54 /* Addresses for NFC MAIN RAM BUFFER areas */
76 /* NFC ECC mode define */
200 	struct vf610_nfc *nfc = mtd_to_nfc(mtd);  in vf610_nfc_read()  local
202 	return readl(nfc->regs + reg);  in vf610_nfc_read()
207 	struct vf610_nfc *nfc = mtd_to_nfc(mtd);  in vf610_nfc_write()  local
209 	writel(val, nfc->regs + reg);  in vf610_nfc_write()
254 	struct vf610_nfc *nfc = mtd_to_nfc(mtd);  in vf610_nfc_done()  local
274 	vf610_nfc_clear_status(nfc->regs);  in vf610_nfc_done()
329 		struct vf610_nfc *nfc = mtd_to_nfc(mtd);  in vf610_nfc_addr_cycle()  local
330 		if (nfc->chip.options & NAND_BUSWIDTH_16)  in vf610_nfc_addr_cycle()
356 	struct vf610_nfc *nfc = mtd_to_nfc(mtd);  in vf610_nfc_command()  local
357 	int trfr_sz = nfc->chip.options & NAND_BUSWIDTH_16 ? 1 : 0;  in vf610_nfc_command()
359 	nfc->buf_offset = max(column, 0);  in vf610_nfc_command()
360 	nfc->alt_buf = ALT_BUF_DATA;  in vf610_nfc_command()
366 		nfc->buf_offset = 0;  in vf610_nfc_command()
374 		trfr_sz += nfc->write_sz;  in vf610_nfc_command()
376 		vf610_nfc_transfer_size(nfc->regs, trfr_sz);  in vf610_nfc_command()
377 		vf610_nfc_send_commands(nfc->regs, NAND_CMD_SEQIN,  in vf610_nfc_command()
382 		vf610_nfc_transfer_size(nfc->regs, 0);  in vf610_nfc_command()
383 		vf610_nfc_send_command(nfc->regs, command, RESET_CMD_CODE);  in vf610_nfc_command()
389 		vf610_nfc_transfer_size(nfc->regs, trfr_sz);  in vf610_nfc_command()
390 		vf610_nfc_send_commands(nfc->regs, NAND_CMD_READ0,  in vf610_nfc_command()
398 		vf610_nfc_transfer_size(nfc->regs, trfr_sz);  in vf610_nfc_command()
400 		vf610_nfc_send_commands(nfc->regs, NAND_CMD_READ0,  in vf610_nfc_command()
406 		nfc->alt_buf = ALT_BUF_ONFI;  in vf610_nfc_command()
408 		vf610_nfc_transfer_size(nfc->regs, trfr_sz);  in vf610_nfc_command()
409 		vf610_nfc_send_command(nfc->regs, NAND_CMD_PARAM,  in vf610_nfc_command()
417 		vf610_nfc_transfer_size(nfc->regs, 0);  in vf610_nfc_command()
418 		vf610_nfc_send_commands(nfc->regs, command,  in vf610_nfc_command()
424 		nfc->alt_buf = ALT_BUF_ID;  in vf610_nfc_command()
425 		nfc->buf_offset = 0;  in vf610_nfc_command()
426 		vf610_nfc_transfer_size(nfc->regs, 0);  in vf610_nfc_command()
427 		vf610_nfc_send_command(nfc->regs, command, READ_ID_CMD_CODE);  in vf610_nfc_command()
433 		nfc->alt_buf = ALT_BUF_STAT;  in vf610_nfc_command()
434 		vf610_nfc_transfer_size(nfc->regs, 0);  in vf610_nfc_command()
435 		vf610_nfc_send_command(nfc->regs, command, STATUS_READ_CMD_CODE);  in vf610_nfc_command()
443 	nfc->write_sz = 0;  in vf610_nfc_command()
446 /* Read data from NFC buffers */
449 	struct vf610_nfc *nfc = mtd_to_nfc(mtd);  in vf610_nfc_read_buf()  local
450 	uint c = nfc->buf_offset;  in vf610_nfc_read_buf()
453 	if (nfc->alt_buf)  in vf610_nfc_read_buf()
456 	vf610_nfc_memcpy(buf, nfc->regs + NFC_MAIN_AREA(0) + c, len);  in vf610_nfc_read_buf()
458 	nfc->buf_offset += len;  in vf610_nfc_read_buf()
461 /* Write data to NFC buffers */
465 	struct vf610_nfc *nfc = mtd_to_nfc(mtd);  in vf610_nfc_write_buf()  local
466 	uint c = nfc->buf_offset;  in vf610_nfc_write_buf()
470 	vf610_nfc_memcpy(nfc->regs + NFC_MAIN_AREA(0) + c, buf, l);  in vf610_nfc_write_buf()
472 	nfc->write_sz += l;  in vf610_nfc_write_buf()
473 	nfc->buf_offset += l;  in vf610_nfc_write_buf()
476 /* Read byte from NFC buffers */
479 	struct vf610_nfc *nfc = mtd_to_nfc(mtd);  in vf610_nfc_read_byte()  local
481 	uint c = nfc->buf_offset;  in vf610_nfc_read_byte()
483 	switch (nfc->alt_buf) {  in vf610_nfc_read_byte()
493 		c = nfc->buf_offset ^ 0x3;  in vf610_nfc_read_byte()
497 		tmp = *((u8 *)(nfc->regs + NFC_MAIN_AREA(0) + c));  in vf610_nfc_read_byte()
500 	nfc->buf_offset++;  in vf610_nfc_read_byte()
504 /* Read word from NFC buffers */
516 	/* NFC handles R/B internally; always ready.  */  in vf610_nfc_dev_ready()
556 	struct vf610_nfc *nfc = mtd_to_nfc(mtd);  in vf610_nfc_correct_data()  local
561 	int flips_threshold = nfc->chip.ecc.strength / 2;  in vf610_nfc_correct_data()
577 	flips = count_written_bits(dat, nfc->chip.ecc.size, flips_threshold);  in vf610_nfc_correct_data()
584 	memset(dat, 0xff, nfc->chip.ecc.size);  in vf610_nfc_correct_data()
616 	struct vf610_nfc *nfc = mtd_to_nfc(mtd);  in vf610_nfc_write_page()  local
623 	nfc->write_sz = mtd->writesize + mtd->oobsize;  in vf610_nfc_write_page()
638 	struct vf610_nfc *nfc;  in vf610_nfc_nand_init()  local
650 	nfc = calloc(1, sizeof(*nfc));  in vf610_nfc_nand_init()
651 	if (!nfc) {  in vf610_nfc_nand_init()
656 	chip = &nfc->chip;  in vf610_nfc_nand_init()
657 	nfc->regs = addr;  in vf610_nfc_nand_init()
660 	nand_set_controller_data(chip, nfc);  in vf610_nfc_nand_init()
705 		dev_err(nfc->dev, "Unsupported flash page size\n");  in vf610_nfc_nand_init()
712 			dev_err(nfc->dev, "Unsupported flash with hwecc\n");  in vf610_nfc_nand_init()
718 			dev_err(nfc->dev, "ecc size: %d\n", chip->ecc.size);  in vf610_nfc_nand_init()
719 			dev_err(nfc->dev, "Step size needs to be page size\n");  in vf610_nfc_nand_init()
772 		.compatible = "fsl,vf610-nfc",
791 	.name = "vf610-nfc-dt",