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authoramy.shih <amy.shih@advantech.com.tw>2019-10-14 16:24:51 +0800
committerGuenter Roeck <linux@roeck-us.net>2019-10-20 09:22:48 -0700
commit6fc28b7e0aac8a72217b314dfb5208321d9448e2 (patch)
tree100678f883e8d6bf7b079b4e98dcaebd2fa3e87d /drivers/hwmon/nct7904.c
parent4f5cafb5cb8471e54afdc9054d973535614f7675 (diff)
downloadlinux-6fc28b7e0aac8a72217b314dfb5208321d9448e2.tar.bz2
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>
Diffstat (limited to 'drivers/hwmon/nct7904.c')
-rw-r--r--drivers/hwmon/nct7904.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/hwmon/nct7904.c b/drivers/hwmon/nct7904.c
index b26419dbe840..281c81edabc6 100644
--- a/drivers/hwmon/nct7904.c
+++ b/drivers/hwmon/nct7904.c
@@ -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));
}
}