Add CC. Thomas
æ æï2010-10-31 æ 00:36 +0800ïLee, Chun-Yi æåï
> 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>
> ---
> drivers/platform/x86/acer-wmi.c | 50 ++++++++++++++++++++++++++++++++------
> 1 files changed, 42 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
> index 9656464..0247a70 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_THREEG (1<<6) /* 3G */
> +#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 +156,15 @@ struct wmid3_gds_return_value { /* Get Device Status return value*/
> u32 reserved;
> } __attribute__((packed));
>
> +#define ACER_DMI_DEV_TYPE_AA 170
> +
> +struct hotkey_function_type_aa {
> + u8 type;
> + u8 length;
> + u16 handle;
> + u16 commun_func_bitmap;
> +} __attribute__((packed));
> +
> /*
> * Interface capability flags
> */
> @@ -184,6 +196,7 @@ static int brightness = -1;
> static int threeg = -1;
> static int force_series;
> static bool ec_raw_mode;
> +static struct hotkey_function_type_aa *type_aa;
>
> module_param(mailled, int, 0444);
> module_param(brightness, int, 0444);
> @@ -824,6 +837,18 @@ 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)
> +{
> + /* We are looking for OEM-specific Type Aah */
> + if (header->type != ACER_DMI_DEV_TYPE_AA)
> + return;
> +
> + type_aa = (struct hotkey_function_type_aa *) header;
> +
> + printk(ACER_INFO "Function biti map for Communication Button: 0x%x\n",
> + type_aa->commun_func_bitmap);
> +}
> +
> static acpi_status WMID_set_capabilities(void)
> {
> struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
> @@ -844,16 +869,24 @@ 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 (type_aa) {
> + 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;
> + } else {
> + 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 +965,8 @@ 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 (!type_aa)
> + set_u32(threeg, ACER_CAP_THREEG);
> set_u32(brightness, ACER_CAP_BRIGHTNESS);
> }
>
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