1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * drivers/mmc/host/sdhci-of-hlwd.c
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Nintendo Wii Secure Digital Host Controller Interface.
6*4882a593Smuzhiyun * Copyright (C) 2009 The GameCube Linux Team
7*4882a593Smuzhiyun * Copyright (C) 2009 Albert Herranz
8*4882a593Smuzhiyun *
9*4882a593Smuzhiyun * Based on sdhci-of-esdhc.c
10*4882a593Smuzhiyun *
11*4882a593Smuzhiyun * Copyright (c) 2007 Freescale Semiconductor, Inc.
12*4882a593Smuzhiyun * Copyright (c) 2009 MontaVista Software, Inc.
13*4882a593Smuzhiyun *
14*4882a593Smuzhiyun * Authors: Xiaobo Xie <X.Xie@freescale.com>
15*4882a593Smuzhiyun * Anton Vorontsov <avorontsov@ru.mvista.com>
16*4882a593Smuzhiyun */
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun #include <linux/delay.h>
19*4882a593Smuzhiyun #include <linux/module.h>
20*4882a593Smuzhiyun #include <linux/mmc/host.h>
21*4882a593Smuzhiyun #include "sdhci-pltfm.h"
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun /*
24*4882a593Smuzhiyun * Ops and quirks for the Nintendo Wii SDHCI controllers.
25*4882a593Smuzhiyun */
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun /*
28*4882a593Smuzhiyun * We need a small delay after each write, or things go horribly wrong.
29*4882a593Smuzhiyun */
30*4882a593Smuzhiyun #define SDHCI_HLWD_WRITE_DELAY 5 /* usecs */
31*4882a593Smuzhiyun
sdhci_hlwd_writel(struct sdhci_host * host,u32 val,int reg)32*4882a593Smuzhiyun static void sdhci_hlwd_writel(struct sdhci_host *host, u32 val, int reg)
33*4882a593Smuzhiyun {
34*4882a593Smuzhiyun sdhci_be32bs_writel(host, val, reg);
35*4882a593Smuzhiyun udelay(SDHCI_HLWD_WRITE_DELAY);
36*4882a593Smuzhiyun }
37*4882a593Smuzhiyun
sdhci_hlwd_writew(struct sdhci_host * host,u16 val,int reg)38*4882a593Smuzhiyun static void sdhci_hlwd_writew(struct sdhci_host *host, u16 val, int reg)
39*4882a593Smuzhiyun {
40*4882a593Smuzhiyun sdhci_be32bs_writew(host, val, reg);
41*4882a593Smuzhiyun udelay(SDHCI_HLWD_WRITE_DELAY);
42*4882a593Smuzhiyun }
43*4882a593Smuzhiyun
sdhci_hlwd_writeb(struct sdhci_host * host,u8 val,int reg)44*4882a593Smuzhiyun static void sdhci_hlwd_writeb(struct sdhci_host *host, u8 val, int reg)
45*4882a593Smuzhiyun {
46*4882a593Smuzhiyun sdhci_be32bs_writeb(host, val, reg);
47*4882a593Smuzhiyun udelay(SDHCI_HLWD_WRITE_DELAY);
48*4882a593Smuzhiyun }
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun static const struct sdhci_ops sdhci_hlwd_ops = {
51*4882a593Smuzhiyun .read_l = sdhci_be32bs_readl,
52*4882a593Smuzhiyun .read_w = sdhci_be32bs_readw,
53*4882a593Smuzhiyun .read_b = sdhci_be32bs_readb,
54*4882a593Smuzhiyun .write_l = sdhci_hlwd_writel,
55*4882a593Smuzhiyun .write_w = sdhci_hlwd_writew,
56*4882a593Smuzhiyun .write_b = sdhci_hlwd_writeb,
57*4882a593Smuzhiyun .set_clock = sdhci_set_clock,
58*4882a593Smuzhiyun .set_bus_width = sdhci_set_bus_width,
59*4882a593Smuzhiyun .reset = sdhci_reset,
60*4882a593Smuzhiyun .set_uhs_signaling = sdhci_set_uhs_signaling,
61*4882a593Smuzhiyun };
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun static const struct sdhci_pltfm_data sdhci_hlwd_pdata = {
64*4882a593Smuzhiyun .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
65*4882a593Smuzhiyun SDHCI_QUIRK_32BIT_DMA_SIZE,
66*4882a593Smuzhiyun .ops = &sdhci_hlwd_ops,
67*4882a593Smuzhiyun };
68*4882a593Smuzhiyun
sdhci_hlwd_probe(struct platform_device * pdev)69*4882a593Smuzhiyun static int sdhci_hlwd_probe(struct platform_device *pdev)
70*4882a593Smuzhiyun {
71*4882a593Smuzhiyun return sdhci_pltfm_register(pdev, &sdhci_hlwd_pdata, 0);
72*4882a593Smuzhiyun }
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun static const struct of_device_id sdhci_hlwd_of_match[] = {
75*4882a593Smuzhiyun { .compatible = "nintendo,hollywood-sdhci" },
76*4882a593Smuzhiyun { }
77*4882a593Smuzhiyun };
78*4882a593Smuzhiyun MODULE_DEVICE_TABLE(of, sdhci_hlwd_of_match);
79*4882a593Smuzhiyun
80*4882a593Smuzhiyun static struct platform_driver sdhci_hlwd_driver = {
81*4882a593Smuzhiyun .driver = {
82*4882a593Smuzhiyun .name = "sdhci-hlwd",
83*4882a593Smuzhiyun .probe_type = PROBE_PREFER_ASYNCHRONOUS,
84*4882a593Smuzhiyun .of_match_table = sdhci_hlwd_of_match,
85*4882a593Smuzhiyun .pm = &sdhci_pltfm_pmops,
86*4882a593Smuzhiyun },
87*4882a593Smuzhiyun .probe = sdhci_hlwd_probe,
88*4882a593Smuzhiyun .remove = sdhci_pltfm_unregister,
89*4882a593Smuzhiyun };
90*4882a593Smuzhiyun
91*4882a593Smuzhiyun module_platform_driver(sdhci_hlwd_driver);
92*4882a593Smuzhiyun
93*4882a593Smuzhiyun MODULE_DESCRIPTION("Nintendo Wii SDHCI OF driver");
94*4882a593Smuzhiyun MODULE_AUTHOR("The GameCube Linux Team, Albert Herranz");
95*4882a593Smuzhiyun MODULE_LICENSE("GPL v2");
96