Felix Held would like Marshall Dawson to review this change.

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soc/amd/picasso: Notify PSP system is going to sleep state

Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Change-Id: Ic72bd5f5710181ca4f282feba5f7531b098c907a
---
M src/soc/amd/picasso/smihandler.c
1 file changed, 28 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/98/40298/1

diff --git a/src/soc/amd/picasso/smihandler.c b/src/soc/amd/picasso/smihandler.c
index e4d1c86..f29fffb 100644
--- a/src/soc/amd/picasso/smihandler.c
+++ b/src/soc/amd/picasso/smihandler.c
@@ -145,6 +145,30 @@
 	smi_write32(SMI_REG_SMISTS4, smi_read32(SMI_REG_SMISTS4));
 }
 
+static void send_sx_info(uint8_t slptyp)
+{
+	uint8_t sx;
+
+	switch (slptyp) {
+	case ACPI_S0:
+		sx = 0;
+		break;
+	case ACPI_S3:
+		sx = 3;
+		break;
+	case ACPI_S4:
+		sx = 4;
+		break;
+	case ACPI_S5:
+		sx = 5;
+		break;
+	default:
+		return;
+	}
+
+	psp_notify_sx_info(sx);
+}
+
 static void sb_slp_typ_handler(void)
 {
 	uint32_t pci_ctrl, reg32;
@@ -220,12 +244,16 @@
 						reg32);
 		} /* if (CONFIG(ELOG_GSMI)) */
 
+		send_sx_info(slp_typ);
+
 		/*
 		 * An IO cycle is required to trigger the STPCLK/STPGNT
 		 * handshake when the Pm1 write is reissued.
 		 */
 		outw(pm1cnt | SLP_EN, pm_read16(PM1_CNT_BLK));
 		hlt();
+	} else {
+		send_sx_info(slp_typ);
 	}
 }
 

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