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| author | Liguo Zhang <liguo.zhang@mediatek.com> | 2015-10-06 17:22:56 +0800 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2015-10-23 21:58:32 +0200 |
| commit | 09027e08ac329eddd8f4a06ddcef8022eded6b87 (patch) | |
| tree | 756b0e2e3355d240497bc80d148d5e42c4497fde /drivers/i2c | |
| parent | 1c4b6c3bcf30d0804db0d0647d8ebeb862c6f7e5 (diff) | |
| download | linux-stable-09027e08ac329eddd8f4a06ddcef8022eded6b87.tar.gz linux-stable-09027e08ac329eddd8f4a06ddcef8022eded6b87.tar.bz2 linux-stable-09027e08ac329eddd8f4a06ddcef8022eded6b87.zip | |
i2c: mediatek: add i2c resume support
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>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-mt65xx.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c index c02e6c018c39..9b867169142f 100644 --- a/drivers/i2c/busses/i2c-mt65xx.c +++ b/drivers/i2c/busses/i2c-mt65xx.c @@ -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), }, }; |