mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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f82954e98b
subrepo: subdir: "emummc" merged: "3791be9f" upstream: origin: "https://github.com/m4xw/emummc" branch: "exo2" commit: "3791be9f" git-subrepo: version: "0.4.1" origin: "???" commit: "???"
91 lines
No EOL
1.8 KiB
C
Vendored
91 lines
No EOL
1.8 KiB
C
Vendored
/*
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* Copyright (c) 2019 CTCaer
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "nx_sd.h"
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#include "sdmmc.h"
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#include "sdmmc_driver.h"
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#include "../soc/gpio.h"
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#include "../libs/fatfs/ff.h"
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extern sdmmc_t sd_sdmmc;
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extern sdmmc_storage_t sd_storage;
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static u32 sd_mode = SD_UHS_SDR104;
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u32 nx_sd_mode_get()
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{
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return sd_mode;
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}
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int nx_sd_init_retry(bool power_cycle)
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{
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u32 bus_width = SDMMC_BUS_WIDTH_4;
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u32 type = SDHCI_TIMING_UHS_SDR104;
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// Power cycle SD card.
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if (power_cycle)
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{
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sd_mode--;
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sdmmc_storage_end(&sd_storage);
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}
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// Get init parameters.
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switch (sd_mode)
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{
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case SD_INIT_FAIL: // Reset to max.
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return 0;
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case SD_1BIT_HS25:
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bus_width = SDMMC_BUS_WIDTH_1;
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type = SDHCI_TIMING_SD_HS25;
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break;
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case SD_4BIT_HS25:
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type = SDHCI_TIMING_SD_HS25;
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break;
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case SD_UHS_SDR82:
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type = SDHCI_TIMING_UHS_SDR82;
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break;
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case SD_UHS_SDR104:
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type = SDHCI_TIMING_UHS_SDR104;
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break;
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default:
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sd_mode = SD_UHS_SDR104;
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}
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return sdmmc_storage_init_sd(&sd_storage, &sd_sdmmc, bus_width, type);
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}
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bool nx_sd_initialize(bool power_cycle)
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{
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if (power_cycle)
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sdmmc_storage_end(&sd_storage);
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int res = !nx_sd_init_retry(false);
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while (true)
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{
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if (!res)
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return true;
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else
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{
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if (sd_mode == SD_INIT_FAIL)
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break;
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res = !nx_sd_init_retry(true);
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}
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}
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return false;
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} |