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sio/winbond/w83627dhg: Add ACPI function to control suspend LED

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Change-Id: Ie2062672233141b6f34625e59cbb50238be0b5fa
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/16726
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>
This commit is contained in:
Nico Huber 2015-04-14 18:31:02 +02:00 committed by Martin Roth
parent 2fc06c8203
commit bbda950e13
1 changed files with 24 additions and 0 deletions
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24
src/superio/winbond/w83627dhg/acpi/superio.asl
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@ -97,6 +97,9 @@ Device(SUPERIO_DEV) {
Offset (0x74),
PNP_DMA0, 8, /* DMA */
Offset (0xf3),
SULM, 8, /* Suspend LED Mode Register */
}
Method (_CRS)
@ -139,6 +142,27 @@ Device(SUPERIO_DEV) {
EXIT_CONFIG_MODE ()
}
/* Suspend LED: Write given three-bit value into appropriate register.
From the datasheet:
000 - drive pin constantly high
001 - drive 0.5Hz pulses
010 - drive pin constantly low
011 - drive 2Hz pulses
100 - drive 1Hz pulses
101 - drive 4Hz pulses
110 - drive 0.25Hz pulses
111 - drive 0.25Hz pulses
(all pulses with 50% duty cycle) */
#define SUPERIO_SUSL_LDN 9
Method (SUSL, 1, Serialized) {
ENTER_CONFIG_MODE (SUPERIO_SUSL_LDN)
Store (SULM, Local0)
And (Local0, 0x1f, Local0)
Or (Local0, ShiftLeft (Arg0, 5), Local0)
Store (Local0, SULM)
EXIT_CONFIG_MODE ()
}
#ifdef W83627DHG_SHOW_UARTA
#undef SUPERIO_UART_LDN
#undef SUPERIO_UART_DDN