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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-27 10:42:48 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-27 10:42:52 +0100 |
| commit | 4708ac49305bbcd511600d4af71a4c6dca15af65 (patch) | |
| tree | 77ba5c83a7d4f4a119e3fd524d82adc297df1e35 /drivers/hwmon/it87.c | |
| parent | 1dbd30e9890fd69e50b17edd70ca583546b0fe4e (diff) | |
| parent | 2f7989efd4398d92b8adffce2e07dd043a0895fe (diff) | |
Merge branch 'origin' into misc
Diffstat (limited to 'drivers/hwmon/it87.c')
| -rw-r--r-- | drivers/hwmon/it87.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c index 5be09c048c5..25763d2223b 100644 --- a/drivers/hwmon/it87.c +++ b/drivers/hwmon/it87.c @@ -80,6 +80,13 @@ superio_inb(int reg) return inb(VAL); } +static inline void +superio_outb(int reg, int val) +{ + outb(reg, REG); + outb(val, VAL); +} + static int superio_inw(int reg) { int val; @@ -1517,6 +1524,21 @@ static int __init it87_find(unsigned short *address, sio_data->vid_value = superio_inb(IT87_SIO_VID_REG); reg = superio_inb(IT87_SIO_PINX2_REG); + /* + * The IT8720F has no VIN7 pin, so VCCH should always be + * routed internally to VIN7 with an internal divider. + * Curiously, there still is a configuration bit to control + * this, which means it can be set incorrectly. And even + * more curiously, many boards out there are improperly + * 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. + */ + if (sio_data->type == it8720 && !(reg & (1 << 1))) { + reg |= (1 << 1); + superio_outb(IT87_SIO_PINX2_REG, reg); + pr_notice("it87: Routing internal VCCH to in7\n"); + } if (reg & (1 << 0)) pr_info("it87: in3 is VCC (+5V)\n"); if (reg & (1 << 1)) |