samus: Fix codec interrupt and add GPIO defines

The codec interrupt needs to come from codec GPIO1, so use the
HOTWORD_DET GPIO as the codec IRQ and the DSP_INT as the wake.The

This means codec interrupt is GPIO46 which is PIRQO and should be
interrupt 30.

Also add GPIO defines for the GPIOs attached to the codec itself.
These are defined by index, and I used the same "jack detect" and
"mic present" indices that were used in baytrail.

The codec interrupt to the host is added at index 2 and the
hostword detect interrupt to the host is added at index 3.

These can be changed as we work through the implementation in the
kernel driver.

BUG=chrome-os-partner:29649
BRANCH=samus
TEST=build and boot on samus

Change-Id: Id9cb083ddf9df161be314da4148740ed9f4d0fe6
Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Original-Commit-Id: 3958efb28813c664a8a4219f78bdd0fcfe75c706
Original-Change-Id: I1c1ac1b6095fab7e3f4412555db4f9a9138e528b
Original-Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/220326
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/9216
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

2 files changed, 39 insertions, 22 deletions

diff --git a/src/mainboard/google/samus/acpi/mainboard.asl b/src/mainboard/google/samus/acpi/mainboard.asl
index 6a2cb97252..2bb34fd129 100644
--- a/src/mainboard/google/samus/acpi/mainboard.asl
+++ b/src/mainboard/google/samus/acpi/mainboard.asl
@@ -169,6 +169,8 @@ Scope (\_SB.PCI0.I2C0)
 		Name (_HID, "RT5677CE")
 		Name (_DDN, "RT5667 Codec")
 		Name (_UID, 1)
+		Name (WAKE, 45) /* DSP_INT (use as codec wake) */
+
 		Name (_CRS, ResourceTemplate()
 		{
 			I2cSerialBus (
@@ -178,38 +180,53 @@ Scope (\_SB.PCI0.I2C0)
 				AddressingMode7Bit,       // AddressingMode
 				"\\_SB.PCI0.I2C0",        // ResourceSource
 			)
-			Interrupt (ResourceConsumer, Edge, ActiveLow){ 30 }
-		})
-		Method (_STA)
-		{
-			If (LEqual (\S1EN, 1)) {
-				Return (0xF)
-			} Else {
-				Return (0x0)
-			}
-		}
-	}
 
-	Device (HOTW)
-	{
-		Name (_HID, "PNP0A05")
-		Name (_DDN, "Hotword Wake")
-		Name (_UID, 1)
-		Name (GPIO, 46) /* HOTWORD_DET_L_3V3 */
+			/* GPIO46 is PIRQO (use HOTWORD_DET as codec IRQ) */
+			Interrupt (ResourceConsumer, Edge, ActiveLow) { 30 }
+
+			/*
+			 * Codec GPIOs are 1-based in the schematic
+			 *
+			 * [0] = Jack Detect (INPUT)
+			 * [1] = Mic Present (INPUT)
+			 * [2] = Interrupt to the host (OUTPUT)
+			 * [3] = Interrupt to the host (OUTPUT)
+			 */
+
+			/* Index 0:  Jack Detect - PLUG_DET is GPIO5 */
+			GpioIo (Exclusive, PullUp, , , IoRestrictionInputOnly,
+				"\\_SB.PCI0.I2C0.CODC") { 4 }
+
+			/* Index 1:  Mic Present - MIC_PRESENT_L is GPIO6 */
+			GpioIo (Exclusive, PullUp, , , IoRestrictionInputOnly,
+				"\\_SB.PCI0.I2C0.CODC") { 5 }
+
+			/* Index 2:  Codec IRQ - HOTWORD_DET_L is GPIO1 */
+			GpioIo (Exclusive, PullUp, , , IoRestrictionOutputOnly,
+				"\\_SB.PCI0.I2C0.CODC") { 0 }
+
+			/* Index 3:  Codec Wake - DSP_INT is GPIO4 */
+			GpioIo (Exclusive, PullUp, , , IoRestrictionOutputOnly,
+				"\\_SB.PCI0.I2C0.CODC") { 3 }
+		})
 
-		Name (_PRW, Package() { GPIO, 3 })
+		Name (_PRW, Package() { WAKE, 3 })
 
 		Method (_DSW, 3, NotSerialized)
 		{
 			If (LEqual (Arg0, 1)) {
 				// Enable GPIO as wake source
-				\_SB.PCI0.LPCB.GPIO.GWAK (^GPIO)
+				\_SB.PCI0.LPCB.GPIO.GWAK (^WAKE)
 			}
 		}
 
 		Method (_STA)
 		{
-			Return (0xF)
+			If (LEqual (\S1EN, 1)) {
+				Return (0xF)
+			} Else {
+				Return (0x0)
+			}
 		}
 	}
 }
diff --git a/src/mainboard/google/samus/gpio.h b/src/mainboard/google/samus/gpio.h
index f293dee77e..393a14fe53 100644
--- a/src/mainboard/google/samus/gpio.h
+++ b/src/mainboard/google/samus/gpio.h
@@ -73,8 +73,8 @@ static const struct gpio_config mainboard_gpio_config[] = {
 	PCH_GPIO_UNUSED,        /* 42: WLAN_DISABLE_L */
 	PCH_GPIO_OUT_HIGH,      /* 43: PP1800_CODEC_EN */
 	PCH_GPIO_UNUSED,        /* 44: UNUSED */
-	PCH_GPIO_PIRQ,          /* 45: DSP_INT (PIRQN) */
-	PCH_GPIO_ACPI_SCI,      /* 46: HOTWORD_DET_L_3V3 (WAKE) */
+	PCH_GPIO_ACPI_SCI,      /* 45: DSP_INT - Codec Wake */
+	PCH_GPIO_PIRQ,          /* 46: HOTWORD_DET_L_3V3 (PIRQO) - Codec IRQ */
 	PCH_GPIO_OUT_LOW,       /* 47: SSD_RESET_L */
 	PCH_GPIO_UNUSED,        /* 48: UNUSED */
 	PCH_GPIO_UNUSED,        /* 49: UNUSED */