[PATCH V8 3/7] mtd: spi-nor: Add APIs to set/get nor->params

From: Amit Kumar Mahapatra
Date: Thu May 11 2023 - 03:32:31 EST

Supporting multi-cs in spi-nor would require the *params member of
struct spi_nor to be an array. To make the transition smoother introduced
spi_nor_get_params() & spi_nor_set_params() APIs to get & set nor->params,
added a new local variable (struct spi_nor_flash_parameter *params) to hold
the return value of the spi_nor_get_params() function call and replaced all
nor->params references with the "params".
While adding multi-cs support in further patches the *params member of the
spi_nor structure would be converted to arrays & the "idx" parameter of
the APIs would be used as array index i.e., nor->params[idx].

Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra@xxxxxxx>
---
drivers/mtd/spi-nor/atmel.c | 17 ++--
drivers/mtd/spi-nor/core.c | 137 ++++++++++++++++++++-----------
drivers/mtd/spi-nor/debugfs.c | 4 +-
drivers/mtd/spi-nor/gigadevice.c | 4 +-
drivers/mtd/spi-nor/issi.c | 11 ++-
drivers/mtd/spi-nor/macronix.c | 10 ++-
drivers/mtd/spi-nor/micron-st.c | 30 ++++---
drivers/mtd/spi-nor/otp.c | 29 +++++--
drivers/mtd/spi-nor/sfdp.c | 33 ++++----
drivers/mtd/spi-nor/spansion.c | 80 +++++++++++-------
drivers/mtd/spi-nor/sst.c | 7 +-
drivers/mtd/spi-nor/swp.c | 22 +++--
drivers/mtd/spi-nor/winbond.c | 2 +-
drivers/mtd/spi-nor/xilinx.c | 18 ++--
include/linux/mtd/spi-nor.h | 10 +++
15 files changed, 271 insertions(+), 143 deletions(-)

diff --git a/drivers/mtd/spi-nor/atmel.c b/drivers/mtd/spi-nor/atmel.c
index 656dd80a0be7..57ca9f5ee205 100644
--- a/drivers/mtd/spi-nor/atmel.c
+++ b/drivers/mtd/spi-nor/atmel.c
@@ -23,10 +23,11 @@ static int at25fs_nor_lock(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)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
int ret;

/* We only support unlocking the whole flash array */
- if (ofs || len != nor->params->size)
+ if (ofs || len != params->size)
return -EINVAL;

/* Write 0x00 to the status register to disable write protection */
@@ -50,7 +51,9 @@ static const struct spi_nor_locking_ops at25fs_nor_locking_ops = {

static void at25fs_nor_late_init(struct spi_nor *nor)
{
- nor->params->locking_ops = &at25fs_nor_locking_ops;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
+ params->locking_ops = &at25fs_nor_locking_ops;
}

static const struct spi_nor_fixups at25fs_nor_fixups = {
@@ -69,11 +72,12 @@ static const struct spi_nor_fixups at25fs_nor_fixups = {
static int atmel_nor_set_global_protection(struct spi_nor *nor, loff_t ofs,
uint64_t len, bool is_protect)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
int ret;
u8 sr;

/* We only support locking the whole flash array */
- if (ofs || len != nor->params->size)
+ if (ofs || len != params->size)
return -EINVAL;

ret = spi_nor_read_sr(nor, nor->bouncebuf);
@@ -131,9 +135,10 @@ static int atmel_nor_global_unprotect(struct spi_nor *nor, loff_t ofs,
static int atmel_nor_is_global_protected(struct spi_nor *nor, loff_t ofs,
uint64_t len)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
int ret;

- if (ofs >= nor->params->size || (ofs + len) > nor->params->size)
+ if (ofs >= params->size || (ofs + len) > params->size)
return -EINVAL;

ret = spi_nor_read_sr(nor, nor->bouncebuf);
@@ -151,7 +156,9 @@ static const struct spi_nor_locking_ops atmel_nor_global_protection_ops = {

static void atmel_nor_global_protection_late_init(struct spi_nor *nor)
{
- nor->params->locking_ops = &atmel_nor_global_protection_ops;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
+ params->locking_ops = &atmel_nor_global_protection_ops;
}

static const struct spi_nor_fixups atmel_nor_global_protection_fixups = {
diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index 0bb0ad14a2fc..c5d752a65575 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -448,14 +448,15 @@ int spi_nor_read_id(struct spi_nor *nor, u8 naddr, u8 ndummy, u8 *id,
*/
int spi_nor_read_sr(struct spi_nor *nor, u8 *sr)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
int ret;

if (nor->spimem) {
struct spi_mem_op op = SPI_NOR_RDSR_OP(sr);

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;
+ op.addr.nbytes = params->rdsr_addr_nbytes;
+ op.dummy.nbytes = params->rdsr_dummy;
/*
* We don't want to read only one byte in DTR mode. So,
* read 2 and then discard the second byte.
@@ -688,14 +689,15 @@ static void spi_nor_unlock_rdst(struct spi_nor *nor)
static int spi_nor_ready(struct spi_nor *nor)
{
int ret;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);

ret = spi_nor_lock_rdst(nor);
if (ret)
return 0;

/* Flashes might override the standard routine. */
- if (nor->params->ready)
- ret = nor->params->ready(nor);
+ if (params->ready)
+ ret = params->ready(nor);
else
ret = spi_nor_sr_ready(nor);

@@ -861,6 +863,7 @@ static int spi_nor_write_sr1_and_check(struct spi_nor *nor, u8 sr1)
*/
static int spi_nor_write_16bit_sr_and_check(struct spi_nor *nor, u8 sr1)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
int ret;
u8 *sr_cr = nor->bouncebuf;
u8 cr_written;
@@ -870,7 +873,7 @@ static int spi_nor_write_16bit_sr_and_check(struct spi_nor *nor, u8 sr1)
ret = spi_nor_read_cr(nor, &sr_cr[1]);
if (ret)
return ret;
- } else if (nor->params->quad_enable) {
+ } else if (params->quad_enable) {
/*
* If the Status Register 2 Read command (35h) is not
* supported, we should at least be sure we don't
@@ -878,7 +881,7 @@ static int spi_nor_write_16bit_sr_and_check(struct spi_nor *nor, u8 sr1)
*
* We can safely assume that when the Quad Enable method is
* set, the value of the QE bit is one, as a consequence of the
- * nor->params->quad_enable() call.
+ * params->quad_enable() call.
*
* We can safely assume that the Quad Enable bit is present in
* the Status Register 2 at BIT(1). According to the JESD216
@@ -1149,17 +1152,21 @@ static u8 spi_nor_convert_3to4_erase(u8 opcode)

static bool spi_nor_has_uniform_erase(const struct spi_nor *nor)
{
- return !!nor->params->erase_map.uniform_erase_type;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
+ return !!params->erase_map.uniform_erase_type;
}

static void spi_nor_set_4byte_opcodes(struct spi_nor *nor)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
nor->read_opcode = spi_nor_convert_3to4_read(nor->read_opcode);
nor->program_opcode = spi_nor_convert_3to4_program(nor->program_opcode);
nor->erase_opcode = spi_nor_convert_3to4_erase(nor->erase_opcode);

if (!spi_nor_has_uniform_erase(nor)) {
- struct spi_nor_erase_map *map = &nor->params->erase_map;
+ struct spi_nor_erase_map *map = &params->erase_map;
struct spi_nor_erase_type *erase;
int i;

@@ -1301,6 +1308,7 @@ void spi_nor_unlock_and_unprep(struct spi_nor *nor)
/* Internal locking helpers for program and erase operations */
static bool spi_nor_rww_start_pe(struct spi_nor *nor, loff_t start, size_t len)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_nor_rww *rww = &nor->rww;
unsigned int used_banks = 0;
bool started = false;
@@ -1312,7 +1320,7 @@ static bool spi_nor_rww_start_pe(struct spi_nor *nor, loff_t start, size_t len)
if (rww->ongoing_io || rww->ongoing_rd || rww->ongoing_pe)
goto busy;

- spi_nor_offset_to_banks(nor->params->bank_size, start, len, &first, &last);
+ spi_nor_offset_to_banks(params->bank_size, start, len, &first, &last);
for (bank = first; bank <= last; bank++) {
if (rww->used_banks & BIT(bank))
goto busy;
@@ -1331,13 +1339,14 @@ static bool spi_nor_rww_start_pe(struct spi_nor *nor, loff_t start, size_t len)

static void spi_nor_rww_end_pe(struct spi_nor *nor, loff_t start, size_t len)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_nor_rww *rww = &nor->rww;
u8 first, last;
int bank;

mutex_lock(&nor->lock);

- spi_nor_offset_to_banks(nor->params->bank_size, start, len, &first, &last);
+ spi_nor_offset_to_banks(params->bank_size, start, len, &first, &last);
for (bank = first; bank <= last; bank++)
rww->used_banks &= ~BIT(bank);

@@ -1378,6 +1387,7 @@ static void spi_nor_unlock_and_unprep_pe(struct spi_nor *nor, loff_t start, size
/* Internal locking helpers for read operations */
static bool spi_nor_rww_start_rd(struct spi_nor *nor, loff_t start, size_t len)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_nor_rww *rww = &nor->rww;
unsigned int used_banks = 0;
bool started = false;
@@ -1389,7 +1399,7 @@ static bool spi_nor_rww_start_rd(struct spi_nor *nor, loff_t start, size_t len)
if (rww->ongoing_io || rww->ongoing_rd)
goto busy;

- spi_nor_offset_to_banks(nor->params->bank_size, start, len, &first, &last);
+ spi_nor_offset_to_banks(params->bank_size, start, len, &first, &last);
for (bank = first; bank <= last; bank++) {
if (rww->used_banks & BIT(bank))
goto busy;
@@ -1409,13 +1419,14 @@ static bool spi_nor_rww_start_rd(struct spi_nor *nor, loff_t start, size_t len)

static void spi_nor_rww_end_rd(struct spi_nor *nor, loff_t start, size_t len)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_nor_rww *rww = &nor->rww;
u8 first, last;
int bank;

mutex_lock(&nor->lock);

- spi_nor_offset_to_banks(nor->params->bank_size, start, len, &first, &last);
+ spi_nor_offset_to_banks(params->bank_size, start, len, &first, &last);
for (bank = first; bank <= last; bank++)
nor->rww.used_banks &= ~BIT(bank);

@@ -1456,10 +1467,12 @@ static void spi_nor_unlock_and_unprep_rd(struct spi_nor *nor, loff_t start, size

static u32 spi_nor_convert_addr(struct spi_nor *nor, loff_t addr)
{
- if (!nor->params->convert_addr)
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
+ if (!params->convert_addr)
return addr;

- return nor->params->convert_addr(nor, addr);
+ return params->convert_addr(nor, addr);
}

/*
@@ -1679,7 +1692,8 @@ static int spi_nor_init_erase_cmd_list(struct spi_nor *nor,
struct list_head *erase_list,
u64 addr, u32 len)
{
- const struct spi_nor_erase_map *map = &nor->params->erase_map;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+ const struct spi_nor_erase_map *map = &params->erase_map;
const struct spi_nor_erase_type *erase, *prev_erase = NULL;
struct spi_nor_erase_region *region;
struct spi_nor_erase_command *cmd = NULL;
@@ -2131,9 +2145,10 @@ static int spi_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);
+ struct spi_nor_flash_parameter *params;
size_t page_offset, page_remain, i;
ssize_t ret;
- u32 page_size = nor->params->page_size;
+ u32 page_size;

dev_dbg(nor->dev, "to 0x%08x, len %zd\n", (u32)to, len);

@@ -2141,6 +2156,9 @@ static int spi_nor_write(struct mtd_info *mtd, loff_t to, size_t len,
if (ret)
return ret;

+ params = spi_nor_get_params(nor, 0);
+ page_size = params->page_size;
+
for (i = 0; i < len; ) {
ssize_t written;
loff_t addr = to + i;
@@ -2296,6 +2314,8 @@ int spi_nor_hwcaps_pp2cmd(u32 hwcaps)
static int spi_nor_spimem_check_op(struct spi_nor *nor,
struct spi_mem_op *op)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
/*
* First test with 4 address bytes. The opcode itself might
* be a 3B addressing opcode but we don't care, because
@@ -2304,7 +2324,7 @@ static int spi_nor_spimem_check_op(struct spi_nor *nor,
*/
op->addr.nbytes = 4;
if (!spi_mem_supports_op(nor->spimem, op)) {
- if (nor->params->size > SZ_16M)
+ if (params->size > SZ_16M)
return -EOPNOTSUPP;

/* If flash size <= 16MB, 3 address bytes are sufficient */
@@ -2368,7 +2388,7 @@ static int spi_nor_spimem_check_pp(struct spi_nor *nor,
static void
spi_nor_spimem_adjust_hwcaps(struct spi_nor *nor, u32 *hwcaps)
{
- struct spi_nor_flash_parameter *params = nor->params;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
unsigned int cap;

/* X-X-X modes are not supported yet, mask them all. */
@@ -2469,6 +2489,7 @@ static int spi_nor_select_read(struct spi_nor *nor,
u32 shared_hwcaps)
{
int cmd, best_match = fls(shared_hwcaps & SNOR_HWCAPS_READ_MASK) - 1;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
const struct spi_nor_read_command *read;

if (best_match < 0)
@@ -2478,7 +2499,7 @@ static int spi_nor_select_read(struct spi_nor *nor,
if (cmd < 0)
return -EINVAL;

- read = &nor->params->reads[cmd];
+ read = &params->reads[cmd];
nor->read_opcode = read->opcode;
nor->read_proto = read->proto;

@@ -2499,6 +2520,7 @@ static int spi_nor_select_read(struct spi_nor *nor,
static int spi_nor_select_pp(struct spi_nor *nor,
u32 shared_hwcaps)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
int cmd, best_match = fls(shared_hwcaps & SNOR_HWCAPS_PP_MASK) - 1;
const struct spi_nor_pp_command *pp;

@@ -2509,7 +2531,7 @@ static int spi_nor_select_pp(struct spi_nor *nor,
if (cmd < 0)
return -EINVAL;

- pp = &nor->params->page_programs[cmd];
+ pp = &params->page_programs[cmd];
nor->program_opcode = pp->opcode;
nor->write_proto = pp->proto;
return 0;
@@ -2578,7 +2600,8 @@ spi_nor_select_uniform_erase(struct spi_nor_erase_map *map,

static int spi_nor_select_erase(struct spi_nor *nor)
{
- struct spi_nor_erase_map *map = &nor->params->erase_map;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+ struct spi_nor_erase_map *map = &params->erase_map;
const struct spi_nor_erase_type *erase = NULL;
struct mtd_info *mtd = &nor->mtd;
u32 wanted_size = nor->info->sector_size;
@@ -2627,7 +2650,7 @@ static int spi_nor_select_erase(struct spi_nor *nor)
static int spi_nor_default_setup(struct spi_nor *nor,
const struct spi_nor_hwcaps *hwcaps)
{
- struct spi_nor_flash_parameter *params = nor->params;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
u32 ignored_mask, shared_mask;
int err;

@@ -2687,8 +2710,10 @@ static int spi_nor_default_setup(struct spi_nor *nor,

static int spi_nor_set_addr_nbytes(struct spi_nor *nor)
{
- if (nor->params->addr_nbytes) {
- nor->addr_nbytes = nor->params->addr_nbytes;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
+ if (params->addr_nbytes) {
+ nor->addr_nbytes = params->addr_nbytes;
} else if (nor->read_proto == SNOR_PROTO_8_8_8_DTR) {
/*
* In 8D-8D-8D mode, one byte takes half a cycle to transfer. So
@@ -2709,7 +2734,7 @@ static int spi_nor_set_addr_nbytes(struct spi_nor *nor)
nor->addr_nbytes = 3;
}

- if (nor->addr_nbytes == 3 && nor->params->size > 0x1000000) {
+ if (nor->addr_nbytes == 3 && params->size > 0x1000000) {
/* enable 4-byte addressing if the device exceeds 16MiB */
nor->addr_nbytes = 4;
}
@@ -2731,10 +2756,11 @@ static int spi_nor_set_addr_nbytes(struct spi_nor *nor)
static int spi_nor_setup(struct spi_nor *nor,
const struct spi_nor_hwcaps *hwcaps)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
int ret;

- if (nor->params->setup)
- ret = nor->params->setup(nor, hwcaps);
+ if (params->setup)
+ ret = params->setup(nor, hwcaps);
else
ret = spi_nor_default_setup(nor, hwcaps);
if (ret)
@@ -2769,7 +2795,7 @@ static void spi_nor_manufacturer_init_params(struct spi_nor *nor)
*/
static void spi_nor_no_sfdp_init_params(struct spi_nor *nor)
{
- struct spi_nor_flash_parameter *params = nor->params;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_nor_erase_map *map = &params->erase_map;
const u8 no_sfdp_flags = nor->info->no_sfdp_flags;
u8 i, erase_mask;
@@ -2898,7 +2924,7 @@ static void spi_nor_init_fixup_flags(struct spi_nor *nor)
*/
static void spi_nor_late_init_params(struct spi_nor *nor)
{
- struct spi_nor_flash_parameter *params = nor->params;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);

if (nor->manufacturer && nor->manufacturer->fixups &&
nor->manufacturer->fixups->late_init)
@@ -2918,10 +2944,10 @@ static void spi_nor_late_init_params(struct spi_nor *nor)
* NOR protection support. When locking_ops are not provided, we pick
* the default ones.
*/
- if (nor->flags & SNOR_F_HAS_LOCK && !nor->params->locking_ops)
+ if (nor->flags & SNOR_F_HAS_LOCK && !params->locking_ops)
spi_nor_init_default_locking_ops(nor);

- nor->params->bank_size = div64_u64(nor->params->size, nor->info->n_banks);
+ params->bank_size = div64_u64(params->size, nor->info->n_banks);
}

/**
@@ -2934,12 +2960,13 @@ static void spi_nor_late_init_params(struct spi_nor *nor)
*/
static void spi_nor_sfdp_init_params_deprecated(struct spi_nor *nor)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_nor_flash_parameter sfdp_params;

- memcpy(&sfdp_params, nor->params, sizeof(sfdp_params));
+ memcpy(&sfdp_params, params, sizeof(sfdp_params));

if (spi_nor_parse_sfdp(nor)) {
- memcpy(nor->params, &sfdp_params, sizeof(*nor->params));
+ memcpy(params, &sfdp_params, sizeof(*params));
nor->flags &= ~SNOR_F_4B_OPCODES;
}
}
@@ -2974,7 +3001,7 @@ static void spi_nor_init_params_deprecated(struct spi_nor *nor)
*/
static void spi_nor_init_default_params(struct spi_nor *nor)
{
- struct spi_nor_flash_parameter *params = nor->params;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
const struct flash_info *info = nor->info;
struct device_node *np = spi_nor_get_flash_node(nor);

@@ -3059,12 +3086,15 @@ static void spi_nor_init_default_params(struct spi_nor *nor)
*/
static int spi_nor_init_params(struct spi_nor *nor)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
int ret;

- nor->params = devm_kzalloc(nor->dev, sizeof(*nor->params), GFP_KERNEL);
- if (!nor->params)
+ params = devm_kzalloc(nor->dev, sizeof(*params), GFP_KERNEL);
+ if (!params)
return -ENOMEM;

+ spi_nor_set_params(nor, 0, params);
+
spi_nor_init_default_params(nor);

if (nor->info->parse_sfdp) {
@@ -3092,9 +3122,10 @@ static int spi_nor_init_params(struct spi_nor *nor)
*/
static int spi_nor_octal_dtr_enable(struct spi_nor *nor, bool enable)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
int ret;

- if (!nor->params->octal_dtr_enable)
+ if (!params->octal_dtr_enable)
return 0;

if (!(nor->read_proto == SNOR_PROTO_8_8_8_DTR &&
@@ -3104,7 +3135,7 @@ static int spi_nor_octal_dtr_enable(struct spi_nor *nor, bool enable)
if (!(nor->flags & SNOR_F_IO_MODE_EN_VOLATILE))
return 0;

- ret = nor->params->octal_dtr_enable(nor, enable);
+ ret = params->octal_dtr_enable(nor, enable);
if (ret)
return ret;

@@ -3124,14 +3155,16 @@ static int spi_nor_octal_dtr_enable(struct spi_nor *nor, bool enable)
*/
static int spi_nor_quad_enable(struct spi_nor *nor)
{
- if (!nor->params->quad_enable)
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
+ if (!params->quad_enable)
return 0;

if (!(spi_nor_get_protocol_width(nor->read_proto) == 4 ||
spi_nor_get_protocol_width(nor->write_proto) == 4))
return 0;

- return nor->params->quad_enable(nor);
+ return params->quad_enable(nor);
}

/**
@@ -3143,7 +3176,7 @@ static int spi_nor_quad_enable(struct spi_nor *nor)
*/
int spi_nor_set_4byte_addr_mode(struct spi_nor *nor, bool enable)
{
- struct spi_nor_flash_parameter *params = nor->params;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
int ret;

ret = params->set_4byte_addr_mode(nor, enable);
@@ -3396,6 +3429,7 @@ static const struct flash_info *spi_nor_get_flash_info(struct spi_nor *nor,

static void spi_nor_set_mtd_info(struct spi_nor *nor)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct mtd_info *mtd = &nor->mtd;
struct device *dev = nor->dev;

@@ -3414,9 +3448,9 @@ static void spi_nor_set_mtd_info(struct spi_nor *nor)
mtd->flags |= MTD_NO_ERASE;
else
mtd->_erase = spi_nor_erase;
- mtd->writesize = nor->params->writesize;
- mtd->writebufsize = nor->params->page_size;
- mtd->size = nor->params->size;
+ mtd->writesize = params->writesize;
+ mtd->writebufsize = params->page_size;
+ mtd->size = params->size;
mtd->_read = spi_nor_read;
/* Might be already set by some SST flashes. */
if (!mtd->_write)
@@ -3470,7 +3504,7 @@ int spi_nor_scan(struct spi_nor *nor, const char *name,
* We need the bounce buffer early to read/write registers when going
* through the spi-mem layer (buffers have to be DMA-able).
* For spi-mem drivers, we'll reallocate a new buffer if
- * nor->params->page_size turns out to be greater than PAGE_SIZE (which
+ * params->page_size turns out to be greater than PAGE_SIZE (which
* shouldn't happen before long since NOR pages are usually less
* than 1KB) after spi_nor_scan() returns.
*/
@@ -3544,13 +3578,14 @@ EXPORT_SYMBOL_GPL(spi_nor_scan);

static int spi_nor_create_read_dirmap(struct spi_nor *nor)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_mem_dirmap_info info = {
.op_tmpl = SPI_MEM_OP(SPI_MEM_OP_CMD(nor->read_opcode, 0),
SPI_MEM_OP_ADDR(nor->addr_nbytes, 0, 0),
SPI_MEM_OP_DUMMY(nor->read_dummy, 0),
SPI_MEM_OP_DATA_IN(0, NULL, 0)),
.offset = 0,
- .length = nor->params->size,
+ .length = params->size,
};
struct spi_mem_op *op = &info.op_tmpl;

@@ -3575,13 +3610,14 @@ static int spi_nor_create_read_dirmap(struct spi_nor *nor)

static int spi_nor_create_write_dirmap(struct spi_nor *nor)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_mem_dirmap_info info = {
.op_tmpl = SPI_MEM_OP(SPI_MEM_OP_CMD(nor->program_opcode, 0),
SPI_MEM_OP_ADDR(nor->addr_nbytes, 0, 0),
SPI_MEM_OP_NO_DUMMY,
SPI_MEM_OP_DATA_OUT(0, NULL, 0)),
.offset = 0,
- .length = nor->params->size,
+ .length = params->size,
};
struct spi_mem_op *op = &info.op_tmpl;

@@ -3604,6 +3640,7 @@ static int spi_nor_create_write_dirmap(struct spi_nor *nor)

static int spi_nor_probe(struct spi_mem *spimem)
{
+ struct spi_nor_flash_parameter *params;
struct spi_device *spi = spimem->spi;
struct flash_platform_data *data = dev_get_platdata(&spi->dev);
struct spi_nor *nor;
@@ -3650,13 +3687,15 @@ static int spi_nor_probe(struct spi_mem *spimem)

spi_nor_debugfs_register(nor);

+ params = spi_nor_get_params(nor, 0);
+
/*
* None of the existing parts have > 512B pages, but let's play safe
* and add this logic so that if anyone ever adds support for such
* a NOR we don't end up with buffer overflows.
*/
- if (nor->params->page_size > PAGE_SIZE) {
- nor->bouncebuf_size = nor->params->page_size;
+ if (params->page_size > PAGE_SIZE) {
+ nor->bouncebuf_size = params->page_size;
devm_kfree(nor->dev, nor->bouncebuf);
nor->bouncebuf = devm_kmalloc(nor->dev,
nor->bouncebuf_size,
diff --git a/drivers/mtd/spi-nor/debugfs.c b/drivers/mtd/spi-nor/debugfs.c
index e11536fffe0f..304a24a69e01 100644
--- a/drivers/mtd/spi-nor/debugfs.c
+++ b/drivers/mtd/spi-nor/debugfs.c
@@ -75,7 +75,7 @@ static void spi_nor_print_flags(struct seq_file *s, unsigned long flags,
static int spi_nor_params_show(struct seq_file *s, void *data)
{
struct spi_nor *nor = s->private;
- struct spi_nor_flash_parameter *params = nor->params;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_nor_erase_map *erase_map = &params->erase_map;
struct spi_nor_erase_region *region;
const struct flash_info *info = nor->info;
@@ -183,7 +183,7 @@ static void spi_nor_print_pp_cmd(struct seq_file *s,
static int spi_nor_capabilities_show(struct seq_file *s, void *data)
{
struct spi_nor *nor = s->private;
- struct spi_nor_flash_parameter *params = nor->params;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
u32 hwcaps = params->hwcaps.mask;
int i, cmd;

diff --git a/drivers/mtd/spi-nor/gigadevice.c b/drivers/mtd/spi-nor/gigadevice.c
index d57ddaf1525b..643f131d3916 100644
--- a/drivers/mtd/spi-nor/gigadevice.c
+++ b/drivers/mtd/spi-nor/gigadevice.c
@@ -13,6 +13,8 @@ gd25q256_post_bfpt(struct spi_nor *nor,
const struct sfdp_parameter_header *bfpt_header,
const struct sfdp_bfpt *bfpt)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
/*
* GD25Q256C supports the first version of JESD216 which does not define
* the Quad Enable methods. Overwrite the default Quad Enable method.
@@ -24,7 +26,7 @@ gd25q256_post_bfpt(struct spi_nor *nor,
*/
if (bfpt_header->major == SFDP_JESD216_MAJOR &&
bfpt_header->minor == SFDP_JESD216_MINOR)
- nor->params->quad_enable = spi_nor_sr1_bit6_quad_enable;
+ params->quad_enable = spi_nor_sr1_bit6_quad_enable;

return 0;
}
diff --git a/drivers/mtd/spi-nor/issi.c b/drivers/mtd/spi-nor/issi.c
index 400e2b42f45a..7785ba347526 100644
--- a/drivers/mtd/spi-nor/issi.c
+++ b/drivers/mtd/spi-nor/issi.c
@@ -13,6 +13,8 @@ is25lp256_post_bfpt_fixups(struct spi_nor *nor,
const struct sfdp_parameter_header *bfpt_header,
const struct sfdp_bfpt *bfpt)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
/*
* IS25LP256 supports 4B opcodes, but the BFPT advertises
* BFPT_DWORD1_ADDRESS_BYTES_3_ONLY.
@@ -20,7 +22,7 @@ is25lp256_post_bfpt_fixups(struct spi_nor *nor,
*/
if ((bfpt->dwords[SFDP_DWORD(1)] & BFPT_DWORD1_ADDRESS_BYTES_MASK) ==
BFPT_DWORD1_ADDRESS_BYTES_3_ONLY)
- nor->params->addr_nbytes = 4;
+ params->addr_nbytes = 4;

return 0;
}
@@ -31,7 +33,8 @@ static const struct spi_nor_fixups is25lp256_fixups = {

static void pm25lv_nor_late_init(struct spi_nor *nor)
{
- struct spi_nor_erase_map *map = &nor->params->erase_map;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+ struct spi_nor_erase_map *map = &params->erase_map;
int i;

/* The PM25LV series has a different 4k sector erase opcode */
@@ -91,7 +94,9 @@ static const struct flash_info issi_nor_parts[] = {

static void issi_nor_default_init(struct spi_nor *nor)
{
- nor->params->quad_enable = spi_nor_sr1_bit6_quad_enable;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
+ params->quad_enable = spi_nor_sr1_bit6_quad_enable;
}

static const struct spi_nor_fixups issi_fixups = {
diff --git a/drivers/mtd/spi-nor/macronix.c b/drivers/mtd/spi-nor/macronix.c
index 04888258e891..88ddfc6ea77f 100644
--- a/drivers/mtd/spi-nor/macronix.c
+++ b/drivers/mtd/spi-nor/macronix.c
@@ -107,13 +107,17 @@ static const struct flash_info macronix_nor_parts[] = {

static void macronix_nor_default_init(struct spi_nor *nor)
{
- nor->params->quad_enable = spi_nor_sr1_bit6_quad_enable;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
+ params->quad_enable = spi_nor_sr1_bit6_quad_enable;
}

static void macronix_nor_late_init(struct spi_nor *nor)
{
- if (!nor->params->set_4byte_addr_mode)
- nor->params->set_4byte_addr_mode = spi_nor_set_4byte_addr_mode_en4b_ex4b;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
+ if (!params->set_4byte_addr_mode)
+ params->set_4byte_addr_mode = spi_nor_set_4byte_addr_mode_en4b_ex4b;
}

static const struct spi_nor_fixups macronix_nor_fixups = {
diff --git a/drivers/mtd/spi-nor/micron-st.c b/drivers/mtd/spi-nor/micron-st.c
index 4b919756a205..92d6b0e7512c 100644
--- a/drivers/mtd/spi-nor/micron-st.c
+++ b/drivers/mtd/spi-nor/micron-st.c
@@ -49,10 +49,11 @@

static int micron_st_nor_octal_dtr_en(struct spi_nor *nor)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_mem_op op;
u8 *buf = nor->bouncebuf;
int ret;
- u8 addr_mode_nbytes = nor->params->addr_mode_nbytes;
+ u8 addr_mode_nbytes = params->addr_mode_nbytes;

/* Use 20 dummy cycles for memory array reads. */
*buf = 20;
@@ -128,27 +129,31 @@ static int micron_st_nor_octal_dtr_enable(struct spi_nor *nor, bool enable)

static void mt35xu512aba_default_init(struct spi_nor *nor)
{
- nor->params->octal_dtr_enable = micron_st_nor_octal_dtr_enable;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
+ params->octal_dtr_enable = micron_st_nor_octal_dtr_enable;
}

static int mt35xu512aba_post_sfdp_fixup(struct spi_nor *nor)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
/* Set the Fast Read settings. */
- nor->params->hwcaps.mask |= SNOR_HWCAPS_READ_8_8_8_DTR;
- spi_nor_set_read_settings(&nor->params->reads[SNOR_CMD_READ_8_8_8_DTR],
+ params->hwcaps.mask |= SNOR_HWCAPS_READ_8_8_8_DTR;
+ spi_nor_set_read_settings(&params->reads[SNOR_CMD_READ_8_8_8_DTR],
0, 20, SPINOR_OP_MT_DTR_RD,
SNOR_PROTO_8_8_8_DTR);

nor->cmd_ext_type = SPI_NOR_EXT_REPEAT;
- nor->params->rdsr_dummy = 8;
- nor->params->rdsr_addr_nbytes = 0;
+ params->rdsr_dummy = 8;
+ params->rdsr_addr_nbytes = 0;

/*
* The BFPT quad enable field is set to a reserved value so the quad
* enable function is ignored by spi_nor_parse_bfpt(). Make sure we
* disable it.
*/
- nor->params->quad_enable = NULL;
+ params->quad_enable = NULL;

return 0;
}
@@ -314,14 +319,15 @@ static const struct flash_info st_nor_parts[] = {
*/
static int micron_st_nor_read_fsr(struct spi_nor *nor, u8 *fsr)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
int ret;

if (nor->spimem) {
struct spi_mem_op op = MICRON_ST_RDFSR_OP(fsr);

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;
+ op.addr.nbytes = params->rdsr_addr_nbytes;
+ op.dummy.nbytes = params->rdsr_dummy;
/*
* We don't want to read only one byte in DTR mode. So,
* read 2 and then discard the second byte.
@@ -424,14 +430,16 @@ static int micron_st_nor_ready(struct spi_nor *nor)

static void micron_st_nor_default_init(struct spi_nor *nor)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
nor->flags |= SNOR_F_HAS_LOCK;
nor->flags &= ~SNOR_F_HAS_16BIT_SR;
- nor->params->quad_enable = NULL;
+ params->quad_enable = NULL;
}

static void micron_st_nor_late_init(struct spi_nor *nor)
{
- struct spi_nor_flash_parameter *params = nor->params;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);

if (nor->info->mfr_flags & USE_FSR)
params->ready = micron_st_nor_ready;
diff --git a/drivers/mtd/spi-nor/otp.c b/drivers/mtd/spi-nor/otp.c
index 23fe75ddc9cf..16a9a0375aeb 100644
--- a/drivers/mtd/spi-nor/otp.c
+++ b/drivers/mtd/spi-nor/otp.c
@@ -19,7 +19,9 @@
*/
static inline unsigned int spi_nor_otp_region_len(struct spi_nor *nor)
{
- return nor->params->otp.org->len;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
+ return params->otp.org->len;
}

/**
@@ -30,7 +32,9 @@ static inline unsigned int spi_nor_otp_region_len(struct spi_nor *nor)
*/
static inline unsigned int spi_nor_otp_n_regions(struct spi_nor *nor)
{
- return nor->params->otp.org->n_regions;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
+ return params->otp.org->n_regions;
}

/**
@@ -241,7 +245,8 @@ int spi_nor_otp_is_locked_sr2(struct spi_nor *nor, unsigned int region)

static loff_t spi_nor_otp_region_start(const struct spi_nor *nor, unsigned int region)
{
- const struct spi_nor_otp_organization *org = nor->params->otp.org;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+ const struct spi_nor_otp_organization *org = params->otp.org;

return org->base + region * org->offset;
}
@@ -266,7 +271,8 @@ static int spi_nor_mtd_otp_info(struct mtd_info *mtd, size_t len,
size_t *retlen, struct otp_info *buf)
{
struct spi_nor *nor = mtd_to_spi_nor(mtd);
- const struct spi_nor_otp_ops *ops = nor->params->otp.ops;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+ const struct spi_nor_otp_ops *ops = params->otp.ops;
unsigned int n_regions = spi_nor_otp_n_regions(nor);
unsigned int i;
int ret, locked;
@@ -303,7 +309,8 @@ static int spi_nor_mtd_otp_info(struct mtd_info *mtd, size_t len,
static int spi_nor_mtd_otp_range_is_locked(struct spi_nor *nor, loff_t ofs,
size_t len)
{
- const struct spi_nor_otp_ops *ops = nor->params->otp.ops;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+ const struct spi_nor_otp_ops *ops = params->otp.ops;
unsigned int region;
int locked;

@@ -328,7 +335,8 @@ static int spi_nor_mtd_otp_read_write(struct mtd_info *mtd, loff_t ofs,
const u8 *buf, bool is_write)
{
struct spi_nor *nor = mtd_to_spi_nor(mtd);
- const struct spi_nor_otp_ops *ops = nor->params->otp.ops;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+ const struct spi_nor_otp_ops *ops = params->otp.ops;
const size_t rlen = spi_nor_otp_region_len(nor);
loff_t rstart, rofs;
unsigned int region;
@@ -414,7 +422,8 @@ static int spi_nor_mtd_otp_write(struct mtd_info *mtd, loff_t to, size_t len,
static int spi_nor_mtd_otp_erase(struct mtd_info *mtd, loff_t from, size_t len)
{
struct spi_nor *nor = mtd_to_spi_nor(mtd);
- const struct spi_nor_otp_ops *ops = nor->params->otp.ops;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+ const struct spi_nor_otp_ops *ops = params->otp.ops;
const size_t rlen = spi_nor_otp_region_len(nor);
unsigned int region;
loff_t rstart;
@@ -467,7 +476,8 @@ static int spi_nor_mtd_otp_erase(struct mtd_info *mtd, loff_t from, size_t len)
static int spi_nor_mtd_otp_lock(struct mtd_info *mtd, loff_t from, size_t len)
{
struct spi_nor *nor = mtd_to_spi_nor(mtd);
- const struct spi_nor_otp_ops *ops = nor->params->otp.ops;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+ const struct spi_nor_otp_ops *ops = params->otp.ops;
const size_t rlen = spi_nor_otp_region_len(nor);
unsigned int region;
int ret;
@@ -501,9 +511,10 @@ static int spi_nor_mtd_otp_lock(struct mtd_info *mtd, loff_t from, size_t len)

void spi_nor_set_mtd_otp_ops(struct spi_nor *nor)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct mtd_info *mtd = &nor->mtd;

- if (!nor->params->otp.ops)
+ if (!params->otp.ops)
return;

if (WARN_ON(!is_power_of_2(spi_nor_otp_region_len(nor))))
diff --git a/drivers/mtd/spi-nor/sfdp.c b/drivers/mtd/spi-nor/sfdp.c
index b3b11dfed789..f7137c100569 100644
--- a/drivers/mtd/spi-nor/sfdp.c
+++ b/drivers/mtd/spi-nor/sfdp.c
@@ -436,7 +436,7 @@ static void spi_nor_regions_sort_erase_types(struct spi_nor_erase_map *map)
static int spi_nor_parse_bfpt(struct spi_nor *nor,
const struct sfdp_parameter_header *bfpt_header)
{
- struct spi_nor_flash_parameter *params = nor->params;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_nor_erase_map *map = &params->erase_map;
struct spi_nor_erase_type *erase_type = map->erase_type;
struct sfdp_bfpt bfpt;
@@ -661,6 +661,8 @@ static int spi_nor_parse_bfpt(struct spi_nor *nor,
*/
static u8 spi_nor_smpt_addr_nbytes(const struct spi_nor *nor, const u32 settings)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
switch (settings & SMPT_CMD_ADDRESS_LEN_MASK) {
case SMPT_CMD_ADDRESS_LEN_0:
return 0;
@@ -670,7 +672,7 @@ static u8 spi_nor_smpt_addr_nbytes(const struct spi_nor *nor, const u32 settings
return 4;
case SMPT_CMD_ADDRESS_LEN_USE_CURRENT:
default:
- return nor->params->addr_mode_nbytes;
+ return params->addr_mode_nbytes;
}
}

@@ -822,7 +824,8 @@ spi_nor_region_check_overlay(struct spi_nor_erase_region *region,
static int spi_nor_init_non_uniform_erase_map(struct spi_nor *nor,
const u32 *smpt)
{
- struct spi_nor_erase_map *map = &nor->params->erase_map;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+ struct spi_nor_erase_map *map = &params->erase_map;
struct spi_nor_erase_type *erase = map->erase_type;
struct spi_nor_erase_region *region;
u64 offset;
@@ -910,6 +913,7 @@ static int spi_nor_init_non_uniform_erase_map(struct spi_nor *nor,
static int spi_nor_parse_smpt(struct spi_nor *nor,
const struct sfdp_parameter_header *smpt_header)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
const u32 *sector_map;
u32 *smpt;
size_t len;
@@ -940,7 +944,7 @@ static int spi_nor_parse_smpt(struct spi_nor *nor,
if (ret)
goto out;

- spi_nor_regions_sort_erase_types(&nor->params->erase_map);
+ spi_nor_regions_sort_erase_types(&params->erase_map);
/* fall through */
out:
kfree(smpt);
@@ -980,7 +984,7 @@ static int spi_nor_parse_4bait(struct spi_nor *nor,
{ 0u /* not used */, BIT(11) },
{ 0u /* not used */, BIT(12) },
};
- struct spi_nor_flash_parameter *params = nor->params;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_nor_pp_command *params_pp = params->page_programs;
struct spi_nor_erase_map *map = &params->erase_map;
struct spi_nor_erase_type *erase_type = map->erase_type;
@@ -1143,6 +1147,7 @@ static int spi_nor_parse_4bait(struct spi_nor *nor,
static int spi_nor_parse_profile1(struct spi_nor *nor,
const struct sfdp_parameter_header *profile1_header)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
u32 *dwords, addr;
size_t len;
int ret;
@@ -1165,14 +1170,14 @@ static int spi_nor_parse_profile1(struct spi_nor *nor,

/* Set the Read Status Register dummy cycles and dummy address bytes. */
if (dwords[SFDP_DWORD(1)] & PROFILE1_DWORD1_RDSR_DUMMY)
- nor->params->rdsr_dummy = 8;
+ params->rdsr_dummy = 8;
else
- nor->params->rdsr_dummy = 4;
+ params->rdsr_dummy = 4;

if (dwords[SFDP_DWORD(1)] & PROFILE1_DWORD1_RDSR_ADDR_BYTES)
- nor->params->rdsr_addr_nbytes = 4;
+ params->rdsr_addr_nbytes = 4;
else
- nor->params->rdsr_addr_nbytes = 0;
+ params->rdsr_addr_nbytes = 0;

/*
* We don't know what speed the controller is running at. Find the
@@ -1201,8 +1206,8 @@ static int spi_nor_parse_profile1(struct spi_nor *nor,
dummy = round_up(dummy, 2);

/* Update the fast read settings. */
- nor->params->hwcaps.mask |= SNOR_HWCAPS_READ_8_8_8_DTR;
- spi_nor_set_read_settings(&nor->params->reads[SNOR_CMD_READ_8_8_8_DTR],
+ params->hwcaps.mask |= SNOR_HWCAPS_READ_8_8_8_DTR;
+ spi_nor_set_read_settings(&params->reads[SNOR_CMD_READ_8_8_8_DTR],
0, dummy, opcode,
SNOR_PROTO_8_8_8_DTR);

@@ -1210,7 +1215,7 @@ static int spi_nor_parse_profile1(struct spi_nor *nor,
* Page Program is "Required Command" in the xSPI Profile 1.0. Update
* the params->hwcaps.mask here.
*/
- nor->params->hwcaps.mask |= SNOR_HWCAPS_PP_8_8_8_DTR;
+ params->hwcaps.mask |= SNOR_HWCAPS_PP_8_8_8_DTR;

out:
kfree(dwords);
@@ -1231,7 +1236,7 @@ static int spi_nor_parse_profile1(struct spi_nor *nor,
static int spi_nor_parse_sccr(struct spi_nor *nor,
const struct sfdp_parameter_header *sccr_header)
{
- struct spi_nor_flash_parameter *params = nor->params;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
u32 *dwords, addr;
size_t len;
int ret;
@@ -1282,7 +1287,7 @@ static int spi_nor_parse_sccr(struct spi_nor *nor,
static int spi_nor_parse_sccr_mc(struct spi_nor *nor,
const struct sfdp_parameter_header *sccr_mc_header)
{
- struct spi_nor_flash_parameter *params = nor->params;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
u32 *dwords, addr;
u8 i, n_dice;
size_t len;
diff --git a/drivers/mtd/spi-nor/spansion.c b/drivers/mtd/spi-nor/spansion.c
index 15f9a80c10b9..fdbc428c49dd 100644
--- a/drivers/mtd/spi-nor/spansion.c
+++ b/drivers/mtd/spi-nor/spansion.c
@@ -88,8 +88,9 @@ static void spansion_nor_clear_sr(struct spi_nor *nor)

static int cypress_nor_sr_ready_and_clear_reg(struct spi_nor *nor, u64 addr)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_mem_op op =
- CYPRESS_NOR_RD_ANY_REG_OP(nor->params->addr_mode_nbytes, addr,
+ CYPRESS_NOR_RD_ANY_REG_OP(params->addr_mode_nbytes, addr,
0, nor->bouncebuf);
int ret;

@@ -124,7 +125,7 @@ static int cypress_nor_sr_ready_and_clear_reg(struct spi_nor *nor, u64 addr)
*/
static int cypress_nor_sr_ready_and_clear(struct spi_nor *nor)
{
- struct spi_nor_flash_parameter *params = nor->params;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
u64 addr;
int ret;
u8 i;
@@ -143,10 +144,11 @@ static int cypress_nor_sr_ready_and_clear(struct spi_nor *nor)

static int cypress_nor_octal_dtr_en(struct spi_nor *nor)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_mem_op op;
u8 *buf = nor->bouncebuf;
int ret;
- u8 addr_mode_nbytes = nor->params->addr_mode_nbytes;
+ u8 addr_mode_nbytes = params->addr_mode_nbytes;

/* Use 24 dummy cycles for memory array reads. */
*buf = SPINOR_REG_CYPRESS_CFR2_MEMLAT_11_24;
@@ -219,8 +221,9 @@ static int cypress_nor_octal_dtr_dis(struct spi_nor *nor)

static int cypress_nor_quad_enable_volatile_reg(struct spi_nor *nor, u64 addr)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_mem_op op;
- u8 addr_mode_nbytes = nor->params->addr_mode_nbytes;
+ u8 addr_mode_nbytes = params->addr_mode_nbytes;
u8 cfr1v_written;
int ret;

@@ -278,7 +281,7 @@ static int cypress_nor_quad_enable_volatile_reg(struct spi_nor *nor, u64 addr)
*/
static int cypress_nor_quad_enable_volatile(struct spi_nor *nor)
{
- struct spi_nor_flash_parameter *params = nor->params;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
u64 addr;
u8 i;
int ret;
@@ -361,6 +364,7 @@ static int cypress_nor_determine_addr_mode_by_sr1(struct spi_nor *nor,
*/
static int cypress_nor_set_addr_mode_nbytes(struct spi_nor *nor)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_mem_op op;
u8 addr_mode;
int ret;
@@ -402,16 +406,17 @@ static int cypress_nor_set_addr_mode_nbytes(struct spi_nor *nor)
return spi_nor_set_4byte_addr_mode(nor, true);
}

- nor->params->addr_nbytes = addr_mode;
- nor->params->addr_mode_nbytes = addr_mode;
+ params->addr_nbytes = addr_mode;
+ params->addr_mode_nbytes = addr_mode;

return 0;
}

static int cypress_nor_get_page_size_single_chip(struct spi_nor *nor)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_mem_op op =
- CYPRESS_NOR_RD_ANY_REG_OP(nor->params->addr_mode_nbytes,
+ CYPRESS_NOR_RD_ANY_REG_OP(params->addr_mode_nbytes,
SPINOR_REG_CYPRESS_CFR3V, 0,
nor->bouncebuf);
int ret;
@@ -421,9 +426,9 @@ static int cypress_nor_get_page_size_single_chip(struct spi_nor *nor)
return ret;

if (nor->bouncebuf[0] & SPINOR_REG_CYPRESS_CFR3_PGSZ)
- nor->params->page_size = 512;
+ params->page_size = 512;
else
- nor->params->page_size = 256;
+ params->page_size = 256;

return 0;
}
@@ -431,10 +436,10 @@ static int cypress_nor_get_page_size_single_chip(struct spi_nor *nor)

static int cypress_nor_get_page_size_mcp(struct spi_nor *nor)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_mem_op op =
- CYPRESS_NOR_RD_ANY_REG_OP(nor->params->addr_mode_nbytes,
+ CYPRESS_NOR_RD_ANY_REG_OP(params->addr_mode_nbytes,
0, 0, nor->bouncebuf);
- struct spi_nor_flash_parameter *params = nor->params;
int ret;
u8 i;

@@ -471,19 +476,23 @@ static int cypress_nor_get_page_size_mcp(struct spi_nor *nor)
*/
static int cypress_nor_get_page_size(struct spi_nor *nor)
{
- if (nor->params->n_dice)
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
+ if (params->n_dice)
return cypress_nor_get_page_size_mcp(nor);
return cypress_nor_get_page_size_single_chip(nor);
}

static void cypress_nor_ecc_init(struct spi_nor *nor)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
/*
* Programming is supported only in 16-byte ECC data unit granularity.
* Byte-programming, bit-walking, or multiple program operations to the
* same ECC data unit without an erase are not allowed.
*/
- nor->params->writesize = 16;
+ params->writesize = 16;
nor->flags |= SNOR_F_ECC;
}

@@ -492,6 +501,7 @@ s25fs256t_post_bfpt_fixup(struct spi_nor *nor,
const struct sfdp_parameter_header *bfpt_header,
const struct sfdp_bfpt *bfpt)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_mem_op op;
int ret;

@@ -501,7 +511,7 @@ s25fs256t_post_bfpt_fixup(struct spi_nor *nor,

/* Read Architecture Configuration Register (ARCFN) */
op = (struct spi_mem_op)
- CYPRESS_NOR_RD_ANY_REG_OP(nor->params->addr_mode_nbytes,
+ CYPRESS_NOR_RD_ANY_REG_OP(params->addr_mode_nbytes,
SPINOR_REG_CYPRESS_ARCFN, 1,
nor->bouncebuf);
ret = spi_nor_read_any_reg(nor, &op, nor->reg_proto);
@@ -517,7 +527,7 @@ s25fs256t_post_bfpt_fixup(struct spi_nor *nor,

static int s25fs256t_post_sfdp_fixup(struct spi_nor *nor)
{
- struct spi_nor_flash_parameter *params = nor->params;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);

/* PP_1_1_4_4B is supported but missing in 4BAIT. */
params->hwcaps.mask |= SNOR_HWCAPS_PP_1_1_4;
@@ -545,21 +555,23 @@ s25hx_t_post_bfpt_fixup(struct spi_nor *nor,
const struct sfdp_bfpt *bfpt)
{
int ret;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);

ret = cypress_nor_set_addr_mode_nbytes(nor);
if (ret)
return ret;

/* Replace Quad Enable with volatile version */
- nor->params->quad_enable = cypress_nor_quad_enable_volatile;
+ params->quad_enable = cypress_nor_quad_enable_volatile;

return 0;
}

static int s25hx_t_post_sfdp_fixup(struct spi_nor *nor)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_nor_erase_type *erase_type =
- nor->params->erase_map.erase_type;
+ params->erase_map.erase_type;
unsigned int i;

/*
@@ -580,15 +592,15 @@ static int s25hx_t_post_sfdp_fixup(struct spi_nor *nor)
}

/* The 2 Gb parts duplicate info and advertise 4 dice instead of 2. */
- if (nor->params->size == SZ_256M)
- nor->params->n_dice = 2;
+ if (params->size == SZ_256M)
+ params->n_dice = 2;

return cypress_nor_get_page_size(nor);
}

static void s25hx_t_late_init(struct spi_nor *nor)
{
- struct spi_nor_flash_parameter *params = nor->params;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);

/* Fast Read 4B requires mode cycles */
params->reads[SNOR_CMD_READ_FAST].num_mode_clocks = 8;
@@ -624,22 +636,24 @@ static int cypress_nor_octal_dtr_enable(struct spi_nor *nor, bool enable)

static int s28hx_t_post_sfdp_fixup(struct spi_nor *nor)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
/*
* On older versions of the flash the xSPI Profile 1.0 table has the
* 8D-8D-8D Fast Read opcode as 0x00. But it actually should be 0xEE.
*/
- if (nor->params->reads[SNOR_CMD_READ_8_8_8_DTR].opcode == 0)
- nor->params->reads[SNOR_CMD_READ_8_8_8_DTR].opcode =
+ if (params->reads[SNOR_CMD_READ_8_8_8_DTR].opcode == 0)
+ params->reads[SNOR_CMD_READ_8_8_8_DTR].opcode =
SPINOR_OP_CYPRESS_RD_FAST;

/* This flash is also missing the 4-byte Page Program opcode bit. */
- spi_nor_set_pp_settings(&nor->params->page_programs[SNOR_CMD_PP],
+ spi_nor_set_pp_settings(&params->page_programs[SNOR_CMD_PP],
SPINOR_OP_PP_4B, SNOR_PROTO_1_1_1);
/*
* Since xSPI Page Program opcode is backward compatible with
* Legacy SPI, use Legacy SPI opcode there as well.
*/
- spi_nor_set_pp_settings(&nor->params->page_programs[SNOR_CMD_PP_8_8_8_DTR],
+ spi_nor_set_pp_settings(&params->page_programs[SNOR_CMD_PP_8_8_8_DTR],
SPINOR_OP_PP_4B, SNOR_PROTO_8_8_8_DTR);

/*
@@ -647,7 +661,7 @@ static int s28hx_t_post_sfdp_fixup(struct spi_nor *nor)
* address bytes needed for Read Status Register command as 0 but the
* actual value for that is 4.
*/
- nor->params->rdsr_addr_nbytes = 4;
+ params->rdsr_addr_nbytes = 4;

return cypress_nor_get_page_size(nor);
}
@@ -667,7 +681,9 @@ static int s28hx_t_post_bfpt_fixup(struct spi_nor *nor,

static void s28hx_t_late_init(struct spi_nor *nor)
{
- nor->params->octal_dtr_enable = cypress_nor_octal_dtr_enable;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
+ params->octal_dtr_enable = cypress_nor_octal_dtr_enable;
cypress_nor_ecc_init(nor);
}

@@ -682,13 +698,15 @@ s25fs_s_nor_post_bfpt_fixups(struct spi_nor *nor,
const struct sfdp_parameter_header *bfpt_header,
const struct sfdp_bfpt *bfpt)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
/*
* The S25FS-S chip family reports 512-byte pages in BFPT but
* in reality the write buffer still wraps at the safe default
* of 256 bytes. Overwrite the page size advertised by BFPT
* to get the writes working.
*/
- nor->params->page_size = 256;
+ params->page_size = 256;

return 0;
}
@@ -878,7 +896,9 @@ static int spansion_nor_sr_ready_and_clear(struct spi_nor *nor)

static void spansion_nor_late_init(struct spi_nor *nor)
{
- if (nor->params->size > SZ_16M) {
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
+ if (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;
@@ -886,7 +906,7 @@ static void spansion_nor_late_init(struct spi_nor *nor)
}

if (nor->info->mfr_flags & USE_CLSR)
- nor->params->ready = spansion_nor_sr_ready_and_clear;
+ params->ready = spansion_nor_sr_ready_and_clear;
}

static const struct spi_nor_fixups spansion_nor_fixups = {
diff --git a/drivers/mtd/spi-nor/sst.c b/drivers/mtd/spi-nor/sst.c
index 688eb20c763e..f6edc6c962f5 100644
--- a/drivers/mtd/spi-nor/sst.c
+++ b/drivers/mtd/spi-nor/sst.c
@@ -20,10 +20,11 @@ static int sst26vf_nor_lock(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)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
int ret;

/* We only support unlocking the entire flash array. */
- if (ofs != 0 || len != nor->params->size)
+ if (ofs != 0 || len != params->size)
return -EINVAL;

ret = spi_nor_read_cr(nor, nor->bouncebuf);
@@ -51,7 +52,9 @@ static const struct spi_nor_locking_ops sst26vf_nor_locking_ops = {

static void sst26vf_nor_late_init(struct spi_nor *nor)
{
- nor->params->locking_ops = &sst26vf_nor_locking_ops;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
+ params->locking_ops = &sst26vf_nor_locking_ops;
}

static const struct spi_nor_fixups sst26vf_nor_fixups = {
diff --git a/drivers/mtd/spi-nor/swp.c b/drivers/mtd/spi-nor/swp.c
index 0ba716e84377..fa023c4112b1 100644
--- a/drivers/mtd/spi-nor/swp.c
+++ b/drivers/mtd/spi-nor/swp.c
@@ -340,11 +340,14 @@ static const struct spi_nor_locking_ops spi_nor_sr_locking_ops = {

void spi_nor_init_default_locking_ops(struct spi_nor *nor)
{
- nor->params->locking_ops = &spi_nor_sr_locking_ops;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
+ params->locking_ops = &spi_nor_sr_locking_ops;
}

static int spi_nor_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
{
+ struct spi_nor_flash_parameter *params;
struct spi_nor *nor = mtd_to_spi_nor(mtd);
int ret;

@@ -352,7 +355,8 @@ static int spi_nor_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
if (ret)
return ret;

- ret = nor->params->locking_ops->lock(nor, ofs, len);
+ params = spi_nor_get_params(nor, 0);
+ ret = params->locking_ops->lock(nor, ofs, len);

spi_nor_unlock_and_unprep(nor);
return ret;
@@ -360,6 +364,7 @@ static int spi_nor_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)

static int spi_nor_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
{
+ struct spi_nor_flash_parameter *params;
struct spi_nor *nor = mtd_to_spi_nor(mtd);
int ret;

@@ -367,7 +372,8 @@ static int spi_nor_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
if (ret)
return ret;

- ret = nor->params->locking_ops->unlock(nor, ofs, len);
+ params = spi_nor_get_params(nor, 0);
+ ret = params->locking_ops->unlock(nor, ofs, len);

spi_nor_unlock_and_unprep(nor);
return ret;
@@ -375,6 +381,7 @@ static int spi_nor_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)

static int spi_nor_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len)
{
+ struct spi_nor_flash_parameter *params;
struct spi_nor *nor = mtd_to_spi_nor(mtd);
int ret;

@@ -382,7 +389,8 @@ static int spi_nor_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len)
if (ret)
return ret;

- ret = nor->params->locking_ops->is_locked(nor, ofs, len);
+ params = spi_nor_get_params(nor, 0);
+ ret = params->locking_ops->is_locked(nor, ofs, len);

spi_nor_unlock_and_unprep(nor);
return ret;
@@ -402,6 +410,7 @@ static int spi_nor_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len)
*/
void spi_nor_try_unlock_all(struct spi_nor *nor)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
int ret;

if (!(nor->flags & SNOR_F_HAS_LOCK))
@@ -409,16 +418,17 @@ void spi_nor_try_unlock_all(struct spi_nor *nor)

dev_dbg(nor->dev, "Unprotecting entire flash array\n");

- ret = spi_nor_unlock(&nor->mtd, 0, nor->params->size);
+ ret = spi_nor_unlock(&nor->mtd, 0, params->size);
if (ret)
dev_dbg(nor->dev, "Failed to unlock the entire flash memory array\n");
}

void spi_nor_set_mtd_locking_ops(struct spi_nor *nor)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct mtd_info *mtd = &nor->mtd;

- if (!nor->params->locking_ops)
+ if (!params->locking_ops)
return;

mtd->_lock = spi_nor_lock;
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index 834d6ba5ce70..5b433b74cbdd 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -218,7 +218,7 @@ static const struct spi_nor_otp_ops winbond_nor_otp_ops = {

static void winbond_nor_late_init(struct spi_nor *nor)
{
- struct spi_nor_flash_parameter *params = nor->params;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);

if (params->otp.org->n_regions)
params->otp.ops = &winbond_nor_otp_ops;
diff --git a/drivers/mtd/spi-nor/xilinx.c b/drivers/mtd/spi-nor/xilinx.c
index 7175de8aa336..59bec7a24fc8 100644
--- a/drivers/mtd/spi-nor/xilinx.c
+++ b/drivers/mtd/spi-nor/xilinx.c
@@ -56,7 +56,8 @@ static const struct flash_info xilinx_nor_parts[] = {
*/
static u32 s3an_nor_convert_addr(struct spi_nor *nor, u32 addr)
{
- u32 page_size = nor->params->page_size;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+ u32 page_size = params->page_size;
u32 offset, page;

offset = addr % page_size;
@@ -116,6 +117,7 @@ static int xilinx_nor_sr_ready(struct spi_nor *nor)
static int xilinx_nor_setup(struct spi_nor *nor,
const struct spi_nor_hwcaps *hwcaps)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
u32 page_size;
int ret;

@@ -141,14 +143,14 @@ static int xilinx_nor_setup(struct spi_nor *nor,
*/
if (nor->bouncebuf[0] & XSR_PAGESIZE) {
/* Flash in Power of 2 mode */
- page_size = (nor->params->page_size == 264) ? 256 : 512;
- nor->params->page_size = page_size;
+ page_size = (params->page_size == 264) ? 256 : 512;
+ params->page_size = page_size;
nor->mtd.writebufsize = page_size;
- nor->params->size = 8 * page_size * nor->info->n_sectors;
+ params->size = 8 * page_size * nor->info->n_sectors;
nor->mtd.erasesize = 8 * page_size;
} else {
/* Flash in Default addressing mode */
- nor->params->convert_addr = s3an_nor_convert_addr;
+ params->convert_addr = s3an_nor_convert_addr;
nor->mtd.erasesize = nor->info->sector_size;
}

@@ -157,8 +159,10 @@ 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 = xilinx_nor_sr_ready;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+
+ params->setup = xilinx_nor_setup;
+ params->ready = xilinx_nor_sr_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 cdcfe0fd2e7d..59909e7d6f53 100644
--- a/include/linux/mtd/spi-nor.h
+++ b/include/linux/mtd/spi-nor.h
@@ -433,6 +433,16 @@ static inline struct device_node *spi_nor_get_flash_node(struct spi_nor *nor)
return mtd_get_of_node(&nor->mtd);
}

+static inline struct spi_nor_flash_parameter *spi_nor_get_params(const struct spi_nor *nor, u8 idx)
+{
+ return nor->params;
+}
+
+static inline void spi_nor_set_params(struct spi_nor *nor, u8 idx,
+ struct spi_nor_flash_parameter *params)
+{
+ nor->params = params;
+}
/**
* spi_nor_scan() - scan the SPI NOR
* @nor: the spi_nor structure
--
2.17.1