diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-designware-core.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-designware-core.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/i2c/busses/i2c-designware-core.c b/drivers/i2c/busses/i2c-designware-core.c index c5783ed9388d..24e8445f5a70 100644 --- a/drivers/i2c/busses/i2c-designware-core.c +++ b/drivers/i2c/busses/i2c-designware-core.c @@ -257,10 +257,15 @@ static u32 i2c_dw_scl_lcnt(u32 ic_clk, u32 tLOW, u32 tf, int offset) static void __i2c_dw_enable(struct dw_i2c_dev *dev, bool enable) { + dw_writel(dev, enable, DW_IC_ENABLE); +} + +static void __i2c_dw_enable_and_wait(struct dw_i2c_dev *dev, bool enable) +{ int timeout = 100; do { - dw_writel(dev, enable, DW_IC_ENABLE); + __i2c_dw_enable(dev, enable); if ((dw_readl(dev, DW_IC_ENABLE_STATUS) & 1) == enable) return; @@ -328,7 +333,7 @@ int i2c_dw_init(struct dw_i2c_dev *dev) comp_param1 = dw_readl(dev, DW_IC_COMP_PARAM_1); /* Disable the adapter */ - __i2c_dw_enable(dev, false); + __i2c_dw_enable_and_wait(dev, false); /* set standard and fast speed deviders for high/low periods */ @@ -441,7 +446,7 @@ static void i2c_dw_xfer_init(struct dw_i2c_dev *dev) u32 ic_con, ic_tar = 0; /* Disable the adapter */ - __i2c_dw_enable(dev, false); + __i2c_dw_enable_and_wait(dev, false); /* if the slave address is ten bit address, enable 10BITADDR */ ic_con = dw_readl(dev, DW_IC_CON); @@ -860,7 +865,7 @@ tx_aborted: void i2c_dw_disable(struct dw_i2c_dev *dev) { /* Disable controller */ - __i2c_dw_enable(dev, false); + __i2c_dw_enable_and_wait(dev, false); /* Disable all interupts */ dw_writel(dev, 0, DW_IC_INTR_MASK); |