asus-laptop: Show HRWS in infos and fix output format

Show HRWS in /sys/platform/devices/asus-laptop/infos.
HRWS is a bitfield used to get information about Hardware
available in the laptop.
Also change sprintf format from 0x%04x to %#x.

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 12 insertions, 2 deletions

diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c
index db657bbeec90..23449508d86b 100644
--- a/drivers/platform/x86/asus-laptop.c
+++ b/drivers/platform/x86/asus-laptop.c
@@ -516,7 +516,17 @@ static ssize_t show_infos(struct device *dev,
          */
         rv = acpi_evaluate_integer(hotk->handle, "SFUN", NULL, &temp);
         if (!ACPI_FAILURE(rv))
-                len += sprintf(page + len, "SFUN value         : 0x%04x\n",
+                len += sprintf(page + len, "SFUN value         : %#x\n",
+                               (uint) temp);
+        /*
+         * The HWRS method return informations about the hardware.
+         * 0x80 bit is for WLAN, 0x100 for Bluetooth.
+         * The significance of others is yet to be found.
+         * If we don't find the method, we assume the device are present.
+         */
+        rv = acpi_evaluate_integer(hotk->handle, "HRWS", NULL, &temp);
+        if (!ACPI_FAILURE(rv))
+                len += sprintf(page + len, "HRWS value         : %#x\n",
                                (uint) temp);
         /*
          * Another value for userspace: the ASYM method returns 0x02 for
@@ -527,7 +537,7 @@ static ssize_t show_infos(struct device *dev,
          */
         rv = acpi_evaluate_integer(hotk->handle, "ASYM", NULL, &temp);
         if (!ACPI_FAILURE(rv))
-                len += sprintf(page + len, "ASYM value         : 0x%04x\n",
+                len += sprintf(page + len, "ASYM value         : %#x\n",
                                (uint) temp);
         if (asus_info) {
                 snprintf(buf, 16, "%d", asus_info->length);