hwmon: (nct6775) Add support for NCT6797D

Add support for NCT6797D. With the exception of fan/pwm configuration
registers, it is mostly compatible with NCT6795D.

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

diff --git a/drivers/hwmon/nct6775.c b/drivers/hwmon/nct6775.c
index 77255f7..9569acf 100644 (file)
--- a/drivers/hwmon/nct6775.c
+++ b/drivers/hwmon/nct6775.c
@@ -42,6 +42,7 @@
  * nct6793d    15      6       6       2+6    0xd120 0xc1    0x5ca3
  * nct6795d    14      6       6       2+6    0xd350 0xc1    0x5ca3
  * nct6796d    14      7       7       2+6    0xd420 0xc1    0x5ca3
+ * nct6797d    14      7       7       2+6    0xd450 0xc1    0x5ca3
  *
  * #temp lists the number of monitored temperature sources (first value) plus
  * the number of directly connectable temperature sensors (second value).
@@ -69,7 +70,7 @@
 #define USE_ALTERNATE
 
 enum kinds { nct6106, nct6775, nct6776, nct6779, nct6791, nct6792, nct6793,
-            nct6795, nct6796 };
+            nct6795, nct6796, nct6797 };
 
 /* used to set data->name = nct6775_device_names[data->sio_kind] */
 static const char * const nct6775_device_names[] = {
@@ -82,6 +83,7 @@ static const char * const nct6775_device_names[] = {
        "nct6793",
        "nct6795",
        "nct6796",
+       "nct6797",
 };
 
 static const char * const nct6775_sio_names[] __initconst = {
@@ -94,6 +96,7 @@ static const char * const nct6775_sio_names[] __initconst = {
        "NCT6793D",
        "NCT6795D",
        "NCT6796D",
+       "NCT6797D",
 };
 
 static unsigned short force_id;
@@ -129,6 +132,7 @@ MODULE_PARM_DESC(fan_debounce, "Enable debouncing for fan RPM signal");
 #define SIO_NCT6793_ID         0xd120
 #define SIO_NCT6795_ID         0xd350
 #define SIO_NCT6796_ID         0xd420
+#define SIO_NCT6797_ID         0xd450
 #define SIO_ID_MASK            0xFFF0
 
 enum pwm_enable { off, manual, thermal_cruise, speed_cruise, sf3, sf4 };
@@ -504,7 +508,7 @@ static const s8 NCT6779_BEEP_BITS[] = {
 static const u16 NCT6779_REG_FAN[] = {
        0x4c0, 0x4c2, 0x4c4, 0x4c6, 0x4c8, 0x4ca, 0x4ce };
 static const u16 NCT6779_REG_FAN_PULSES[NUM_FAN] = {
-       0x644, 0x645, 0x646, 0x647, 0x648, 0x649 };
+       0x644, 0x645, 0x646, 0x647, 0x648, 0x649, 0x64f };
 
 static const u16 NCT6779_REG_CRITICAL_PWM_ENABLE[] = {
        0x136, 0x236, 0x336, 0x836, 0x936, 0xa36, 0xb36 };
@@ -1288,6 +1292,7 @@ static bool is_word_sized(struct nct6775_data *data, u16 reg)
        case nct6793:
        case nct6795:
        case nct6796:
+       case nct6797:
                return reg == 0x150 || reg == 0x153 || reg == 0x155 ||
                  (reg & 0xfff0) == 0x4c0 ||
                  reg == 0x402 ||
@@ -1643,6 +1648,7 @@ static void nct6775_update_pwm_limits(struct device *dev)
                case nct6793:
                case nct6795:
                case nct6796:
+               case nct6797:
                        reg = nct6775_read_value(data,
                                        data->REG_CRITICAL_PWM_ENABLE[i]);
                        if (reg & data->CRITICAL_PWM_ENABLE_MASK)
@@ -3077,6 +3083,7 @@ store_auto_pwm(struct device *dev, struct device_attribute *attr,
                case nct6793:
                case nct6795:
                case nct6796:
+               case nct6797:
                        nct6775_write_value(data, data->REG_CRITICAL_PWM[nr],
                                            val);
                        reg = nct6775_read_value(data,
@@ -3496,7 +3503,11 @@ nct6775_check_fan_inputs(struct nct6775_data *data)
                fan3pin = !(cr24 & 0x80);
                pwm3pin = cr24 & 0x08;
        } else {
-               /* NCT6779D, NCT6791D, NCT6792D, NCT6793D, NCT6795D, NCT6796D */
+               /*
+                * NCT6779D, NCT6791D, NCT6792D, NCT6793D, NCT6795D, NCT6796D,
+                * NCT6797D
+                */
+               int cr1a = superio_inb(sioreg, 0x1a);
                int cr1b = superio_inb(sioreg, 0x1b);
                int cr1c = superio_inb(sioreg, 0x1c);
                int cr1d = superio_inb(sioreg, 0x1d);
@@ -3505,6 +3516,7 @@ nct6775_check_fan_inputs(struct nct6775_data *data)
                int cr2d = superio_inb(sioreg, 0x2d);
                int cr2f = superio_inb(sioreg, 0x2f);
                bool dsw_en = cr2f & BIT(3);
+               bool ddr4_en = cr2f & BIT(4);
                int cre0;
                int creb;
                int cred;
@@ -3577,6 +3589,23 @@ nct6775_check_fan_inputs(struct nct6775_data *data)
 
                        pwm7pin = !(cr1d & (BIT(2) | BIT(3)));
                        break;
+               case nct6797:
+                       fan5pin |= !ddr4_en && (cr1b & BIT(5));
+                       fan5pin |= creb & BIT(5);
+
+                       fan6pin = cr2a & BIT(4);
+                       fan6pin |= creb & BIT(3);
+
+                       fan7pin = cr1a & BIT(1);
+
+                       pwm5pin |= (creb & BIT(4)) && !(cr2a & BIT(0));
+                       pwm5pin |= !ddr4_en && (cr2d & BIT(7));
+
+                       pwm6pin = creb & BIT(2);
+                       pwm6pin |= cred & BIT(2);
+
+                       pwm7pin = cr1d & BIT(4);
+                       break;
                default:        /* NCT6779D */
                        break;
                }
@@ -3954,8 +3983,10 @@ static int nct6775_probe(struct platform_device *pdev)
        case nct6793:
        case nct6795:
        case nct6796:
+       case nct6797:
                data->in_num = 15;
-               data->pwm_num = (data->kind == nct6796) ? 7 : 6;
+               data->pwm_num = (data->kind == nct6796 ||
+                                data->kind == nct6797) ? 7 : 6;
                data->auto_pwm_num = 4;
                data->has_fan_div = false;
                data->temp_fixed_num = 6;
@@ -3989,6 +4020,7 @@ static int nct6775_probe(struct platform_device *pdev)
                        data->virt_temp_mask = NCT6793_VIRT_TEMP_MASK;
                        break;
                case nct6795:
+               case nct6797:
                        data->temp_label = nct6795_temp_label;
                        data->temp_mask = NCT6795_TEMP_MASK;
                        data->virt_temp_mask = NCT6795_VIRT_TEMP_MASK;
@@ -4267,6 +4299,7 @@ static int nct6775_probe(struct platform_device *pdev)
        case nct6793:
        case nct6795:
        case nct6796:
+       case nct6797:
                break;
        }
 
@@ -4302,6 +4335,7 @@ static int nct6775_probe(struct platform_device *pdev)
                case nct6793:
                case nct6795:
                case nct6796:
+               case nct6797:
                        tmp |= 0x7e;
                        break;
                }
@@ -4504,6 +4538,9 @@ static int __init nct6775_find(int sioaddr, struct nct6775_sio_data *sio_data)
        case SIO_NCT6796_ID:
                sio_data->kind = nct6796;
                break;
+       case SIO_NCT6797_ID:
+               sio_data->kind = nct6797;
+               break;
        default:
                if (val != 0xffff)
                        pr_debug("unsupported chip ID: 0x%04x\n", val);