1 files changed, 159 insertions, 79 deletions

diff --git a/drivers/hwmon/w83627ehf.c b/drivers/hwmon/w83627ehf.c
index 36d7f270b14d..98aab4bea342 100644
--- a/drivers/hwmon/w83627ehf.c
+++ b/drivers/hwmon/w83627ehf.c
@@ -197,6 +197,9 @@ static const u16 W83627EHF_REG_TEMP_CONFIG[] = { 0, 0x152, 0x252, 0 };
 #define W83627EHF_REG_ALARM2            0x45A
 #define W83627EHF_REG_ALARM3            0x45B
 
+#define W83627EHF_REG_CASEOPEN_DET      0x42 /* SMI STATUS #2 */
+#define W83627EHF_REG_CASEOPEN_CLR      0x46 /* SMI MASK #3 */
+
 /* SmartFan registers */
 #define W83627EHF_REG_FAN_STEPUP_TIME 0x0f
 #define W83627EHF_REG_FAN_STEPDOWN_TIME 0x0e
@@ -316,7 +319,7 @@ static const char *const nct6776_temp_label[] = {
 
 #define NUM_REG_TEMP    ARRAY_SIZE(NCT6775_REG_TEMP)
 
-static inline int is_word_sized(u16 reg)
+static int is_word_sized(u16 reg)
 {
         return ((((reg & 0xff00) == 0x100
               || (reg & 0xff00) == 0x200)
@@ -385,23 +388,6 @@ div_from_reg(u8 reg)
         return 1 << reg;
 }
 
-static inline int
-temp_from_reg(u16 reg, s16 regval)
-{
-        if (is_word_sized(reg))
-                return LM75_TEMP_FROM_REG(regval);
-        return ((s8)regval) * 1000;
-}
-
-static inline u16
-temp_to_reg(u16 reg, long temp)
-{
-        if (is_word_sized(reg))
-                return LM75_TEMP_TO_REG(temp);
-        return (s8)DIV_ROUND_CLOSEST(SENSORS_LIMIT(temp, -127000, 128000),
-                                     1000);
-}
-
 /* Some of analog inputs have internal scaling (2x), 8mV is ADC LSB */
 
 static u8 scale_in[10] = { 8, 8, 16, 16, 8, 8, 8, 16, 16, 8 };
@@ -469,6 +455,7 @@ struct w83627ehf_data {
         s16 temp_max[9];
         s16 temp_max_hyst[9];
         u32 alarms;
+        u8 caseopen;
 
         u8 pwm_mode[4]; /* 0->DC variable voltage, 1->PWM variable duty cycle */
         u8 pwm_enable[4]; /* 1->manual
@@ -557,6 +544,26 @@ static int w83627ehf_write_value(struct w83627ehf_data *data, u16 reg,
         return 0;
 }
 
+/* We left-align 8-bit temperature values to make the code simpler */
+static u16 w83627ehf_read_temp(struct w83627ehf_data *data, u16 reg)
+{
+        u16 res;
+
+        res = w83627ehf_read_value(data, reg);
+        if (!is_word_sized(reg))
+                res <<= 8;
+
+        return res;
+}
+
+static int w83627ehf_write_temp(struct w83627ehf_data *data, u16 reg,
+                                       u16 value)
+{
+        if (!is_word_sized(reg))
+                value >>= 8;
+        return w83627ehf_write_value(data, reg, value);
+}
+
 /* This function assumes that the caller holds data->update_lock */
 static void nct6775_write_fan_div(struct w83627ehf_data *data, int nr)
 {
@@ -771,6 +778,9 @@ static struct w83627ehf_data *w83627ehf_update_device(struct device *dev)
 
                 /* Measured voltages and limits */
                 for (i = 0; i < data->in_num; i++) {
+                        if ((i == 6) && data->in6_skip)
+                                continue;
+
                         data->in[i] = w83627ehf_read_value(data,
                                       W83627EHF_REG_IN(i));
                         data->in_min[i] = w83627ehf_read_value(data,
@@ -855,15 +865,15 @@ static struct w83627ehf_data *w83627ehf_update_device(struct device *dev)
                 for (i = 0; i < NUM_REG_TEMP; i++) {
                         if (!(data->have_temp & (1 << i)))
                                 continue;
-                        data->temp[i] = w83627ehf_read_value(data,
+                        data->temp[i] = w83627ehf_read_temp(data,
                                                 data->reg_temp[i]);
                         if (data->reg_temp_over[i])
                                 data->temp_max[i]
-                                  = w83627ehf_read_value(data,
+                                  = w83627ehf_read_temp(data,
                                                 data->reg_temp_over[i]);
                         if (data->reg_temp_hyst[i])
                                 data->temp_max_hyst[i]
-                                  = w83627ehf_read_value(data,
+                                  = w83627ehf_read_temp(data,
                                                 data->reg_temp_hyst[i]);
                 }
 
@@ -874,6 +884,9 @@ static struct w83627ehf_data *w83627ehf_update_device(struct device *dev)
                                (w83627ehf_read_value(data,
                                         W83627EHF_REG_ALARM3) << 16);
 
+                data->caseopen = w83627ehf_read_value(data,
+                                                W83627EHF_REG_CASEOPEN_DET);
+
                 data->last_updated = jiffies;
                 data->valid = 1;
         }
@@ -1156,8 +1169,7 @@ show_##reg(struct device *dev, struct device_attribute *attr, \
         struct sensor_device_attribute *sensor_attr = \
                 to_sensor_dev_attr(attr); \
         int nr = sensor_attr->index; \
-        return sprintf(buf, "%d\n", \
-                       temp_from_reg(data->addr[nr], data->reg[nr])); \
+        return sprintf(buf, "%d\n", LM75_TEMP_FROM_REG(data->reg[nr])); \
 }
 show_temp_reg(reg_temp, temp);
 show_temp_reg(reg_temp_over, temp_max);
@@ -1178,9 +1190,8 @@ store_##reg(struct device *dev, struct device_attribute *attr, \
         if (err < 0) \
                 return err; \
         mutex_lock(&data->update_lock); \
-        data->reg[nr] = temp_to_reg(data->addr[nr], val); \
-        w83627ehf_write_value(data, data->addr[nr], \
-                              data->reg[nr]); \
+        data->reg[nr] = LM75_TEMP_TO_REG(val); \
+        w83627ehf_write_temp(data, data->addr[nr], data->reg[nr]); \
         mutex_unlock(&data->update_lock); \
         return count; \
 }
@@ -1655,6 +1666,48 @@ show_vid(struct device *dev, struct device_attribute *attr, char *buf)
 }
 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
 
+
+/* Case open detection */
+
+static ssize_t
+show_caseopen(struct device *dev, struct device_attribute *attr, char *buf)
+{
+        struct w83627ehf_data *data = w83627ehf_update_device(dev);
+
+        return sprintf(buf, "%d\n",
+                !!(data->caseopen & to_sensor_dev_attr_2(attr)->index));
+}
+
+static ssize_t
+clear_caseopen(struct device *dev, struct device_attribute *attr,
+                        const char *buf, size_t count)
+{
+        struct w83627ehf_data *data = dev_get_drvdata(dev);
+        unsigned long val;
+        u16 reg, mask;
+
+        if (strict_strtoul(buf, 10, &val) || val != 0)
+                return -EINVAL;
+
+        mask = to_sensor_dev_attr_2(attr)->nr;
+
+        mutex_lock(&data->update_lock);
+        reg = w83627ehf_read_value(data, W83627EHF_REG_CASEOPEN_CLR);
+        w83627ehf_write_value(data, W83627EHF_REG_CASEOPEN_CLR, reg | mask);
+        w83627ehf_write_value(data, W83627EHF_REG_CASEOPEN_CLR, reg & ~mask);
+        data->valid = 0;        /* Force cache refresh */
+        mutex_unlock(&data->update_lock);
+
+        return count;
+}
+
+static struct sensor_device_attribute_2 sda_caseopen[] = {
+        SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_caseopen,
+                        clear_caseopen, 0x80, 0x10),
+        SENSOR_ATTR_2(intrusion1_alarm, S_IWUSR | S_IRUGO, show_caseopen,
+                        clear_caseopen, 0x40, 0x40),
+};
+
 /*
  * Driver and device management
  */
@@ -1711,6 +1764,9 @@ static void w83627ehf_device_remove_files(struct device *dev)
                 device_remove_file(dev, &sda_temp_type[i].dev_attr);
         }
 
+        device_remove_file(dev, &sda_caseopen[0].dev_attr);
+        device_remove_file(dev, &sda_caseopen[1].dev_attr);
+
         device_remove_file(dev, &dev_attr_name);
         device_remove_file(dev, &dev_attr_cpu0_vid);
 }
@@ -1789,13 +1845,78 @@ static void w82627ehf_swap_tempreg(struct w83627ehf_data *data,
         data->reg_temp_config[r2] = tmp;
 }
 
+static void __devinit
+w83627ehf_check_fan_inputs(const struct w83627ehf_sio_data *sio_data,
+                           struct w83627ehf_data *data)
+{
+        int fan3pin, fan4pin, fan4min, fan5pin, regval;
+
+        superio_enter(sio_data->sioreg);
+
+        /* fan4 and fan5 share some pins with the GPIO and serial flash */
+        if (sio_data->kind == nct6775) {
+                /* On NCT6775, fan4 shares pins with the fdc interface */
+                fan3pin = 1;
+                fan4pin = !(superio_inb(sio_data->sioreg, 0x2A) & 0x80);
+                fan4min = 0;
+                fan5pin = 0;
+        } else if (sio_data->kind == nct6776) {
+                fan3pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x40);
+                fan4pin = !!(superio_inb(sio_data->sioreg, 0x1C) & 0x01);
+                fan5pin = !!(superio_inb(sio_data->sioreg, 0x1C) & 0x02);
+                fan4min = fan4pin;
+        } else if (sio_data->kind == w83667hg || sio_data->kind == w83667hg_b) {
+                fan3pin = 1;
+                fan4pin = superio_inb(sio_data->sioreg, 0x27) & 0x40;
+                fan5pin = superio_inb(sio_data->sioreg, 0x27) & 0x20;
+                fan4min = fan4pin;
+        } else {
+                fan3pin = 1;
+                fan4pin = !(superio_inb(sio_data->sioreg, 0x29) & 0x06);
+                fan5pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x02);
+                fan4min = fan4pin;
+        }
+
+        superio_exit(sio_data->sioreg);
+
+        data->has_fan = data->has_fan_min = 0x03; /* fan1 and fan2 */
+        data->has_fan |= (fan3pin << 2);
+        data->has_fan_min |= (fan3pin << 2);
+
+        if (sio_data->kind == nct6775 || sio_data->kind == nct6776) {
+                /*
+                 * NCT6775F and NCT6776F don't have the W83627EHF_REG_FANDIV1
+                 * register
+                 */
+                data->has_fan |= (fan4pin << 3) | (fan5pin << 4);
+                data->has_fan_min |= (fan4min << 3) | (fan5pin << 4);
+        } else {
+                /*
+                 * It looks like fan4 and fan5 pins can be alternatively used
+                 * as fan on/off switches, but fan5 control is write only :/
+                 * We assume that if the serial interface is disabled, designers
+                 * connected fan5 as input unless they are emitting log 1, which
+                 * is not the default.
+                 */
+                regval = w83627ehf_read_value(data, W83627EHF_REG_FANDIV1);
+                if ((regval & (1 << 2)) && fan4pin) {
+                        data->has_fan |= (1 << 3);
+                        data->has_fan_min |= (1 << 3);
+                }
+                if (!(regval & (1 << 1)) && fan5pin) {
+                        data->has_fan |= (1 << 4);
+                        data->has_fan_min |= (1 << 4);
+                }
+        }
+}
+
 static int __devinit w83627ehf_probe(struct platform_device *pdev)
 {
         struct device *dev = &pdev->dev;
         struct w83627ehf_sio_data *sio_data = dev->platform_data;
         struct w83627ehf_data *data;
         struct resource *res;
-        u8 fan3pin, fan4pin, fan4min, fan5pin, en_vrm10;
+        u8 en_vrm10;
         int i, err = 0;
 
         res = platform_get_resource(pdev, IORESOURCE_IO, 0);
@@ -2080,30 +2201,6 @@ static int __devinit w83627ehf_probe(struct platform_device *pdev)
                 }
         }
 
-        /* fan4 and fan5 share some pins with the GPIO and serial flash */
-        if (sio_data->kind == nct6775) {
-                /* On NCT6775, fan4 shares pins with the fdc interface */
-                fan3pin = 1;
-                fan4pin = !(superio_inb(sio_data->sioreg, 0x2A) & 0x80);
-                fan4min = 0;
-                fan5pin = 0;
-        } else if (sio_data->kind == nct6776) {
-                fan3pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x40);
-                fan4pin = !!(superio_inb(sio_data->sioreg, 0x1C) & 0x01);
-                fan5pin = !!(superio_inb(sio_data->sioreg, 0x1C) & 0x02);
-                fan4min = fan4pin;
-        } else if (sio_data->kind == w83667hg || sio_data->kind == w83667hg_b) {
-                fan3pin = 1;
-                fan4pin = superio_inb(sio_data->sioreg, 0x27) & 0x40;
-                fan5pin = superio_inb(sio_data->sioreg, 0x27) & 0x20;
-                fan4min = fan4pin;
-        } else {
-                fan3pin = 1;
-                fan4pin = !(superio_inb(sio_data->sioreg, 0x29) & 0x06);
-                fan5pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x02);
-                fan4min = fan4pin;
-        }
-
         if (fan_debounce &&
             (sio_data->kind == nct6775 || sio_data->kind == nct6776)) {
                 u8 tmp;
@@ -2121,34 +2218,7 @@ static int __devinit w83627ehf_probe(struct platform_device *pdev)
 
         superio_exit(sio_data->sioreg);
 
-        /* It looks like fan4 and fan5 pins can be alternatively used
-           as fan on/off switches, but fan5 control is write only :/
-           We assume that if the serial interface is disabled, designers
-           connected fan5 as input unless they are emitting log 1, which
-           is not the default. */
-
-        data->has_fan = data->has_fan_min = 0x03; /* fan1 and fan2 */
-
-        data->has_fan |= (fan3pin << 2);
-        data->has_fan_min |= (fan3pin << 2);
-
-        /*
-         * NCT6775F and NCT6776F don't have the W83627EHF_REG_FANDIV1 register
-         */
-        if (sio_data->kind == nct6775 || sio_data->kind == nct6776) {
-                data->has_fan |= (fan4pin << 3) | (fan5pin << 4);
-                data->has_fan_min |= (fan4min << 3) | (fan5pin << 4);
-        } else {
-                i = w83627ehf_read_value(data, W83627EHF_REG_FANDIV1);
-                if ((i & (1 << 2)) && fan4pin) {
-                        data->has_fan |= (1 << 3);
-                        data->has_fan_min |= (1 << 3);
-                }
-                if (!(i & (1 << 1)) && fan5pin) {
-                        data->has_fan |= (1 << 4);
-                        data->has_fan_min |= (1 << 4);
-                }
-        }
+        w83627ehf_check_fan_inputs(sio_data, data);
 
         /* Read fan clock dividers immediately */
         w83627ehf_update_fan_div_common(dev, data);
@@ -2269,6 +2339,16 @@ static int __devinit w83627ehf_probe(struct platform_device *pdev)
                         goto exit_remove;
         }
 
+        err = device_create_file(dev, &sda_caseopen[0].dev_attr);
+        if (err)
+                goto exit_remove;
+
+        if (sio_data->kind == nct6776) {
+                err = device_create_file(dev, &sda_caseopen[1].dev_attr);
+                if (err)
+                        goto exit_remove;
+        }
+
         err = device_create_file(dev, &dev_attr_name);
         if (err)
                 goto exit_remove;