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authorPatrick Rudolph <siro@das-labor.org>2017-08-13 12:55:41 +0200
committerFelix Held <felix-coreboot@felixheld.de>2018-07-19 16:43:08 +0000
commit60eca531df7d13272d9d8b41c7992d18fad75a16 (patch)
treeeb95ec1e6df0cdf978dea2aa9a93b3440febf43d
parent94d79a338bb7f035257d3e3137c315eb1b9ea3ae (diff)
downloadcoreboot-60eca531df7d13272d9d8b41c7992d18fad75a16.tar.xz
ec/lenovo/h8/acpi: Add WWAN ACPI methods
Implement GWAN and SWAN for thinkpad_acpi kernel module. Both methods allow power control of the WWAN module. Change-Id: I5550c78e0d36884eca7a8d8ece19b64aaee44045 Signed-off-by: Patrick Rudolph <siro@das-labor.org> Reviewed-on: https://review.coreboot.org/20986 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
-rw-r--r--src/ec/lenovo/h8/acpi/thinkpad.asl38
-rw-r--r--src/ec/lenovo/h8/ssdt.c1
2 files changed, 39 insertions, 0 deletions
diff --git a/src/ec/lenovo/h8/acpi/thinkpad.asl b/src/ec/lenovo/h8/acpi/thinkpad.asl
index de2fe68192..d0e4234ed9 100644
--- a/src/ec/lenovo/h8/acpi/thinkpad.asl
+++ b/src/ec/lenovo/h8/acpi/thinkpad.asl
@@ -18,6 +18,7 @@ Device (HKEY)
{
/* Generated by ssdt.c */
External (\HBDC, IntObj)
+ External (\HWAN, IntObj)
Name (_HID, EisaId ("IBM0068"))
@@ -190,4 +191,41 @@ Device (HKEY)
/* FIXME: Store state at resume */
}
}
+
+ /*
+ * Returns the current state:
+ * Bit 0: WWAN HW present
+ * Bit 1: WWAN radio enabled
+ * Bit 2: WWAN state at resume
+ */
+ Method (GWAN, 0)
+ {
+ If (HWAN) {
+ Store(One, Local0)
+ If(\_SB.PCI0.LPCB.EC.WWEB)
+ {
+ Or(Local0, 2, Local0)
+ }
+ /* FIXME: Implement state at resume, for now Enabled */
+ Or(Local0, 4, Local0)
+ Return (Local0)
+ } Else {
+ Return (0)
+ }
+ }
+
+ /*
+ * Set the current state:
+ * Bit 1: WWAN radio enabled
+ * Bit 2: WWAN state at resume
+ */
+ Method (SWAN, 1)
+ {
+ If (HWAN) {
+ ShiftRight (And(Arg0, 2), 1, Local0)
+ Store (Local0, \_SB.PCI0.LPCB.EC.WWEB)
+
+ /* FIXME: Store state at resume */
+ }
+ }
}
diff --git a/src/ec/lenovo/h8/ssdt.c b/src/ec/lenovo/h8/ssdt.c
index 35570b0b72..84a52f5f63 100644
--- a/src/ec/lenovo/h8/ssdt.c
+++ b/src/ec/lenovo/h8/ssdt.c
@@ -46,6 +46,7 @@ void h8_ssdt_generator(struct device *dev)
/* Used by thinkpad_acpi */
acpigen_write_name_byte("HBDC", h8_has_bdc(dev) ? ONE_OP : ZERO_OP);
+ acpigen_write_name_byte("HWAN", h8_has_wwan(dev) ? ONE_OP : ZERO_OP);
acpigen_pop_len(); /* Scope HKEY */
}