mtd: nand: raw: convert nand_dt_init() to ofnode_xx() interface

nand_dt_init() is still using fdtdec_xx() interface.
If OF_LIVE flag is enabled, dt property can't be get anymore.
Updating all fdtdec_xx() interface to ofnode_xx() to solve this issue.

For doing this, node parameter type must be ofnode.

First idea was to convert "node" parameter to ofnode type inside
nand_dt_init() using offset_to_ofnode(node). But offset_to_ofnode()
is not bijective, in case OF_LIVE flag is enabled, it performs an assert().

So, this leads to update nand_chip struct flash_node field from int to
ofnode and to update all nand_dt_init() callers.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>

diff --git a/drivers/mtd/nand/raw/denali.c b/drivers/mtd/nand/raw/denali.c
index ab91db8..c827f80 100644 (file)
--- a/drivers/mtd/nand/raw/denali.c
+++ b/drivers/mtd/nand/raw/denali.c
@@ -1246,7 +1246,7 @@ int denali_init(struct denali_nand_info *denali)
 
        denali->active_bank = DENALI_INVALID_BANK;
 
-       chip->flash_node = dev_of_offset(denali->dev);
+       chip->flash_node = dev_ofnode(denali->dev);
        /* Fallback to the default name if DT did not give "label" property */
        if (!mtd->name)
                mtd->name = "denali-nand";

diff --git a/drivers/mtd/nand/raw/mxs_nand.c b/drivers/mtd/nand/raw/mxs_nand.c
index e6bbfac..748056a 100644 (file)
--- a/drivers/mtd/nand/raw/mxs_nand.c
+++ b/drivers/mtd/nand/raw/mxs_nand.c
@@ -1379,7 +1379,7 @@ int mxs_nand_init_ctrl(struct mxs_nand_info *nand_info)
        nand->options |= NAND_NO_SUBPAGE_WRITE;
 
        if (nand_info->dev)
-               nand->flash_node = dev_of_offset(nand_info->dev);
+               nand->flash_node = dev_ofnode(nand_info->dev);
 
        nand->cmd_ctrl          = mxs_nand_cmd_ctrl;
 

diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
index 3679ee7..b1fd779 100644 (file)
--- a/drivers/mtd/nand/raw/nand_base.c
+++ b/drivers/mtd/nand/raw/nand_base.c
@@ -29,9 +29,6 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 #include <common.h>
-#if CONFIG_IS_ENABLED(OF_CONTROL)
-#include <fdtdec.h>
-#endif
 #include <log.h>
 #include <malloc.h>
 #include <watchdog.h>
@@ -4576,23 +4573,20 @@ ident_done:
 EXPORT_SYMBOL(nand_get_flash_type);
 
 #if CONFIG_IS_ENABLED(OF_CONTROL)
-#include <asm/global_data.h>
-DECLARE_GLOBAL_DATA_PTR;
 
-static int nand_dt_init(struct mtd_info *mtd, struct nand_chip *chip, int node)
+static int nand_dt_init(struct mtd_info *mtd, struct nand_chip *chip, ofnode node)
 {
        int ret, ecc_mode = -1, ecc_strength, ecc_step;
-       const void *blob = gd->fdt_blob;
        const char *str;
 
-       ret = fdtdec_get_int(blob, node, "nand-bus-width", -1);
+       ret = ofnode_read_s32_default(node, "nand-bus-width", -1);
        if (ret == 16)
                chip->options |= NAND_BUSWIDTH_16;
 
-       if (fdtdec_get_bool(blob, node, "nand-on-flash-bbt"))
+       if (ofnode_read_bool(node, "nand-on-flash-bbt"))
                chip->bbt_options |= NAND_BBT_USE_FLASH;
 
-       str = fdt_getprop(blob, node, "nand-ecc-mode", NULL);
+       str = ofnode_read_string(node, "nand-ecc-mode");
        if (str) {
                if (!strcmp(str, "none"))
                        ecc_mode = NAND_ECC_NONE;
@@ -4608,9 +4602,10 @@ static int nand_dt_init(struct mtd_info *mtd, struct nand_chip *chip, int node)
                        ecc_mode = NAND_ECC_SOFT_BCH;
        }
 
-
-       ecc_strength = fdtdec_get_int(blob, node, "nand-ecc-strength", -1);
-       ecc_step = fdtdec_get_int(blob, node, "nand-ecc-step-size", -1);
+       ecc_strength = ofnode_read_s32_default(node,
+                                              "nand-ecc-strength", -1);
+       ecc_step = ofnode_read_s32_default(node,
+                                          "nand-ecc-step-size", -1);
 
        if ((ecc_step >= 0 && !(ecc_strength >= 0)) ||
            (!(ecc_step >= 0) && ecc_strength >= 0)) {
@@ -4627,13 +4622,13 @@ static int nand_dt_init(struct mtd_info *mtd, struct nand_chip *chip, int node)
        if (ecc_step > 0)
                chip->ecc.size = ecc_step;
 
-       if (fdt_getprop(blob, node, "nand-ecc-maximize", NULL))
+       if (ofnode_read_bool(node, "nand-ecc-maximize"))
                chip->ecc.options |= NAND_ECC_MAXIMIZE;
 
        return 0;
 }
 #else
-static int nand_dt_init(struct mtd_info *mtd, struct nand_chip *chip, int node)
+static int nand_dt_init(struct mtd_info *mtd, struct nand_chip *chip, ofnode node)
 {
        return 0;
 }
@@ -4657,7 +4652,7 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips,
        struct nand_flash_dev *type;
        int ret;
 
-       if (chip->flash_node) {
+       if (ofnode_valid(chip->flash_node)) {
                ret = nand_dt_init(mtd, chip, chip->flash_node);
                if (ret)
                        return ret;

diff --git a/drivers/mtd/nand/raw/stm32_fmc2_nand.c b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
index fd81a95..e17f1f8 100644 (file)
--- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c
+++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
@@ -823,7 +823,7 @@ static int stm32_fmc2_nfc_parse_child(struct stm32_fmc2_nfc *nfc, ofnode node)
                nand->cs_used[i] = cs[i];
        }
 
-       nand->chip.flash_node = ofnode_to_offset(node);
+       nand->chip.flash_node = node;
 
        return 0;
 }

diff --git a/drivers/mtd/nand/raw/sunxi_nand.c b/drivers/mtd/nand/raw/sunxi_nand.c
index 7bc6ec7..c378f08 100644 (file)
--- a/drivers/mtd/nand/raw/sunxi_nand.c
+++ b/drivers/mtd/nand/raw/sunxi_nand.c
@@ -1711,7 +1711,7 @@ static int sunxi_nand_chip_init(int node, struct sunxi_nfc *nfc, int devnum)
         * in the DT.
         */
        nand->ecc.mode = NAND_ECC_HW;
-       nand->flash_node = node;
+       nand->flash_node = offset_to_ofnode(node);
        nand->select_chip = sunxi_nfc_select_chip;
        nand->cmd_ctrl = sunxi_nfc_cmd_ctrl;
        nand->read_buf = sunxi_nfc_read_buf;

diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
index 66febc6..2fba9dc 100644 (file)
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -891,7 +891,7 @@ struct nand_chip {
        void __iomem *IO_ADDR_R;
        void __iomem *IO_ADDR_W;
 
-       int flash_node;
+       ofnode flash_node;
 
        uint8_t (*read_byte)(struct mtd_info *mtd);
        u16 (*read_word)(struct mtd_info *mtd);
@@ -973,12 +973,12 @@ struct nand_chip {
 static inline void nand_set_flash_node(struct nand_chip *chip,
                                       ofnode node)
 {
-       chip->flash_node = ofnode_to_offset(node);
+       chip->flash_node = node;
 }
 
 static inline ofnode nand_get_flash_node(struct nand_chip *chip)
 {
-       return offset_to_ofnode(chip->flash_node);
+       return chip->flash_node;
 }
 
 static inline struct nand_chip *mtd_to_nand(struct mtd_info *mtd)