume(struct device *dev)
struct imx_tpm_pwm_chip *tpm = dev_get_drvdata(dev);
int ret = 0;
+ ret = pinctrl_pm_select_default_state(dev);
+ if (ret)
+ return ret;
+
ret = clk_prepare_enable(tpm->clk);
if (ret)
dev_err(dev, "failed to prepare or enable clock: %d\n", ret);
--
2.34.1
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reply other threads:[~2024-05-14 20:06 UTC|newest]
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