1/* 2 * Copyright �� 2015 Broadcom Corporation 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 */ 13 14#ifndef __BRCMNAND_H__ 15#define __BRCMNAND_H__ 16 17#include <linux/types.h> 18#include <linux/io.h> 19 20struct platform_device; 21struct dev_pm_ops; 22 23struct brcmnand_soc { 24 bool (*ctlrdy_ack)(struct brcmnand_soc *soc); 25 void (*ctlrdy_set_enabled)(struct brcmnand_soc *soc, bool en); 26 void (*prepare_data_bus)(struct brcmnand_soc *soc, bool prepare); 27}; 28 29static inline void brcmnand_soc_data_bus_prepare(struct brcmnand_soc *soc) 30{ 31 if (soc && soc->prepare_data_bus) 32 soc->prepare_data_bus(soc, true); 33} 34 35static inline void brcmnand_soc_data_bus_unprepare(struct brcmnand_soc *soc) 36{ 37 if (soc && soc->prepare_data_bus) 38 soc->prepare_data_bus(soc, false); 39} 40 41static inline u32 brcmnand_readl(void __iomem *addr) 42{ 43 /* 44 * MIPS endianness is configured by boot strap, which also reverses all 45 * bus endianness (i.e., big-endian CPU + big endian bus ==> native 46 * endian I/O). 47 * 48 * Other architectures (e.g., ARM) either do not support big endian, or 49 * else leave I/O in little endian mode. 50 */ 51 if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)) 52 return __raw_readl(addr); 53 else 54 return readl_relaxed(addr); 55} 56 57static inline void brcmnand_writel(u32 val, void __iomem *addr) 58{ 59 /* See brcmnand_readl() comments */ 60 if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)) 61 __raw_writel(val, addr); 62 else 63 writel_relaxed(val, addr); 64} 65 66int brcmnand_probe(struct platform_device *pdev, struct brcmnand_soc *soc); 67int brcmnand_remove(struct platform_device *pdev); 68 69extern const struct dev_pm_ops brcmnand_pm_ops; 70 71#endif /* __BRCMNAND_H__ */ 72