projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| bb3cee2b LW |
1 | /* |
| 2 | * | |
| 3 | * arch/arm/mach-u300/mmc.c | |
| 4 | * | |
| 5 | * | |
| ec8f1253 | 6 | * Copyright (C) 2009 ST-Ericsson SA |
| bb3cee2b LW |
7 | * License terms: GNU General Public License (GPL) version 2 |
| 8 | * | |
| 9 | * Author: Linus Walleij <linus.walleij@stericsson.com> | |
| ec8f1253 | 10 | * Author: Johan Lundin |
| bb3cee2b LW |
11 | * Author: Jonas Aaberg <jonas.aberg@stericsson.com> |
| 12 | */ | |
| 13 | #include <linux/device.h> | |
| 14 | #include <linux/amba/bus.h> | |
| 15 | #include <linux/mmc/host.h> | |
| bb3cee2b | 16 | #include <linux/gpio.h> |
| ec8f1253 | 17 | #include <linux/dmaengine.h> |
| 6ef297f8 | 18 | #include <linux/amba/mmci.h> |
| 5a0e3ad6 | 19 | #include <linux/slab.h> |
| ec8f1253 LW |
20 | #include <mach/coh901318.h> |
| 21 | #include <mach/dma_channels.h> | |
| bb3cee2b | 22 | |
| bb3cee2b | 23 | #include "mmc.h" |
| df1e0520 | 24 | #include "padmux.h" |
| bb3cee2b | 25 | |
| 1a721859 LW |
26 | static struct mmci_platform_data mmc0_plat_data = { |
| 27 | /* | |
| 28 | * Do not set ocr_mask or voltage translation function, | |
| 29 | * we have a regulator we can control instead. | |
| 30 | */ | |
| 31 | /* Nominally 2.85V on our platform */ | |
| 32 | .f_max = 24000000, | |
| 33 | .gpio_wp = -1, | |
| 34 | .gpio_cd = U300_GPIO_PIN_MMC_CD, | |
| 35 | .cd_invert = true, | |
| 36 | .capabilities = MMC_CAP_MMC_HIGHSPEED | | |
| 37 | MMC_CAP_SD_HIGHSPEED | MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA, | |
| ec8f1253 LW |
38 | #ifdef CONFIG_COH901318 |
| 39 | .dma_filter = coh901318_filter_id, | |
| 40 | .dma_rx_param = (void *) U300_DMA_MMCSD_RX_TX, | |
| 41 | /* Don't specify a TX channel, this RX channel is bidirectional */ | |
| 42 | #endif | |
| bb3cee2b LW |
43 | }; |
| 44 | ||
| bb3cee2b LW |
45 | int __devinit mmc_init(struct amba_device *adev) |
| 46 | { | |
| bb3cee2b | 47 | struct device *mmcsd_device = &adev->dev; |
| df1e0520 | 48 | struct pmx *pmx; |
| bb3cee2b LW |
49 | int ret = 0; |
| 50 | ||
| 1a721859 | 51 | mmcsd_device->platform_data = &mmc0_plat_data; |
| bb3cee2b | 52 | |
| df1e0520 LW |
53 | /* |
| 54 | * Setup padmuxing for MMC. Since this must always be | |
| 55 | * compiled into the kernel, pmx is never released. | |
| 56 | */ | |
| 57 | pmx = pmx_get(mmcsd_device, U300_APP_PMX_MMC_SETTING); | |
| 58 | ||
| 59 | if (IS_ERR(pmx)) | |
| 60 | pr_warning("Could not get padmux handle\n"); | |
| 61 | else { | |
| 62 | ret = pmx_activate(mmcsd_device, pmx); | |
| 63 | if (IS_ERR_VALUE(ret)) | |
| 64 | pr_warning("Could not activate padmuxing\n"); | |
| 65 | } | |
| 66 | ||
| bb3cee2b LW |
67 | return ret; |
| 68 | } |