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Message-Id: <20230405062106.49594-1-tudor.ambarus@linaro.org>
Date: Wed, 5 Apr 2023 09:21:06 +0300
From: Tudor Ambarus <tudor.ambarus@...aro.org>
To: tkuw584924@...il.com, Takahiro.Kuwano@...ineon.com,
pratyush@...nel.org, michael@...le.cc
Cc: bacem.daassi@...ineon.com, miquel.raynal@...tlin.com,
richard@....at, linux-mtd@...ts.infradead.org,
linux-kernel@...r.kernel.org,
Tudor Ambarus <tudor.ambarus@...aro.org>
Subject: [PATCH v2] mtd: spi-nor: Allow post_sfdp hook to return errors
Multi die flashes like s25hl02gt need to determine the page_size at
run-time by querying a configuration register for each die. Since the
number of dice is determined in an optional SFDP table, SCCR MC, the
page size configuration must be done in the post_sfdp hook. Allow
post_sfdp to return errors, as reading the configuration register might
return errors.
Signed-off-by: Tudor Ambarus <tudor.ambarus@...aro.org>
---
v2: Fix own mistake in spi_nor_post_sfdp_fixups, do not exclude the info
post_sfdp call when the manufacturer post_sfdp is defined.
drivers/mtd/spi-nor/core.h | 2 +-
drivers/mtd/spi-nor/micron-st.c | 4 +++-
drivers/mtd/spi-nor/sfdp.c | 17 ++++++++++++-----
drivers/mtd/spi-nor/spansion.c | 12 +++++++++---
4 files changed, 25 insertions(+), 10 deletions(-)
diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h
index 8cfa82ed06c7..a9e5e091547d 100644
--- a/drivers/mtd/spi-nor/core.h
+++ b/drivers/mtd/spi-nor/core.h
@@ -426,7 +426,7 @@ struct spi_nor_fixups {
int (*post_bfpt)(struct spi_nor *nor,
const struct sfdp_parameter_header *bfpt_header,
const struct sfdp_bfpt *bfpt);
- void (*post_sfdp)(struct spi_nor *nor);
+ int (*post_sfdp)(struct spi_nor *nor);
void (*late_init)(struct spi_nor *nor);
};
diff --git a/drivers/mtd/spi-nor/micron-st.c b/drivers/mtd/spi-nor/micron-st.c
index a6f080112a51..4b919756a205 100644
--- a/drivers/mtd/spi-nor/micron-st.c
+++ b/drivers/mtd/spi-nor/micron-st.c
@@ -131,7 +131,7 @@ static void mt35xu512aba_default_init(struct spi_nor *nor)
nor->params->octal_dtr_enable = micron_st_nor_octal_dtr_enable;
}
-static void mt35xu512aba_post_sfdp_fixup(struct spi_nor *nor)
+static int mt35xu512aba_post_sfdp_fixup(struct spi_nor *nor)
{
/* Set the Fast Read settings. */
nor->params->hwcaps.mask |= SNOR_HWCAPS_READ_8_8_8_DTR;
@@ -149,6 +149,8 @@ static void mt35xu512aba_post_sfdp_fixup(struct spi_nor *nor)
* disable it.
*/
nor->params->quad_enable = NULL;
+
+ return 0;
}
static const struct spi_nor_fixups mt35xu512aba_fixups = {
diff --git a/drivers/mtd/spi-nor/sfdp.c b/drivers/mtd/spi-nor/sfdp.c
index 69e47c9778a2..e184b67f3c9f 100644
--- a/drivers/mtd/spi-nor/sfdp.c
+++ b/drivers/mtd/spi-nor/sfdp.c
@@ -1260,14 +1260,21 @@ static int spi_nor_parse_sccr(struct spi_nor *nor,
* Used to tweak various flash parameters when information provided by the SFDP
* tables are wrong.
*/
-static void spi_nor_post_sfdp_fixups(struct spi_nor *nor)
+static int spi_nor_post_sfdp_fixups(struct spi_nor *nor)
{
+ int ret;
+
if (nor->manufacturer && nor->manufacturer->fixups &&
- nor->manufacturer->fixups->post_sfdp)
- nor->manufacturer->fixups->post_sfdp(nor);
+ nor->manufacturer->fixups->post_sfdp) {
+ ret = nor->manufacturer->fixups->post_sfdp(nor);
+ if (ret)
+ return ret;
+ }
if (nor->info->fixups && nor->info->fixups->post_sfdp)
- nor->info->fixups->post_sfdp(nor);
+ return nor->info->fixups->post_sfdp(nor);
+
+ return 0;
}
/**
@@ -1477,7 +1484,7 @@ int spi_nor_parse_sfdp(struct spi_nor *nor)
}
}
- spi_nor_post_sfdp_fixups(nor);
+ err = spi_nor_post_sfdp_fixups(nor);
exit:
kfree(param_headers);
return err;
diff --git a/drivers/mtd/spi-nor/spansion.c b/drivers/mtd/spi-nor/spansion.c
index c937f0ac61de..519fdad79a19 100644
--- a/drivers/mtd/spi-nor/spansion.c
+++ b/drivers/mtd/spi-nor/spansion.c
@@ -370,7 +370,7 @@ s25fs256t_post_bfpt_fixup(struct spi_nor *nor,
return cypress_nor_get_page_size(nor);
}
-static void s25fs256t_post_sfdp_fixup(struct spi_nor *nor)
+static int s25fs256t_post_sfdp_fixup(struct spi_nor *nor)
{
struct spi_nor_flash_parameter *params = nor->params;
@@ -379,6 +379,8 @@ static void s25fs256t_post_sfdp_fixup(struct spi_nor *nor)
spi_nor_set_pp_settings(¶ms->page_programs[SNOR_CMD_PP_1_1_4],
SPINOR_OP_PP_1_1_4_4B,
SNOR_PROTO_1_1_4);
+
+ return 0;
}
static void s25fs256t_late_init(struct spi_nor *nor)
@@ -409,7 +411,7 @@ s25hx_t_post_bfpt_fixup(struct spi_nor *nor,
return cypress_nor_get_page_size(nor);
}
-static void s25hx_t_post_sfdp_fixup(struct spi_nor *nor)
+static int s25hx_t_post_sfdp_fixup(struct spi_nor *nor)
{
struct spi_nor_erase_type *erase_type =
nor->params->erase_map.erase_type;
@@ -431,6 +433,8 @@ static void s25hx_t_post_sfdp_fixup(struct spi_nor *nor)
break;
}
}
+
+ return 0;
}
static void s25hx_t_late_init(struct spi_nor *nor)
@@ -463,7 +467,7 @@ static int cypress_nor_octal_dtr_enable(struct spi_nor *nor, bool enable)
cypress_nor_octal_dtr_dis(nor);
}
-static void s28hx_t_post_sfdp_fixup(struct spi_nor *nor)
+static int s28hx_t_post_sfdp_fixup(struct spi_nor *nor)
{
/*
* On older versions of the flash the xSPI Profile 1.0 table has the
@@ -489,6 +493,8 @@ static void s28hx_t_post_sfdp_fixup(struct spi_nor *nor)
* actual value for that is 4.
*/
nor->params->rdsr_addr_nbytes = 4;
+
+ return 0;
}
static int s28hx_t_post_bfpt_fixup(struct spi_nor *nor,
--
2.34.1
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