1 /* linux/arch/arm/mach-exynos4/dma.c
3 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
4 * http://www.samsung.com
6 * Copyright (C) 2010 Samsung Electronics Co. Ltd.
7 * Jaswinder Singh <jassi.brar@samsung.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #include <linux/dma-mapping.h>
25 #include <linux/amba/bus.h>
26 #include <linux/amba/pl330.h>
30 #include <plat/devs.h>
31 #include <plat/irqs.h>
35 #include <mach/irqs.h>
38 static u64 dma_dmamask = DMA_BIT_MASK(32);
40 static u8 exynos4210_pdma0_peri[] = {
73 static u8 exynos4212_pdma0_peri[] = {
108 struct dma_pl330_platdata exynos4_pdma0_pdata;
110 static AMBA_AHB_DEVICE(exynos4_pdma0, "dma-pl330.0", 0x00041330,
111 EXYNOS4_PA_PDMA0, {EXYNOS4_IRQ_PDMA0}, &exynos4_pdma0_pdata);
113 static u8 exynos4210_pdma1_peri[] = {
141 static u8 exynos4212_pdma1_peri[] = {
167 DMACH_SLIMBUS0AUX_RX,
168 DMACH_SLIMBUS0AUX_TX,
174 static struct dma_pl330_platdata exynos4_pdma1_pdata;
176 static AMBA_AHB_DEVICE(exynos4_pdma1, "dma-pl330.1", 0x00041330,
177 EXYNOS4_PA_PDMA1, {EXYNOS4_IRQ_PDMA1}, &exynos4_pdma1_pdata);
179 static u8 mdma_peri[] = {
190 static struct dma_pl330_platdata exynos4_mdma1_pdata = {
191 .nr_valid_peri = ARRAY_SIZE(mdma_peri),
192 .peri_id = mdma_peri,
195 static AMBA_AHB_DEVICE(exynos4_mdma1, "dma-pl330.2", 0x00041330,
196 EXYNOS4_PA_MDMA1, {EXYNOS4_IRQ_MDMA1}, &exynos4_mdma1_pdata);
198 static int __init exynos4_dma_init(void)
200 if (of_have_populated_dt())
203 if (soc_is_exynos4210()) {
204 exynos4_pdma0_pdata.nr_valid_peri =
205 ARRAY_SIZE(exynos4210_pdma0_peri);
206 exynos4_pdma0_pdata.peri_id = exynos4210_pdma0_peri;
207 exynos4_pdma1_pdata.nr_valid_peri =
208 ARRAY_SIZE(exynos4210_pdma1_peri);
209 exynos4_pdma1_pdata.peri_id = exynos4210_pdma1_peri;
210 } else if (soc_is_exynos4212() || soc_is_exynos4412()) {
211 exynos4_pdma0_pdata.nr_valid_peri =
212 ARRAY_SIZE(exynos4212_pdma0_peri);
213 exynos4_pdma0_pdata.peri_id = exynos4212_pdma0_peri;
214 exynos4_pdma1_pdata.nr_valid_peri =
215 ARRAY_SIZE(exynos4212_pdma1_peri);
216 exynos4_pdma1_pdata.peri_id = exynos4212_pdma1_peri;
219 dma_cap_set(DMA_SLAVE, exynos4_pdma0_pdata.cap_mask);
220 dma_cap_set(DMA_CYCLIC, exynos4_pdma0_pdata.cap_mask);
221 amba_device_register(&exynos4_pdma0_device, &iomem_resource);
223 dma_cap_set(DMA_SLAVE, exynos4_pdma1_pdata.cap_mask);
224 dma_cap_set(DMA_CYCLIC, exynos4_pdma1_pdata.cap_mask);
225 amba_device_register(&exynos4_pdma1_device, &iomem_resource);
227 dma_cap_set(DMA_MEMCPY, exynos4_mdma1_pdata.cap_mask);
228 amba_device_register(&exynos4_mdma1_device, &iomem_resource);
232 arch_initcall(exynos4_dma_init);