> -----Original Message----- > From: Song Bao Hua (Barry Song) > Sent: Wednesday, March 31, 2021 10:54 AM > To: 'Andy Shevchenko' <andy.shevchenko@xxxxxxxxx> > Cc: yangyicong <yangyicong@xxxxxxxxxx>; wsa@xxxxxxxxxx; > andriy.shevchenko@xxxxxxxxxxxxxxx; linux-i2c@xxxxxxxxxxxxxxx; > Sergey.Semin@xxxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; > digetx@xxxxxxxxx; treding@xxxxxxxxxx; jarkko.nikula@xxxxxxxxxxxxxxx; > rmk+kernel@xxxxxxxxxxxxxxx; John Garry <john.garry@xxxxxxxxxx>; > mika.westerberg@xxxxxxxxxxxxxxx; Zengtao (B) <prime.zeng@xxxxxxxxxxxxx>; > Linuxarm <linuxarm@xxxxxxxxxx> > Subject: RE: [PATCH 5/5] i2c: designware: Switch over to i2c_freq_mode_string() > > > > From: Andy Shevchenko [mailto:andy.shevchenko@xxxxxxxxx] > Sent: Wednesday, March 31, 2021 10:57 AM > To: Song Bao Hua (Barry Song) <song.bao.hua@xxxxxxxxxxxxx> > Cc: yangyicong <yangyicong@xxxxxxxxxx>; wsa@xxxxxxxxxx; > andriy.shevchenko@xxxxxxxxxxxxxxx; linux-i2c@xxxxxxxxxxxxxxx; > Sergey.Semin@xxxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; > digetx@xxxxxxxxx; treding@xxxxxxxxxx; jarkko.nikula@xxxxxxxxxxxxxxx; > rmk+kernel@xxxxxxxxxxxxxxx; John Garry <john.garry@xxxxxxxxxx>; > mika.westerberg@xxxxxxxxxxxxxxx; Zengtao (B) <prime.zeng@xxxxxxxxxxxxx>; > Linuxarm <linuxarm@xxxxxxxxxx> > Subject: Re: [PATCH 5/5] i2c: designware: Switch over to i2c_freq_mode_string() > > > > On Wednesday, March 31, 2021, Song Bao Hua (Barry Song) > <song.bao.hua@xxxxxxxxxxxxx> wrote: > > > > -----Original Message----- > > From: yangyicong > > Sent: Wednesday, March 31, 2021 3:19 AM > > To: wsa@xxxxxxxxxx; andriy.shevchenko@xxxxxxxxxxxxxxx; > > linux-i2c@xxxxxxxxxxxxxxx; Sergey.Semin@xxxxxxxxxxxxxxxxxxxx; > > linux-kernel@xxxxxxxxxxxxxxx > > Cc: digetx@xxxxxxxxx; treding@xxxxxxxxxx; jarkko.nikula@xxxxxxxxxxxxxxx; > > rmk+kernel@xxxxxxxxxxxxxxx; Song Bao Hua (Barry Song) > > <song.bao.hua@xxxxxxxxxxxxx>; John Garry <john.garry@xxxxxxxxxx>; > > mika.westerberg@xxxxxxxxxxxxxxx; yangyicong <yangyicong@xxxxxxxxxx>; > Zengtao > > (B) <prime.zeng@xxxxxxxxxxxxx>; Linuxarm <linuxarm@xxxxxxxxxx> > > Subject: [PATCH 5/5] i2c: designware: Switch over to i2c_freq_mode_string() > > > > From: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> > > > > Use generic i2c_freq_mode_string() helper to print chosen bus speed. > > > > Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> > > Signed-off-by: Yicong Yang <yangyicong@xxxxxxxxxxxxx> > > --- > > drivers/i2c/busses/i2c-designware-master.c | 20 ++++---------------- > > 1 file changed, 4 insertions(+), 16 deletions(-) > > > > diff --git a/drivers/i2c/busses/i2c-designware-master.c > > b/drivers/i2c/busses/i2c-designware-master.c > > index dd27b9d..b64c4c8 100644 > > --- a/drivers/i2c/busses/i2c-designware-master.c > > +++ b/drivers/i2c/busses/i2c-designware-master.c > > @@ -35,10 +35,10 @@ static void i2c_dw_configure_fifo_master(struct > dw_i2c_dev > > *dev) > > > > static int i2c_dw_set_timings_master(struct dw_i2c_dev *dev) > > { > > - const char *mode_str, *fp_str = ""; > > u32 comp_param1; > > u32 sda_falling_time, scl_falling_time; > > struct i2c_timings *t = &dev->timings; > > + const char *fp_str = ""; > > u32 ic_clk; > > int ret; > > > > @@ -153,22 +153,10 @@ static int i2c_dw_set_timings_master(struct dw_i2c_dev > > *dev) > > > > ret = i2c_dw_set_sda_hold(dev); > > if (ret) > > - goto out; > > - > > - switch (dev->master_cfg & DW_IC_CON_SPEED_MASK) { > > - case DW_IC_CON_SPEED_STD: > > - mode_str = "Standard Mode"; > > - break; > > - case DW_IC_CON_SPEED_HIGH: > > - mode_str = "High Speed Mode"; > > - break; > > - default: > > - mode_str = "Fast Mode"; > > - } > > - dev_dbg(dev->dev, "Bus speed: %s%s\n", mode_str, fp_str); > > + return ret; > > > > -out: > > - return ret; > > + dev_dbg(dev->dev, "Bus speed: %s\n", > > i2c_freq_mode_string(t->bus_freq_hz)); > > > Weird the original code was printing both mode and fp. > > And you are printing mode only. > > >> Sorry, but I didn’t get what you mean here. The code is equivalent, and actually > it will print even more. > > The original code will print the string fp_str: > %s%s\n", mode_str, fp_str > > The new code is printing mode_str only: > %s > Isn't fp_str redundant? Do we need to change dev_dbg(dev->dev, "Fast Mode:%s HCNT:LCNT = %d:%d\n", fp_str...) > > + return 0; > > } > > > > /** > > -- > > 2.8.1 > > > -- > With Best Regards, > Andy Shevchenko
