diff options
Diffstat (limited to 'os/hal/src/mmcsd.c')
| -rw-r--r-- | os/hal/src/mmcsd.c | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/os/hal/src/mmcsd.c b/os/hal/src/mmcsd.c deleted file mode 100644 index c83095981..000000000 --- a/os/hal/src/mmcsd.c +++ /dev/null @@ -1,114 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011,2012,2013 Giovanni Di Sirio.
-
- This file is part of ChibiOS/RT.
-
- ChibiOS/RT is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS/RT is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file mmcsd.c
- * @brief MMC/SD cards common code.
- *
- * @addtogroup MMCSD
- * @{
- */
-
-#include "ch.h"
-#include "hal.h"
-
-#if HAL_USE_MMC_SPI || HAL_USE_SDC || defined(__DOXYGEN__)
-
-/*===========================================================================*/
-/* Driver local definitions. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver exported variables. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver local variables and types. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver local functions. */
-/*===========================================================================*/
-
-/**
- * @brief Gets a bit field from a words array.
- * @note The bit zero is the LSb of the first word.
- *
- * @param[in] data pointer to the words array
- * @param[in] end bit offset of the last bit of the field, inclusive
- * @param[in] start bit offset of the first bit of the field, inclusive
- *
- * @return The bits field value, left aligned.
- *
- * @notapi
- */
-static uint32_t mmcsd_get_slice(uint32_t *data, uint32_t end, uint32_t start) {
- unsigned startidx, endidx, startoff;
- uint32_t endmask;
-
- chDbgCheck((end >= start) && ((end - start) < 32), "mmcsd_get_slice");
-
- startidx = start / 32;
- startoff = start % 32;
- endidx = end / 32;
- endmask = (1 << ((end % 32) + 1)) - 1;
-
- /* One or two pieces?*/
- if (startidx < endidx)
- return (data[startidx] >> startoff) | /* Two pieces case. */
- ((data[endidx] & endmask) << (32 - startoff));
- return (data[startidx] & endmask) >> startoff; /* One piece case. */
-}
-
-/*===========================================================================*/
-/* Driver exported functions. */
-/*===========================================================================*/
-
-/**
- * @brief Extract card capacity from a CSD.
- * @details The capacity is returned as number of available blocks.
- *
- * @param[in] csd the CSD record
- *
- * @return The card capacity.
- * @retval 0 CSD format error
- */
-uint32_t mmcsdGetCapacity(uint32_t csd[4]) {
-
- switch (csd[3] >> 30) {
- uint32_t a, b, c;
- case 0:
- /* CSD version 1.0 */
- a = mmcsd_get_slice(csd, MMCSD_CSD_10_C_SIZE_SLICE);
- b = mmcsd_get_slice(csd, MMCSD_CSD_10_C_SIZE_MULT_SLICE);
- c = mmcsd_get_slice(csd, MMCSD_CSD_10_READ_BL_LEN_SLICE);
- return (a + 1) << (b + 2) << (c - 9); /* 2^9 == MMCSD_BLOCK_SIZE. */
- case 1:
- /* CSD version 2.0.*/
- return 1024 * (mmcsd_get_slice(csd, MMCSD_CSD_20_C_SIZE_SLICE) + 1);
- default:
- /* Reserved value detected.*/
- return 0;
- }
-}
-
-#endif /* HAL_USE_MMC_SPI || HAL_USE_SDC */
-
-/** @} */
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