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Some small rounding and initializing bugs solved.

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git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@53 7894878c-1315-0410-8ee3-d5d059ff63e0
This commit is contained in:
Frodo Looijaard committed 1998-12-09 01:34:45 +00:00
1 parent 000b95cce0
commit 01e8dc6d7c
5 files changed
+24 -18
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TODO
+4
View File
@@ -1,5 +1,9 @@
Many, many things. Most notably:
* Check whether the FAN count divisors in the lm78 module are correct
(probably not!)
* Wouldn't it be better to display all natural voltages for the LM78 chip,
and do *all* conversions through a user program?
* kmalloc with GFP_KERNEL can cause a context switch! Check whether this is
safe everywhere it is used.
* Support 10-bit addresses. At this moment, they are supported nowhere, except
kernel/chips/lm75.c
+6 -4
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@@ -37,8 +37,8 @@
#define TEMP_TO_REG(val) (((((val) + 2) / 5) << 7) & 0xff80)
/* Initial values */
#define LM75_INIT_TEMP_OS 60
#define LM75_INIT_TEMP_HYST 50
#define LM75_INIT_TEMP_OS 600
#define LM75_INIT_TEMP_HYST 500
/* Each client has this additional data */
struct lm75_data {
@@ -170,8 +170,10 @@ int lm75_attach_adapter(struct i2c_adapter *adapter)
err = 0;
/* Initialize the LM75 chip */
lm75_write_value(new_client,LM75_REG_TEMP_OS,LM75_INIT_TEMP_OS);
lm75_write_value(new_client,LM75_REG_TEMP_HYST,LM75_INIT_TEMP_HYST);
lm75_write_value(new_client,LM75_REG_TEMP_OS,
TEMP_TO_REG(LM75_INIT_TEMP_OS));
lm75_write_value(new_client,LM75_REG_TEMP_HYST,
TEMP_TO_REG(LM75_INIT_TEMP_HYST));
lm75_write_value(new_client,LM75_REG_CONF,0);
continue;
kernel/chips/lm78.c
+4 -5
View File
@@ -63,18 +63,17 @@
#define LM78_REG_CHIPID 0x49
/* Conversions */
/* Conversions. Rounding is only done on the TO_REG variants. */
static int lm78_in_conv[7] = {10000, 10000, 10000, 16892, 38000,
-34768, -15050 };
#define IN_TO_REG(val,nr) (((((val) * 100000 / lm78_in_conv[nr]) + 8) / 16) \
& 0xff)
#define IN_FROM_REG(val,nr) (((val) * 16 * lm78_in_conv[nr]) / 100000)
#define FAN_TO_REG(val) ((((val)==0)?255:((1350000+(val))/((val)*2))) & 0xff)
#define FAN_FROM_REG(val) (((val)==0)?-1:\
((val)==255)?0:(1350000 + (val))/((val)*2))
#define FAN_TO_REG(val) ((val)==0?255:((1350000+(val))/((val)*2)) & 0xff)
#define FAN_FROM_REG(val) ((val)==0?-1:(val)==255?0:1350000/((val)*2))
#define TEMP_TO_REG(val) (((val)<0?(val/10)&0xff:(val/10)) & 0xff)
#define TEMP_TO_REG(val) (((val)<0?(((val)-5)/10)&0xff:((val)+5)/10) & 0xff)
#define TEMP_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*10)
#define VID_FROM_REG(val) ((val)==0x1f?0:(val)>=0x10?510-(val)*10:\
src/lm75.c
+6 -4
View File
@@ -37,8 +37,8 @@
#define TEMP_TO_REG(val) (((((val) + 2) / 5) << 7) & 0xff80)
/* Initial values */
#define LM75_INIT_TEMP_OS 60
#define LM75_INIT_TEMP_HYST 50
#define LM75_INIT_TEMP_OS 600
#define LM75_INIT_TEMP_HYST 500
/* Each client has this additional data */
struct lm75_data {
@@ -170,8 +170,10 @@ int lm75_attach_adapter(struct i2c_adapter *adapter)
err = 0;
/* Initialize the LM75 chip */
lm75_write_value(new_client,LM75_REG_TEMP_OS,LM75_INIT_TEMP_OS);
lm75_write_value(new_client,LM75_REG_TEMP_HYST,LM75_INIT_TEMP_HYST);
lm75_write_value(new_client,LM75_REG_TEMP_OS,
TEMP_TO_REG(LM75_INIT_TEMP_OS));
lm75_write_value(new_client,LM75_REG_TEMP_HYST,
TEMP_TO_REG(LM75_INIT_TEMP_HYST));
lm75_write_value(new_client,LM75_REG_CONF,0);
continue;
src/lm78.c
+4 -5
View File
@@ -63,18 +63,17 @@
#define LM78_REG_CHIPID 0x49
/* Conversions */
/* Conversions. Rounding is only done on the TO_REG variants. */
static int lm78_in_conv[7] = {10000, 10000, 10000, 16892, 38000,
-34768, -15050 };
#define IN_TO_REG(val,nr) (((((val) * 100000 / lm78_in_conv[nr]) + 8) / 16) \
& 0xff)
#define IN_FROM_REG(val,nr) (((val) * 16 * lm78_in_conv[nr]) / 100000)
#define FAN_TO_REG(val) ((((val)==0)?255:((1350000+(val))/((val)*2))) & 0xff)
#define FAN_FROM_REG(val) (((val)==0)?-1:\
((val)==255)?0:(1350000 + (val))/((val)*2))
#define FAN_TO_REG(val) ((val)==0?255:((1350000+(val))/((val)*2)) & 0xff)
#define FAN_FROM_REG(val) ((val)==0?-1:(val)==255?0:1350000/((val)*2))
#define TEMP_TO_REG(val) (((val)<0?(val/10)&0xff:(val/10)) & 0xff)
#define TEMP_TO_REG(val) (((val)<0?(((val)-5)/10)&0xff:((val)+5)/10) & 0xff)
#define TEMP_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*10)
#define VID_FROM_REG(val) ((val)==0x1f?0:(val)>=0x10?510-(val)*10:\