diff options
author | Boris Brezillon <boris.brezillon@bootlin.com> | 2018-02-06 01:02:04 +0300 |
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committer | Boris Brezillon <boris.brezillon@bootlin.com> | 2018-02-16 12:09:34 +0300 |
commit | 93db446a424cee9387b532995e6b516667079555 (patch) | |
tree | 39c7900ae38d890fb971ea5fc6f194f7e66fa797 /drivers/mtd/nand/raw/brcmnand/brcmnand.h | |
parent | 7b6afee7291802aa8c02aa918782033992caf641 (diff) | |
download | linux-93db446a424cee9387b532995e6b516667079555.tar.xz |
mtd: nand: move raw NAND related code to the raw/ subdir
As part of the process of sharing more code between different NAND
based devices, we need to move all raw NAND related code to the raw/
subdirectory.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Diffstat (limited to 'drivers/mtd/nand/raw/brcmnand/brcmnand.h')
-rw-r--r-- | drivers/mtd/nand/raw/brcmnand/brcmnand.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.h b/drivers/mtd/nand/raw/brcmnand/brcmnand.h new file mode 100644 index 000000000000..5c44cd4aba87 --- /dev/null +++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.h @@ -0,0 +1,74 @@ +/* + * Copyright © 2015 Broadcom Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __BRCMNAND_H__ +#define __BRCMNAND_H__ + +#include <linux/types.h> +#include <linux/io.h> + +struct platform_device; +struct dev_pm_ops; + +struct brcmnand_soc { + bool (*ctlrdy_ack)(struct brcmnand_soc *soc); + void (*ctlrdy_set_enabled)(struct brcmnand_soc *soc, bool en); + void (*prepare_data_bus)(struct brcmnand_soc *soc, bool prepare, + bool is_param); +}; + +static inline void brcmnand_soc_data_bus_prepare(struct brcmnand_soc *soc, + bool is_param) +{ + if (soc && soc->prepare_data_bus) + soc->prepare_data_bus(soc, true, is_param); +} + +static inline void brcmnand_soc_data_bus_unprepare(struct brcmnand_soc *soc, + bool is_param) +{ + if (soc && soc->prepare_data_bus) + soc->prepare_data_bus(soc, false, is_param); +} + +static inline u32 brcmnand_readl(void __iomem *addr) +{ + /* + * MIPS endianness is configured by boot strap, which also reverses all + * bus endianness (i.e., big-endian CPU + big endian bus ==> native + * endian I/O). + * + * Other architectures (e.g., ARM) either do not support big endian, or + * else leave I/O in little endian mode. + */ + if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)) + return __raw_readl(addr); + else + return readl_relaxed(addr); +} + +static inline void brcmnand_writel(u32 val, void __iomem *addr) +{ + /* See brcmnand_readl() comments */ + if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)) + __raw_writel(val, addr); + else + writel_relaxed(val, addr); +} + +int brcmnand_probe(struct platform_device *pdev, struct brcmnand_soc *soc); +int brcmnand_remove(struct platform_device *pdev); + +extern const struct dev_pm_ops brcmnand_pm_ops; + +#endif /* __BRCMNAND_H__ */ |