mirror of https://gitee.com/openkylin/linux.git
hwmon: (it87) Create voltage attributes only if voltage is enabled
On IT8782F and IT8783F, some voltage input pins may be disabled. Don't create sysfs attribute files if that is the case. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Guenter Roeck
Guenter Roeck
parent
a7871def65
commit
9172b5d124
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@ -234,6 +234,7 @@ struct it87_sio_data {
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u8 beep_pin;
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u8 internal; /* Internal sensors can be labeled */
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/* Features skipped based on config or DMI */
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u16 skip_in;
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u8 skip_vid;
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u8 skip_fan;
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u8 skip_pwm;
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@ -1371,41 +1372,73 @@ static ssize_t show_name(struct device *dev, struct device_attribute
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}
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static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
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static struct attribute *it87_attributes[] = {
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static struct attribute *it87_attributes_in[9][5] = {
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{
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&sensor_dev_attr_in0_input.dev_attr.attr,
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&sensor_dev_attr_in1_input.dev_attr.attr,
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&sensor_dev_attr_in2_input.dev_attr.attr,
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&sensor_dev_attr_in3_input.dev_attr.attr,
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&sensor_dev_attr_in4_input.dev_attr.attr,
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&sensor_dev_attr_in5_input.dev_attr.attr,
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&sensor_dev_attr_in6_input.dev_attr.attr,
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&sensor_dev_attr_in7_input.dev_attr.attr,
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&sensor_dev_attr_in8_input.dev_attr.attr,
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&sensor_dev_attr_in0_min.dev_attr.attr,
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&sensor_dev_attr_in1_min.dev_attr.attr,
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&sensor_dev_attr_in2_min.dev_attr.attr,
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&sensor_dev_attr_in3_min.dev_attr.attr,
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&sensor_dev_attr_in4_min.dev_attr.attr,
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&sensor_dev_attr_in5_min.dev_attr.attr,
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&sensor_dev_attr_in6_min.dev_attr.attr,
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&sensor_dev_attr_in7_min.dev_attr.attr,
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&sensor_dev_attr_in0_max.dev_attr.attr,
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&sensor_dev_attr_in1_max.dev_attr.attr,
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&sensor_dev_attr_in2_max.dev_attr.attr,
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&sensor_dev_attr_in3_max.dev_attr.attr,
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&sensor_dev_attr_in4_max.dev_attr.attr,
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&sensor_dev_attr_in5_max.dev_attr.attr,
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&sensor_dev_attr_in6_max.dev_attr.attr,
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&sensor_dev_attr_in7_max.dev_attr.attr,
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&sensor_dev_attr_in0_alarm.dev_attr.attr,
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NULL
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}, {
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&sensor_dev_attr_in1_input.dev_attr.attr,
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&sensor_dev_attr_in1_min.dev_attr.attr,
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&sensor_dev_attr_in1_max.dev_attr.attr,
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&sensor_dev_attr_in1_alarm.dev_attr.attr,
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NULL
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}, {
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&sensor_dev_attr_in2_input.dev_attr.attr,
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&sensor_dev_attr_in2_min.dev_attr.attr,
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&sensor_dev_attr_in2_max.dev_attr.attr,
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&sensor_dev_attr_in2_alarm.dev_attr.attr,
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NULL
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}, {
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&sensor_dev_attr_in3_input.dev_attr.attr,
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&sensor_dev_attr_in3_min.dev_attr.attr,
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&sensor_dev_attr_in3_max.dev_attr.attr,
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&sensor_dev_attr_in3_alarm.dev_attr.attr,
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NULL
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}, {
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&sensor_dev_attr_in4_input.dev_attr.attr,
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&sensor_dev_attr_in4_min.dev_attr.attr,
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&sensor_dev_attr_in4_max.dev_attr.attr,
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&sensor_dev_attr_in4_alarm.dev_attr.attr,
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NULL
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}, {
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&sensor_dev_attr_in5_input.dev_attr.attr,
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&sensor_dev_attr_in5_min.dev_attr.attr,
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&sensor_dev_attr_in5_max.dev_attr.attr,
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&sensor_dev_attr_in5_alarm.dev_attr.attr,
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NULL
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}, {
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&sensor_dev_attr_in6_input.dev_attr.attr,
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&sensor_dev_attr_in6_min.dev_attr.attr,
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&sensor_dev_attr_in6_max.dev_attr.attr,
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&sensor_dev_attr_in6_alarm.dev_attr.attr,
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NULL
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}, {
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&sensor_dev_attr_in7_input.dev_attr.attr,
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&sensor_dev_attr_in7_min.dev_attr.attr,
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&sensor_dev_attr_in7_max.dev_attr.attr,
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&sensor_dev_attr_in7_alarm.dev_attr.attr,
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NULL
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}, {
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&sensor_dev_attr_in8_input.dev_attr.attr,
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NULL
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} };
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static const struct attribute_group it87_group_in[9] = {
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{ .attrs = it87_attributes_in[0] },
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{ .attrs = it87_attributes_in[1] },
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{ .attrs = it87_attributes_in[2] },
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{ .attrs = it87_attributes_in[3] },
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{ .attrs = it87_attributes_in[4] },
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{ .attrs = it87_attributes_in[5] },
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{ .attrs = it87_attributes_in[6] },
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{ .attrs = it87_attributes_in[7] },
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{ .attrs = it87_attributes_in[8] },
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};
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static struct attribute *it87_attributes[] = {
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&sensor_dev_attr_temp1_input.dev_attr.attr,
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&sensor_dev_attr_temp2_input.dev_attr.attr,
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&sensor_dev_attr_temp3_input.dev_attr.attr,
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@ -1432,7 +1465,7 @@ static const struct attribute_group it87_group = {
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.attrs = it87_attributes,
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};
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static struct attribute *it87_attributes_beep[] = {
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static struct attribute *it87_attributes_in_beep[] = {
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&sensor_dev_attr_in0_beep.dev_attr.attr,
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&sensor_dev_attr_in1_beep.dev_attr.attr,
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&sensor_dev_attr_in2_beep.dev_attr.attr,
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@ -1441,7 +1474,10 @@ static struct attribute *it87_attributes_beep[] = {
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&sensor_dev_attr_in5_beep.dev_attr.attr,
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&sensor_dev_attr_in6_beep.dev_attr.attr,
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&sensor_dev_attr_in7_beep.dev_attr.attr,
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NULL
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};
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static struct attribute *it87_attributes_beep[] = {
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&sensor_dev_attr_temp1_beep.dev_attr.attr,
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&sensor_dev_attr_temp2_beep.dev_attr.attr,
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&sensor_dev_attr_temp3_beep.dev_attr.attr,
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@ -1696,7 +1732,6 @@ static int __init it87_find(unsigned short *address,
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sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
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} else if (sio_data->type == it8783) {
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int reg25, reg27, reg2A, reg2C, regEF;
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bool uart6;
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sio_data->skip_vid = 1; /* No VID */
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@ -1708,10 +1743,8 @@ static int __init it87_find(unsigned short *address,
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reg2C = superio_inb(IT87_SIO_PINX2_REG);
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regEF = superio_inb(IT87_SIO_SPI_REG);
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uart6 = reg2C & (1 << 2);
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/* Check if fan3 is there or not */
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if ((reg27 & (1 << 0)) || !uart6)
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if ((reg27 & (1 << 0)) || !(reg2C & (1 << 2)))
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sio_data->skip_fan |= (1 << 2);
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if ((reg25 & (1 << 4))
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|| (!(reg2A & (1 << 1)) && (regEF & (1 << 0))))
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@ -1724,19 +1757,39 @@ static int __init it87_find(unsigned short *address,
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sio_data->skip_pwm |= (1 << 1);
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/* VIN5 */
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if ((reg27 & (1 << 0)) || uart6)
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; /* No VIN5 */
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if ((reg27 & (1 << 0)) || (reg2C & (1 << 2)))
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sio_data->skip_in |= (1 << 5); /* No VIN5 */
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/* VIN6 */
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if ((reg27 & (1 << 1)) || uart6)
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; /* No VIN6 */
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if (reg27 & (1 << 1))
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sio_data->skip_in |= (1 << 6); /* No VIN6 */
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/*
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* VIN7
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* Does not depend on bit 2 of Reg2C, contrary to datasheet.
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*/
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if (reg27 & (1 << 2))
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; /* No VIN7 (unless internal) */
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if (reg27 & (1 << 2)) {
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/*
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* The data sheet is a bit unclear regarding the
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* internal voltage divider for VCCH5V. It says
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* "This bit enables and switches VIN7 (pin 91) to the
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* internal voltage divider for VCCH5V".
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* This is different to other chips, where the internal
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* voltage divider would connect VIN7 to an internal
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* voltage source. Maybe that is the case here as well.
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*
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* Since we don't know for sure, re-route it if that is
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* not the case, and ask the user to report if the
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* resulting voltage is sane.
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*/
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if (!(reg2C & (1 << 1))) {
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reg2C |= (1 << 1);
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superio_outb(IT87_SIO_PINX2_REG, reg2C);
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pr_notice("Routing internal VCCH5V to in7.\n");
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}
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pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
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pr_notice("Please report if it displays a reasonable voltage.\n");
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}
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if (reg2C & (1 << 0))
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sio_data->internal |= (1 << 0);
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@ -1747,6 +1800,7 @@ static int __init it87_find(unsigned short *address,
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} else {
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int reg;
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bool uart6;
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superio_select(GPIO);
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@ -1784,6 +1838,9 @@ static int __init it87_find(unsigned short *address,
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sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
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reg = superio_inb(IT87_SIO_PINX2_REG);
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uart6 = sio_data->type == it8782 && (reg & (1 << 2));
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/*
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* The IT8720F has no VIN7 pin, so VCCH should always be
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* routed internally to VIN7 with an internal divider.
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@ -1795,11 +1852,10 @@ static int __init it87_find(unsigned short *address,
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* setting. So we force the internal routing in this case.
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*
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* On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
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* If UART6 is enabled, re-route VIN7 to the internal divider.
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* If UART6 is enabled, re-route VIN7 to the internal divider
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* if that is not already the case.
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*/
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if ((sio_data->type == it8720 ||
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(sio_data->type == it8782 && (reg & (1 << 2))))
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&& !(reg & (1 << 1))) {
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if ((sio_data->type == it8720 || uart6) && !(reg & (1 << 1))) {
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reg |= (1 << 1);
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superio_outb(IT87_SIO_PINX2_REG, reg);
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pr_notice("Routing internal VCCH to in7\n");
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@ -1810,6 +1866,14 @@ static int __init it87_find(unsigned short *address,
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sio_data->type == it8728)
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sio_data->internal |= (1 << 1);
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/*
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* On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
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* While VIN7 can be routed to the internal voltage divider,
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* VIN5 and VIN6 are not available if UART6 is enabled.
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*/
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if (uart6)
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sio_data->skip_in |= (1 << 5) | (1 << 6);
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sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
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}
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if (sio_data->beep_pin)
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@ -1847,6 +1911,14 @@ static void it87_remove_files(struct device *dev)
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int i;
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sysfs_remove_group(&dev->kobj, &it87_group);
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for (i = 0; i < 9; i++) {
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if (sio_data->skip_in & (1 << i))
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continue;
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sysfs_remove_group(&dev->kobj, &it87_group_in[i]);
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if (it87_attributes_in_beep[i])
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sysfs_remove_file(&dev->kobj,
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it87_attributes_in_beep[i]);
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}
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if (sio_data->beep_pin)
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sysfs_remove_group(&dev->kobj, &it87_group_beep);
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for (i = 0; i < 5; i++) {
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@ -1949,6 +2021,20 @@ static int __devinit it87_probe(struct platform_device *pdev)
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if (err)
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goto ERROR2;
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for (i = 0; i < 9; i++) {
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if (sio_data->skip_in & (1 << i))
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continue;
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err = sysfs_create_group(&dev->kobj, &it87_group_in[i]);
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if (err)
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goto ERROR4;
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if (sio_data->beep_pin && it87_attributes_in_beep[i]) {
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err = sysfs_create_file(&dev->kobj,
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it87_attributes_in_beep[i]);
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if (err)
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goto ERROR4;
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}
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}
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if (sio_data->beep_pin) {
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err = sysfs_create_group(&dev->kobj, &it87_group_beep);
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if (err)
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