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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,
};
/* 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,
};
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\n", ret);
}
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