This is required for non-parser drivers handling MTD devices.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
-@@ -3156,6 +3156,7 @@ int spi_nor_scan(struct spi_nor *nor, co
+@@ -3141,6 +3141,7 @@ int spi_nor_scan(struct spi_nor *nor, co
struct device *dev = nor->dev;
struct mtd_info *mtd = &nor->mtd;
struct device_node *np = spi_nor_get_flash_node(nor);
int ret;
int i;
-@@ -3210,7 +3211,12 @@ int spi_nor_scan(struct spi_nor *nor, co
+@@ -3195,7 +3196,12 @@ int spi_nor_scan(struct spi_nor *nor, co
if (ret)
return ret;
mtd->type = MTD_NORFLASH;
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
-@@ -778,6 +778,17 @@ out_error:
+@@ -788,6 +788,17 @@ out_error:
*/
static void mtd_set_dev_defaults(struct mtd_info *mtd)
{
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
-@@ -3110,6 +3110,7 @@ int spi_nor_scan(struct spi_nor *nor, co
+@@ -3095,6 +3095,7 @@ int spi_nor_scan(struct spi_nor *nor, co
struct device *dev = nor->dev;
struct mtd_info *mtd = &nor->mtd;
struct device_node *np = spi_nor_get_flash_node(nor);
int ret;
int i;
-@@ -3164,7 +3165,12 @@ int spi_nor_scan(struct spi_nor *nor, co
+@@ -3149,7 +3150,12 @@ int spi_nor_scan(struct spi_nor *nor, co
if (ret)
return ret;
mtd->type = MTD_NORFLASH;
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
-@@ -778,6 +778,17 @@ out_error:
+@@ -788,6 +788,17 @@ out_error:
*/
static void mtd_set_dev_defaults(struct mtd_info *mtd)
{
--- /dev/null
+From bcdf0315a61a29eb753a607d3a85a4032de72d94 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Tue, 10 May 2022 15:12:59 +0200
+Subject: [PATCH] mtd: call of_platform_populate() for MTD partitions
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Until this change MTD subsystem supported handling partitions only with
+MTD partitions parsers. That's a specific / limited API designed around
+partitions.
+
+Some MTD partitions may however require different handling. They may
+contain specific data that needs to be parsed and somehow extracted. For
+that purpose MTD subsystem should allow binding of standard platform
+drivers.
+
+An example can be U-Boot (sub)partition with environment variables.
+There exist a "u-boot,env" DT binding for MTD (sub)partition that
+requires an NVMEM driver.
+
+Ref: 5db1c2dbc04c ("dt-bindings: nvmem: add U-Boot environment variables binding")
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
+Link: https://lore.kernel.org/linux-mtd/20220510131259.555-1-zajec5@gmail.com
+---
+ drivers/mtd/mtdpart.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+--- a/drivers/mtd/mtdpart.c
++++ b/drivers/mtd/mtdpart.c
+@@ -17,6 +17,7 @@
+ #include <linux/mtd/partitions.h>
+ #include <linux/err.h>
+ #include <linux/of.h>
++#include <linux/of_platform.h>
+
+ #include "mtdcore.h"
+
+@@ -578,10 +579,16 @@ static int mtd_part_of_parse(struct mtd_
+ struct mtd_part_parser *parser;
+ struct device_node *np;
+ struct property *prop;
++ struct device *dev;
+ const char *compat;
+ const char *fixed = "fixed-partitions";
+ int ret, err = 0;
+
++ dev = &master->dev;
++ /* Use parent device (controller) if the top level MTD is not registered */
++ if (!IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER) && !mtd_is_partition(master))
++ dev = master->dev.parent;
++
+ np = mtd_get_of_node(master);
+ if (mtd_is_partition(master))
+ of_node_get(np);
+@@ -594,6 +601,7 @@ static int mtd_part_of_parse(struct mtd_
+ continue;
+ ret = mtd_part_do_parse(parser, master, pparts, NULL);
+ if (ret > 0) {
++ of_platform_populate(np, NULL, NULL, dev);
+ of_node_put(np);
+ return ret;
+ }
+@@ -601,6 +609,7 @@ static int mtd_part_of_parse(struct mtd_
+ if (ret < 0 && !err)
+ err = ret;
+ }
++ of_platform_populate(np, NULL, NULL, dev);
+ of_node_put(np);
+
+ /*
--- /dev/null
+From bcdf0315a61a29eb753a607d3a85a4032de72d94 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Tue, 10 May 2022 15:12:59 +0200
+Subject: [PATCH] mtd: call of_platform_populate() for MTD partitions
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Until this change MTD subsystem supported handling partitions only with
+MTD partitions parsers. That's a specific / limited API designed around
+partitions.
+
+Some MTD partitions may however require different handling. They may
+contain specific data that needs to be parsed and somehow extracted. For
+that purpose MTD subsystem should allow binding of standard platform
+drivers.
+
+An example can be U-Boot (sub)partition with environment variables.
+There exist a "u-boot,env" DT binding for MTD (sub)partition that
+requires an NVMEM driver.
+
+Ref: 5db1c2dbc04c ("dt-bindings: nvmem: add U-Boot environment variables binding")
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
+Link: https://lore.kernel.org/linux-mtd/20220510131259.555-1-zajec5@gmail.com
+---
+ drivers/mtd/mtdpart.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+--- a/drivers/mtd/mtdpart.c
++++ b/drivers/mtd/mtdpart.c
+@@ -17,6 +17,7 @@
+ #include <linux/mtd/partitions.h>
+ #include <linux/err.h>
+ #include <linux/of.h>
++#include <linux/of_platform.h>
+
+ #include "mtdcore.h"
+
+@@ -577,10 +578,16 @@ static int mtd_part_of_parse(struct mtd_
+ struct mtd_part_parser *parser;
+ struct device_node *np;
+ struct property *prop;
++ struct device *dev;
+ const char *compat;
+ const char *fixed = "fixed-partitions";
+ int ret, err = 0;
+
++ dev = &master->dev;
++ /* Use parent device (controller) if the top level MTD is not registered */
++ if (!IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER) && !mtd_is_partition(master))
++ dev = master->dev.parent;
++
+ np = mtd_get_of_node(master);
+ if (mtd_is_partition(master))
+ of_node_get(np);
+@@ -593,6 +600,7 @@ static int mtd_part_of_parse(struct mtd_
+ continue;
+ ret = mtd_part_do_parse(parser, master, pparts, NULL);
+ if (ret > 0) {
++ of_platform_populate(np, NULL, NULL, dev);
+ of_node_put(np);
+ return ret;
+ }
+@@ -600,6 +608,7 @@ static int mtd_part_of_parse(struct mtd_
+ if (ret < 0 && !err)
+ err = ret;
+ }
++ of_platform_populate(np, NULL, NULL, dev);
+ of_node_put(np);
+
+ /*
#include "mtdcore.h"
-@@ -851,6 +852,8 @@ int mtd_device_parse_register(struct mtd
+@@ -861,6 +862,8 @@ int mtd_device_parse_register(struct mtd
register_reboot_notifier(&mtd->reboot_notifier);
}
#include <linux/nvmem-provider.h>
#include <linux/mtd/mtd.h>
-@@ -694,6 +695,19 @@ int add_mtd_device(struct mtd_info *mtd)
+@@ -704,6 +705,19 @@ int add_mtd_device(struct mtd_info *mtd)
of this try_ nonsense, and no bitching about it
either. :) */
__module_get(THIS_MODULE);
depends on m
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
-@@ -15,10 +15,12 @@
+@@ -15,11 +15,13 @@
#include <linux/kmod.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
+#include <linux/magic.h>
#include <linux/err.h>
#include <linux/of.h>
+ #include <linux/of_platform.h>
#include "mtdcore.h"
+#include "mtdsplit/mtdsplit.h"
/*
* MTD methods which simply translate the effective address and pass through
-@@ -236,6 +238,146 @@ static int mtd_add_partition_attrs(struc
+@@ -237,6 +239,146 @@ static int mtd_add_partition_attrs(struc
return ret;
}
int mtd_add_partition(struct mtd_info *parent, const char *name,
long long offset, long long length)
{
-@@ -274,6 +416,7 @@ int mtd_add_partition(struct mtd_info *p
+@@ -275,6 +417,7 @@ int mtd_add_partition(struct mtd_info *p
if (ret)
goto err_remove_part;
mtd_add_partition_attrs(child);
return 0;
-@@ -422,6 +565,7 @@ int add_mtd_partitions(struct mtd_info *
+@@ -423,6 +566,7 @@ int add_mtd_partitions(struct mtd_info *
goto err_del_partitions;
}
mtd_add_partition_attrs(child);
/* Look for subpartitions */
-@@ -438,31 +582,6 @@ err_del_partitions:
+@@ -439,31 +583,6 @@ err_del_partitions:
return ret;
}
&dev_attr_oobsize.attr,
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
-@@ -40,6 +40,7 @@ static struct mtd_info *allocate_partiti
+@@ -41,6 +41,7 @@ static struct mtd_info *allocate_partiti
struct mtd_info *master = mtd_get_master(parent);
int wr_alignment = (parent->flags & MTD_NO_ERASE) ?
master->writesize : master->erasesize;
u64 parent_size = mtd_is_partition(parent) ?
parent->part.size : parent->size;
struct mtd_info *child;
-@@ -164,6 +165,7 @@ static struct mtd_info *allocate_partiti
+@@ -165,6 +166,7 @@ static struct mtd_info *allocate_partiti
} else {
/* Single erase size */
child->erasesize = master->erasesize;
}
/*
-@@ -171,26 +173,39 @@ static struct mtd_info *allocate_partiti
+@@ -172,26 +174,39 @@ static struct mtd_info *allocate_partiti
* exposes several regions with different erasesize. Adjust
* wr_alignment accordingly.
*/
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
-@@ -1046,6 +1046,44 @@ out_unlock:
+@@ -1056,6 +1056,44 @@ out_unlock:
}
EXPORT_SYMBOL_GPL(get_mtd_device_nm);
depends on m
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
-@@ -15,10 +15,12 @@
+@@ -15,11 +15,13 @@
#include <linux/kmod.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
+#include <linux/magic.h>
#include <linux/err.h>
#include <linux/of.h>
+ #include <linux/of_platform.h>
#include "mtdcore.h"
+#include "mtdsplit/mtdsplit.h"
/*
* MTD methods which simply translate the effective address and pass through
-@@ -235,6 +237,146 @@ static int mtd_add_partition_attrs(struc
+@@ -236,6 +238,146 @@ static int mtd_add_partition_attrs(struc
return ret;
}
int mtd_add_partition(struct mtd_info *parent, const char *name,
long long offset, long long length)
{
-@@ -273,6 +415,7 @@ int mtd_add_partition(struct mtd_info *p
+@@ -274,6 +416,7 @@ int mtd_add_partition(struct mtd_info *p
if (ret)
goto err_remove_part;
mtd_add_partition_attrs(child);
return 0;
-@@ -421,6 +564,7 @@ int add_mtd_partitions(struct mtd_info *
+@@ -422,6 +565,7 @@ int add_mtd_partitions(struct mtd_info *
goto err_del_partitions;
}
mtd_add_partition_attrs(child);
/* Look for subpartitions */
-@@ -437,31 +581,6 @@ err_del_partitions:
+@@ -438,31 +582,6 @@ err_del_partitions:
return ret;
}
&dev_attr_oobsize.attr,
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
-@@ -40,6 +40,7 @@ static struct mtd_info *allocate_partiti
+@@ -41,6 +41,7 @@ static struct mtd_info *allocate_partiti
struct mtd_info *master = mtd_get_master(parent);
int wr_alignment = (parent->flags & MTD_NO_ERASE) ?
master->writesize : master->erasesize;
u64 parent_size = mtd_is_partition(parent) ?
parent->part.size : parent->size;
struct mtd_info *child;
-@@ -164,6 +165,7 @@ static struct mtd_info *allocate_partiti
+@@ -165,6 +166,7 @@ static struct mtd_info *allocate_partiti
} else {
/* Single erase size */
child->erasesize = master->erasesize;
}
/*
-@@ -171,26 +173,39 @@ static struct mtd_info *allocate_partiti
+@@ -172,26 +174,39 @@ static struct mtd_info *allocate_partiti
* exposes several regions with different erasesize. Adjust
* wr_alignment accordingly.
*/
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
-@@ -3156,6 +3156,7 @@ int spi_nor_scan(struct spi_nor *nor, co
+@@ -3141,6 +3141,7 @@ int spi_nor_scan(struct spi_nor *nor, co
struct device *dev = nor->dev;
struct mtd_info *mtd = &nor->mtd;
struct device_node *np = spi_nor_get_flash_node(nor);
int ret;
int i;
-@@ -3210,7 +3211,12 @@ int spi_nor_scan(struct spi_nor *nor, co
+@@ -3195,7 +3196,12 @@ int spi_nor_scan(struct spi_nor *nor, co
if (ret)
return ret;
mtd->type = MTD_NORFLASH;
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
-@@ -778,6 +778,17 @@ out_error:
+@@ -788,6 +788,17 @@ out_error:
*/
static void mtd_set_dev_defaults(struct mtd_info *mtd)
{
projects / openwrt / staging / nbd.git / commitdiff