hwmon: (it87) Add support for IT8782F and IT8783E/F
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index 0b204e4..aebac13 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -19,6 +19,8 @@
* IT8726F Super I/O chip w/LPC interface
* IT8728F Super I/O chip w/LPC interface
* IT8758E Super I/O chip w/LPC interface
+ * IT8782F Super I/O chip w/LPC interface
+ * IT8783E/F Super I/O chip w/LPC interface
* Sis950 A clone of the IT8705F
*
* Copyright (C) 2001 Chris Gauthron
@@ -59,7 +61,8 @@
#define DRVNAME "it87"
-enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728 };
+enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8782,
+ it8783 };
static unsigned short force_id;
module_param(force_id, ushort, 0);
@@ -137,13 +140,18 @@
#define IT8721F_DEVID 0x8721
#define IT8726F_DEVID 0x8726
#define IT8728F_DEVID 0x8728
+#define IT8782F_DEVID 0x8782
+#define IT8783E_DEVID 0x8783
#define IT87_ACT_REG 0x30
#define IT87_BASE_REG 0x60
/* Logical device 7 registers (IT8712F and later) */
+#define IT87_SIO_GPIO1_REG 0x25
#define IT87_SIO_GPIO3_REG 0x27
#define IT87_SIO_GPIO5_REG 0x29
+#define IT87_SIO_PINX1_REG 0x2a /* Pin selection */
#define IT87_SIO_PINX2_REG 0x2c /* Pin selection */
+#define IT87_SIO_SPI_REG 0xef /* SPI function pin select */
#define IT87_SIO_VID_REG 0xfc /* VID value */
#define IT87_SIO_BEEP_PIN_REG 0xf6 /* Beep pin mapping */
@@ -304,31 +312,23 @@
|| data->type == it8728;
}
+static int adc_lsb(const struct it87_data *data, int nr)
+{
+ int lsb = has_12mv_adc(data) ? 12 : 16;
+ if (data->in_scaled & (1 << nr))
+ lsb <<= 1;
+ return lsb;
+}
+
static u8 in_to_reg(const struct it87_data *data, int nr, long val)
{
- long lsb;
-
- if (has_12mv_adc(data)) {
- if (data->in_scaled & (1 << nr))
- lsb = 24;
- else
- lsb = 12;
- } else
- lsb = 16;
-
- val = DIV_ROUND_CLOSEST(val, lsb);
+ val = DIV_ROUND_CLOSEST(val, adc_lsb(data, nr));
return SENSORS_LIMIT(val, 0, 255);
}
static int in_from_reg(const struct it87_data *data, int nr, int val)
{
- if (has_12mv_adc(data)) {
- if (data->in_scaled & (1 << nr))
- return val * 24;
- else
- return val * 12;
- } else
- return val * 16;
+ return val * adc_lsb(data, nr);
}
static inline u8 FAN_TO_REG(long rpm, int div)
@@ -407,7 +407,9 @@
|| data->type == it8718
|| data->type == it8720
|| data->type == it8721
- || data->type == it8728;
+ || data->type == it8728
+ || data->type == it8782
+ || data->type == it8783;
}
static inline int has_old_autopwm(const struct it87_data *data)
@@ -1651,6 +1653,12 @@
case IT8728F_DEVID:
sio_data->type = it8728;
break;
+ case IT8782F_DEVID:
+ sio_data->type = it8782;
+ break;
+ case IT8783E_DEVID:
+ sio_data->type = it8783;
+ break;
case 0xffff: /* No device at all */
goto exit;
default:
@@ -1686,16 +1694,68 @@
/* The IT8705F has a different LD number for GPIO */
superio_select(5);
sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
+ } else if (sio_data->type == it8783) {
+ int reg25, reg27, reg2A, reg2C, regEF;
+ bool uart6;
+
+ sio_data->skip_vid = 1; /* No VID */
+
+ superio_select(GPIO);
+
+ reg25 = superio_inb(IT87_SIO_GPIO1_REG);
+ reg27 = superio_inb(IT87_SIO_GPIO3_REG);
+ reg2A = superio_inb(IT87_SIO_PINX1_REG);
+ reg2C = superio_inb(IT87_SIO_PINX2_REG);
+ regEF = superio_inb(IT87_SIO_SPI_REG);
+
+ uart6 = reg2C & (1 << 2);
+
+ /* Check if fan3 is there or not */
+ if ((reg27 & (1 << 0)) || !uart6)
+ sio_data->skip_fan |= (1 << 2);
+ if ((reg25 & (1 << 4))
+ || (!(reg2A & (1 << 1)) && (regEF & (1 << 0))))
+ sio_data->skip_pwm |= (1 << 2);
+
+ /* Check if fan2 is there or not */
+ if (reg27 & (1 << 7))
+ sio_data->skip_fan |= (1 << 1);
+ if (reg27 & (1 << 3))
+ sio_data->skip_pwm |= (1 << 1);
+
+ /* VIN5 */
+ if ((reg27 & (1 << 0)) || uart6)
+ ; /* No VIN5 */
+
+ /* VIN6 */
+ if ((reg27 & (1 << 1)) || uart6)
+ ; /* No VIN6 */
+
+ /*
+ * VIN7
+ * Does not depend on bit 2 of Reg2C, contrary to datasheet.
+ */
+ if (reg27 & (1 << 2))
+ ; /* No VIN7 (unless internal) */
+
+ if (reg2C & (1 << 0))
+ sio_data->internal |= (1 << 0);
+ if (reg2C & (1 << 1))
+ sio_data->internal |= (1 << 1);
+
+ sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
+
} else {
int reg;
superio_select(GPIO);
reg = superio_inb(IT87_SIO_GPIO3_REG);
- if (sio_data->type == it8721 || sio_data->type == it8728) {
+ if (sio_data->type == it8721 || sio_data->type == it8728 ||
+ sio_data->type == it8782) {
/*
- * The IT8721F/IT8758E doesn't have VID pins at all,
- * not sure about the IT8728F.
+ * IT8721F/IT8758E, and IT8782F don't have VID pins
+ * at all, not sure about the IT8728F.
*/
sio_data->skip_vid = 1;
} else {
@@ -1733,8 +1793,13 @@
* configured, even though the IT8720F datasheet claims
* that the internal routing of VCCH to VIN7 is the default
* setting. So we force the internal routing in this case.
+ *
+ * On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
+ * If UART6 is enabled, re-route VIN7 to the internal divider.
*/
- if (sio_data->type == it8720 && !(reg & (1 << 1))) {
+ if ((sio_data->type == it8720 ||
+ (sio_data->type == it8782 && (reg & (1 << 2))))
+ && !(reg & (1 << 1))) {
reg |= (1 << 1);
superio_outb(IT87_SIO_PINX2_REG, reg);
pr_notice("Routing internal VCCH to in7\n");
@@ -1823,6 +1888,8 @@
"it8720",
"it8721",
"it8728",
+ "it8782",
+ "it8783",
};
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
@@ -1867,6 +1934,11 @@
data->in_scaled |= (1 << 7); /* in7 is VSB */
if (sio_data->internal & (1 << 2))
data->in_scaled |= (1 << 8); /* in8 is Vbat */
+ } else if (sio_data->type == it8782 || sio_data->type == it8783) {
+ if (sio_data->internal & (1 << 0))
+ data->in_scaled |= (1 << 3); /* in3 is VCC5V */
+ if (sio_data->internal & (1 << 1))
+ data->in_scaled |= (1 << 7); /* in7 is VCCH5V */
}
/* Initialize the IT87 chip */
@@ -2143,8 +2215,9 @@
it87_write_value(data, IT87_REG_FAN_16BIT,
tmp | 0x07);
}
- /* IT8705F only supports three fans. */
- if (data->type != it87) {
+ /* IT8705F, IT8782F, and IT8783E/F only support three fans. */
+ if (data->type != it87 && data->type != it8782 &&
+ data->type != it8783) {
if (tmp & (1 << 4))
data->has_fan |= (1 << 3); /* fan4 enabled */
if (tmp & (1 << 5))