mirror of
https://github.com/brain-hackers/u-boot-brain
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
65 lines
1.5 KiB
C
65 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2010-2017 CS Systemes d'Information
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* Florent Trinh Thai <florent.trinh-thai@c-s.fr>
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* Christophe Leroy <christophe.leroy@c-s.fr>
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*/
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#include <config.h>
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#include <common.h>
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#include <nand.h>
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#include <asm/io.h>
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#define BIT_CLE ((unsigned short)0x0800)
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#define BIT_ALE ((unsigned short)0x0400)
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#define BIT_NCE ((unsigned short)0x1000)
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static void nand_hwcontrol(struct mtd_info *mtdinfo, int cmd, unsigned int ctrl)
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{
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struct nand_chip *this = mtd_to_nand(mtdinfo);
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immap_t __iomem *immr = (immap_t __iomem *)CONFIG_SYS_IMMR;
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unsigned short pddat = 0;
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/* The hardware control change */
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if (ctrl & NAND_CTRL_CHANGE) {
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pddat = in_be16(&immr->im_ioport.iop_pddat);
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/* Clearing ALE and CLE */
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pddat &= ~(BIT_CLE | BIT_ALE);
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/* Driving NCE pin */
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if (ctrl & NAND_NCE)
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pddat &= ~BIT_NCE;
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else
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pddat |= BIT_NCE;
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/* Driving CLE and ALE pin */
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if (ctrl & NAND_CLE)
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pddat |= BIT_CLE;
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if (ctrl & NAND_ALE)
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pddat |= BIT_ALE;
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out_be16(&immr->im_ioport.iop_pddat, pddat);
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}
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/* Writing the command */
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if (cmd != NAND_CMD_NONE)
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out_8(this->IO_ADDR_W, cmd);
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}
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int board_nand_init(struct nand_chip *nand)
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{
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immap_t __iomem *immr = (immap_t __iomem *)CONFIG_SYS_IMMR;
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/* Set GPIO Port */
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setbits_be16(&immr->im_ioport.iop_pddir, 0x1c00);
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clrbits_be16(&immr->im_ioport.iop_pdpar, 0x1c00);
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clrsetbits_be16(&immr->im_ioport.iop_pddat, 0x0c00, 0x1000);
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nand->chip_delay = 60;
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nand->ecc.mode = NAND_ECC_SOFT;
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nand->cmd_ctrl = nand_hwcontrol;
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return 0;
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}
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