[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>
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@ -76,13 +76,14 @@ static int acpi_ec_remove (struct acpi_device *device, int type);
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static int acpi_ec_start (struct acpi_device *device);
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static int acpi_ec_stop (struct acpi_device *device, int type);
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static int acpi_ec_burst_add ( struct acpi_device *device);
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static int acpi_ec_polling_add ( struct acpi_device *device);
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static struct acpi_driver acpi_ec_driver = {
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.name = ACPI_EC_DRIVER_NAME,
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.class = ACPI_EC_CLASS,
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.ids = ACPI_EC_HID,
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.ops = {
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.add = acpi_ec_burst_add,
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.add = acpi_ec_polling_add,
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.remove = acpi_ec_remove,
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.start = acpi_ec_start,
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.stop = acpi_ec_stop,
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@ -164,7 +165,7 @@ static union acpi_ec *ec_ecdt;
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/* External interfaces use first EC only, so remember */
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static struct acpi_device *first_ec;
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static int acpi_ec_polling_mode;
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static int acpi_ec_polling_mode = EC_POLLING;
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/* --------------------------------------------------------------------------
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Transaction Management
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@ -1710,11 +1711,24 @@ static int __init acpi_fake_ecdt_setup(char *str)
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acpi_fake_ecdt_enabled = 1;
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return 0;
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}
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__setup("acpi_fake_ecdt", acpi_fake_ecdt_setup);
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static int __init acpi_ec_set_polling_mode(char *str)
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{
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acpi_ec_polling_mode = EC_POLLING;
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acpi_ec_driver.ops.add = acpi_ec_polling_add;
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int burst;
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if (!get_option(&str, &burst))
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return 0;
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if (burst) {
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acpi_ec_polling_mode = EC_BURST;
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acpi_ec_driver.ops.add = acpi_ec_burst_add;
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} else {
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acpi_ec_polling_mode = EC_POLLING;
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acpi_ec_driver.ops.add = acpi_ec_polling_add;
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}
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printk(KERN_INFO PREFIX "EC %s mode.\n",
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burst ? "burst": "polling");
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return 0;
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}
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__setup("ec_polling", acpi_ec_set_polling_mode);
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__setup("ec_burst=", acpi_ec_set_polling_mode);
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