4889c9ca17
In the code comments referring to section 3.6.1, changed the reference from 'SD specification' to 'SD host controller specification' for a clearer and more accurate context. Signed-off-by: Pisit Sawangvonganan <pisit@ndrsolution.com>
63 lines
1.5 KiB
C
63 lines
1.5 KiB
C
/*
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* Copyright 2022 NXP
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_SUBSYS_SD_SD_OPS_H_
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#define ZEPHYR_SUBSYS_SD_SD_OPS_H_
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/*
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* Switches voltage of SD card to 1.8V, as described by
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* "Signal voltage switch procedure" in section 3.6.1 of SD host controller specification.
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*/
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int sdmmc_switch_voltage(struct sd_card *card);
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/*
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* Reads card identification register, and decodes it
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*/
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int card_read_cid(struct sd_card *card);
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/*
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* Read card specific data register
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*/
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int sdmmc_read_csd(struct sd_card *card);
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/*
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* Requests card to publish a new relative card address, and move from
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* identification to data mode
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*/
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int sdmmc_request_rca(struct sd_card *card);
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/*
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* Selects card, moving it into data transfer mode
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*/
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int sdmmc_select_card(struct sd_card *card);
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/* Returns 1 if host supports UHS, zero otherwise */
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static inline int sdmmc_host_uhs(struct sdhc_host_props *props)
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{
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return (props->host_caps.sdr50_support |
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props->host_caps.uhs_2_support |
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props->host_caps.sdr104_support |
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props->host_caps.ddr50_support)
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& (props->host_caps.vol_180_support);
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}
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int card_ioctl(struct sd_card *card, uint8_t cmd, void *buf);
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int card_read_blocks(struct sd_card *card, uint8_t *rbuf,
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uint32_t start_block, uint32_t num_blocks);
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int card_write_blocks(struct sd_card *card, const uint8_t *wbuf,
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uint32_t start_block, uint32_t num_blocks);
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int card_app_command(struct sd_card *card, int relative_card_address);
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int sdmmc_read_status(struct sd_card *card);
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int sdmmc_wait_ready(struct sd_card *card);
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#endif /* ZEPHYR_SUBSYS_SD_SD_OPS_H_ */
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