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authorJean-Marc Spaggiari <jean-marc@spaggiari.org>2009-01-07 16:37:32 +0100
committerJean Delvare <khali@linux-fr.org>2009-01-07 16:37:32 +0100
commitb4da93e4b0ffc261c3530fe938aefd52854aa84c (patch)
tree2cc727f3d7050187bf4e83f1eee8136d1296f8b8 /drivers/hwmon/it87.c
parent3aed198c35567e5a721f52c0bde23167867e6af6 (diff)
hwmon: (it87) Add support for the ITE IT8720F
Allow it87.c to handle IT8720 chipset like IT8718 in order to retrieve voltage, temperatures and fans speed from sensors tools. Also updating the related documentation. Signed-off-by: Jean-Marc Spaggiari <jean-marc@spaggiari.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'drivers/hwmon/it87.c')
-rw-r--r--drivers/hwmon/it87.c30
1 files changed, 21 insertions, 9 deletions
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index b74c95735f95..0e0d692f0c9e 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -14,6 +14,7 @@
IT8712F Super I/O chip w/LPC interface
IT8716F Super I/O chip w/LPC interface
IT8718F Super I/O chip w/LPC interface
+ IT8720F Super I/O chip w/LPC interface
IT8726F Super I/O chip w/LPC interface
Sis950 A clone of the IT8705F
@@ -52,7 +53,7 @@
#define DRVNAME "it87"
-enum chips { it87, it8712, it8716, it8718 };
+enum chips { it87, it8712, it8716, it8718, it8720 };
static unsigned short force_id;
module_param(force_id, ushort, 0);
@@ -64,7 +65,10 @@ static struct platform_device *pdev;
#define DEV 0x07 /* Register: Logical device select */
#define VAL 0x2f /* The value to read/write */
#define PME 0x04 /* The device with the fan registers in it */
-#define GPIO 0x07 /* The device with the IT8718F VID value in it */
+
+/* The device with the IT8718F/IT8720F VID value in it */
+#define GPIO 0x07
+
#define DEVID 0x20 /* Register: Device ID */
#define DEVREV 0x22 /* Register: Device Revision */
@@ -113,6 +117,7 @@ superio_exit(void)
#define IT8705F_DEVID 0x8705
#define IT8716F_DEVID 0x8716
#define IT8718F_DEVID 0x8718
+#define IT8720F_DEVID 0x8720
#define IT8726F_DEVID 0x8726
#define IT87_ACT_REG 0x30
#define IT87_BASE_REG 0x60
@@ -150,8 +155,8 @@ static int fix_pwm_polarity;
#define IT87_REG_ALARM2 0x02
#define IT87_REG_ALARM3 0x03
-/* The IT8718F has the VID value in a different register, in Super-I/O
- configuration space. */
+/* The IT8718F and IT8720F have the VID value in a different register, in
+ Super-I/O configuration space. */
#define IT87_REG_VID 0x0a
/* The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
for fan divisors. Later IT8712F revisions must use 16-bit tachometer
@@ -282,7 +287,8 @@ static inline int has_16bit_fans(const struct it87_data *data)
return (data->type == it87 && data->revision >= 0x03)
|| (data->type == it8712 && data->revision >= 0x08)
|| data->type == it8716
- || data->type == it8718;
+ || data->type == it8718
+ || data->type == it8720;
}
static int it87_probe(struct platform_device *pdev);
@@ -992,6 +998,9 @@ static int __init it87_find(unsigned short *address,
case IT8718F_DEVID:
sio_data->type = it8718;
break;
+ case IT8720F_DEVID:
+ sio_data->type = it8720;
+ break;
case 0xffff: /* No device at all */
goto exit;
default:
@@ -1022,7 +1031,8 @@ static int __init it87_find(unsigned short *address,
int reg;
superio_select(GPIO);
- if (chip_type == it8718)
+ if ((chip_type == it8718) ||
+ (chip_type == it8720))
sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
reg = superio_inb(IT87_SIO_PINX2_REG);
@@ -1068,6 +1078,7 @@ static int __devinit it87_probe(struct platform_device *pdev)
"it8712",
"it8716",
"it8718",
+ "it8720",
};
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
@@ -1226,7 +1237,7 @@ static int __devinit it87_probe(struct platform_device *pdev)
}
if (data->type == it8712 || data->type == it8716
- || data->type == it8718) {
+ || data->type == it8718 || data->type == it8720) {
data->vrm = vid_which_vrm();
/* VID reading from Super-I/O config space if available */
data->vid = sio_data->vid_value;
@@ -1513,7 +1524,8 @@ static struct it87_data *it87_update_device(struct device *dev)
data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
/* The 8705 does not have VID capability.
- The 8718 does not use IT87_REG_VID for the same purpose. */
+ The 8718 and the 8720 don't use IT87_REG_VID for the
+ same purpose. */
if (data->type == it8712 || data->type == it8716) {
data->vid = it87_read_value(data, IT87_REG_VID);
/* The older IT8712F revisions had only 5 VID pins,
@@ -1608,7 +1620,7 @@ static void __exit sm_it87_exit(void)
MODULE_AUTHOR("Chris Gauthron, "
"Jean Delvare <khali@linux-fr.org>");
-MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F/8726F, SiS950 driver");
+MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F/8720F/8726F, SiS950 driver");
module_param(update_vbat, bool, 0);
MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
module_param(fix_pwm_polarity, bool, 0);