1 /* 2 * Copyright 2010 MontaVista Software, LLC. 3 * 4 * Author: Anton Vorontsov <avorontsov@ru.mvista.com> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 */ 10 11 #ifndef _DRIVERS_MMC_SDHCI_PLTFM_H 12 #define _DRIVERS_MMC_SDHCI_PLTFM_H 13 14 #include <linux/clk.h> 15 #include <linux/platform_device.h> 16 #include "sdhci.h" 17 18 struct sdhci_pltfm_data { 19 const struct sdhci_ops *ops; 20 unsigned int quirks; 21 unsigned int quirks2; 22 }; 23 24 struct sdhci_pltfm_host { 25 struct clk *clk; 26 27 /* migrate from sdhci_of_host */ 28 unsigned int clock; 29 u16 xfer_mode_shadow; 30 31 unsigned long private[0] ____cacheline_aligned; 32 }; 33 34 #ifdef CONFIG_MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER 35 /* 36 * These accessors are designed for big endian hosts doing I/O to 37 * little endian controllers incorporating a 32-bit hardware byte swapper. 38 */ 39 static inline u32 sdhci_be32bs_readl(struct sdhci_host *host, int reg) 40 { 41 return in_be32(host->ioaddr + reg); 42 } 43 44 static inline u16 sdhci_be32bs_readw(struct sdhci_host *host, int reg) 45 { 46 return in_be16(host->ioaddr + (reg ^ 0x2)); 47 } 48 49 static inline u8 sdhci_be32bs_readb(struct sdhci_host *host, int reg) 50 { 51 return in_8(host->ioaddr + (reg ^ 0x3)); 52 } 53 54 static inline void sdhci_be32bs_writel(struct sdhci_host *host, 55 u32 val, int reg) 56 { 57 out_be32(host->ioaddr + reg, val); 58 } 59 60 static inline void sdhci_be32bs_writew(struct sdhci_host *host, 61 u16 val, int reg) 62 { 63 struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); 64 int base = reg & ~0x3; 65 int shift = (reg & 0x2) * 8; 66 67 switch (reg) { 68 case SDHCI_TRANSFER_MODE: 69 /* 70 * Postpone this write, we must do it together with a 71 * command write that is down below. 72 */ 73 pltfm_host->xfer_mode_shadow = val; 74 return; 75 case SDHCI_COMMAND: 76 sdhci_be32bs_writel(host, 77 val << 16 | pltfm_host->xfer_mode_shadow, 78 SDHCI_TRANSFER_MODE); 79 return; 80 } 81 clrsetbits_be32(host->ioaddr + base, 0xffff << shift, val << shift); 82 } 83 84 static inline void sdhci_be32bs_writeb(struct sdhci_host *host, u8 val, int reg) 85 { 86 int base = reg & ~0x3; 87 int shift = (reg & 0x3) * 8; 88 89 clrsetbits_be32(host->ioaddr + base , 0xff << shift, val << shift); 90 } 91 #endif /* CONFIG_MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER */ 92 93 extern void sdhci_get_of_property(struct platform_device *pdev); 94 95 extern struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev, 96 const struct sdhci_pltfm_data *pdata, 97 size_t priv_size); 98 extern void sdhci_pltfm_free(struct platform_device *pdev); 99 100 extern int sdhci_pltfm_register(struct platform_device *pdev, 101 const struct sdhci_pltfm_data *pdata, 102 size_t priv_size); 103 extern int sdhci_pltfm_unregister(struct platform_device *pdev); 104 105 extern unsigned int sdhci_pltfm_clk_get_max_clock(struct sdhci_host *host); 106 107 static inline void *sdhci_pltfm_priv(struct sdhci_pltfm_host *host) 108 { 109 return host->private; 110 } 111 112 int sdhci_pltfm_suspend(struct device *dev); 113 int sdhci_pltfm_resume(struct device *dev); 114 extern const struct dev_pm_ops sdhci_pltfm_pmops; 115 116 #endif /* _DRIVERS_MMC_SDHCI_PLTFM_H */ 117