d2951dfa07
Simplify things by making the S3CMCI driver just use slot GPIO with descriptors instead of passing around the global GPIO numbers that we want to get rid of. Getting the names of the GPIO chips into the machine descriptor tables was a bit of a challenge but I think I have them right. The platform data supports passing in inversion flags, but no platform is using them, and it is highly unlikely that we will add more, so drop them. The long term plan is to let the inversion flags on the GPIO machine descriptor do the job. The lines are flagged as GPIO_ACTIVE_[LOW|HIGH] as that is what they are, and since we can now rely on the descriptors to have the right polarity, we set the "override_active_level" to false in mmc_gpiod_request_cd() and mmc_gpiod_request_ro(). Cc: Jaehoon Chung <jh80.chung@samsung.com> Cc: Sylwester Nawrocki <s.nawrocki@samsung.com> Cc: Sergio Prado <sergio.prado@e-labworks.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
50 lines
1.8 KiB
C
50 lines
1.8 KiB
C
/* 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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};
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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_set_platdata(struct s3c24xx_mci_pdata *pdata);
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#endif /* _ARCH_NCI_H */
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