arch/arm/mach-exynos/dev-dwmci.c

   1 /*
   2  * linux/arch/arm/mach-exynos4/dev-dwmci.c
   3  *
   4  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
   5  *              http://www.samsung.com
   6  *
   7  * Platform device for Synopsys DesignWare Mobile Storage IP
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/dma-mapping.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/interrupt.h>
  19 #include <linux/ioport.h>
  20 #include <linux/mmc/dw_mmc.h>
  21
  22 #include <plat/devs.h>
  23
  24 #include <mach/map.h>
  25
  26 static int exynos4_dwmci_get_bus_wd(u32 slot_id)
  27 {
  28         return 4;
  29 }
  30
  31 static int exynos4_dwmci_init(u32 slot_id, irq_handler_t handler, void *data)
  32 {
  33         return 0;
  34 }
  35
  36 static struct resource exynos4_dwmci_resource[] = {
  37         [0] = DEFINE_RES_MEM(EXYNOS4_PA_DWMCI, SZ_4K),
  38         [1] = DEFINE_RES_IRQ(EXYNOS4_IRQ_DWMCI),
  39 };
  40
  41 static struct dw_mci_board exynos4_dwci_pdata = {
  42         .num_slots                      = 1,
  43         .quirks                         = DW_MCI_QUIRK_BROKEN_CARD_DETECTION,
  44         .bus_hz                         = 80 * 1000 * 1000,
  45         .detect_delay_ms        = 200,
  46         .init                           = exynos4_dwmci_init,
  47         .get_bus_wd                     = exynos4_dwmci_get_bus_wd,
  48 };
  49
  50 static u64 exynos4_dwmci_dmamask = DMA_BIT_MASK(32);
  51
  52 struct platform_device exynos4_device_dwmci = {
  53         .name           = "dw_mmc",
  54         .id             = -1,
  55         .num_resources  = ARRAY_SIZE(exynos4_dwmci_resource),
  56         .resource       = exynos4_dwmci_resource,
  57         .dev            = {
  58                 .dma_mask               = &exynos4_dwmci_dmamask,
  59                 .coherent_dma_mask      = DMA_BIT_MASK(32),
  60                 .platform_data  = &exynos4_dwci_pdata,
  61         },
  62 };
  63
  64 void __init exynos4_dwmci_set_platdata(struct dw_mci_board *pd)
  65 {
  66         struct dw_mci_board *npd;
  67
  68         npd = s3c_set_platdata(pd, sizeof(struct dw_mci_board),
  69                         &exynos4_device_dwmci);
  70
  71         if (!npd->init)
  72                 npd->init = exynos4_dwmci_init;
  73         if (!npd->get_bus_wd)
  74                 npd->get_bus_wd = exynos4_dwmci_get_bus_wd;
  75 }