From: Corey Minyard <cminyard@mvista.com>
Date: Wed, 24 Apr 2019 13:32:02 +0000 (-0500)
Subject: ipmi: Add the i2c-addr property for SSIF interfaces
X-Git-Tag: v5.15~6426^2~3
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d73236383eb1cd4b7b65c33a09f0ed45f6781f40;p=platform%2Fkernel%2Flinux-starfive.git

ipmi: Add the i2c-addr property for SSIF interfaces

This is required for SSIF to work.

There was no way to know if the interface being added was SI
or SSIF from the platform data, but that was required so the
i2c-addr is only added for SSIF interfaces.  So add a field
for that.

Also rework the logic a bit so that ipmi-type is not set
for SSIF interfaces, as it is not necessary for that.

Fixes: 3cd83bac481d ("ipmi: Consolidate the adding of platform devices")
Reported-by: Kamlakant Patel <kamlakantp@marvell.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: stable@vger.kernel.org # 5.1
---

diff --git a/drivers/char/ipmi/ipmi_dmi.c b/drivers/char/ipmi/ipmi_dmi.c
index f241146..f38e651 100644
--- a/drivers/char/ipmi/ipmi_dmi.c
+++ b/drivers/char/ipmi/ipmi_dmi.c
@@ -47,9 +47,11 @@ static void __init dmi_add_platform_ipmi(unsigned long base_addr,
 	memset(&p, 0, sizeof(p));
 
 	name = "dmi-ipmi-si";
+	p.iftype = IPMI_PLAT_IF_SI;
 	switch (type) {
 	case IPMI_DMI_TYPE_SSIF:
 		name = "dmi-ipmi-ssif";
+		p.iftype = IPMI_PLAT_IF_SSIF;
 		p.type = SI_TYPE_INVALID;
 		break;
 	case IPMI_DMI_TYPE_BT:
diff --git a/drivers/char/ipmi/ipmi_plat_data.c b/drivers/char/ipmi/ipmi_plat_data.c
index 8f0ca2a..28471ff 100644
--- a/drivers/char/ipmi/ipmi_plat_data.c
+++ b/drivers/char/ipmi/ipmi_plat_data.c
@@ -12,7 +12,7 @@ struct platform_device *ipmi_platform_add(const char *name, unsigned int inst,
 					  struct ipmi_plat_data *p)
 {
 	struct platform_device *pdev;
-	unsigned int num_r = 1, size, pidx = 0;
+	unsigned int num_r = 1, size = 0, pidx = 0;
 	struct resource r[4];
 	struct property_entry pr[6];
 	u32 flags;
@@ -21,19 +21,22 @@ struct platform_device *ipmi_platform_add(const char *name, unsigned int inst,
 	memset(pr, 0, sizeof(pr));
 	memset(r, 0, sizeof(r));
 
-	if (p->type == SI_BT)
-		size = 3;
-	else if (p->type == SI_TYPE_INVALID)
-		size = 0;
-	else
-		size = 2;
+	if (p->iftype == IPMI_PLAT_IF_SI) {
+		if (p->type == SI_BT)
+			size = 3;
+		else if (p->type != SI_TYPE_INVALID)
+			size = 2;
+
+		if (p->regsize == 0)
+			p->regsize = DEFAULT_REGSIZE;
+		if (p->regspacing == 0)
+			p->regspacing = p->regsize;
 
-	if (p->regsize == 0)
-		p->regsize = DEFAULT_REGSIZE;
-	if (p->regspacing == 0)
-		p->regspacing = p->regsize;
+		pr[pidx++] = PROPERTY_ENTRY_U8("ipmi-type", p->type);
+	} else if (p->iftype == IPMI_PLAT_IF_SSIF) {
+		pr[pidx++] = PROPERTY_ENTRY_U16("i2c-addr", p->addr);
+	}
 
-	pr[pidx++] = PROPERTY_ENTRY_U8("ipmi-type", p->type);
 	if (p->slave_addr)
 		pr[pidx++] = PROPERTY_ENTRY_U8("slave-addr", p->slave_addr);
 	pr[pidx++] = PROPERTY_ENTRY_U8("addr-source", p->addr_source);
diff --git a/drivers/char/ipmi/ipmi_plat_data.h b/drivers/char/ipmi/ipmi_plat_data.h
index 567cfce..9ba744e 100644
--- a/drivers/char/ipmi/ipmi_plat_data.h
+++ b/drivers/char/ipmi/ipmi_plat_data.h
@@ -6,7 +6,10 @@
 
 #include <linux/ipmi.h>
 
+enum ipmi_plat_interface_type { IPMI_PLAT_IF_SI, IPMI_PLAT_IF_SSIF };
+
 struct ipmi_plat_data {
+	enum ipmi_plat_interface_type iftype;
 	unsigned int type; /* si_type for si, SI_INVALID for others */
 	unsigned int space; /* addr_space for si, intf# for ssif. */
 	unsigned long addr;
diff --git a/drivers/char/ipmi/ipmi_si_hardcode.c b/drivers/char/ipmi/ipmi_si_hardcode.c
index 682221e..f6ece75 100644
--- a/drivers/char/ipmi/ipmi_si_hardcode.c
+++ b/drivers/char/ipmi/ipmi_si_hardcode.c
@@ -83,6 +83,7 @@ static void __init ipmi_hardcode_init_one(const char *si_type_str,
 
 	memset(&p, 0, sizeof(p));
 
+	p.iftype = IPMI_PLAT_IF_SI;
 	if (!si_type_str || !*si_type_str || strcmp(si_type_str, "kcs") == 0) {
 		p.type = SI_KCS;
 	} else if (strcmp(si_type_str, "smic") == 0) {
diff --git a/drivers/char/ipmi/ipmi_si_hotmod.c b/drivers/char/ipmi/ipmi_si_hotmod.c
index 03140f6..42a925f 100644
--- a/drivers/char/ipmi/ipmi_si_hotmod.c
+++ b/drivers/char/ipmi/ipmi_si_hotmod.c
@@ -108,6 +108,7 @@ static int parse_hotmod_str(const char *curr, enum hotmod_op *op,
 	int rv;
 	unsigned int ival;
 
+	h->iftype = IPMI_PLAT_IF_SI;
 	rv = parse_str(hotmod_ops, &ival, "operation", &curr);
 	if (rv)
 		return rv;