1. 根目录:
2. drivers
3. mmc
4. host
5. sdhci-esdhc.h

/*
 * Freescale eSDHC controller driver generics for OF and pltfm.
 *
 * Copyright (c) 2007 Freescale Semiconductor, Inc.
 * Copyright (c) 2009 MontaVista Software, Inc.
 * Copyright (c) 2010 Pengutronix e.K.
 *   Author: Wolfram Sang <w.sang@pengutronix.de>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License.
 */

#ifndef _DRIVERS_MMC_SDHCI_ESDHC_H
#define _DRIVERS_MMC_SDHCI_ESDHC_H

/*
 * Ops and quirks for the Freescale eSDHC controller.
 */

#define ESDHC_DEFAULT_QUIRKS	(SDHCI_QUIRK_FORCE_BLK_SZ_2048 | \
				SDHCI_QUIRK_NO_BUSY_IRQ | \
				SDHCI_QUIRK_NONSTANDARD_CLOCK | \
				SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK | \
				SDHCI_QUIRK_PIO_NEEDS_DELAY | \
				SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET)

#define ESDHC_SYSTEM_CONTROL	0x2c
#define ESDHC_CLOCK_MASK	0x0000fff0
#define ESDHC_PREDIV_SHIFT	8
#define ESDHC_DIVIDER_SHIFT	4
#define ESDHC_CLOCK_PEREN	0x00000004
#define ESDHC_CLOCK_HCKEN	0x00000002
#define ESDHC_CLOCK_IPGEN	0x00000001

/* pltfm-specific */
#define ESDHC_HOST_CONTROL_LE	0x20

/*
 * P2020 interpretation of the SDHCI_HOST_CONTROL register
 */
#define ESDHC_CTRL_4BITBUS          (0x1 << 1)
#define ESDHC_CTRL_8BITBUS          (0x2 << 1)
#define ESDHC_CTRL_BUSWIDTH_MASK    (0x3 << 1)

/* OF-specific */
#define ESDHC_DMA_SYSCTL	0x40c
#define ESDHC_DMA_SNOOP		0x00000040

#define ESDHC_HOST_CONTROL_RES	0x05

#endif /* _DRIVERS_MMC_SDHCI_ESDHC_H */