[coreboot-gerrit] [S] Change in coreboot[main]: superio/ite: Add function to disable PME# output

[Joel Linn (Code Review)]

Joel Linn has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/81589?usp=email )

Change subject: superio/ite: Add function to disable PME# output
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superio/ite: Add function to disable PME# output

A function to disable the PME# output was added. This is required to
set up the SuperIO on the "HP Pro 3500 Series" mb.

Change-Id: I94f023ba6eb24b5fb1c5e0b30eb65738f50a87eb
Signed-off-by: Joel Linn 
---
M src/superio/ite/common/early_serial.c
M src/superio/ite/common/ite.h
2 files changed, 17 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/89/81589/1

diff --git a/src/superio/ite/common/early_serial.c b/src/superio/ite/common/early_serial.c
index b8a6ba5..ec218a6 100644
--- a/src/superio/ite/common/early_serial.c
+++ b/src/superio/ite/common/early_serial.c
@@ -15,6 +15,7 @@
 #define ITE_CONFIG_REG_WATCHDOG		0x72 /* watchdog config */
 #define ITE_CONFIG_REG_WDT_TIMEOUT_LSB	0x73 /* watchdog timeout (LSB) */
 #define ITE_CONFIG_REG_WDT_TIMEOUT_MSB	0x74 /* watchdog timeout (MSB) */
+#define ITE_CONFIG_REG_APC_PME_CTL1	0xf2 /* APC_PME Control 1 */
 #define ITE_CONFIG_REG_APC_PME_CTL2	0xf4 /* APC_PME Control 2 */

/* Helper procedure */
@@ -143,6 +144,21 @@
 }

/*
+ * Disable PME# Output
+ * pass EC_DEV
+ */
+void ite_disable_pme_out(pnp_devfn_t dev)
+{
+	u8 tmp;
+	pnp_enter_conf_state(dev);
+	pnp_set_logical_device(dev);
+	tmp = pnp_read_config(dev, ITE_CONFIG_REG_APC_PME_CTL1);
+	tmp |= 0x40;
+	pnp_write_config(dev, ITE_CONFIG_REG_APC_PME_CTL1, tmp);
+	pnp_exit_conf_state(dev);
+}
+
+/*
  * Set AC resume to be up to the Southbridge
  * pass EC_DEV
  */
diff --git a/src/superio/ite/common/ite.h b/src/superio/ite/common/ite.h
index 1a147be..8a1ab58 100644
--- a/src/superio/ite/common/ite.h
+++ b/src/superio/ite/common/ite.h
@@ -18,6 +18,7 @@
 void ite_set_3vsbsw(pnp_devfn_t dev, bool enable);
 void ite_delay_pwrgd3(pnp_devfn_t dev);
 void ite_kill_watchdog(pnp_devfn_t dev);
+void ite_disable_pme_out(pnp_devfn_t dev);
 void ite_ac_resume_southbridge(pnp_devfn_t dev);

/* Alias for backwards compatibility */