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mtd: spinand: Add a ->configure_chip() hook

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There is already a manufacturer hook, which is manufacturer specific but
not chip specific. We no longer have access to the actual NAND identity
at this stage so let's add a per-chip configuration hook to align the
chip configuration (if any) with the core's setting.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
This commit is contained in:
Miquel Raynal
2025-06-18 14:14:22 +02:00
parent d81ad9d78e
commit da55809ebb
2 changed files with 21 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/mtd/nand/spi/core.c
View File

@@ -1253,8 +1253,19 @@ static int spinand_id_detect(struct spinand_device *spinand)
static int spinand_manufacturer_init(struct spinand_device *spinand)
{
if (spinand->manufacturer->ops->init)
return spinand->manufacturer->ops->init(spinand);
int ret;
if (spinand->manufacturer->ops->init) {
ret = spinand->manufacturer->ops->init(spinand);
if (ret)
return ret;
}
if (spinand->configure_chip) {
ret = spinand->configure_chip(spinand);
if (ret)
return ret;
}
return 0;
}
@@ -1349,6 +1360,7 @@ int spinand_match_and_init(struct spinand_device *spinand,
spinand->flags = table[i].flags;
spinand->id.len = 1 + table[i].devid.len;
spinand->select_target = table[i].select_target;
spinand->configure_chip = table[i].configure_chip;
spinand->set_cont_read = table[i].set_cont_read;
spinand->fact_otp = &table[i].fact_otp;
spinand->user_otp = &table[i].user_otp;

7
include/linux/mtd/spinand.h
View File

@@ -493,6 +493,7 @@ struct spinand_user_otp {
* @op_variants.update_cache: variants of the update-cache operation
* @select_target: function used to select a target/die. Required only for
* multi-die chips
* @configure_chip: Align the chip configuration with the core settings
* @set_cont_read: enable/disable continuous cached reads
* @fact_otp: SPI NAND factory OTP info.
* @user_otp: SPI NAND user OTP info.
@@ -516,6 +517,7 @@ struct spinand_info {
} op_variants;
int (*select_target)(struct spinand_device *spinand,
unsigned int target);
int (*configure_chip)(struct spinand_device *spinand);
int (*set_cont_read)(struct spinand_device *spinand,
bool enable);
struct spinand_fact_otp fact_otp;
@@ -548,6 +550,9 @@ struct spinand_info {
#define SPINAND_SELECT_TARGET(__func) \
.select_target = __func
#define SPINAND_CONFIGURE_CHIP(__configure_chip) \
.configure_chip = __configure_chip
#define SPINAND_CONT_READ(__set_cont_read) \
.set_cont_read = __set_cont_read
@@ -616,6 +621,7 @@ struct spinand_dirmap {
* passed in spi_mem_op be DMA-able, so we can't based the bufs on
* the stack
* @manufacturer: SPI NAND manufacturer information
* @configure_chip: Align the chip configuration with the core settings
* @cont_read_possible: Field filled by the core once the whole system
* configuration is known to tell whether continuous reads are
* suitable to use or not in general with this chip/configuration.
@@ -656,6 +662,7 @@ struct spinand_device {
const struct spinand_manufacturer *manufacturer;
void *priv;
int (*configure_chip)(struct spinand_device *spinand);
bool cont_read_possible;
int (*set_cont_read)(struct spinand_device *spinand,
bool enable);