From a4f64ae2b5434fe1f3e8dc157dc5260628b0f582 Mon Sep 17 00:00:00 2001 From: Grzegorz Jaszczyk Date: Thu, 22 Dec 2016 16:54:02 +0100 Subject: [PATCH] i2c: mv64xxx: add suspend/resume support This commit implements suspend/resume support in the mv64xxx I2C controller driver. There is no need to implement a ->suspend() hook, as calling mv64xxx_i2c_hw_init() at ->resume() time is enough. Signed-off-by: Grzegorz Jaszczyk Reviewed-by: Nadav Haklai Reviewed-by: Lior Amsalem Tested-by: Lior Amsalem [Thomas: switch to dev_pm_ops, fix build warning when !PM.] Signed-off-by: Thomas Petazzoni Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-mv64xxx.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c index b4dec0841bc2..a50bd6891e27 100644 --- a/drivers/i2c/busses/i2c-mv64xxx.c +++ b/drivers/i2c/busses/i2c-mv64xxx.c @@ -977,11 +977,32 @@ mv64xxx_i2c_remove(struct platform_device *dev) return 0; } +#ifdef CONFIG_PM +static int mv64xxx_i2c_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct mv64xxx_i2c_data *drv_data = platform_get_drvdata(pdev); + + mv64xxx_i2c_hw_init(drv_data); + + return 0; +} + +static const struct dev_pm_ops mv64xxx_i2c_pm = { + .resume = mv64xxx_i2c_resume, +}; + +#define mv64xxx_i2c_pm_ops (&mv64xxx_i2c_pm) +#else +#define mv64xxx_i2c_pm_ops NULL +#endif + static struct platform_driver mv64xxx_i2c_driver = { .probe = mv64xxx_i2c_probe, .remove = mv64xxx_i2c_remove, .driver = { .name = MV64XXX_I2C_CTLR_NAME, + .pm = mv64xxx_i2c_pm_ops, .of_match_table = mv64xxx_i2c_of_match_table, }, }; -- 2.20.1