#include <asm/io.h>
#include <linux/bitops.h>
#include <linux/err.h>
-#include <linux/mtd/nand_bch.h>
#include <linux/mtd/nand_ecc.h>
#include <linux/mtd/fsmc_nand.h>
#include <asm/arch/hardware.h>
static void fsmc_nand_hwcontrol(struct mtd_info *mtd, int cmd, uint ctrl)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *this = mtd_to_nand(mtd);
ulong IO_ADDR_W;
if (ctrl & NAND_CTRL_CHANGE) {
* @eccstrength - the number of bits that could be corrected
* (1 - HW, 4 - SW BCH4)
*/
-int __maybe_unused fsmc_nand_switch_ecc(uint32_t eccstrength)
+int fsmc_nand_switch_ecc(uint32_t eccstrength)
{
struct nand_chip *nand;
struct mtd_info *mtd;
int err;
- mtd = &nand_info[nand_curr_device];
- nand = mtd->priv;
+ /*
+ * This functions is only called on SPEAr600 platforms, supporting
+ * 1 bit HW ECC. The BCH8 HW ECC (FSMC_VER8) from the ST-Ericsson
+ * Nomadik SoC is currently supporting this fsmc_nand_switch_ecc()
+ * function, as it doesn't need to switch to a different ECC layout.
+ */
+ mtd = nand_info[nand_curr_device];
+ nand = mtd_to_nand(mtd);
/* Setup the ecc configurations again */
if (eccstrength == 1) {
nand->ecc.bytes = 3;
nand->ecc.strength = 1;
nand->ecc.layout = &fsmc_ecc1_layout;
+ nand->ecc.calculate = fsmc_read_hwecc;
nand->ecc.correct = nand_correct_data;
- } else {
+ } else if (eccstrength == 4) {
+ /*
+ * .calculate .correct and .bytes will be set in
+ * nand_scan_tail()
+ */
nand->ecc.mode = NAND_ECC_SOFT_BCH;
- nand->ecc.calculate = nand_bch_calculate_ecc;
- nand->ecc.correct = nand_bch_correct_data;
- nand->ecc.bytes = 7;
nand->ecc.strength = 4;
nand->ecc.layout = NULL;
+ } else {
+ printf("Error: ECC strength %d not supported!\n", eccstrength);
}
/* Update NAND handling after ECC mode switch */
{
static int chip_nr;
struct mtd_info *mtd;
- int i;
u32 peripid2 = readl(&fsmc_regs_p->peripid2);
fsmc_version = (peripid2 >> FSMC_REVISION_SHFT) &
(void __iomem *)CONFIG_SYS_NAND_BASE;
nand->badblockbits = 7;
- mtd = &nand_info[chip_nr++];
- mtd->priv = nand;
+ mtd = nand_to_mtd(nand);
switch (fsmc_version) {
case FSMC_VER8:
if (nand_scan_tail(mtd))
return -ENXIO;
- for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++)
- if (nand_register(i))
- return -ENXIO;
+ if (nand_register(chip_nr++, mtd))
+ return -ENXIO;
return 0;
}