diff options
Diffstat (limited to 'include/linux/platform_data/mmc-s3cmci.h')
| -rw-r--r-- | include/linux/platform_data/mmc-s3cmci.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/include/linux/platform_data/mmc-s3cmci.h b/include/linux/platform_data/mmc-s3cmci.h new file mode 100644 index 000000000000..c42d31711944 --- /dev/null +++ b/include/linux/platform_data/mmc-s3cmci.h @@ -0,0 +1,52 @@ +#ifndef _ARCH_MCI_H +#define _ARCH_MCI_H + +/** + * struct s3c24xx_mci_pdata - sd/mmc controller platform data + * @no_wprotect: Set this to indicate there is no write-protect switch. + * @no_detect: Set this if there is no detect switch. + * @wprotect_invert: Invert the default sense of the write protect switch. + * @detect_invert: Invert the default sense of the write protect switch. + * @use_dma: Set to allow the use of DMA. + * @gpio_detect: GPIO number for the card detect line. + * @gpio_wprotect: GPIO number for the write protect line. + * @ocr_avail: The mask of the available power states, non-zero to use. + * @set_power: Callback to control the power mode. + * + * The @gpio_detect is used for card detection when @no_wprotect is unset, + * and the default sense is that 0 returned from gpio_get_value() means + * that a card is inserted. If @detect_invert is set, then the value from + * gpio_get_value() is inverted, which makes 1 mean card inserted. + * + * The driver will use @gpio_wprotect to signal whether the card is write + * protected if @no_wprotect is not set. A 0 returned from gpio_get_value() + * means the card is read/write, and 1 means read-only. The @wprotect_invert + * will invert the value returned from gpio_get_value(). + * + * Card power is set by @ocr_availa, using MCC_VDD_ constants if it is set + * to a non-zero value, otherwise the default of 3.2-3.4V is used. + */ +struct s3c24xx_mci_pdata { + unsigned int no_wprotect:1; + unsigned int no_detect:1; + unsigned int wprotect_invert:1; + unsigned int detect_invert:1; /* set => detect active high */ + unsigned int use_dma:1; + + unsigned int gpio_detect; + unsigned int gpio_wprotect; + unsigned long ocr_avail; + void (*set_power)(unsigned char power_mode, + unsigned short vdd); +}; + +/** + * s3c24xx_mci_set_platdata - set platform data for mmc/sdi device + * @pdata: The platform data + * + * Copy the platform data supplied by @pdata so that this can be marked + * __initdata. + */ +extern void s3c24xx_mci_set_platdata(struct s3c24xx_mci_pdata *pdata); + +#endif /* _ARCH_NCI_H */ |