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 8d5d170d49cc44686940a79d5bc9a80244dce4d1..8d4633b353eef662b224c966f7b9d9ba7527e076 100644 (file)
--- 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) {