[PATCH v10 3/8] mtd: spi-nor: Add APIs to set/get nor->params

From: Amit Kumar Mahapatra
Date: Sat Nov 18 2023 - 08:55:29 EST

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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 | 136 ++++++++++++++++++++-----------
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 | 57 +++++++------
drivers/mtd/spi-nor/sst.c | 7 +-
drivers/mtd/spi-nor/swp.c | 25 ++++--
drivers/mtd/spi-nor/winbond.c | 2 +-
drivers/mtd/spi-nor/xilinx.c | 18 ++--
include/linux/mtd/spi-nor.h | 10 +++
15 files changed, 257 insertions(+), 136 deletions(-)

diff --git a/drivers/mtd/spi-nor/atmel.c b/drivers/mtd/spi-nor/atmel.c
index e13b8d2dd50a..b63cbe18162c 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 int 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;

return 0;
}
@@ -71,11 +74,12 @@ 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);
@@ -133,9 +137,10 @@ 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);
@@ -153,7 +158,9 @@ static const struct spi_nor_locking_ops atmel_nor_global_protection_ops = {

static int 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;

return 0;
}
diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index 1c443fe568cf..72c80d8b5858 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;
@@ -872,7 +875,7 @@ static int spi_nor_write_16bit_sr_and_check(struct spi_nor *nor, u8 sr1)
return ret;
} else if (spi_nor_get_protocol_width(nor->read_proto) == 4 &&
spi_nor_get_protocol_width(nor->write_proto) == 4 &&
- nor->params->quad_enable) {
+ params->quad_enable) {
/*
* If the Status Register 2 Read command (35h) is not
* supported, we should at least be sure we don't
@@ -1150,17 +1153,21 @@ 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;

@@ -1302,6 +1309,7 @@ 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;
@@ -1313,7 +1321,7 @@ 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;
@@ -1332,13 +1340,14 @@ 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);

@@ -1379,6 +1388,7 @@ 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;
@@ -1390,7 +1400,7 @@ 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;
@@ -1410,13 +1420,14 @@ 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);

@@ -1457,10 +1468,12 @@ 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);
}

/*
@@ -1680,7 +1693,8 @@ 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;
@@ -2124,9 +2138,10 @@ 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);

@@ -2134,6 +2149,9 @@ 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;
@@ -2289,6 +2307,8 @@ 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
@@ -2297,7 +2317,7 @@ 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 */
@@ -2361,7 +2381,7 @@ 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. */
@@ -2462,6 +2482,7 @@ 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)
@@ -2471,7 +2492,7 @@ 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;

@@ -2492,6 +2513,7 @@ 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;

@@ -2502,7 +2524,7 @@ 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;
@@ -2568,7 +2590,8 @@ 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;
int i;
@@ -2611,7 +2634,7 @@ 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;

@@ -2671,8 +2694,10 @@ 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
@@ -2693,7 +2718,7 @@ 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;
}
@@ -2715,10 +2740,11 @@ 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)
@@ -2753,7 +2779,7 @@ 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 struct flash_info *info = nor->info;
const u8 no_sfdp_flags = info->no_sfdp_flags;
@@ -2823,6 +2849,7 @@ static void spi_nor_no_sfdp_init_params(struct spi_nor *nor)
*/
static void spi_nor_init_flags(struct spi_nor *nor)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct device_node *np = spi_nor_get_flash_node(nor);
const u16 flags = nor->info->flags;

@@ -2853,7 +2880,7 @@ 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 & SPI_NOR_RWW && nor->params->n_banks > 1 &&
+ if (flags & SPI_NOR_RWW && params->n_banks > 1 &&
!nor->controller_ops)
nor->flags |= SNOR_F_RWW;
}
@@ -2887,7 +2914,7 @@ static void spi_nor_init_fixup_flags(struct spi_nor *nor)
*/
static int 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);
int ret;

if (nor->manufacturer && nor->manufacturer->fixups &&
@@ -2914,7 +2941,7 @@ static int 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);

if (params->n_banks > 1)
@@ -2933,12 +2960,13 @@ static int 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;
}
}
@@ -2973,7 +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);

@@ -3060,12 +3088,15 @@ 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 (spi_nor_needs_sfdp(nor)) {
@@ -3091,9 +3122,10 @@ static int spi_nor_init_params(struct spi_nor *nor)
*/
static int spi_nor_set_octal_dtr(struct spi_nor *nor, bool enable)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
int ret;

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

if (!(nor->read_proto == SNOR_PROTO_8_8_8_DTR &&
@@ -3103,7 +3135,7 @@ static int spi_nor_set_octal_dtr(struct spi_nor *nor, bool enable)
if (!(nor->flags & SNOR_F_IO_MODE_EN_VOLATILE))
return 0;

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

@@ -3123,14 +3155,16 @@ static int spi_nor_set_octal_dtr(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);
}

/**
@@ -3142,7 +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);
@@ -3395,6 +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;

@@ -3413,9 +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)
@@ -3469,7 +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.
*/
@@ -3543,13 +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;

@@ -3574,13 +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;

@@ -3603,6 +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;
@@ -3649,13 +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 6e163cb5b478..72a901b88ea9 100644
--- a/drivers/mtd/spi-nor/debugfs.c
+++ b/drivers/mtd/spi-nor/debugfs.c
@@ -76,7 +76,7 @@ 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;
@@ -184,7 +184,7 @@ 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 ef1edd0add70..338ce989df22 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 18d9a00aa22e..ea148a3a5e1f 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 int 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 */
@@ -131,7 +134,9 @@ 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 ea6be95e75a5..be1f273e3ce2 100644
--- a/drivers/mtd/spi-nor/macronix.c
+++ b/drivers/mtd/spi-nor/macronix.c
@@ -187,13 +187,17 @@ 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 int 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;

return 0;
}
diff --git a/drivers/mtd/spi-nor/micron-st.c b/drivers/mtd/spi-nor/micron-st.c
index 8920547c12bf..813a5b1a269b 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_set_octal_dtr(struct spi_nor *nor, bool enable)

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

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;
}
@@ -457,14 +462,15 @@ 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.
@@ -567,14 +573,16 @@ 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 int 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 12921344373d..63f46e443b29 100644
--- a/drivers/mtd/spi-nor/spansion.c
+++ b/drivers/mtd/spi-nor/spansion.c
@@ -78,7 +78,8 @@ struct spansion_nor_params {
*/
static void spansion_nor_clear_sr(struct spi_nor *nor)
{
- const struct spansion_nor_params *priv_params = nor->params->priv;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+ const struct spansion_nor_params *priv_params = params->priv;
int ret;

if (nor->spimem) {
@@ -98,7 +99,7 @@ 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 = nor->params;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_mem_op op =
CYPRESS_NOR_RD_ANY_REG_OP(params->addr_mode_nbytes, addr,
0, nor->bouncebuf);
@@ -140,7 +141,7 @@ 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;
@@ -159,10 +160,11 @@ static int cypress_nor_sr_ready_and_clear(struct spi_nor *nor)

static int cypress_nor_set_memlat(struct spi_nor *nor, u64 addr)
{
+ 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;

op = (struct spi_mem_op)
CYPRESS_NOR_RD_ANY_REG_OP(addr_mode_nbytes, addr, 0, buf);
@@ -189,13 +191,14 @@ static int cypress_nor_set_memlat(struct spi_nor *nor, u64 addr)

static int cypress_nor_set_octal_dtr_bits(struct spi_nor *nor, u64 addr)
{
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_mem_op op;
u8 *buf = nor->bouncebuf;

/* Set the octal and DTR enable bits. */
buf[0] = SPINOR_REG_CYPRESS_CFR5_OCT_DTR_EN;
op = (struct spi_mem_op)
- CYPRESS_NOR_WR_ANY_REG_OP(nor->params->addr_mode_nbytes,
+ CYPRESS_NOR_WR_ANY_REG_OP(params->addr_mode_nbytes,
addr, 1, buf);

return spi_nor_write_any_volatile_reg(nor, &op, nor->reg_proto);
@@ -203,7 +206,7 @@ static int cypress_nor_set_octal_dtr_bits(struct spi_nor *nor, u64 addr)

static int cypress_nor_octal_dtr_en(struct spi_nor *nor)
{
- const struct spi_nor_flash_parameter *params = nor->params;
+ const struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
u8 *buf = nor->bouncebuf;
u64 addr;
int i, ret;
@@ -253,7 +256,7 @@ static int cypress_nor_set_single_spi_bits(struct spi_nor *nor, u64 addr)

static int cypress_nor_octal_dtr_dis(struct spi_nor *nor)
{
- const struct spi_nor_flash_parameter *params = nor->params;
+ const struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
u8 *buf = nor->bouncebuf;
u64 addr;
int i, ret;
@@ -280,8 +283,9 @@ 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;

@@ -339,7 +343,7 @@ 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;
@@ -418,6 +422,7 @@ 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;
@@ -459,8 +464,8 @@ 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;
}
@@ -477,10 +482,10 @@ static int cypress_nor_set_addr_mode_nbytes(struct spi_nor *nor)
*/
static int cypress_nor_get_page_size(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;

@@ -507,12 +512,14 @@ static int cypress_nor_get_page_size(struct spi_nor *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;
}

@@ -521,6 +528,7 @@ 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;

@@ -530,7 +538,7 @@ 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);
@@ -546,7 +554,7 @@ 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);

/*
* S25FS256T does not define the SCCR map, but we would like to use the
@@ -588,20 +596,21 @@ 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 = nor->params;
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
struct spi_nor_erase_type *erase_type = params->erase_map.erase_type;
unsigned int i;

@@ -637,7 +646,7 @@ static int s25hx_t_post_sfdp_fixup(struct spi_nor *nor)

static int 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;
@@ -671,7 +680,7 @@ static int cypress_nor_set_octal_dtr(struct spi_nor *nor, bool enable)

static int s28hx_t_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);

if (!params->n_dice || !params->vreg_offset) {
dev_err(nor->dev, "%s failed. The volatile register offset could not be retrieved from SFDP.\n",
@@ -720,7 +729,7 @@ static int s28hx_t_post_bfpt_fixup(struct spi_nor *nor,

static int s28hx_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);

params->set_octal_dtr = cypress_nor_set_octal_dtr;
params->ready = cypress_nor_sr_ready_and_clear;
@@ -740,13 +749,15 @@ 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;
}
@@ -1045,7 +1056,7 @@ static int spansion_nor_sr_ready_and_clear(struct spi_nor *nor)

static int spansion_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);
struct spansion_nor_params *priv_params;
u8 mfr_flags = nor->info->mfr_flags;

diff --git a/drivers/mtd/spi-nor/sst.c b/drivers/mtd/spi-nor/sst.c
index 44d2a546bf17..8d6e50cfef62 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 int 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;

return 0;
}
diff --git a/drivers/mtd/spi-nor/swp.c b/drivers/mtd/spi-nor/swp.c
index 585813310ee1..78febd6e1a00 100644
--- a/drivers/mtd/spi-nor/swp.c
+++ b/drivers/mtd/spi-nor/swp.c
@@ -39,7 +39,8 @@ static u64 spi_nor_get_min_prot_length_sr(struct spi_nor *nor)
* the flash. For now, we need to have that ugly default.
*/
unsigned int sector_size = nor->info->sector_size ?: SPI_NOR_DEFAULT_SECTOR_SIZE;
- u64 n_sectors = div_u64(nor->params->size, sector_size);
+ struct spi_nor_flash_parameter *params = spi_nor_get_params(nor, 0);
+ u64 n_sectors = div_u64(params->size, sector_size);
u8 mask = spi_nor_get_sr_bp_mask(nor);

/* Reserved one for "protect none" and one for "protect all". */
@@ -350,11 +351,14 @@ 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;

@@ -362,7 +366,8 @@ 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;
@@ -370,6 +375,7 @@ 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;

@@ -377,7 +383,8 @@ 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;
@@ -385,6 +392,7 @@ 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;

@@ -392,7 +400,8 @@ 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;
@@ -412,6 +421,7 @@ 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))
@@ -419,16 +429,17 @@ 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 142fb27b2ea9..cdbec66aed91 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -303,7 +303,7 @@ static const struct spi_nor_otp_ops winbond_nor_otp_ops = {

static int 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)
params->otp.ops = &winbond_nor_otp_ops;
diff --git a/drivers/mtd/spi-nor/xilinx.c b/drivers/mtd/spi-nor/xilinx.c
index f99118c691b0..046dfba6b166 100644
--- a/drivers/mtd/spi-nor/xilinx.c
+++ b/drivers/mtd/spi-nor/xilinx.c
@@ -50,7 +50,8 @@ 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;
@@ -110,6 +111,7 @@ 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;

@@ -135,14 +137,14 @@ 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 = nor->info->size;
+ params->size = nor->info->size;
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;
}

@@ -151,8 +153,10 @@ static int xilinx_nor_setup(struct spi_nor *nor,

static int 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;

return 0;
}
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

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