static int set_auto_brightness(int enable)
{
u8 wdata[2], rdata;
int result;
wdata[0] = 4;
result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, wdata, 1, &rdata, 1, 1);
if (result < 0)
return result;
wdata[0] = 0x84;
wdata[1] = (rdata & 0xF7) | (enable ? 8 : 0);
return ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, wdata, 2, NULL, 0, 1);
}
static int get_auto_brightness(void)
{
u8 wdata = 4, rdata;
int result;
result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, &wdata, 1, &rdata, 1, 1);
if (result < 0)
return result;
return !!(rdata & 8);
}
static int get_lcd_level(void)
{
u8 wdata = 0, rdata;
int result;
result = ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, &wdata, 1, &rdata, 1, 1);
if (result < 0)
return result;
return (int) rdata / 31;
}
static int set_lcd_level(int level)
{
u8 buf[2];
if (level < 0 || level >= MSI_LCD_LEVEL_MAX)
return -EINVAL;
buf[0] = 0x80;
buf[1] = (u8) (level*31);
return ec_transaction(MSI_EC_COMMAND_LCD_LEVEL, buf, sizeof(buf), NULL, 0, 1);
}
acpi_status
ec_space_handler (
u32 function,
ACPI_PHYSICAL_ADDRESS address,
u32 bit_width,
u32 *value,
void *handler_context,
void *region_context)
{
acpi_status status = AE_OK;
EC_CONTEXT *ec = NULL;
EC_REQUEST ec_request;
FUNCTION_TRACE("ec_space_handler");
if (address > 0xFF || bit_width != 8 || !value || !handler_context) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
ec = (EC_CONTEXT*)handler_context;
switch (function) {
case ACPI_READ_ADR_SPACE:
ec_request.command = EC_COMMAND_READ;
ec_request.address = address;
ec_request.data = 0;
break;
case ACPI_WRITE_ADR_SPACE:
ec_request.command = EC_COMMAND_WRITE;
ec_request.address = address;
ec_request.data = (u8)(*value);
break;
default:
ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "Received request with invalid function [%X].\n", function));
return_ACPI_STATUS(AE_BAD_PARAMETER);
break;
}
/*
* Perform the Transaction.
*/
status = ec_transaction(ec, &ec_request);
if (ACPI_SUCCESS(status)) {
(*value) = (u32)ec_request.data;
}
return_ACPI_STATUS(status);
}
static int get_wireless_state(int *wlan, int *bluetooth)
{
u8 wdata = 0, rdata;
int result;
result = ec_transaction(MSI_EC_COMMAND_WIRELESS, &wdata, 1, &rdata, 1, 1);
if (result < 0)
return -1;
if (wlan)
*wlan = !!(rdata & 8);
if (bluetooth)
*bluetooth = !!(rdata & 128);
return 0;
}
acpi_status
ec_request (
BM_REQUEST *request,
void *context)
{
acpi_status status = AE_OK;
EC_REQUEST *ec_request = NULL;
EC_CONTEXT *ec = NULL;
FUNCTION_TRACE("ec_request");
/*
* Must have a valid request structure and context.
*/
if (!request || !context)
return_ACPI_STATUS(AE_BAD_PARAMETER);
/*
* buffer must contain a valid EC_REQUEST structure.
*/
status = bm_cast_buffer(&(request->buffer), (void**)&ec_request,
sizeof(EC_REQUEST));
if (ACPI_FAILURE(status))
return_ACPI_STATUS(status);
/*
* context contains information specific to this EC.
*/
ec = (EC_CONTEXT*)context;
/*
* Perform the Transaction.
*/
status = ec_transaction(ec, ec_request);
return_ACPI_STATUS(status);
}
