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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-08-04 10:26:03 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-08-04 10:26:03 +1000 |
| commit | 412a4ac5e9cf7fdeb6af562c25547a9b9da7674f (patch) | |
| tree | a8ce13cbc9c47c99799e5e3e3ad26ba78274ee73 /drivers/hwmon/it87.c | |
| parent | e8e5c2155b0035b6e04f29be67f6444bc914005b (diff) | |
| parent | 0c2daaafcdec726e89cbccca61d576de8429c537 (diff) | |
| download | olio-linux-3.10-412a4ac5e9cf7fdeb6af562c25547a9b9da7674f.tar.xz olio-linux-3.10-412a4ac5e9cf7fdeb6af562c25547a9b9da7674f.zip | |
Merge commit 'gcl/next' into next
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)) |