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
15struct sdhci_pltfm_data {
16 const struct sdhci_ops *ops;
17 unsigned int quirks;
18 unsigned int quirks2;
19};
20
21struct 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[] ____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 */
36static inline u32 sdhci_be32bs_readl(struct sdhci_host *host, int reg)
37{
38 return in_be32(host->ioaddr + reg);
39}
40
41static inline u16 sdhci_be32bs_readw(struct sdhci_host *host, int reg)
42{
43 return in_be16(host->ioaddr + (reg ^ 0x2));
44}
45
46static inline u8 sdhci_be32bs_readb(struct sdhci_host *host, int reg)
47{
48 return in_8(host->ioaddr + (reg ^ 0x3));
49}
50
51static inline void sdhci_be32bs_writel(struct sdhci_host *host,
52 u32 val, int reg)
53{
54 out_be32(host->ioaddr + reg, val);
55}
56
57static 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
81static 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
90void sdhci_get_property(struct platform_device *pdev);
91
92static inline void sdhci_get_of_property(struct platform_device *pdev)
93{
94 return sdhci_get_property(pdev);
95}
96
97extern struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev,
98 const struct sdhci_pltfm_data *pdata,
99 size_t priv_size);
100
101extern int sdhci_pltfm_init_and_add_host(struct platform_device *pdev,
102 const struct sdhci_pltfm_data *pdata,
103 size_t priv_size);
104extern void sdhci_pltfm_remove(struct platform_device *pdev);
105
106extern unsigned int sdhci_pltfm_clk_get_max_clock(struct sdhci_host *host);
107
108static inline void *sdhci_pltfm_priv(struct sdhci_pltfm_host *host)
109{
110 return host->private;
111}
112
113extern const struct dev_pm_ops sdhci_pltfm_pmops;
114#ifdef CONFIG_PM_SLEEP
115int sdhci_pltfm_suspend(struct device *dev);
116int sdhci_pltfm_resume(struct device *dev);
117#else
118static inline int sdhci_pltfm_suspend(struct device *dev) { return 0; }
119static inline int sdhci_pltfm_resume(struct device *dev) { return 0; }
120#endif
121
122#endif /* _DRIVERS_MMC_SDHCI_PLTFM_H */
123

source code of linux/drivers/mmc/host/sdhci-pltfm.h