G, Manjunath Kondaiah | 6568f7c | 2010-12-20 18:27:19 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * OMAP1/OMAP7xx - specific DMA driver |
| 3 | * |
| 4 | * Copyright (C) 2003 - 2008 Nokia Corporation |
| 5 | * Author: Juha Yrjölä <juha.yrjola@nokia.com> |
| 6 | * DMA channel linking for 1610 by Samuel Ortiz <samuel.ortiz@nokia.com> |
| 7 | * Graphics DMA and LCD DMA graphics tranformations |
| 8 | * by Imre Deak <imre.deak@nokia.com> |
| 9 | * OMAP2/3 support Copyright (C) 2004-2007 Texas Instruments, Inc. |
| 10 | * Some functions based on earlier dma-omap.c Copyright (C) 2001 RidgeRun, Inc. |
| 11 | * |
| 12 | * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/ |
| 13 | * Converted DMA library into platform driver |
| 14 | * - G, Manjunath Kondaiah <manjugk@ti.com> |
| 15 | * |
| 16 | * This program is free software; you can redistribute it and/or modify |
| 17 | * it under the terms of the GNU General Public License version 2 as |
| 18 | * published by the Free Software Foundation. |
| 19 | */ |
| 20 | |
| 21 | #include <linux/err.h> |
| 22 | #include <linux/io.h> |
| 23 | #include <linux/slab.h> |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/init.h> |
| 26 | #include <linux/device.h> |
| 27 | |
| 28 | #include <plat/dma.h> |
| 29 | #include <plat/tc.h> |
| 30 | #include <plat/irqs.h> |
| 31 | |
| 32 | #define OMAP1_DMA_BASE (0xfffed800) |
| 33 | |
| 34 | static struct resource res[] __initdata = { |
| 35 | [0] = { |
| 36 | .start = OMAP1_DMA_BASE, |
| 37 | .end = OMAP1_DMA_BASE + SZ_2K - 1, |
| 38 | .flags = IORESOURCE_MEM, |
| 39 | }, |
| 40 | [1] = { |
| 41 | .name = "0", |
| 42 | .start = INT_DMA_CH0_6, |
| 43 | .flags = IORESOURCE_IRQ, |
| 44 | }, |
| 45 | [2] = { |
| 46 | .name = "1", |
| 47 | .start = INT_DMA_CH1_7, |
| 48 | .flags = IORESOURCE_IRQ, |
| 49 | }, |
| 50 | [3] = { |
| 51 | .name = "2", |
| 52 | .start = INT_DMA_CH2_8, |
| 53 | .flags = IORESOURCE_IRQ, |
| 54 | }, |
| 55 | [4] = { |
| 56 | .name = "3", |
| 57 | .start = INT_DMA_CH3, |
| 58 | .flags = IORESOURCE_IRQ, |
| 59 | }, |
| 60 | [5] = { |
| 61 | .name = "4", |
| 62 | .start = INT_DMA_CH4, |
| 63 | .flags = IORESOURCE_IRQ, |
| 64 | }, |
| 65 | [6] = { |
| 66 | .name = "5", |
| 67 | .start = INT_DMA_CH5, |
| 68 | .flags = IORESOURCE_IRQ, |
| 69 | }, |
| 70 | [7] = { |
| 71 | .name = "6", |
| 72 | .start = INT_1610_DMA_CH6, |
| 73 | .flags = IORESOURCE_IRQ, |
| 74 | }, |
| 75 | /* irq's for omap16xx and omap7xx */ |
| 76 | [8] = { |
| 77 | .name = "7", |
| 78 | .start = INT_1610_DMA_CH7, |
| 79 | .flags = IORESOURCE_IRQ, |
| 80 | }, |
| 81 | [9] = { |
| 82 | .name = "8", |
| 83 | .start = INT_1610_DMA_CH8, |
| 84 | .flags = IORESOURCE_IRQ, |
| 85 | }, |
| 86 | [10] = { |
| 87 | .name = "9", |
| 88 | .start = INT_1610_DMA_CH9, |
| 89 | .flags = IORESOURCE_IRQ, |
| 90 | }, |
| 91 | [11] = { |
| 92 | .name = "10", |
| 93 | .start = INT_1610_DMA_CH10, |
| 94 | .flags = IORESOURCE_IRQ, |
| 95 | }, |
| 96 | [12] = { |
| 97 | .name = "11", |
| 98 | .start = INT_1610_DMA_CH11, |
| 99 | .flags = IORESOURCE_IRQ, |
| 100 | }, |
| 101 | [13] = { |
| 102 | .name = "12", |
| 103 | .start = INT_1610_DMA_CH12, |
| 104 | .flags = IORESOURCE_IRQ, |
| 105 | }, |
| 106 | [14] = { |
| 107 | .name = "13", |
| 108 | .start = INT_1610_DMA_CH13, |
| 109 | .flags = IORESOURCE_IRQ, |
| 110 | }, |
| 111 | [15] = { |
| 112 | .name = "14", |
| 113 | .start = INT_1610_DMA_CH14, |
| 114 | .flags = IORESOURCE_IRQ, |
| 115 | }, |
| 116 | [16] = { |
| 117 | .name = "15", |
| 118 | .start = INT_1610_DMA_CH15, |
| 119 | .flags = IORESOURCE_IRQ, |
| 120 | }, |
| 121 | [17] = { |
| 122 | .name = "16", |
| 123 | .start = INT_DMA_LCD, |
| 124 | .flags = IORESOURCE_IRQ, |
| 125 | }, |
| 126 | }; |
| 127 | |
| 128 | static int __init omap1_system_dma_init(void) |
| 129 | { |
| 130 | struct omap_system_dma_plat_info *p; |
| 131 | struct platform_device *pdev; |
| 132 | int ret; |
| 133 | |
| 134 | pdev = platform_device_alloc("omap_dma_system", 0); |
| 135 | if (!pdev) { |
| 136 | pr_err("%s: Unable to device alloc for dma\n", |
| 137 | __func__); |
| 138 | return -ENOMEM; |
| 139 | } |
| 140 | |
| 141 | ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res)); |
| 142 | if (ret) { |
| 143 | dev_err(&pdev->dev, "%s: Unable to add resources for %s%d\n", |
| 144 | __func__, pdev->name, pdev->id); |
| 145 | goto exit_device_del; |
| 146 | } |
| 147 | |
| 148 | p = kzalloc(sizeof(struct omap_system_dma_plat_info), GFP_KERNEL); |
| 149 | if (!p) { |
| 150 | dev_err(&pdev->dev, "%s: Unable to allocate 'p' for %s\n", |
| 151 | __func__, pdev->name); |
| 152 | ret = -ENOMEM; |
| 153 | goto exit_device_put; |
| 154 | } |
| 155 | |
| 156 | ret = platform_device_add_data(pdev, p, sizeof(*p)); |
| 157 | if (ret) { |
| 158 | dev_err(&pdev->dev, "%s: Unable to add resources for %s%d\n", |
| 159 | __func__, pdev->name, pdev->id); |
| 160 | goto exit_device_put; |
| 161 | } |
| 162 | |
| 163 | ret = platform_device_add(pdev); |
| 164 | if (ret) { |
| 165 | dev_err(&pdev->dev, "%s: Unable to add resources for %s%d\n", |
| 166 | __func__, pdev->name, pdev->id); |
| 167 | goto exit_device_put; |
| 168 | } |
| 169 | |
| 170 | return ret; |
| 171 | |
| 172 | exit_device_put: |
| 173 | platform_device_put(pdev); |
| 174 | exit_device_del: |
| 175 | platform_device_del(pdev); |
| 176 | |
| 177 | return ret; |
| 178 | } |
| 179 | arch_initcall(omap1_system_dma_init); |