2 * drivers/mmc/host/sdhci-of-hlwd.c
4 * Nintendo Wii Secure Digital Host Controller Interface.
5 * Copyright (C) 2009 The GameCube Linux Team
6 * Copyright (C) 2009 Albert Herranz
8 * Based on sdhci-of-esdhc.c
10 * Copyright (c) 2007 Freescale Semiconductor, Inc.
11 * Copyright (c) 2009 MontaVista Software, Inc.
13 * Authors: Xiaobo Xie <X.Xie@freescale.com>
14 * Anton Vorontsov <avorontsov@ru.mvista.com>
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation; either version 2 of the License, or (at
19 * your option) any later version.
22 #include <linux/delay.h>
23 #include <linux/module.h>
24 #include <linux/mmc/host.h>
25 #include "sdhci-pltfm.h"
28 * Ops and quirks for the Nintendo Wii SDHCI controllers.
32 * We need a small delay after each write, or things go horribly wrong.
34 #define SDHCI_HLWD_WRITE_DELAY 5 /* usecs */
36 static void sdhci_hlwd_writel(struct sdhci_host
*host
, u32 val
, int reg
)
38 sdhci_be32bs_writel(host
, val
, reg
);
39 udelay(SDHCI_HLWD_WRITE_DELAY
);
42 static void sdhci_hlwd_writew(struct sdhci_host
*host
, u16 val
, int reg
)
44 sdhci_be32bs_writew(host
, val
, reg
);
45 udelay(SDHCI_HLWD_WRITE_DELAY
);
48 static void sdhci_hlwd_writeb(struct sdhci_host
*host
, u8 val
, int reg
)
50 sdhci_be32bs_writeb(host
, val
, reg
);
51 udelay(SDHCI_HLWD_WRITE_DELAY
);
54 static const struct sdhci_ops sdhci_hlwd_ops
= {
55 .read_l
= sdhci_be32bs_readl
,
56 .read_w
= sdhci_be32bs_readw
,
57 .read_b
= sdhci_be32bs_readb
,
58 .write_l
= sdhci_hlwd_writel
,
59 .write_w
= sdhci_hlwd_writew
,
60 .write_b
= sdhci_hlwd_writeb
,
61 .set_clock
= sdhci_set_clock
,
62 .set_bus_width
= sdhci_set_bus_width
,
64 .set_uhs_signaling
= sdhci_set_uhs_signaling
,
67 static const struct sdhci_pltfm_data sdhci_hlwd_pdata
= {
68 .quirks
= SDHCI_QUIRK_32BIT_DMA_ADDR
|
69 SDHCI_QUIRK_32BIT_DMA_SIZE
,
70 .ops
= &sdhci_hlwd_ops
,
73 static int sdhci_hlwd_probe(struct platform_device
*pdev
)
75 return sdhci_pltfm_register(pdev
, &sdhci_hlwd_pdata
, 0);
78 static const struct of_device_id sdhci_hlwd_of_match
[] = {
79 { .compatible
= "nintendo,hollywood-sdhci" },
82 MODULE_DEVICE_TABLE(of
, sdhci_hlwd_of_match
);
84 static struct platform_driver sdhci_hlwd_driver
= {
87 .of_match_table
= sdhci_hlwd_of_match
,
88 .pm
= SDHCI_PLTFM_PMOPS
,
90 .probe
= sdhci_hlwd_probe
,
91 .remove
= sdhci_pltfm_unregister
,
94 module_platform_driver(sdhci_hlwd_driver
);
96 MODULE_DESCRIPTION("Nintendo Wii SDHCI OF driver");
97 MODULE_AUTHOR("The GameCube Linux Team, Albert Herranz");
98 MODULE_LICENSE("GPL v2");