diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2013-03-04 18:28:21 +0100 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2013-04-19 13:51:23 +0200 |
| commit | cc014f3e29e15140e35e14fa194034baee92df2a (patch) | |
| tree | 0cdd69202fef892fb3f14e4d8f534493329f166b /include/linux/platform_data | |
| parent | f76da510d61a8793c990bee9acc10744ee2b2a8c (diff) | |
mmc: sdhci-s3c: remove platform dependencies
plat/regs-sdhci.h is not used anywhere but in the sdhci-s3c
driver, so it can become a local file there and all other
inclusions removed.
plat/sdhci.h is used only to define the platform devices,
and with the exception of the platform_data structure not
needed by the driver, so we can split out the platform_data
definition instead and leave the rest to platform code.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'include/linux/platform_data')
| -rw-r--r-- | include/linux/platform_data/mmc-sdhci-s3c.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/include/linux/platform_data/mmc-sdhci-s3c.h b/include/linux/platform_data/mmc-sdhci-s3c.h new file mode 100644 index 00000000000..249f02387a3 --- /dev/null +++ b/include/linux/platform_data/mmc-sdhci-s3c.h @@ -0,0 +1,56 @@ +#ifndef __PLATFORM_DATA_SDHCI_S3C_H +#define __PLATFORM_DATA_SDHCI_S3C_H + +struct platform_device; + +enum cd_types { + S3C_SDHCI_CD_INTERNAL, /* use mmc internal CD line */ + S3C_SDHCI_CD_EXTERNAL, /* use external callback */ + S3C_SDHCI_CD_GPIO, /* use external gpio pin for CD line */ + S3C_SDHCI_CD_NONE, /* no CD line, use polling to detect card */ + S3C_SDHCI_CD_PERMANENT, /* no CD line, card permanently wired to host */ +}; + +/** + * 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. + * @host_caps2: The second standard MMC host capabilities bit field. + * @cd_type: Type of Card Detection method (see cd_types enum above) + * @ext_cd_init: Initialize external card detect subsystem. Called on + * sdhci-s3c driver probe when cd_type == S3C_SDHCI_CD_EXTERNAL. + * notify_func argument is a callback to the sdhci-s3c driver + * that triggers the card detection event. Callback arguments: + * dev is pointer to platform device of the host controller, + * state is new state of the card (0 - removed, 1 - inserted). + * @ext_cd_cleanup: Cleanup external card detect subsystem. Called on + * sdhci-s3c driver remove when cd_type == S3C_SDHCI_CD_EXTERNAL. + * notify_func argument is the same callback as for ext_cd_init. + * @ext_cd_gpio: gpio pin used for external CD line, valid only if + * cd_type == S3C_SDHCI_CD_GPIO + * @ext_cd_gpio_invert: invert values for external CD gpio line + * @cfg_gpio: Configure the GPIO for a specific card bit-width + * + * 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. +*/ +struct s3c_sdhci_platdata { + unsigned int max_width; + unsigned int host_caps; + unsigned int host_caps2; + unsigned int pm_caps; + enum cd_types cd_type; + + int ext_cd_gpio; + bool ext_cd_gpio_invert; + int (*ext_cd_init)(void (*notify_func)(struct platform_device *, + int state)); + int (*ext_cd_cleanup)(void (*notify_func)(struct platform_device *, + int state)); + + void (*cfg_gpio)(struct platform_device *dev, int width); +}; + + +#endif /* __PLATFORM_DATA_SDHCI_S3C_H */ |