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hwmon: (nct6775) Add support for NCT6797D
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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>
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Guenter Roeck committed Oct 11, 2018
1 parent 3be8c9d commit e41da28
Showing 1 changed file with 41 additions and 4 deletions.
45 changes: 41 additions & 4 deletions drivers/hwmon/nct6775.c
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Original file line number Diff line number Diff line change
Expand Up @@ -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).
Expand Down Expand Up @@ -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[] = {
Expand All @@ -82,6 +83,7 @@ static const char * const nct6775_device_names[] = {
"nct6793",
"nct6795",
"nct6796",
"nct6797",
};

static const char * const nct6775_sio_names[] __initconst = {
Expand All @@ -94,6 +96,7 @@ static const char * const nct6775_sio_names[] __initconst = {
"NCT6793D",
"NCT6795D",
"NCT6796D",
"NCT6797D",
};

static unsigned short force_id;
Expand Down Expand Up @@ -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 };
Expand Down Expand Up @@ -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 };
Expand Down Expand Up @@ -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 ||
Expand Down Expand Up @@ -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)
Expand Down Expand Up @@ -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,
Expand Down Expand Up @@ -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);
Expand All @@ -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;
Expand Down Expand Up @@ -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;
}
Expand Down Expand Up @@ -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;
Expand Down Expand Up @@ -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;
Expand Down Expand Up @@ -4267,6 +4299,7 @@ static int nct6775_probe(struct platform_device *pdev)
case nct6793:
case nct6795:
case nct6796:
case nct6797:
break;
}

Expand Down Expand Up @@ -4302,6 +4335,7 @@ static int nct6775_probe(struct platform_device *pdev)
case nct6793:
case nct6795:
case nct6796:
case nct6797:
tmp |= 0x7e;
break;
}
Expand Down Expand Up @@ -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);
Expand Down

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