[PATCH v5 03/12] hwmon: (nct6775) Add support for temperature sensors

From: Guenter Roeck
Date: Tue Feb 26 2013 - 13:26:24 EST

Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
drivers/hwmon/nct6775.c | 745 ++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 742 insertions(+), 3 deletions(-)

diff --git a/drivers/hwmon/nct6775.c b/drivers/hwmon/nct6775.c
index 435691f..aedf8f9 100644
--- a/drivers/hwmon/nct6775.c
+++ b/drivers/hwmon/nct6775.c
@@ -57,6 +57,8 @@
#include <linux/io.h>
#include "lm75.h"

+#define USE_ALTERNATE
+
enum kinds { nct6775, nct6776, nct6779 };

/* used to set data->name = nct6775_device_names[data->sio_kind] */
@@ -156,6 +158,9 @@ superio_exit(int ioreg)
* REG_CHIP_ID is at port 0x58
*/

+#define NUM_TEMP 10 /* Max number of temp attribute sets w/ limits*/
+#define NUM_TEMP_FIXED 6 /* Max number of fixed temp attribute sets */
+
#define NUM_REG_ALARM 4 /* Max number of alarm registers */

/* Common and NCT6775 specific data */
@@ -173,6 +178,7 @@ static const u16 NCT6775_REG_IN[] = {
};

#define NCT6775_REG_VBAT 0x5D
+#define NCT6775_REG_DIODE 0x5E

static const u16 NCT6775_REG_ALARM[NUM_REG_ALARM] = { 0x459, 0x45A, 0x45B };

@@ -187,11 +193,58 @@ static const s8 NCT6775_ALARM_BITS[] = {
4, 5, 13, -1, -1, -1, /* temp1..temp6 */
12, -1 }; /* intrusion0, intrusion1 */

+#define TEMP_ALARM_BASE 24
#define INTRUSION_ALARM_BASE 30

static const u8 NCT6775_REG_CR_CASEOPEN_CLR[] = { 0xe6, 0xee };
static const u8 NCT6775_CR_CASEOPEN_CLR_MASK[] = { 0x20, 0x01 };

+static const u16 NCT6775_REG_TEMP[] = {
+ 0x27, 0x150, 0x250, 0x62b, 0x62c, 0x62d };
+
+static const u16 NCT6775_REG_TEMP_CONFIG[] = {
+ 0, 0x152, 0x252, 0x628, 0x629, 0x62A };
+static const u16 NCT6775_REG_TEMP_HYST[] = {
+ 0x3a, 0x153, 0x253, 0x673, 0x678, 0x67D };
+static const u16 NCT6775_REG_TEMP_OVER[] = {
+ 0x39, 0x155, 0x255, 0x672, 0x677, 0x67C };
+
+static const u16 NCT6775_REG_TEMP_SOURCE[] = {
+ 0x621, 0x622, 0x623, 0x624, 0x625, 0x626 };
+
+static const u16 NCT6775_REG_TEMP_OFFSET[] = { 0x454, 0x455, 0x456 };
+
+static const char *const nct6775_temp_label[] = {
+ "",
+ "SYSTIN",
+ "CPUTIN",
+ "AUXTIN",
+ "AMD SB-TSI",
+ "PECI Agent 0",
+ "PECI Agent 1",
+ "PECI Agent 2",
+ "PECI Agent 3",
+ "PECI Agent 4",
+ "PECI Agent 5",
+ "PECI Agent 6",
+ "PECI Agent 7",
+ "PCH_CHIP_CPU_MAX_TEMP",
+ "PCH_CHIP_TEMP",
+ "PCH_CPU_TEMP",
+ "PCH_MCH_TEMP",
+ "PCH_DIM0_TEMP",
+ "PCH_DIM1_TEMP",
+ "PCH_DIM2_TEMP",
+ "PCH_DIM3_TEMP"
+};
+
+static const u16 NCT6775_REG_TEMP_ALTERNATE[ARRAY_SIZE(nct6775_temp_label) - 1]
+ = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x661, 0x662, 0x664 };
+
+static const u16 NCT6775_REG_TEMP_CRIT[ARRAY_SIZE(nct6775_temp_label) - 1]
+ = { 0, 0, 0, 0, 0xa00, 0xa01, 0xa02, 0xa03, 0xa04, 0xa05, 0xa06,
+ 0xa07 };
+
/* NCT6776 specific data */

static const s8 NCT6776_ALARM_BITS[] = {
@@ -203,6 +256,41 @@ static const s8 NCT6776_ALARM_BITS[] = {
4, 5, 13, -1, -1, -1, /* temp1..temp6 */
12, 9 }; /* intrusion0, intrusion1 */

+static const u16 NCT6776_REG_TEMP_CONFIG[11] = {
+ 0x18, 0x152, 0x252, 0x628, 0x629, 0x62A };
+
+static const char *const nct6776_temp_label[] = {
+ "",
+ "SYSTIN",
+ "CPUTIN",
+ "AUXTIN",
+ "SMBUSMASTER 0",
+ "SMBUSMASTER 1",
+ "SMBUSMASTER 2",
+ "SMBUSMASTER 3",
+ "SMBUSMASTER 4",
+ "SMBUSMASTER 5",
+ "SMBUSMASTER 6",
+ "SMBUSMASTER 7",
+ "PECI Agent 0",
+ "PECI Agent 1",
+ "PCH_CHIP_CPU_MAX_TEMP",
+ "PCH_CHIP_TEMP",
+ "PCH_CPU_TEMP",
+ "PCH_MCH_TEMP",
+ "PCH_DIM0_TEMP",
+ "PCH_DIM1_TEMP",
+ "PCH_DIM2_TEMP",
+ "PCH_DIM3_TEMP",
+ "BYTE_TEMP"
+};
+
+static const u16 NCT6776_REG_TEMP_ALTERNATE[ARRAY_SIZE(nct6776_temp_label) - 1]
+ = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x401, 0x402, 0x404 };
+
+static const u16 NCT6776_REG_TEMP_CRIT[ARRAY_SIZE(nct6776_temp_label) - 1]
+ = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x709, 0x70a };
+
/* NCT6779 specific data */

static const u16 NCT6779_REG_IN[] = {
@@ -221,6 +309,53 @@ static const s8 NCT6779_ALARM_BITS[] = {
4, 5, 13, -1, -1, -1, /* temp1..temp6 */
12, 9 }; /* intrusion0, intrusion1 */

+static const u16 NCT6779_REG_TEMP[] = { 0x27, 0x150 };
+static const u16 NCT6779_REG_TEMP_HYST[] = { 0x3a, 0x153, 0, 0, 0, 0 };
+static const u16 NCT6779_REG_TEMP_OVER[] = { 0x39, 0x155, 0, 0, 0, 0 };
+static const u16 NCT6779_REG_TEMP_OFFSET[] = {
+ 0x454, 0x455, 0x456, 0x44a, 0x44b, 0x44c };
+
+static const u16 NCT6779_REG_TEMP_CONFIG[11] = { 0x18, 0x152 };
+
+static const char *const nct6779_temp_label[] = {
+ "",
+ "SYSTIN",
+ "CPUTIN",
+ "AUXTIN0",
+ "AUXTIN1",
+ "AUXTIN2",
+ "AUXTIN3",
+ "",
+ "SMBUSMASTER 0",
+ "SMBUSMASTER 1",
+ "SMBUSMASTER 2",
+ "SMBUSMASTER 3",
+ "SMBUSMASTER 4",
+ "SMBUSMASTER 5",
+ "SMBUSMASTER 6",
+ "SMBUSMASTER 7",
+ "PECI Agent 0",
+ "PECI Agent 1",
+ "PCH_CHIP_CPU_MAX_TEMP",
+ "PCH_CHIP_TEMP",
+ "PCH_CPU_TEMP",
+ "PCH_MCH_TEMP",
+ "PCH_DIM0_TEMP",
+ "PCH_DIM1_TEMP",
+ "PCH_DIM2_TEMP",
+ "PCH_DIM3_TEMP",
+ "BYTE_TEMP"
+};
+
+static const u16 NCT6779_REG_TEMP_ALTERNATE[ARRAY_SIZE(nct6779_temp_label) - 1]
+ = { 0x490, 0x491, 0x492, 0x493, 0x494, 0x495, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0x400, 0x401, 0x402, 0x404, 0x405, 0x406, 0x407,
+ 0x408, 0 };
+
+static const u16 NCT6779_REG_TEMP_CRIT[ARRAY_SIZE(nct6779_temp_label) - 1]
+ = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x709, 0x70a };
+
/*
* Conversions
*/
@@ -256,14 +391,27 @@ struct nct6775_data {
struct device *hwmon_dev;
struct mutex lock;

+ u16 reg_temp[4][NUM_TEMP]; /* 0=temp, 1=temp_over, 2=temp_hyst,
+ * 3=temp_crit
+ */
+ u8 temp_src[NUM_TEMP];
+ u16 reg_temp_config[NUM_TEMP];
+ const char * const *temp_label;
+ int temp_label_num;
+
u16 REG_CONFIG;
u16 REG_VBAT;
+ u16 REG_DIODE;

const s8 *ALARM_BITS;

const u16 *REG_VIN;
const u16 *REG_IN_MINMAX[2];

+ const u16 *REG_TEMP_SOURCE; /* temp register sources */
+
+ const u16 *REG_TEMP_OFFSET;
+
const u16 *REG_ALARM;

struct mutex update_lock;
@@ -275,11 +423,18 @@ struct nct6775_data {
u8 in_num; /* number of in inputs we have */
u8 in[15][3]; /* [0]=in, [1]=in_max, [2]=in_min */

+ u8 temp_fixed_num; /* 3 or 6 */
+ u8 temp_type[NUM_TEMP_FIXED];
+ s8 temp_offset[NUM_TEMP_FIXED];
+ s16 temp[4][NUM_TEMP]; /* 0=temp, 1=temp_over, 2=temp_hyst,
+ * 3=temp_crit */
u64 alarms;

u8 vid;
u8 vrm;

+ u16 have_temp;
+ u16 have_temp_fixed;
u16 have_in;
};

@@ -379,10 +534,29 @@ static int nct6775_write_value(struct nct6775_data *data, u16 reg, u16 value)
return 0;
}

+/* We left-align 8-bit temperature values to make the code simpler */
+static u16 nct6775_read_temp(struct nct6775_data *data, u16 reg)
+{
+ u16 res;
+
+ res = nct6775_read_value(data, reg);
+ if (!is_word_sized(data, reg))
+ res <<= 8;
+
+ return res;
+}
+
+static int nct6775_write_temp(struct nct6775_data *data, u16 reg, u16 value)
+{
+ if (!is_word_sized(data, reg))
+ value >>= 8;
+ return nct6775_write_value(data, reg, value);
+}
+
static struct nct6775_data *nct6775_update_device(struct device *dev)
{
struct nct6775_data *data = dev_get_drvdata(dev);
- int i;
+ int i, j;

mutex_lock(&data->update_lock);

@@ -401,6 +575,22 @@ static struct nct6775_data *nct6775_update_device(struct device *dev)
data->REG_IN_MINMAX[1][i]);
}

+ /* Measured temperatures and limits */
+ for (i = 0; i < NUM_TEMP; i++) {
+ if (!(data->have_temp & (1 << i)))
+ continue;
+ for (j = 0; j < 4; j++) {
+ if (data->reg_temp[j][i])
+ data->temp[j][i]
+ = nct6775_read_temp(data,
+ data->reg_temp[j][i]);
+ }
+ if (!(data->have_temp_fixed & (1 << i)))
+ continue;
+ data->temp_offset[i]
+ = nct6775_read_value(data, data->REG_TEMP_OFFSET[i]);
+ }
+
data->alarms = 0;
for (i = 0; i < NUM_REG_ALARM; i++) {
u8 alarm;
@@ -682,6 +872,275 @@ static const struct attribute_group nct6775_group_in[15] = {
};

static ssize_t
+show_temp_label(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct nct6775_data *data = nct6775_update_device(dev);
+ struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
+ int nr = sattr->index;
+ return sprintf(buf, "%s\n", data->temp_label[data->temp_src[nr]]);
+}
+
+static ssize_t
+show_temp(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct nct6775_data *data = nct6775_update_device(dev);
+ struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
+ int nr = sattr->nr;
+ int index = sattr->index;
+
+ return sprintf(buf, "%d\n", LM75_TEMP_FROM_REG(data->temp[index][nr]));
+}
+
+static ssize_t
+store_temp(struct device *dev, struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct nct6775_data *data = dev_get_drvdata(dev);
+ struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
+ int nr = sattr->nr;
+ int index = sattr->index;
+ int err;
+ long val;
+
+ err = kstrtol(buf, 10, &val);
+ if (err < 0)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ data->temp[index][nr] = LM75_TEMP_TO_REG(val);
+ nct6775_write_temp(data, data->reg_temp[index][nr],
+ data->temp[index][nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static ssize_t
+show_temp_offset(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct nct6775_data *data = nct6775_update_device(dev);
+ struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
+
+ return sprintf(buf, "%d\n", data->temp_offset[sattr->index] * 1000);
+}
+
+static ssize_t
+store_temp_offset(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct nct6775_data *data = dev_get_drvdata(dev);
+ struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
+ int nr = sattr->index;
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err < 0)
+ return err;
+
+ val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), -128, 127);
+
+ mutex_lock(&data->update_lock);
+ data->temp_offset[nr] = val;
+ nct6775_write_value(data, data->REG_TEMP_OFFSET[nr], val);
+ mutex_unlock(&data->update_lock);
+
+ return count;
+}
+
+static ssize_t
+show_temp_type(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct nct6775_data *data = nct6775_update_device(dev);
+ struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
+ int nr = sattr->index;
+ return sprintf(buf, "%d\n", (int)data->temp_type[nr]);
+}
+
+static ssize_t
+store_temp_type(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct nct6775_data *data = nct6775_update_device(dev);
+ struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
+ int nr = sattr->index;
+ unsigned long val;
+ int err;
+ u8 vbat, diode, bit;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err < 0)
+ return err;
+
+ if (val != 1 && val != 3 && val != 4)
+ return -EINVAL;
+
+ mutex_lock(&data->update_lock);
+
+ data->temp_type[nr] = val;
+ vbat = nct6775_read_value(data, data->REG_VBAT) & ~(0x02 << nr);
+ diode = nct6775_read_value(data, data->REG_DIODE) & ~(0x02 << nr);
+ bit = 0x02 << nr;
+ switch (val) {
+ case 1: /* CPU diode (diode, current mode) */
+ vbat |= bit;
+ diode |= bit;
+ break;
+ case 3: /* diode, voltage mode */
+ vbat |= bit;
+ break;
+ case 4: /* thermistor */
+ break;
+ };
+ nct6775_write_value(data, data->REG_VBAT, vbat);
+ nct6775_write_value(data, data->REG_DIODE, diode);
+
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static struct sensor_device_attribute_2 sda_temp_input[] = {
+ SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0),
+ SENSOR_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0),
+ SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0),
+ SENSOR_ATTR_2(temp4_input, S_IRUGO, show_temp, NULL, 3, 0),
+ SENSOR_ATTR_2(temp5_input, S_IRUGO, show_temp, NULL, 4, 0),
+ SENSOR_ATTR_2(temp6_input, S_IRUGO, show_temp, NULL, 5, 0),
+ SENSOR_ATTR_2(temp7_input, S_IRUGO, show_temp, NULL, 6, 0),
+ SENSOR_ATTR_2(temp8_input, S_IRUGO, show_temp, NULL, 7, 0),
+ SENSOR_ATTR_2(temp9_input, S_IRUGO, show_temp, NULL, 8, 0),
+ SENSOR_ATTR_2(temp10_input, S_IRUGO, show_temp, NULL, 9, 0),
+};
+
+static struct sensor_device_attribute sda_temp_label[] = {
+ SENSOR_ATTR(temp1_label, S_IRUGO, show_temp_label, NULL, 0),
+ SENSOR_ATTR(temp2_label, S_IRUGO, show_temp_label, NULL, 1),
+ SENSOR_ATTR(temp3_label, S_IRUGO, show_temp_label, NULL, 2),
+ SENSOR_ATTR(temp4_label, S_IRUGO, show_temp_label, NULL, 3),
+ SENSOR_ATTR(temp5_label, S_IRUGO, show_temp_label, NULL, 4),
+ SENSOR_ATTR(temp6_label, S_IRUGO, show_temp_label, NULL, 5),
+ SENSOR_ATTR(temp7_label, S_IRUGO, show_temp_label, NULL, 6),
+ SENSOR_ATTR(temp8_label, S_IRUGO, show_temp_label, NULL, 7),
+ SENSOR_ATTR(temp9_label, S_IRUGO, show_temp_label, NULL, 8),
+ SENSOR_ATTR(temp10_label, S_IRUGO, show_temp_label, NULL, 9),
+};
+
+static struct sensor_device_attribute_2 sda_temp_max[] = {
+ SENSOR_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 0, 1),
+ SENSOR_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 1, 1),
+ SENSOR_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 2, 1),
+ SENSOR_ATTR_2(temp4_max, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 3, 1),
+ SENSOR_ATTR_2(temp5_max, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 4, 1),
+ SENSOR_ATTR_2(temp6_max, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 5, 1),
+ SENSOR_ATTR_2(temp7_max, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 6, 1),
+ SENSOR_ATTR_2(temp8_max, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 7, 1),
+ SENSOR_ATTR_2(temp9_max, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 8, 1),
+ SENSOR_ATTR_2(temp10_max, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 9, 1),
+};
+
+static struct sensor_device_attribute_2 sda_temp_max_hyst[] = {
+ SENSOR_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 0, 2),
+ SENSOR_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 1, 2),
+ SENSOR_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 2, 2),
+ SENSOR_ATTR_2(temp4_max_hyst, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 3, 2),
+ SENSOR_ATTR_2(temp5_max_hyst, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 4, 2),
+ SENSOR_ATTR_2(temp6_max_hyst, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 5, 2),
+ SENSOR_ATTR_2(temp7_max_hyst, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 6, 2),
+ SENSOR_ATTR_2(temp8_max_hyst, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 7, 2),
+ SENSOR_ATTR_2(temp9_max_hyst, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 8, 2),
+ SENSOR_ATTR_2(temp10_max_hyst, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 9, 2),
+};
+
+static struct sensor_device_attribute_2 sda_temp_crit[] = {
+ SENSOR_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 0, 3),
+ SENSOR_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 1, 3),
+ SENSOR_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 2, 3),
+ SENSOR_ATTR_2(temp4_crit, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 3, 3),
+ SENSOR_ATTR_2(temp5_crit, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 4, 3),
+ SENSOR_ATTR_2(temp6_crit, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 5, 3),
+ SENSOR_ATTR_2(temp7_crit, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 6, 3),
+ SENSOR_ATTR_2(temp8_crit, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 7, 3),
+ SENSOR_ATTR_2(temp9_crit, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 8, 3),
+ SENSOR_ATTR_2(temp10_crit, S_IRUGO | S_IWUSR, show_temp, store_temp,
+ 9, 3),
+};
+
+static struct sensor_device_attribute sda_temp_offset[] = {
+ SENSOR_ATTR(temp1_offset, S_IRUGO | S_IWUSR, show_temp_offset,
+ store_temp_offset, 0),
+ SENSOR_ATTR(temp2_offset, S_IRUGO | S_IWUSR, show_temp_offset,
+ store_temp_offset, 1),
+ SENSOR_ATTR(temp3_offset, S_IRUGO | S_IWUSR, show_temp_offset,
+ store_temp_offset, 2),
+ SENSOR_ATTR(temp4_offset, S_IRUGO | S_IWUSR, show_temp_offset,
+ store_temp_offset, 3),
+ SENSOR_ATTR(temp5_offset, S_IRUGO | S_IWUSR, show_temp_offset,
+ store_temp_offset, 4),
+ SENSOR_ATTR(temp6_offset, S_IRUGO | S_IWUSR, show_temp_offset,
+ store_temp_offset, 5),
+};
+
+static struct sensor_device_attribute sda_temp_type[] = {
+ SENSOR_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type,
+ store_temp_type, 0),
+ SENSOR_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type,
+ store_temp_type, 1),
+ SENSOR_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
+ store_temp_type, 2),
+ SENSOR_ATTR(temp4_type, S_IRUGO | S_IWUSR, show_temp_type,
+ store_temp_type, 3),
+ SENSOR_ATTR(temp5_type, S_IRUGO | S_IWUSR, show_temp_type,
+ store_temp_type, 4),
+ SENSOR_ATTR(temp6_type, S_IRUGO | S_IWUSR, show_temp_type,
+ store_temp_type, 5),
+};
+
+static struct sensor_device_attribute sda_temp_alarm[] = {
+ SENSOR_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL,
+ TEMP_ALARM_BASE),
+ SENSOR_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL,
+ TEMP_ALARM_BASE + 1),
+ SENSOR_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL,
+ TEMP_ALARM_BASE + 2),
+ SENSOR_ATTR(temp4_alarm, S_IRUGO, show_alarm, NULL,
+ TEMP_ALARM_BASE + 3),
+ SENSOR_ATTR(temp5_alarm, S_IRUGO, show_alarm, NULL,
+ TEMP_ALARM_BASE + 4),
+ SENSOR_ATTR(temp6_alarm, S_IRUGO, show_alarm, NULL,
+ TEMP_ALARM_BASE + 5),
+};
+
+#define NUM_TEMP_ALARM ARRAY_SIZE(sda_temp_alarm)
+
+static ssize_t
show_name(struct device *dev, struct device_attribute *attr, char *buf)
{
struct nct6775_data *data = dev_get_drvdata(dev);
@@ -766,6 +1225,23 @@ static void nct6775_device_remove_files(struct device *dev)
for (i = 0; i < data->in_num; i++)
sysfs_remove_group(&dev->kobj, &nct6775_group_in[i]);

+ for (i = 0; i < NUM_TEMP; i++) {
+ if (!(data->have_temp & (1 << i)))
+ continue;
+ device_remove_file(dev, &sda_temp_input[i].dev_attr);
+ device_remove_file(dev, &sda_temp_label[i].dev_attr);
+ device_remove_file(dev, &sda_temp_max[i].dev_attr);
+ device_remove_file(dev, &sda_temp_max_hyst[i].dev_attr);
+ device_remove_file(dev, &sda_temp_crit[i].dev_attr);
+ if (!(data->have_temp_fixed & (1 << i)))
+ continue;
+ device_remove_file(dev, &sda_temp_type[i].dev_attr);
+ device_remove_file(dev, &sda_temp_offset[i].dev_attr);
+ if (i >= NUM_TEMP_ALARM)
+ continue;
+ device_remove_file(dev, &sda_temp_alarm[i].dev_attr);
+ }
+
device_remove_file(dev, &sda_caseopen[0].dev_attr);
device_remove_file(dev, &sda_caseopen[1].dev_attr);

@@ -776,7 +1252,8 @@ static void nct6775_device_remove_files(struct device *dev)
/* Get the monitoring functions started */
static inline void nct6775_init_device(struct nct6775_data *data)
{
- u8 tmp;
+ int i;
+ u8 tmp, diode;

/* Start monitoring if needed */
if (data->REG_CONFIG) {
@@ -785,10 +1262,33 @@ static inline void nct6775_init_device(struct nct6775_data *data)
nct6775_write_value(data, data->REG_CONFIG, tmp | 0x01);
}

+ /* Enable temperature sensors if needed */
+ for (i = 0; i < NUM_TEMP; i++) {
+ if (!(data->have_temp & (1 << i)))
+ continue;
+ if (!data->reg_temp_config[i])
+ continue;
+ tmp = nct6775_read_value(data, data->reg_temp_config[i]);
+ if (tmp & 0x01)
+ nct6775_write_value(data, data->reg_temp_config[i],
+ tmp & 0xfe);
+ }
+
/* Enable VBAT monitoring if needed */
tmp = nct6775_read_value(data, data->REG_VBAT);
if (!(tmp & 0x01))
nct6775_write_value(data, data->REG_VBAT, tmp | 0x01);
+
+ diode = nct6775_read_value(data, data->REG_DIODE);
+
+ for (i = 0; i < data->temp_fixed_num; i++) {
+ if (!(data->have_temp_fixed & (1 << i)))
+ continue;
+ if ((tmp & (0x02 << i))) /* diode */
+ data->temp_type[i] = 3 - ((diode >> i) & 0x02);
+ else /* thermistor */
+ data->temp_type[i] = 4;
+ }
}

static int nct6775_probe(struct platform_device *pdev)
@@ -797,7 +1297,11 @@ static int nct6775_probe(struct platform_device *pdev)
struct nct6775_sio_data *sio_data = dev->platform_data;
struct nct6775_data *data;
struct resource *res;
- int i, err = 0;
+ 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;
+ int num_reg_temp;

res = platform_get_resource(pdev, IORESOURCE_IO, 0);
if (!devm_request_region(&pdev->dev, res->start, IOREGION_LENGTH,
@@ -820,44 +1324,233 @@ static int nct6775_probe(struct platform_device *pdev)
switch (data->kind) {
case nct6775:
data->in_num = 9;
+ data->temp_fixed_num = 3;

data->ALARM_BITS = NCT6775_ALARM_BITS;

+ data->temp_label = nct6775_temp_label;
+ data->temp_label_num = ARRAY_SIZE(nct6775_temp_label);
+
data->REG_CONFIG = NCT6775_REG_CONFIG;
data->REG_VBAT = NCT6775_REG_VBAT;
+ data->REG_DIODE = NCT6775_REG_DIODE;
data->REG_VIN = NCT6775_REG_IN;
data->REG_IN_MINMAX[0] = NCT6775_REG_IN_MIN;
data->REG_IN_MINMAX[1] = NCT6775_REG_IN_MAX;
+ data->REG_TEMP_OFFSET = NCT6775_REG_TEMP_OFFSET;
+ data->REG_TEMP_SOURCE = NCT6775_REG_TEMP_SOURCE;
data->REG_ALARM = NCT6775_REG_ALARM;
+
+ reg_temp = NCT6775_REG_TEMP;
+ num_reg_temp = ARRAY_SIZE(NCT6775_REG_TEMP);
+ reg_temp_over = NCT6775_REG_TEMP_OVER;
+ reg_temp_hyst = NCT6775_REG_TEMP_HYST;
+ reg_temp_config = NCT6775_REG_TEMP_CONFIG;
+ reg_temp_alternate = NCT6775_REG_TEMP_ALTERNATE;
+ reg_temp_crit = NCT6775_REG_TEMP_CRIT;
+
break;
case nct6776:
data->in_num = 9;
+ data->temp_fixed_num = 3;

data->ALARM_BITS = NCT6776_ALARM_BITS;

+ data->temp_label = nct6776_temp_label;
+ data->temp_label_num = ARRAY_SIZE(nct6776_temp_label);
+
data->REG_CONFIG = NCT6775_REG_CONFIG;
data->REG_VBAT = NCT6775_REG_VBAT;
+ data->REG_DIODE = NCT6775_REG_DIODE;
data->REG_VIN = NCT6775_REG_IN;
data->REG_IN_MINMAX[0] = NCT6775_REG_IN_MIN;
data->REG_IN_MINMAX[1] = NCT6775_REG_IN_MAX;
+ data->REG_TEMP_OFFSET = NCT6775_REG_TEMP_OFFSET;
+ data->REG_TEMP_SOURCE = NCT6775_REG_TEMP_SOURCE;
data->REG_ALARM = NCT6775_REG_ALARM;
+
+ reg_temp = NCT6775_REG_TEMP;
+ num_reg_temp = ARRAY_SIZE(NCT6775_REG_TEMP);
+ reg_temp_over = NCT6775_REG_TEMP_OVER;
+ reg_temp_hyst = NCT6775_REG_TEMP_HYST;
+ reg_temp_config = NCT6776_REG_TEMP_CONFIG;
+ reg_temp_alternate = NCT6776_REG_TEMP_ALTERNATE;
+ reg_temp_crit = NCT6776_REG_TEMP_CRIT;
+
break;
case nct6779:
data->in_num = 15;
+ data->temp_fixed_num = 6;

data->ALARM_BITS = NCT6779_ALARM_BITS;

+ data->temp_label = nct6779_temp_label;
+ data->temp_label_num = ARRAY_SIZE(nct6779_temp_label);
+
data->REG_CONFIG = NCT6775_REG_CONFIG;
data->REG_VBAT = NCT6775_REG_VBAT;
+ data->REG_DIODE = NCT6775_REG_DIODE;
data->REG_VIN = NCT6779_REG_IN;
data->REG_IN_MINMAX[0] = NCT6775_REG_IN_MIN;
data->REG_IN_MINMAX[1] = NCT6775_REG_IN_MAX;
+ data->REG_TEMP_OFFSET = NCT6779_REG_TEMP_OFFSET;
+ data->REG_TEMP_SOURCE = NCT6775_REG_TEMP_SOURCE;
data->REG_ALARM = NCT6779_REG_ALARM;
+
+ reg_temp = NCT6779_REG_TEMP;
+ num_reg_temp = ARRAY_SIZE(NCT6779_REG_TEMP);
+ reg_temp_over = NCT6779_REG_TEMP_OVER;
+ reg_temp_hyst = NCT6779_REG_TEMP_HYST;
+ reg_temp_config = NCT6779_REG_TEMP_CONFIG;
+ reg_temp_alternate = NCT6779_REG_TEMP_ALTERNATE;
+ reg_temp_crit = NCT6779_REG_TEMP_CRIT;
+
break;
default:
return -ENODEV;
}
data->have_in = (1 << data->in_num) - 1;
+ data->have_temp = 0;
+
+ /*
+ * On some boards, not all available temperature sources are monitored,
+ * even though some of the monitoring registers are unused.
+ * Get list of unused monitoring registers, then detect if any fan
+ * controls are configured to use unmonitored temperature sources.
+ * If so, assign the unmonitored temperature sources to available
+ * monitoring registers.
+ */
+ mask = 0;
+ available = 0;
+ for (i = 0; i < num_reg_temp; i++) {
+ if (reg_temp[i] == 0)
+ continue;
+
+ src = nct6775_read_value(data, data->REG_TEMP_SOURCE[i]) & 0x1f;
+ if (!src || (mask & (1 << src)))
+ available |= 1 << i;
+
+ mask |= 1 << src;
+ }
+
+ mask = 0;
+ s = NUM_TEMP_FIXED; /* First dynamic temperature attribute */
+ for (i = 0; i < num_reg_temp; i++) {
+ if (reg_temp[i] == 0)
+ continue;
+
+ src = nct6775_read_value(data, data->REG_TEMP_SOURCE[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_SOURCE[i], reg_temp[i]);
+ continue;
+ }
+
+ mask |= 1 << src;
+
+ /* Use fixed index for SYSTIN(1), CPUTIN(2), AUXTIN(3) */
+ if (src <= data->temp_fixed_num) {
+ data->have_temp |= 1 << (src - 1);
+ data->have_temp_fixed |= 1 << (src - 1);
+ data->reg_temp[0][src - 1] = reg_temp[i];
+ data->reg_temp[1][src - 1] = reg_temp_over[i];
+ data->reg_temp[2][src - 1] = reg_temp_hyst[i];
+ data->reg_temp_config[src - 1] = reg_temp_config[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[i];
+ data->reg_temp[1][s] = reg_temp_over[i];
+ data->reg_temp[2][s] = reg_temp_hyst[i];
+ data->reg_temp_config[s] = reg_temp_config[i];
+ if (reg_temp_crit[src - 1])
+ data->reg_temp[3][s] = reg_temp_crit[src - 1];
+
+ data->temp_src[s] = src;
+ s++;
+ }
+
+#ifdef USE_ALTERNATE
+ /*
+ * Go through the list of alternate temp registers and enable
+ * if possible.
+ * The temperature is already monitored if the respective bit in <mask>
+ * is set.
+ */
+ for (i = 0; i < data->temp_label_num - 1; i++) {
+ if (!reg_temp_alternate[i])
+ continue;
+ if (mask & (1 << (i + 1)))
+ continue;
+ if (i < data->temp_fixed_num) {
+ if (data->have_temp & (1 << i))
+ continue;
+ data->have_temp |= 1 << i;
+ data->have_temp_fixed |= 1 << i;
+ data->reg_temp[0][i] = reg_temp_alternate[i];
+ data->reg_temp[1][i] = reg_temp_over[i];
+ data->reg_temp[2][i] = reg_temp_hyst[i];
+ data->temp_src[i] = i + 1;
+ continue;
+ }
+
+ if (s >= NUM_TEMP) /* Abort if no more space */
+ break;
+
+ data->have_temp |= 1 << s;
+ data->reg_temp[0][s] = reg_temp_alternate[i];
+ data->temp_src[s] = i + 1;
+ s++;
+ }
+#endif /* USE_ALTERNATE */
+
+ switch (data->kind) {
+ case nct6775:
+ break;
+ case nct6776:
+ /*
+ * On NCT6776, AUXTIN and VIN3 pins are shared.
+ * Only way to detect it is to check if AUXTIN is used
+ * as a temperature source, and if that source is
+ * enabled.
+ *
+ * If that is the case, disable in6, which reports VIN3.
+ * Otherwise disable temp3.
+ */
+ if (data->have_temp & (1 << 2)) {
+ u8 reg = nct6775_read_value(data,
+ data->reg_temp_config[2]);
+ if (reg & 0x01)
+ data->have_temp &= ~(1 << 2);
+ else
+ data->have_in &= ~(1 << 6);
+ }
+ break;
+ case nct6779:
+ /*
+ * Shared pins:
+ * VIN4 / AUXTIN0
+ * VIN5 / AUXTIN1
+ * VIN6 / AUXTIN2
+ * VIN7 / AUXTIN3
+ *
+ * There does not seem to be a clean way to detect if VINx or
+ * AUXTINx is active, so for keep both sensor types enabled
+ * for now.
+ */
+ break;
+ }

/* Initialize the chip */
nct6775_init_device(data);
@@ -887,6 +1580,52 @@ static int nct6775_probe(struct platform_device *pdev)
goto exit_remove;
}

+ for (i = 0; i < NUM_TEMP; i++) {
+ if (!(data->have_temp & (1 << i)))
+ continue;
+ err = device_create_file(dev, &sda_temp_input[i].dev_attr);
+ if (err)
+ goto exit_remove;
+ if (data->temp_label) {
+ err = device_create_file(dev,
+ &sda_temp_label[i].dev_attr);
+ if (err)
+ goto exit_remove;
+ }
+ if (data->reg_temp[1][i]) {
+ err = device_create_file(dev,
+ &sda_temp_max[i].dev_attr);
+ if (err)
+ goto exit_remove;
+ }
+ if (data->reg_temp[2][i]) {
+ err = device_create_file(dev,
+ &sda_temp_max_hyst[i].dev_attr);
+ if (err)
+ goto exit_remove;
+ }
+ if (data->reg_temp[3][i]) {
+ err = device_create_file(dev,
+ &sda_temp_crit[i].dev_attr);
+ if (err)
+ goto exit_remove;
+ }
+ if (!(data->have_temp_fixed & (1 << i)))
+ continue;
+ err = device_create_file(dev, &sda_temp_type[i].dev_attr);
+ if (err)
+ goto exit_remove;
+ err = device_create_file(dev, &sda_temp_offset[i].dev_attr);
+ if (err)
+ goto exit_remove;
+ if (i >= NUM_TEMP_ALARM ||
+ data->ALARM_BITS[TEMP_ALARM_BASE + i] < 0)
+ continue;
+ err = device_create_file(dev, &sda_temp_alarm[i].dev_attr);
+ if (err)
+ goto exit_remove;
+ }
+
for (i = 0; i < ARRAY_SIZE(sda_caseopen); i++) {
if (data->ALARM_BITS[INTRUSION_ALARM_BASE + i] < 0)
continue;
--
1.7.9.7

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