tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
18struct sdhci_pltfm_data {
19 const struct sdhci_ops *ops;
20 unsigned int quirks;
21 unsigned int quirks2;
22};
23
24struct 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 */
39static inline u32 sdhci_be32bs_readl(struct sdhci_host *host, int reg)
40{
41 return in_be32(host->ioaddr + reg);
42}
43
44static inline u16 sdhci_be32bs_readw(struct sdhci_host *host, int reg)
45{
46 return in_be16(host->ioaddr + (reg ^ 0x2));
47}
48
49static inline u8 sdhci_be32bs_readb(struct sdhci_host *host, int reg)
50{
51 return in_8(host->ioaddr + (reg ^ 0x3));
52}
53
54static inline void sdhci_be32bs_writel(struct sdhci_host *host,
55 u32 val, int reg)
56{
57 out_be32(host->ioaddr + reg, val);
58}
59
60static 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
84static 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
93void sdhci_get_property(struct platform_device *pdev);
94
95static inline void sdhci_get_of_property(struct platform_device *pdev)
96{
97 return sdhci_get_property(pdev);
98}
99
100extern struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev,
101 const struct sdhci_pltfm_data *pdata,
102 size_t priv_size);
103extern void sdhci_pltfm_free(struct platform_device *pdev);
104
105extern int sdhci_pltfm_register(struct platform_device *pdev,
106 const struct sdhci_pltfm_data *pdata,
107 size_t priv_size);
108extern int sdhci_pltfm_unregister(struct platform_device *pdev);
109
110extern unsigned int sdhci_pltfm_clk_get_max_clock(struct sdhci_host *host);
111
112static inline void *sdhci_pltfm_priv(struct sdhci_pltfm_host *host)
113{
114 return host->private;
115}
116
117int sdhci_pltfm_suspend(struct device *dev);
118int sdhci_pltfm_resume(struct device *dev);
119extern const struct dev_pm_ops sdhci_pltfm_pmops;
120
121#endif /* _DRIVERS_MMC_SDHCI_PLTFM_H */