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openwrtv3/target/linux/layerscape/patches-4.4/1094-mtd-spi-nor-stop-passing-around-retlen.patch
Yutang Jiang 15a14cf166 layerscape: add 64b/32b target for ls1012ardb device 
The QorIQ LS1012A processor, optimized for battery-backed or
USB-powered, integrates a single ARM Cortex-A53 core with a hardware
packet forwarding engine and high-speed interfaces to deliver
line-rate networking performance.
QorIQ LS1012A Reference Design System (LS1012ARDB) is a high-performance
development platform, with a complete debugging environment.
The LS1012ARDB board supports the QorIQ LS1012A processor and is
optimized to support the high-bandwidth DDR3L memory and
a full complement of high-speed SerDes ports.

LEDE/OPENWRT will auto strip executable program file while make. So we
need select CONFIG_NO_STRIP=y while make menuconfig to avoid the ppfe network
fiemware be destroyed, then run make to build ls1012ardb firmware.

The fsl-quadspi flash with jffs2 fs is unstable and arise some failed message.
This issue have noticed the IP owner for investigate, hope he can solve it
earlier. So the ls1012ardb now also provide a xx-firmware.ext4.bin as default
firmware, and the uboot bootcmd will run wrtboot_ext4rfs for "rootfstype=ext4"
bootargs.

Signed-off-by: Yutang Jiang <yutang.jiang@nxp.com>
2016-10-31 17:00:10 +01:00

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From a99477d72b500b48cb3614aad0ce096fe4e3f437 Mon Sep 17 00:00:00 2001
From: Michal Suchanek <hramrach@gmail.com>
Date: Wed, 2 Dec 2015 10:38:20 +0000
Subject: [PATCH 094/113] mtd: spi-nor: stop passing around retlen
[context adjustment]
not apply changes of drivers/mtd/devices/m25p80.c
#################
@@ -74,7 +74,7 @@ static int m25p80_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len)
}
static ssize_t m25p80_write(struct spi_nor *nor, loff_t to, size_t len,
- size_t *retlen, const u_char *buf)
+ const u_char *buf)
{
struct m25p *flash = nor->priv;
struct spi_device *spi = flash->spi;
@@ -106,7 +106,6 @@ static ssize_t m25p80_write(struct spi_nor *nor, loff_t to, size_t len,
ret = m.actual_length - cmd_sz;
if (ret < 0)
return -EIO;
- *retlen += ret;
return ret;
}
@@ -127,7 +126,7 @@ static inline unsigned int m25p80_rx_nbits(struct spi_nor *nor)
* may be any size provided it is within the physical boundaries.
*/
static ssize_t m25p80_read(struct spi_nor *nor, loff_t from, size_t len,
- size_t *retlen, u_char *buf)
+ u_char *buf)
{
struct m25p *flash = nor->priv;
struct spi_device *spi = flash->spi;
@@ -161,7 +160,6 @@ static ssize_t m25p80_read(struct spi_nor *nor, loff_t from, size_t len,
ret = m.actual_length - m25p_cmdsz(nor) - dummy;
if (ret < 0)
return -EIO;
- *retlen += ret;
return ret;
}
#################
Do not pass retlen to hardware driver read/write functions. Update it in
spi-nor generic driver instead.
Signed-off-by: Michal Suchanek <hramrach@gmail.com>
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@freescale.com>
Integrated-by: Jiang Yutang <yutang.jiang@nxp.com>
---
drivers/mtd/spi-nor/fsl-quadspi.c | 16 ++++++----------
drivers/mtd/spi-nor/spi-nor.c | 21 +++++++++++++--------
include/linux/mtd/spi-nor.h | 4 ++--
3 files changed, 21 insertions(+), 20 deletions(-)
--- a/drivers/mtd/spi-nor/fsl-quadspi.c
+++ b/drivers/mtd/spi-nor/fsl-quadspi.c
@@ -620,7 +620,7 @@ static inline void fsl_qspi_invalid(stru
static ssize_t fsl_qspi_nor_write(struct fsl_qspi *q, struct spi_nor *nor,
u8 opcode, unsigned int to, u32 *txbuf,
- unsigned count, size_t *retlen)
+ unsigned count)
{
int ret, i, j;
u32 tmp;
@@ -647,11 +647,8 @@ static ssize_t fsl_qspi_nor_write(struct
/* Trigger it */
ret = fsl_qspi_runcmd(q, opcode, to, count);
- if (ret == 0) {
- if (retlen)
- *retlen += count;
+ if (ret == 0)
return count;
- }
return ret;
}
@@ -862,7 +859,7 @@ static int fsl_qspi_write_reg(struct spi
} else if (len > 0) {
ret = fsl_qspi_nor_write(q, nor, opcode, 0,
- (u32 *)buf, len, NULL);
+ (u32 *)buf, len);
if (ret > 0)
return 0;
} else {
@@ -874,12 +871,11 @@ static int fsl_qspi_write_reg(struct spi
}
static ssize_t fsl_qspi_write(struct spi_nor *nor, loff_t to,
- size_t len, size_t *retlen, const u_char *buf)
+ size_t len, const u_char *buf)
{
struct fsl_qspi *q = nor->priv;
-
ssize_t ret = fsl_qspi_nor_write(q, nor, nor->program_opcode, to,
- (u32 *)buf, len, retlen);
+ (u32 *)buf, len);
/* invalid the data in the AHB buffer. */
fsl_qspi_invalid(q);
@@ -887,7 +883,7 @@ static ssize_t fsl_qspi_write(struct spi
}
static ssize_t fsl_qspi_read(struct spi_nor *nor, loff_t from,
- size_t len, size_t *retlen, u_char *buf)
+ size_t len, u_char *buf)
{
struct fsl_qspi *q = nor->priv;
u8 cmd = nor->read_opcode;
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -919,12 +919,13 @@ static int spi_nor_read(struct mtd_info
if (ret)
return ret;
- ret = nor->read(nor, from, len, retlen, buf);
+ ret = nor->read(nor, from, len, buf);
spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_READ);
if (ret < 0)
return ret;
+ *retlen += ret;
return 0;
}
@@ -951,7 +952,7 @@ static int sst_write(struct mtd_info *mt
nor->program_opcode = SPINOR_OP_BP;
/* write one byte. */
- ret = nor->write(nor, to, 1, retlen, buf);
+ ret = nor->write(nor, to, 1, buf);
if (ret < 0)
goto sst_write_err;
WARN(ret != 1, "While writing 1 byte written %i bytes\n",
@@ -967,7 +968,7 @@ static int sst_write(struct mtd_info *mt
nor->program_opcode = SPINOR_OP_AAI_WP;
/* write two bytes. */
- ret = nor->write(nor, to, 2, retlen, buf + actual);
+ ret = nor->write(nor, to, 2, buf + actual);
if (ret < 0)
goto sst_write_err;
WARN(ret != 2, "While writing 2 bytes written %i bytes\n",
@@ -990,7 +991,7 @@ static int sst_write(struct mtd_info *mt
write_enable(nor);
nor->program_opcode = SPINOR_OP_BP;
- ret = nor->write(nor, to, 1, retlen, buf + actual);
+ ret = nor->write(nor, to, 1, buf + actual);
if (ret < 0)
goto sst_write_err;
WARN(ret != 1, "While writing 1 byte written %i bytes\n",
@@ -999,8 +1000,10 @@ static int sst_write(struct mtd_info *mt
if (ret)
goto sst_write_err;
write_disable(nor);
+ actual += 1;
}
sst_write_err:
+ *retlen += actual;
spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_WRITE);
return ret;
}
@@ -1029,15 +1032,17 @@ static int spi_nor_write(struct mtd_info
/* do all the bytes fit onto one page? */
if (page_offset + len <= nor->page_size) {
- ret = nor->write(nor, to, len, retlen, buf);
+ ret = nor->write(nor, to, len, buf);
if (ret < 0)
goto write_err;
+ *retlen += ret;
} else {
/* the size of data remaining on the first page */
page_size = nor->page_size - page_offset;
- ret = nor->write(nor, to, page_size, retlen, buf);
+ ret = nor->write(nor, to, page_size, buf);
if (ret < 0)
goto write_err;
+ *retlen += ret;
/* write everything in nor->page_size chunks */
for (i = ret; i < len; ) {
@@ -1051,10 +1056,10 @@ static int spi_nor_write(struct mtd_info
write_enable(nor);
- ret = nor->write(nor, to + i, page_size, retlen,
- buf + i);
+ ret = nor->write(nor, to + i, page_size, buf + i);
if (ret < 0)
goto write_err;
+ *retlen += ret;
i += ret;
}
}
--- a/include/linux/mtd/spi-nor.h
+++ b/include/linux/mtd/spi-nor.h
@@ -171,9 +171,9 @@ struct spi_nor {
int (*write_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len);
ssize_t (*read)(struct spi_nor *nor, loff_t from,
- size_t len, size_t *retlen, u_char *read_buf);
+ size_t len, u_char *read_buf);
ssize_t (*write)(struct spi_nor *nor, loff_t to,
- size_t len, size_t *retlen, const u_char *write_buf);
+ size_t len, const u_char *write_buf);
int (*erase)(struct spi_nor *nor, loff_t offs);
int (*flash_lock)(struct spi_nor *nor, loff_t ofs, uint64_t len);
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