Check the Acer OEM-specific Type AA to detect the WiFi/Bluetooth/3G
devices available or not, and set the devices capability flag.
Signed-off-by: Lee, Chun-Yi <jlee@xxxxxxxxxx>
Reviewed-by: Jean Delvare <jdelvare@xxxxxxx>
Reviewed-by: Dmitry Torokhov <dtor@xxxxxxx>
Acked-by: Thomas Renninger <trenn@xxxxxxx>
Acked-by: Jiri Benc <jbenc@xxxxxxx>
Cc: Carlos Corbacho <carlos@xxxxxxxxxxxxxxxxxxx>
Cc: Corentin Chary <corentincj@xxxxxxxxxx>
---
drivers/platform/x86/acer-wmi.c | 49 +++++++++++++++++++++++++++++++++-----
1 files changed, 42 insertions(+), 7 deletions(-)
diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
index 6ac4656..dc23140 100644
--- a/drivers/platform/x86/acer-wmi.c
+++ b/drivers/platform/x86/acer-wmi.c
@@ -39,6 +39,7 @@
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/input/sparse-keymap.h>
+#include <linux/dmi.h>
#include <acpi/acpi_drivers.h>
@@ -138,7 +139,9 @@ struct lm_return_value {
/*
* GUID3 Get Device Status device flags
*/
+#define ACER_WMID3_GDS_WIRELESS (1<<0) /* WiFi */
#define ACER_WMID3_GDS_THREEG (1<<6) /* 3G */
+#define ACER_WMID3_GDS_BLUETOOTH (1<<11) /* BT */
struct wmid3_gds_input_param { /* Get Device Status input parameter */
u8 function_num; /* Function Number */
@@ -153,6 +156,13 @@ struct wmid3_gds_return_value { /* Get Device Status return value*/
u32 reserved;
} __attribute__((packed));
+struct hotkey_function_type_aa {
+ u8 type;
+ u8 length;
+ u16 handle;
+ u16 commun_func_bitmap;
+} __attribute__((packed));
+
/*
* Interface capability flags
*/
@@ -184,6 +194,7 @@ static int brightness = -1;
static int threeg = -1;
static int force_series;
static bool ec_raw_mode;
+static bool has_type_aa;
module_param(mailled, int, 0444);
module_param(brightness, int, 0444);
@@ -824,6 +835,28 @@ static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
return WMI_execute_u32(method_id, (u32)value, NULL);
}
+static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
+{
+ struct hotkey_function_type_aa *type_aa;
+
+ /* We are looking for OEM-specific Type AAh */
+ if (header->type != 0xAA)
+ return;
+
+ has_type_aa = true;
+ type_aa = (struct hotkey_function_type_aa *) header;
+
+ printk(ACER_INFO "Function bitmap for Communication Button: 0x%x\n",
+ type_aa->commun_func_bitmap);
+
+ if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
+ interface->capability |= ACER_CAP_WIRELESS;
+ if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
+ interface->capability |= ACER_CAP_THREEG;
+ if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
+ interface->capability |= ACER_CAP_BLUETOOTH;
+}
+
static acpi_status WMID_set_capabilities(void)
{
struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
@@ -844,16 +877,17 @@ static acpi_status WMID_set_capabilities(void)
return AE_ERROR;
}
- /* Not sure on the meaning of the relevant bits yet to detect these */
- interface->capability |= ACER_CAP_WIRELESS;
- interface->capability |= ACER_CAP_THREEG;
+ dmi_walk(type_aa_dmi_decode, NULL);
+ if (!has_type_aa) {
+ interface->capability |= ACER_CAP_WIRELESS;
+ interface->capability |= ACER_CAP_THREEG;
+ if (devices & 0x10)
+ interface->capability |= ACER_CAP_BLUETOOTH;
+ }
/* WMID always provides brightness methods */
interface->capability |= ACER_CAP_BRIGHTNESS;
- if (devices & 0x10)
- interface->capability |= ACER_CAP_BLUETOOTH;
-
if (!(devices & 0x20))
max_brightness = 0x9;
@@ -932,7 +966,8 @@ static void __init acer_commandline_init(void)
* capability isn't available on the given interface
*/
set_u32(mailled, ACER_CAP_MAILLED);
- set_u32(threeg, ACER_CAP_THREEG);
+ if (!has_type_aa)
+ set_u32(threeg, ACER_CAP_THREEG);
set_u32(brightness, ACER_CAP_BRIGHTNESS);
}
--
1.6.0.2
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