LXR linux/drivers/mmc/host/sdhci-esdhc.h

   1/*
   2 * Freescale eSDHC controller driver generics for OF and pltfm.
   3 *
   4 * Copyright (c) 2007 Freescale Semiconductor, Inc.
   5 * Copyright (c) 2009 MontaVista Software, Inc.
   6 * Copyright (c) 2010 Pengutronix e.K.
   7 *   Author: Wolfram Sang <w.sang@pengutronix.de>
   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.
  12 */
  13
  14#ifndef _DRIVERS_MMC_SDHCI_ESDHC_H
  15#define _DRIVERS_MMC_SDHCI_ESDHC_H
  16
  17/*
  18 * Ops and quirks for the Freescale eSDHC controller.
  19 */
  20
  21#define ESDHC_DEFAULT_QUIRKS    (SDHCI_QUIRK_FORCE_BLK_SZ_2048 | \
  22                                SDHCI_QUIRK_NO_BUSY_IRQ | \
  23                                SDHCI_QUIRK_NONSTANDARD_CLOCK | \
  24                                SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK | \
  25                                SDHCI_QUIRK_PIO_NEEDS_DELAY | \
  26                                SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET)
  27
  28#define ESDHC_SYSTEM_CONTROL    0x2c
  29#define ESDHC_CLOCK_MASK        0x0000fff0
  30#define ESDHC_PREDIV_SHIFT      8
  31#define ESDHC_DIVIDER_SHIFT     4
  32#define ESDHC_CLOCK_PEREN       0x00000004
  33#define ESDHC_CLOCK_HCKEN       0x00000002
  34#define ESDHC_CLOCK_IPGEN       0x00000001
  35
  36/* pltfm-specific */
  37#define ESDHC_HOST_CONTROL_LE   0x20
  38
  39/*
  40 * P2020 interpretation of the SDHCI_HOST_CONTROL register
  41 */
  42#define ESDHC_CTRL_4BITBUS          (0x1 << 1)
  43#define ESDHC_CTRL_8BITBUS          (0x2 << 1)
  44#define ESDHC_CTRL_BUSWIDTH_MASK    (0x3 << 1)
  45
  46/* OF-specific */
  47#define ESDHC_DMA_SYSCTL        0x40c
  48#define ESDHC_DMA_SNOOP         0x00000040
  49
  50#define ESDHC_HOST_CONTROL_RES  0x05
  51
  52#endif /* _DRIVERS_MMC_SDHCI_ESDHC_H */
  53