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ar71xx: ar934x_nfc: allow to control DMA data swap via platform data
Signed-off-by: Gabor Juhos <juhosg@openwrt.org> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34588 3c298f89-4303-0410-b956-a3cf2f4a3e73
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@ -80,6 +80,11 @@ void __init ath79_nfc_set_scan_fixup(int (*f)(struct mtd_info *mtd))
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ath79_nfc_data.scan_fixup = f;
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}
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void __init ath79_nfc_set_swap_dma(bool enable)
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{
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ath79_nfc_data.swap_dma = enable;
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}
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void __init ath79_nfc_set_parts(struct mtd_partition *parts, int nr_parts)
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{
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ath79_nfc_data.parts = parts;
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@ -11,16 +11,20 @@
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#ifndef _ATH79_DEV_NFC_H
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#define _ATH79_DEV_NFC_H
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struct mtd_partition;
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#ifdef CONFIG_ATH79_DEV_NFC
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void ath79_nfc_set_parts(struct mtd_partition *parts, int nr_parts);
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void ath79_nfc_set_select_chip(void (*f)(int chip_no));
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void ath79_nfc_set_scan_fixup(int (*f)(struct mtd_info *mtd));
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void ath79_nfc_set_swap_dma(bool enable);
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void ath79_register_nfc(void);
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#else
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static inline void ath79_nfc_set_parts(struct mtd_partition *parts,
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int nr_parts) {}
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static inline void ath79_nfc_set_select_chip(void (*f)(int chip_no)) {}
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static inline void ath79_nfc_set_scan_fixup(int (*f)(struct mtd_info *mtd)) {}
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static inline void ath79_nfc_set_swap_dma(bool enable) {}
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static inline void ath79_register_nfc(void) {}
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#endif
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@ -200,6 +200,7 @@ static void __init rb2011_nand_init(void)
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ath79_nfc_set_parts(rb2011_nand_partitions,
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ARRAY_SIZE(rb2011_nand_partitions));
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ath79_nfc_set_select_chip(rb2011_nand_select_chip);
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ath79_nfc_set_swap_dma(true);
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ath79_register_nfc();
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}
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@ -174,6 +174,7 @@ struct ar934x_nfc {
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struct device *parent;
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void __iomem *base;
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void (*select_chip)(int chip_no);
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bool swap_dma;
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int irq;
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wait_queue_head_t irq_waitq;
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@ -190,6 +191,8 @@ struct ar934x_nfc {
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unsigned int buf_size;
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int buf_index;
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bool read_id;
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int erase1_page_addr;
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int rndout_page_addr;
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@ -591,7 +594,10 @@ ar934x_nfc_read_status(struct ar934x_nfc *nfc)
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nfc_dbg(nfc, "read status, cmd:%08x status:%02x\n",
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cmd_reg, (status & 0xff));
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nfc->buf[0 ^ 3] = status;
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if (nfc->swap_dma)
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nfc->buf[0 ^ 3] = status;
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else
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nfc->buf[0] = status;
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}
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static void
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@ -600,6 +606,7 @@ ar934x_nfc_cmdfunc(struct mtd_info *mtd, unsigned int command, int column,
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{
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struct ar934x_nfc *nfc = mtd_to_ar934x_nfc(mtd);
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nfc->read_id = false;
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if (command != NAND_CMD_PAGEPROG)
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nfc->buf_index = 0;
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@ -609,6 +616,7 @@ ar934x_nfc_cmdfunc(struct mtd_info *mtd, unsigned int command, int column,
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break;
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case NAND_CMD_READID:
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nfc->read_id = true;
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ar934x_nfc_send_readid(nfc, command);
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break;
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@ -717,13 +725,15 @@ static u8
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ar934x_nfc_read_byte(struct mtd_info *mtd)
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{
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struct ar934x_nfc *nfc = mtd_to_ar934x_nfc(mtd);
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unsigned int buf_index;
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u8 data;
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WARN_ON(nfc->buf_index >= nfc->buf_size);
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buf_index = nfc->buf_index ^ 3;
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data = nfc->buf[buf_index];
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if (nfc->swap_dma || nfc->read_id)
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data = nfc->buf[nfc->buf_index ^ 3];
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else
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data = nfc->buf[nfc->buf_index];
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nfc->buf_index++;
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return data;
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@ -737,9 +747,16 @@ ar934x_nfc_write_buf(struct mtd_info *mtd, const u8 *buf, int len)
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WARN_ON(nfc->buf_index + len > nfc->buf_size);
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for (i = 0; i < len; i++) {
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nfc->buf[nfc->buf_index ^ 3] = buf[i];
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nfc->buf_index++;
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if (nfc->swap_dma) {
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for (i = 0; i < len; i++) {
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nfc->buf[nfc->buf_index ^ 3] = buf[i];
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nfc->buf_index++;
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}
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} else {
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for (i = 0; i < len; i++) {
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nfc->buf[nfc->buf_index] = buf[i];
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nfc->buf_index++;
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}
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}
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}
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@ -754,9 +771,16 @@ ar934x_nfc_read_buf(struct mtd_info *mtd, u8 *buf, int len)
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buf_index = nfc->buf_index;
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for (i = 0; i < len; i++) {
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buf[i] = nfc->buf[buf_index ^ 3];
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buf_index++;
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if (nfc->swap_dma || nfc->read_id) {
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for (i = 0; i < len; i++) {
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buf[i] = nfc->buf[buf_index ^ 3];
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buf_index++;
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}
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} else {
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for (i = 0; i < len; i++) {
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buf[i] = nfc->buf[buf_index];
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buf_index++;
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}
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}
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nfc->buf_index = buf_index;
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@ -1028,6 +1052,7 @@ ar934x_nfc_probe(struct platform_device *pdev)
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nfc->parent = &pdev->dev;
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nfc->select_chip = pdata->select_chip;
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nfc->swap_dma = pdata->swap_dma;
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nand = &nfc->nand_chip;
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mtd = &nfc->mtd;
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@ -22,6 +22,7 @@ struct ar934x_nfc_platform_data {
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struct mtd_partition *parts;
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int nr_parts;
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bool swap_dma;
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void (*hw_reset)(bool active);
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void (*select_chip)(int chip_no);
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int (*scan_fixup)(struct mtd_info *mtd);
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@ -1,6 +1,6 @@
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--- a/drivers/mtd/nand/ar934x_nfc.c
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+++ b/drivers/mtd/nand/ar934x_nfc.c
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@@ -762,6 +762,18 @@ ar934x_nfc_read_buf(struct mtd_info *mtd
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@@ -786,6 +786,18 @@ ar934x_nfc_read_buf(struct mtd_info *mtd
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nfc->buf_index = buf_index;
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}
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@ -19,7 +19,7 @@
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static void
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ar934x_nfc_hw_init(struct ar934x_nfc *nfc)
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{
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@@ -1047,6 +1059,7 @@ ar934x_nfc_probe(struct platform_device
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@@ -1072,6 +1084,7 @@ ar934x_nfc_probe(struct platform_device
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nand->read_byte = ar934x_nfc_read_byte;
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nand->write_buf = ar934x_nfc_write_buf;
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nand->read_buf = ar934x_nfc_read_buf;
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