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/mmc/host.h> 24 #include "sdhci-pltfm.h" 25 26 /* 27 * Ops and quirks for the Nintendo Wii SDHCI controllers. 28 */ 29 30 /* 31 * We need a small delay after each write, or things go horribly wrong. 32 */ 33 #define SDHCI_HLWD_WRITE_DELAY 5 /* usecs */ 34 35 static void sdhci_hlwd_writel(struct sdhci_host *host, u32 val, int reg) 36 { 37 sdhci_be32bs_writel(host, val, reg); 38 udelay(SDHCI_HLWD_WRITE_DELAY); 39 } 40 41 static void sdhci_hlwd_writew(struct sdhci_host *host, u16 val, int reg) 42 { 43 sdhci_be32bs_writew(host, val, reg); 44 udelay(SDHCI_HLWD_WRITE_DELAY); 45 } 46 47 static void sdhci_hlwd_writeb(struct sdhci_host *host, u8 val, int reg) 48 { 49 sdhci_be32bs_writeb(host, val, reg); 50 udelay(SDHCI_HLWD_WRITE_DELAY); 51 } 52 53 static struct sdhci_ops sdhci_hlwd_ops = { 54 .read_l = sdhci_be32bs_readl, 55 .read_w = sdhci_be32bs_readw, 56 .read_b = sdhci_be32bs_readb, 57 .write_l = sdhci_hlwd_writel, 58 .write_w = sdhci_hlwd_writew, 59 .write_b = sdhci_hlwd_writeb, 60 }; 61 62 static struct sdhci_pltfm_data sdhci_hlwd_pdata = { 63 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR | 64 SDHCI_QUIRK_32BIT_DMA_SIZE, 65 .ops = &sdhci_hlwd_ops, 66 }; 67 68 static int __devinit sdhci_hlwd_probe(struct platform_device *pdev) 69 { 70 return sdhci_pltfm_register(pdev, &sdhci_hlwd_pdata); 71 } 72 73 static int __devexit sdhci_hlwd_remove(struct platform_device *pdev) 74 { 75 return sdhci_pltfm_unregister(pdev); 76 } 77 78 static const struct of_device_id sdhci_hlwd_of_match[] = { 79 { .compatible = "nintendo,hollywood-sdhci" }, 80 { } 81 }; 82 MODULE_DEVICE_TABLE(of, sdhci_hlwd_of_match); 83 84 static struct platform_driver sdhci_hlwd_driver = { 85 .driver = { 86 .name = "sdhci-hlwd", 87 .owner = THIS_MODULE, 88 .of_match_table = sdhci_hlwd_of_match, 89 }, 90 .probe = sdhci_hlwd_probe, 91 .remove = __devexit_p(sdhci_hlwd_remove), 92 #ifdef CONFIG_PM 93 .suspend = sdhci_pltfm_suspend, 94 .resume = sdhci_pltfm_resume, 95 #endif 96 }; 97 98 static int __init sdhci_hlwd_init(void) 99 { 100 return platform_driver_register(&sdhci_hlwd_driver); 101 } 102 module_init(sdhci_hlwd_init); 103 104 static void __exit sdhci_hlwd_exit(void) 105 { 106 platform_driver_unregister(&sdhci_hlwd_driver); 107 } 108 module_exit(sdhci_hlwd_exit); 109 110 MODULE_DESCRIPTION("Nintendo Wii SDHCI OF driver"); 111 MODULE_AUTHOR("The GameCube Linux Team, Albert Herranz"); 112 MODULE_LICENSE("GPL v2"); 113