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SPDX: Convert all of our single license tags to Linux Kernel style
[oweals/u-boot.git] / drivers / mtd / nand / omap_gpmc.c
diff --git a/drivers/mtd/nand/omap_gpmc.c b/drivers/mtd/nand/omap_gpmc.c
index 6a45d28a72d2d02e7d9ca68a372db1f967df7175..6a050501b04b85bb891800008fb32653cffbed85 100644 (file)
--- a/drivers/mtd/nand/omap_gpmc.c
+++ b/drivers/mtd/nand/omap_gpmc.c
@@ -1,13 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2004-2008 Texas Instruments, <www.ti.com>
  * Rohit Choraria <rohitkc@ti.com>
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <common.h>
 #include <asm/io.h>
-#include <asm/errno.h>
+#include <linux/errno.h>
 #include <asm/arch/mem.h>
 #include <linux/mtd/omap_gpmc.h>
 #include <linux/mtd/nand_ecc.h>
@@ -58,8 +57,8 @@ static struct omap_nand_info omap_nand_info[GPMC_MAX_CS];
 static void omap_nand_hwcontrol(struct mtd_info *mtd, int32_t cmd,
                                uint32_t ctrl)
 {
-       register struct nand_chip *this = mtd->priv;
-       struct omap_nand_info *info = this->priv;
+       register struct nand_chip *this = mtd_to_nand(mtd);
+       struct omap_nand_info *info = nand_get_controller_data(this);
        int cs = info->cs;
 
        /*
@@ -85,8 +84,8 @@ static void omap_nand_hwcontrol(struct mtd_info *mtd, int32_t cmd,
 /* Check wait pin as dev ready indicator */
 static int omap_dev_ready(struct mtd_info *mtd)
 {
-       register struct nand_chip *this = mtd->priv;
-       struct omap_nand_info *info = this->priv;
+       register struct nand_chip *this = mtd_to_nand(mtd);
+       struct omap_nand_info *info = nand_get_controller_data(this);
        return gpmc_cfg->status & (1 << (8 + info->ws));
 }
 
@@ -163,7 +162,7 @@ static int __maybe_unused omap_correct_data(struct mtd_info *mtd, uint8_t *dat,
                                return 0;
                        printf("Error: Bad compare! failed\n");
                        /* detected 2 bit error */
-                       return -1;
+                       return -EBADMSG;
                }
        }
        return 0;
@@ -177,8 +176,8 @@ static int __maybe_unused omap_correct_data(struct mtd_info *mtd, uint8_t *dat,
 __maybe_unused
 static void omap_enable_hwecc(struct mtd_info *mtd, int32_t mode)
 {
-       struct nand_chip        *nand   = mtd->priv;
-       struct omap_nand_info   *info   = nand->priv;
+       struct nand_chip        *nand   = mtd_to_nand(mtd);
+       struct omap_nand_info   *info   = nand_get_controller_data(nand);
        unsigned int dev_width = (nand->options & NAND_BUSWIDTH_16) ? 1 : 0;
        unsigned int ecc_algo = 0;
        unsigned int bch_type = 0;
@@ -262,9 +261,10 @@ static void omap_enable_hwecc(struct mtd_info *mtd, int32_t mode)
 static int omap_calculate_ecc(struct mtd_info *mtd, const uint8_t *dat,
                                uint8_t *ecc_code)
 {
-       struct nand_chip *chip = mtd->priv;
-       struct omap_nand_info *info = chip->priv;
-       uint32_t *ptr, val = 0;
+       struct nand_chip *chip = mtd_to_nand(mtd);
+       struct omap_nand_info *info = nand_get_controller_data(chip);
+       const uint32_t *ptr;
+       uint32_t val = 0;
        int8_t i = 0, j;
 
        switch (info->ecc_scheme) {
@@ -392,7 +392,7 @@ static int __read_prefetch_aligned(struct nand_chip *chip, uint32_t *buf, int le
 {
        int ret;
        uint32_t cnt;
-       struct omap_nand_info *info = chip->priv;
+       struct omap_nand_info *info = nand_get_controller_data(chip);
 
        ret = omap_prefetch_enable(PREFETCH_FIFOTHRESHOLD_MAX, len, 0, info->cs);
        if (ret < 0)
@@ -417,7 +417,7 @@ static int __read_prefetch_aligned(struct nand_chip *chip, uint32_t *buf, int le
 
 static inline void omap_nand_read(struct mtd_info *mtd, uint8_t *buf, int len)
 {
-       struct nand_chip *chip = mtd->priv;
+       struct nand_chip *chip = mtd_to_nand(mtd);
 
        if (chip->options & NAND_BUSWIDTH_16)
                nand_read_buf16(mtd, buf, len);
@@ -429,7 +429,7 @@ static void omap_nand_read_prefetch(struct mtd_info *mtd, uint8_t *buf, int len)
 {
        int ret;
        uint32_t head, tail;
-       struct nand_chip *chip = mtd->priv;
+       struct nand_chip *chip = mtd_to_nand(mtd);
 
        /*
         * If the destination buffer is unaligned, start with reading
@@ -491,8 +491,8 @@ static void omap_reverse_list(u8 *list, unsigned int length)
 static int omap_correct_data_bch(struct mtd_info *mtd, uint8_t *dat,
                                uint8_t *read_ecc, uint8_t *calc_ecc)
 {
-       struct nand_chip *chip = mtd->priv;
-       struct omap_nand_info *info = chip->priv;
+       struct nand_chip *chip = mtd_to_nand(mtd);
+       struct omap_nand_info *info = nand_get_controller_data(chip);
        struct nand_ecc_ctrl *ecc = &chip->ecc;
        uint32_t error_count = 0, error_max;
        uint32_t error_loc[ELM_MAX_ERROR_COUNT];
@@ -652,17 +652,17 @@ static int omap_correct_data_bch_sw(struct mtd_info *mtd, u_char *data,
        int i, count;
        /* cannot correct more than 8 errors */
        unsigned int errloc[8];
-       struct nand_chip *chip = mtd->priv;
-       struct omap_nand_info *info = chip->priv;
+       struct nand_chip *chip = mtd_to_nand(mtd);
+       struct omap_nand_info *info = nand_get_controller_data(chip);
 
-       count = decode_bch(info->control, NULL, 512, read_ecc, calc_ecc,
-                                                       NULL, errloc);
+       count = decode_bch(info->control, NULL, SECTOR_BYTES,
+                               read_ecc, calc_ecc, NULL, errloc);
        if (count > 0) {
                /* correct errors */
                for (i = 0; i < count; i++) {
                        /* correct data only, not ecc bytes */
-                       if (errloc[i] < 8*512)
-                               data[errloc[i]/8] ^= 1 << (errloc[i] & 7);
+                       if (errloc[i] < SECTOR_BYTES << 3)
+                               data[errloc[i] >> 3] ^= 1 << (errloc[i] & 7);
                        debug("corrected bitflip %u\n", errloc[i]);
 #ifdef DEBUG
                        puts("read_ecc: ");
@@ -691,8 +691,8 @@ static int omap_correct_data_bch_sw(struct mtd_info *mtd, u_char *data,
  */
 static void __maybe_unused omap_free_bch(struct mtd_info *mtd)
 {
-       struct nand_chip *chip = mtd->priv;
-       struct omap_nand_info *info = chip->priv;
+       struct nand_chip *chip = mtd_to_nand(mtd);
+       struct omap_nand_info *info = nand_get_controller_data(chip);
 
        if (info->control) {
                free_bch(info->control);
@@ -710,7 +710,7 @@ static void __maybe_unused omap_free_bch(struct mtd_info *mtd)
  */
 static int omap_select_ecc_scheme(struct nand_chip *nand,
        enum omap_ecc ecc_scheme, unsigned int pagesize, unsigned int oobsize) {
-       struct omap_nand_info   *info           = nand->priv;
+       struct omap_nand_info   *info           = nand_get_controller_data(nand);
        struct nand_ecclayout   *ecclayout      = &omap_ecclayout;
        int eccsteps = pagesize / SECTOR_BYTES;
        int i;
@@ -893,18 +893,15 @@ static int omap_select_ecc_scheme(struct nand_chip *nand,
 int __maybe_unused omap_nand_switch_ecc(uint32_t hardware, uint32_t eccstrength)
 {
        struct nand_chip *nand;
-       struct mtd_info *mtd;
+       struct mtd_info *mtd = get_nand_dev_by_index(nand_curr_device);
        int err = 0;
 
-       if (nand_curr_device < 0 ||
-           nand_curr_device >= CONFIG_SYS_MAX_NAND_DEVICE ||
-           !nand_info[nand_curr_device].name) {
+       if (!mtd) {
                printf("nand: error: no NAND devices found\n");
                return -ENODEV;
        }
 
-       mtd = &nand_info[nand_curr_device];
-       nand = mtd->priv;
+       nand = mtd_to_nand(mtd);
        nand->options |= NAND_OWN_BUFFERS;
        nand->options &= ~NAND_SUBPAGE_READ;
        /* Setup the ecc configurations again */
@@ -917,6 +914,10 @@ int __maybe_unused omap_nand_switch_ecc(uint32_t hardware, uint32_t eccstrength)
                        err = omap_select_ecc_scheme(nand,
                                        OMAP_ECC_BCH8_CODE_HW,
                                        mtd->writesize, mtd->oobsize);
+               } else if (eccstrength == 16) {
+                       err = omap_select_ecc_scheme(nand,
+                                       OMAP_ECC_BCH16_CODE_HW,
+                                       mtd->writesize, mtd->oobsize);
                } else {
                        printf("nand: error: unsupported ECC scheme\n");
                        return -EINVAL;
@@ -994,7 +995,7 @@ int board_nand_init(struct nand_chip *nand)
        omap_nand_info[cs].control = NULL;
        omap_nand_info[cs].cs = cs;
        omap_nand_info[cs].ws = wscfg[cs];
-       nand->priv      = &omap_nand_info[cs];
+       nand_set_controller_data(nand, &omap_nand_info[cs]);
        nand->cmd_ctrl  = omap_nand_hwcontrol;
        nand->options   |= NAND_NO_PADDING | NAND_CACHEPRG;
        nand->chip_delay = 100;
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