[PATCH v4 00/32] mtd: spi-nor: move vendor specific code into vendor modules

[PATCH v4 00/32] mtd: spi-nor: move vendor specific code into vendor modules

[Michael Walle]

It turns out that most of the special status register handling is
specific for a particular vendor. I.e. Xilinx has some different
opcodes for the status register read, Micron has an additional FSR
register and Spansion has these flags integrated into the SR.

Create a callback to ready() where a flash chip can register its
own function. This will let us move all the vendor specific stuff
out of the core into the vendor modules.

As a preparation step, unify all function and object names in the
vendor modules. For the sake of consistency and better readability
of the code flow, I also converted the setup() callback to be
optional.

Please note that this is only compile-time tested.

Changes since v3:
 - fix spansion.c compilation, messed up the patch export. Sorry
   for the noise

Changes since v2:
 - use family_nor_ instead of just family_ prefix
 - fix function doc

Changes since v1:
 - rename/unify function names inside the vendor modules.
 - make local functions static
 - fix function doc typo
 - use late_init hook to set fsr_ready op
 - Use uppercase and period in comments
 - Add comments for the vendor flags
 - move coding style change in spi_nor_sr_ready() into own patch
 - new patch to add missing parenthesis in S3AN_INFO()
 - add missing function prefix rename patch for the spansion module

Michael Walle (32):
  mtd: spi-nor: atmel: unify function names
  mtd: spi-nor: catalyst: unify function names
  mtd: spi-nor: eon: unify function names
  mtd: spi-nor: esmt: unify function names
  mtd: spi-nor: everspin: unify function names
  mtd: spi-nor: fujitsu: unify function names
  mtd: spi-nor: gigadevice: unify function names
  mtd: spi-nor: intel: unify function names
  mtd: spi-nor: issi: unify function names
  mtd: spi-nor: macronix: unify function names
  mtd: spi-nor: micron-st: unify function names
  mtd: spi-nor: spansion: unify function names
  mtd: spi-nor: sst: unify function names
  mtd: spi-nor: winbond: unify function names
  mtd: spi-nor: xilinx: unify function names
  mtd: spi-nor: xmc: unify function names
  mtd: spi-nor: slightly refactor the spi_nor_setup()
  mtd: spi-nor: allow a flash to define its own ready() function
  mtd: spi-nor: export more function to be used in vendor modules
  mtd: spi-nor: guard _page_size parameter in S3AN_INFO()
  mtd: spi-nor: move all xilinx specifics into xilinx.c
  mtd: spi-nor: xilinx: rename vendor specific functions and defines
  mtd: spi-nor: xilinx: correct the debug message
  mtd: spi-nor: move all micron-st specifics into micron-st.c
  mtd: spi-nor: micron-st: convert USE_FSR to a manufacturer flag
  mtd: spi-nor: micron-st: rename vendor specific functions and defines
  mtd: spi-nor: spansion: slightly rework control flow in late_init()
  mtd: spi-nor: move all spansion specifics into spansion.c
  mtd: spi-nor: spansion: convert USE_CLSR to a manufacturer flag
  mtd: spi-nor: spansion: rename vendor specific functions and defines
  mtd: spi-nor: slightly change code style in spi_nor_sr_ready()
  mtd: spi-nor: renumber flags

 drivers/mtd/spi-nor/atmel.c      |  81 +++++-----
 drivers/mtd/spi-nor/catalyst.c   |   6 +-
 drivers/mtd/spi-nor/core.c       | 265 ++-----------------------------
 drivers/mtd/spi-nor/core.h       |  70 ++++----
 drivers/mtd/spi-nor/eon.c        |   6 +-
 drivers/mtd/spi-nor/esmt.c       |   6 +-
 drivers/mtd/spi-nor/everspin.c   |   6 +-
 drivers/mtd/spi-nor/fujitsu.c    |   6 +-
 drivers/mtd/spi-nor/gigadevice.c |   6 +-
 drivers/mtd/spi-nor/intel.c      |   6 +-
 drivers/mtd/spi-nor/issi.c       |  10 +-
 drivers/mtd/spi-nor/macronix.c   |  14 +-
 drivers/mtd/spi-nor/micron-st.c  | 258 ++++++++++++++++++++++++------
 drivers/mtd/spi-nor/spansion.c   | 168 +++++++++++++++-----
 drivers/mtd/spi-nor/sst.c        |  44 ++---
 drivers/mtd/spi-nor/winbond.c    |  29 ++--
 drivers/mtd/spi-nor/xilinx.c     |  97 +++++++++--
 drivers/mtd/spi-nor/xmc.c        |   6 +-
 include/linux/mtd/spi-nor.h      |  18 ---
 19 files changed, 578 insertions(+), 524 deletions(-)

-- 
2.30.2

[PATCH v4 01/32] mtd: spi-nor: atmel: unify function names

[Michael Walle]

To avoid name clashes unify all the function and static object names and
use one of the following prefixes which should be sufficiently unique:
 - <vendor>_nor_
 - <flash_family>_nor_
 - <flash_part>_

There are no functional changes.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/atmel.c | 81 +++++++++++++++++++------------------
 1 file changed, 42 insertions(+), 39 deletions(-)

diff --git a/drivers/mtd/spi-nor/atmel.c b/drivers/mtd/spi-nor/atmel.c
index d6d889ce8876..656dd80a0be7 100644
--- a/drivers/mtd/spi-nor/atmel.c
+++ b/drivers/mtd/spi-nor/atmel.c
@@ -16,12 +16,12 @@
  * is to unlock the whole flash array on startup. Therefore, we have to support
  * exactly this operation.
  */
-static int atmel_at25fs_lock(struct spi_nor *nor, loff_t ofs, uint64_t len)
+static int at25fs_nor_lock(struct spi_nor *nor, loff_t ofs, uint64_t len)
 {
 	return -EOPNOTSUPP;
 }
 
-static int atmel_at25fs_unlock(struct spi_nor *nor, loff_t ofs, uint64_t len)
+static int at25fs_nor_unlock(struct spi_nor *nor, loff_t ofs, uint64_t len)
 {
 	int ret;
 
@@ -37,28 +37,28 @@ static int atmel_at25fs_unlock(struct spi_nor *nor, loff_t ofs, uint64_t len)
 	return ret;
 }
 
-static int atmel_at25fs_is_locked(struct spi_nor *nor, loff_t ofs, uint64_t len)
+static int at25fs_nor_is_locked(struct spi_nor *nor, loff_t ofs, uint64_t len)
 {
 	return -EOPNOTSUPP;
 }
 
-static const struct spi_nor_locking_ops atmel_at25fs_locking_ops = {
-	.lock = atmel_at25fs_lock,
-	.unlock = atmel_at25fs_unlock,
-	.is_locked = atmel_at25fs_is_locked,
+static const struct spi_nor_locking_ops at25fs_nor_locking_ops = {
+	.lock = at25fs_nor_lock,
+	.unlock = at25fs_nor_unlock,
+	.is_locked = at25fs_nor_is_locked,
 };
 
-static void atmel_at25fs_late_init(struct spi_nor *nor)
+static void at25fs_nor_late_init(struct spi_nor *nor)
 {
-	nor->params->locking_ops = &atmel_at25fs_locking_ops;
+	nor->params->locking_ops = &at25fs_nor_locking_ops;
 }
 
-static const struct spi_nor_fixups atmel_at25fs_fixups = {
-	.late_init = atmel_at25fs_late_init,
+static const struct spi_nor_fixups at25fs_nor_fixups = {
+	.late_init = at25fs_nor_late_init,
 };
 
 /**
- * atmel_set_global_protection - Do a Global Protect or Unprotect command
+ * atmel_nor_set_global_protection - Do a Global Protect or Unprotect command
  * @nor:	pointer to 'struct spi_nor'
  * @ofs:	offset in bytes
  * @len:	len in bytes
@@ -66,8 +66,8 @@ static const struct spi_nor_fixups atmel_at25fs_fixups = {
  *
  * Return: 0 on success, -error otherwise.
  */
-static int atmel_set_global_protection(struct spi_nor *nor, loff_t ofs,
-				       uint64_t len, bool is_protect)
+static int atmel_nor_set_global_protection(struct spi_nor *nor, loff_t ofs,
+					   uint64_t len, bool is_protect)
 {
 	int ret;
 	u8 sr;
@@ -116,17 +116,20 @@ static int atmel_set_global_protection(struct spi_nor *nor, loff_t ofs,
 	return spi_nor_write_sr(nor, nor->bouncebuf, 1);
 }
 
-static int atmel_global_protect(struct spi_nor *nor, loff_t ofs, uint64_t len)
+static int atmel_nor_global_protect(struct spi_nor *nor, loff_t ofs,
+				    uint64_t len)
 {
-	return atmel_set_global_protection(nor, ofs, len, true);
+	return atmel_nor_set_global_protection(nor, ofs, len, true);
 }
 
-static int atmel_global_unprotect(struct spi_nor *nor, loff_t ofs, uint64_t len)
+static int atmel_nor_global_unprotect(struct spi_nor *nor, loff_t ofs,
+				      uint64_t len)
 {
-	return atmel_set_global_protection(nor, ofs, len, false);
+	return atmel_nor_set_global_protection(nor, ofs, len, false);
 }
 
-static int atmel_is_global_protected(struct spi_nor *nor, loff_t ofs, uint64_t len)
+static int atmel_nor_is_global_protected(struct spi_nor *nor, loff_t ofs,
+					 uint64_t len)
 {
 	int ret;
 
@@ -140,47 +143,47 @@ static int atmel_is_global_protected(struct spi_nor *nor, loff_t ofs, uint64_t l
 	return ((nor->bouncebuf[0] & ATMEL_SR_GLOBAL_PROTECT_MASK) == ATMEL_SR_GLOBAL_PROTECT_MASK);
 }
 
-static const struct spi_nor_locking_ops atmel_global_protection_ops = {
-	.lock = atmel_global_protect,
-	.unlock = atmel_global_unprotect,
-	.is_locked = atmel_is_global_protected,
+static const struct spi_nor_locking_ops atmel_nor_global_protection_ops = {
+	.lock = atmel_nor_global_protect,
+	.unlock = atmel_nor_global_unprotect,
+	.is_locked = atmel_nor_is_global_protected,
 };
 
-static void atmel_global_protection_late_init(struct spi_nor *nor)
+static void atmel_nor_global_protection_late_init(struct spi_nor *nor)
 {
-	nor->params->locking_ops = &atmel_global_protection_ops;
+	nor->params->locking_ops = &atmel_nor_global_protection_ops;
 }
 
-static const struct spi_nor_fixups atmel_global_protection_fixups = {
-	.late_init = atmel_global_protection_late_init,
+static const struct spi_nor_fixups atmel_nor_global_protection_fixups = {
+	.late_init = atmel_nor_global_protection_late_init,
 };
 
-static const struct flash_info atmel_parts[] = {
+static const struct flash_info atmel_nor_parts[] = {
 	/* Atmel -- some are (confusingly) marketed as "DataFlash" */
 	{ "at25fs010",  INFO(0x1f6601, 0, 32 * 1024,   4)
 		FLAGS(SPI_NOR_HAS_LOCK)
 		NO_SFDP_FLAGS(SECT_4K)
-		.fixups = &atmel_at25fs_fixups },
+		.fixups = &at25fs_nor_fixups },
 	{ "at25fs040",  INFO(0x1f6604, 0, 64 * 1024,   8)
 		FLAGS(SPI_NOR_HAS_LOCK)
 		NO_SFDP_FLAGS(SECT_4K)
-		.fixups = &atmel_at25fs_fixups },
+		.fixups = &at25fs_nor_fixups },
 	{ "at25df041a", INFO(0x1f4401, 0, 64 * 1024,   8)
 		FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_SWP_IS_VOLATILE)
 		NO_SFDP_FLAGS(SECT_4K)
-		.fixups = &atmel_global_protection_fixups },
+		.fixups = &atmel_nor_global_protection_fixups },
 	{ "at25df321",  INFO(0x1f4700, 0, 64 * 1024,  64)
 		FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_SWP_IS_VOLATILE)
 		NO_SFDP_FLAGS(SECT_4K)
-		.fixups = &atmel_global_protection_fixups },
+		.fixups = &atmel_nor_global_protection_fixups },
 	{ "at25df321a", INFO(0x1f4701, 0, 64 * 1024,  64)
 		FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_SWP_IS_VOLATILE)
 		NO_SFDP_FLAGS(SECT_4K)
-		.fixups = &atmel_global_protection_fixups },
+		.fixups = &atmel_nor_global_protection_fixups },
 	{ "at25df641",  INFO(0x1f4800, 0, 64 * 1024, 128)
 		FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_SWP_IS_VOLATILE)
 		NO_SFDP_FLAGS(SECT_4K)
-		.fixups = &atmel_global_protection_fixups },
+		.fixups = &atmel_nor_global_protection_fixups },
 	{ "at25sl321",	INFO(0x1f4216, 0, 64 * 1024, 64)
 		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
 	{ "at26f004",   INFO(0x1f0400, 0, 64 * 1024,  8)
@@ -188,21 +191,21 @@ static const struct flash_info atmel_parts[] = {
 	{ "at26df081a", INFO(0x1f4501, 0, 64 * 1024, 16)
 		FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_SWP_IS_VOLATILE)
 		NO_SFDP_FLAGS(SECT_4K)
-		.fixups = &atmel_global_protection_fixups },
+		.fixups = &atmel_nor_global_protection_fixups },
 	{ "at26df161a", INFO(0x1f4601, 0, 64 * 1024, 32)
 		FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_SWP_IS_VOLATILE)
 		NO_SFDP_FLAGS(SECT_4K)
-		.fixups = &atmel_global_protection_fixups },
+		.fixups = &atmel_nor_global_protection_fixups },
 	{ "at26df321",  INFO(0x1f4700, 0, 64 * 1024, 64)
 		FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_SWP_IS_VOLATILE)
 		NO_SFDP_FLAGS(SECT_4K)
-		.fixups = &atmel_global_protection_fixups },
+		.fixups = &atmel_nor_global_protection_fixups },
 	{ "at45db081d", INFO(0x1f2500, 0, 64 * 1024, 16)
 		NO_SFDP_FLAGS(SECT_4K) },
 };
 
 const struct spi_nor_manufacturer spi_nor_atmel = {
 	.name = "atmel",
-	.parts = atmel_parts,
-	.nparts = ARRAY_SIZE(atmel_parts),
+	.parts = atmel_nor_parts,
+	.nparts = ARRAY_SIZE(atmel_nor_parts),
 };
-- 
2.30.2

[PATCH v4 02/32] mtd: spi-nor: catalyst: unify function names

[Michael Walle]

To avoid name clashes unify all the function and static object names and
use one of the following prefixes which should be sufficiently unique:
 - <vendor>_nor_
 - <flash_family>_nor_
 - <flash_part>_

There are no functional changes.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/catalyst.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/mtd/spi-nor/catalyst.c b/drivers/mtd/spi-nor/catalyst.c
index ae4d67e01bb3..6d310815fb12 100644
--- a/drivers/mtd/spi-nor/catalyst.c
+++ b/drivers/mtd/spi-nor/catalyst.c
@@ -8,7 +8,7 @@
 
 #include "core.h"
 
-static const struct flash_info catalyst_parts[] = {
+static const struct flash_info catalyst_nor_parts[] = {
 	/* Catalyst / On Semiconductor -- non-JEDEC */
 	{ "cat25c11", CAT25_INFO(16, 8, 16, 1) },
 	{ "cat25c03", CAT25_INFO(32, 8, 16, 2) },
@@ -19,6 +19,6 @@ static const struct flash_info catalyst_parts[] = {
 
 const struct spi_nor_manufacturer spi_nor_catalyst = {
 	.name = "catalyst",
-	.parts = catalyst_parts,
-	.nparts = ARRAY_SIZE(catalyst_parts),
+	.parts = catalyst_nor_parts,
+	.nparts = ARRAY_SIZE(catalyst_nor_parts),
 };
-- 
2.30.2

[PATCH v4 03/32] mtd: spi-nor: eon: unify function names

[Michael Walle]

To avoid name clashes unify all the function and static object names and
use one of the following prefixes which should be sufficiently unique:
 - <vendor>_nor_
 - <flash_family>_nor_
 - <flash_part>_

There are no functional changes.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/eon.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/mtd/spi-nor/eon.c b/drivers/mtd/spi-nor/eon.c
index 4f3ee6331f37..8c1c57530281 100644
--- a/drivers/mtd/spi-nor/eon.c
+++ b/drivers/mtd/spi-nor/eon.c
@@ -8,7 +8,7 @@
 
 #include "core.h"
 
-static const struct flash_info eon_parts[] = {
+static const struct flash_info eon_nor_parts[] = {
 	/* EON -- en25xxx */
 	{ "en25f32",    INFO(0x1c3116, 0, 64 * 1024,   64)
 		NO_SFDP_FLAGS(SECT_4K) },
@@ -32,6 +32,6 @@ static const struct flash_info eon_parts[] = {
 
 const struct spi_nor_manufacturer spi_nor_eon = {
 	.name = "eon",
-	.parts = eon_parts,
-	.nparts = ARRAY_SIZE(eon_parts),
+	.parts = eon_nor_parts,
+	.nparts = ARRAY_SIZE(eon_nor_parts),
 };
-- 
2.30.2

[PATCH v4 04/32] mtd: spi-nor: esmt: unify function names

[Michael Walle]

To avoid name clashes unify all the function and static object names and
use one of the following prefixes which should be sufficiently unique:
 - <vendor>_nor_
 - <flash_family>_nor_
 - <flash_part>_

There are no functional changes.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/esmt.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/mtd/spi-nor/esmt.c b/drivers/mtd/spi-nor/esmt.c
index ace1da221566..79e2408f4998 100644
--- a/drivers/mtd/spi-nor/esmt.c
+++ b/drivers/mtd/spi-nor/esmt.c
@@ -8,7 +8,7 @@
 
 #include "core.h"
 
-static const struct flash_info esmt_parts[] = {
+static const struct flash_info esmt_nor_parts[] = {
 	/* ESMT */
 	{ "f25l32pa", INFO(0x8c2016, 0, 64 * 1024, 64)
 		FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_SWP_IS_VOLATILE)
@@ -23,6 +23,6 @@ static const struct flash_info esmt_parts[] = {
 
 const struct spi_nor_manufacturer spi_nor_esmt = {
 	.name = "esmt",
-	.parts = esmt_parts,
-	.nparts = ARRAY_SIZE(esmt_parts),
+	.parts = esmt_nor_parts,
+	.nparts = ARRAY_SIZE(esmt_nor_parts),
 };
-- 
2.30.2

[PATCH v4 05/32] mtd: spi-nor: everspin: unify function names

[Michael Walle]

To avoid name clashes unify all the function and static object names and
use one of the following prefixes which should be sufficiently unique:
 - <vendor>_nor_
 - <flash_family>_nor_
 - <flash_part>_

There are no functional changes.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/everspin.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/mtd/spi-nor/everspin.c b/drivers/mtd/spi-nor/everspin.c
index f6c6fb36a428..84a07c2e0536 100644
--- a/drivers/mtd/spi-nor/everspin.c
+++ b/drivers/mtd/spi-nor/everspin.c
@@ -8,7 +8,7 @@
 
 #include "core.h"
 
-static const struct flash_info everspin_parts[] = {
+static const struct flash_info everspin_nor_parts[] = {
 	/* Everspin */
 	{ "mr25h128", CAT25_INFO(16 * 1024, 1, 256, 2) },
 	{ "mr25h256", CAT25_INFO(32 * 1024, 1, 256, 2) },
@@ -18,6 +18,6 @@ static const struct flash_info everspin_parts[] = {
 
 const struct spi_nor_manufacturer spi_nor_everspin = {
 	.name = "everspin",
-	.parts = everspin_parts,
-	.nparts = ARRAY_SIZE(everspin_parts),
+	.parts = everspin_nor_parts,
+	.nparts = ARRAY_SIZE(everspin_nor_parts),
 };
-- 
2.30.2

[PATCH v4 06/32] mtd: spi-nor: fujitsu: unify function names

[Michael Walle]

To avoid name clashes unify all the function and static object names and
use one of the following prefixes which should be sufficiently unique:
 - <vendor>_nor_
 - <flash_family>_nor_
 - <flash_part>_

There are no functional changes.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/fujitsu.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/mtd/spi-nor/fujitsu.c b/drivers/mtd/spi-nor/fujitsu.c
index 5fa8f04f2e35..69cffc5c73ef 100644
--- a/drivers/mtd/spi-nor/fujitsu.c
+++ b/drivers/mtd/spi-nor/fujitsu.c
@@ -8,7 +8,7 @@
 
 #include "core.h"
 
-static const struct flash_info fujitsu_parts[] = {
+static const struct flash_info fujitsu_nor_parts[] = {
 	/* Fujitsu */
 	{ "mb85rs1mt", INFO(0x047f27, 0, 128 * 1024, 1)
 		FLAGS(SPI_NOR_NO_ERASE) },
@@ -16,6 +16,6 @@ static const struct flash_info fujitsu_parts[] = {
 
 const struct spi_nor_manufacturer spi_nor_fujitsu = {
 	.name = "fujitsu",
-	.parts = fujitsu_parts,
-	.nparts = ARRAY_SIZE(fujitsu_parts),
+	.parts = fujitsu_nor_parts,
+	.nparts = ARRAY_SIZE(fujitsu_nor_parts),
 };
-- 
2.30.2

[PATCH v4 07/32] mtd: spi-nor: gigadevice: unify function names

[Michael Walle]

To avoid name clashes unify all the function and static object names and
use one of the following prefixes which should be sufficiently unique:
 - <vendor>_nor_
 - <flash_family>_nor_
 - <flash_part>_

There are no functional changes.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/gigadevice.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/mtd/spi-nor/gigadevice.c b/drivers/mtd/spi-nor/gigadevice.c
index 0807d0263808..119b38e6fc2a 100644
--- a/drivers/mtd/spi-nor/gigadevice.c
+++ b/drivers/mtd/spi-nor/gigadevice.c
@@ -23,7 +23,7 @@ static const struct spi_nor_fixups gd25q256_fixups = {
 	.default_init = gd25q256_default_init,
 };
 
-static const struct flash_info gigadevice_parts[] = {
+static const struct flash_info gigadevice_nor_parts[] = {
 	{ "gd25q16", INFO(0xc84015, 0, 64 * 1024,  32)
 		FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
 		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
@@ -61,6 +61,6 @@ static const struct flash_info gigadevice_parts[] = {
 
 const struct spi_nor_manufacturer spi_nor_gigadevice = {
 	.name = "gigadevice",
-	.parts = gigadevice_parts,
-	.nparts = ARRAY_SIZE(gigadevice_parts),
+	.parts = gigadevice_nor_parts,
+	.nparts = ARRAY_SIZE(gigadevice_nor_parts),
 };
-- 
2.30.2

[PATCH v4 08/32] mtd: spi-nor: intel: unify function names

[Michael Walle]

To avoid name clashes unify all the function and static object names and
use one of the following prefixes which should be sufficiently unique:
 - <vendor>_nor_
 - <flash_family>_nor_
 - <flash_part>_

There are no functional changes.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/intel.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/mtd/spi-nor/intel.c b/drivers/mtd/spi-nor/intel.c
index d64e114e9fb4..9179f2d09cba 100644
--- a/drivers/mtd/spi-nor/intel.c
+++ b/drivers/mtd/spi-nor/intel.c
@@ -8,7 +8,7 @@
 
 #include "core.h"
 
-static const struct flash_info intel_parts[] = {
+static const struct flash_info intel_nor_parts[] = {
 	/* Intel/Numonyx -- xxxs33b */
 	{ "160s33b",  INFO(0x898911, 0, 64 * 1024,  32)
 		FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_SWP_IS_VOLATILE) },
@@ -20,6 +20,6 @@ static const struct flash_info intel_parts[] = {
 
 const struct spi_nor_manufacturer spi_nor_intel = {
 	.name = "intel",
-	.parts = intel_parts,
-	.nparts = ARRAY_SIZE(intel_parts),
+	.parts = intel_nor_parts,
+	.nparts = ARRAY_SIZE(intel_nor_parts),
 };
-- 
2.30.2

[PATCH v4 09/32] mtd: spi-nor: issi: unify function names

[Michael Walle]

To avoid name clashes unify all the function and static object names and
use one of the following prefixes which should be sufficiently unique:
 - <vendor>_nor_
 - <flash_family>_nor_
 - <flash_part>_

There are no functional changes.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/issi.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/mtd/spi-nor/issi.c b/drivers/mtd/spi-nor/issi.c
index 23629b919ade..c012bc2486e1 100644
--- a/drivers/mtd/spi-nor/issi.c
+++ b/drivers/mtd/spi-nor/issi.c
@@ -29,7 +29,7 @@ static const struct spi_nor_fixups is25lp256_fixups = {
 	.post_bfpt = is25lp256_post_bfpt_fixups,
 };
 
-static const struct flash_info issi_parts[] = {
+static const struct flash_info issi_nor_parts[] = {
 	/* ISSI */
 	{ "is25cd512",  INFO(0x7f9d20, 0, 32 * 1024,   2)
 		NO_SFDP_FLAGS(SECT_4K) },
@@ -69,18 +69,18 @@ static const struct flash_info issi_parts[] = {
 		NO_SFDP_FLAGS(SECT_4K) },
 };
 
-static void issi_default_init(struct spi_nor *nor)
+static void issi_nor_default_init(struct spi_nor *nor)
 {
 	nor->params->quad_enable = spi_nor_sr1_bit6_quad_enable;
 }
 
 static const struct spi_nor_fixups issi_fixups = {
-	.default_init = issi_default_init,
+	.default_init = issi_nor_default_init,
 };
 
 const struct spi_nor_manufacturer spi_nor_issi = {
 	.name = "issi",
-	.parts = issi_parts,
-	.nparts = ARRAY_SIZE(issi_parts),
+	.parts = issi_nor_parts,
+	.nparts = ARRAY_SIZE(issi_nor_parts),
 	.fixups = &issi_fixups,
 };
-- 
2.30.2

[PATCH v4 10/32] mtd: spi-nor: macronix: unify function names

[Michael Walle]

To avoid name clashes unify all the function and static object names and
use one of the following prefixes which should be sufficiently unique:
 - <vendor>_nor_
 - <flash_family>_nor_
 - <flash_part>_

There are no functional changes.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/macronix.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/mtd/spi-nor/macronix.c b/drivers/mtd/spi-nor/macronix.c
index 97dba1ae7fb1..d81a4cb2812b 100644
--- a/drivers/mtd/spi-nor/macronix.c
+++ b/drivers/mtd/spi-nor/macronix.c
@@ -32,7 +32,7 @@ static const struct spi_nor_fixups mx25l25635_fixups = {
 	.post_bfpt = mx25l25635_post_bfpt_fixups,
 };
 
-static const struct flash_info macronix_parts[] = {
+static const struct flash_info macronix_nor_parts[] = {
 	/* Macronix */
 	{ "mx25l512e",   INFO(0xc22010, 0, 64 * 1024,   1)
 		NO_SFDP_FLAGS(SECT_4K) },
@@ -102,19 +102,19 @@ static const struct flash_info macronix_parts[] = {
 		FIXUP_FLAGS(SPI_NOR_4B_OPCODES) },
 };
 
-static void macronix_default_init(struct spi_nor *nor)
+static void macronix_nor_default_init(struct spi_nor *nor)
 {
 	nor->params->quad_enable = spi_nor_sr1_bit6_quad_enable;
 	nor->params->set_4byte_addr_mode = spi_nor_set_4byte_addr_mode;
 }
 
-static const struct spi_nor_fixups macronix_fixups = {
-	.default_init = macronix_default_init,
+static const struct spi_nor_fixups macronix_nor_fixups = {
+	.default_init = macronix_nor_default_init,
 };
 
 const struct spi_nor_manufacturer spi_nor_macronix = {
 	.name = "macronix",
-	.parts = macronix_parts,
-	.nparts = ARRAY_SIZE(macronix_parts),
-	.fixups = &macronix_fixups,
+	.parts = macronix_nor_parts,
+	.nparts = ARRAY_SIZE(macronix_nor_parts),
+	.fixups = &macronix_nor_fixups,
 };
-- 
2.30.2

[PATCH v4 11/32] mtd: spi-nor: micron-st: unify function names

[Michael Walle]

To avoid name clashes unify all the function and static object names and
use one of the following prefixes which should be sufficiently unique:
 - <vendor>_nor_
 - <flash_family>_nor_
 - <flash_part>_

There are no functional changes.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/micron-st.c | 34 ++++++++++++++++-----------------
 1 file changed, 17 insertions(+), 17 deletions(-)

diff --git a/drivers/mtd/spi-nor/micron-st.c b/drivers/mtd/spi-nor/micron-st.c
index bb95b1aabf74..7a68f2ad3ea1 100644
--- a/drivers/mtd/spi-nor/micron-st.c
+++ b/drivers/mtd/spi-nor/micron-st.c
@@ -17,7 +17,7 @@
 #define SPINOR_MT_OCT_DTR	0xe7	/* Enable Octal DTR. */
 #define SPINOR_MT_EXSPI		0xff	/* Enable Extended SPI (default) */
 
-static int spi_nor_micron_octal_dtr_enable(struct spi_nor *nor, bool enable)
+static int micron_st_nor_octal_dtr_enable(struct spi_nor *nor, bool enable)
 {
 	struct spi_mem_op op;
 	u8 *buf = nor->bouncebuf;
@@ -102,7 +102,7 @@ static int spi_nor_micron_octal_dtr_enable(struct spi_nor *nor, bool enable)
 
 static void mt35xu512aba_default_init(struct spi_nor *nor)
 {
-	nor->params->octal_dtr_enable = spi_nor_micron_octal_dtr_enable;
+	nor->params->octal_dtr_enable = micron_st_nor_octal_dtr_enable;
 }
 
 static void mt35xu512aba_post_sfdp_fixup(struct spi_nor *nor)
@@ -130,7 +130,7 @@ static const struct spi_nor_fixups mt35xu512aba_fixups = {
 	.post_sfdp = mt35xu512aba_post_sfdp_fixup,
 };
 
-static const struct flash_info micron_parts[] = {
+static const struct flash_info micron_nor_parts[] = {
 	{ "mt35xu512aba", INFO(0x2c5b1a, 0, 128 * 1024, 512)
 		FLAGS(USE_FSR)
 		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_OCTAL_READ |
@@ -143,7 +143,7 @@ static const struct flash_info micron_parts[] = {
 		FIXUP_FLAGS(SPI_NOR_4B_OPCODES) },
 };
 
-static const struct flash_info st_parts[] = {
+static const struct flash_info st_nor_parts[] = {
 	{ "n25q016a",	 INFO(0x20bb15, 0, 64 * 1024,   32)
 		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ) },
 	{ "n25q032",	 INFO(0x20ba16, 0, 64 * 1024,   64)
@@ -250,15 +250,15 @@ static const struct flash_info st_parts[] = {
 };
 
 /**
- * st_micron_set_4byte_addr_mode() - Set 4-byte address mode for ST and Micron
- * flashes.
+ * micron_st_nor_set_4byte_addr_mode() - Set 4-byte address mode for ST and
+ * Micron flashes.
  * @nor:	pointer to 'struct spi_nor'.
  * @enable:	true to enter the 4-byte address mode, false to exit the 4-byte
  *		address mode.
  *
  * Return: 0 on success, -errno otherwise.
  */
-static int st_micron_set_4byte_addr_mode(struct spi_nor *nor, bool enable)
+static int micron_st_nor_set_4byte_addr_mode(struct spi_nor *nor, bool enable)
 {
 	int ret;
 
@@ -273,28 +273,28 @@ static int st_micron_set_4byte_addr_mode(struct spi_nor *nor, bool enable)
 	return spi_nor_write_disable(nor);
 }
 
-static void micron_st_default_init(struct spi_nor *nor)
+static void micron_st_nor_default_init(struct spi_nor *nor)
 {
 	nor->flags |= SNOR_F_HAS_LOCK;
 	nor->flags &= ~SNOR_F_HAS_16BIT_SR;
 	nor->params->quad_enable = NULL;
-	nor->params->set_4byte_addr_mode = st_micron_set_4byte_addr_mode;
+	nor->params->set_4byte_addr_mode = micron_st_nor_set_4byte_addr_mode;
 }
 
-static const struct spi_nor_fixups micron_st_fixups = {
-	.default_init = micron_st_default_init,
+static const struct spi_nor_fixups micron_st_nor_fixups = {
+	.default_init = micron_st_nor_default_init,
 };
 
 const struct spi_nor_manufacturer spi_nor_micron = {
 	.name = "micron",
-	.parts = micron_parts,
-	.nparts = ARRAY_SIZE(micron_parts),
-	.fixups = &micron_st_fixups,
+	.parts = micron_nor_parts,
+	.nparts = ARRAY_SIZE(micron_nor_parts),
+	.fixups = &micron_st_nor_fixups,
 };
 
 const struct spi_nor_manufacturer spi_nor_st = {
 	.name = "st",
-	.parts = st_parts,
-	.nparts = ARRAY_SIZE(st_parts),
-	.fixups = &micron_st_fixups,
+	.parts = st_nor_parts,
+	.nparts = ARRAY_SIZE(st_nor_parts),
+	.fixups = &micron_st_nor_fixups,
 };
-- 
2.30.2

[PATCH v4 12/32] mtd: spi-nor: spansion: unify function names

[Michael Walle]

To avoid name clashes unify all the function and static object names and
use one of the following prefixes which should be sufficiently unique:
 - <vendor>_nor_
 - <flash_family>_nor_
 - <flash_part>_

There are no functional changes.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/spansion.c | 34 +++++++++++++++++-----------------
 1 file changed, 17 insertions(+), 17 deletions(-)

diff --git a/drivers/mtd/spi-nor/spansion.c b/drivers/mtd/spi-nor/spansion.c
index 534196b1d3e7..5affa8ae43a7 100644
--- a/drivers/mtd/spi-nor/spansion.c
+++ b/drivers/mtd/spi-nor/spansion.c
@@ -20,7 +20,7 @@
 #define SPINOR_OP_CYPRESS_RD_FAST		0xee
 
 /**
- * spi_nor_cypress_octal_dtr_enable() - Enable octal DTR on Cypress flashes.
+ * cypress_nor_octal_dtr_enable() - Enable octal DTR on Cypress flashes.
  * @nor:		pointer to a 'struct spi_nor'
  * @enable:              whether to enable or disable Octal DTR
  *
@@ -29,7 +29,7 @@
  *
  * Return: 0 on success, -errno otherwise.
  */
-static int spi_nor_cypress_octal_dtr_enable(struct spi_nor *nor, bool enable)
+static int cypress_nor_octal_dtr_enable(struct spi_nor *nor, bool enable)
 {
 	struct spi_mem_op op;
 	u8 *buf = nor->bouncebuf;
@@ -116,7 +116,7 @@ static int spi_nor_cypress_octal_dtr_enable(struct spi_nor *nor, bool enable)
 
 static void s28hs512t_default_init(struct spi_nor *nor)
 {
-	nor->params->octal_dtr_enable = spi_nor_cypress_octal_dtr_enable;
+	nor->params->octal_dtr_enable = cypress_nor_octal_dtr_enable;
 	nor->params->writesize = 16;
 }
 
@@ -183,9 +183,9 @@ static const struct spi_nor_fixups s28hs512t_fixups = {
 };
 
 static int
-s25fs_s_post_bfpt_fixups(struct spi_nor *nor,
-			 const struct sfdp_parameter_header *bfpt_header,
-			 const struct sfdp_bfpt *bfpt)
+s25fs_s_nor_post_bfpt_fixups(struct spi_nor *nor,
+			     const struct sfdp_parameter_header *bfpt_header,
+			     const struct sfdp_bfpt *bfpt)
 {
 	/*
 	 * The S25FS-S chip family reports 512-byte pages in BFPT but
@@ -198,11 +198,11 @@ s25fs_s_post_bfpt_fixups(struct spi_nor *nor,
 	return 0;
 }
 
-static const struct spi_nor_fixups s25fs_s_fixups = {
-	.post_bfpt = s25fs_s_post_bfpt_fixups,
+static const struct spi_nor_fixups s25fs_s_nor_fixups = {
+	.post_bfpt = s25fs_s_nor_post_bfpt_fixups,
 };
 
-static const struct flash_info spansion_parts[] = {
+static const struct flash_info spansion_nor_parts[] = {
 	/* Spansion/Cypress -- single (large) sector size only, at least
 	 * for the chips listed here (without boot sectors).
 	 */
@@ -229,7 +229,7 @@ static const struct flash_info spansion_parts[] = {
 	{ "s25fs128s1", INFO6(0x012018, 0x4d0181, 64 * 1024, 256)
 		FLAGS(USE_CLSR)
 		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
-		.fixups = &s25fs_s_fixups, },
+		.fixups = &s25fs_s_nor_fixups, },
 	{ "s25fs256s0", INFO6(0x010219, 0x4d0081, 256 * 1024, 128)
 		FLAGS(USE_CLSR)
 		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
@@ -239,7 +239,7 @@ static const struct flash_info spansion_parts[] = {
 	{ "s25fs512s",  INFO6(0x010220, 0x4d0081, 256 * 1024, 256)
 		FLAGS(USE_CLSR)
 		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
-		.fixups = &s25fs_s_fixups, },
+		.fixups = &s25fs_s_nor_fixups, },
 	{ "s25sl12800", INFO(0x012018, 0x0300, 256 * 1024,  64) },
 	{ "s25sl12801", INFO(0x012018, 0x0301,  64 * 1024, 256) },
 	{ "s25fl129p0", INFO(0x012018, 0x4d00, 256 * 1024,  64)
@@ -294,7 +294,7 @@ static const struct flash_info spansion_parts[] = {
 	},
 };
 
-static void spansion_late_init(struct spi_nor *nor)
+static void spansion_nor_late_init(struct spi_nor *nor)
 {
 	if (nor->params->size <= SZ_16M)
 		return;
@@ -305,13 +305,13 @@ static void spansion_late_init(struct spi_nor *nor)
 	nor->mtd.erasesize = nor->info->sector_size;
 }
 
-static const struct spi_nor_fixups spansion_fixups = {
-	.late_init = spansion_late_init,
+static const struct spi_nor_fixups spansion_nor_fixups = {
+	.late_init = spansion_nor_late_init,
 };
 
 const struct spi_nor_manufacturer spi_nor_spansion = {
 	.name = "spansion",
-	.parts = spansion_parts,
-	.nparts = ARRAY_SIZE(spansion_parts),
-	.fixups = &spansion_fixups,
+	.parts = spansion_nor_parts,
+	.nparts = ARRAY_SIZE(spansion_nor_parts),
+	.fixups = &spansion_nor_fixups,
 };
-- 
2.30.2

[PATCH v4 13/32] mtd: spi-nor: sst: unify function names

[Michael Walle]

To avoid name clashes unify all the function and static object names and
use one of the following prefixes which should be sufficiently unique:
 - <vendor>_nor_
 - <flash_family>_nor_
 - <flash_part>_

There are no functional changes.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/sst.c | 44 +++++++++++++++++++--------------------
 1 file changed, 22 insertions(+), 22 deletions(-)

diff --git a/drivers/mtd/spi-nor/sst.c b/drivers/mtd/spi-nor/sst.c
index 30183e9189b9..63bcc97bf978 100644
--- a/drivers/mtd/spi-nor/sst.c
+++ b/drivers/mtd/spi-nor/sst.c
@@ -13,12 +13,12 @@
 
 #define SST26VF_CR_BPNV		BIT(3)
 
-static int sst26vf_lock(struct spi_nor *nor, loff_t ofs, uint64_t len)
+static int sst26vf_nor_lock(struct spi_nor *nor, loff_t ofs, uint64_t len)
 {
 	return -EOPNOTSUPP;
 }
 
-static int sst26vf_unlock(struct spi_nor *nor, loff_t ofs, uint64_t len)
+static int sst26vf_nor_unlock(struct spi_nor *nor, loff_t ofs, uint64_t len)
 {
 	int ret;
 
@@ -38,27 +38,27 @@ static int sst26vf_unlock(struct spi_nor *nor, loff_t ofs, uint64_t len)
 	return spi_nor_global_block_unlock(nor);
 }
 
-static int sst26vf_is_locked(struct spi_nor *nor, loff_t ofs, uint64_t len)
+static int sst26vf_nor_is_locked(struct spi_nor *nor, loff_t ofs, uint64_t len)
 {
 	return -EOPNOTSUPP;
 }
 
-static const struct spi_nor_locking_ops sst26vf_locking_ops = {
-	.lock = sst26vf_lock,
-	.unlock = sst26vf_unlock,
-	.is_locked = sst26vf_is_locked,
+static const struct spi_nor_locking_ops sst26vf_nor_locking_ops = {
+	.lock = sst26vf_nor_lock,
+	.unlock = sst26vf_nor_unlock,
+	.is_locked = sst26vf_nor_is_locked,
 };
 
-static void sst26vf_late_init(struct spi_nor *nor)
+static void sst26vf_nor_late_init(struct spi_nor *nor)
 {
-	nor->params->locking_ops = &sst26vf_locking_ops;
+	nor->params->locking_ops = &sst26vf_nor_locking_ops;
 }
 
-static const struct spi_nor_fixups sst26vf_fixups = {
-	.late_init = sst26vf_late_init,
+static const struct spi_nor_fixups sst26vf_nor_fixups = {
+	.late_init = sst26vf_nor_late_init,
 };
 
-static const struct flash_info sst_parts[] = {
+static const struct flash_info sst_nor_parts[] = {
 	/* SST -- large erase sizes are "overlays", "sectors" are 4K */
 	{ "sst25vf040b", INFO(0xbf258d, 0, 64 * 1024,  8)
 		FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_SWP_IS_VOLATILE)
@@ -114,11 +114,11 @@ static const struct flash_info sst_parts[] = {
 	{ "sst26vf064b", INFO(0xbf2643, 0, 64 * 1024, 128)
 		FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_SWP_IS_VOLATILE)
 		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
-		.fixups = &sst26vf_fixups },
+		.fixups = &sst26vf_nor_fixups },
 };
 
-static int sst_write(struct mtd_info *mtd, loff_t to, size_t len,
-		     size_t *retlen, const u_char *buf)
+static int sst_nor_write(struct mtd_info *mtd, loff_t to, size_t len,
+			 size_t *retlen, const u_char *buf)
 {
 	struct spi_nor *nor = mtd_to_spi_nor(mtd);
 	size_t actual = 0;
@@ -203,19 +203,19 @@ static int sst_write(struct mtd_info *mtd, loff_t to, size_t len,
 	return ret;
 }
 
-static void sst_late_init(struct spi_nor *nor)
+static void sst_nor_late_init(struct spi_nor *nor)
 {
 	if (nor->info->mfr_flags & SST_WRITE)
-		nor->mtd._write = sst_write;
+		nor->mtd._write = sst_nor_write;
 }
 
-static const struct spi_nor_fixups sst_fixups = {
-	.late_init = sst_late_init,
+static const struct spi_nor_fixups sst_nor_fixups = {
+	.late_init = sst_nor_late_init,
 };
 
 const struct spi_nor_manufacturer spi_nor_sst = {
 	.name = "sst",
-	.parts = sst_parts,
-	.nparts = ARRAY_SIZE(sst_parts),
-	.fixups = &sst_fixups,
+	.parts = sst_nor_parts,
+	.nparts = ARRAY_SIZE(sst_nor_parts),
+	.fixups = &sst_nor_fixups,
 };
-- 
2.30.2

[PATCH v4 14/32] mtd: spi-nor: winbond: unify function names

[Michael Walle]

To avoid name clashes unify all the function and static object names and
use one of the following prefixes which should be sufficiently unique:
 - <vendor>_nor_
 - <flash_family>_nor_
 - <flash_part>_

There are no functional changes.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/winbond.c | 29 +++++++++++++++--------------
 1 file changed, 15 insertions(+), 14 deletions(-)

diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index 3d91888882e4..1e8fb571680b 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -32,7 +32,7 @@ static const struct spi_nor_fixups w25q256_fixups = {
 	.post_bfpt = w25q256_post_bfpt_fixups,
 };
 
-static const struct flash_info winbond_parts[] = {
+static const struct flash_info winbond_nor_parts[] = {
 	/* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */
 	{ "w25x05", INFO(0xef3010, 0, 64 * 1024,  1)
 		NO_SFDP_FLAGS(SECT_4K) },
@@ -131,14 +131,15 @@ static const struct flash_info winbond_parts[] = {
 };
 
 /**
- * winbond_set_4byte_addr_mode() - Set 4-byte address mode for Winbond flashes.
+ * winbond_nor_set_4byte_addr_mode() - Set 4-byte address mode for Winbond
+ * flashes.
  * @nor:	pointer to 'struct spi_nor'.
  * @enable:	true to enter the 4-byte address mode, false to exit the 4-byte
  *		address mode.
  *
  * Return: 0 on success, -errno otherwise.
  */
-static int winbond_set_4byte_addr_mode(struct spi_nor *nor, bool enable)
+static int winbond_nor_set_4byte_addr_mode(struct spi_nor *nor, bool enable)
 {
 	int ret;
 
@@ -162,7 +163,7 @@ static int winbond_set_4byte_addr_mode(struct spi_nor *nor, bool enable)
 	return spi_nor_write_disable(nor);
 }
 
-static const struct spi_nor_otp_ops winbond_otp_ops = {
+static const struct spi_nor_otp_ops winbond_nor_otp_ops = {
 	.read = spi_nor_otp_read_secr,
 	.write = spi_nor_otp_write_secr,
 	.erase = spi_nor_otp_erase_secr,
@@ -170,25 +171,25 @@ static const struct spi_nor_otp_ops winbond_otp_ops = {
 	.is_locked = spi_nor_otp_is_locked_sr2,
 };
 
-static void winbond_default_init(struct spi_nor *nor)
+static void winbond_nor_default_init(struct spi_nor *nor)
 {
-	nor->params->set_4byte_addr_mode = winbond_set_4byte_addr_mode;
+	nor->params->set_4byte_addr_mode = winbond_nor_set_4byte_addr_mode;
 }
 
-static void winbond_late_init(struct spi_nor *nor)
+static void winbond_nor_late_init(struct spi_nor *nor)
 {
 	if (nor->params->otp.org->n_regions)
-		nor->params->otp.ops = &winbond_otp_ops;
+		nor->params->otp.ops = &winbond_nor_otp_ops;
 }
 
-static const struct spi_nor_fixups winbond_fixups = {
-	.default_init = winbond_default_init,
-	.late_init = winbond_late_init,
+static const struct spi_nor_fixups winbond_nor_fixups = {
+	.default_init = winbond_nor_default_init,
+	.late_init = winbond_nor_late_init,
 };
 
 const struct spi_nor_manufacturer spi_nor_winbond = {
 	.name = "winbond",
-	.parts = winbond_parts,
-	.nparts = ARRAY_SIZE(winbond_parts),
-	.fixups = &winbond_fixups,
+	.parts = winbond_nor_parts,
+	.nparts = ARRAY_SIZE(winbond_nor_parts),
+	.fixups = &winbond_nor_fixups,
 };
-- 
2.30.2

[PATCH v4 15/32] mtd: spi-nor: xilinx: unify function names

[Michael Walle]

To avoid name clashes unify all the function and static object names and
use one of the following prefixes which should be sufficiently unique:
 - <vendor>_nor_
 - <flash_family>_nor_
 - <flash_part>_

There are no functional changes.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/xilinx.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/mtd/spi-nor/xilinx.c b/drivers/mtd/spi-nor/xilinx.c
index 580562bc1e45..07dd11788df5 100644
--- a/drivers/mtd/spi-nor/xilinx.c
+++ b/drivers/mtd/spi-nor/xilinx.c
@@ -8,7 +8,7 @@
 
 #include "core.h"
 
-static const struct flash_info xilinx_parts[] = {
+static const struct flash_info xilinx_nor_parts[] = {
 	/* Xilinx S3AN Internal Flash */
 	{ "3S50AN", S3AN_INFO(0x1f2200, 64, 264) },
 	{ "3S200AN", S3AN_INFO(0x1f2400, 256, 264) },
@@ -26,7 +26,7 @@ static const struct flash_info xilinx_parts[] = {
  * Addr can safely be unsigned int, the biggest S3AN device is smaller than
  * 4 MiB.
  */
-static u32 s3an_convert_addr(struct spi_nor *nor, u32 addr)
+static u32 s3an_nor_convert_addr(struct spi_nor *nor, u32 addr)
 {
 	u32 page_size = nor->params->page_size;
 	u32 offset, page;
@@ -73,25 +73,25 @@ static int xilinx_nor_setup(struct spi_nor *nor,
 		nor->mtd.erasesize = 8 * page_size;
 	} else {
 		/* Flash in Default addressing mode */
-		nor->params->convert_addr = s3an_convert_addr;
+		nor->params->convert_addr = s3an_nor_convert_addr;
 		nor->mtd.erasesize = nor->info->sector_size;
 	}
 
 	return 0;
 }
 
-static void xilinx_late_init(struct spi_nor *nor)
+static void xilinx_nor_late_init(struct spi_nor *nor)
 {
 	nor->params->setup = xilinx_nor_setup;
 }
 
-static const struct spi_nor_fixups xilinx_fixups = {
-	.late_init = xilinx_late_init,
+static const struct spi_nor_fixups xilinx_nor_fixups = {
+	.late_init = xilinx_nor_late_init,
 };
 
 const struct spi_nor_manufacturer spi_nor_xilinx = {
 	.name = "xilinx",
-	.parts = xilinx_parts,
-	.nparts = ARRAY_SIZE(xilinx_parts),
-	.fixups = &xilinx_fixups,
+	.parts = xilinx_nor_parts,
+	.nparts = ARRAY_SIZE(xilinx_nor_parts),
+	.fixups = &xilinx_nor_fixups,
 };
-- 
2.30.2

[PATCH v4 16/32] mtd: spi-nor: xmc: unify function names

[Michael Walle]

To avoid name clashes unify all the function and static object names and
use one of the following prefixes which should be sufficiently unique:
 - <vendor>_nor_
 - <flash_family>_nor_
 - <flash_part>_

There are no functional changes.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/xmc.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/mtd/spi-nor/xmc.c b/drivers/mtd/spi-nor/xmc.c
index 2992af03cb0a..051411e86339 100644
--- a/drivers/mtd/spi-nor/xmc.c
+++ b/drivers/mtd/spi-nor/xmc.c
@@ -8,7 +8,7 @@
 
 #include "core.h"
 
-static const struct flash_info xmc_parts[] = {
+static const struct flash_info xmc_nor_parts[] = {
 	/* XMC (Wuhan Xinxin Semiconductor Manufacturing Corp.) */
 	{ "XM25QH64A", INFO(0x207017, 0, 64 * 1024, 128)
 		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
@@ -20,6 +20,6 @@ static const struct flash_info xmc_parts[] = {
 
 const struct spi_nor_manufacturer spi_nor_xmc = {
 	.name = "xmc",
-	.parts = xmc_parts,
-	.nparts = ARRAY_SIZE(xmc_parts),
+	.parts = xmc_nor_parts,
+	.nparts = ARRAY_SIZE(xmc_nor_parts),
 };
-- 
2.30.2

[PATCH v4 17/32] mtd: spi-nor: slightly refactor the spi_nor_setup()

[Michael Walle]

Instead of always using a function pointer (and initializing it to our
default), just call the default function if the flash didn't set its own
one. That will make the call flow easier to follow.

Also mark the parameter as optional now.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
---
 drivers/mtd/spi-nor/core.c | 10 +++++-----
 drivers/mtd/spi-nor/core.h |  8 ++++----
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index 04ea180118e3..4d2036cdce42 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -2532,11 +2532,12 @@ static int spi_nor_setup(struct spi_nor *nor,
 {
 	int ret;
 
-	if (nor->params->setup) {
+	if (nor->params->setup)
 		ret = nor->params->setup(nor, hwcaps);
-		if (ret)
-			return ret;
-	}
+	else
+		ret = spi_nor_default_setup(nor, hwcaps);
+	if (ret)
+		return ret;
 
 	return spi_nor_set_addr_width(nor);
 }
@@ -2786,7 +2787,6 @@ static void spi_nor_init_default_params(struct spi_nor *nor)
 
 	params->quad_enable = spi_nor_sr2_bit1_quad_enable;
 	params->set_4byte_addr_mode = spansion_set_4byte_addr_mode;
-	params->setup = spi_nor_default_setup;
 	params->otp.org = &info->otp_org;
 
 	/* Default to 16-bit Write Status (01h) Command */
diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h
index 2afb610853a9..4fe16b5aa3f5 100644
--- a/drivers/mtd/spi-nor/core.h
+++ b/drivers/mtd/spi-nor/core.h
@@ -257,10 +257,10 @@ struct spi_nor_otp {
  * @convert_addr:	converts an absolute address into something the flash
  *                      will understand. Particularly useful when pagesize is
  *                      not a power-of-2.
- * @setup:              configures the SPI NOR memory. Useful for SPI NOR
- *                      flashes that have peculiarities to the SPI NOR standard
- *                      e.g. different opcodes, specific address calculation,
- *                      page size, etc.
+ * @setup:		(optional) configures the SPI NOR memory. Useful for
+ *			SPI NOR flashes that have peculiarities to the SPI NOR
+ *			standard e.g. different opcodes, specific address
+ *			calculation, page size, etc.
  * @locking_ops:	SPI NOR locking methods.
  */
 struct spi_nor_flash_parameter {
-- 
2.30.2

[PATCH v4 18/32] mtd: spi-nor: allow a flash to define its own ready() function

[Michael Walle]

Xilinx and Micron flashes have their own implementation of the
spi_nor_ready() function. At the moment, the core will figure out
which one to call according to some flags. Lay the foundation to
make it possible that a flash can register its own ready()
function.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
---
 drivers/mtd/spi-nor/core.c | 4 ++++
 drivers/mtd/spi-nor/core.h | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index 4d2036cdce42..390a9ab413b7 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -794,6 +794,10 @@ static int spi_nor_ready(struct spi_nor *nor)
 {
 	int sr, fsr;
 
+	/* Flashes might override the standard routine. */
+	if (nor->params->ready)
+		return nor->params->ready(nor);
+
 	if (nor->flags & SNOR_F_READY_XSR_RDY)
 		sr = spi_nor_xsr_ready(nor);
 	else
diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h
index 4fe16b5aa3f5..fdc8c0f31f5c 100644
--- a/drivers/mtd/spi-nor/core.h
+++ b/drivers/mtd/spi-nor/core.h
@@ -261,6 +261,9 @@ struct spi_nor_otp {
  *			SPI NOR flashes that have peculiarities to the SPI NOR
  *			standard e.g. different opcodes, specific address
  *			calculation, page size, etc.
+ * @ready:		(optional) flashes might use a different mechanism
+ *			than reading the status register to indicate they
+ *			are ready for a new command
  * @locking_ops:	SPI NOR locking methods.
  */
 struct spi_nor_flash_parameter {
@@ -282,6 +285,7 @@ struct spi_nor_flash_parameter {
 	int (*set_4byte_addr_mode)(struct spi_nor *nor, bool enable);
 	u32 (*convert_addr)(struct spi_nor *nor, u32 addr);
 	int (*setup)(struct spi_nor *nor, const struct spi_nor_hwcaps *hwcaps);
+	int (*ready)(struct spi_nor *nor);
 
 	const struct spi_nor_locking_ops *locking_ops;
 };
-- 
2.30.2

[PATCH v4 19/32] mtd: spi-nor: export more function to be used in vendor modules

[Michael Walle]

We will move vendor specific code into the vendor modules and thus we
will have to export these functions so they can be called.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
---
 drivers/mtd/spi-nor/core.c | 10 +++++-----
 drivers/mtd/spi-nor/core.h |  6 ++++++
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index 390a9ab413b7..8481272533a3 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -157,8 +157,8 @@ static int spi_nor_spimem_exec_op(struct spi_nor *nor, struct spi_mem_op *op)
 	return spi_mem_exec_op(nor->spimem, op);
 }
 
-static int spi_nor_controller_ops_read_reg(struct spi_nor *nor, u8 opcode,
-					   u8 *buf, size_t len)
+int spi_nor_controller_ops_read_reg(struct spi_nor *nor, u8 opcode,
+				    u8 *buf, size_t len)
 {
 	if (spi_nor_protocol_is_dtr(nor->reg_proto))
 		return -EOPNOTSUPP;
@@ -166,8 +166,8 @@ static int spi_nor_controller_ops_read_reg(struct spi_nor *nor, u8 opcode,
 	return nor->controller_ops->read_reg(nor, opcode, buf, len);
 }
 
-static int spi_nor_controller_ops_write_reg(struct spi_nor *nor, u8 opcode,
-					    const u8 *buf, size_t len)
+int spi_nor_controller_ops_write_reg(struct spi_nor *nor, u8 opcode,
+				     const u8 *buf, size_t len)
 {
 	if (spi_nor_protocol_is_dtr(nor->reg_proto))
 		return -EOPNOTSUPP;
@@ -683,7 +683,7 @@ static void spi_nor_clear_sr(struct spi_nor *nor)
  *
  * Return: 1 if ready, 0 if not ready, -errno on errors.
  */
-static int spi_nor_sr_ready(struct spi_nor *nor)
+int spi_nor_sr_ready(struct spi_nor *nor)
 {
 	int ret = spi_nor_read_sr(nor, nor->bouncebuf);
 
diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h
index fdc8c0f31f5c..446218b0e017 100644
--- a/drivers/mtd/spi-nor/core.h
+++ b/drivers/mtd/spi-nor/core.h
@@ -558,6 +558,7 @@ int spi_nor_sr1_bit6_quad_enable(struct spi_nor *nor);
 int spi_nor_sr2_bit1_quad_enable(struct spi_nor *nor);
 int spi_nor_sr2_bit7_quad_enable(struct spi_nor *nor);
 int spi_nor_read_sr(struct spi_nor *nor, u8 *sr);
+int spi_nor_sr_ready(struct spi_nor *nor);
 int spi_nor_read_cr(struct spi_nor *nor, u8 *cr);
 int spi_nor_write_sr(struct spi_nor *nor, const u8 *sr, size_t len);
 int spi_nor_write_sr_and_check(struct spi_nor *nor, u8 sr1);
@@ -603,6 +604,11 @@ void spi_nor_try_unlock_all(struct spi_nor *nor);
 void spi_nor_set_mtd_locking_ops(struct spi_nor *nor);
 void spi_nor_set_mtd_otp_ops(struct spi_nor *nor);
 
+int spi_nor_controller_ops_read_reg(struct spi_nor *nor, u8 opcode,
+				    u8 *buf, size_t len);
+int spi_nor_controller_ops_write_reg(struct spi_nor *nor, u8 opcode,
+				     const u8 *buf, size_t len);
+
 static inline struct spi_nor *mtd_to_spi_nor(struct mtd_info *mtd)
 {
 	return container_of(mtd, struct spi_nor, mtd);
-- 
2.30.2

[PATCH v4 20/32] mtd: spi-nor: guard _page_size parameter in S3AN_INFO()

[Michael Walle]

The _page_size marco parameter was missing parentheses around it. Add
them.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/core.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h
index 446218b0e017..3c37b46d60d5 100644
--- a/drivers/mtd/spi-nor/core.h
+++ b/drivers/mtd/spi-nor/core.h
@@ -469,9 +469,9 @@ struct flash_info {
 			(_jedec_id) & 0xff				\
 			},						\
 		.id_len = 3,						\
-		.sector_size = (8*_page_size),				\
+		.sector_size = (8 * (_page_size)),			\
 		.n_sectors = (_n_sectors),				\
-		.page_size = _page_size,				\
+		.page_size = (_page_size),				\
 		.addr_width = 3,					\
 		.flags = SPI_NOR_NO_FR | SPI_NOR_XSR_RDY,
 
-- 
2.30.2

[PATCH v4 21/32] mtd: spi-nor: move all xilinx specifics into xilinx.c

[Michael Walle]

Mechanically move all the xilinx functions to its own module.

Then register the new flash specific ready() function.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
---
 drivers/mtd/spi-nor/core.c   | 64 +------------------------------
 drivers/mtd/spi-nor/core.h   | 18 ---------
 drivers/mtd/spi-nor/xilinx.c | 73 ++++++++++++++++++++++++++++++++++++
 include/linux/mtd/spi-nor.h  |  9 -----
 4 files changed, 74 insertions(+), 90 deletions(-)

diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index 8481272533a3..ae1560250c48 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -598,57 +598,6 @@ int spi_nor_write_ear(struct spi_nor *nor, u8 ear)
 	return ret;
 }
 
-/**
- * spi_nor_xread_sr() - Read the Status Register on S3AN flashes.
- * @nor:	pointer to 'struct spi_nor'.
- * @sr:		pointer to a DMA-able buffer where the value of the
- *              Status Register will be written.
- *
- * Return: 0 on success, -errno otherwise.
- */
-int spi_nor_xread_sr(struct spi_nor *nor, u8 *sr)
-{
-	int ret;
-
-	if (nor->spimem) {
-		struct spi_mem_op op =
-			SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_XRDSR, 0),
-				   SPI_MEM_OP_NO_ADDR,
-				   SPI_MEM_OP_NO_DUMMY,
-				   SPI_MEM_OP_DATA_IN(1, sr, 0));
-
-		spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);
-
-		ret = spi_mem_exec_op(nor->spimem, &op);
-	} else {
-		ret = spi_nor_controller_ops_read_reg(nor, SPINOR_OP_XRDSR, sr,
-						      1);
-	}
-
-	if (ret)
-		dev_dbg(nor->dev, "error %d reading XRDSR\n", ret);
-
-	return ret;
-}
-
-/**
- * spi_nor_xsr_ready() - Query the Status Register of the S3AN flash to see if
- * the flash is ready for new commands.
- * @nor:	pointer to 'struct spi_nor'.
- *
- * Return: 1 if ready, 0 if not ready, -errno on errors.
- */
-static int spi_nor_xsr_ready(struct spi_nor *nor)
-{
-	int ret;
-
-	ret = spi_nor_xread_sr(nor, nor->bouncebuf);
-	if (ret)
-		return ret;
-
-	return !!(nor->bouncebuf[0] & XSR_RDY);
-}
-
 /**
  * spi_nor_clear_sr() - Clear the Status Register.
  * @nor:	pointer to 'struct spi_nor'.
@@ -798,10 +747,7 @@ static int spi_nor_ready(struct spi_nor *nor)
 	if (nor->params->ready)
 		return nor->params->ready(nor);
 
-	if (nor->flags & SNOR_F_READY_XSR_RDY)
-		sr = spi_nor_xsr_ready(nor);
-	else
-		sr = spi_nor_sr_ready(nor);
+	sr = spi_nor_sr_ready(nor);
 	if (sr < 0)
 		return sr;
 	fsr = nor->flags & SNOR_F_USE_FSR ? spi_nor_fsr_ready(nor) : 1;
@@ -2677,14 +2623,6 @@ static void spi_nor_init_flags(struct spi_nor *nor)
 
 	if (flags & USE_FSR)
 		nor->flags |= SNOR_F_USE_FSR;
-
-	/*
-	 * Make sure the XSR_RDY flag is set before calling
-	 * spi_nor_wait_till_ready(). Xilinx S3AN share MFR
-	 * with Atmel SPI NOR.
-	 */
-	if (flags & SPI_NOR_XSR_RDY)
-		nor->flags |=  SNOR_F_READY_XSR_RDY;
 }
 
 /**
diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h
index 3c37b46d60d5..fabc01ae9a81 100644
--- a/drivers/mtd/spi-nor/core.h
+++ b/drivers/mtd/spi-nor/core.h
@@ -15,7 +15,6 @@ enum spi_nor_option_flags {
 	SNOR_F_USE_FSR		= BIT(0),
 	SNOR_F_HAS_SR_TB	= BIT(1),
 	SNOR_F_NO_OP_CHIP_ERASE	= BIT(2),
-	SNOR_F_READY_XSR_RDY	= BIT(3),
 	SNOR_F_USE_CLSR		= BIT(4),
 	SNOR_F_BROKEN_RESET	= BIT(5),
 	SNOR_F_4B_OPCODES	= BIT(6),
@@ -351,8 +350,6 @@ struct spi_nor_fixups {
  *   SPI_NOR_NO_FR:           can't do fastread.
  *   USE_CLSR:                use CLSR command.
  *   USE_FSR:                 use flag status register
- *   SPI_NOR_XSR_RDY:         S3AN flashes have specific opcode to read the
- *                            status register.
  *
  * @no_sfdp_flags:  flags that indicate support that can be discovered via SFDP.
  *                  Used when SFDP tables are not defined in the flash. These
@@ -405,7 +402,6 @@ struct flash_info {
 #define SPI_NOR_NO_FR			BIT(8)
 #define USE_CLSR			BIT(9)
 #define USE_FSR				BIT(10)
-#define SPI_NOR_XSR_RDY			BIT(11)
 
 	u8 no_sfdp_flags;
 #define SPI_NOR_SKIP_SFDP		BIT(0)
@@ -462,19 +458,6 @@ struct flash_info {
 		.addr_width = (_addr_width),				\
 		.flags = SPI_NOR_NO_ERASE | SPI_NOR_NO_FR,		\
 
-#define S3AN_INFO(_jedec_id, _n_sectors, _page_size)			\
-		.id = {							\
-			((_jedec_id) >> 16) & 0xff,			\
-			((_jedec_id) >> 8) & 0xff,			\
-			(_jedec_id) & 0xff				\
-			},						\
-		.id_len = 3,						\
-		.sector_size = (8 * (_page_size)),			\
-		.n_sectors = (_n_sectors),				\
-		.page_size = (_page_size),				\
-		.addr_width = 3,					\
-		.flags = SPI_NOR_NO_FR | SPI_NOR_XSR_RDY,
-
 #define OTP_INFO(_len, _n_regions, _base, _offset)			\
 		.otp_org = {						\
 			.len = (_len),					\
@@ -564,7 +547,6 @@ int spi_nor_write_sr(struct spi_nor *nor, const u8 *sr, size_t len);
 int spi_nor_write_sr_and_check(struct spi_nor *nor, u8 sr1);
 int spi_nor_write_16bit_cr_and_check(struct spi_nor *nor, u8 cr);
 
-int spi_nor_xread_sr(struct spi_nor *nor, u8 *sr);
 ssize_t spi_nor_read_data(struct spi_nor *nor, loff_t from, size_t len,
 			  u8 *buf);
 ssize_t spi_nor_write_data(struct spi_nor *nor, loff_t to, size_t len,
diff --git a/drivers/mtd/spi-nor/xilinx.c b/drivers/mtd/spi-nor/xilinx.c
index 07dd11788df5..05c7fe843a7d 100644
--- a/drivers/mtd/spi-nor/xilinx.c
+++ b/drivers/mtd/spi-nor/xilinx.c
@@ -8,6 +8,27 @@
 
 #include "core.h"
 
+#define SPINOR_OP_XSE		0x50	/* Sector erase */
+#define SPINOR_OP_XPP		0x82	/* Page program */
+#define SPINOR_OP_XRDSR		0xd7	/* Read status register */
+
+#define XSR_PAGESIZE		BIT(0)	/* Page size in Po2 or Linear */
+#define XSR_RDY			BIT(7)	/* Ready */
+
+#define S3AN_INFO(_jedec_id, _n_sectors, _page_size)			\
+		.id = {							\
+			((_jedec_id) >> 16) & 0xff,			\
+			((_jedec_id) >> 8) & 0xff,			\
+			(_jedec_id) & 0xff				\
+			},						\
+		.id_len = 3,						\
+		.sector_size = (8 * (_page_size)),			\
+		.n_sectors = (_n_sectors),				\
+		.page_size = (_page_size),				\
+		.addr_width = 3,					\
+		.flags = SPI_NOR_NO_FR
+
+/* Xilinx S3AN share MFR with Atmel SPI NOR */
 static const struct flash_info xilinx_nor_parts[] = {
 	/* Xilinx S3AN Internal Flash */
 	{ "3S50AN", S3AN_INFO(0x1f2200, 64, 264) },
@@ -38,6 +59,57 @@ static u32 s3an_nor_convert_addr(struct spi_nor *nor, u32 addr)
 	return page | offset;
 }
 
+/**
+ * spi_nor_xread_sr() - Read the Status Register on S3AN flashes.
+ * @nor:	pointer to 'struct spi_nor'.
+ * @sr:		pointer to a DMA-able buffer where the value of the
+ *              Status Register will be written.
+ *
+ * Return: 0 on success, -errno otherwise.
+ */
+static int spi_nor_xread_sr(struct spi_nor *nor, u8 *sr)
+{
+	int ret;
+
+	if (nor->spimem) {
+		struct spi_mem_op op =
+			SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_XRDSR, 0),
+				   SPI_MEM_OP_NO_ADDR,
+				   SPI_MEM_OP_NO_DUMMY,
+				   SPI_MEM_OP_DATA_IN(1, sr, 0));
+
+		spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);
+
+		ret = spi_mem_exec_op(nor->spimem, &op);
+	} else {
+		ret = spi_nor_controller_ops_read_reg(nor, SPINOR_OP_XRDSR, sr,
+						      1);
+	}
+
+	if (ret)
+		dev_dbg(nor->dev, "error %d reading XRDSR\n", ret);
+
+	return ret;
+}
+
+/**
+ * spi_nor_xsr_ready() - Query the Status Register of the S3AN flash to see if
+ * the flash is ready for new commands.
+ * @nor:	pointer to 'struct spi_nor'.
+ *
+ * Return: 1 if ready, 0 if not ready, -errno on errors.
+ */
+static int spi_nor_xsr_ready(struct spi_nor *nor)
+{
+	int ret;
+
+	ret = spi_nor_xread_sr(nor, nor->bouncebuf);
+	if (ret)
+		return ret;
+
+	return !!(nor->bouncebuf[0] & XSR_RDY);
+}
+
 static int xilinx_nor_setup(struct spi_nor *nor,
 			    const struct spi_nor_hwcaps *hwcaps)
 {
@@ -83,6 +155,7 @@ static int xilinx_nor_setup(struct spi_nor *nor,
 static void xilinx_nor_late_init(struct spi_nor *nor)
 {
 	nor->params->setup = xilinx_nor_setup;
+	nor->params->ready = spi_nor_xsr_ready;
 }
 
 static const struct spi_nor_fixups xilinx_nor_fixups = {
diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h
index fc90fce26e33..b44b05a6f934 100644
--- a/include/linux/mtd/spi-nor.h
+++ b/include/linux/mtd/spi-nor.h
@@ -86,15 +86,6 @@
 #define SPINOR_OP_BP		0x02	/* Byte program */
 #define SPINOR_OP_AAI_WP	0xad	/* Auto address increment word program */
 
-/* Used for S3AN flashes only */
-#define SPINOR_OP_XSE		0x50	/* Sector erase */
-#define SPINOR_OP_XPP		0x82	/* Page program */
-#define SPINOR_OP_XRDSR		0xd7	/* Read status register */
-
-#define XSR_PAGESIZE		BIT(0)	/* Page size in Po2 or Linear */
-#define XSR_RDY			BIT(7)	/* Ready */
-
-
 /* Used for Macronix and Winbond flashes. */
 #define SPINOR_OP_EN4B		0xb7	/* Enter 4-byte mode */
 #define SPINOR_OP_EX4B		0xe9	/* Exit 4-byte mode */
-- 
2.30.2

[PATCH v4 22/32] mtd: spi-nor: xilinx: rename vendor specific functions and defines

[Michael Walle]

Drop the generic spi_nor prefix for all the xilinx functions.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/xilinx.c | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/drivers/mtd/spi-nor/xilinx.c b/drivers/mtd/spi-nor/xilinx.c
index 05c7fe843a7d..ffd5579d45cb 100644
--- a/drivers/mtd/spi-nor/xilinx.c
+++ b/drivers/mtd/spi-nor/xilinx.c
@@ -8,9 +8,9 @@
 
 #include "core.h"
 
-#define SPINOR_OP_XSE		0x50	/* Sector erase */
-#define SPINOR_OP_XPP		0x82	/* Page program */
-#define SPINOR_OP_XRDSR		0xd7	/* Read status register */
+#define XILINX_OP_SE		0x50	/* Sector erase */
+#define XILINX_OP_PP		0x82	/* Page program */
+#define XILINX_OP_RDSR		0xd7	/* Read status register */
 
 #define XSR_PAGESIZE		BIT(0)	/* Page size in Po2 or Linear */
 #define XSR_RDY			BIT(7)	/* Ready */
@@ -60,20 +60,20 @@ static u32 s3an_nor_convert_addr(struct spi_nor *nor, u32 addr)
 }
 
 /**
- * spi_nor_xread_sr() - Read the Status Register on S3AN flashes.
+ * xilinx_nor_read_sr() - Read the Status Register on S3AN flashes.
  * @nor:	pointer to 'struct spi_nor'.
  * @sr:		pointer to a DMA-able buffer where the value of the
  *              Status Register will be written.
  *
  * Return: 0 on success, -errno otherwise.
  */
-static int spi_nor_xread_sr(struct spi_nor *nor, u8 *sr)
+static int xilinx_nor_read_sr(struct spi_nor *nor, u8 *sr)
 {
 	int ret;
 
 	if (nor->spimem) {
 		struct spi_mem_op op =
-			SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_XRDSR, 0),
+			SPI_MEM_OP(SPI_MEM_OP_CMD(XILINX_OP_RDSR, 0),
 				   SPI_MEM_OP_NO_ADDR,
 				   SPI_MEM_OP_NO_DUMMY,
 				   SPI_MEM_OP_DATA_IN(1, sr, 0));
@@ -82,7 +82,7 @@ static int spi_nor_xread_sr(struct spi_nor *nor, u8 *sr)
 
 		ret = spi_mem_exec_op(nor->spimem, &op);
 	} else {
-		ret = spi_nor_controller_ops_read_reg(nor, SPINOR_OP_XRDSR, sr,
+		ret = spi_nor_controller_ops_read_reg(nor, XILINX_OP_RDSR, sr,
 						      1);
 	}
 
@@ -93,17 +93,17 @@ static int spi_nor_xread_sr(struct spi_nor *nor, u8 *sr)
 }
 
 /**
- * spi_nor_xsr_ready() - Query the Status Register of the S3AN flash to see if
- * the flash is ready for new commands.
+ * xilinx_nor_sr_ready() - Query the Status Register of the S3AN flash to see
+ * if the flash is ready for new commands.
  * @nor:	pointer to 'struct spi_nor'.
  *
  * Return: 1 if ready, 0 if not ready, -errno on errors.
  */
-static int spi_nor_xsr_ready(struct spi_nor *nor)
+static int xilinx_nor_sr_ready(struct spi_nor *nor)
 {
 	int ret;
 
-	ret = spi_nor_xread_sr(nor, nor->bouncebuf);
+	ret = xilinx_nor_read_sr(nor, nor->bouncebuf);
 	if (ret)
 		return ret;
 
@@ -116,12 +116,12 @@ static int xilinx_nor_setup(struct spi_nor *nor,
 	u32 page_size;
 	int ret;
 
-	ret = spi_nor_xread_sr(nor, nor->bouncebuf);
+	ret = xilinx_nor_read_sr(nor, nor->bouncebuf);
 	if (ret)
 		return ret;
 
-	nor->erase_opcode = SPINOR_OP_XSE;
-	nor->program_opcode = SPINOR_OP_XPP;
+	nor->erase_opcode = XILINX_OP_SE;
+	nor->program_opcode = XILINX_OP_PP;
 	nor->read_opcode = SPINOR_OP_READ;
 	nor->flags |= SNOR_F_NO_OP_CHIP_ERASE;
 
@@ -155,7 +155,7 @@ static int xilinx_nor_setup(struct spi_nor *nor,
 static void xilinx_nor_late_init(struct spi_nor *nor)
 {
 	nor->params->setup = xilinx_nor_setup;
-	nor->params->ready = spi_nor_xsr_ready;
+	nor->params->ready = xilinx_nor_sr_ready;
 }
 
 static const struct spi_nor_fixups xilinx_nor_fixups = {
-- 
2.30.2

[PATCH v4 23/32] mtd: spi-nor: xilinx: correct the debug message

[Michael Walle]

XRDSR is a combination of xilinx and the RDSR opcode, but the register
is just the status register. Correct the debug message.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
---
 drivers/mtd/spi-nor/xilinx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/spi-nor/xilinx.c b/drivers/mtd/spi-nor/xilinx.c
index ffd5579d45cb..9459ac2609dc 100644
--- a/drivers/mtd/spi-nor/xilinx.c
+++ b/drivers/mtd/spi-nor/xilinx.c
@@ -87,7 +87,7 @@ static int xilinx_nor_read_sr(struct spi_nor *nor, u8 *sr)
 	}
 
 	if (ret)
-		dev_dbg(nor->dev, "error %d reading XRDSR\n", ret);
+		dev_dbg(nor->dev, "error %d reading SR\n", ret);
 
 	return ret;
 }
-- 
2.30.2

[PATCH v4 24/32] mtd: spi-nor: move all micron-st specifics into micron-st.c

[Michael Walle]

The flag status register is only available on micron flashes. Move all
the functions around that into the micron module.

This is almost a mechanical move except for the spi_nor_fsr_ready()
which now also checks the normal status register. Previously, this was
done in spi_nor_ready().

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
---
 drivers/mtd/spi-nor/core.c      | 123 +----------------------------
 drivers/mtd/spi-nor/micron-st.c | 133 ++++++++++++++++++++++++++++++++
 include/linux/mtd/spi-nor.h     |   8 --
 3 files changed, 134 insertions(+), 130 deletions(-)

diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index ae1560250c48..5b56d718692b 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -412,50 +412,6 @@ int spi_nor_read_sr(struct spi_nor *nor, u8 *sr)
 	return ret;
 }
 
-/**
- * spi_nor_read_fsr() - Read the Flag Status Register.
- * @nor:	pointer to 'struct spi_nor'
- * @fsr:	pointer to a DMA-able buffer where the value of the
- *              Flag Status Register will be written. Should be at least 2
- *              bytes.
- *
- * Return: 0 on success, -errno otherwise.
- */
-static int spi_nor_read_fsr(struct spi_nor *nor, u8 *fsr)
-{
-	int ret;
-
-	if (nor->spimem) {
-		struct spi_mem_op op =
-			SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_RDFSR, 0),
-				   SPI_MEM_OP_NO_ADDR,
-				   SPI_MEM_OP_NO_DUMMY,
-				   SPI_MEM_OP_DATA_IN(1, fsr, 0));
-
-		if (nor->reg_proto == SNOR_PROTO_8_8_8_DTR) {
-			op.addr.nbytes = nor->params->rdsr_addr_nbytes;
-			op.dummy.nbytes = nor->params->rdsr_dummy;
-			/*
-			 * We don't want to read only one byte in DTR mode. So,
-			 * read 2 and then discard the second byte.
-			 */
-			op.data.nbytes = 2;
-		}
-
-		spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);
-
-		ret = spi_mem_exec_op(nor->spimem, &op);
-	} else {
-		ret = spi_nor_controller_ops_read_reg(nor, SPINOR_OP_RDFSR, fsr,
-						      1);
-	}
-
-	if (ret)
-		dev_dbg(nor->dev, "error %d reading FSR\n", ret);
-
-	return ret;
-}
-
 /**
  * spi_nor_read_cr() - Read the Configuration Register using the
  * SPINOR_OP_RDCR (35h) command.
@@ -664,75 +620,6 @@ int spi_nor_sr_ready(struct spi_nor *nor)
 	return !(nor->bouncebuf[0] & SR_WIP);
 }
 
-/**
- * spi_nor_clear_fsr() - Clear the Flag Status Register.
- * @nor:	pointer to 'struct spi_nor'.
- */
-static void spi_nor_clear_fsr(struct spi_nor *nor)
-{
-	int ret;
-
-	if (nor->spimem) {
-		struct spi_mem_op op =
-			SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_CLFSR, 0),
-				   SPI_MEM_OP_NO_ADDR,
-				   SPI_MEM_OP_NO_DUMMY,
-				   SPI_MEM_OP_NO_DATA);
-
-		spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);
-
-		ret = spi_mem_exec_op(nor->spimem, &op);
-	} else {
-		ret = spi_nor_controller_ops_write_reg(nor, SPINOR_OP_CLFSR,
-						       NULL, 0);
-	}
-
-	if (ret)
-		dev_dbg(nor->dev, "error %d clearing FSR\n", ret);
-}
-
-/**
- * spi_nor_fsr_ready() - Query the Flag Status Register to see if the flash is
- * ready for new commands.
- * @nor:	pointer to 'struct spi_nor'.
- *
- * Return: 1 if ready, 0 if not ready, -errno on errors.
- */
-static int spi_nor_fsr_ready(struct spi_nor *nor)
-{
-	int ret = spi_nor_read_fsr(nor, nor->bouncebuf);
-
-	if (ret)
-		return ret;
-
-	if (nor->bouncebuf[0] & (FSR_E_ERR | FSR_P_ERR)) {
-		if (nor->bouncebuf[0] & FSR_E_ERR)
-			dev_err(nor->dev, "Erase operation failed.\n");
-		else
-			dev_err(nor->dev, "Program operation failed.\n");
-
-		if (nor->bouncebuf[0] & FSR_PT_ERR)
-			dev_err(nor->dev,
-			"Attempted to modify a protected sector.\n");
-
-		spi_nor_clear_fsr(nor);
-
-		/*
-		 * WEL bit remains set to one when an erase or page program
-		 * error occurs. Issue a Write Disable command to protect
-		 * against inadvertent writes that can possibly corrupt the
-		 * contents of the memory.
-		 */
-		ret = spi_nor_write_disable(nor);
-		if (ret)
-			return ret;
-
-		return -EIO;
-	}
-
-	return !!(nor->bouncebuf[0] & FSR_READY);
-}
-
 /**
  * spi_nor_ready() - Query the flash to see if it is ready for new commands.
  * @nor:	pointer to 'struct spi_nor'.
@@ -741,19 +628,11 @@ static int spi_nor_fsr_ready(struct spi_nor *nor)
  */
 static int spi_nor_ready(struct spi_nor *nor)
 {
-	int sr, fsr;
-
 	/* Flashes might override the standard routine. */
 	if (nor->params->ready)
 		return nor->params->ready(nor);
 
-	sr = spi_nor_sr_ready(nor);
-	if (sr < 0)
-		return sr;
-	fsr = nor->flags & SNOR_F_USE_FSR ? spi_nor_fsr_ready(nor) : 1;
-	if (fsr < 0)
-		return fsr;
-	return sr && fsr;
+	return spi_nor_sr_ready(nor);
 }
 
 /**
diff --git a/drivers/mtd/spi-nor/micron-st.c b/drivers/mtd/spi-nor/micron-st.c
index 7a68f2ad3ea1..8877b122cf42 100644
--- a/drivers/mtd/spi-nor/micron-st.c
+++ b/drivers/mtd/spi-nor/micron-st.c
@@ -8,6 +8,8 @@
 
 #include "core.h"
 
+#define SPINOR_OP_RDFSR		0x70	/* Read flag status register */
+#define SPINOR_OP_CLFSR		0x50	/* Clear flag status register */
 #define SPINOR_OP_MT_DTR_RD	0xfd	/* Fast Read opcode in DTR mode */
 #define SPINOR_OP_MT_RD_ANY_REG	0x85	/* Read volatile register */
 #define SPINOR_OP_MT_WR_ANY_REG	0x81	/* Write volatile register */
@@ -17,6 +19,12 @@
 #define SPINOR_MT_OCT_DTR	0xe7	/* Enable Octal DTR. */
 #define SPINOR_MT_EXSPI		0xff	/* Enable Extended SPI (default) */
 
+/* Flag Status Register bits */
+#define FSR_READY		BIT(7)	/* Device status, 0 = Busy, 1 = Ready */
+#define FSR_E_ERR		BIT(5)	/* Erase operation status */
+#define FSR_P_ERR		BIT(4)	/* Program operation status */
+#define FSR_PT_ERR		BIT(1)	/* Protection error bit */
+
 static int micron_st_nor_octal_dtr_enable(struct spi_nor *nor, bool enable)
 {
 	struct spi_mem_op op;
@@ -273,6 +281,124 @@ static int micron_st_nor_set_4byte_addr_mode(struct spi_nor *nor, bool enable)
 	return spi_nor_write_disable(nor);
 }
 
+/**
+ * spi_nor_read_fsr() - Read the Flag Status Register.
+ * @nor:	pointer to 'struct spi_nor'
+ * @fsr:	pointer to a DMA-able buffer where the value of the
+ *              Flag Status Register will be written. Should be at least 2
+ *              bytes.
+ *
+ * Return: 0 on success, -errno otherwise.
+ */
+static int spi_nor_read_fsr(struct spi_nor *nor, u8 *fsr)
+{
+	int ret;
+
+	if (nor->spimem) {
+		struct spi_mem_op op =
+			SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_RDFSR, 0),
+				   SPI_MEM_OP_NO_ADDR,
+				   SPI_MEM_OP_NO_DUMMY,
+				   SPI_MEM_OP_DATA_IN(1, fsr, 0));
+
+		if (nor->reg_proto == SNOR_PROTO_8_8_8_DTR) {
+			op.addr.nbytes = nor->params->rdsr_addr_nbytes;
+			op.dummy.nbytes = nor->params->rdsr_dummy;
+			/*
+			 * We don't want to read only one byte in DTR mode. So,
+			 * read 2 and then discard the second byte.
+			 */
+			op.data.nbytes = 2;
+		}
+
+		spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);
+
+		ret = spi_mem_exec_op(nor->spimem, &op);
+	} else {
+		ret = spi_nor_controller_ops_read_reg(nor, SPINOR_OP_RDFSR, fsr,
+						      1);
+	}
+
+	if (ret)
+		dev_dbg(nor->dev, "error %d reading FSR\n", ret);
+
+	return ret;
+}
+
+/**
+ * spi_nor_clear_fsr() - Clear the Flag Status Register.
+ * @nor:	pointer to 'struct spi_nor'.
+ */
+static void spi_nor_clear_fsr(struct spi_nor *nor)
+{
+	int ret;
+
+	if (nor->spimem) {
+		struct spi_mem_op op =
+			SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_CLFSR, 0),
+				   SPI_MEM_OP_NO_ADDR,
+				   SPI_MEM_OP_NO_DUMMY,
+				   SPI_MEM_OP_NO_DATA);
+
+		spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);
+
+		ret = spi_mem_exec_op(nor->spimem, &op);
+	} else {
+		ret = spi_nor_controller_ops_write_reg(nor, SPINOR_OP_CLFSR,
+						       NULL, 0);
+	}
+
+	if (ret)
+		dev_dbg(nor->dev, "error %d clearing FSR\n", ret);
+}
+
+/**
+ * spi_nor_fsr_ready() - Query the Flag Status Register to see if the flash is
+ * ready for new commands.
+ * @nor:	pointer to 'struct spi_nor'.
+ *
+ * Return: 1 if ready, 0 if not ready, -errno on errors.
+ */
+static int spi_nor_fsr_ready(struct spi_nor *nor)
+{
+	int sr_ready, ret;
+
+	sr_ready = spi_nor_sr_ready(nor);
+	if (sr_ready < 0)
+		return sr_ready;
+
+	ret = spi_nor_read_fsr(nor, nor->bouncebuf);
+	if (ret)
+		return ret;
+
+	if (nor->bouncebuf[0] & (FSR_E_ERR | FSR_P_ERR)) {
+		if (nor->bouncebuf[0] & FSR_E_ERR)
+			dev_err(nor->dev, "Erase operation failed.\n");
+		else
+			dev_err(nor->dev, "Program operation failed.\n");
+
+		if (nor->bouncebuf[0] & FSR_PT_ERR)
+			dev_err(nor->dev,
+				"Attempted to modify a protected sector.\n");
+
+		spi_nor_clear_fsr(nor);
+
+		/*
+		 * WEL bit remains set to one when an erase or page program
+		 * error occurs. Issue a Write Disable command to protect
+		 * against inadvertent writes that can possibly corrupt the
+		 * contents of the memory.
+		 */
+		ret = spi_nor_write_disable(nor);
+		if (ret)
+			return ret;
+
+		return -EIO;
+	}
+
+	return sr_ready && !!(nor->bouncebuf[0] & FSR_READY);
+}
+
 static void micron_st_nor_default_init(struct spi_nor *nor)
 {
 	nor->flags |= SNOR_F_HAS_LOCK;
@@ -281,8 +407,15 @@ static void micron_st_nor_default_init(struct spi_nor *nor)
 	nor->params->set_4byte_addr_mode = micron_st_nor_set_4byte_addr_mode;
 }
 
+static void micron_st_nor_late_init(struct spi_nor *nor)
+{
+	if (nor->flags & SNOR_F_USE_FSR)
+		nor->params->ready = spi_nor_fsr_ready;
+}
+
 static const struct spi_nor_fixups micron_st_nor_fixups = {
 	.default_init = micron_st_nor_default_init,
+	.late_init = micron_st_nor_late_init,
 };
 
 const struct spi_nor_manufacturer spi_nor_micron = {
diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h
index b44b05a6f934..4622251a79ff 100644
--- a/include/linux/mtd/spi-nor.h
+++ b/include/linux/mtd/spi-nor.h
@@ -47,8 +47,6 @@
 #define SPINOR_OP_RDID		0x9f	/* Read JEDEC ID */
 #define SPINOR_OP_RDSFDP	0x5a	/* Read SFDP */
 #define SPINOR_OP_RDCR		0x35	/* Read configuration register */
-#define SPINOR_OP_RDFSR		0x70	/* Read flag status register */
-#define SPINOR_OP_CLFSR		0x50	/* Clear flag status register */
 #define SPINOR_OP_RDEAR		0xc8	/* Read Extended Address Register */
 #define SPINOR_OP_WREAR		0xc5	/* Write Extended Address Register */
 #define SPINOR_OP_SRSTEN	0x66	/* Software Reset Enable */
@@ -126,12 +124,6 @@
 /* Enhanced Volatile Configuration Register bits */
 #define EVCR_QUAD_EN_MICRON	BIT(7)	/* Micron Quad I/O */
 
-/* Flag Status Register bits */
-#define FSR_READY		BIT(7)	/* Device status, 0 = Busy, 1 = Ready */
-#define FSR_E_ERR		BIT(5)	/* Erase operation status */
-#define FSR_P_ERR		BIT(4)	/* Program operation status */
-#define FSR_PT_ERR		BIT(1)	/* Protection error bit */
-
 /* Status Register 2 bits. */
 #define SR2_QUAD_EN_BIT1	BIT(1)
 #define SR2_LB1			BIT(3)	/* Security Register Lock Bit 1 */
-- 
2.30.2

[PATCH v4 25/32] mtd: spi-nor: micron-st: convert USE_FSR to a manufacturer flag

[Michael Walle]

Now that all functions using that flag are local to the micron module,
we can convert the flag to a manufacturer one.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
---
 drivers/mtd/spi-nor/core.c      |  3 --
 drivers/mtd/spi-nor/core.h      |  3 --
 drivers/mtd/spi-nor/micron-st.c | 93 +++++++++++++++++++++------------
 3 files changed, 60 insertions(+), 39 deletions(-)

diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index 5b56d718692b..ac0faedebafe 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -2499,9 +2499,6 @@ static void spi_nor_init_flags(struct spi_nor *nor)
 
 	if (flags & USE_CLSR)
 		nor->flags |= SNOR_F_USE_CLSR;
-
-	if (flags & USE_FSR)
-		nor->flags |= SNOR_F_USE_FSR;
 }
 
 /**
diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h
index fabc01ae9a81..a02bf54289fb 100644
--- a/drivers/mtd/spi-nor/core.h
+++ b/drivers/mtd/spi-nor/core.h
@@ -12,7 +12,6 @@
 #define SPI_NOR_MAX_ID_LEN	6
 
 enum spi_nor_option_flags {
-	SNOR_F_USE_FSR		= BIT(0),
 	SNOR_F_HAS_SR_TB	= BIT(1),
 	SNOR_F_NO_OP_CHIP_ERASE	= BIT(2),
 	SNOR_F_USE_CLSR		= BIT(4),
@@ -349,7 +348,6 @@ struct spi_nor_fixups {
  *   NO_CHIP_ERASE:           chip does not support chip erase.
  *   SPI_NOR_NO_FR:           can't do fastread.
  *   USE_CLSR:                use CLSR command.
- *   USE_FSR:                 use flag status register
  *
  * @no_sfdp_flags:  flags that indicate support that can be discovered via SFDP.
  *                  Used when SFDP tables are not defined in the flash. These
@@ -401,7 +399,6 @@ struct flash_info {
 #define NO_CHIP_ERASE			BIT(7)
 #define SPI_NOR_NO_FR			BIT(8)
 #define USE_CLSR			BIT(9)
-#define USE_FSR				BIT(10)
 
 	u8 no_sfdp_flags;
 #define SPI_NOR_SKIP_SFDP		BIT(0)
diff --git a/drivers/mtd/spi-nor/micron-st.c b/drivers/mtd/spi-nor/micron-st.c
index 8877b122cf42..f693f8720541 100644
--- a/drivers/mtd/spi-nor/micron-st.c
+++ b/drivers/mtd/spi-nor/micron-st.c
@@ -8,6 +8,9 @@
 
 #include "core.h"
 
+/* flash_info mfr_flag. Used to read proprietary FSR register. */
+#define USE_FSR		BIT(0)
+
 #define SPINOR_OP_RDFSR		0x70	/* Read flag status register */
 #define SPINOR_OP_CLFSR		0x50	/* Clear flag status register */
 #define SPINOR_OP_MT_DTR_RD	0xfd	/* Fast Read opcode in DTR mode */
@@ -140,15 +143,17 @@ static const struct spi_nor_fixups mt35xu512aba_fixups = {
 
 static const struct flash_info micron_nor_parts[] = {
 	{ "mt35xu512aba", INFO(0x2c5b1a, 0, 128 * 1024, 512)
-		FLAGS(USE_FSR)
 		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_OCTAL_READ |
 			   SPI_NOR_OCTAL_DTR_READ | SPI_NOR_OCTAL_DTR_PP)
 		FIXUP_FLAGS(SPI_NOR_4B_OPCODES | SPI_NOR_IO_MODE_EN_VOLATILE)
-		.fixups = &mt35xu512aba_fixups},
+		MFR_FLAGS(USE_FSR)
+		.fixups = &mt35xu512aba_fixups
+	},
 	{ "mt35xu02g", INFO(0x2c5b1c, 0, 128 * 1024, 2048)
-		FLAGS(USE_FSR)
 		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_OCTAL_READ)
-		FIXUP_FLAGS(SPI_NOR_4B_OPCODES) },
+		FIXUP_FLAGS(SPI_NOR_4B_OPCODES)
+		MFR_FLAGS(USE_FSR)
+	},
 };
 
 static const struct flash_info st_nor_parts[] = {
@@ -164,57 +169,79 @@ static const struct flash_info st_nor_parts[] = {
 		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ) },
 	{ "n25q128a11",  INFO(0x20bb18, 0, 64 * 1024,  256)
 		FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP |
-		      SPI_NOR_BP3_SR_BIT6 | USE_FSR)
-		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ) },
+		      SPI_NOR_BP3_SR_BIT6)
+		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ)
+		MFR_FLAGS(USE_FSR)
+	},
 	{ "n25q128a13",  INFO(0x20ba18, 0, 64 * 1024,  256)
 		FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP |
-		      SPI_NOR_BP3_SR_BIT6 | USE_FSR)
-		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ) },
+		      SPI_NOR_BP3_SR_BIT6)
+		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ)
+		MFR_FLAGS(USE_FSR)
+	},
 	{ "mt25ql256a",  INFO6(0x20ba19, 0x104400, 64 * 1024,  512)
-		FLAGS(USE_FSR)
 		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
-		FIXUP_FLAGS(SPI_NOR_4B_OPCODES) },
+		FIXUP_FLAGS(SPI_NOR_4B_OPCODES)
+		MFR_FLAGS(USE_FSR)
+	},
 	{ "n25q256a",    INFO(0x20ba19, 0, 64 * 1024,  512)
-		FLAGS(USE_FSR)
 		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
-			      SPI_NOR_QUAD_READ) },
+			      SPI_NOR_QUAD_READ)
+		MFR_FLAGS(USE_FSR)
+	},
 	{ "mt25qu256a",  INFO6(0x20bb19, 0x104400, 64 * 1024,  512)
-		FLAGS(USE_FSR)
 		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
-		FIXUP_FLAGS(SPI_NOR_4B_OPCODES) },
+		FIXUP_FLAGS(SPI_NOR_4B_OPCODES)
+		MFR_FLAGS(USE_FSR)
+	},
 	{ "n25q256ax1",  INFO(0x20bb19, 0, 64 * 1024,  512)
-		FLAGS(USE_FSR)
-		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ) },
+		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ)
+		MFR_FLAGS(USE_FSR)
+	},
 	{ "mt25ql512a",  INFO6(0x20ba20, 0x104400, 64 * 1024, 1024)
-		FLAGS(USE_FSR)
 		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
-		FIXUP_FLAGS(SPI_NOR_4B_OPCODES) },
+		FIXUP_FLAGS(SPI_NOR_4B_OPCODES)
+		MFR_FLAGS(USE_FSR)
+	},
 	{ "n25q512ax3",  INFO(0x20ba20, 0, 64 * 1024, 1024)
 		FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP |
-		      SPI_NOR_BP3_SR_BIT6 | USE_FSR)
-		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ) },
+		      SPI_NOR_BP3_SR_BIT6)
+		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ)
+		MFR_FLAGS(USE_FSR)
+	},
 	{ "mt25qu512a",  INFO6(0x20bb20, 0x104400, 64 * 1024, 1024)
-		FLAGS(USE_FSR)
 		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
-		FIXUP_FLAGS(SPI_NOR_4B_OPCODES) },
+		FIXUP_FLAGS(SPI_NOR_4B_OPCODES)
+		MFR_FLAGS(USE_FSR)
+	},
 	{ "n25q512a",    INFO(0x20bb20, 0, 64 * 1024, 1024)
 		FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP |
-		      SPI_NOR_BP3_SR_BIT6 | USE_FSR)
-		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ) },
+		      SPI_NOR_BP3_SR_BIT6)
+		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ)
+		MFR_FLAGS(USE_FSR)
+	},
 	{ "n25q00",      INFO(0x20ba21, 0, 64 * 1024, 2048)
 		FLAGS(SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP |
-		      SPI_NOR_BP3_SR_BIT6 | NO_CHIP_ERASE | USE_FSR)
-		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ) },
+		      SPI_NOR_BP3_SR_BIT6 | NO_CHIP_ERASE)
+		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ)
+		MFR_FLAGS(USE_FSR)
+	},
 	{ "n25q00a",     INFO(0x20bb21, 0, 64 * 1024, 2048)
-		FLAGS(NO_CHIP_ERASE | USE_FSR)
-		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ) },
+		FLAGS(NO_CHIP_ERASE)
+		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ)
+		MFR_FLAGS(USE_FSR)
+	},
 	{ "mt25ql02g",   INFO(0x20ba22, 0, 64 * 1024, 4096)
-		FLAGS(NO_CHIP_ERASE | USE_FSR)
-		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ) },
+		FLAGS(NO_CHIP_ERASE)
+		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_QUAD_READ)
+		MFR_FLAGS(USE_FSR)
+	},
 	{ "mt25qu02g",   INFO(0x20bb22, 0, 64 * 1024, 4096)
-		FLAGS(NO_CHIP_ERASE | USE_FSR)
+		FLAGS(NO_CHIP_ERASE)
 		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
-			      SPI_NOR_QUAD_READ) },
+			      SPI_NOR_QUAD_READ)
+		MFR_FLAGS(USE_FSR)
+	},
 
 	{ "m25p05",  INFO(0x202010,  0,  32 * 1024,   2) },
 	{ "m25p10",  INFO(0x202011,  0,  32 * 1024,   4) },
@@ -409,7 +436,7 @@ static void micron_st_nor_default_init(struct spi_nor *nor)
 
 static void micron_st_nor_late_init(struct spi_nor *nor)
 {
-	if (nor->flags & SNOR_F_USE_FSR)
+	if (nor->info->mfr_flags & USE_FSR)
 		nor->params->ready = spi_nor_fsr_ready;
 }
 
-- 
2.30.2

[PATCH v4 26/32] mtd: spi-nor: micron-st: rename vendor specific functions and defines

[Michael Walle]

Drop the generic spi_nor prefix for all the micron-st functions.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/micron-st.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/mtd/spi-nor/micron-st.c b/drivers/mtd/spi-nor/micron-st.c
index f693f8720541..de450495e1ab 100644
--- a/drivers/mtd/spi-nor/micron-st.c
+++ b/drivers/mtd/spi-nor/micron-st.c
@@ -309,7 +309,7 @@ static int micron_st_nor_set_4byte_addr_mode(struct spi_nor *nor, bool enable)
 }
 
 /**
- * spi_nor_read_fsr() - Read the Flag Status Register.
+ * micron_st_nor_read_fsr() - Read the Flag Status Register.
  * @nor:	pointer to 'struct spi_nor'
  * @fsr:	pointer to a DMA-able buffer where the value of the
  *              Flag Status Register will be written. Should be at least 2
@@ -317,7 +317,7 @@ static int micron_st_nor_set_4byte_addr_mode(struct spi_nor *nor, bool enable)
  *
  * Return: 0 on success, -errno otherwise.
  */
-static int spi_nor_read_fsr(struct spi_nor *nor, u8 *fsr)
+static int micron_st_nor_read_fsr(struct spi_nor *nor, u8 *fsr)
 {
 	int ret;
 
@@ -353,10 +353,10 @@ static int spi_nor_read_fsr(struct spi_nor *nor, u8 *fsr)
 }
 
 /**
- * spi_nor_clear_fsr() - Clear the Flag Status Register.
+ * micron_st_nor_clear_fsr() - Clear the Flag Status Register.
  * @nor:	pointer to 'struct spi_nor'.
  */
-static void spi_nor_clear_fsr(struct spi_nor *nor)
+static void micron_st_nor_clear_fsr(struct spi_nor *nor)
 {
 	int ret;
 
@@ -380,13 +380,13 @@ static void spi_nor_clear_fsr(struct spi_nor *nor)
 }
 
 /**
- * spi_nor_fsr_ready() - Query the Flag Status Register to see if the flash is
- * ready for new commands.
+ * micron_st_nor_fsr_ready() - Query the Flag Status Register to see if the
+ * flash is ready for new commands.
  * @nor:	pointer to 'struct spi_nor'.
  *
  * Return: 1 if ready, 0 if not ready, -errno on errors.
  */
-static int spi_nor_fsr_ready(struct spi_nor *nor)
+static int micron_st_nor_fsr_ready(struct spi_nor *nor)
 {
 	int sr_ready, ret;
 
@@ -394,7 +394,7 @@ static int spi_nor_fsr_ready(struct spi_nor *nor)
 	if (sr_ready < 0)
 		return sr_ready;
 
-	ret = spi_nor_read_fsr(nor, nor->bouncebuf);
+	ret = micron_st_nor_read_fsr(nor, nor->bouncebuf);
 	if (ret)
 		return ret;
 
@@ -408,7 +408,7 @@ static int spi_nor_fsr_ready(struct spi_nor *nor)
 			dev_err(nor->dev,
 				"Attempted to modify a protected sector.\n");
 
-		spi_nor_clear_fsr(nor);
+		micron_st_nor_clear_fsr(nor);
 
 		/*
 		 * WEL bit remains set to one when an erase or page program
@@ -437,7 +437,7 @@ static void micron_st_nor_default_init(struct spi_nor *nor)
 static void micron_st_nor_late_init(struct spi_nor *nor)
 {
 	if (nor->info->mfr_flags & USE_FSR)
-		nor->params->ready = spi_nor_fsr_ready;
+		nor->params->ready = micron_st_nor_fsr_ready;
 }
 
 static const struct spi_nor_fixups micron_st_nor_fixups = {
-- 
2.30.2

[PATCH v4 27/32] mtd: spi-nor: spansion: slightly rework control flow in late_init()

[Michael Walle]

Don't return early when the flash is smaller than or equal to 16MiB. We
need to be able to register hooks for all sizes of flashes. This also has
the benefit that it increases the readability of the code because the
action, i.e. registering the fixups, is connected to the condition, i.e.
flashes larger than 16MiB.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
---
 drivers/mtd/spi-nor/spansion.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/mtd/spi-nor/spansion.c b/drivers/mtd/spi-nor/spansion.c
index 5affa8ae43a7..1a0e7214d9e5 100644
--- a/drivers/mtd/spi-nor/spansion.c
+++ b/drivers/mtd/spi-nor/spansion.c
@@ -296,13 +296,12 @@ static const struct flash_info spansion_nor_parts[] = {
 
 static void spansion_nor_late_init(struct spi_nor *nor)
 {
-	if (nor->params->size <= SZ_16M)
-		return;
-
-	nor->flags |= SNOR_F_4B_OPCODES;
-	/* No small sector erase for 4-byte command set */
-	nor->erase_opcode = SPINOR_OP_SE;
-	nor->mtd.erasesize = nor->info->sector_size;
+	if (nor->params->size > SZ_16M) {
+		nor->flags |= SNOR_F_4B_OPCODES;
+		/* No small sector erase for 4-byte command set */
+		nor->erase_opcode = SPINOR_OP_SE;
+		nor->mtd.erasesize = nor->info->sector_size;
+	}
 }
 
 static const struct spi_nor_fixups spansion_nor_fixups = {
-- 
2.30.2

[PATCH v4 28/32] mtd: spi-nor: move all spansion specifics into spansion.c

[Michael Walle]

The clear status register flags is only available on spansion flashes.
Move all the functions around that into the spanion module.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/core.c     | 49 ------------------------
 drivers/mtd/spi-nor/spansion.c | 70 ++++++++++++++++++++++++++++++++++
 include/linux/mtd/spi-nor.h    |  1 -
 3 files changed, 70 insertions(+), 50 deletions(-)

diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index ac0faedebafe..e2b8b0a438ce 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -554,33 +554,6 @@ int spi_nor_write_ear(struct spi_nor *nor, u8 ear)
 	return ret;
 }
 
-/**
- * spi_nor_clear_sr() - Clear the Status Register.
- * @nor:	pointer to 'struct spi_nor'.
- */
-static void spi_nor_clear_sr(struct spi_nor *nor)
-{
-	int ret;
-
-	if (nor->spimem) {
-		struct spi_mem_op op =
-			SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_CLSR, 0),
-				   SPI_MEM_OP_NO_ADDR,
-				   SPI_MEM_OP_NO_DUMMY,
-				   SPI_MEM_OP_NO_DATA);
-
-		spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);
-
-		ret = spi_mem_exec_op(nor->spimem, &op);
-	} else {
-		ret = spi_nor_controller_ops_write_reg(nor, SPINOR_OP_CLSR,
-						       NULL, 0);
-	}
-
-	if (ret)
-		dev_dbg(nor->dev, "error %d clearing SR\n", ret);
-}
-
 /**
  * spi_nor_sr_ready() - Query the Status Register to see if the flash is ready
  * for new commands.
@@ -595,28 +568,6 @@ int spi_nor_sr_ready(struct spi_nor *nor)
 	if (ret)
 		return ret;
 
-	if (nor->flags & SNOR_F_USE_CLSR &&
-	    nor->bouncebuf[0] & (SR_E_ERR | SR_P_ERR)) {
-		if (nor->bouncebuf[0] & SR_E_ERR)
-			dev_err(nor->dev, "Erase Error occurred\n");
-		else
-			dev_err(nor->dev, "Programming Error occurred\n");
-
-		spi_nor_clear_sr(nor);
-
-		/*
-		 * WEL bit remains set to one when an erase or page program
-		 * error occurs. Issue a Write Disable command to protect
-		 * against inadvertent writes that can possibly corrupt the
-		 * contents of the memory.
-		 */
-		ret = spi_nor_write_disable(nor);
-		if (ret)
-			return ret;
-
-		return -EIO;
-	}
-
 	return !(nor->bouncebuf[0] & SR_WIP);
 }
 
diff --git a/drivers/mtd/spi-nor/spansion.c b/drivers/mtd/spi-nor/spansion.c
index 1a0e7214d9e5..38eeb0913ab2 100644
--- a/drivers/mtd/spi-nor/spansion.c
+++ b/drivers/mtd/spi-nor/spansion.c
@@ -8,6 +8,7 @@
 
 #include "core.h"
 
+#define SPINOR_OP_CLSR		0x30	/* Clear status register 1 */
 #define SPINOR_OP_RD_ANY_REG			0x65	/* Read any register */
 #define SPINOR_OP_WR_ANY_REG			0x71	/* Write any register */
 #define SPINOR_REG_CYPRESS_CFR2V		0x00800003
@@ -294,6 +295,72 @@ static const struct flash_info spansion_nor_parts[] = {
 	},
 };
 
+/**
+ * spi_nor_clear_sr() - Clear the Status Register.
+ * @nor:	pointer to 'struct spi_nor'.
+ */
+static void spi_nor_clear_sr(struct spi_nor *nor)
+{
+	int ret;
+
+	if (nor->spimem) {
+		struct spi_mem_op op =
+			SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_CLSR, 0),
+				   SPI_MEM_OP_NO_ADDR,
+				   SPI_MEM_OP_NO_DUMMY,
+				   SPI_MEM_OP_NO_DATA);
+
+		spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);
+
+		ret = spi_mem_exec_op(nor->spimem, &op);
+	} else {
+		ret = spi_nor_controller_ops_write_reg(nor, SPINOR_OP_CLSR,
+						       NULL, 0);
+	}
+
+	if (ret)
+		dev_dbg(nor->dev, "error %d clearing SR\n", ret);
+}
+
+/**
+ * spi_nor_sr_ready_and_clear() - Query the Status Register to see if the flash
+ * is ready for new commands and clear it.
+ * @nor:	pointer to 'struct spi_nor'.
+ *
+ * Return: 1 if ready, 0 if not ready, -errno on errors.
+ */
+static int spi_nor_sr_ready_and_clear(struct spi_nor *nor)
+{
+	int ret;
+
+	ret = spi_nor_read_sr(nor, nor->bouncebuf);
+	if (ret)
+		return ret;
+
+	if (nor->bouncebuf[0] & (SR_E_ERR | SR_P_ERR)) {
+		if (nor->bouncebuf[0] & SR_E_ERR)
+			dev_err(nor->dev, "Erase Error occurred\n");
+		else
+			dev_err(nor->dev, "Programming Error occurred\n");
+
+		spi_nor_clear_sr(nor);
+
+		/*
+		 * WEL bit remains set to one when an erase or page program
+		 * error occurs. Issue a Write Disable command to protect
+		 * against inadvertent writes that can possibly corrupt the
+		 * contents of the memory.
+		 */
+		ret = spi_nor_write_disable(nor);
+		if (ret)
+			return ret;
+
+		return -EIO;
+	}
+
+	return !(nor->bouncebuf[0] & SR_WIP);
+}
+
 static void spansion_nor_late_init(struct spi_nor *nor)
 {
 	if (nor->params->size > SZ_16M) {
@@ -302,6 +369,9 @@ static void spansion_nor_late_init(struct spi_nor *nor)
 		nor->erase_opcode = SPINOR_OP_SE;
 		nor->mtd.erasesize = nor->info->sector_size;
 	}
+
+	if (nor->flags & SNOR_F_USE_CLSR)
+		nor->params->ready = spi_nor_sr_ready_and_clear;
 }
 
 static const struct spi_nor_fixups spansion_nor_fixups = {
diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h
index 4622251a79ff..5e25a7b75ae2 100644
--- a/include/linux/mtd/spi-nor.h
+++ b/include/linux/mtd/spi-nor.h
@@ -90,7 +90,6 @@
 
 /* Used for Spansion flashes only. */
 #define SPINOR_OP_BRWR		0x17	/* Bank register write */
-#define SPINOR_OP_CLSR		0x30	/* Clear status register 1 */
 
 /* Used for Micron flashes only. */
 #define SPINOR_OP_RD_EVCR      0x65    /* Read EVCR register */
-- 
2.30.2

[PATCH v4 29/32] mtd: spi-nor: spansion: convert USE_CLSR to a manufacturer flag

[Michael Walle]

Now that all functions using that flag are local to the spansion module,
we can convert the flag to a manufacturer one.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
---
 drivers/mtd/spi-nor/core.c     |  3 --
 drivers/mtd/spi-nor/core.h     |  3 --
 drivers/mtd/spi-nor/spansion.c | 55 +++++++++++++++++++++-------------
 3 files changed, 34 insertions(+), 27 deletions(-)

diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index e2b8b0a438ce..f5a2f37d140e 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -2447,9 +2447,6 @@ static void spi_nor_init_flags(struct spi_nor *nor)
 
 	if (flags & NO_CHIP_ERASE)
 		nor->flags |= SNOR_F_NO_OP_CHIP_ERASE;
-
-	if (flags & USE_CLSR)
-		nor->flags |= SNOR_F_USE_CLSR;
 }
 
 /**
diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h
index a02bf54289fb..2130a96e2044 100644
--- a/drivers/mtd/spi-nor/core.h
+++ b/drivers/mtd/spi-nor/core.h
@@ -14,7 +14,6 @@
 enum spi_nor_option_flags {
 	SNOR_F_HAS_SR_TB	= BIT(1),
 	SNOR_F_NO_OP_CHIP_ERASE	= BIT(2),
-	SNOR_F_USE_CLSR		= BIT(4),
 	SNOR_F_BROKEN_RESET	= BIT(5),
 	SNOR_F_4B_OPCODES	= BIT(6),
 	SNOR_F_HAS_4BAIT	= BIT(7),
@@ -347,7 +346,6 @@ struct spi_nor_fixups {
  *   SPI_NOR_NO_ERASE:        no erase command needed.
  *   NO_CHIP_ERASE:           chip does not support chip erase.
  *   SPI_NOR_NO_FR:           can't do fastread.
- *   USE_CLSR:                use CLSR command.
  *
  * @no_sfdp_flags:  flags that indicate support that can be discovered via SFDP.
  *                  Used when SFDP tables are not defined in the flash. These
@@ -398,7 +396,6 @@ struct flash_info {
 #define SPI_NOR_NO_ERASE		BIT(6)
 #define NO_CHIP_ERASE			BIT(7)
 #define SPI_NOR_NO_FR			BIT(8)
-#define USE_CLSR			BIT(9)
 
 	u8 no_sfdp_flags;
 #define SPI_NOR_SKIP_SFDP		BIT(0)
diff --git a/drivers/mtd/spi-nor/spansion.c b/drivers/mtd/spi-nor/spansion.c
index 38eeb0913ab2..3606291d421c 100644
--- a/drivers/mtd/spi-nor/spansion.c
+++ b/drivers/mtd/spi-nor/spansion.c
@@ -8,6 +8,9 @@
 
 #include "core.h"
 
+/* flash_info mfr_flag. Used to clear sticky prorietary SR bits. */
+#define USE_CLSR	BIT(0)
+
 #define SPINOR_OP_CLSR		0x30	/* Clear status register 1 */
 #define SPINOR_OP_RD_ANY_REG			0x65	/* Read any register */
 #define SPINOR_OP_WR_ANY_REG			0x71	/* Write any register */
@@ -212,43 +215,53 @@ static const struct flash_info spansion_nor_parts[] = {
 	{ "s25sl064p",  INFO(0x010216, 0x4d00,  64 * 1024, 128)
 		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
 	{ "s25fl128s0", INFO6(0x012018, 0x4d0080, 256 * 1024, 64)
-		FLAGS(USE_CLSR)
-		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
+		MFR_FLAGS(USE_CLSR)
+	},
 	{ "s25fl128s1", INFO6(0x012018, 0x4d0180, 64 * 1024, 256)
-		FLAGS(USE_CLSR)
-		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
+		MFR_FLAGS(USE_CLSR)
+	},
 	{ "s25fl256s0", INFO6(0x010219, 0x4d0080, 256 * 1024, 128)
-		FLAGS(USE_CLSR)
 		NO_SFDP_FLAGS(SPI_NOR_SKIP_SFDP | SPI_NOR_DUAL_READ |
-			      SPI_NOR_QUAD_READ) },
+			      SPI_NOR_QUAD_READ)
+		MFR_FLAGS(USE_CLSR)
+	},
 	{ "s25fl256s1", INFO6(0x010219, 0x4d0180, 64 * 1024, 512)
-		FLAGS(USE_CLSR)
-		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
+		MFR_FLAGS(USE_CLSR)
+	},
 	{ "s25fl512s",  INFO6(0x010220, 0x4d0080, 256 * 1024, 256)
-		FLAGS(SPI_NOR_HAS_LOCK | USE_CLSR)
-		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+		FLAGS(SPI_NOR_HAS_LOCK)
+		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
+		MFR_FLAGS(USE_CLSR)
+	},
 	{ "s25fs128s1", INFO6(0x012018, 0x4d0181, 64 * 1024, 256)
-		FLAGS(USE_CLSR)
 		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
+		MFR_FLAGS(USE_CLSR)
 		.fixups = &s25fs_s_nor_fixups, },
 	{ "s25fs256s0", INFO6(0x010219, 0x4d0081, 256 * 1024, 128)
-		FLAGS(USE_CLSR)
-		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
+		MFR_FLAGS(USE_CLSR)
+	},
 	{ "s25fs256s1", INFO6(0x010219, 0x4d0181, 64 * 1024, 512)
-		FLAGS(USE_CLSR)
-		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
+		MFR_FLAGS(USE_CLSR)
+	},
 	{ "s25fs512s",  INFO6(0x010220, 0x4d0081, 256 * 1024, 256)
-		FLAGS(USE_CLSR)
 		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
+		MFR_FLAGS(USE_CLSR)
 		.fixups = &s25fs_s_nor_fixups, },
 	{ "s25sl12800", INFO(0x012018, 0x0300, 256 * 1024,  64) },
 	{ "s25sl12801", INFO(0x012018, 0x0301,  64 * 1024, 256) },
 	{ "s25fl129p0", INFO(0x012018, 0x4d00, 256 * 1024,  64)
-		FLAGS(USE_CLSR)
-		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
+		MFR_FLAGS(USE_CLSR)
+	},
 	{ "s25fl129p1", INFO(0x012018, 0x4d01,  64 * 1024, 256)
-		FLAGS(USE_CLSR)
-		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
+		MFR_FLAGS(USE_CLSR)
+	},
 	{ "s25sl004a",  INFO(0x010212,      0,  64 * 1024,   8) },
 	{ "s25sl008a",  INFO(0x010213,      0,  64 * 1024,  16) },
 	{ "s25sl016a",  INFO(0x010214,      0,  64 * 1024,  32) },
@@ -370,7 +383,7 @@ static void spansion_nor_late_init(struct spi_nor *nor)
 		nor->mtd.erasesize = nor->info->sector_size;
 	}
 
-	if (nor->flags & SNOR_F_USE_CLSR)
+	if (nor->info->mfr_flags & USE_CLSR)
 		nor->params->ready = spi_nor_sr_ready_and_clear;
 }
 
-- 
2.30.2

[PATCH v4 30/32] mtd: spi-nor: spansion: rename vendor specific functions and defines

[Michael Walle]

Drop the generic spi_nor prefix for all the spansion functions.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/spansion.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/mtd/spi-nor/spansion.c b/drivers/mtd/spi-nor/spansion.c
index 3606291d421c..0b5cbfa57221 100644
--- a/drivers/mtd/spi-nor/spansion.c
+++ b/drivers/mtd/spi-nor/spansion.c
@@ -309,10 +309,10 @@ static const struct flash_info spansion_nor_parts[] = {
 };
 
 /**
- * spi_nor_clear_sr() - Clear the Status Register.
+ * spansion_nor_clear_sr() - Clear the Status Register.
  * @nor:	pointer to 'struct spi_nor'.
  */
-static void spi_nor_clear_sr(struct spi_nor *nor)
+static void spansion_nor_clear_sr(struct spi_nor *nor)
 {
 	int ret;
 
@@ -336,13 +336,13 @@ static void spi_nor_clear_sr(struct spi_nor *nor)
 }
 
 /**
- * spi_nor_sr_ready_and_clear() - Query the Status Register to see if the flash
- * is ready for new commands and clear it.
+ * spansion_nor_sr_ready_and_clear() - Query the Status Register to see if the
+ * flash is ready for new commands and clear it.
  * @nor:	pointer to 'struct spi_nor'.
  *
  * Return: 1 if ready, 0 if not ready, -errno on errors.
  */
-static int spi_nor_sr_ready_and_clear(struct spi_nor *nor)
+static int spansion_nor_sr_ready_and_clear(struct spi_nor *nor)
 {
 	int ret;
 
@@ -356,7 +356,7 @@ static int spi_nor_sr_ready_and_clear(struct spi_nor *nor)
 		else
 			dev_err(nor->dev, "Programming Error occurred\n");
 
-		spi_nor_clear_sr(nor);
+		spansion_nor_clear_sr(nor);
 
 		/*
 		 * WEL bit remains set to one when an erase or page program
@@ -384,7 +384,7 @@ static void spansion_nor_late_init(struct spi_nor *nor)
 	}
 
 	if (nor->info->mfr_flags & USE_CLSR)
-		nor->params->ready = spi_nor_sr_ready_and_clear;
+		nor->params->ready = spansion_nor_sr_ready_and_clear;
 }
 
 static const struct spi_nor_fixups spansion_nor_fixups = {
-- 
2.30.2

[PATCH v4 31/32] mtd: spi-nor: slightly change code style in spi_nor_sr_ready()

[Michael Walle]

Now that there is almost no special case code left in
spi_nor_sr_ready(), the return check looks odd. Move the function call
closer to the return code checking.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 drivers/mtd/spi-nor/core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index f5a2f37d140e..9014008e60b3 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -563,8 +563,9 @@ int spi_nor_write_ear(struct spi_nor *nor, u8 ear)
  */
 int spi_nor_sr_ready(struct spi_nor *nor)
 {
-	int ret = spi_nor_read_sr(nor, nor->bouncebuf);
+	int ret;
 
+	ret = spi_nor_read_sr(nor, nor->bouncebuf);
 	if (ret)
 		return ret;
 
-- 
2.30.2

[PATCH v4 32/32] mtd: spi-nor: renumber flags

[Michael Walle]

As we have deleted some flag, lets renumber them so there are no holes.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
---
 drivers/mtd/spi-nor/core.h | 28 ++++++++++++++--------------
 1 file changed, 14 insertions(+), 14 deletions(-)

diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h
index 2130a96e2044..b7fd760e3b47 100644
--- a/drivers/mtd/spi-nor/core.h
+++ b/drivers/mtd/spi-nor/core.h
@@ -12,20 +12,20 @@
 #define SPI_NOR_MAX_ID_LEN	6
 
 enum spi_nor_option_flags {
-	SNOR_F_HAS_SR_TB	= BIT(1),
-	SNOR_F_NO_OP_CHIP_ERASE	= BIT(2),
-	SNOR_F_BROKEN_RESET	= BIT(5),
-	SNOR_F_4B_OPCODES	= BIT(6),
-	SNOR_F_HAS_4BAIT	= BIT(7),
-	SNOR_F_HAS_LOCK		= BIT(8),
-	SNOR_F_HAS_16BIT_SR	= BIT(9),
-	SNOR_F_NO_READ_CR	= BIT(10),
-	SNOR_F_HAS_SR_TB_BIT6	= BIT(11),
-	SNOR_F_HAS_4BIT_BP      = BIT(12),
-	SNOR_F_HAS_SR_BP3_BIT6  = BIT(13),
-	SNOR_F_IO_MODE_EN_VOLATILE = BIT(14),
-	SNOR_F_SOFT_RESET	= BIT(15),
-	SNOR_F_SWP_IS_VOLATILE	= BIT(16),
+	SNOR_F_HAS_SR_TB	= BIT(0),
+	SNOR_F_NO_OP_CHIP_ERASE	= BIT(1),
+	SNOR_F_BROKEN_RESET	= BIT(2),
+	SNOR_F_4B_OPCODES	= BIT(3),
+	SNOR_F_HAS_4BAIT	= BIT(4),
+	SNOR_F_HAS_LOCK		= BIT(5),
+	SNOR_F_HAS_16BIT_SR	= BIT(6),
+	SNOR_F_NO_READ_CR	= BIT(7),
+	SNOR_F_HAS_SR_TB_BIT6	= BIT(8),
+	SNOR_F_HAS_4BIT_BP      = BIT(9),
+	SNOR_F_HAS_SR_BP3_BIT6  = BIT(10),
+	SNOR_F_IO_MODE_EN_VOLATILE = BIT(11),
+	SNOR_F_SOFT_RESET	= BIT(12),
+	SNOR_F_SWP_IS_VOLATILE	= BIT(13),
 };
 
 struct spi_nor_read_command {
-- 
2.30.2

Re: [PATCH v4 01/32] mtd: spi-nor: atmel: unify function names

[Pratyush Yadav]

On 21/02/22 01:07PM, Michael Walle wrote:
> To avoid name clashes unify all the function and static object names and
> use one of the following prefixes which should be sufficiently unique:
>  - <vendor>_nor_
>  - <flash_family>_nor_
>  - <flash_part>_

Shouldn't this be "<flash_part>_nor_"?

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 01/32] mtd: spi-nor: atmel: unify function names

[Michael Walle]

Am 2022-02-22 08:23, schrieb Pratyush Yadav:
> On 21/02/22 01:07PM, Michael Walle wrote:
>> To avoid name clashes unify all the function and static object names 
>> and
>> use one of the following prefixes which should be sufficiently unique:
>>  - <vendor>_nor_
>>  - <flash_family>_nor_
>>  - <flash_part>_
> 
> Shouldn't this be "<flash_part>_nor_"?

No, a part name is already unique and its the same "style" as spi nand
is doing it.

-michael

Re: [PATCH v4 20/32] mtd: spi-nor: guard _page_size parameter in S3AN_INFO()

[Pratyush Yadav]

On 21/02/22 01:07PM, Michael Walle wrote:
> The _page_size marco parameter was missing parentheses around it. Add
> them.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>

Reviewed-by: Pratyush Yadav <p.yadav@ti.com>

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 00/32] mtd: spi-nor: move vendor specific code into vendor modules

[Tudor.Ambarus]

I would like some tested-by tags if possible. At least with a micron and a spansion flash.
I think I have a micron and a spansion somewhere, I'll try to do a short test too.

Cheers,
ta

Re: [PATCH v4 00/32] mtd: spi-nor: move vendor specific code into vendor modules

[Pratyush Yadav]

On 22/02/22 08:59AM, Tudor.Ambarus@microchip.com wrote:
> I would like some tested-by tags if possible. At least with a micron and a spansion flash.
> I think I have a micron and a spansion somewhere, I'll try to do a short test too.

I still have some patches left to review in this series. But in the 
meantime, I have tested it on a Micron and Spansion flash. Ran through a 
few Erase/Program/Read cycles.

Tested-by: Pratyush Yadav <p.yadav@ti.com> # on mt35xu512aba, s28hs512t

> 
> Cheers,
> ta

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 01/32] mtd: spi-nor: atmel: unify function names

[Pratyush Yadav]

On 22/02/22 08:26AM, Michael Walle wrote:
> Am 2022-02-22 08:23, schrieb Pratyush Yadav:
> > On 21/02/22 01:07PM, Michael Walle wrote:
> > > To avoid name clashes unify all the function and static object names
> > > and
> > > use one of the following prefixes which should be sufficiently unique:
> > >  - <vendor>_nor_
> > >  - <flash_family>_nor_
> > >  - <flash_part>_
> > 
> > Shouldn't this be "<flash_part>_nor_"?
> 
> No, a part name is already unique and its the same "style" as spi nand
> is doing it.

Okay. Fine by me.

I have not went and checked every single function changed. I trust you 
to get them right.

Acked-by: Pratyush Yadav <p.yadav@ti.com>

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 02/32] mtd: spi-nor: catalyst: unify function names

[Pratyush Yadav]

On 21/02/22 01:07PM, Michael Walle wrote:
> To avoid name clashes unify all the function and static object names and
> use one of the following prefixes which should be sufficiently unique:
>  - <vendor>_nor_
>  - <flash_family>_nor_
>  - <flash_part>_
> 
> There are no functional changes.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>

Acked-by: Pratyush Yadav <p.yadav@ti.com>

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 03/32] mtd: spi-nor: eon: unify function names

[Pratyush Yadav]

On 21/02/22 01:07PM, Michael Walle wrote:
> To avoid name clashes unify all the function and static object names and
> use one of the following prefixes which should be sufficiently unique:
>  - <vendor>_nor_
>  - <flash_family>_nor_
>  - <flash_part>_
> 
> There are no functional changes.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>

Acked-by: Pratyush Yadav <p.yadav@ti.com>

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 04/32] mtd: spi-nor: esmt: unify function names

[Pratyush Yadav]

On 21/02/22 01:07PM, Michael Walle wrote:
> To avoid name clashes unify all the function and static object names and
> use one of the following prefixes which should be sufficiently unique:
>  - <vendor>_nor_
>  - <flash_family>_nor_
>  - <flash_part>_
> 
> There are no functional changes.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>

Acked-by: Pratyush Yadav <p.yadav@ti.com>

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 05/32] mtd: spi-nor: everspin: unify function names

[Pratyush Yadav]

On 21/02/22 01:07PM, Michael Walle wrote:
> To avoid name clashes unify all the function and static object names and
> use one of the following prefixes which should be sufficiently unique:
>  - <vendor>_nor_
>  - <flash_family>_nor_
>  - <flash_part>_
> 
> There are no functional changes.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>

Acked-by: Pratyush Yadav <p.yadav@ti.com>

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 06/32] mtd: spi-nor: fujitsu: unify function names

[Pratyush Yadav]

On 21/02/22 01:07PM, Michael Walle wrote:
> To avoid name clashes unify all the function and static object names and
> use one of the following prefixes which should be sufficiently unique:
>  - <vendor>_nor_
>  - <flash_family>_nor_
>  - <flash_part>_
> 
> There are no functional changes.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>

Acked-by: Pratyush Yadav <p.yadav@ti.com>

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 07/32] mtd: spi-nor: gigadevice: unify function names

[Pratyush Yadav]

On 21/02/22 01:07PM, Michael Walle wrote:
> To avoid name clashes unify all the function and static object names and
> use one of the following prefixes which should be sufficiently unique:
>  - <vendor>_nor_
>  - <flash_family>_nor_
>  - <flash_part>_
> 
> There are no functional changes.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>

Acked-by: Pratyush Yadav <p.yadav@ti.com>

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 08/32] mtd: spi-nor: intel: unify function names

[Pratyush Yadav]

On 21/02/22 01:07PM, Michael Walle wrote:
> To avoid name clashes unify all the function and static object names and
> use one of the following prefixes which should be sufficiently unique:
>  - <vendor>_nor_
>  - <flash_family>_nor_
>  - <flash_part>_
> 
> There are no functional changes.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>

Acked-by: Pratyush Yadav <p.yadav@ti.com>

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 09/32] mtd: spi-nor: issi: unify function names

[Pratyush Yadav]

On 21/02/22 01:07PM, Michael Walle wrote:
> To avoid name clashes unify all the function and static object names and
> use one of the following prefixes which should be sufficiently unique:
>  - <vendor>_nor_
>  - <flash_family>_nor_
>  - <flash_part>_
> 
> There are no functional changes.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>

Acked-by: Pratyush Yadav <p.yadav@ti.com>

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 10/32] mtd: spi-nor: macronix: unify function names

[Pratyush Yadav]

On 21/02/22 01:07PM, Michael Walle wrote:
> To avoid name clashes unify all the function and static object names and
> use one of the following prefixes which should be sufficiently unique:
>  - <vendor>_nor_
>  - <flash_family>_nor_
>  - <flash_part>_
> 
> There are no functional changes.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>

Acked-by: Pratyush Yadav <p.yadav@ti.com>

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 11/32] mtd: spi-nor: micron-st: unify function names

[Pratyush Yadav]

On 21/02/22 01:07PM, Michael Walle wrote:
> To avoid name clashes unify all the function and static object names and
> use one of the following prefixes which should be sufficiently unique:
>  - <vendor>_nor_
>  - <flash_family>_nor_
>  - <flash_part>_
> 
> There are no functional changes.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>

Acked-by: Pratyush Yadav <p.yadav@ti.com>

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 12/32] mtd: spi-nor: spansion: unify function names

[Pratyush Yadav]

On 21/02/22 01:07PM, Michael Walle wrote:
> To avoid name clashes unify all the function and static object names and
> use one of the following prefixes which should be sufficiently unique:
>  - <vendor>_nor_
>  - <flash_family>_nor_
>  - <flash_part>_
> 
> There are no functional changes.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>

Acked-by: Pratyush Yadav <p.yadav@ti.com>

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 13/32] mtd: spi-nor: sst: unify function names

[Pratyush Yadav]

On 21/02/22 01:07PM, Michael Walle wrote:
> To avoid name clashes unify all the function and static object names and
> use one of the following prefixes which should be sufficiently unique:
>  - <vendor>_nor_
>  - <flash_family>_nor_
>  - <flash_part>_
> 
> There are no functional changes.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>

Acked-by: Pratyush Yadav <p.yadav@ti.com>

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 14/32] mtd: spi-nor: winbond: unify function names

[Pratyush Yadav]

On 21/02/22 01:07PM, Michael Walle wrote:
> To avoid name clashes unify all the function and static object names and
> use one of the following prefixes which should be sufficiently unique:
>  - <vendor>_nor_
>  - <flash_family>_nor_
>  - <flash_part>_
> 
> There are no functional changes.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>

Acked-by: Pratyush Yadav <p.yadav@ti.com>

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 15/32] mtd: spi-nor: xilinx: unify function names

[Pratyush Yadav]

On 21/02/22 01:07PM, Michael Walle wrote:
> To avoid name clashes unify all the function and static object names and
> use one of the following prefixes which should be sufficiently unique:
>  - <vendor>_nor_
>  - <flash_family>_nor_
>  - <flash_part>_
> 
> There are no functional changes.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>

Acked-by: Pratyush Yadav <p.yadav@ti.com>

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 16/32] mtd: spi-nor: xmc: unify function names

[Pratyush Yadav]

On 21/02/22 01:07PM, Michael Walle wrote:
> To avoid name clashes unify all the function and static object names and
> use one of the following prefixes which should be sufficiently unique:
>  - <vendor>_nor_
>  - <flash_family>_nor_
>  - <flash_part>_
> 
> There are no functional changes.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>

Acked-by: Pratyush Yadav <p.yadav@ti.com>

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 22/32] mtd: spi-nor: xilinx: rename vendor specific functions and defines

[Pratyush Yadav]

On 21/02/22 01:07PM, Michael Walle wrote:
> Drop the generic spi_nor prefix for all the xilinx functions.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>

Reviewed-by: Pratyush Yadav <p.yadav@ti.com>

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 26/32] mtd: spi-nor: micron-st: rename vendor specific functions and defines

[Pratyush Yadav]

On 21/02/22 01:08PM, Michael Walle wrote:
> Drop the generic spi_nor prefix for all the micron-st functions.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>
> ---
>  drivers/mtd/spi-nor/micron-st.c | 20 ++++++++++----------
>  1 file changed, 10 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/mtd/spi-nor/micron-st.c b/drivers/mtd/spi-nor/micron-st.c
> index f693f8720541..de450495e1ab 100644
> --- a/drivers/mtd/spi-nor/micron-st.c
> +++ b/drivers/mtd/spi-nor/micron-st.c
> @@ -309,7 +309,7 @@ static int micron_st_nor_set_4byte_addr_mode(struct spi_nor *nor, bool enable)
>  }
>  
>  /**
> - * spi_nor_read_fsr() - Read the Flag Status Register.
> + * micron_st_nor_read_fsr() - Read the Flag Status Register.
>   * @nor:	pointer to 'struct spi_nor'
>   * @fsr:	pointer to a DMA-able buffer where the value of the
>   *              Flag Status Register will be written. Should be at least 2
> @@ -317,7 +317,7 @@ static int micron_st_nor_set_4byte_addr_mode(struct spi_nor *nor, bool enable)
>   *
>   * Return: 0 on success, -errno otherwise.
>   */
> -static int spi_nor_read_fsr(struct spi_nor *nor, u8 *fsr)
> +static int micron_st_nor_read_fsr(struct spi_nor *nor, u8 *fsr)
>  {
>  	int ret;
>  
> @@ -353,10 +353,10 @@ static int spi_nor_read_fsr(struct spi_nor *nor, u8 *fsr)
>  }
>  
>  /**
> - * spi_nor_clear_fsr() - Clear the Flag Status Register.
> + * micron_st_nor_clear_fsr() - Clear the Flag Status Register.
>   * @nor:	pointer to 'struct spi_nor'.
>   */
> -static void spi_nor_clear_fsr(struct spi_nor *nor)
> +static void micron_st_nor_clear_fsr(struct spi_nor *nor)
>  {
>  	int ret;
>  
> @@ -380,13 +380,13 @@ static void spi_nor_clear_fsr(struct spi_nor *nor)
>  }
>  
>  /**
> - * spi_nor_fsr_ready() - Query the Flag Status Register to see if the flash is
> - * ready for new commands.
> + * micron_st_nor_fsr_ready() - Query the Flag Status Register to see if the
> + * flash is ready for new commands.

This is misleading. This function doesn't only query the FSR, but the SR 
as well. I think this should be renamed to micron_st_nor_ready(), and 
documentation updated to reflect that it checks for SR, and then FSR as 
well if the flag is specified.

>   * @nor:	pointer to 'struct spi_nor'.
>   *
>   * Return: 1 if ready, 0 if not ready, -errno on errors.
>   */
> -static int spi_nor_fsr_ready(struct spi_nor *nor)
> +static int micron_st_nor_fsr_ready(struct spi_nor *nor)
>  {
>  	int sr_ready, ret;

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 28/32] mtd: spi-nor: move all spansion specifics into spansion.c

[Pratyush Yadav]

On 21/02/22 01:08PM, Michael Walle wrote:
> The clear status register flags is only available on spansion flashes.
> Move all the functions around that into the spanion module.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>
> ---
>  drivers/mtd/spi-nor/core.c     | 49 ------------------------
>  drivers/mtd/spi-nor/spansion.c | 70 ++++++++++++++++++++++++++++++++++
>  include/linux/mtd/spi-nor.h    |  1 -
>  3 files changed, 70 insertions(+), 50 deletions(-)
> 
[...]
> diff --git a/drivers/mtd/spi-nor/spansion.c b/drivers/mtd/spi-nor/spansion.c
> index 1a0e7214d9e5..38eeb0913ab2 100644
> --- a/drivers/mtd/spi-nor/spansion.c
> +++ b/drivers/mtd/spi-nor/spansion.c
> @@ -8,6 +8,7 @@
>  
>  #include "core.h"
>  
> +#define SPINOR_OP_CLSR		0x30	/* Clear status register 1 */
>  #define SPINOR_OP_RD_ANY_REG			0x65	/* Read any register */
>  #define SPINOR_OP_WR_ANY_REG			0x71	/* Write any register */
>  #define SPINOR_REG_CYPRESS_CFR2V		0x00800003
> @@ -294,6 +295,72 @@ static const struct flash_info spansion_nor_parts[] = {
>  	},
>  };
>  
> +/**
> + * spi_nor_clear_sr() - Clear the Status Register.
> + * @nor:	pointer to 'struct spi_nor'.
> + */
> +static void spi_nor_clear_sr(struct spi_nor *nor)
> +{
> +	int ret;
> +
> +	if (nor->spimem) {
> +		struct spi_mem_op op =
> +			SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_CLSR, 0),
> +				   SPI_MEM_OP_NO_ADDR,
> +				   SPI_MEM_OP_NO_DUMMY,
> +				   SPI_MEM_OP_NO_DATA);
> +
> +		spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);
> +
> +		ret = spi_mem_exec_op(nor->spimem, &op);
> +	} else {
> +		ret = spi_nor_controller_ops_write_reg(nor, SPINOR_OP_CLSR,
> +						       NULL, 0);
> +	}
> +
> +	if (ret)
> +		dev_dbg(nor->dev, "error %d clearing SR\n", ret);
> +}
> +
> +/**
> + * spi_nor_sr_ready_and_clear() - Query the Status Register to see if the flash
> + * is ready for new commands and clear it.

Nitpick: "... and clear it if there are any errors."

Looks good otherwise.

Reviewed-by: Pratyush Yadav <p.yadav@ti.com>

> + * @nor:	pointer to 'struct spi_nor'.
> + *
> + * Return: 1 if ready, 0 if not ready, -errno on errors.
> + */
> +static int spi_nor_sr_ready_and_clear(struct spi_nor *nor)
> +{
> +	int ret;
> +
> +	ret = spi_nor_read_sr(nor, nor->bouncebuf);
> +	if (ret)
> +		return ret;
> +
> +	if (nor->bouncebuf[0] & (SR_E_ERR | SR_P_ERR)) {
> +		if (nor->bouncebuf[0] & SR_E_ERR)
> +			dev_err(nor->dev, "Erase Error occurred\n");
> +		else
> +			dev_err(nor->dev, "Programming Error occurred\n");
> +
> +		spi_nor_clear_sr(nor);
> +
> +		/*
> +		 * WEL bit remains set to one when an erase or page program
> +		 * error occurs. Issue a Write Disable command to protect
> +		 * against inadvertent writes that can possibly corrupt the
> +		 * contents of the memory.
> +		 */
> +		ret = spi_nor_write_disable(nor);
> +		if (ret)
> +			return ret;
> +
> +		return -EIO;
> +	}
> +
> +	return !(nor->bouncebuf[0] & SR_WIP);
> +}
> +
>  static void spansion_nor_late_init(struct spi_nor *nor)
>  {
>  	if (nor->params->size > SZ_16M) {
> @@ -302,6 +369,9 @@ static void spansion_nor_late_init(struct spi_nor *nor)
>  		nor->erase_opcode = SPINOR_OP_SE;
>  		nor->mtd.erasesize = nor->info->sector_size;
>  	}
> +
> +	if (nor->flags & SNOR_F_USE_CLSR)
> +		nor->params->ready = spi_nor_sr_ready_and_clear;
>  }
>  
>  static const struct spi_nor_fixups spansion_nor_fixups = {
> diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h
> index 4622251a79ff..5e25a7b75ae2 100644
> --- a/include/linux/mtd/spi-nor.h
> +++ b/include/linux/mtd/spi-nor.h
> @@ -90,7 +90,6 @@
>  
>  /* Used for Spansion flashes only. */
>  #define SPINOR_OP_BRWR		0x17	/* Bank register write */
> -#define SPINOR_OP_CLSR		0x30	/* Clear status register 1 */
>  
>  /* Used for Micron flashes only. */
>  #define SPINOR_OP_RD_EVCR      0x65    /* Read EVCR register */
> -- 
> 2.30.2
> 

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 31/32] mtd: spi-nor: slightly change code style in spi_nor_sr_ready()

[Pratyush Yadav]

On 21/02/22 01:08PM, Michael Walle wrote:
> Now that there is almost no special case code left in
> spi_nor_sr_ready(), the return check looks odd. Move the function call
> closer to the return code checking.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>

Reviewed-by: Pratyush Yadav <p.yadav@ti.com>

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.

Re: [PATCH v4 30/32] mtd: spi-nor: spansion: rename vendor specific functions and defines

[Pratyush Yadav]

On 21/02/22 01:08PM, Michael Walle wrote:
> Drop the generic spi_nor prefix for all the spansion functions.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>

Reviewed-by: Pratyush Yadav <p.yadav@ti.com>

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.