i2c: mediatek: add i2c resume support (09027e08) · Commits · 戴 / test

mt65xx i2c controller initial setting will be cleared after system suspend, so we should init mt65xx i2c controller again when system resume. Signed-off-by:

Liguo Zhang <liguo.zhang@mediatek.com> Signed-off-by:

Eddie Huang <eddie.huang@mediatek.com> Signed-off-by:

Wolfram Sang <wsa@the-dreams.de>

drivers/i2c/busses/i2c-mt65xx.c

+16 −0

Original line number	Diff line number	Diff line
		@@ -728,11 +728,27 @@ static int mtk_i2c_remove(struct platform_device *pdev)
		return 0;
		}

		#ifdef CONFIG_PM_SLEEP
		static int mtk_i2c_resume(struct device *dev)
		{
		struct mtk_i2c *i2c = dev_get_drvdata(dev);

		mtk_i2c_init_hw(i2c);

		return 0;
		}
		#endif

		static const struct dev_pm_ops mtk_i2c_pm = {
		SET_SYSTEM_SLEEP_PM_OPS(NULL, mtk_i2c_resume)
		};

		static struct platform_driver mtk_i2c_driver = {
		.probe = mtk_i2c_probe,
		.remove = mtk_i2c_remove,
		.driver = {
		.name = I2C_DRV_NAME,
		.pm = &mtk_i2c_pm,
		.of_match_table = of_match_ptr(mtk_i2c_of_match),
		},
		};

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