diff options
| -rw-r--r-- | drivers/hwmon/sch56xx-common.c | 40 |
1 files changed, 38 insertions, 2 deletions
diff --git a/drivers/hwmon/sch56xx-common.c b/drivers/hwmon/sch56xx-common.c index 40cdadad35e5..0172aa16dc0c 100644 --- a/drivers/hwmon/sch56xx-common.c +++ b/drivers/hwmon/sch56xx-common.c @@ -7,8 +7,10 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/module.h> +#include <linux/mod_devicetable.h> #include <linux/init.h> #include <linux/platform_device.h> +#include <linux/dmi.h> #include <linux/err.h> #include <linux/io.h> #include <linux/acpi.h> @@ -19,7 +21,10 @@ #include <linux/slab.h> #include "sch56xx-common.h" -/* Insmod parameters */ +static bool ignore_dmi; +module_param(ignore_dmi, bool, 0); +MODULE_PARM_DESC(ignore_dmi, "Omit DMI check for supported devices (default=0)"); + static bool nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, bool, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" @@ -518,11 +523,42 @@ static int __init sch56xx_device_add(int address, const char *name) return PTR_ERR_OR_ZERO(sch56xx_pdev); } +/* For autoloading only */ +static const struct dmi_system_id sch56xx_dmi_table[] __initconst = { + { + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), + }, + }, + { } +}; +MODULE_DEVICE_TABLE(dmi, sch56xx_dmi_table); + static int __init sch56xx_init(void) { - int address; const char *name = NULL; + int address; + if (!ignore_dmi) { + if (!dmi_check_system(sch56xx_dmi_table)) + return -ENODEV; + + /* + * Some machines like the Esprimo P720 and Esprimo C700 have + * onboard devices named " Antiope"/" Theseus" instead of + * "Antiope"/"Theseus", so we need to check for both. + */ + if (!dmi_find_device(DMI_DEV_TYPE_OTHER, "Antiope", NULL) && + !dmi_find_device(DMI_DEV_TYPE_OTHER, " Antiope", NULL) && + !dmi_find_device(DMI_DEV_TYPE_OTHER, "Theseus", NULL) && + !dmi_find_device(DMI_DEV_TYPE_OTHER, " Theseus", NULL)) + return -ENODEV; + } + + /* + * Some devices like the Esprimo C700 have both onboard devices, + * so we still have to check manually + */ address = sch56xx_find(0x4e, &name); if (address < 0) address = sch56xx_find(0x2e, &name); |