nct6775: Monitor additional temperature registers

The number of SMIOVT registers on NCT6779 and NCT6791 is limited to 2.
As result, the driver may not report some of the temperatures used for fan
control. Fortunately, the chip has registers to monitor those temperatures.
Add them to the list of temperatures to report.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/nct6775.c b/nct6775.c
index 37db9499ce98a9c78b08099eace22f847fa20f64..64a2362a0e65b6f4c787b0f622875c6c5a7cf538 100644 (file)
--- a/nct6775.c
+++ b/nct6775.c
@@ -275,6 +275,8 @@ static const u16 NCT6775_FAN_PULSE_SHIFT[] = { 0, 0, 0, 0, 0, 0 };
 static const u16 NCT6775_REG_TEMP[] = {
        0x27, 0x150, 0x250, 0x62b, 0x62c, 0x62d };
 
+static const u16 NCT6775_REG_TEMP_MON[] = { 0x73, 0x75, 0x77 };
+
 static const u16 NCT6775_REG_TEMP_CONFIG[ARRAY_SIZE(NCT6775_REG_TEMP)] = {
        0, 0x152, 0x252, 0x628, 0x629, 0x62A };
 static const u16 NCT6775_REG_TEMP_HYST[ARRAY_SIZE(NCT6775_REG_TEMP)] = {
@@ -455,6 +457,7 @@ static const u16 NCT6779_REG_CRITICAL_PWM[] = {
        0x137, 0x237, 0x337, 0x837, 0x937, 0xa37 };
 
 static const u16 NCT6779_REG_TEMP[] = { 0x27, 0x150 };
+static const u16 NCT6779_REG_TEMP_MON[] = { 0x73, 0x75, 0x77, 0x79, 0x7b };
 static const u16 NCT6779_REG_TEMP_CONFIG[ARRAY_SIZE(NCT6779_REG_TEMP)] = {
        0x18, 0x152 };
 static const u16 NCT6779_REG_TEMP_HYST[ARRAY_SIZE(NCT6779_REG_TEMP)] = {
@@ -535,6 +538,7 @@ static const u16 NCT6106_REG_IN[] = {
        0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x07, 0x08, 0x09 };
 
 static const u16 NCT6106_REG_TEMP[] = { 0x10, 0x11, 0x12, 0x13, 0x14, 0x15 };
+static const u16 NCT6106_REG_TEMP_MON[] = { 0x18, 0x19, 0x1a };
 static const u16 NCT6106_REG_TEMP_HYST[] = {
        0xc3, 0xc7, 0xcb, 0xcf, 0xd3, 0xd7 };
 static const u16 NCT6106_REG_TEMP_OVER[] = {
@@ -3292,9 +3296,9 @@ static int nct6775_probe(struct platform_device *pdev)
        int i, s, err = 0;
        int src, mask, available;
        const u16 *reg_temp, *reg_temp_over, *reg_temp_hyst, *reg_temp_config;
-       const u16 *reg_temp_alternate, *reg_temp_crit;
+       const u16 *reg_temp_mon, *reg_temp_alternate, *reg_temp_crit;
        const u16 *reg_temp_crit_l = NULL, *reg_temp_crit_h = NULL;
-       int num_reg_temp;
+       int num_reg_temp, num_reg_temp_mon;
        u8 cr2a;
        struct attribute_group *group;
 
@@ -3376,7 +3380,9 @@ static int nct6775_probe(struct platform_device *pdev)
                data->BEEP_BITS = NCT6106_BEEP_BITS;
 
                reg_temp = NCT6106_REG_TEMP;
+               reg_temp_mon = NCT6106_REG_TEMP_MON;
                num_reg_temp = ARRAY_SIZE(NCT6106_REG_TEMP);
+               num_reg_temp_mon = ARRAY_SIZE(NCT6106_REG_TEMP_MON);
                reg_temp_over = NCT6106_REG_TEMP_OVER;
                reg_temp_hyst = NCT6106_REG_TEMP_HYST;
                reg_temp_config = NCT6106_REG_TEMP_CONFIG;
@@ -3448,7 +3454,9 @@ static int nct6775_probe(struct platform_device *pdev)
                data->REG_BEEP = NCT6775_REG_BEEP;
 
                reg_temp = NCT6775_REG_TEMP;
+               reg_temp_mon = NCT6775_REG_TEMP_MON;
                num_reg_temp = ARRAY_SIZE(NCT6775_REG_TEMP);
+               num_reg_temp_mon = ARRAY_SIZE(NCT6775_REG_TEMP_MON);
                reg_temp_over = NCT6775_REG_TEMP_OVER;
                reg_temp_hyst = NCT6775_REG_TEMP_HYST;
                reg_temp_config = NCT6775_REG_TEMP_CONFIG;
@@ -3518,7 +3526,9 @@ static int nct6775_probe(struct platform_device *pdev)
                data->REG_BEEP = NCT6776_REG_BEEP;
 
                reg_temp = NCT6775_REG_TEMP;
+               reg_temp_mon = NCT6775_REG_TEMP_MON;
                num_reg_temp = ARRAY_SIZE(NCT6775_REG_TEMP);
+               num_reg_temp_mon = ARRAY_SIZE(NCT6775_REG_TEMP_MON);
                reg_temp_over = NCT6775_REG_TEMP_OVER;
                reg_temp_hyst = NCT6775_REG_TEMP_HYST;
                reg_temp_config = NCT6776_REG_TEMP_CONFIG;
@@ -3592,7 +3602,9 @@ static int nct6775_probe(struct platform_device *pdev)
                data->REG_BEEP = NCT6776_REG_BEEP;
 
                reg_temp = NCT6779_REG_TEMP;
+               reg_temp_mon = NCT6779_REG_TEMP_MON;
                num_reg_temp = ARRAY_SIZE(NCT6779_REG_TEMP);
+               num_reg_temp_mon = ARRAY_SIZE(NCT6779_REG_TEMP_MON);
                reg_temp_over = NCT6779_REG_TEMP_OVER;
                reg_temp_hyst = NCT6779_REG_TEMP_HYST;
                reg_temp_config = NCT6779_REG_TEMP_CONFIG;
@@ -3666,7 +3678,9 @@ static int nct6775_probe(struct platform_device *pdev)
                data->REG_BEEP = NCT6776_REG_BEEP;
 
                reg_temp = NCT6779_REG_TEMP;
+               reg_temp_mon = NCT6779_REG_TEMP_MON;
                num_reg_temp = ARRAY_SIZE(NCT6779_REG_TEMP);
+               num_reg_temp_mon = ARRAY_SIZE(NCT6779_REG_TEMP_MON);
                reg_temp_over = NCT6779_REG_TEMP_OVER;
                reg_temp_hyst = NCT6779_REG_TEMP_HYST;
                reg_temp_config = NCT6779_REG_TEMP_CONFIG;
@@ -3767,6 +3781,49 @@ static int nct6775_probe(struct platform_device *pdev)
                s++;
        }
 
+       /*
+        * Repeat with temperatures used for fan control.
+        * This set of registers does not support limits.
+        */
+       for (i = 0; i < num_reg_temp_mon; i++) {
+               if (reg_temp_mon[i] == 0)
+                       continue;
+
+               src = nct6775_read_value(data, data->REG_TEMP_SEL[i]) & 0x1f;
+               if (!src || (mask & (1 << src)))
+                       continue;
+
+               if (src >= data->temp_label_num ||
+                   !strlen(data->temp_label[src])) {
+                       dev_info(dev,
+                                "Invalid temperature source %d at index %d, source register 0x%x, temp register 0x%x\n",
+                                src, i, data->REG_TEMP_SEL[i], reg_temp_mon[i]);
+                       continue;
+               }
+
+               mask |= 1 << src;
+
+               /* Use fixed index for SYSTIN(1), CPUTIN(2), AUXTIN(3) */
+               if (src <= data->temp_fixed_num) {
+                       if (data->have_temp & (1 << (src - 1)))
+                               continue;
+                       data->have_temp |= 1 << (src - 1);
+                       data->have_temp_fixed |= 1 << (src - 1);
+                       data->reg_temp[0][src - 1] = reg_temp_mon[i];
+                       data->temp_src[src - 1] = src;
+                       continue;
+               }
+
+               if (s >= NUM_TEMP)
+                       continue;
+
+               /* Use dynamic index for other sources */
+               data->have_temp |= 1 << s;
+               data->reg_temp[0][s] = reg_temp_mon[i];
+               data->temp_src[s] = src;
+               s++;
+       }
+
 #ifdef USE_ALTERNATE
        /*
         * Go through the list of alternate temp registers and enable