Re: [PATCH v3 2/3] ab8500: make res_to_temp tables public

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On Thu, Feb 21, 2013 at 02:24:23PM -0800, Anton Vorontsov wrote:
> On Thu, Feb 21, 2013 at 06:32:40PM +0800, Hongbo Zhang wrote:
> > These NTC resistance to temperature tables should be public, so others such as
> > ab8500 hwmon driver can look up these tables to convert NTC resistance to
> > temperature.
> > 
> > Signed-off-by: Hongbo Zhang <hongbo.zhang@xxxxxxxxxx>
> > ---
> 
> For 1/3 and 2/3 patches:
> 
> Acked-by: Anton Vorontsov <anton@xxxxxxxxxx>
> 
> (Do you need EXPORT_SYMBOL()? You don't use this from modules?)
> 
I would think so. Also, the variables should be exported through an include
file.

The variable names are quite generic for global variables; we need to find
something more specific/descriptive.

There is also some overlap with functionality in drivers/hwmon/ntc_thermistor.c.
Wonder if it would be possible to unify the code.

Guenter

> Thanks.
> 
> >  drivers/power/ab8500_bmdata.c | 8 ++++++--
> >  1 file changed, 6 insertions(+), 2 deletions(-)
> > 
> > diff --git a/drivers/power/ab8500_bmdata.c b/drivers/power/ab8500_bmdata.c
> > index f034ae4..53f3324 100644
> > --- a/drivers/power/ab8500_bmdata.c
> > +++ b/drivers/power/ab8500_bmdata.c
> > @@ -11,7 +11,7 @@
> >   * Note that the res_to_temp table must be strictly sorted by falling resistance
> >   * values to work.
> >   */
> > -static struct abx500_res_to_temp temp_tbl_A_thermistor[] = {
> > +struct abx500_res_to_temp temp_tbl_A_thermistor[] = {
> >  	{-5, 53407},
> >  	{ 0, 48594},
> >  	{ 5, 43804},
> > @@ -29,7 +29,9 @@ static struct abx500_res_to_temp temp_tbl_A_thermistor[] = {
> >  	{65, 12500},
> >  };
> >  
> > -static struct abx500_res_to_temp temp_tbl_B_thermistor[] = {
> > +int temp_tbl_A_size = ARRAY_SIZE(temp_tbl_A_thermistor);
> > +
> > +struct abx500_res_to_temp temp_tbl_B_thermistor[] = {
> >  	{-5, 200000},
> >  	{ 0, 159024},
> >  	{ 5, 151921},
> > @@ -47,6 +49,8 @@ static struct abx500_res_to_temp temp_tbl_B_thermistor[] = {
> >  	{65,  82869},
> >  };
> >  
> > +int temp_tbl_B_size = ARRAY_SIZE(temp_tbl_B_thermistor);
> > +
> >  static struct abx500_v_to_cap cap_tbl_A_thermistor[] = {
> >  	{4171,	100},
> >  	{4114,	 95},
> > -- 
> > 1.8.0
> 

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