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hwmon: (nct7904) Fix the incorrect value of vsen_mask & tcpu_mask & temp_mode in nct7904_data struct. 

Voltage sensors overlap with external temperature sensors. Detect
the multi-function of voltage, thermal diode, thermistor and
reserved from register VT_ADC_MD_REG to set value of vsen_mask &
tcpu_mask & temp_mode in nct7904_data struct. If the value is
reserved, needs to disable the vsen_mask & tcpu_mask.

Signed-off-by: amy.shih <amy.shih@advantech.com.tw>
Link: https://lore.kernel.org/r/20191014082451.2895-1-Amy.Shih@advantech.com.tw
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
amy.shih 2019-10-14 16:24:51 +08:00 committed by Guenter Roeck
parent 4f5cafb5cb
commit 6fc28b7e0a
1 changed files with 12 additions and 3 deletions
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15
drivers/hwmon/nct7904.c
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@ -82,6 +82,10 @@
#define FANCTL1_FMR_REG 0x00 /* Bank 3; 1 reg per channel */
#define FANCTL1_OUT_REG 0x10 /* Bank 3; 1 reg per channel */
#define VOLT_MONITOR_MODE 0x0
#define THERMAL_DIODE_MODE 0x1
#define THERMISTOR_MODE 0x3
#define ENABLE_TSI BIT(1)
static const unsigned short normal_i2c[] = {
@ -935,11 +939,16 @@ static int nct7904_probe(struct i2c_client *client,
for (i = 0; i < 4; i++) {
val = (ret >> (i * 2)) & 0x03;
bit = (1 << i);
if (val == 0) {
if (val == VOLT_MONITOR_MODE) {
data->tcpu_mask &= ~bit;
} else if (val == THERMAL_DIODE_MODE && i < 2) {
data->temp_mode |= bit;
data->vsen_mask &= ~(0x06 << (i * 2));
} else if (val == THERMISTOR_MODE) {
data->vsen_mask &= ~(0x02 << (i * 2));
} else {
if (val == 0x1 || val == 0x2)
data->temp_mode |= bit;
/* Reserved */
data->tcpu_mask &= ~bit;
data->vsen_mask &= ~(0x06 << (i * 2));
}
}