From: Ruihai Zhou <zhouruihai@huaqin.corp-partner.google.com>
Date: Mon, 8 Jan 2024 12:08:02 +0000 (+0800)
Subject: spi: spi-mt65xx: Support sleep pin control
X-Git-Tag: v6.9-rc1~142^2~64
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4247d7f2ca564bbede54054da1f35a359bb061bd;p=thirdparty%2Fkernel%2Flinux.git

spi: spi-mt65xx: Support sleep pin control

Supports configuring sleep pin control during system suspend to prevent
potential power leakage and additional power consumption.

Signed-off-by: Ruihai Zhou <zhouruihai@huaqin.corp-partner.google.com>
Link: https://msgid.link/r/20240108120802.7601-1-zhouruihai@huaqin.corp-partner.google.com
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c
index 8d5d170d49cc4..8d4633b353eef 100644
--- a/drivers/spi/spi-mt65xx.c
+++ b/drivers/spi/spi-mt65xx.c
@@ -13,6 +13,7 @@
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/gpio/consumer.h>
+#include <linux/pinctrl/consumer.h>
 #include <linux/platform_device.h>
 #include <linux/platform_data/spi-mt65xx.h>
 #include <linux/pm_runtime.h>
@@ -1316,6 +1317,8 @@ static int mtk_spi_suspend(struct device *dev)
 		clk_disable_unprepare(mdata->spi_hclk);
 	}
 
+	pinctrl_pm_select_sleep_state(dev);
+
 	return 0;
 }
 
@@ -1325,6 +1328,8 @@ static int mtk_spi_resume(struct device *dev)
 	struct spi_controller *host = dev_get_drvdata(dev);
 	struct mtk_spi *mdata = spi_controller_get_devdata(host);
 
+	pinctrl_pm_select_default_state(dev);
+
 	if (!pm_runtime_suspended(dev)) {
 		ret = clk_prepare_enable(mdata->spi_clk);
 		if (ret < 0) {