arch/arm/mach-u300/mmc.c

   1 /*
   2  *
   3  * arch/arm/mach-u300/mmc.c
   4  *
   5  *
   6  * Copyright (C) 2009 ST-Ericsson SA
   7  * License terms: GNU General Public License (GPL) version 2
   8  *
   9  * Author: Linus Walleij <linus.walleij@stericsson.com>
  10  * Author: Johan Lundin
  11  * Author: Jonas Aaberg <jonas.aberg@stericsson.com>
  12  */
  13 #include <linux/device.h>
  14 #include <linux/amba/bus.h>
  15 #include <linux/mmc/host.h>
  16 #include <linux/dmaengine.h>
  17 #include <linux/amba/mmci.h>
  18 #include <linux/slab.h>
  19 #include <mach/coh901318.h>
  20 #include <mach/dma_channels.h>
  21
  22 #include "u300-gpio.h"
  23 #include "mmc.h"
  24
  25 static struct mmci_platform_data mmc0_plat_data = {
  26         /*
  27          * Do not set ocr_mask or voltage translation function,
  28          * we have a regulator we can control instead.
  29          */
  30         /* Nominally 2.85V on our platform */
  31         .f_max = 24000000,
  32         .gpio_wp = -1,
  33         .gpio_cd = U300_GPIO_PIN_MMC_CD,
  34         .cd_invert = true,
  35         .capabilities = MMC_CAP_MMC_HIGHSPEED |
  36         MMC_CAP_SD_HIGHSPEED | MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
  37 #ifdef CONFIG_COH901318
  38         .dma_filter = coh901318_filter_id,
  39         .dma_rx_param = (void *) U300_DMA_MMCSD_RX_TX,
  40         /* Don't specify a TX channel, this RX channel is bidirectional */
  41 #endif
  42 };
  43
  44 int __devinit mmc_init(struct amba_device *adev)
  45 {
  46         struct device *mmcsd_device = &adev->dev;
  47         int ret = 0;
  48
  49         mmcsd_device->platform_data = &mmc0_plat_data;
  50
  51         return ret;
  52 }