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sdhci.h

/* linux/arch/arm/plat-s3c/include/plat/sdhci.h
 *
 * Copyright 2008 Openmoko, Inc.
 * Copyright 2008 Simtec Electronics
 *    http://armlinux.simtec.co.uk/
 *    Ben Dooks <ben@simtec.co.uk>
 *
 * S3C Platform - SDHCI (HSMMC) platform data definitions
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
*/

#ifndef __PLAT_S3C_SDHCI_H
#define __PLAT_S3C_SDHCI_H __FILE__

struct platform_device;
struct mmc_host;
struct mmc_card;
struct mmc_ios;

/**
 * struct s3c_sdhci_platdata() - Platform device data for Samsung SDHCI
 * @max_width: The maximum number of data bits supported.
 * @host_caps: Standard MMC host capabilities bit field.
 * @cfg_gpio: Configure the GPIO for a specific card bit-width
 * @cfg_card: Configure the interface for a specific card and speed. This
 *            is necessary the controllers and/or GPIO blocks require the
 *          changing of driver-strength and other controls dependant on
 *          the card and speed of operation.
 *
 * Initialisation data specific to either the machine or the platform
 * for the device driver to use or call-back when configuring gpio or
 * card speed information.
*/
00037 struct s3c_sdhci_platdata {
      unsigned int      max_width;
      unsigned int      host_caps;

      char        **clocks;   /* set of clock sources */

      void  (*cfg_gpio)(struct platform_device *dev, int width);
      void  (*cfg_card)(struct platform_device *dev,
                      void __iomem *regbase,
                      struct mmc_ios *ios,
                      struct mmc_card *card);
};

/**
 * s3c_sdhci0_set_platdata - Set platform data for S3C SDHCI device.
 * @pd: Platform data to register to device.
 *
 * Register the given platform data for use withe S3C SDHCI device.
 * The call will copy the platform data, so the board definitions can
 * make the structure itself __initdata.
 */
extern void s3c_sdhci0_set_platdata(struct s3c_sdhci_platdata *pd);
extern void s3c_sdhci1_set_platdata(struct s3c_sdhci_platdata *pd);

/* Default platform data, exported so that per-cpu initialisation can
 * set the correct one when there are more than one cpu type selected.
*/

extern struct s3c_sdhci_platdata s3c_hsmmc0_def_platdata;
extern struct s3c_sdhci_platdata s3c_hsmmc1_def_platdata;

/* Helper function availablity */

extern void s3c64xx_setup_sdhci0_cfg_gpio(struct platform_device *, int w);
extern void s3c64xx_setup_sdhci1_cfg_gpio(struct platform_device *, int w);

/* S3C6400 SDHCI setup */

#ifdef CONFIG_S3C6400_SETUP_SDHCI
extern char *s3c6400_hsmmc_clksrcs[4];

#ifdef CONFIG_S3C_DEV_HSMMC
extern void s3c6400_setup_sdhci_cfg_card(struct platform_device *dev,
                               void __iomem *r,
                               struct mmc_ios *ios,
                               struct mmc_card *card);

static inline void s3c6400_default_sdhci0(void)
{
      s3c_hsmmc0_def_platdata.clocks = s3c6400_hsmmc_clksrcs;
      s3c_hsmmc0_def_platdata.cfg_gpio = s3c64xx_setup_sdhci0_cfg_gpio;
      s3c_hsmmc0_def_platdata.cfg_card = s3c6400_setup_sdhci_cfg_card;
}

#else
static inline void s3c6400_default_sdhci0(void) { }
#endif  /* CONFIG_S3C_DEV_HSMMC */

#ifdef CONFIG_S3C_DEV_HSMMC1
static inline void s3c6400_default_sdhci1(void)
{
      s3c_hsmmc1_def_platdata.clocks = s3c6400_hsmmc_clksrcs;
      s3c_hsmmc1_def_platdata.cfg_gpio = s3c64xx_setup_sdhci1_cfg_gpio;
      s3c_hsmmc1_def_platdata.cfg_card = s3c6400_setup_sdhci_cfg_card;
}
#else
static inline void s3c6400_default_sdhci1(void) { }
#endif /* CONFIG_S3C_DEV_HSMMC1 */

#else
static inline void s3c6400_default_sdhci0(void) { }
static inline void s3c6400_default_sdhci1(void) { }
#endif /* CONFIG_S3C6400_SETUP_SDHCI */

/* S3C6410 SDHCI setup */

#ifdef CONFIG_S3C6410_SETUP_SDHCI
extern char *s3c6410_hsmmc_clksrcs[4];

extern void s3c6410_setup_sdhci0_cfg_card(struct platform_device *dev,
                                 void __iomem *r,
                                 struct mmc_ios *ios,
                                 struct mmc_card *card);

#ifdef CONFIG_S3C_DEV_HSMMC
static inline void s3c6410_default_sdhci0(void)
{
      s3c_hsmmc0_def_platdata.clocks = s3c6410_hsmmc_clksrcs;
      s3c_hsmmc0_def_platdata.cfg_gpio = s3c64xx_setup_sdhci0_cfg_gpio;
      s3c_hsmmc0_def_platdata.cfg_card = s3c6410_setup_sdhci0_cfg_card;
}
#else
static inline void s3c6410_default_sdhci0(void) { }
#endif /* CONFIG_S3C_DEV_HSMMC */

#ifdef CONFIG_S3C_DEV_HSMMC1
static inline void s3c6410_default_sdhci1(void)
{
      s3c_hsmmc1_def_platdata.clocks = s3c6410_hsmmc_clksrcs;
      s3c_hsmmc1_def_platdata.cfg_gpio = s3c64xx_setup_sdhci1_cfg_gpio;
      s3c_hsmmc1_def_platdata.cfg_card = s3c6410_setup_sdhci0_cfg_card;
}
#else
static inline void s3c6410_default_sdhci1(void) { }
#endif /* CONFIG_S3C_DEV_HSMMC1 */

#else
static inline void s3c6410_default_sdhci0(void) { }
static inline void s3c6410_default_sdhci1(void) { }
#endif /* CONFIG_S3C6410_SETUP_SDHCI */

#endif /* __PLAT_S3C_SDHCI_H */

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