linux.git/drivers/acpi/ec.c, branch v3.12

Merge branch 'acpi-assorted'

2013-08-30T12:13:50+00:00

* acpi-assorted:
  ACPI / EC: Add ASUSTEK L4R to quirk list in order to validate ECDT
  ACPI / thermal: Add check of "_TZD" availability and evaluating result

ACPI / EC: Add ASUSTEK L4R to quirk list in order to validate ECDT

2013-08-28T19:50:13+00:00

The ECDT of ASUSTEK L4R doesn't provide correct command and data
I/O ports.  The DSDT provides the correct information instead.

For this reason, add this machine to quirk list for ECDT validation
and use the EC information from the DSDT.

[rjw: Changelog]
References: https://bugzilla.kernel.org/show_bug.cgi?id=60765
Reported-and-tested-by: Daniele Esposti 
Signed-off-by: Lan Tianyu 
Cc: All 
Signed-off-by: Rafael J. Wysocki

Merge branch 'acpi-assorted'

2013-08-26T23:29:04+00:00

* acpi-assorted:
  ACPI / osl: Kill macro INVALID_TABLE().
  earlycpio.c: Fix the confusing comment of find_cpio_data().
  ACPI / x86: Print Hot-Pluggable Field in SRAT.
  ACPI / thermal: Use THERMAL_TRIPS_NONE macro to replace number
  ACPI / thermal: Remove unused macros in the driver/acpi/thermal.c
  ACPI / thermal: Remove the unused lock of struct acpi_thermal
  ACPI / osl: Fix osi_setup_entries[] __initdata attribute location
  ACPI / numa: Fix __init attribute location in slit_valid()
  ACPI / dock: Fix __init attribute location in find_dock_and_bay()
  ACPI / Sleep: Fix incorrect placement of __initdata
  ACPI / processor: Fix incorrect placement of __initdata
  ACPI / EC: Fix incorrect placement of __initdata
  ACPI / scan: Drop unnecessary label from acpi_create_platform_device()
  ACPI: Move acpi_bus_get_device() from bus.c to scan.c
  ACPI / scan: Allow platform device creation without any IO resources
  ACPI: Cleanup sparse warning on acpi_os_initialize1()
  platform / thinkpad: Remove deprecated hotkey_report_mode parameter
  ACPI: Remove the old /proc/acpi/event interface

ACPI / EC: Fix incorrect placement of __initdata

2013-08-07T21:49:28+00:00

__initdata should be placed between the variable name and equal
sign for the variable to be placed in the intended section.

Signed-off-by: Sachin Kamat 
Signed-off-by: Rafael J. Wysocki

ACPI: introduce helper function acpi_has_method()

2013-07-14T23:33:10+00:00

Introduce helper function acpi_has_method() and use it in a number
of places to simplify code.

[rjw: Changelog]
Signed-off-by: Jiang Liu 
Signed-off-by: Rafael J. Wysocki

ACPI / EC: Add HP Folio 13 to ec_dmi_table in order to skip DSDT scan

2013-06-27T19:37:18+00:00

HP Folio 13's BIOS defines CMOS RTC Operation Region and the EC's
_REG method will access that region.  To allow the CMOS RTC region
handler to be installed before the EC _REG method is first invoked,
add ec_skip_dsdt_scan() as HP Folio 13's callback to ec_dmi_table.

References: https://bugzilla.kernel.org/show_bug.cgi?id=54621
Reported-and-tested-by: Stefan Nagy 
Signed-off-by: Lan Tianyu 
Cc: 3.9+ 
Signed-off-by: Rafael J. Wysocki

ACPI / EC: Restart transaction even when the IBF flag set

2013-05-12T12:03:15+00:00

The EC driver works abnormally with IBF flag always set.
IBF means "The host has written a byte of data to the command
or data port, but the embedded controller has not yet read it".
If IBF is set in the EC status and not cleared, this will cause
all subsequent EC requests to fail with a timeout error.

Change the EC driver so that it doesn't refuse to restart a
transaction if IBF is set in the status.  Also increase the
number of transaction restarts to 5, as it turns out that 2
is not sufficient in some cases.

This bug happens on several different machines (Asus V1S,
Dell Latitude E6530, Samsung R719, Acer Aspire 5930G,
Sony Vaio SR19VN and others).

[rjw: Changelog]
References: https://bugzilla.kernel.org/show_bug.cgi?id=14733
References: https://bugzilla.kernel.org/show_bug.cgi?id=15560
References: https://bugzilla.kernel.org/show_bug.cgi?id=15946
References: https://bugzilla.kernel.org/show_bug.cgi?id=42945
References: https://bugzilla.kernel.org/show_bug.cgi?id=48221
Signed-off-by: Lan Tianyu 
Cc: All 
Signed-off-by: Rafael J. Wysocki

ACPI: Remove useless type argument of driver .remove() operation

2013-01-25T23:37:24+00:00

The second argument of ACPI driver .remove() operation is only used
by the ACPI processor driver and the value passed to that driver
through it is always available from the given struct acpi_device
object's removal_type field.  For this reason, the second ACPI driver
.remove() argument is in fact useless, so drop it.

Signed-off-by: Rafael J. Wysocki 
Reviewed-by: Jiang Liu 
Acked-by: Toshi Kani 
Acked-by: Yinghai Lu

ACPI / EC: Don't count a SCI interrupt as a false one

2012-11-14T23:15:59+00:00

Currently when advance_transaction() is called in EC interrupt handler,
if there is nothing driver can do with the interrupt, it will be taken
as a false one.

But this is not always true, as there may be a SCI EC interrupt fired
during normal read/write operation, which should not be counted as a
false one. This patch fixes the problem.

Signed-off-by: Feng Tang 
Signed-off-by: Rafael J. Wysocki

ACPI / EC: Add more debug info and trivial code cleanup

2012-11-14T23:15:59+00:00

Add more debug info for EC transaction debugging, like the interrupt
status register value, the detail info of a EC transaction.

Signed-off-by: Feng Tang 
Signed-off-by: Rafael J. Wysocki