openwrt/target/linux/brcm47xx/patches-4.1/033-01-MIPS-BCM47xx-Support-on-SoC-bus-in-SPROM-reading-fun.patch

From daa7ce02513d2188fe6f5ff47ce5ef83eb7de739 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Sun, 25 Oct 2015 22:16:47 +0100
Subject: [PATCH 1/3] MIPS: BCM47xx: Support on-SoC bus in SPROM reading
 function
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To support (extract) SPROM on Broadcom ARM devices we should separate
SPROM code and make it a separated module. We won't want to export
bcm47xx_fill_sprom symbol so we should support SoC SPROM in the standard
fallback function and then modify ssb to use it.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11355/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
 arch/mips/bcm47xx/sprom.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

--- a/arch/mips/bcm47xx/sprom.c
+++ b/arch/mips/bcm47xx/sprom.c
@@ -610,14 +610,18 @@ static int bcm47xx_get_sprom_ssb(struct
 {
 	char prefix[10];
 
-	if (bus->bustype == SSB_BUSTYPE_PCI) {
+	switch (bus->bustype) {
+	case SSB_BUSTYPE_SSB:
+		bcm47xx_fill_sprom(out, NULL, false);
+		return 0;
+	case SSB_BUSTYPE_PCI:
 		memset(out, 0, sizeof(struct ssb_sprom));
 		snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
 			 bus->host_pci->bus->number + 1,
 			 PCI_SLOT(bus->host_pci->devfn));
 		bcm47xx_fill_sprom(out, prefix, false);
 		return 0;
-	} else {
+	default:
 		pr_warn("Unable to fill SPROM for given bustype.\n");
 		return -EINVAL;
 	}