diff options
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/asus-laptop.c | 55 |
1 files changed, 29 insertions, 26 deletions
diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c index 940ce3d63229..cee751e301a6 100644 --- a/drivers/platform/x86/asus-laptop.c +++ b/drivers/platform/x86/asus-laptop.c @@ -239,6 +239,9 @@ struct asus_laptop { struct asus_laptop_leds leds; + int wireless_status; + bool have_rsts; + acpi_handle handle; /* the handle of the hotk device */ char status; /* status of the hotk, for LEDs, ... */ u32 ledd_status; /* status of the LED display */ @@ -328,23 +331,6 @@ static int write_acpi_int(acpi_handle handle, const char *method, int val) return write_acpi_int_ret(handle, method, val, NULL); } -static int read_wireless_status(struct asus_laptop *asus, int mask) -{ - unsigned long long status; - acpi_status rv = AE_OK; - - if (!wireless_status_handle) - return (asus->status & mask) ? 1 : 0; - - rv = acpi_evaluate_integer(wireless_status_handle, NULL, NULL, &status); - if (ACPI_FAILURE(rv)) - pr_warning("Error reading Wireless status\n"); - else - return (status & mask) ? 1 : 0; - - return (asus->status & mask) ? 1 : 0; -} - static int read_gps_status(struct asus_laptop *asus) { unsigned long long status; @@ -362,10 +348,7 @@ static int read_gps_status(struct asus_laptop *asus) /* Generic LED functions */ static int read_status(struct asus_laptop *asus, int mask) { - /* There is a special method for both wireless devices */ - if (mask == BT_ON || mask == WL_ON) - return read_wireless_status(asus, mask); - else if (mask == GPS_ON) + if (mask == GPS_ON) return read_gps_status(asus); return (asus->status & mask) ? 1 : 0; @@ -812,6 +795,25 @@ static ssize_t store_ledd(struct device *dev, struct device_attribute *attr, } /* + * Wireless + */ +static int asus_wireless_status(struct asus_laptop *asus, int mask) +{ + unsigned long long status; + acpi_status rv = AE_OK; + + if (!asus->have_rsts) + return (asus->wireless_status & mask) ? 1 : 0; + + rv = acpi_evaluate_integer(wireless_status_handle, NULL, NULL, &status); + if (ACPI_FAILURE(rv)) { + pr_warning("Error reading Wireless status\n"); + return -EINVAL; + } + return !!(status & mask); +} + +/* * WLAN */ static ssize_t show_wlan(struct device *dev, @@ -819,7 +821,7 @@ static ssize_t show_wlan(struct device *dev, { struct asus_laptop *asus = dev_get_drvdata(dev); - return sprintf(buf, "%d\n", read_status(asus, WL_ON)); + return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_ON)); } static ssize_t store_wlan(struct device *dev, struct device_attribute *attr, @@ -838,7 +840,7 @@ static ssize_t show_bluetooth(struct device *dev, { struct asus_laptop *asus = dev_get_drvdata(dev); - return sprintf(buf, "%d\n", read_status(asus, BT_ON)); + return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_ON)); } static ssize_t store_bluetooth(struct device *dev, @@ -1371,7 +1373,8 @@ static int asus_laptop_get_info(struct asus_laptop *asus) if (hwrs_result & BT_HWRS) ASUS_HANDLE_INIT(bt_switch); - ASUS_HANDLE_INIT(wireless_status); + if (!ASUS_HANDLE_INIT(wireless_status)) + asus->have_rsts = true; ASUS_HANDLE_INIT(brightness_set); ASUS_HANDLE_INIT(brightness_get); @@ -1424,8 +1427,8 @@ static int __devinit asus_acpi_init(struct asus_laptop *asus) write_status(asus, wl_switch_handle, !!wireless_status, WL_ON); /* If the h/w switch is off, we need to check the real status */ - write_status(asus, NULL, read_status(asus, BT_ON), BT_ON); - write_status(asus, NULL, read_status(asus, WL_ON), WL_ON); + write_status(asus, NULL, asus_wireless_status(asus, BT_ON), BT_ON); + write_status(asus, NULL, asus_wireless_status(asus, WL_ON), WL_ON); /* LCD Backlight is on by default */ write_status(asus, NULL, 1, LCD_ON); |
