52 lines
2.0 KiB
C
52 lines
2.0 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ARCH_MCI_H
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#define _ARCH_MCI_H
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/**
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* struct s3c24xx_mci_pdata - sd/mmc controller platform data
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* @no_wprotect: Set this to indicate there is no write-protect switch.
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* @no_detect: Set this if there is no detect switch.
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* @wprotect_invert: Invert the default sense of the write protect switch.
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* @use_dma: Set to allow the use of DMA.
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* @gpio_detect: GPIO number for the card detect line.
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* @gpio_wprotect: GPIO number for the write protect line.
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* @ocr_avail: The mask of the available power states, non-zero to use.
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* @set_power: Callback to control the power mode.
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*
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* The @gpio_detect is used for card detection when @no_wprotect is unset,
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* and the default sense is that 0 returned from gpio_get_value() means
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* that a card is inserted. If @detect_invert is set, then the value from
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* gpio_get_value() is inverted, which makes 1 mean card inserted.
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*
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* The driver will use @gpio_wprotect to signal whether the card is write
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* protected if @no_wprotect is not set. A 0 returned from gpio_get_value()
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* means the card is read/write, and 1 means read-only. The @wprotect_invert
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* will invert the value returned from gpio_get_value().
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*
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* Card power is set by @ocr_availa, using MCC_VDD_ constants if it is set
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* to a non-zero value, otherwise the default of 3.2-3.4V is used.
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*/
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struct s3c24xx_mci_pdata {
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unsigned int no_wprotect:1;
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unsigned int no_detect:1;
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unsigned int wprotect_invert:1;
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unsigned int use_dma:1;
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unsigned long ocr_avail;
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void (*set_power)(unsigned char power_mode,
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unsigned short vdd);
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struct gpio_desc *bus[6];
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};
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/**
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* s3c24xx_mci_set_platdata - set platform data for mmc/sdi device
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* @pdata: The platform data
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*
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* Copy the platform data supplied by @pdata so that this can be marked
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* __initdata.
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*/
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extern void s3c24xx_mci_def_set_power(unsigned char power_mode, unsigned short vdd);
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extern void s3c24xx_mci_set_platdata(struct s3c24xx_mci_pdata *pdata);
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#endif /* _ARCH_NCI_H */
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