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[ACPI] revert Embedded Controller to polling-mode by default (ala 2.6.12) 

Burst mode isn't ready for prime time,
but can be enabled for test via "ec_burst=1"

Signed-off-by: Luming Yu <luming.yu@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
hifive-unleashed-5.1
Luming Yu 2005-08-03 17:38:04 -04:00 committed by Len Brown
parent ecc21ebe60
commit 7b15f5e7bb
1 changed files with 19 additions and 5 deletions
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24
drivers/acpi/ec.c
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@ -76,13 +76,14 @@ static int acpi_ec_remove (struct acpi_device *device, int type);
static int acpi_ec_start (struct acpi_device *device);
static int acpi_ec_stop (struct acpi_device *device, int type);
static int acpi_ec_burst_add ( struct acpi_device *device);
static int acpi_ec_polling_add ( struct acpi_device *device);
static struct acpi_driver acpi_ec_driver = {
.name = ACPI_EC_DRIVER_NAME,
.class = ACPI_EC_CLASS,
.ids = ACPI_EC_HID,
.ops = {
.add = acpi_ec_burst_add,
.add = acpi_ec_polling_add,
.remove = acpi_ec_remove,
.start = acpi_ec_start,
.stop = acpi_ec_stop,
@ -164,7 +165,7 @@ static union acpi_ec *ec_ecdt;
/* External interfaces use first EC only, so remember */
static struct acpi_device *first_ec;
static int acpi_ec_polling_mode;
static int acpi_ec_polling_mode = EC_POLLING;
/* --------------------------------------------------------------------------
Transaction Management
@ -1710,11 +1711,24 @@ static int __init acpi_fake_ecdt_setup(char *str)
acpi_fake_ecdt_enabled = 1;
return 0;
}
__setup("acpi_fake_ecdt", acpi_fake_ecdt_setup);
static int __init acpi_ec_set_polling_mode(char *str)
{
acpi_ec_polling_mode = EC_POLLING;
acpi_ec_driver.ops.add = acpi_ec_polling_add;
int burst;
if (!get_option(&str, &burst))
return 0;
if (burst) {
acpi_ec_polling_mode = EC_BURST;
acpi_ec_driver.ops.add = acpi_ec_burst_add;
} else {
acpi_ec_polling_mode = EC_POLLING;
acpi_ec_driver.ops.add = acpi_ec_polling_add;
}
printk(KERN_INFO PREFIX "EC %s mode.\n",
burst ? "burst": "polling");
return 0;
}
__setup("ec_polling", acpi_ec_set_polling_mode);
__setup("ec_burst=", acpi_ec_set_polling_mode);