diff options
| -rw-r--r-- | drivers/hwmon/it87.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c index 4ebce2c661d7..ee48e238e46f 100644 --- a/drivers/hwmon/it87.c +++ b/drivers/hwmon/it87.c @@ -3316,6 +3316,27 @@ static int it87_dmi_cb(const struct dmi_system_id *dmi_entry) } /* + * On various Gigabyte AM4 boards (AB350, AX370), the second Super-IO chip + * (IT8792E) needs to be in configuration mode before accessing the first + * due to a bug in IT8792E which otherwise results in LPC bus access errors. + * This needs to be done before accessing the first Super-IO chip since + * the second chip may have been accessed prior to loading this driver. + * + * The problem is also reported to affect IT8795E, which is used on X299 boards + * and has the same chip ID as IT8792E (0x8733). It also appears to affect + * systems with IT8790E, which is used on some Z97X-Gaming boards as well as + * Z87X-OC. + * DMI entries for those systems will be added as they become available and + * as the problem is confirmed to affect those boards. + */ +static int it87_sio_force(const struct dmi_system_id *dmi_entry) +{ + __superio_enter(REG_4E); + + return it87_dmi_cb(dmi_entry); +}; + +/* * On the Shuttle SN68PT, FAN_CTL2 is apparently not * connected to a fan, but to something else. One user * has reported instant system power-off when changing @@ -3337,7 +3358,34 @@ static struct it87_dmi_data nvidia_fn68pt = { .driver_data = data, \ } +#define IT87_DMI_MATCH_GBT(name, cb, data) \ + IT87_DMI_MATCH_VND("Gigabyte Technology Co., Ltd.", name, cb, data) + static const struct dmi_system_id it87_dmi_table[] __initconst = { + IT87_DMI_MATCH_GBT("AB350", it87_sio_force, NULL), + /* ? + IT8792E/IT8795E */ + IT87_DMI_MATCH_GBT("AX370", it87_sio_force, NULL), + /* ? + IT8792E/IT8795E */ + IT87_DMI_MATCH_GBT("Z97X-Gaming G1", it87_sio_force, NULL), + /* ? + IT8790E */ + IT87_DMI_MATCH_GBT("TRX40 AORUS XTREME", it87_sio_force, NULL), + /* IT8688E + IT8792E/IT8795E */ + IT87_DMI_MATCH_GBT("Z390 AORUS ULTRA-CF", it87_sio_force, NULL), + /* IT8688E + IT8792E/IT8795E */ + IT87_DMI_MATCH_GBT("B550 AORUS PRO AC", it87_sio_force, NULL), + /* IT8688E + IT8792E/IT8795E */ + IT87_DMI_MATCH_GBT("X570 AORUS MASTER", it87_sio_force, NULL), + /* IT8688E + IT8792E/IT8795E */ + IT87_DMI_MATCH_GBT("X570 AORUS PRO", it87_sio_force, NULL), + /* IT8688E + IT8792E/IT8795E */ + IT87_DMI_MATCH_GBT("X570 AORUS PRO WIFI", it87_sio_force, NULL), + /* IT8688E + IT8792E/IT8795E */ + IT87_DMI_MATCH_GBT("X570S AERO G", it87_sio_force, NULL), + /* IT8689E + IT87952E */ + IT87_DMI_MATCH_GBT("Z690 AORUS PRO DDR4", it87_sio_force, NULL), + /* IT8689E + IT87952E */ + IT87_DMI_MATCH_GBT("Z690 AORUS PRO", it87_sio_force, NULL), + /* IT8689E + IT87952E */ IT87_DMI_MATCH_VND("nVIDIA", "FN68PT", it87_dmi_cb, &nvidia_fn68pt), { } |