1 /*
2  *
3  * arch/arm/mach-u300/mmc.c
4  *
5  *
6  * Copyright (C) 2009 ST-Ericsson SA
7  * License terms: GNU General Public License (GPL) version 2
8  *
9  * Author: Linus Walleij <linus.walleij@stericsson.com>
10  * Author: Johan Lundin
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>
16 #include <linux/dmaengine.h>
17 #include <linux/amba/mmci.h>
18 #include <linux/slab.h>
19 #include <mach/coh901318.h>
20 #include <mach/dma_channels.h>
21 
22 #include "u300-gpio.h"
23 #include "mmc.h"
24 
25 static struct mmci_platform_data mmc0_plat_data = {
26 	/*
27 	 * Do not set ocr_mask or voltage translation function,
28 	 * we have a regulator we can control instead.
29 	 */
30 	/* Nominally 2.85V on our platform */
31 	.f_max = 24000000,
32 	.gpio_wp = -1,
33 	.gpio_cd = U300_GPIO_PIN_MMC_CD,
34 	.cd_invert = true,
35 	.capabilities = MMC_CAP_MMC_HIGHSPEED |
36 	MMC_CAP_SD_HIGHSPEED | MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
37 #ifdef CONFIG_COH901318
38 	.dma_filter = coh901318_filter_id,
39 	.dma_rx_param = (void *) U300_DMA_MMCSD_RX_TX,
40 	/* Don't specify a TX channel, this RX channel is bidirectional */
41 #endif
42 };
43 
mmc_init(struct amba_device * adev)44 int __devinit mmc_init(struct amba_device *adev)
45 {
46 	struct device *mmcsd_device = &adev->dev;
47 	int ret = 0;
48 
49 	mmcsd_device->platform_data = &mmc0_plat_data;
50 
51 	return ret;
52 }
53