aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/brcm47xx/patches-3.18/031-12-MIPS-BCM47xx-Add-generic-function-filling-SPROM-entr.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/brcm47xx/patches-3.18/031-12-MIPS-BCM47xx-Add-generic-function-filling-SPROM-entr.patch')
-rw-r--r--target/linux/brcm47xx/patches-3.18/031-12-MIPS-BCM47xx-Add-generic-function-filling-SPROM-entr.patch85
1 files changed, 85 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.18/031-12-MIPS-BCM47xx-Add-generic-function-filling-SPROM-entr.patch b/target/linux/brcm47xx/patches-3.18/031-12-MIPS-BCM47xx-Add-generic-function-filling-SPROM-entr.patch
new file mode 100644
index 0000000000..eb994facff
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.18/031-12-MIPS-BCM47xx-Add-generic-function-filling-SPROM-entr.patch
@@ -0,0 +1,85 @@
+From d55a52ccf8f80cdf51af2c5c6e56c825f98c4f85 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Thu, 2 Apr 2015 09:13:49 +0200
+Subject: [PATCH] MIPS: BCM47xx: Add generic function filling SPROM entries
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Handling many SPROM revisions became messy, we have tons of functions
+specific to various revision groups which are quite hard to track.
+For years there is yet another revision 11 asking for support, but
+adding it in current the form would make things even worse.
+To resolve this problem let's add new function with table-like entries
+that will contain revision bitmask for every SPROM variable.
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+Cc: linux-mips@linux-mips.org
+Cc: Hauke Mehrtens <hauke@hauke-m.de>
+Cc: Jonas Gorski <jonas.gorski@gmail.com>
+Patchwork: https://patchwork.linux-mips.org/patch/9659/
+Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
+---
+ arch/mips/bcm47xx/sprom.c | 32 +++++++++++++++++++++++++++++---
+ 1 file changed, 29 insertions(+), 3 deletions(-)
+
+diff --git a/arch/mips/bcm47xx/sprom.c b/arch/mips/bcm47xx/sprom.c
+index 5d32afc..77790c9 100644
+--- a/arch/mips/bcm47xx/sprom.c
++++ b/arch/mips/bcm47xx/sprom.c
+@@ -180,6 +180,33 @@ static void nvram_read_alpha2(const char *prefix, const char *name,
+ memcpy(val, buf, 2);
+ }
+
++/* This is one-function-only macro, it uses local "sprom" variable! */
++#define ENTRY(_revmask, _type, _prefix, _name, _val, _allset, _fallback) \
++ if (_revmask & BIT(sprom->revision)) \
++ nvram_read_ ## _type(_prefix, NULL, _name, &sprom->_val, \
++ _allset, _fallback)
++/*
++ * Special version of filling function that can be safely called for any SPROM
++ * revision. For every NVRAM to SPROM mapping it contains bitmask of revisions
++ * for which the mapping is valid.
++ * It obviously requires some hexadecimal/bitmasks knowledge, but allows
++ * writing cleaner code (easy revisions handling).
++ * Note that while SPROM revision 0 was never used, we still keep BIT(0)
++ * reserved for it, just to keep numbering sane.
++ */
++static void bcm47xx_sprom_fill_auto(struct ssb_sprom *sprom,
++ const char *prefix, bool fallback)
++{
++ const char *pre = prefix;
++ bool fb = fallback;
++
++ ENTRY(0xfffffffe, u16, pre, "boardrev", board_rev, 0, true);
++ ENTRY(0xfffffffe, u16, pre, "boardnum", board_num, 0, fb);
++
++ /* TODO: Move more mappings here */
++}
++#undef ENTRY /* It's specififc, uses local variable, don't use it (again). */
++
+ static void bcm47xx_fill_sprom_r1234589(struct ssb_sprom *sprom,
+ const char *prefix, bool fallback)
+ {
+@@ -714,9 +741,6 @@ static void bcm47xx_fill_sprom_ethernet(struct ssb_sprom *sprom,
+ static void bcm47xx_fill_board_data(struct ssb_sprom *sprom, const char *prefix,
+ bool fallback)
+ {
+- nvram_read_u16(prefix, NULL, "boardrev", &sprom->board_rev, 0, true);
+- nvram_read_u16(prefix, NULL, "boardnum", &sprom->board_num, 0,
+- fallback);
+ nvram_read_u16(prefix, NULL, "boardtype", &sprom->board_type, 0, true);
+ nvram_read_u32_2(prefix, "boardflags", &sprom->boardflags_lo,
+ &sprom->boardflags_hi, fallback);
+@@ -787,6 +811,8 @@ void bcm47xx_fill_sprom(struct ssb_sprom *sprom, const char *prefix,
+ bcm47xx_fill_sprom_r12389(sprom, prefix, fallback);
+ bcm47xx_fill_sprom_r1(sprom, prefix, fallback);
+ }
++
++ bcm47xx_sprom_fill_auto(sprom, prefix, fallback);
+ }
+
+ #ifdef CONFIG_BCM47XX_SSB
+--
+1.8.4.5
+