mtd: nand: Move arasan nand driver to driver model

Make changes to arasan nand driver to move it to driver model.
Select DM_MTD if arasan nand driver is selected.

Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

diff --git a/drivers/mtd/nand/raw/Kconfig b/drivers/mtd/nand/raw/Kconfig
index 16165f883902b3aff262073ce016755b689c9248..ec17653f4149732956853000ed103116fb4aa7dc 100644 (file)
--- a/drivers/mtd/nand/raw/Kconfig
+++ b/drivers/mtd/nand/raw/Kconfig
@@ -236,6 +236,7 @@ endif
 config NAND_ARASAN
        bool "Configure Arasan Nand"
        select SYS_NAND_SELF_INIT
+       select DM_MTD
        imply CMD_NAND
        help
          This enables Nand driver support for Arasan nand flash

diff --git a/drivers/mtd/nand/raw/arasan_nfc.c b/drivers/mtd/nand/raw/arasan_nfc.c
index 2cd3f64dc63c9c7cfcf0e6b4afa07bb5080a8e27..c2f7b3a42ee2ca96430a3099ea4dbb1bf032ec2c 100644 (file)
--- a/drivers/mtd/nand/raw/arasan_nfc.c
+++ b/drivers/mtd/nand/raw/arasan_nfc.c
@@ -15,14 +15,19 @@
 #include <linux/mtd/nand_ecc.h>
 #include <asm/arch/hardware.h>
 #include <asm/arch/sys_proto.h>
+#include <dm.h>
 #include <nand.h>
 
-struct arasan_nand_info {
-       void __iomem *nand_base;
+struct nand_config {
        u32 page;
        bool on_die_ecc_enabled;
 };
 
+struct arasan_nand_info {
+       struct udevice *dev;
+       struct nand_chip nand_chip;
+};
+
 struct nand_regs {
        u32 pkt_reg;
        u32 memadr_reg1;
@@ -259,8 +264,6 @@ static u32 buf_index;
 
 static struct nand_ecclayout nand_oob;
 
-static struct nand_chip nand_chip[CONFIG_SYS_MAX_NAND_DEVICE];
-
 static void arasan_nand_select_chip(struct mtd_info *mtd, int chip)
 {
        u32 reg_val;
@@ -323,7 +326,7 @@ static u8 arasan_nand_get_addrcycle(struct mtd_info *mtd)
 static int arasan_nand_read_page(struct mtd_info *mtd, u8 *buf, u32 size)
 {
        struct nand_chip *chip = mtd_to_nand(mtd);
-       struct arasan_nand_info *nand = nand_get_controller_data(chip);
+       struct nand_config *nand = nand_get_controller_data(chip);
        u32 reg_val, i, pktsize, pktnum;
        u32 *bufptr = (u32 *)buf;
        u32 timeout;
@@ -505,7 +508,7 @@ static int arasan_nand_write_page_hwecc(struct mtd_info *mtd,
        u32 size = mtd->writesize;
        u32 rdcount = 0;
        u8 column_addr_cycles;
-       struct arasan_nand_info *nand = nand_get_controller_data(chip);
+       struct nand_config *nand = nand_get_controller_data(chip);
 
        if (chip->ecc_step_ds >= ARASAN_NAND_PKTSIZE_1K)
                pktsize = ARASAN_NAND_PKTSIZE_1K;
@@ -1033,7 +1036,7 @@ static void arasan_nand_cmd_function(struct mtd_info *mtd, unsigned int command,
 {
        u32 i, ret = 0;
        struct nand_chip *chip = mtd_to_nand(mtd);
-       struct arasan_nand_info *nand = nand_get_controller_data(chip);
+       struct nand_config *nand = nand_get_controller_data(chip);
 
        curr_cmd = NULL;
        writel(ARASAN_NAND_INT_STS_XFR_CMPLT_MASK,
@@ -1088,7 +1091,7 @@ static void arasan_nand_cmd_function(struct mtd_info *mtd, unsigned int command,
 static void arasan_check_ondie(struct mtd_info *mtd)
 {
        struct nand_chip *nand_chip = mtd_to_nand(mtd);
-       struct arasan_nand_info *nand = nand_get_controller_data(nand_chip);
+       struct nand_config *nand = nand_get_controller_data(nand_chip);
        u8 maf_id, dev_id;
        u8 get_feature[4];
        u8 set_feature[4] = {ENABLE_ONDIE_ECC, 0x00, 0x00, 0x00};
@@ -1184,19 +1187,20 @@ static int arasan_nand_ecc_init(struct mtd_info *mtd)
        return 0;
 }
 
-static int arasan_nand_init(struct nand_chip *nand_chip, int devnum)
+static int arasan_probe(struct udevice *dev)
 {
-       struct arasan_nand_info *nand;
+       struct arasan_nand_info *arasan = dev_get_priv(dev);
+       struct nand_chip *nand_chip = &arasan->nand_chip;
+       struct nand_config *nand;
        struct mtd_info *mtd;
        int err = -1;
 
-       nand = calloc(1, sizeof(struct arasan_nand_info));
+       nand = calloc(1, sizeof(struct nand_config));
        if (!nand) {
                printf("%s: failed to allocate\n", __func__);
                return err;
        }
 
-       nand->nand_base = arasan_nand_base;
        mtd = nand_to_mtd(nand_chip);
        nand_set_controller_data(nand_chip, nand);
 
@@ -1253,7 +1257,7 @@ static int arasan_nand_init(struct nand_chip *nand_chip, int devnum)
                goto fail;
        }
 
-       if (nand_register(devnum, mtd)) {
+       if (nand_register(0, mtd)) {
                printf("Nand Register Fail\n");
                goto fail;
        }
@@ -1264,10 +1268,26 @@ fail:
        return err;
 }
 
+static const struct udevice_id arasan_nand_dt_ids[] = {
+       {.compatible = "arasan,nfc-v3p10",},
+       { /* sentinel */ }
+};
+
+U_BOOT_DRIVER(arasan_nand) = {
+       .name = "arasan-nand",
+       .id = UCLASS_MTD,
+       .of_match = arasan_nand_dt_ids,
+       .probe = arasan_probe,
+       .priv_auto_alloc_size = sizeof(struct arasan_nand_info),
+};
+
 void board_nand_init(void)
 {
-       struct nand_chip *nand = &nand_chip[0];
+       struct udevice *dev;
+       int ret;
 
-       if (arasan_nand_init(nand, 0))
-               puts("NAND init failed\n");
+       ret = uclass_get_device_by_driver(UCLASS_MTD,
+                                         DM_GET_DRIVER(arasan_nand), &dev);
+       if (ret && ret != -ENODEV)
+               pr_err("Failed to initialize %s. (error %d)\n", dev->name, ret);
 }