#ifndef _ATH79_DEV_NFC_H
#define _ATH79_DEV_NFC_H
+struct mtd_partition;
+
#ifdef CONFIG_ATH79_DEV_NFC
void ath79_nfc_set_parts(struct mtd_partition *parts, int nr_parts);
void ath79_nfc_set_select_chip(void (*f)(int chip_no));
void ath79_nfc_set_scan_fixup(int (*f)(struct mtd_info *mtd));
+void ath79_nfc_set_swap_dma(bool enable);
void ath79_register_nfc(void);
#else
static inline void ath79_nfc_set_parts(struct mtd_partition *parts,
int nr_parts) {}
static inline void ath79_nfc_set_select_chip(void (*f)(int chip_no)) {}
static inline void ath79_nfc_set_scan_fixup(int (*f)(struct mtd_info *mtd)) {}
+static inline void ath79_nfc_set_swap_dma(bool enable) {}
static inline void ath79_register_nfc(void) {}
#endif
struct device *parent;
void __iomem *base;
void (*select_chip)(int chip_no);
+ bool swap_dma;
int irq;
wait_queue_head_t irq_waitq;
unsigned int buf_size;
int buf_index;
+ bool read_id;
+
int erase1_page_addr;
int rndout_page_addr;
nfc_dbg(nfc, "read status, cmd:%08x status:%02x\n",
cmd_reg, (status & 0xff));
- nfc->buf[0 ^ 3] = status;
+ if (nfc->swap_dma)
+ nfc->buf[0 ^ 3] = status;
+ else
+ nfc->buf[0] = status;
}
static void
{
struct ar934x_nfc *nfc = mtd_to_ar934x_nfc(mtd);
+ nfc->read_id = false;
if (command != NAND_CMD_PAGEPROG)
nfc->buf_index = 0;
break;
case NAND_CMD_READID:
+ nfc->read_id = true;
ar934x_nfc_send_readid(nfc, command);
break;
ar934x_nfc_read_byte(struct mtd_info *mtd)
{
struct ar934x_nfc *nfc = mtd_to_ar934x_nfc(mtd);
- unsigned int buf_index;
u8 data;
WARN_ON(nfc->buf_index >= nfc->buf_size);
- buf_index = nfc->buf_index ^ 3;
- data = nfc->buf[buf_index];
+ if (nfc->swap_dma || nfc->read_id)
+ data = nfc->buf[nfc->buf_index ^ 3];
+ else
+ data = nfc->buf[nfc->buf_index];
+
nfc->buf_index++;
return data;
WARN_ON(nfc->buf_index + len > nfc->buf_size);
- for (i = 0; i < len; i++) {
- nfc->buf[nfc->buf_index ^ 3] = buf[i];
- nfc->buf_index++;
+ if (nfc->swap_dma) {
+ for (i = 0; i < len; i++) {
+ nfc->buf[nfc->buf_index ^ 3] = buf[i];
+ nfc->buf_index++;
+ }
+ } else {
+ for (i = 0; i < len; i++) {
+ nfc->buf[nfc->buf_index] = buf[i];
+ nfc->buf_index++;
+ }
}
}
buf_index = nfc->buf_index;
- for (i = 0; i < len; i++) {
- buf[i] = nfc->buf[buf_index ^ 3];
- buf_index++;
+ if (nfc->swap_dma || nfc->read_id) {
+ for (i = 0; i < len; i++) {
+ buf[i] = nfc->buf[buf_index ^ 3];
+ buf_index++;
+ }
+ } else {
+ for (i = 0; i < len; i++) {
+ buf[i] = nfc->buf[buf_index];
+ buf_index++;
+ }
}
nfc->buf_index = buf_index;
nfc->parent = &pdev->dev;
nfc->select_chip = pdata->select_chip;
+ nfc->swap_dma = pdata->swap_dma;
nand = &nfc->nand_chip;
mtd = &nfc->mtd;
--- a/drivers/mtd/nand/ar934x_nfc.c
+++ b/drivers/mtd/nand/ar934x_nfc.c
-@@ -762,6 +762,18 @@ ar934x_nfc_read_buf(struct mtd_info *mtd
+@@ -786,6 +786,18 @@ ar934x_nfc_read_buf(struct mtd_info *mtd
nfc->buf_index = buf_index;
}
static void
ar934x_nfc_hw_init(struct ar934x_nfc *nfc)
{
-@@ -1047,6 +1059,7 @@ ar934x_nfc_probe(struct platform_device
+@@ -1072,6 +1084,7 @@ ar934x_nfc_probe(struct platform_device
nand->read_byte = ar934x_nfc_read_byte;
nand->write_buf = ar934x_nfc_write_buf;
nand->read_buf = ar934x_nfc_read_buf;