| Willy Tu | da5aa61 | 2025-12-18 07:32:34 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Header for MultiMediaCard (MMC) |
| 3 | * |
| 4 | * Copyright 2002 Hewlett-Packard Company |
| 5 | * |
| 6 | * Use consistent with the GNU GPL is permitted, |
| 7 | * provided that this copyright notice is |
| 8 | * preserved in its entirety in all copies and derived works. |
| 9 | * |
| 10 | * HEWLETT-PACKARD COMPANY MAKES NO WARRANTIES, EXPRESSED OR IMPLIED, |
| 11 | * AS TO THE USEFULNESS OR CORRECTNESS OF THIS CODE OR ITS |
| 12 | * FITNESS FOR ANY PARTICULAR PURPOSE. |
| 13 | * |
| 14 | * Many thanks to Alessandro Rubini and Jonathan Corbet! |
| 15 | * |
| 16 | * Based strongly on code by: |
| 17 | * |
| 18 | * Author: Yong-iL Joh <tolkien@mizi.com> |
| 19 | * |
| 20 | * Author: Andrew Christian |
| 21 | * 15 May 2002 |
| 22 | */ |
| 23 | |
| 24 | // clang-format off |
| 25 | #ifndef LINUX_MMC_MMC_H |
| 26 | #define LINUX_MMC_MMC_H |
| 27 | |
| 28 | #include <linux/types.h> |
| 29 | |
| 30 | /* Standard MMC commands (4.1) type argument response */ |
| 31 | /* class 1 */ |
| 32 | #define MMC_SWITCH 6 /* ac [31:0] See below R1b */ |
| 33 | #define MMC_SEND_EXT_CSD 8 /* adtc R1 */ |
| 34 | |
| 35 | /* |
| 36 | * EXT_CSD fields |
| 37 | */ |
| 38 | |
| 39 | #define EXT_CSD_BKOPS_EN 163 /* R/W */ |
| 40 | #define EXT_CSD_BKOPS_START 164 /* W */ |
| Willy Tu | 30bfe8e | 2025-12-30 19:47:52 +0000 | [diff] [blame] | 41 | #define EXT_CSD_HS_TIMING 185 /* R/W */ |
| Willy Tu | da5aa61 | 2025-12-18 07:32:34 +0000 | [diff] [blame] | 42 | #define EXT_CSD_BKOPS_STATUS 246 /* RO */ |
| 43 | #define EXT_CSD_BKOPS_SUPPORT 502 /* RO */ |
| 44 | |
| Willy Tu | 30bfe8e | 2025-12-30 19:47:52 +0000 | [diff] [blame] | 45 | |
| 46 | |
| Willy Tu | da5aa61 | 2025-12-18 07:32:34 +0000 | [diff] [blame] | 47 | /* |
| 48 | * EXT_CSD field definitions |
| 49 | */ |
| 50 | |
| 51 | #define EXT_CSD_CMD_SET_NORMAL (1<<0) |
| 52 | |
| Willy Tu | 30bfe8e | 2025-12-30 19:47:52 +0000 | [diff] [blame] | 53 | #define EXT_CSD_TIMING_BC 0 /* Backwards compatility */ |
| 54 | #define EXT_CSD_TIMING_HS 1 /* High speed */ |
| 55 | #define EXT_CSD_TIMING_HS200 2 /* HS200 */ |
| 56 | #define EXT_CSD_TIMING_HS400 3 /* HS400 */ |
| 57 | |
| Willy Tu | da5aa61 | 2025-12-18 07:32:34 +0000 | [diff] [blame] | 58 | /* |
| 59 | * BKOPS modes |
| 60 | */ |
| 61 | #define EXT_CSD_MANUAL_BKOPS_MASK 0x01 |
| 62 | #define EXT_CSD_AUTO_BKOPS_MASK 0x02 |
| 63 | |
| 64 | /* |
| 65 | * MMC_SWITCH access modes |
| 66 | */ |
| 67 | #define MMC_SWITCH_MODE_WRITE_BYTE 0x03 /* Set target to value */ |
| 68 | |
| 69 | #endif /* LINUX_MMC_MMC_H */ |
| 70 | // clang-format on |