[PATCH] i2c: omap: re-factor omap_i2c_init function

[Shubhrajyoti Datta]

On Tue, Oct 23, 2012 at 11:27 PM, Felipe Balbi <balbi at ti.com> wrote:
> Hi,
>
> On Tue, Oct 23, 2012 at 11:26:15PM +0530, Shubhrajyoti Datta wrote:
>> >> @@ -1268,23 +1271,8 @@ static int omap_i2c_runtime_resume(struct device *dev)
>> >>  {
>> >>       struct omap_i2c_dev *_dev = dev_get_drvdata(dev);
>> >>
>> >> -     if (_dev->flags & OMAP_I2C_FLAG_RESET_REGS_POSTIDLE) {
>> >> -             omap_i2c_write_reg(_dev, OMAP_I2C_CON_REG, 0);
>> >> -             omap_i2c_write_reg(_dev, OMAP_I2C_PSC_REG, _dev->pscstate);
>> >> -             omap_i2c_write_reg(_dev, OMAP_I2C_SCLL_REG, _dev->scllstate);
>> >> -             omap_i2c_write_reg(_dev, OMAP_I2C_SCLH_REG, _dev->sclhstate);
>> >> -             omap_i2c_write_reg(_dev, OMAP_I2C_BUF_REG, _dev->bufstate);
>> >> -             omap_i2c_write_reg(_dev, OMAP_I2C_SYSC_REG, _dev->syscstate);
>> >> -             omap_i2c_write_reg(_dev, OMAP_I2C_WE_REG, _dev->westate);
>> >> -             omap_i2c_write_reg(_dev, OMAP_I2C_CON_REG, OMAP_I2C_CON_EN);
>> >> -     }
>> >> -
>> >> -     /*
>> >> -      * Don't write to this register if the IE state is 0 as it can
>> >> -      * cause deadlock.
>> >> -      */
>> >> -     if (_dev->iestate)
>> >> -             omap_i2c_write_reg(_dev, OMAP_I2C_IE_REG, _dev->iestate);
>> >
>> > this part is not on __omap_i2c_init() so you're potentially causing a
>> > regression here.
>>
>> iestate is set at init so cannot be zero. so the check was removed.
>
> so you never read it back ? Then you need to add a note for that in
> changelog, since this is a behavior change ;-)

Indeed will do.
>
>
> --
> balbi