On 22 February 2013 08:49, Guenter Roeck linux@roeck-us.net wrote:
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@linaro.org
For 1/3 and 2/3 patches:
Acked-by: Anton Vorontsov anton@enomsg.org
(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.
I have these two lines in drivers/hwmon/ab8500.h, extern struct abx500_res_to_temp temp_tbl_A_thermistor[]; extern int temp_tbl_A_size; Do you mean this?
Or do you mean we should create a public header file holding all the tables? Where to place these tables really baffled me, if the current hwmon driver is acceptable, I will talk to the ab8500_bmdata.c author to discuss how to re-arrange all the tables, that should be another patch in future if possible.
The variable names are quite generic for global variables; we need to find something more specific/descriptive.
I noticed this too, this original naming isn't so good, there are also other names like this. I will rename these two tables I am using this time.
There is also some overlap with functionality in drivers/hwmon/ntc_thermistor.c. Wonder if it would be possible to unify the code.
It seems not so easy to unify the code for me, if necessary and possible, that should be another dedicated patch I think.
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