projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 23cb3b21 RM |
1 | /* |
| 2 | * Broadcom specific AMBA | |
| 3 | * ChipCommon NAND flash interface | |
| 4 | * | |
| 5 | * Licensed under the GNU/GPL. See COPYING for details. | |
| 6 | */ | |
| 7 | ||
| 58b27101 RM |
8 | #include "bcma_private.h" |
| 9 | ||
| 371a0044 | 10 | #include <linux/platform_device.h> |
| 23cb3b21 | 11 | #include <linux/bcma/bcma.h> |
| 23cb3b21 | 12 | |
| 371a0044 RM |
13 | struct platform_device bcma_nflash_dev = { |
| 14 | .name = "bcma_nflash", | |
| 15 | .num_resources = 0, | |
| 16 | }; | |
| 17 | ||
| 23cb3b21 RM |
18 | /* Initialize NAND flash access */ |
| 19 | int bcma_nflash_init(struct bcma_drv_cc *cc) | |
| 20 | { | |
| 371a0044 RM |
21 | struct bcma_bus *bus = cc->core->bus; |
| 22 | ||
| 23 | if (bus->chipinfo.id != BCMA_CHIP_ID_BCM4706 && | |
| 6b112dec | 24 | cc->core->id.rev != 38) { |
| 371a0044 RM |
25 | bcma_err(bus, "NAND flash on unsupported board!\n"); |
| 26 | return -ENOTSUPP; | |
| 27 | } | |
| 28 | ||
| 29 | if (!(cc->capabilities & BCMA_CC_CAP_NFLASH)) { | |
| 30 | bcma_err(bus, "NAND flash not present according to ChipCommon\n"); | |
| 31 | return -ENODEV; | |
| 32 | } | |
| 33 | ||
| 34 | cc->nflash.present = true; | |
| e661b75a HM |
35 | if (cc->core->id.rev == 38 && |
| 36 | (cc->status & BCMA_CC_CHIPST_5357_NAND_BOOT)) | |
| 37 | cc->nflash.boot = true; | |
| 371a0044 RM |
38 | |
| 39 | /* Prepare platform device, but don't register it yet. It's too early, | |
| 40 | * malloc (required by device_private_init) is not available yet. */ | |
| 41 | bcma_nflash_dev.dev.platform_data = &cc->nflash; | |
| 42 | ||
| 23cb3b21 RM |
43 | return 0; |
| 44 | } |