recipes-kernel/linux/5.15/1005-drivers-char-ipmi-sync-npcm-kcs-bmc.patch

From 898872f21ea35425378c19dd18197b54b00a13ac Mon Sep 17 00:00:00 2001
From: David Wang <davidwang@quantatw.com>
Date: Mon, 6 Nov 2023 10:49:25 +0800
Subject: [PATCH 06/16] drivers: char: ipmi: sync npcm kcs bmc

---
 drivers/char/ipmi/Kconfig           | 2 +-
 drivers/char/ipmi/kcs_bmc_npcm7xx.c | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/char/ipmi/Kconfig b/drivers/char/ipmi/Kconfig
index 1d3751fce154..ab8922e5e92c 100644
--- a/drivers/char/ipmi/Kconfig
+++ b/drivers/char/ipmi/Kconfig
@@ -110,7 +110,7 @@ config ASPEED_KCS_IPMI_BMC
 	  provides the access of KCS IO space for BMC side.
 
 config NPCM7XX_KCS_IPMI_BMC
-	depends on ARCH_NPCM7XX || COMPILE_TEST
+	depends on ARCH_NPCM || COMPILE_TEST
 	select IPMI_KCS_BMC
 	select REGMAP_MMIO
 	tristate "NPCM7xx KCS IPMI BMC driver"
diff --git a/drivers/char/ipmi/kcs_bmc_npcm7xx.c b/drivers/char/ipmi/kcs_bmc_npcm7xx.c
index 7961fec56476..56d1779e2ce7 100644
--- a/drivers/char/ipmi/kcs_bmc_npcm7xx.c
+++ b/drivers/char/ipmi/kcs_bmc_npcm7xx.c
@@ -169,6 +169,7 @@ static int npcm7xx_kcs_probe(struct platform_device *pdev)
 	struct npcm7xx_kcs_bmc *priv;
 	struct kcs_bmc_device *kcs_bmc;
 	u32 chan;
+	u32 val;
 	int rc;
 
 	rc = of_property_read_u32(dev->of_node, "kcs_chan", &chan);
@@ -198,6 +199,9 @@ static int npcm7xx_kcs_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, priv);
 
+	/* clear KCS status before enable the IRQ */
+	rc = regmap_read(priv->map, priv->reg->sts, &val);
+
 	rc = npcm7xx_kcs_config_irq(kcs_bmc, pdev);
 	if (rc)
 		return rc;
@@ -233,6 +237,7 @@ static int npcm7xx_kcs_remove(struct platform_device *pdev)
 
 static const struct of_device_id npcm_kcs_bmc_match[] = {
 	{ .compatible = "nuvoton,npcm750-kcs-bmc" },
+	{ .compatible = "nuvoton,npcm845-kcs-bmc" },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, npcm_kcs_bmc_match);
-- 
2.25.1