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authorLinus Torvalds <torvalds@linux-foundation.org>2014-08-07 08:47:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-07 08:47:00 -0700
commite669830526a0abaf301bf408df69cde33901ac63 (patch)
tree0b6043375006d1754bbd1ab2370b0a0536546cc9 /drivers/mtd/nand
parentebb067d2f4e2db59b076f9c9cba0375a8ad1e07c (diff)
parent475d5928b79bb78326a645863d46ff95c5e25e5a (diff)
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle: "This is the main pull request for 3.17. It contains: - misc Cavium Octeon, BCM47xx, BCM63xx and Alchemy updates - MIPS ptrace updates and cleanups - various fixes that will also go to -stable - a number of cleanups and small non-critical fixes. - NUMA support for the Loongson 3. - more support for MSA - support for MAAR - various FP enhancements and fixes" * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (139 commits) MIPS: jz4740: remove unnecessary null test before debugfs_remove MIPS: Octeon: remove unnecessary null test before debugfs_remove_recursive MIPS: ZBOOT: implement stack protector in compressed boot phase MIPS: mipsreg: remove duplicate MIPS_CONF4_FTLBSETS_SHIFT MIPS: Bonito64: remove a duplicate define MIPS: Malta: initialise MAARs MIPS: Initialise MAARs MIPS: detect presence of MAARs MIPS: define MAAR register accessors & bits MIPS: mark MSA experimental MIPS: Don't build MSA support unless it can be used MIPS: consistently clear MSA flags when starting & copying threads MIPS: 16 byte align MSA vector context MIPS: disable preemption whilst initialising MSA MIPS: ensure MSA gets disabled during boot MIPS: fix read_msa_* & write_msa_* functions on non-MSA toolchains MIPS: fix MSA context for tasks which don't use FP first MIPS: init upper 64b of vector registers when MSA is first used MIPS: save/disable MSA in lose_fpu MIPS: preserve scalar FP CSR when switching vector context ...
Diffstat (limited to 'drivers/mtd/nand')
-rw-r--r--drivers/mtd/nand/au1550nd.c29
1 files changed, 13 insertions, 16 deletions
diff --git a/drivers/mtd/nand/au1550nd.c b/drivers/mtd/nand/au1550nd.c
index bc5c518828d2..77d6c17b38c2 100644
--- a/drivers/mtd/nand/au1550nd.c
+++ b/drivers/mtd/nand/au1550nd.c
@@ -41,7 +41,7 @@ static u_char au_read_byte(struct mtd_info *mtd)
{
struct nand_chip *this = mtd->priv;
u_char ret = readb(this->IO_ADDR_R);
- au_sync();
+ wmb(); /* drain writebuffer */
return ret;
}
@@ -56,7 +56,7 @@ static void au_write_byte(struct mtd_info *mtd, u_char byte)
{
struct nand_chip *this = mtd->priv;
writeb(byte, this->IO_ADDR_W);
- au_sync();
+ wmb(); /* drain writebuffer */
}
/**
@@ -69,7 +69,7 @@ static u_char au_read_byte16(struct mtd_info *mtd)
{
struct nand_chip *this = mtd->priv;
u_char ret = (u_char) cpu_to_le16(readw(this->IO_ADDR_R));
- au_sync();
+ wmb(); /* drain writebuffer */
return ret;
}
@@ -84,7 +84,7 @@ static void au_write_byte16(struct mtd_info *mtd, u_char byte)
{
struct nand_chip *this = mtd->priv;
writew(le16_to_cpu((u16) byte), this->IO_ADDR_W);
- au_sync();
+ wmb(); /* drain writebuffer */
}
/**
@@ -97,7 +97,7 @@ static u16 au_read_word(struct mtd_info *mtd)
{
struct nand_chip *this = mtd->priv;
u16 ret = readw(this->IO_ADDR_R);
- au_sync();
+ wmb(); /* drain writebuffer */
return ret;
}
@@ -116,7 +116,7 @@ static void au_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
for (i = 0; i < len; i++) {
writeb(buf[i], this->IO_ADDR_W);
- au_sync();
+ wmb(); /* drain writebuffer */
}
}
@@ -135,7 +135,7 @@ static void au_read_buf(struct mtd_info *mtd, u_char *buf, int len)
for (i = 0; i < len; i++) {
buf[i] = readb(this->IO_ADDR_R);
- au_sync();
+ wmb(); /* drain writebuffer */
}
}
@@ -156,7 +156,7 @@ static void au_write_buf16(struct mtd_info *mtd, const u_char *buf, int len)
for (i = 0; i < len; i++) {
writew(p[i], this->IO_ADDR_W);
- au_sync();
+ wmb(); /* drain writebuffer */
}
}
@@ -178,7 +178,7 @@ static void au_read_buf16(struct mtd_info *mtd, u_char *buf, int len)
for (i = 0; i < len; i++) {
p[i] = readw(this->IO_ADDR_R);
- au_sync();
+ wmb(); /* drain writebuffer */
}
}
@@ -223,26 +223,23 @@ static void au1550_hwcontrol(struct mtd_info *mtd, int cmd)
case NAND_CTL_SETNCE:
/* assert (force assert) chip enable */
- au_writel((1 << (4 + ctx->cs)), MEM_STNDCTL);
+ alchemy_wrsmem((1 << (4 + ctx->cs)), AU1000_MEM_STNDCTL);
break;
case NAND_CTL_CLRNCE:
/* deassert chip enable */
- au_writel(0, MEM_STNDCTL);
+ alchemy_wrsmem(0, AU1000_MEM_STNDCTL);
break;
}
this->IO_ADDR_R = this->IO_ADDR_W;
- /* Drain the writebuffer */
- au_sync();
+ wmb(); /* Drain the writebuffer */
}
int au1550_device_ready(struct mtd_info *mtd)
{
- int ret = (au_readl(MEM_STSTAT) & 0x1) ? 1 : 0;
- au_sync();
- return ret;
+ return (alchemy_rdsmem(AU1000_MEM_STSTAT) & 0x1) ? 1 : 0;
}
/**