From 871480933a1c28f8a9fed4c4d34d06c439a7a422 Mon Sep 17 00:00:00 2001 From: Srikant Patnaik Date: Sun, 11 Jan 2015 12:28:04 +0530 Subject: Moved, renamed, and deleted files The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure. --- arch/arm/mach-ux500/dma-db5500.c | 137 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 137 insertions(+) create mode 100644 arch/arm/mach-ux500/dma-db5500.c (limited to 'arch/arm/mach-ux500/dma-db5500.c') diff --git a/arch/arm/mach-ux500/dma-db5500.c b/arch/arm/mach-ux500/dma-db5500.c new file mode 100644 index 00000000..41e9470f --- /dev/null +++ b/arch/arm/mach-ux500/dma-db5500.c @@ -0,0 +1,137 @@ +/* + * Copyright (C) ST-Ericsson SA 2010 + * + * Author: Per Forlin for ST-Ericsson + * Author: Jonas Aaberg for ST-Ericsson + * Author: Rabin Vincent for ST-Ericsson + * + * License terms: GNU General Public License (GPL), version 2 + */ + +#include +#include + +#include +#include +#include + +#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, + [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, +}; + +/* 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, + [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, +}; + +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(struct device *parent) +{ + int ret; + + dma40_device.dev.parent = parent; + ret = platform_device_register(&dma40_device); + if (ret) + dev_err(&dma40_device.dev, "unable to register device: %d\n", ret); + +} -- cgit