[PATCH v1 1/1] ipmi: NPCM7xx KCS BMC: enable interrupt to the host

[avifishman70 at gmail.com]

From: Avi Fishman <AviFishman70 at gmail.com>

Signed-off-by: Avi Fishman <AviFishman70 at gmail.com>
---
 drivers/char/ipmi/kcs_bmc_npcm7xx.c | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/drivers/char/ipmi/kcs_bmc_npcm7xx.c b/drivers/char/ipmi/kcs_bmc_npcm7xx.c
index 7bc898c5d372..5894561d061f 100644
--- a/drivers/char/ipmi/kcs_bmc_npcm7xx.c
+++ b/drivers/char/ipmi/kcs_bmc_npcm7xx.c
@@ -37,7 +37,14 @@
 #define KCS1CTL		0x18
 #define KCS2CTL		0x2A
 #define KCS3CTL		0x3C
-#define    KCS_CTL_IBFIE	BIT(0)
+
+#define KCS1IE		0x1C
+#define KCS2IE		0x2E
+#define KCS3IE		0x40
+
+#define KCS_CTL_IBFIE	BIT(0)
+#define KCS_IE_IRQE	BIT(0)
+#define KCS_IE_HIRQE	BIT(3)
 
 /*
  * 7.2.4 Core KCS Registers
@@ -48,12 +55,14 @@
  * dob: KCS Channel n Data Out Buffer Register (KCSnDO).
  * dib: KCS Channel n Data In Buffer Register (KCSnDI).
  * ctl: KCS Channel n Control Register (KCSnCTL).
+ * ie : KCS Channel n  Interrupt Enable Register (KCSnIE).
  */
 struct npcm7xx_kcs_reg {
 	u32 sts;
 	u32 dob;
 	u32 dib;
 	u32 ctl;
+	u32 ie;
 };
 
 struct npcm7xx_kcs_bmc {
@@ -63,9 +72,9 @@ struct npcm7xx_kcs_bmc {
 };
 
 static const struct npcm7xx_kcs_reg npcm7xx_kcs_reg_tbl[KCS_CHANNEL_MAX] = {
-	{ .sts = KCS1ST, .dob = KCS1DO, .dib = KCS1DI, .ctl = KCS1CTL },
-	{ .sts = KCS2ST, .dob = KCS2DO, .dib = KCS2DI, .ctl = KCS2CTL },
-	{ .sts = KCS3ST, .dob = KCS3DO, .dib = KCS3DI, .ctl = KCS3CTL },
+	{ .sts = KCS1ST, .dob = KCS1DO, .dib = KCS1DI, .ctl = KCS1CTL, .ie = KCS1IE },
+	{ .sts = KCS2ST, .dob = KCS2DO, .dib = KCS2DI, .ctl = KCS2CTL, .ie = KCS2IE },
+	{ .sts = KCS3ST, .dob = KCS3DO, .dib = KCS3DI, .ctl = KCS3CTL, .ie = KCS3IE },
 };
 
 static u8 npcm7xx_kcs_inb(struct kcs_bmc *kcs_bmc, u32 reg)
@@ -95,6 +104,9 @@ static void npcm7xx_kcs_enable_channel(struct kcs_bmc *kcs_bmc, bool enable)
 
 	regmap_update_bits(priv->map, priv->reg->ctl, KCS_CTL_IBFIE,
 			   enable ? KCS_CTL_IBFIE : 0);
+
+	regmap_update_bits(priv->map, priv->reg->ie, KCS_IE_IRQE | KCS_IE_HIRQE,
+			   enable ? KCS_IE_IRQE | KCS_IE_HIRQE : 0);
 }
 
 static irqreturn_t npcm7xx_kcs_irq(int irq, void *arg)
-- 
2.14.1