Attention is currently required from: Martin Roth. Matt DeVillier has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/52390 )
Change subject: ec/purism/librem-ec: Add support for Purism Librem EC ......................................................................
ec/purism/librem-ec: Add support for Purism Librem EC
Initial commit is a clone of ec/system76/ec with string changes; Purism-specific functionality will be added in subsequent commits.
Change-Id: I8c51724e6dbfe1bc09496537f9e031643f95c755 Signed-off-by: Matt DeVillier matt.devillier@puri.sm --- A src/ec/purism/librem-ec/Kconfig A src/ec/purism/librem-ec/Makefile.inc A src/ec/purism/librem-ec/acpi/ac.asl A src/ec/purism/librem-ec/acpi/battery.asl A src/ec/purism/librem-ec/acpi/battery_thresholds.asl A src/ec/purism/librem-ec/acpi/buttons.asl A src/ec/purism/librem-ec/acpi/ec.asl A src/ec/purism/librem-ec/acpi/ec_ram.asl A src/ec/purism/librem-ec/acpi/hid.asl A src/ec/purism/librem-ec/acpi/librem-ec.asl A src/ec/purism/librem-ec/acpi/lid.asl A src/ec/purism/librem-ec/librem_ec.c 12 files changed, 870 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/90/52390/1
diff --git a/src/ec/purism/librem-ec/Kconfig b/src/ec/purism/librem-ec/Kconfig new file mode 100644 index 0000000..e63b585 --- /dev/null +++ b/src/ec/purism/librem-ec/Kconfig @@ -0,0 +1,19 @@ +config EC_LIBREM_EC + bool + help + Librem EC + +config EC_LIBREM_EC_BAT_THRESHOLDS + depends on EC_LIBREM_EC + bool + default n + +config EC_LIBREM_EC_COLOR_KEYBOARD + depends on EC_LIBREM_EC + bool + default n + +config EC_LIBREM_EC_OLED + depends on EC_LIBREM_EC + bool + default n diff --git a/src/ec/purism/librem-ec/Makefile.inc b/src/ec/purism/librem-ec/Makefile.inc new file mode 100644 index 0000000..c3b66196 --- /dev/null +++ b/src/ec/purism/librem-ec/Makefile.inc @@ -0,0 +1,6 @@ +ifeq ($(CONFIG_EC_LIBREM_EC),y) + +all-y += librem_ec.c +smm-$(CONFIG_DEBUG_SMI) += librem_ec.c + +endif diff --git a/src/ec/purism/librem-ec/acpi/ac.asl b/src/ec/purism/librem-ec/acpi/ac.asl new file mode 100644 index 0000000..7326676 --- /dev/null +++ b/src/ec/purism/librem-ec/acpi/ac.asl @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +Device (AC) +{ + Name (_HID, "ACPI0003" /* Power Source Device */) // _HID: Hardware ID + Name (_PCL, Package (0x01) // _PCL: Power Consumer List + { + _SB + }) + + Name (ACFG, One) + + Method (_PSR, 0, NotSerialized) // _PSR: Power Source + { + Return (ACFG) + } + + Method (_STA, 0, NotSerialized) // _STA: Status + { + Return (0x0F) + } +} diff --git a/src/ec/purism/librem-ec/acpi/battery.asl b/src/ec/purism/librem-ec/acpi/battery.asl new file mode 100644 index 0000000..50aaf9e --- /dev/null +++ b/src/ec/purism/librem-ec/acpi/battery.asl @@ -0,0 +1,170 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +Device (BAT0) +{ + Name (_HID, EisaId ("PNP0C0A") /* Control Method Battery */) // _HID: Hardware ID + Name (_UID, Zero) // _UID: Unique ID + Name (_PCL, Package (0x01) // _PCL: Power Consumer List + { + _SB + }) + Name (BFCC, Zero) + Method (_STA, 0, NotSerialized) // _STA: Status + { + If (^^PCI0.LPCB.EC0.ECOK) + { + If (^^PCI0.LPCB.EC0.BAT0) + { + Return (0x1F) + } + Else + { + Return (0x0F) + } + } + Else + { + Return (0x0F) + } + } + + Name (PBIF, Package (0x0D) + { + One, // 0 - Power Unit + 0xFFFFFFFF, // 1 - Design Capacity + 0xFFFFFFFF, // 2 - Last Full Charge Capacity + One, // 3 - Battery Technology + 0xFFFFFFFF, // 4 - Design Voltage + Zero, // 5 - Design Capacity of Warning + Zero, // 6 - Design Capacity of Low + 0x40, // 7 - Battery Capacity Granularity 1 + 0x40, // 8 - Battery Capacity Granularity 2 + " ", // 9 - Model Number + " ", // 10 - Serial Number + " ", // 11 - Battery Type + " " // 12 - OEM Information + }) + Method (IVBI, 0, NotSerialized) + { + PBIF [1] = 0xFFFFFFFF + PBIF [2] = 0xFFFFFFFF + PBIF [4] = 0xFFFFFFFF + PBIF [9] = " " + PBIF [10] = " " + PBIF [11] = " " + PBIF [12] = " " + BFCC = Zero + } + + Method (UPBI, 0, NotSerialized) + { + If (^^PCI0.LPCB.EC0.BAT0) + { + Local0 = (^^PCI0.LPCB.EC0.BDC0 & 0xFFFF) + PBIF [1] = Local0 + Local0 = (^^PCI0.LPCB.EC0.BFC0 & 0xFFFF) + PBIF [2] = Local0 + BFCC = Local0 + Local0 = (^^PCI0.LPCB.EC0.BDV0 & 0xFFFF) + PBIF [4] = Local0 + Local0 = (^^PCI0.LPCB.EC0.BCW0 & 0xFFFF) + PBIF [5] = Local0 + Local0 = (^^PCI0.LPCB.EC0.BCL0 & 0xFFFF) + PBIF [6] = Local0 + PBIF [9] = "BAT" + PBIF [10] = "0001" + PBIF [11] = "LION" + PBIF [12] = "Notebook" + } + Else + { + IVBI () + } + } + + Method (_BIF, 0, NotSerialized) // _BIF: Battery Information + { + If (^^PCI0.LPCB.EC0.ECOK) + { + UPBI () + } + Else + { + IVBI () + } + + Return (PBIF) /* _SB_.BAT0.PBIF */ + } + + Name (PBST, Package (0x04) + { + Zero, // 0 - Battery state + 0xFFFFFFFF, // 1 - Battery present rate + 0xFFFFFFFF, // 2 - Battery remaining capacity + 0xFFFFFFFF // 3 - Battery present voltage + }) + Method (IVBS, 0, NotSerialized) + { + PBST [0] = Zero + PBST [1] = 0xFFFFFFFF + PBST [2] = 0xFFFFFFFF + PBST [3] = 0xFFFFFFFF + } + + Method (UPBS, 0, NotSerialized) + { + If (^^PCI0.LPCB.EC0.BAT0) + { + Local0 = Zero + Local1 = Zero + If (^^AC.ACFG) + { + If (((^^PCI0.LPCB.EC0.BST0 & 0x02) == 0x02)) + { + Local0 |= 0x02 + Local1 = (^^PCI0.LPCB.EC0.BPR0 & 0xFFFF) + } + } + Else + { + Local0 |= One + Local1 = (^^PCI0.LPCB.EC0.BPR0 & 0xFFFF) + } + + Local7 = (Local1 & 0x8000) + If ((Local7 == 0x8000)) + { + Local1 ^= 0xFFFF + } + + Local2 = (^^PCI0.LPCB.EC0.BRC0 & 0xFFFF) + Local3 = (^^PCI0.LPCB.EC0.BPV0 & 0xFFFF) + PBST [0] = Local0 + PBST [1] = Local1 + PBST [2] = Local2 + PBST [3] = Local3 + If ((BFCC != ^^PCI0.LPCB.EC0.BFC0)) + { + Notify (BAT0, 0x81) // Information Change + } + } + Else + { + IVBS () + } + } + + Method (_BST, 0, NotSerialized) // _BST: Battery Status + { + If (^^PCI0.LPCB.EC0.ECOK) + { + UPBS () + } + Else + { + IVBS () + } + + Return (PBST) /* _SB_.BAT0.PBST */ + } +} diff --git a/src/ec/purism/librem-ec/acpi/battery_thresholds.asl b/src/ec/purism/librem-ec/acpi/battery_thresholds.asl new file mode 100644 index 0000000..3bb1330 --- /dev/null +++ b/src/ec/purism/librem-ec/acpi/battery_thresholds.asl @@ -0,0 +1,46 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +Field (ERAM, ByteAcc, Lock, Preserve) +{ + Offset (0xBC), + BTL0, 8, /* BAT0 charging start threshold */ + BTH0, 8, /* BAT0 charging end threshold */ +} + +/* + * Get battery charging threshold + * + * Arg0: 0: Start threshold + * 1: Stop threshold + */ +Method (GBCT, 1, NotSerialized) +{ + If (Arg0 == 0) { + Return (BTL0) + } + + If (Arg0 == 1) { + Return (BTH0) + } + + Return (0xFF) +} + +/* + * Set battery charging threshold + * + * Arg0: 0: Start threshold + * 1: Stop threshold + * Arg1: Percentage + */ +Method (SBCT, 2, NotSerialized) +{ + If (Arg1 <= 100) { + If (Arg0 == 0) { + BTL0 = Arg1 + } + If (Arg0 == 1) { + BTH0 = Arg1 + } + } +} diff --git a/src/ec/purism/librem-ec/acpi/buttons.asl b/src/ec/purism/librem-ec/acpi/buttons.asl new file mode 100644 index 0000000..ae85c67 --- /dev/null +++ b/src/ec/purism/librem-ec/acpi/buttons.asl @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +Device (PWRB) +{ + Name (_HID, EisaId ("PNP0C0C")) + Name (_PRW, Package () { EC_GPE_SWI, 3 }) +} + +Device (SLPB) +{ + Name (_HID, EisaId ("PNP0C0E")) + Name (_PRW, Package () { EC_GPE_SWI, 3 }) +} diff --git a/src/ec/purism/librem-ec/acpi/ec.asl b/src/ec/purism/librem-ec/acpi/ec.asl new file mode 100644 index 0000000..8d18d1e --- /dev/null +++ b/src/ec/purism/librem-ec/acpi/ec.asl @@ -0,0 +1,244 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +Scope (_SB) { + #include "ac.asl" + #include "battery.asl" + #include "buttons.asl" + #include "hid.asl" + #include "lid.asl" + #include "librem-ec.asl" +} + +Device (_SB.PCI0.LPCB.EC0) +{ + Name (_HID, EisaId ("PNP0C09") /* Embedded Controller Device */) // _HID: Hardware ID + Name (_GPE, EC_GPE_SCI) // _GPE: General Purpose Events + Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings + { + IO (Decode16, + 0x0062, // Range Minimum + 0x0062, // Range Maximum + 0x00, // Alignment + 0x01, // Length + ) + IO (Decode16, + 0x0066, // Range Minimum + 0x0066, // Range Maximum + 0x00, // Alignment + 0x01, // Length + ) + }) + + #include "ec_ram.asl" + + Name (ECOK, Zero) + Method (_REG, 2, Serialized) // _REG: Region Availability + { + Debug = Concatenate("EC: _REG", Concatenate(ToHexString(Arg0), Concatenate(" ", ToHexString(Arg1)))) + If ((Arg0 == 0x03) && (Arg1 == One)) { + // Enable hardware touchpad lock, airplane mode, and keyboard backlight keys + ECOS = 1 + + // Enable software display brightness keys + WINF = 1 + + // Set current AC state + ^^^^AC.ACFG = ADP + // Update battery information and status + ^^^^BAT0.UPBI() + ^^^^BAT0.UPBS() + + // Notify of changes + Notify(^^^^AC, Zero) + Notify(^^^^BAT0, Zero) + + PNOT () + + // EC is now available + ECOK = Arg1 + + // Reset System76 Device + ^^^^S76D.RSET() + } + } + + Name (S3OS, Zero) + Method (PTS, 1, Serialized) { + Debug = Concatenate("EC: PTS: ", ToHexString(Arg0)) + If (ECOK) { + // Save ECOS during sleep + S3OS = ECOS + + // Clear wake cause + WFNO = Zero + } + } + + Method (WAK, 1, Serialized) { + Debug = Concatenate("EC: WAK: ", ToHexString(Arg0)) + If (ECOK) { + // Restore ECOS after sleep + ECOS = S3OS + + // Set current AC state + ^^^^AC.ACFG = ADP + + // Update battery information and status + ^^^^BAT0.UPBI() + ^^^^BAT0.UPBS() + + // Notify of changes + Notify(^^^^AC, Zero) + Notify(^^^^BAT0, Zero) + + // Reset System76 Device + ^^^^S76D.RSET() + } + } + + Method (_Q0A, 0, NotSerialized) // Touchpad Toggle + { + Debug = "EC: Touchpad Toggle" + } + + Method (_Q0B, 0, NotSerialized) // Screen Toggle + { + Debug = "EC: Screen Toggle" +#if CONFIG(EC_SYSTEM76_EC_OLED) + Notify (^^^^S76D, 0x85) +#endif // CONFIG(EC_SYSTEM76_EC_OLED) + } + + Method (_Q0C, 0, NotSerialized) // Mute + { + Debug = "EC: Mute" + } + + Method (_Q0D, 0, NotSerialized) // Keyboard Backlight + { + Debug = "EC: Keyboard Backlight" + } + + Method (_Q0E, 0, NotSerialized) // Volume Down + { + Debug = "EC: Volume Down" + } + + Method (_Q0F, 0, NotSerialized) // Volume Up + { + Debug = "EC: Volume Up" + } + + Method (_Q10, 0, NotSerialized) // Switch Video Mode + { + Debug = "EC: Switch Video Mode" + } + + Method (_Q11, 0, NotSerialized) // Brightness Down + { + Debug = "EC: Brightness Down" + if (^^^^HIDD.HRDY) { + ^^^^HIDD.HPEM (20) + } + } + + Method (_Q12, 0, NotSerialized) // Brightness Up + { + Debug = "EC: Brightness Up" + if (^^^^HIDD.HRDY) { + ^^^^HIDD.HPEM (19) + } + } + + Method (_Q13, 0, NotSerialized) // Camera Toggle + { + Debug = "EC: Camera Toggle" + } + + Method (_Q14, 0, NotSerialized) // Airplane Mode + { + Debug = "EC: Airplane Mode" + if (^^^^HIDD.HRDY) { + ^^^^HIDD.HPEM (8) + } + // TODO: hardware airplane mode + } + + Method (_Q15, 0, NotSerialized) // Suspend Button + { + Debug = "EC: Suspend Button" + Notify (SLPB, 0x80) + } + + Method (_Q16, 0, NotSerialized) // AC Detect + { + Debug = "EC: AC Detect" + ^^^^AC.ACFG = ADP + Notify (AC, 0x80) // Status Change + If (BAT0) + { + Notify (^^^^BAT0, 0x81) // Information Change + Notify (^^^^BAT0, 0x80) // Status Change + } + } + + Method (_Q17, 0, NotSerialized) // BAT0 Update + { + Debug = "EC: BAT0 Update (17)" + Notify (^^^^BAT0, 0x81) // Information Change + } + + Method (_Q19, 0, NotSerialized) // BAT0 Update + { + Debug = "EC: BAT0 Update (19)" + Notify (^^^^BAT0, 0x81) // Information Change + } + + Method (_Q1B, 0, NotSerialized) // Lid Close + { + Debug = "EC: Lid Close" + Notify (LID0, 0x80) + } + + Method (_Q1C, 0, NotSerialized) // Thermal Trip + { + Debug = "EC: Thermal Trip" + /* TODO + Notify (_TZ.TZ0, 0x81) // Thermal Trip Point Change + Notify (_TZ.TZ0, 0x80) // Thermal Status Change + */ + } + + Method (_Q1D, 0, NotSerialized) // Power Button + { + Debug = "EC: Power Button" + Notify (PWRB, 0x80) + } + + Method (_Q50, 0, NotSerialized) // Other Events + { + Local0 = OEM4 + If (Local0 == 0x8A) { + Debug = "EC: White Keyboard Backlight" + Notify (^^^^S76D, 0x80) + } ElseIf (Local0 == 0x9F) { + Debug = "EC: Color Keyboard Toggle" + Notify (^^^^S76D, 0x81) + } ElseIf (Local0 == 0x81) { + Debug = "EC: Color Keyboard Down" + Notify (^^^^S76D, 0x82) + } ElseIf (Local0 == 0x82) { + Debug = "EC: Color Keyboard Up" + Notify (^^^^S76D, 0x83) + } ElseIf (Local0 == 0x80) { + Debug = "EC: Color Keyboard Color Change" + Notify (^^^^S76D, 0x84) + } Else { + Debug = Concatenate("EC: Other: ", ToHexString(Local0)) + } + } + + #if CONFIG(EC_SYSTEM76_EC_BAT_THRESHOLDS) + #include "battery_thresholds.asl" + #endif +} diff --git a/src/ec/purism/librem-ec/acpi/ec_ram.asl b/src/ec/purism/librem-ec/acpi/ec_ram.asl new file mode 100644 index 0000000..6ef5454 --- /dev/null +++ b/src/ec/purism/librem-ec/acpi/ec_ram.asl @@ -0,0 +1,54 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +OperationRegion (ERAM, EmbeddedControl, Zero, 0xFF) +Field (ERAM, ByteAcc, Lock, Preserve) +{ + Offset (0x03), + LSTE, 1, // Lid is open + , 1, + LWKE, 1, // Lid wake + , 5, + Offset (0x07), + TMP1, 8, // CPU temperature + Offset (0x10), + ADP, 1, // AC adapter connected + , 1, + BAT0, 1, // Battery connected + , 5, + WFNO, 8, // Wake cause (not implemented) + Offset (0x16), + BDC0, 32, // Battery design capacity + BFC0, 32, // Battery full capacity + Offset (0x22), + BDV0, 32, // Battery design voltage + BST0, 32, // Battery status + BPR0, 32, // Battery current + BRC0, 32, // Battery remaining capacity + BPV0, 32, // Battery voltage + Offset (0x3A), + BCW0, 32, + BCL0, 32, + Offset (0x68), + ECOS, 8, // Detected OS, 0 = no ACPI, 1 = ACPI but no driver, 2 = ACPI with driver + Offset (0xC8), + OEM1, 8, + OEM2, 8, + OEM3, 16, + OEM4, 8, // Extra SCI data + Offset (0xCD), + TMP2, 8, // GPU temperature + DUT1, 8, // Fan 1 duty + DUT2, 8, // Fan 2 duty + RPM1, 16, // Fan 1 RPM + RPM2, 16, // Fan 2 RPM + Offset (0xD9), + AIRP, 8, // Airplane mode LED + WINF, 8, // Enable ACPI brightness controls + Offset (0xF8), + FCMD, 8, + FDAT, 8, + FBUF, 8, + FBF1, 8, + FBF2, 8, + FBF3, 8, +} diff --git a/src/ec/purism/librem-ec/acpi/hid.asl b/src/ec/purism/librem-ec/acpi/hid.asl new file mode 100644 index 0000000..6610c2e --- /dev/null +++ b/src/ec/purism/librem-ec/acpi/hid.asl @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +Device (HIDD) +{ + Name (_HID, "INT33D5") + Name (HBSY, Zero) + Name (HIDX, Zero) + Name (HRDY, Zero) + + Method (HDEM, 0, Serialized) + { + HBSY = Zero + Return (HIDX) + } + + Method (HDMM, 0, Serialized) + { + Return (Zero) + } + + Method (HDSM, 1, Serialized) + { + HRDY = Arg0 + } + + Method (HPEM, 1, Serialized) + { + HBSY = One + HIDX = Arg0 + + Notify (HIDD, 0xC0) + Local0 = Zero + While ((Local0 < 0xFA) && HBSY) + { + Sleep (0x04) + Local0++ + } + + If (HBSY == One) + { + HBSY = Zero + HIDX = Zero + Return (One) + } + Else + { + Return (Zero) + } + } +} diff --git a/src/ec/purism/librem-ec/acpi/librem-ec.asl b/src/ec/purism/librem-ec/acpi/librem-ec.asl new file mode 100644 index 0000000..62a93ba --- /dev/null +++ b/src/ec/purism/librem-ec/acpi/librem-ec.asl @@ -0,0 +1,162 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +// Notifications: +// 0x80 - hardware backlight toggle +// 0x81 - backlight toggle +// 0x82 - backlight down +// 0x83 - backlight up +// 0x84 - backlight color change +// 0x85 - OLED screen toggle +Device (S76D) { + Name (_HID, "17761776") + Name (_UID, 0) + + Method (RSET, 0, Serialized) { + Debug = "S76D: RSET" + SAPL(0) + SKBL(0) +#if CONFIG(EC_SYSTEM76_EC_COLOR_KEYBOARD) + SKBC(0xFFFFFF) +#endif // CONFIG(EC_SYSTEM76_EC_COLOR_KEYBOARD) + } + + Method (INIT, 0, Serialized) { + Debug = "S76D: INIT" + RSET() + If (^^PCI0.LPCB.EC0.ECOK) { + // Set flags to use software control + ^^PCI0.LPCB.EC0.ECOS = 2 + Return (0) + } Else { + Return (1) + } + } + + Method (FINI, 0, Serialized) { + Debug = "S76D: FINI" + RSET() + If (^^PCI0.LPCB.EC0.ECOK) { + // Set flags to use hardware control + ^^PCI0.LPCB.EC0.ECOS = 1 + Return (0) + } Else { + Return (1) + } + } + + // Get Airplane LED + Method (GAPL, 0, Serialized) { + If (^^PCI0.LPCB.EC0.ECOK) { + If (^^PCI0.LPCB.EC0.AIRP & 0x40) { + Return (1) + } + } + Return (0) + } + + // Set Airplane LED + Method (SAPL, 1, Serialized) { + If (^^PCI0.LPCB.EC0.ECOK) { + If (Arg0) { + ^^PCI0.LPCB.EC0.AIRP |= 0x40 + } Else { + ^^PCI0.LPCB.EC0.AIRP &= 0xBF + } + } + } + +#if CONFIG(EC_SYSTEM76_EC_COLOR_KEYBOARD) + // Set KB LED Brightness + Method (SKBL, 1, Serialized) { + If (^^PCI0.LPCB.EC0.ECOK) { + ^^PCI0.LPCB.EC0.FDAT = 6 + ^^PCI0.LPCB.EC0.FBUF = Arg0 + ^^PCI0.LPCB.EC0.FBF1 = 0 + ^^PCI0.LPCB.EC0.FBF2 = Arg0 + ^^PCI0.LPCB.EC0.FCMD = 0xCA + } + } + + // Set Keyboard Color + Method (SKBC, 1, Serialized) { + If (^^PCI0.LPCB.EC0.ECOK) { + ^^PCI0.LPCB.EC0.FDAT = 0x3 + ^^PCI0.LPCB.EC0.FBUF = (Arg0 & 0xFF) + ^^PCI0.LPCB.EC0.FBF1 = ((Arg0 >> 16) & 0xFF) + ^^PCI0.LPCB.EC0.FBF2 = ((Arg0 >> 8) & 0xFF) + ^^PCI0.LPCB.EC0.FCMD = 0xCA + Return (Arg0) + } Else { + Return (0) + } + } +#else // CONFIG(EC_SYSTEM76_EC_COLOR_KEYBOARD) + // Get KB LED + Method (GKBL, 0, Serialized) { + Local0 = 0 + If (^^PCI0.LPCB.EC0.ECOK) { + ^^PCI0.LPCB.EC0.FDAT = One + ^^PCI0.LPCB.EC0.FCMD = 0xCA + Local0 = ^^PCI0.LPCB.EC0.FBUF + ^^PCI0.LPCB.EC0.FCMD = Zero + } + Return (Local0) + } + + // Set KB Led + Method (SKBL, 1, Serialized) { + If (^^PCI0.LPCB.EC0.ECOK) { + ^^PCI0.LPCB.EC0.FDAT = Zero + ^^PCI0.LPCB.EC0.FBUF = Arg0 + ^^PCI0.LPCB.EC0.FCMD = 0xCA + } + } +#endif // CONFIG(EC_SYSTEM76_EC_COLOR_KEYBOARD) + + // Fan names + Method (NFAN, 0, Serialized) { + Return (Package() { + "CPU fan", + }) + } + + // Get fan duty cycle and RPM as a single value + Method (GFAN, 1, Serialized) { + Local0 = 0 + Local1 = 0 + If (^^PCI0.LPCB.EC0.ECOK) { + If (Arg0 == 0) { + Local0 = ^^PCI0.LPCB.EC0.DUT1 + Local1 = ^^PCI0.LPCB.EC0.RPM1 + } ElseIf (Arg0 == 1) { + Local0 = ^^PCI0.LPCB.EC0.DUT2 + Local1 = ^^PCI0.LPCB.EC0.RPM2 + } + } + If (Local1 != 0) { + // 60 * (EC frequency / 120) / 2 + Local1 = 2156250 / Local1 + } + Return ((Local1 << 8) | Local0) + } + + // Temperature names + Method (NTMP, 0, Serialized) { + Return (Package() { + "CPU temp", + }) + } + + // Get temperature + Method (GTMP, 1, Serialized) { + Local0 = 0; + If (^^PCI0.LPCB.EC0.ECOK) { + If (Arg0 == 0) { + Local0 = ^^PCI0.LPCB.EC0.TMP1 + } ElseIf (Arg0 == 1) { + Local0 = ^^PCI0.LPCB.EC0.TMP2 + } + } + Return (Local0) + } +} diff --git a/src/ec/purism/librem-ec/acpi/lid.asl b/src/ec/purism/librem-ec/acpi/lid.asl new file mode 100644 index 0000000..45e646a --- /dev/null +++ b/src/ec/purism/librem-ec/acpi/lid.asl @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +Device (LID0) +{ + Name (_HID, EisaId ("PNP0C0D")) + Name (_PRW, Package () { EC_GPE_SWI, 3 }) + + Method (_LID, 0, NotSerialized) { + DEBUG = "LID: _LID" + If (^^PCI0.LPCB.EC0.ECOK) { + Return (^^PCI0.LPCB.EC0.LSTE) + } Else { + Return (One) + } + } + + Method (_PSW, 1, NotSerialized) { + DEBUG = Concatenate("LID: _PSW: ", ToHexString(Arg0)) + If (^^PCI0.LPCB.EC0.ECOK) { + ^^PCI0.LPCB.EC0.LWKE = Arg0 + } + } +} diff --git a/src/ec/purism/librem-ec/librem_ec.c b/src/ec/purism/librem-ec/librem_ec.c new file mode 100644 index 0000000..6615f83 --- /dev/null +++ b/src/ec/purism/librem-ec/librem_ec.c @@ -0,0 +1,61 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <arch/io.h> +#include <console/system76_ec.h> +#include <timer.h> + +// This is the command region for Librem EC firmware. It must be +// enabled for LPC in the mainboard. +#define LIBREM_EC_BASE 0x0E00 +#define LIBREM_EC_SIZE 256 + +#define REG_CMD 0 +#define REG_RESULT 1 + +// When command register is 0, command is complete +#define CMD_FINISHED 0 + +// Print command. Registers are unique for each command +#define CMD_PRINT 4 +#define CMD_PRINT_REG_FLAGS 2 +#define CMD_PRINT_REG_LEN 3 +#define CMD_PRINT_REG_DATA 4 + +static inline uint8_t system76_ec_read(uint8_t addr) +{ + return inb(LIBREM_EC_BASE + (uint16_t)addr); +} + +static inline void system76_ec_write(uint8_t addr, uint8_t data) +{ + outb(data, LIBREM_EC_BASE + (uint16_t)addr); +} + +void system76_ec_init(void) +{ + // Clear entire command region + for (int i = 0; i < LIBREM_EC_SIZE; i++) + system76_ec_write((uint8_t)i, 0); +} + +void system76_ec_flush(void) +{ + system76_ec_write(REG_CMD, CMD_PRINT); + + // Wait for command completion, for up to 10 milliseconds, with a + // test period of 1 microsecond + wait_us(10000, system76_ec_read(REG_CMD) == CMD_FINISHED); + + system76_ec_write(CMD_PRINT_REG_LEN, 0); +} + +void system76_ec_print(uint8_t byte) +{ + uint8_t len = system76_ec_read(CMD_PRINT_REG_LEN); + system76_ec_write(CMD_PRINT_REG_DATA + len, byte); + system76_ec_write(CMD_PRINT_REG_LEN, len + 1); + + // If we hit the end of the buffer, or were given a newline, flush + if (byte == '\n' || len >= (LIBREM_EC_SIZE - CMD_PRINT_REG_DATA)) + system76_ec_flush(); +}