diff options
| author |   Jun Gao <jun.gao@mediatek.com> | 2017-12-19 14:51:03 +0800 |
|---|---|---|
| committer |   Wolfram Sang <wsa@the-dreams.de> | 2018-01-04 00:54:02 +0100 |
| commit | f6762cedbef91ad1da338538efa811856a717d57 (patch) | |
| tree | ecbeae62f6862dd2b6f25fe7b3972df484ef265d /drivers/i2c | |
| parent | i2c: mediatek: Add i2c compatible for MediaTek MT2712 (diff) | |
| download | linux-dev-f6762cedbef91ad1da338538efa811856a717d57.tar.xz linux-dev-f6762cedbef91ad1da338538efa811856a717d57.zip | |
i2c: mediatek: Enable i2c module clock before i2c registers access.
Make sure i2c module clock has been enabled before i2c registers
access.
Signed-off-by: Jun Gao <jun.gao@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 | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c index 58d6401871a9..cf23a746cc17 100644 --- a/drivers/i2c/busses/i2c-mt65xx.c +++ b/drivers/i2c/busses/i2c-mt65xx.c @@ -861,10 +861,19 @@ static int mtk_i2c_remove(struct platform_device *pdev) #ifdef CONFIG_PM_SLEEP static int mtk_i2c_resume(struct device *dev) { + int ret; struct mtk_i2c *i2c = dev_get_drvdata(dev); + ret = mtk_i2c_clock_enable(i2c); + if (ret) { + dev_err(dev, "clock enable failed!\n"); + return ret; + } + mtk_i2c_init_hw(i2c); + mtk_i2c_clock_disable(i2c); + return 0; } #endif |