Use ESPI VW signals wherever possible

src/board/system76/addw3/gpio.c

@@ -26,8 +26,6 @@ struct Gpio __code PM_PWROK =       GPIO(C, 6);
 struct Gpio __code PWR_BTN_N =      GPIO(D, 5);
 struct Gpio __code PWR_SW_N =       GPIO(B, 3);
 struct Gpio __code SLP_SUS_N =      GPIO(H, 7);
-struct Gpio __code SUSB_N_PCH =     GPIO(H, 6);
-struct Gpio __code SUSC_N_PCH =     GPIO(H, 1);
 struct Gpio __code VA_EC_EN =       GPIO(J, 4);
 struct Gpio __code WLAN_EN =        GPIO(G, 1);
 struct Gpio __code WLAN_PWR_EN =    GPIO(D, 3);

src/board/system76/addw3/include/board/gpio.h

@@ -33,8 +33,6 @@ extern struct Gpio __code PWR_BTN_N;
 extern struct Gpio __code PWR_SW_N;
 extern struct Gpio __code SLP_SUS_N;
 #define HAVE_SUS_PWR_ACK 0
-extern struct Gpio __code SUSB_N_PCH;
-extern struct Gpio __code SUSC_N_PCH;
 extern struct Gpio __code VA_EC_EN;
 extern struct Gpio __code WLAN_EN;
 extern struct Gpio __code WLAN_PWR_EN;

src/board/system76/common/peci.c

@@ -14,10 +14,6 @@
 #define USE_PECI_OVER_ESPI 0
 #endif
 
-#ifndef USE_S0IX
-#define USE_S0IX 0
-#endif
-
 // Fan speed is the lowest requested over HEATUP seconds
 #ifndef BOARD_HEATUP
 #define BOARD_HEATUP 4
@@ -246,13 +242,14 @@ int16_t peci_wr_pkg_config(uint8_t index, uint16_t param, uint32_t data) {
 uint8_t peci_get_fan_duty(void) {
     uint8_t duty;
 
-#if USE_S0IX
-    // Use PECI if platform is not in CS
-    peci_on = gpio_get(&SLP_S0_N);
-#else // USE_S0IX
+#if CONFIG_BUS_ESPI
+    // Use PECI if CPU is not in C10 sleep state
+    // HOST_C10 virtual wire is high when CPU is in C10 sleep state
+    peci_on = !vw_get(&VW_HOST_C10);
+#else // CONFIG_BUS_ESPI
     // Use PECI if in S0 state
     peci_on = power_state == POWER_STATE_S0;
-#endif // USE_S0IX
+#endif // CONFIG_BUS_ESPI
 
     if (peci_on) {
         int16_t peci_offset = 0;

src/board/system76/common/power.c

@@ -22,10 +22,6 @@
 #include <board/espi.h>
 #endif
 
-#ifndef USE_S0IX
-#define USE_S0IX 0
-#endif
-
 #define GPIO_SET_DEBUG(G, V) \
     { \
         DEBUG("%s = %s\n", #G, V ? "true" : "false"); \
@@ -64,14 +60,6 @@
 #define HAVE_SLP_SUS_N 1
 #endif
 
-#ifndef HAVE_SUSB_N_PCH
-#define HAVE_SUSB_N_PCH 1
-#endif
-
-#ifndef HAVE_SUSC_N_PCH
-#define HAVE_SUSC_N_PCH 1
-#endif
-
 #ifndef HAVE_SUSWARN_N
 #define HAVE_SUSWARN_N 1
 #endif
@@ -133,36 +121,41 @@ enum PowerState power_state = POWER_STATE_OFF;
 enum PowerState calculate_power_state(void) {
     //TODO: Deep Sx states using SLP_SUS#
 
-#if HAVE_SUSB_N_PCH
-    if (gpio_get(&SUSB_N_PCH)) {
-        // S3, S4, and S5 planes powered
-        return POWER_STATE_S0;
-    }
-#else
-    // Use eSPI virtual wire if there is no dedicated GPIO
+#if CONFIG_BUS_ESPI
+    // Use eSPI virtual wires if available
+
     if (vw_get(&VW_SLP_S3_N)) {
         // S3, S4, and S5 planes powered
         return POWER_STATE_S0;
     }
-#endif
 
-#if HAVE_SUSC_N_PCH
-    if (gpio_get(&SUSC_N_PCH)) {
-        // S4 and S5 planes powered
-        return POWER_STATE_S3;
-    }
-#else
-    // Use eSPI virtual wire if there is no dedicated GPIO
     if (vw_get(&VW_SLP_S4_N)) {
         // S4 and S5 planes powered
         return POWER_STATE_S3;
     }
-#endif
+
+    if (vw_get(&VW_SLP_S5_N)) {
+        // S5 plane powered
+        return POWER_STATE_S5;
+    }
+#else // CONFIG_BUS_ESPI
+    // Use dedicated GPIOs if not using ESPI
+
+    if (gpio_get(&SUSB_N_PCH)) {
+        // S3, S4, and S5 planes powered
+        return POWER_STATE_S0;
+    }
+
+    if (gpio_get(&SUSC_N_PCH)) {
+        // S4 and S5 planes powered
+        return POWER_STATE_S3;
+    }
 
     if (gpio_get(&EC_RSMRST_N)) {
         // S5 plane powered
         return POWER_STATE_S5;
     }
+#endif // CONFIG_BUS_ESPI
 
     return POWER_STATE_OFF;
 }
@@ -346,11 +339,12 @@ static bool power_peci_limit(bool ac) {
 void power_set_limit(void) {
     static bool last_power_limit_ac = true;
     // We don't use power_state because the latency needs to be low
-#if USE_S0IX
-    if (gpio_get(&SLP_S0_N)) {
-#else
+#if CONFIG_BUS_ESPI
+    // HOST_C10 virtual wire is high when CPU is in C10 sleep state
+    if (!vw_get(&VW_HOST_C10)) {
+#else // CONFIG_BUS_ESPI
     if (gpio_get(&BUF_PLT_RST_N)) {
-#endif
+#endif // CONFIG_BUS_ESPI
         bool ac = !gpio_get(&ACIN_N);
         if (last_power_limit_ac != ac) {
             if (power_peci_limit(ac)) {
@@ -361,7 +355,7 @@ void power_set_limit(void) {
         last_power_limit_ac = true;
     }
 }
-#else
+#else // HAVE_DGPU
 void power_set_limit(void) {}
 #endif // HAVE_DGPU
 
@@ -582,8 +576,9 @@ void power_event(void) {
     static uint32_t last_time = 0;
     uint32_t time = time_get();
     if (power_state == POWER_STATE_S0) {
-#if USE_S0IX
-        if (!gpio_get(&SLP_S0_N)) {
+#if CONFIG_BUS_ESPI
+        // HOST_C10 virtual wire is high when CPU is in C10 sleep state
+        if (vw_get(&VW_HOST_C10)) {
             // Modern suspend, flashing green light
             if ((time - last_time) >= 1000) {
                 gpio_set(&LED_PWR, !gpio_get(&LED_PWR));

src/board/system76/gaze18/gpio.c

@@ -27,8 +27,6 @@ struct Gpio __code PCH_PWROK_EC =   GPIO(F, 3);
 struct Gpio __code PWR_BTN_N =      GPIO(D, 5);
 struct Gpio __code PWR_SW_N =       GPIO(B, 3);
 struct Gpio __code SLP_SUS_N =      GPIO(J, 4);
-struct Gpio __code SUSB_N_PCH =     GPIO(H, 6);
-struct Gpio __code SUSC_N_PCH =     GPIO(H, 1);
 struct Gpio __code VA_EC_EN =       GPIO(H, 7);
 struct Gpio __code WLAN_EN =        GPIO(G, 1);
 struct Gpio __code WLAN_PWR_EN =    GPIO(A, 3);

src/board/system76/gaze18/include/board/gpio.h

@@ -34,8 +34,6 @@ extern struct Gpio __code PWR_BTN_N;
 extern struct Gpio __code PWR_SW_N;
 extern struct Gpio __code SLP_SUS_N;
 #define HAVE_SUS_PWR_ACK 0
-extern struct Gpio __code SUSB_N_PCH;
-extern struct Gpio __code SUSC_N_PCH;
 extern struct Gpio __code VA_EC_EN;
 extern struct Gpio __code WLAN_EN;
 extern struct Gpio __code WLAN_PWR_EN;

src/board/system76/oryp11/board.mk

@@ -34,7 +34,7 @@ CFLAGS+=\
 	-DCHARGER_CHARGE_VOLTAGE=17600 \
 	-DCHARGER_INPUT_CURRENT=11500
 
-# Use PECI over ESPI	
+# Use PECI over ESPI
 CFLAGS+=-DUSE_PECI_OVER_ESPI=1
 
 # Set CPU power limits in watts

src/board/system76/oryp11/include/board/gpio.h

@@ -34,8 +34,6 @@ extern struct Gpio __code PWR_BTN_N;
 extern struct Gpio __code PWR_SW_N;
 extern struct Gpio __code SLP_SUS_N;
 #define HAVE_SUS_PWR_ACK 0
-#define HAVE_SUSB_N_PCH 0
-#define HAVE_SUSC_N_PCH 0
 extern struct Gpio __code VA_EC_EN;
 #define HAVE_WLAN_EN 0
 extern struct Gpio __code WLAN_PWR_EN;

src/board/system76/serw13/gpio.c

@@ -26,8 +26,6 @@ struct Gpio __code PCH_PWROK_EC =   GPIO(C, 6);
 struct Gpio __code PWR_BTN_N =      GPIO(D, 5);
 struct Gpio __code PWR_SW_N =       GPIO(B, 3);
 struct Gpio __code SLP_SUS_N =      GPIO(H, 7);
-struct Gpio __code SUSB_N_PCH =     GPIO(H, 6);
-struct Gpio __code SUSC_N_PCH =     GPIO(H, 1);
 struct Gpio __code SWI_N =          GPIO(B, 5);
 struct Gpio __code USB_PWR_EN_N =   GPIO(E, 3);
 struct Gpio __code VA_EC_EN =       GPIO(J, 4);

src/board/system76/serw13/include/board/gpio.h

@@ -35,8 +35,6 @@ extern struct Gpio __code PWR_SW_N;
 extern struct Gpio __code SLP_SUS_N;
 #define HAVE_SUSWARN_N 0
 #define HAVE_SUS_PWR_ACK 0
-extern struct Gpio __code SUSB_N_PCH;
-extern struct Gpio __code SUSC_N_PCH;
 extern struct Gpio __code SWI_N;
 extern struct Gpio __code USB_PWR_EN_N;
 extern struct Gpio __code VA_EC_EN;

src/ec/ite/espi.c

@@ -34,6 +34,8 @@ struct VirtualWire __code VW_SUS_ACK_N = VIRTUAL_WIRE(40, 0);
 // Index 41 - AP to EC (platform specific)
 struct VirtualWire __code VW_SUS_WARN_N = VIRTUAL_WIRE(41, 0);
 struct VirtualWire __code VW_SUS_PWRDN_ACK = VIRTUAL_WIRE(41, 1);
+// Index 47 - AP to EC (platform specific)
+struct VirtualWire __code VW_HOST_C10 = VIRTUAL_WIRE(47, 0);
 
 enum VirtualWireState vw_get(struct VirtualWire *vw) __critical {
     uint8_t index = *vw->index;

src/ec/ite/include/ec/espi.h

@@ -59,6 +59,8 @@ extern struct VirtualWire __code VW_SUS_ACK_N;
 // Index 41 - AP to EC (platform specific)
 extern struct VirtualWire __code VW_SUS_WARN_N;
 extern struct VirtualWire __code VW_SUS_PWRDN_ACK;
+// Index 47 - AP to EC (platform specific)
+extern struct VirtualWire __code VW_HOST_C10;
 
 // General capabilities and configurations
 volatile uint8_t __xdata __at(0x3107) ESGCAC0;
@@ -154,6 +156,7 @@ volatile uint8_t __xdata __at(0x3207) VWIDX7;
 volatile uint8_t __xdata __at(0x3240) VWIDX40;
 volatile uint8_t __xdata __at(0x3241) VWIDX41;
 volatile uint8_t __xdata __at(0x3242) VWIDX42;
+volatile uint8_t __xdata __at(0x3247) VWIDX47;
 
 // Virtual wire control
 volatile uint8_t __xdata __at(0x3290) VWCTRL0;