1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright 2010 MontaVista Software, LLC. 4 * 5 * Author: Anton Vorontsov <avorontsov@ru.mvista.com> 6 */ 7 8 #ifndef _DRIVERS_MMC_SDHCI_PLTFM_H 9 #define _DRIVERS_MMC_SDHCI_PLTFM_H 10 11 #include <linux/clk.h> 12 #include <linux/platform_device.h> 13 #include "sdhci.h" 14 15 struct sdhci_pltfm_data { 16 const struct sdhci_ops *ops; 17 unsigned int quirks; 18 unsigned int quirks2; 19 }; 20 21 struct sdhci_pltfm_host { 22 struct clk *clk; 23 24 /* migrate from sdhci_of_host */ 25 unsigned int clock; 26 u16 xfer_mode_shadow; 27 28 unsigned long private[0] ____cacheline_aligned; 29 }; 30 31 #ifdef CONFIG_MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER 32 /* 33 * These accessors are designed for big endian hosts doing I/O to 34 * little endian controllers incorporating a 32-bit hardware byte swapper. 35 */ 36 static inline u32 sdhci_be32bs_readl(struct sdhci_host *host, int reg) 37 { 38 return in_be32(host->ioaddr + reg); 39 } 40 41 static inline u16 sdhci_be32bs_readw(struct sdhci_host *host, int reg) 42 { 43 return in_be16(host->ioaddr + (reg ^ 0x2)); 44 } 45 46 static inline u8 sdhci_be32bs_readb(struct sdhci_host *host, int reg) 47 { 48 return in_8(host->ioaddr + (reg ^ 0x3)); 49 } 50 51 static inline void sdhci_be32bs_writel(struct sdhci_host *host, 52 u32 val, int reg) 53 { 54 out_be32(host->ioaddr + reg, val); 55 } 56 57 static inline void sdhci_be32bs_writew(struct sdhci_host *host, 58 u16 val, int reg) 59 { 60 struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); 61 int base = reg & ~0x3; 62 int shift = (reg & 0x2) * 8; 63 64 switch (reg) { 65 case SDHCI_TRANSFER_MODE: 66 /* 67 * Postpone this write, we must do it together with a 68 * command write that is down below. 69 */ 70 pltfm_host->xfer_mode_shadow = val; 71 return; 72 case SDHCI_COMMAND: 73 sdhci_be32bs_writel(host, 74 val << 16 | pltfm_host->xfer_mode_shadow, 75 SDHCI_TRANSFER_MODE); 76 return; 77 } 78 clrsetbits_be32(host->ioaddr + base, 0xffff << shift, val << shift); 79 } 80 81 static inline void sdhci_be32bs_writeb(struct sdhci_host *host, u8 val, int reg) 82 { 83 int base = reg & ~0x3; 84 int shift = (reg & 0x3) * 8; 85 86 clrsetbits_be32(host->ioaddr + base , 0xff << shift, val << shift); 87 } 88 #endif /* CONFIG_MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER */ 89 90 void sdhci_get_property(struct platform_device *pdev); 91 92 static inline void sdhci_get_of_property(struct platform_device *pdev) 93 { 94 return sdhci_get_property(pdev); 95 } 96 97 extern struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev, 98 const struct sdhci_pltfm_data *pdata, 99 size_t priv_size); 100 extern void sdhci_pltfm_free(struct platform_device *pdev); 101 102 extern int sdhci_pltfm_register(struct platform_device *pdev, 103 const struct sdhci_pltfm_data *pdata, 104 size_t priv_size); 105 extern int sdhci_pltfm_unregister(struct platform_device *pdev); 106 107 extern unsigned int sdhci_pltfm_clk_get_max_clock(struct sdhci_host *host); 108 109 static inline void *sdhci_pltfm_priv(struct sdhci_pltfm_host *host) 110 { 111 return host->private; 112 } 113 114 int sdhci_pltfm_suspend(struct device *dev); 115 int sdhci_pltfm_resume(struct device *dev); 116 extern const struct dev_pm_ops sdhci_pltfm_pmops; 117 118 #endif /* _DRIVERS_MMC_SDHCI_PLTFM_H */ 119