| Rabin Vincent | fbf1ead | 2010-09-29 19:46:32 +0530 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) ST-Ericsson SA 2010 |
| 3 | * |
| 4 | * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson |
| 5 | * License terms: GNU General Public License (GPL), version 2. |
| 6 | */ |
| 7 | |
| 8 | #include <linux/kernel.h> |
| 9 | #include <linux/dma-mapping.h> |
| 10 | #include <linux/err.h> |
| 11 | #include <linux/irq.h> |
| 12 | #include <linux/slab.h> |
| 13 | #include <linux/platform_device.h> |
| 14 | #include <linux/amba/bus.h> |
| 15 | |
| 16 | #include <mach/hardware.h> |
| 17 | |
| 18 | #include "devices-common.h" |
| 19 | |
| 20 | struct amba_device * |
| 21 | dbx500_add_amba_device(const char *name, resource_size_t base, |
| 22 | int irq, void *pdata, unsigned int periphid) |
| 23 | { |
| 24 | struct amba_device *dev; |
| 25 | int ret; |
| 26 | |
| 27 | dev = kzalloc(sizeof *dev, GFP_KERNEL); |
| 28 | if (!dev) |
| 29 | return ERR_PTR(-ENOMEM); |
| 30 | |
| 31 | dev->dev.init_name = name; |
| 32 | |
| 33 | dev->res.start = base; |
| 34 | dev->res.end = base + SZ_4K - 1; |
| 35 | dev->res.flags = IORESOURCE_MEM; |
| 36 | |
| 37 | dev->dma_mask = DMA_BIT_MASK(32); |
| 38 | dev->dev.coherent_dma_mask = DMA_BIT_MASK(32); |
| 39 | |
| 40 | dev->irq[0] = irq; |
| 41 | dev->irq[1] = NO_IRQ; |
| 42 | |
| 43 | dev->periphid = periphid; |
| 44 | |
| 45 | dev->dev.platform_data = pdata; |
| 46 | |
| 47 | ret = amba_device_register(dev, &iomem_resource); |
| 48 | if (ret) { |
| 49 | kfree(dev); |
| 50 | return ERR_PTR(ret); |
| 51 | } |
| 52 | |
| 53 | return dev; |
| 54 | } |
| 55 | |
| 56 | static struct platform_device * |
| 57 | dbx500_add_platform_device(const char *name, int id, void *pdata, |
| 58 | struct resource *res, int resnum) |
| 59 | { |
| 60 | struct platform_device *dev; |
| 61 | int ret; |
| 62 | |
| 63 | dev = platform_device_alloc(name, id); |
| 64 | if (!dev) |
| 65 | return ERR_PTR(-ENOMEM); |
| 66 | |
| 67 | dev->dev.coherent_dma_mask = DMA_BIT_MASK(32); |
| 68 | dev->dev.dma_mask = &dev->dev.coherent_dma_mask; |
| 69 | |
| 70 | ret = platform_device_add_resources(dev, res, resnum); |
| 71 | if (ret) |
| 72 | goto out_free; |
| 73 | |
| 74 | dev->dev.platform_data = pdata; |
| 75 | |
| 76 | ret = platform_device_add(dev); |
| 77 | if (ret) |
| 78 | goto out_free; |
| 79 | |
| 80 | return dev; |
| 81 | |
| 82 | out_free: |
| 83 | platform_device_put(dev); |
| 84 | return ERR_PTR(ret); |
| 85 | } |
| 86 | |
| 87 | struct platform_device * |
| 88 | dbx500_add_platform_device_4k1irq(const char *name, int id, |
| 89 | resource_size_t base, |
| 90 | int irq, void *pdata) |
| 91 | { |
| 92 | struct resource resources[] = { |
| 93 | [0] = { |
| 94 | .start = base, |
| 95 | .end = base + SZ_4K - 1, |
| 96 | .flags = IORESOURCE_MEM, |
| 97 | }, |
| 98 | [1] = { |
| 99 | .start = irq, |
| 100 | .end = irq, |
| 101 | .flags = IORESOURCE_IRQ, |
| 102 | } |
| 103 | }; |
| 104 | |
| 105 | return dbx500_add_platform_device(name, id, pdata, resources, |
| 106 | ARRAY_SIZE(resources)); |
| 107 | } |