path: root/target/linux/bcm53xx/patches-3.14/112-bcm53xx-sprom-add-sprom-driver.patch

From 4e0ab3269a6d260a41a3673157753147f5f71341 Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Sun, 4 May 2014 13:19:20 +0200
Subject: [PATCH 03/17] bcm47xx-sprom: add Broadcom sprom parser driver

This driver needs an nvram driver and fetches the sprom values from the
nvram and provides it to any other driver. The calibration data for the
wifi chip the mac address and some more board description data is
stores in the sprom.

This is based on a copy of arch/mips/bcm47xx/sprom.c and my plan is to
make the bcm47xx MIPS SoCs also use this driver some time later.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
 .../devicetree/bindings/misc/bcm47xx-sprom.txt     |  16 +
 drivers/misc/Kconfig                               |  11 +
 drivers/misc/Makefile                              |   1 +
 drivers/misc/bcm47xx-sprom.c                       | 690 +++++++++++++++++++++
 4 files changed, 718 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/misc/bcm47xx-sprom.txt
 create mode 100644 drivers/misc/bcm47xx-sprom.c

--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/bcm47xx-sprom.txt
@@ -0,0 +1,16 @@
+Broadcom bcm47xx/bcm53xx sprom converter
+
+This driver provbides an sprom based on a given nvram.
+
+Required properties:
+
+- compatible : brcm,bcm47xx-sprom
+
+- nvram : reference to a nvram driver, e.g. bcm47xx-nvram
+
+Example:
+
+sprom0: sprom@0 {
+	compatible = "brcm,bcm47xx-sprom";
+	nvram = <&nvram0>;
+};
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -520,6 +520,17 @@ config BCM47XX_NVRAM
 	help
 		This adds support for the brcm47xx nvram driver.
 
+config BCM47XX_SPROM
+	tristate "BCM47XX sprom driver"
+	help
+	  This driver parses the sprom from a given nvram which is found on
+	  Broadcom bcm47xx and bcm53xx SoCs.
+
+	  The sprom contains board configuration data like the
+	  calibration data fro the wifi chips, the mac addresses used
+	  by the board and many other board configuration data. This
+	  driver will provide the sprom to bcma.
+
 source "drivers/misc/c2port/Kconfig"
 source "drivers/misc/eeprom/Kconfig"
 source "drivers/misc/cb710/Kconfig"
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -55,3 +55,4 @@ obj-$(CONFIG_SRAM)		+= sram.o
 obj-y				+= mic/
 obj-$(CONFIG_GENWQE)		+= genwqe/
 obj-$(CONFIG_BCM47XX_NVRAM)	+= bcm47xx-nvram.o
+obj-$(CONFIG_BCM47XX_SPROM)	+= bcm47xx-sprom.o
--- /dev/null
+++ b/drivers/misc/bcm47xx-sprom.c
@@ -0,0 +1,690 @@
+/*
+ * BCM47xx/BCM53xx nvram variable access
+ *
+ * Copyright (C) 2005 Broadcom Corporation
+ * Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
+ * Copyright (C) 2006 Michael Buesch <m@bues.ch>
+ * Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org>
+ * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2010-2014 Hauke Mehrtens <hauke@hauke-m.de>
+ *
+ * This program is free software; you can redistribute	it and/or modify it
+ * under  the terms of	the GNU General	 Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/of_address.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/of_platform.h>
+#include <linux/io.h>
+#include <linux/ssb/ssb.h>
+#include <linux/bcm47xx_nvram.h>
+#include <linux/if_ether.h>
+#include <linux/etherdevice.h>
+
+struct bcm47xx_sprom_fill {
+	const char *prefix;
+	bool fallback;
+	int (*getenv)(const struct bcm47xx_sprom_fill *fill, const char *name,
+		      char *val, size_t val_len);
+	const void *priv;
+};
+
+static void create_key(const char *prefix, const char *postfix,
+		       const char *name, char *buf, int len)
+{
+	if (prefix && postfix)
+		snprintf(buf, len, "%s%s%s", prefix, name, postfix);
+	else if (prefix)
+		snprintf(buf, len, "%s%s", prefix, name);
+	else if (postfix)
+		snprintf(buf, len, "%s%s", name, postfix);
+	else
+		snprintf(buf, len, "%s", name);
+}
+
+static int get_nvram_var(const struct bcm47xx_sprom_fill *fill,
+			 const char *postfix, const char *name, char *buf,
+			 int len)
+{
+	char key[40];
+	int err;
+
+	create_key(fill->prefix, postfix, name, key, sizeof(key));
+
+	err = fill->getenv(fill, key, buf, len);
+	if (fill->fallback && err == -ENOENT && fill->prefix) {
+		create_key(NULL, postfix, name, key, sizeof(key));
+		err = fill->getenv(fill, key, buf, len);
+	}
+	return err;
+}
+
+#define NVRAM_READ_VAL(type)						\
+static void nvram_read_ ## type (const struct bcm47xx_sprom_fill *fill,	\
+				 const char *postfix, const char *name, \
+				 type *val, type allset)		\
+{									\
+	char buf[100];							\
+	int err;							\
+	type var;							\
+									\
+	err = get_nvram_var(fill, postfix, name, buf, sizeof(buf));	\
+	if (err < 0)							\
+		return;							\
+	err = kstrto ## type(strim(buf), 0, &var);			\
+	if (err) {							\
+		pr_warn("can not parse nvram name %s%s%s with value %s got %i\n",	\
+			fill->prefix, name, postfix, buf, err);		\
+		return;							\
+	}								\
+	if (allset && var == allset)					\
+		return;							\
+	*val = var;							\
+}
+
+NVRAM_READ_VAL(u8)
+NVRAM_READ_VAL(s8)
+NVRAM_READ_VAL(u16)
+NVRAM_READ_VAL(u32)
+
+#undef NVRAM_READ_VAL
+
+static void nvram_read_u32_2(const struct bcm47xx_sprom_fill *fill,
+			     const char *name, u16 *val_lo, u16 *val_hi)
+{
+	char buf[100];
+	int err;
+	u32 val;
+
+	err = get_nvram_var(fill, NULL, name, buf, sizeof(buf));
+	if (err < 0)
+		return;
+	err = kstrtou32(strim(buf), 0, &val);
+	if (err) {
+		pr_warn("can not parse nvram name %s%s with value %s got %i\n",
+			fill->prefix, name, buf, err);
+		return;
+	}
+	*val_lo = (val & 0x0000FFFFU);
+	*val_hi = (val & 0xFFFF0000U) >> 16;
+}
+
+static void nvram_read_leddc(const struct bcm47xx_sprom_fill *fill,
+			     const char *name, u8 *leddc_on_time,
+			     u8 *leddc_off_time)
+{
+	char buf[100];
+	int err;
+	u32 val;
+
+	err = get_nvram_var(fill, NULL, name, buf, sizeof(buf));
+	if (err < 0)
+		return;
+	err = kstrtou32(strim(buf), 0, &val);
+	if (err) {
+		pr_warn("can not parse nvram name %s%s with value %s got %i\n",
+			fill->prefix, name, buf, err);
+		return;
+	}
+
+	if (val == 0xffff || val == 0xffffffff)
+		return;
+
+	*leddc_on_time = val & 0xff;
+	*leddc_off_time = (val >> 16) & 0xff;
+}
+
+static void nvram_read_macaddr(const struct bcm47xx_sprom_fill *fill,
+			       const char *name, u8 val[6])
+{
+	char buf[100];
+	int err;
+
+	err = get_nvram_var(fill, NULL, name, buf, sizeof(buf));
+	if (err < 0)
+		return;
+
+	bcm47xx_nvram_parse_macaddr(buf, val);
+}
+
+static void nvram_read_alpha2(const struct bcm47xx_sprom_fill *fill,
+			      const char *name, char val[2])
+{
+	char buf[10];
+	int err;
+
+	err = get_nvram_var(fill, NULL, name, buf, sizeof(buf));
+	if (err < 0)
+		return;
+	if (buf[0] == '0')
+		return;
+	if (strlen(buf) > 2) {
+		pr_warn("alpha2 is too long %s\n", buf);
+		return;
+	}
+	memcpy(val, buf, 2);
+}
+
+static void bcm47xx_sprom_fill_r1234589(struct ssb_sprom *sprom,
+					const struct bcm47xx_sprom_fill *fill)
+{
+	nvram_read_u16(fill, NULL, "devid", &sprom->dev_id, 0);
+	nvram_read_u8(fill, NULL, "ledbh0", &sprom->gpio0, 0xff);
+	nvram_read_u8(fill, NULL, "ledbh1", &sprom->gpio1, 0xff);
+	nvram_read_u8(fill, NULL, "ledbh2", &sprom->gpio2, 0xff);
+	nvram_read_u8(fill, NULL, "ledbh3", &sprom->gpio3, 0xff);
+	nvram_read_u8(fill, NULL, "aa2g", &sprom->ant_available_bg, 0);
+	nvram_read_u8(fill, NULL, "aa5g", &sprom->ant_available_a, 0);
+	nvram_read_s8(fill, NULL, "ag0", &sprom->antenna_gain.a0, 0);
+	nvram_read_s8(fill, NULL, "ag1", &sprom->antenna_gain.a1, 0);
+	nvram_read_alpha2(fill, "ccode", sprom->alpha2);
+}
+
+static void bcm47xx_sprom_fill_r12389(struct ssb_sprom *sprom,
+				      const struct bcm47xx_sprom_fill *fill)
+{
+	nvram_read_u16(fill, NULL, "pa0b0", &sprom->pa0b0, 0);
+	nvram_read_u16(fill, NULL, "pa0b1", &sprom->pa0b1, 0);
+	nvram_read_u16(fill, NULL, "pa0b2", &sprom->pa0b2, 0);
+	nvram_read_u8(fill, NULL, "pa0itssit", &sprom->itssi_bg, 0);
+	nvram_read_u8(fill, NULL, "pa0maxpwr", &sprom->maxpwr_bg, 0);
+	nvram_read_u16(fill, NULL, "pa1b0", &sprom->pa1b0, 0);
+	nvram_read_u16(fill, NULL, "pa1b1", &sprom->pa1b1, 0);
+	nvram_read_u16(fill, NULL, "pa1b2", &sprom->pa1b2, 0);
+	nvram_read_u8(fill, NULL, "pa1itssit", &sprom->itssi_a, 0);
+	nvram_read_u8(fill, NULL, "pa1maxpwr", &sprom->maxpwr_a, 0);
+}
+
+static void bcm47xx_sprom_fill_r1(struct ssb_sprom *sprom,
+				  const struct bcm47xx_sprom_fill *fill)
+{
+	nvram_read_u16(fill, NULL, "boardflags", &sprom->boardflags_lo, 0);
+	nvram_read_u8(fill, NULL, "cc", &sprom->country_code, 0);
+}
+
+static void bcm47xx_sprom_fill_r2389(struct ssb_sprom *sprom,
+				     const struct bcm47xx_sprom_fill *fill)
+{
+	nvram_read_u8(fill, NULL, "opo", &sprom->opo, 0);
+	nvram_read_u16(fill, NULL, "pa1lob0", &sprom->pa1lob0, 0);
+	nvram_read_u16(fill, NULL, "pa1lob1", &sprom->pa1lob1, 0);
+	nvram_read_u16(fill, NULL, "pa1lob2", &sprom->pa1lob2, 0);
+	nvram_read_u16(fill, NULL, "pa1hib0", &sprom->pa1hib0, 0);
+	nvram_read_u16(fill, NULL, "pa1hib1", &sprom->pa1hib1, 0);
+	nvram_read_u16(fill, NULL, "pa1hib2", &sprom->pa1hib2, 0);
+	nvram_read_u8(fill, NULL, "pa1lomaxpwr", &sprom->maxpwr_al, 0);
+	nvram_read_u8(fill, NULL, "pa1himaxpwr", &sprom->maxpwr_ah, 0);
+}
+
+static void bcm47xx_sprom_fill_r389(struct ssb_sprom *sprom,
+				    const struct bcm47xx_sprom_fill *fill)
+{
+	nvram_read_u8(fill, NULL, "bxa2g", &sprom->bxa2g, 0);
+	nvram_read_u8(fill, NULL, "rssisav2g", &sprom->rssisav2g, 0);
+	nvram_read_u8(fill, NULL, "rssismc2g", &sprom->rssismc2g, 0);
+	nvram_read_u8(fill, NULL, "rssismf2g", &sprom->rssismf2g, 0);
+	nvram_read_u8(fill, NULL, "bxa5g", &sprom->bxa5g, 0);
+	nvram_read_u8(fill, NULL, "rssisav5g", &sprom->rssisav5g, 0);
+	nvram_read_u8(fill, NULL, "rssismc5g", &sprom->rssismc5g, 0);
+	nvram_read_u8(fill, NULL, "rssismf5g", &sprom->rssismf5g, 0);
+	nvram_read_u8(fill, NULL, "tri2g", &sprom->tri2g, 0);
+	nvram_read_u8(fill, NULL, "tri5g", &sprom->tri5g, 0);
+	nvram_read_u8(fill, NULL, "tri5gl", &sprom->tri5gl, 0);
+	nvram_read_u8(fill, NULL, "tri5gh", &sprom->tri5gh, 0);
+	nvram_read_s8(fill, NULL, "rxpo2g", &sprom->rxpo2g, 0);
+	nvram_read_s8(fill, NULL, "rxpo5g", &sprom->rxpo5g, 0);
+}
+
+static void bcm47xx_sprom_fill_r3(struct ssb_sprom *sprom,
+				  const struct bcm47xx_sprom_fill *fill)
+{
+	nvram_read_u8(fill, NULL, "regrev", &sprom->regrev, 0);
+	nvram_read_leddc(fill, "leddc", &sprom->leddc_on_time,
+			 &sprom->leddc_off_time);
+}
+
+static void bcm47xx_sprom_fill_r4589(struct ssb_sprom *sprom,
+				     const struct bcm47xx_sprom_fill *fill)
+{
+	nvram_read_u8(fill, NULL, "regrev", &sprom->regrev, 0);
+	nvram_read_s8(fill, NULL, "ag2", &sprom->antenna_gain.a2, 0);
+	nvram_read_s8(fill, NULL, "ag3", &sprom->antenna_gain.a3, 0);
+	nvram_read_u8(fill, NULL, "txchain", &sprom->txchain, 0xf);
+	nvram_read_u8(fill, NULL, "rxchain", &sprom->rxchain, 0xf);
+	nvram_read_u8(fill, NULL, "antswitch", &sprom->antswitch, 0xff);
+	nvram_read_leddc(fill, "leddc", &sprom->leddc_on_time,
+			 &sprom->leddc_off_time);
+}
+
+static void bcm47xx_sprom_fill_r458(struct ssb_sprom *sprom,
+				    const struct bcm47xx_sprom_fill *fill)
+{
+	nvram_read_u16(fill, NULL, "cck2gpo", &sprom->cck2gpo, 0);
+	nvram_read_u32(fill, NULL, "ofdm2gpo", &sprom->ofdm2gpo, 0);
+	nvram_read_u32(fill, NULL, "ofdm5gpo", &sprom->ofdm5gpo, 0);
+	nvram_read_u32(fill, NULL, "ofdm5glpo", &sprom->ofdm5glpo, 0);
+	nvram_read_u32(fill, NULL, "ofdm5ghpo", &sprom->ofdm5ghpo, 0);
+	nvram_read_u16(fill, NULL, "cddpo", &sprom->cddpo, 0);
+	nvram_read_u16(fill, NULL, "stbcpo", &sprom->stbcpo, 0);
+	nvram_read_u16(fill, NULL, "bw40po", &sprom->bw40po, 0);
+	nvram_read_u16(fill, NULL, "bwduppo", &sprom->bwduppo, 0);
+	nvram_read_u16(fill, NULL, "mcs2gpo0", &sprom->mcs2gpo[0], 0);
+	nvram_read_u16(fill, NULL, "mcs2gpo1", &sprom->mcs2gpo[1], 0);
+	nvram_read_u16(fill, NULL, "mcs2gpo2", &sprom->mcs2gpo[2], 0);
+	nvram_read_u16(fill, NULL, "mcs2gpo3", &sprom->mcs2gpo[3], 0);
+	nvram_read_u16(fill, NULL, "mcs2gpo4", &sprom->mcs2gpo[4], 0);
+	nvram_read_u16(fill, NULL, "mcs2gpo5", &sprom->mcs2gpo[5], 0);
+	nvram_read_u16(fill, NULL, "mcs2gpo6", &sprom->mcs2gpo[6], 0);
+	nvram_read_u16(fill, NULL, "mcs2gpo7", &sprom->mcs2gpo[7], 0);
+	nvram_read_u16(fill, NULL, "mcs5gpo0", &sprom->mcs5gpo[0], 0);
+	nvram_read_u16(fill, NULL, "mcs5gpo1", &sprom->mcs5gpo[1], 0);
+	nvram_read_u16(fill, NULL, "mcs5gpo2", &sprom->mcs5gpo[2], 0);
+	nvram_read_u16(fill, NULL, "mcs5gpo3", &sprom->mcs5gpo[3], 0);
+	nvram_read_u16(fill, NULL, "mcs5gpo4", &sprom->mcs5gpo[4], 0);
+	nvram_read_u16(fill, NULL, "mcs5gpo5", &sprom->mcs5gpo[5], 0);
+	nvram_read_u16(fill, NULL, "mcs5gpo6", &sprom->mcs5gpo[6], 0);
+	nvram_read_u16(fill, NULL, "mcs5gpo7", &sprom->mcs5gpo[7], 0);
+	nvram_read_u16(fill, NULL, "mcs5glpo0", &sprom->mcs5glpo[0], 0);
+	nvram_read_u16(fill, NULL, "mcs5glpo1", &sprom->mcs5glpo[1], 0);
+	nvram_read_u16(fill, NULL, "mcs5glpo2", &sprom->mcs5glpo[2], 0);
+	nvram_read_u16(fill, NULL, "mcs5glpo3", &sprom->mcs5glpo[3], 0);
+	nvram_read_u16(fill, NULL, "mcs5glpo4", &sprom->mcs5glpo[4], 0);
+	nvram_read_u16(fill, NULL, "mcs5glpo5", &sprom->mcs5glpo[5], 0);
+	nvram_read_u16(fill, NULL, "mcs5glpo6", &sprom->mcs5glpo[6], 0);
+	nvram_read_u16(fill, NULL, "mcs5glpo7", &sprom->mcs5glpo[7], 0);
+	nvram_read_u16(fill, NULL, "mcs5ghpo0", &sprom->mcs5ghpo[0], 0);
+	nvram_read_u16(fill, NULL, "mcs5ghpo1", &sprom->mcs5ghpo[1], 0);
+	nvram_read_u16(fill, NULL, "mcs5ghpo2", &sprom->mcs5ghpo[2], 0);
+	nvram_read_u16(fill, NULL, "mcs5ghpo3", &sprom->mcs5ghpo[3], 0);
+	nvram_read_u16(fill, NULL, "mcs5ghpo4", &sprom->mcs5ghpo[4], 0);
+	nvram_read_u16(fill, NULL, "mcs5ghpo5", &sprom->mcs5ghpo[5], 0);
+	nvram_read_u16(fill, NULL, "mcs5ghpo6", &sprom->mcs5ghpo[6], 0);
+	nvram_read_u16(fill, NULL, "mcs5ghpo7", &sprom->mcs5ghpo[7], 0);
+}
+
+static void bcm47xx_sprom_fill_r45(struct ssb_sprom *sprom,
+				   const struct bcm47xx_sprom_fill *fill)
+{
+	nvram_read_u8(fill, NULL, "txpid2ga0", &sprom->txpid2g[0], 0);
+	nvram_read_u8(fill, NULL, "txpid2ga1", &sprom->txpid2g[1], 0);
+	nvram_read_u8(fill, NULL, "txpid2ga2", &sprom->txpid2g[2], 0);
+	nvram_read_u8(fill, NULL, "txpid2ga3", &sprom->txpid2g[3], 0);
+	nvram_read_u8(fill, NULL, "txpid5ga0", &sprom->txpid5g[0], 0);
+	nvram_read_u8(fill, NULL, "txpid5ga1", &sprom->txpid5g[1], 0);
+	nvram_read_u8(fill, NULL, "txpid5ga2", &sprom->txpid5g[2], 0);
+	nvram_read_u8(fill, NULL, "txpid5ga3", &sprom->txpid5g[3], 0);
+	nvram_read_u8(fill, NULL, "txpid5gla0", &sprom->txpid5gl[0], 0);
+	nvram_read_u8(fill, NULL, "txpid5gla1", &sprom->txpid5gl[1], 0);
+	nvram_read_u8(fill, NULL, "txpid5gla2", &sprom->txpid5gl[2], 0);
+	nvram_read_u8(fill, NULL, "txpid5gla3", &sprom->txpid5gl[3], 0);
+	nvram_read_u8(fill, NULL, "txpid5gha0", &sprom->txpid5gh[0], 0);
+	nvram_read_u8(fill, NULL, "txpid5gha1", &sprom->txpid5gh[1], 0);
+	nvram_read_u8(fill, NULL, "txpid5gha2", &sprom->txpid5gh[2], 0);
+	nvram_read_u8(fill, NULL, "txpid5gha3", &sprom->txpid5gh[3], 0);
+}
+
+static void bcm47xx_sprom_fill_r89(struct ssb_sprom *sprom,
+				   const struct bcm47xx_sprom_fill *fill)
+{
+	nvram_read_u8(fill, NULL, "tssipos2g", &sprom->fem.ghz2.tssipos, 0);
+	nvram_read_u8(fill, NULL, "extpagain2g", &sprom->fem.ghz2.extpa_gain, 0);
+	nvram_read_u8(fill, NULL, "pdetrange2g", &sprom->fem.ghz2.pdet_range, 0);
+	nvram_read_u8(fill, NULL, "triso2g", &sprom->fem.ghz2.tr_iso, 0);
+	nvram_read_u8(fill, NULL, "antswctl2g", &sprom->fem.ghz2.antswlut, 0);
+	nvram_read_u8(fill, NULL, "tssipos5g", &sprom->fem.ghz5.tssipos, 0);
+	nvram_read_u8(fill, NULL, "extpagain5g", &sprom->fem.ghz5.extpa_gain, 0);
+	nvram_read_u8(fill, NULL, "pdetrange5g", &sprom->fem.ghz5.pdet_range, 0);
+	nvram_read_u8(fill, NULL, "triso5g", &sprom->fem.ghz5.tr_iso, 0);
+	nvram_read_u8(fill, NULL, "antswctl5g", &sprom->fem.ghz5.antswlut, 0);
+	nvram_read_u8(fill, NULL, "tempthresh", &sprom->tempthresh, 0);
+	nvram_read_u8(fill, NULL, "tempoffset", &sprom->tempoffset, 0);
+	nvram_read_u16(fill, NULL, "rawtempsense", &sprom->rawtempsense, 0);
+	nvram_read_u8(fill, NULL, "measpower", &sprom->measpower, 0);
+	nvram_read_u8(fill, NULL, "tempsense_slope", &sprom->tempsense_slope, 0);
+	nvram_read_u8(fill, NULL, "tempcorrx", &sprom->tempcorrx, 0);
+	nvram_read_u8(fill, NULL, "tempsense_option", &sprom->tempsense_option, 0);
+	nvram_read_u8(fill, NULL, "freqoffset_corr", &sprom->freqoffset_corr, 0);
+	nvram_read_u8(fill, NULL, "iqcal_swp_dis", &sprom->iqcal_swp_dis, 0);
+	nvram_read_u8(fill, NULL, "hw_iqcal_en", &sprom->hw_iqcal_en, 0);
+	nvram_read_u8(fill, NULL, "elna2g", &sprom->elna2g, 0);
+	nvram_read_u8(fill, NULL, "elna5g", &sprom->elna5g, 0);
+	nvram_read_u8(fill, NULL, "phycal_tempdelta", &sprom->phycal_tempdelta, 0);
+	nvram_read_u8(fill, NULL, "temps_period", &sprom->temps_period, 0);
+	nvram_read_u8(fill, NULL, "temps_hysteresis", &sprom->temps_hysteresis, 0);
+	nvram_read_u8(fill, NULL, "measpower1", &sprom->measpower1, 0);
+	nvram_read_u8(fill, NULL, "measpower2", &sprom->measpower2, 0);
+	nvram_read_u8(fill, NULL, "rxgainerr2ga0", &sprom->rxgainerr2ga[0], 0);
+	nvram_read_u8(fill, NULL, "rxgainerr2ga1", &sprom->rxgainerr2ga[1], 0);
+	nvram_read_u8(fill, NULL, "rxgainerr2ga2", &sprom->rxgainerr2ga[2], 0);
+	nvram_read_u8(fill, NULL, "rxgainerr5gla0", &sprom->rxgainerr5gla[0], 0);
+	nvram_read_u8(fill, NULL, "rxgainerr5gla1", &sprom->rxgainerr5gla[1], 0);
+	nvram_read_u8(fill, NULL, "rxgainerr5gla2", &sprom->rxgainerr5gla[2], 0);
+	nvram_read_u8(fill, NULL, "rxgainerr5gma0", &sprom->rxgainerr5gma[0], 0);
+	nvram_read_u8(fill, NULL, "rxgainerr5gma1", &sprom->rxgainerr5gma[1], 0);
+	nvram_read_u8(fill, NULL, "rxgainerr5gma2", &sprom->rxgainerr5gma[2], 0);
+	nvram_read_u8(fill, NULL, "rxgainerr5gha0", &sprom->rxgainerr5gha[0], 0);
+	nvram_read_u8(fill, NULL, "rxgainerr5gha1", &sprom->rxgainerr5gha[1], 0);
+	nvram_read_u8(fill, NULL, "rxgainerr5gha2", &sprom->rxgainerr5gha[2], 0);
+	nvram_read_u8(fill, NULL, "rxgainerr5gua0", &sprom->rxgainerr5gua[0], 0);
+	nvram_read_u8(fill, NULL, "rxgainerr5gua1", &sprom->rxgainerr5gua[1], 0);
+	nvram_read_u8(fill, NULL, "rxgainerr5gua2", &sprom->rxgainerr5gua[2], 0);
+	nvram_read_u8(fill, NULL, "noiselvl2ga0", &sprom->noiselvl2ga[0], 0);
+	nvram_read_u8(fill, NULL, "noiselvl2ga1", &sprom->noiselvl2ga[1], 0);
+	nvram_read_u8(fill, NULL, "noiselvl2ga2", &sprom->noiselvl2ga[2], 0);
+	nvram_read_u8(fill, NULL, "noiselvl5gla0", &sprom->noiselvl5gla[0], 0);
+	nvram_read_u8(fill, NULL, "noiselvl5gla1", &sprom->noiselvl5gla[1], 0);
+	nvram_read_u8(fill, NULL, "noiselvl5gla2", &sprom->noiselvl5gla[2], 0);
+	nvram_read_u8(fill, NULL, "noiselvl5gma0", &sprom->noiselvl5gma[0], 0);
+	nvram_read_u8(fill, NULL, "noiselvl5gma1", &sprom->noiselvl5gma[1], 0);
+	nvram_read_u8(fill, NULL, "noiselvl5gma2", &sprom->noiselvl5gma[2], 0);
+	nvram_read_u8(fill, NULL, "noiselvl5gha0", &sprom->noiselvl5gha[0], 0);
+	nvram_read_u8(fill, NULL, "noiselvl5gha1", &sprom->noiselvl5gha[1], 0);
+	nvram_read_u8(fill, NULL, "noiselvl5gha2", &sprom->noiselvl5gha[2], 0);
+	nvram_read_u8(fill, NULL, "noiselvl5gua0", &sprom->noiselvl5gua[0], 0);
+	nvram_read_u8(fill, NULL, "noiselvl5gua1", &sprom->noiselvl5gua[1], 0);
+	nvram_read_u8(fill, NULL, "noiselvl5gua2", &sprom->noiselvl5gua[2], 0);
+	nvram_read_u8(fill, NULL, "pcieingress_war", &sprom->pcieingress_war, 0);
+}
+
+static void bcm47xx_sprom_fill_r9(struct ssb_sprom *sprom,
+				  const struct bcm47xx_sprom_fill *fill)
+{
+	nvram_read_u16(fill, NULL, "cckbw202gpo", &sprom->cckbw202gpo, 0);
+	nvram_read_u16(fill, NULL, "cckbw20ul2gpo", &sprom->cckbw20ul2gpo, 0);
+	nvram_read_u32(fill, NULL, "legofdmbw202gpo", &sprom->legofdmbw202gpo, 0);
+	nvram_read_u32(fill, NULL, "legofdmbw20ul2gpo", &sprom->legofdmbw20ul2gpo, 0);
+	nvram_read_u32(fill, NULL, "legofdmbw205glpo", &sprom->legofdmbw205glpo, 0);
+	nvram_read_u32(fill, NULL, "legofdmbw20ul5glpo", &sprom->legofdmbw20ul5glpo, 0);
+	nvram_read_u32(fill, NULL, "legofdmbw205gmpo", &sprom->legofdmbw205gmpo, 0);
+	nvram_read_u32(fill, NULL, "legofdmbw20ul5gmpo", &sprom->legofdmbw20ul5gmpo, 0);
+	nvram_read_u32(fill, NULL, "legofdmbw205ghpo", &sprom->legofdmbw205ghpo, 0);
+	nvram_read_u32(fill, NULL, "legofdmbw20ul5ghpo", &sprom->legofdmbw20ul5ghpo, 0);
+	nvram_read_u32(fill, NULL, "mcsbw202gpo", &sprom->mcsbw202gpo, 0);
+	nvram_read_u32(fill, NULL, "mcsbw20ul2gpo", &sprom->mcsbw20ul2gpo, 0);
+	nvram_read_u32(fill, NULL, "mcsbw402gpo", &sprom->mcsbw402gpo, 0);
+	nvram_read_u32(fill, NULL, "mcsbw205glpo", &sprom->mcsbw205glpo, 0);
+	nvram_read_u32(fill, NULL, "mcsbw20ul5glpo", &sprom->mcsbw20ul5glpo, 0);
+	nvram_read_u32(fill, NULL, "mcsbw405glpo", &sprom->mcsbw405glpo, 0);
+	nvram_read_u32(fill, NULL, "mcsbw205gmpo", &sprom->mcsbw205gmpo, 0);
+	nvram_read_u32(fill, NULL, "mcsbw20ul5gmpo", &sprom->mcsbw20ul5gmpo, 0);
+	nvram_read_u32(fill, NULL, "mcsbw405gmpo", &sprom->mcsbw405gmpo, 0);
+	nvram_read_u32(fill, NULL, "mcsbw205ghpo", &sprom->mcsbw205ghpo, 0);
+	nvram_read_u32(fill, NULL, "mcsbw20ul5ghpo", &sprom->mcsbw20ul5ghpo, 0);
+	nvram_read_u32(fill, NULL, "mcsbw405ghpo", &sprom->mcsbw405ghpo, 0);
+	nvram_read_u16(fill, NULL, "mcs32po", &sprom->mcs32po, 0);
+	nvram_read_u16(fill, NULL, "legofdm40duppo", &sprom->legofdm40duppo, 0);
+	nvram_read_u8(fill, NULL, "sar2g", &sprom->sar2g, 0);
+	nvram_read_u8(fill, NULL, "sar5g", &sprom->sar5g, 0);
+}
+
+static void bcm47xx_sprom_fill_path_r4589(struct ssb_sprom *sprom,
+					  const struct bcm47xx_sprom_fill *fill)
+{
+	char postfix[2];
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(sprom->core_pwr_info); i++) {
+		struct ssb_sprom_core_pwr_info *pwr_info = &sprom->core_pwr_info[i];
+
+		snprintf(postfix, sizeof(postfix), "%i", i);
+		nvram_read_u8(fill, postfix, "maxp2ga", &pwr_info->maxpwr_2g, 0);
+		nvram_read_u8(fill, postfix, "itt2ga", &pwr_info->itssi_2g, 0);
+		nvram_read_u8(fill, postfix, "itt5ga", &pwr_info->itssi_5g, 0);
+		nvram_read_u16(fill, postfix, "pa2gw0a", &pwr_info->pa_2g[0], 0);
+		nvram_read_u16(fill, postfix, "pa2gw1a", &pwr_info->pa_2g[1], 0);
+		nvram_read_u16(fill, postfix, "pa2gw2a", &pwr_info->pa_2g[2], 0);
+		nvram_read_u8(fill, postfix, "maxp5ga", &pwr_info->maxpwr_5g, 0);
+		nvram_read_u8(fill, postfix, "maxp5gha", &pwr_info->maxpwr_5gh, 0);
+		nvram_read_u8(fill, postfix, "maxp5gla", &pwr_info->maxpwr_5gl, 0);
+		nvram_read_u16(fill, postfix, "pa5gw0a", &pwr_info->pa_5g[0], 0);
+		nvram_read_u16(fill, postfix, "pa5gw1a", &pwr_info->pa_5g[1], 0);
+		nvram_read_u16(fill, postfix, "pa5gw2a", &pwr_info->pa_5g[2], 0);
+		nvram_read_u16(fill, postfix, "pa5glw0a", &pwr_info->pa_5gl[0], 0);
+		nvram_read_u16(fill, postfix, "pa5glw1a", &pwr_info->pa_5gl[1], 0);
+		nvram_read_u16(fill, postfix, "pa5glw2a", &pwr_info->pa_5gl[2], 0);
+		nvram_read_u16(fill, postfix, "pa5ghw0a", &pwr_info->pa_5gh[0], 0);
+		nvram_read_u16(fill, postfix, "pa5ghw1a", &pwr_info->pa_5gh[1], 0);
+		nvram_read_u16(fill, postfix, "pa5ghw2a", &pwr_info->pa_5gh[2], 0);
+	}
+}
+
+static void bcm47xx_sprom_fill_path_r45(struct ssb_sprom *sprom,
+					const struct bcm47xx_sprom_fill *fill)
+{
+	char postfix[2];
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(sprom->core_pwr_info); i++) {
+		struct ssb_sprom_core_pwr_info *pwr_info = &sprom->core_pwr_info[i];
+
+		snprintf(postfix, sizeof(postfix), "%i", i);
+		nvram_read_u16(fill, postfix, "pa2gw3a", &pwr_info->pa_2g[3], 0);
+		nvram_read_u16(fill, postfix, "pa5gw3a", &pwr_info->pa_5g[3], 0);
+		nvram_read_u16(fill, postfix, "pa5glw3a", &pwr_info->pa_5gl[3], 0);
+		nvram_read_u16(fill, postfix, "pa5ghw3a", &pwr_info->pa_5gh[3], 0);
+	}
+}
+
+static bool bcm47xx_is_valid_mac(u8 *mac)
+{
+	return mac && !(mac[0] == 0x00 && mac[1] == 0x90 && mac[2] == 0x4c);
+}
+
+static int bcm47xx_increase_mac_addr(u8 *mac, u8 num)
+{
+	u8 *oui = mac + ETH_ALEN/2 - 1;
+	u8 *p = mac + ETH_ALEN - 1;
+
+	do {
+		(*p) += num;
+		if (*p > num)
+			break;
+		p--;
+		num = 1;
+	} while (p != oui);
+
+	if (p == oui) {
+		pr_err("unable to fetch mac address\n");
+		return -ENOENT;
+	}
+	return 0;
+}
+
+/*
+ * This is a global counter because different instances of sprom will
+ * access the same nvram.
+ */
+static int mac_addr_used = 2;
+
+static void bcm47xx_sprom_fill_ethernet(struct ssb_sprom *sprom,
+					const struct bcm47xx_sprom_fill *fill)
+{
+	nvram_read_macaddr(fill, "et0macaddr", sprom->et0mac);
+	nvram_read_u8(fill, NULL, "et0mdcport", &sprom->et0mdcport, 0);
+	nvram_read_u8(fill, NULL, "et0phyaddr", &sprom->et0phyaddr, 0);
+
+	nvram_read_macaddr(fill, "et1macaddr", sprom->et1mac);
+	nvram_read_u8(fill, NULL, "et1mdcport", &sprom->et1mdcport, 0);
+	nvram_read_u8(fill, NULL, "et1phyaddr", &sprom->et1phyaddr, 0);
+
+	nvram_read_macaddr(fill, "macaddr", sprom->il0mac);
+	nvram_read_macaddr(fill, "il0macaddr", sprom->il0mac);
+
+	/*
+	 * The address prefix 00:90:4C is used by Broadcom in their initial
+	 * configuration. When a mac address with the prefix 00:90:4C is used
+	 * all devices from the same series are sharing the same mac address.
+	 * To prevent mac address collisions we replace them with a mac address
+	 * based on the base address.
+	 */
+	if (!bcm47xx_is_valid_mac(sprom->il0mac)) {
+		u8 mac[6];
+		struct bcm47xx_sprom_fill fill_no_prefix;
+
+		memcpy(&fill_no_prefix, fill, sizeof(fill_no_prefix));
+		fill_no_prefix.prefix = NULL;
+
+		nvram_read_macaddr(&fill_no_prefix, "et0macaddr", mac);
+		if (bcm47xx_is_valid_mac(mac)) {
+			int err = bcm47xx_increase_mac_addr(mac, mac_addr_used);
+
+			if (!err) {
+				ether_addr_copy(sprom->il0mac, mac);
+				mac_addr_used++;
+			}
+		}
+	}
+}
+
+static void bcm47xx_sprom_fill_board_data(struct ssb_sprom *sprom,
+					  const struct bcm47xx_sprom_fill *fill)
+{
+	nvram_read_u16(fill, NULL, "boardrev", &sprom->board_rev, 0);
+	nvram_read_u16(fill, NULL, "boardnum", &sprom->board_num, 0);
+	nvram_read_u16(fill, NULL, "boardtype", &sprom->board_type, 0);
+	nvram_read_u32_2(fill, "boardflags", &sprom->boardflags_lo,
+			 &sprom->boardflags_hi);
+	nvram_read_u32_2(fill, "boardflags2", &sprom->boardflags2_lo,
+			 &sprom->boardflags2_hi);
+}
+
+static void bcm47xx_sprom_fill(struct ssb_sprom *sprom,
+			       const struct bcm47xx_sprom_fill *fill)
+{
+	bcm47xx_sprom_fill_ethernet(sprom, fill);
+	bcm47xx_sprom_fill_board_data(sprom, fill);
+
+	nvram_read_u8(fill, NULL, "sromrev", &sprom->revision, 0);
+
+	switch (sprom->revision) {
+	case 1:
+		bcm47xx_sprom_fill_r1234589(sprom, fill);
+		bcm47xx_sprom_fill_r12389(sprom, fill);
+		bcm47xx_sprom_fill_r1(sprom, fill);
+		break;
+	case 2:
+		bcm47xx_sprom_fill_r1234589(sprom, fill);
+		bcm47xx_sprom_fill_r12389(sprom, fill);
+		bcm47xx_sprom_fill_r2389(sprom, fill);
+		break;
+	case 3:
+		bcm47xx_sprom_fill_r1234589(sprom, fill);
+		bcm47xx_sprom_fill_r12389(sprom, fill);
+		bcm47xx_sprom_fill_r2389(sprom, fill);
+		bcm47xx_sprom_fill_r389(sprom, fill);
+		bcm47xx_sprom_fill_r3(sprom, fill);
+		break;
+	case 4:
+	case 5:
+		bcm47xx_sprom_fill_r1234589(sprom, fill);
+		bcm47xx_sprom_fill_r4589(sprom, fill);
+		bcm47xx_sprom_fill_r458(sprom, fill);
+		bcm47xx_sprom_fill_r45(sprom, fill);
+		bcm47xx_sprom_fill_path_r4589(sprom, fill);
+		bcm47xx_sprom_fill_path_r45(sprom, fill);
+		break;
+	case 8:
+		bcm47xx_sprom_fill_r1234589(sprom, fill);
+		bcm47xx_sprom_fill_r12389(sprom, fill);
+		bcm47xx_sprom_fill_r2389(sprom, fill);
+		bcm47xx_sprom_fill_r389(sprom, fill);
+		bcm47xx_sprom_fill_r4589(sprom, fill);
+		bcm47xx_sprom_fill_r458(sprom, fill);
+		bcm47xx_sprom_fill_r89(sprom, fill);
+		bcm47xx_sprom_fill_path_r4589(sprom, fill);
+		break;
+	case 9:
+		bcm47xx_sprom_fill_r1234589(sprom, fill);
+		bcm47xx_sprom_fill_r12389(sprom, fill);
+		bcm47xx_sprom_fill_r2389(sprom, fill);
+		bcm47xx_sprom_fill_r389(sprom, fill);
+		bcm47xx_sprom_fill_r4589(sprom, fill);
+		bcm47xx_sprom_fill_r89(sprom, fill);
+		bcm47xx_sprom_fill_r9(sprom, fill);
+		bcm47xx_sprom_fill_path_r4589(sprom, fill);
+		break;
+	default:
+		pr_warn("Unsupported SPROM revision %d detected. Will extract v1\n",
+			sprom->revision);
+		sprom->revision = 1;
+		bcm47xx_sprom_fill_r1234589(sprom, fill);
+		bcm47xx_sprom_fill_r12389(sprom, fill);
+		bcm47xx_sprom_fill_r1(sprom, fill);
+	}
+}
+
+static int bcm47xx_sprom_getenv(const struct bcm47xx_sprom_fill *fill,
+				const char *name, char *val, size_t val_len)
+{
+	const struct platform_device *nvram_dev = fill->priv;
+
+	return bcm47xx_nvram_getenv(&nvram_dev->dev, name, val, val_len);
+};
+
+static int bcm47xx_sprom_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *np = dev->of_node;
+	struct ssb_sprom *sprom;
+	const __be32 *handle;
+	struct device_node *nvram_node;
+	struct platform_device *nvram_dev;
+	struct bcm47xx_sprom_fill fill;
+
+	/* Alloc */
+	sprom = devm_kzalloc(dev, sizeof(*sprom), GFP_KERNEL);
+	if (!sprom)
+		return -ENOMEM;
+
+	handle = of_get_property(np, "nvram", NULL);
+	if (!handle)
+		return -ENOMEM;
+
+	nvram_node = of_find_node_by_phandle(be32_to_cpup(handle));
+	if (!nvram_node)
+		return -ENOMEM;
+
+	nvram_dev = of_find_device_by_node(nvram_node);
+	if (!nvram_dev)
+		return -ENOMEM;
+
+	fill.prefix = of_get_property(np, "prefix", NULL);
+
+	fill.fallback = false;
+	fill.getenv = bcm47xx_sprom_getenv;
+	fill.priv = nvram_dev;
+
+	bcm47xx_sprom_fill(sprom, &fill);
+
+	platform_set_drvdata(pdev, sprom);
+
+	return 0;
+}
+
+static const struct of_device_id bcm47xx_sprom_of_match_table[] = {
+	{ .compatible = "brcm,bcm47xx-sprom", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, mvebu_pcie_of_match_table);
+
+static struct platform_driver bcm47xx_sprom_driver = {
+	.driver = {
+		.owner = THIS_MODULE,
+		.name = "bcm47xx-sprom",
+		.of_match_table = bcm47xx_sprom_of_match_table,
+		/* driver unloading/unbinding currently not supported */
+		.suppress_bind_attrs = true,
+	},
+	.probe = bcm47xx_sprom_probe,
+};
+module_platform_driver(bcm47xx_sprom_driver);
+
+MODULE_AUTHOR("Hauke Mehrtens <hauke@hauke-m.de>");
+MODULE_LICENSE("GPL v2");