1 /* 2 * drivers/mmc/host/sdhci-of-hlwd.c 3 * 4 * Nintendo Wii Secure Digital Host Controller Interface. 5 * Copyright (C) 2009 The GameCube Linux Team 6 * Copyright (C) 2009 Albert Herranz 7 * 8 * Based on sdhci-of-esdhc.c 9 * 10 * Copyright (c) 2007 Freescale Semiconductor, Inc. 11 * Copyright (c) 2009 MontaVista Software, Inc. 12 * 13 * Authors: Xiaobo Xie <X.Xie@freescale.com> 14 * Anton Vorontsov <avorontsov@ru.mvista.com> 15 * 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. 20 */ 21 22 #include <linux/delay.h> 23 #include <linux/module.h> 24 #include <linux/mmc/host.h> 25 #include "sdhci-pltfm.h" 26 27 /* 28 * Ops and quirks for the Nintendo Wii SDHCI controllers. 29 */ 30 31 /* 32 * We need a small delay after each write, or things go horribly wrong. 33 */ 34 #define SDHCI_HLWD_WRITE_DELAY 5 /* usecs */ 35 36 static void sdhci_hlwd_writel(struct sdhci_host *host, u32 val, int reg) 37 { 38 sdhci_be32bs_writel(host, val, reg); 39 udelay(SDHCI_HLWD_WRITE_DELAY); 40 } 41 42 static void sdhci_hlwd_writew(struct sdhci_host *host, u16 val, int reg) 43 { 44 sdhci_be32bs_writew(host, val, reg); 45 udelay(SDHCI_HLWD_WRITE_DELAY); 46 } 47 48 static void sdhci_hlwd_writeb(struct sdhci_host *host, u8 val, int reg) 49 { 50 sdhci_be32bs_writeb(host, val, reg); 51 udelay(SDHCI_HLWD_WRITE_DELAY); 52 } 53 54 static 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 }; 62 63 static struct sdhci_pltfm_data sdhci_hlwd_pdata = { 64 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR | 65 SDHCI_QUIRK_32BIT_DMA_SIZE, 66 .ops = &sdhci_hlwd_ops, 67 }; 68 69 static int __devinit sdhci_hlwd_probe(struct platform_device *pdev) 70 { 71 return sdhci_pltfm_register(pdev, &sdhci_hlwd_pdata); 72 } 73 74 static int __devexit sdhci_hlwd_remove(struct platform_device *pdev) 75 { 76 return sdhci_pltfm_unregister(pdev); 77 } 78 79 static const struct of_device_id sdhci_hlwd_of_match[] = { 80 { .compatible = "nintendo,hollywood-sdhci" }, 81 { } 82 }; 83 MODULE_DEVICE_TABLE(of, sdhci_hlwd_of_match); 84 85 static struct platform_driver sdhci_hlwd_driver = { 86 .driver = { 87 .name = "sdhci-hlwd", 88 .owner = THIS_MODULE, 89 .of_match_table = sdhci_hlwd_of_match, 90 }, 91 .probe = sdhci_hlwd_probe, 92 .remove = __devexit_p(sdhci_hlwd_remove), 93 #ifdef CONFIG_PM 94 .suspend = sdhci_pltfm_suspend, 95 .resume = sdhci_pltfm_resume, 96 #endif 97 }; 98 99 static int __init sdhci_hlwd_init(void) 100 { 101 return platform_driver_register(&sdhci_hlwd_driver); 102 } 103 module_init(sdhci_hlwd_init); 104 105 static void __exit sdhci_hlwd_exit(void) 106 { 107 platform_driver_unregister(&sdhci_hlwd_driver); 108 } 109 module_exit(sdhci_hlwd_exit); 110 111 MODULE_DESCRIPTION("Nintendo Wii SDHCI OF driver"); 112 MODULE_AUTHOR("The GameCube Linux Team, Albert Herranz"); 113 MODULE_LICENSE("GPL v2"); 114