openwrt/target/linux/brcm47xx/patches-3.18/032-05-MIPS-BCM47xx-Read-board-info-for-all-bcma-buses.patch

From 12e1ab54dcd414c3579cfd26be9d9c9e1cab92ad Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Tue, 12 May 2015 13:05:18 +0200
Subject: [PATCH] MIPS: BCM47xx: Read board info for all bcma buses
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Extra bcma buses may be totally different models, see following dump:
boardtype=0x0646
pci/1/1/boardtype=0x0545
pci/2/1/boardtype=0x62b
We need to detect them properly to allow drivers apply some board
specific hacks.

[ralf@linux-mips.org: folded in Rafal's fix.]

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: https://patchwork.linux-mips.org/patch/10028/
Patchwork: https://patchwork.linux-mips.org/patch/10048/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
 arch/mips/bcm47xx/setup.c                    |  3 --
 arch/mips/bcm47xx/sprom.c                    | 44 ++++++++++++++--------------
 arch/mips/include/asm/mach-bcm47xx/bcm47xx.h |  4 ---
 3 files changed, 22 insertions(+), 29 deletions(-)

diff --git a/arch/mips/bcm47xx/setup.c b/arch/mips/bcm47xx/setup.c
index 82ff9fd..98c075f 100644
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -206,9 +206,6 @@ void __init bcm47xx_bus_setup(void)
 		err = bcma_host_soc_init(&bcm47xx_bus.bcma);
 		if (err)
 			panic("Failed to initialize BCMA bus (err %d)", err);
-
-		bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo,
-					    NULL);
 	}
 #endif
 
diff --git a/arch/mips/bcm47xx/sprom.c b/arch/mips/bcm47xx/sprom.c
index 92a6c9d..b0d62e7 100644
--- a/arch/mips/bcm47xx/sprom.c
+++ b/arch/mips/bcm47xx/sprom.c
@@ -640,19 +640,6 @@ void bcm47xx_fill_ssb_boardinfo(struct ssb_boardinfo *boardinfo,
 }
 #endif
 
-#ifdef CONFIG_BCM47XX_BCMA
-void bcm47xx_fill_bcma_boardinfo(struct bcma_boardinfo *boardinfo,
-				 const char *prefix)
-{
-	nvram_read_u16(prefix, NULL, "boardvendor", &boardinfo->vendor, 0,
-		       true);
-	if (!boardinfo->vendor)
-		boardinfo->vendor = SSB_BOARDVENDOR_BCM;
-
-	nvram_read_u16(prefix, NULL, "boardtype", &boardinfo->type, 0, true);
-}
-#endif
-
 #if defined(CONFIG_BCM47XX_SSB)
 static int bcm47xx_get_sprom_ssb(struct ssb_bus *bus, struct ssb_sprom *out)
 {
@@ -707,33 +694,46 @@ static void bcm47xx_sprom_apply_prefix_alias(char *prefix, size_t prefix_size)
 
 static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out)
 {
-	char prefix[10];
+	struct bcma_boardinfo *binfo = &bus->boardinfo;
 	struct bcma_device *core;
+	char buf[10];
+	char *prefix;
+	bool fallback = false;
 
 	switch (bus->hosttype) {
 	case BCMA_HOSTTYPE_PCI:
 		memset(out, 0, sizeof(struct ssb_sprom));
-		snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
+		snprintf(buf, sizeof(buf), "pci/%u/%u/",
 			 bus->host_pci->bus->number + 1,
 			 PCI_SLOT(bus->host_pci->devfn));
-		bcm47xx_sprom_apply_prefix_alias(prefix, sizeof(prefix));
-		bcm47xx_fill_sprom(out, prefix, false);
-		return 0;
+		bcm47xx_sprom_apply_prefix_alias(buf, sizeof(buf));
+		prefix = buf;
+		break;
 	case BCMA_HOSTTYPE_SOC:
 		memset(out, 0, sizeof(struct ssb_sprom));
 		core = bcma_find_core(bus, BCMA_CORE_80211);
 		if (core) {
-			snprintf(prefix, sizeof(prefix), "sb/%u/",
+			snprintf(buf, sizeof(buf), "sb/%u/",
 				 core->core_index);
-			bcm47xx_fill_sprom(out, prefix, true);
+			prefix = buf;
+			fallback = true;
 		} else {
-			bcm47xx_fill_sprom(out, NULL, false);
+			prefix = NULL;
 		}
-		return 0;
+		break;
 	default:
 		pr_warn("Unable to fill SPROM for given bustype.\n");
 		return -EINVAL;
 	}
+
+	nvram_read_u16(prefix, NULL, "boardvendor", &binfo->vendor, 0, true);
+	if (!binfo->vendor)
+		binfo->vendor = SSB_BOARDVENDOR_BCM;
+	nvram_read_u16(prefix, NULL, "boardtype", &binfo->type, 0, true);
+
+	bcm47xx_fill_sprom(out, prefix, fallback);
+
+	return 0;
 }
 #endif
 
diff --git a/arch/mips/include/asm/mach-bcm47xx/bcm47xx.h b/arch/mips/include/asm/mach-bcm47xx/bcm47xx.h
index 8ed77f6..1461c10 100644
--- a/arch/mips/include/asm/mach-bcm47xx/bcm47xx.h
+++ b/arch/mips/include/asm/mach-bcm47xx/bcm47xx.h
@@ -52,10 +52,6 @@ void bcm47xx_fill_sprom(struct ssb_sprom *sprom, const char *prefix,
 void bcm47xx_fill_ssb_boardinfo(struct ssb_boardinfo *boardinfo,
 				const char *prefix);
 #endif
-#ifdef CONFIG_BCM47XX_BCMA
-void bcm47xx_fill_bcma_boardinfo(struct bcma_boardinfo *boardinfo,
-				 const char *prefix);
-#endif
 
 void bcm47xx_set_system_type(u16 chip_id);
 
-- 
1.8.4.5