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arch/arm/mach-ux500/dma-db5500.c
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/* * Copyright (C) ST-Ericsson SA 2010 * * Author: Per Forlin <per.forlin@stericsson.com> for ST-Ericsson * Author: Jonas Aaberg <jonas.aberg@stericsson.com> for ST-Ericsson * Author: Rabin Vincent <rabinv.vincent@stericsson.com> for ST-Ericsson * * License terms: GNU General Public License (GPL), version 2 */ #include <linux/kernel.h> #include <linux/platform_device.h> #include <plat/ste_dma40.h> #include <mach/setup.h> #include <mach/hardware.h> #include "ste-dma40-db5500.h" static struct resource dma40_resources[] = { [0] = { .start = U5500_DMA_BASE, .end = U5500_DMA_BASE + SZ_4K - 1, .flags = IORESOURCE_MEM, .name = "base", }, [1] = { .start = U5500_DMA_LCPA_BASE, .end = U5500_DMA_LCPA_BASE + 2 * SZ_1K - 1, .flags = IORESOURCE_MEM, .name = "lcpa", }, [2] = { .start = IRQ_DB5500_DMA, .end = IRQ_DB5500_DMA, .flags = IORESOURCE_IRQ } }; /* Default configuration for physical memcpy */ static struct stedma40_chan_cfg dma40_memcpy_conf_phy = { .mode = STEDMA40_MODE_PHYSICAL, .dir = STEDMA40_MEM_TO_MEM, .src_info.data_width = STEDMA40_BYTE_WIDTH, .src_info.psize = STEDMA40_PSIZE_PHY_1, .src_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL, .dst_info.data_width = STEDMA40_BYTE_WIDTH, .dst_info.psize = STEDMA40_PSIZE_PHY_1, .dst_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL, }; /* Default configuration for logical memcpy */ static struct stedma40_chan_cfg dma40_memcpy_conf_log = { .dir = STEDMA40_MEM_TO_MEM, .src_info.data_width = STEDMA40_BYTE_WIDTH, .src_info.psize = STEDMA40_PSIZE_LOG_1, .src_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL, .dst_info.data_width = STEDMA40_BYTE_WIDTH, .dst_info.psize = STEDMA40_PSIZE_LOG_1, .dst_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL, }; /* * Mapping between soruce event lines and physical device address This was * created assuming that the event line is tied to a device and therefore the * address is constant, however this is not true for at least USB, and the * values are just placeholders for USB. This table is preserved and used for * now. */ static const dma_addr_t dma40_rx_map[DB5500_DMA_NR_DEV] = { [DB5500_DMA_DEV24_SDMMC0_RX] = -1, |
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[DB5500_DMA_DEV38_USB_OTG_IEP_8] = -1, [DB5500_DMA_DEV23_USB_OTG_IEP_7_15] = -1, [DB5500_DMA_DEV22_USB_OTG_IEP_6_14] = -1, [DB5500_DMA_DEV21_USB_OTG_IEP_5_13] = -1, [DB5500_DMA_DEV20_USB_OTG_IEP_4_12] = -1, [DB5500_DMA_DEV6_USB_OTG_IEP_3_11] = -1, [DB5500_DMA_DEV5_USB_OTG_IEP_2_10] = -1, [DB5500_DMA_DEV4_USB_OTG_IEP_1_9] = -1, |
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}; /* Mapping between destination event lines and physical device address */ static const dma_addr_t dma40_tx_map[DB5500_DMA_NR_DEV] = { [DB5500_DMA_DEV24_SDMMC0_TX] = -1, |
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[DB5500_DMA_DEV38_USB_OTG_OEP_8] = -1, [DB5500_DMA_DEV23_USB_OTG_OEP_7_15] = -1, [DB5500_DMA_DEV22_USB_OTG_OEP_6_14] = -1, [DB5500_DMA_DEV21_USB_OTG_OEP_5_13] = -1, [DB5500_DMA_DEV20_USB_OTG_OEP_4_12] = -1, [DB5500_DMA_DEV6_USB_OTG_OEP_3_11] = -1, [DB5500_DMA_DEV5_USB_OTG_OEP_2_10] = -1, [DB5500_DMA_DEV4_USB_OTG_OEP_1_9] = -1, |
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}; static int dma40_memcpy_event[] = { DB5500_DMA_MEMCPY_TX_1, DB5500_DMA_MEMCPY_TX_2, DB5500_DMA_MEMCPY_TX_3, DB5500_DMA_MEMCPY_TX_4, DB5500_DMA_MEMCPY_TX_5, }; static struct stedma40_platform_data dma40_plat_data = { .dev_len = ARRAY_SIZE(dma40_rx_map), .dev_rx = dma40_rx_map, .dev_tx = dma40_tx_map, .memcpy = dma40_memcpy_event, .memcpy_len = ARRAY_SIZE(dma40_memcpy_event), .memcpy_conf_phy = &dma40_memcpy_conf_phy, .memcpy_conf_log = &dma40_memcpy_conf_log, .disabled_channels = {-1}, }; static struct platform_device dma40_device = { .dev = { .platform_data = &dma40_plat_data, }, .name = "dma40", .id = 0, .num_resources = ARRAY_SIZE(dma40_resources), .resource = dma40_resources }; void __init db5500_dma_init(void) { int ret; ret = platform_device_register(&dma40_device); if (ret) dev_err(&dma40_device.dev, "unable to register device: %d ", ret); } |