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linux/arch/arm/mach-ux500/devices-db8500.c
Lee Jones 26955c07dc dmaengine: ste_dma40: Amalgamate DMA source and destination channel numbers 
Devices which utilise DMA use the same device numbers for transmitting
and receiving. In this patch we encode the source and destination
information into one single attribute. We can subsequently exploit the
direction attribute to see which of the transfer directions are being
described. This also lessens the burden on platform data.

Cc: Dan Williams <djbw@fb.com>
Cc: Per Forlin <per.forlin@stericsson.com>
Cc: Rabin Vincent <rabin@rab.in>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-05-23 21:11:51 +02:00

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/*
* Copyright (C) ST-Ericsson SA 2010
*
* Author: Rabin Vincent <rabin.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 <linux/interrupt.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/amba/bus.h>
#include <linux/amba/pl022.h>
#include <linux/platform_data/dma-ste-dma40.h>
#include <linux/mfd/dbx500-prcmu.h>
#include "setup.h"
#include "irqs.h"
#include "db8500-regs.h"
#include "devices-db8500.h"
#include "ste-dma40-db8500.h"
static struct resource dma40_resources[] = {
[0] = {
.start = U8500_DMA_BASE,
.end = U8500_DMA_BASE + SZ_4K - 1,
.flags = IORESOURCE_MEM,
.name = "base",
},
[1] = {
.start = U8500_DMA_LCPA_BASE,
.end = U8500_DMA_LCPA_BASE + 2 * SZ_1K - 1,
.flags = IORESOURCE_MEM,
.name = "lcpa",
},
[2] = {
.start = IRQ_DB8500_DMA,
.end = IRQ_DB8500_DMA,
.flags = IORESOURCE_IRQ,
}
};
/*
* Mapping between destination event lines and physical device address.
* The event line is tied to a device and therefore the address is constant.
* When the address comes from a primecell it will be configured in runtime
* and we set the address to -1 as a placeholder.
*/
static const dma_addr_t dma40_tx_map[DB8500_DMA_NR_DEV] = {
/* MUSB - these will be runtime-reconfigured */
[DB8500_DMA_DEV39_USB_OTG_IEP_AND_OEP_8] = -1,
[DB8500_DMA_DEV16_USB_OTG_IEP_AND_OEP_7_15] = -1,
[DB8500_DMA_DEV17_USB_OTG_IEP_AND_OEP_6_14] = -1,
[DB8500_DMA_DEV18_USB_OTG_IEP_AND_OEP_5_13] = -1,
[DB8500_DMA_DEV19_USB_OTG_IEP_AND_OEP_4_12] = -1,
[DB8500_DMA_DEV36_USB_OTG_IEP_AND_OEP_3_11] = -1,
[DB8500_DMA_DEV37_USB_OTG_IEP_AND_OEP_2_10] = -1,
[DB8500_DMA_DEV38_USB_OTG_IEP_AND_OEP_1_9] = -1,
/* PrimeCells - run-time configured */
[DB8500_DMA_DEV0_SPI0] = -1,
[DB8500_DMA_DEV1_SD_MMC0] = -1,
[DB8500_DMA_DEV2_SD_MMC1] = -1,
[DB8500_DMA_DEV3_SD_MMC2] = -1,
[DB8500_DMA_DEV8_SSP0] = -1,
[DB8500_DMA_DEV9_SSP1] = -1,
[DB8500_DMA_DEV11_UART2] = -1,
[DB8500_DMA_DEV12_UART1] = -1,
[DB8500_DMA_DEV13_UART0] = -1,
[DB8500_DMA_DEV28_SD_MM2] = -1,
[DB8500_DMA_DEV29_SD_MM0] = -1,
[DB8500_DMA_DEV32_SD_MM1] = -1,
[DB8500_DMA_DEV33_SPI2] = -1,
[DB8500_DMA_DEV35_SPI1] = -1,
[DB8500_DMA_DEV40_SPI3] = -1,
[DB8500_DMA_DEV41_SD_MM3] = -1,
[DB8500_DMA_DEV42_SD_MM4] = -1,
[DB8500_DMA_DEV43_SD_MM5] = -1,
[DB8500_DMA_DEV14_MSP2] = U8500_MSP2_BASE + MSP_TX_RX_REG_OFFSET,
[DB8500_DMA_DEV30_MSP1] = U8500_MSP1_BASE + MSP_TX_RX_REG_OFFSET,
[DB8500_DMA_DEV31_MSP0_SLIM0_CH0] = U8500_MSP0_BASE + MSP_TX_RX_REG_OFFSET,
[DB8500_DMA_DEV48_CAC1] = U8500_CRYP1_BASE + CRYP1_TX_REG_OFFSET,
[DB8500_DMA_DEV50_HAC1_TX] = U8500_HASH1_BASE + HASH1_TX_REG_OFFSET,
};
/* Mapping between source event lines and physical device address */
static const dma_addr_t dma40_rx_map[DB8500_DMA_NR_DEV] = {
/* MUSB - these will be runtime-reconfigured */
[DB8500_DMA_DEV39_USB_OTG_IEP_AND_OEP_8] = -1,
[DB8500_DMA_DEV16_USB_OTG_IEP_AND_OEP_7_15] = -1,
[DB8500_DMA_DEV17_USB_OTG_IEP_AND_OEP_6_14] = -1,
[DB8500_DMA_DEV18_USB_OTG_IEP_AND_OEP_5_13] = -1,
[DB8500_DMA_DEV19_USB_OTG_IEP_AND_OEP_4_12] = -1,
[DB8500_DMA_DEV36_USB_OTG_IEP_AND_OEP_3_11] = -1,
[DB8500_DMA_DEV37_USB_OTG_IEP_AND_OEP_2_10] = -1,
[DB8500_DMA_DEV38_USB_OTG_IEP_AND_OEP_1_9] = -1,
/* PrimeCells */
[DB8500_DMA_DEV0_SPI0] = -1,
[DB8500_DMA_DEV1_SD_MMC0] = -1,
[DB8500_DMA_DEV2_SD_MMC1] = -1,
[DB8500_DMA_DEV3_SD_MMC2] = -1,
[DB8500_DMA_DEV8_SSP0] = -1,
[DB8500_DMA_DEV9_SSP1] = -1,
[DB8500_DMA_DEV11_UART2] = -1,
[DB8500_DMA_DEV12_UART1] = -1,
[DB8500_DMA_DEV13_UART0] = -1,
[DB8500_DMA_DEV28_SD_MM2] = -1,
[DB8500_DMA_DEV29_SD_MM0] = -1,
[DB8500_DMA_DEV32_SD_MM1] = -1,
[DB8500_DMA_DEV33_SPI2] = -1,
[DB8500_DMA_DEV35_SPI1] = -1,
[DB8500_DMA_DEV40_SPI3] = -1,
[DB8500_DMA_DEV41_SD_MM3] = -1,
[DB8500_DMA_DEV42_SD_MM4] = -1,
[DB8500_DMA_DEV43_SD_MM5] = -1,
[DB8500_DMA_DEV14_MSP2] = U8500_MSP2_BASE + MSP_TX_RX_REG_OFFSET,
[DB8500_DMA_DEV30_MSP3] = U8500_MSP3_BASE + MSP_TX_RX_REG_OFFSET,
[DB8500_DMA_DEV31_MSP0_SLIM0_CH0] = U8500_MSP0_BASE + MSP_TX_RX_REG_OFFSET,
[DB8500_DMA_DEV48_CAC1] = U8500_CRYP1_BASE + CRYP1_RX_REG_OFFSET,
};
static struct stedma40_platform_data dma40_plat_data = {
.dev_len = DB8500_DMA_NR_DEV,
.dev_rx = dma40_rx_map,
.dev_tx = dma40_tx_map,
.disabled_channels = {-1},
};
struct platform_device u8500_dma40_device = {
.dev = {
.platform_data = &dma40_plat_data,
},
.name = "dma40",
.id = 0,
.num_resources = ARRAY_SIZE(dma40_resources),
.resource = dma40_resources
};
struct resource keypad_resources[] = {
[0] = {
.start = U8500_SKE_BASE,
.end = U8500_SKE_BASE + SZ_4K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_DB8500_KB,
.end = IRQ_DB8500_KB,
.flags = IORESOURCE_IRQ,
},
};
struct platform_device u8500_ske_keypad_device = {
.name = "nmk-ske-keypad",
.id = -1,
.num_resources = ARRAY_SIZE(keypad_resources),
.resource = keypad_resources,
};
struct prcmu_pdata db8500_prcmu_pdata = {
.ab_platdata = &ab8500_platdata,
.ab_irq = IRQ_DB8500_AB8500,
.irq_base = IRQ_PRCMU_BASE,
.version_offset = DB8500_PRCMU_FW_VERSION_OFFSET,
.legacy_offset = DB8500_PRCMU_LEGACY_OFFSET,
};
static struct resource db8500_prcmu_res[] = {
{
.name = "prcmu",
.start = U8500_PRCMU_BASE,
.end = U8500_PRCMU_BASE + SZ_8K - 1,
.flags = IORESOURCE_MEM,
},
{
.name = "prcmu-tcdm",
.start = U8500_PRCMU_TCDM_BASE,
.end = U8500_PRCMU_TCDM_BASE + SZ_4K - 1,
.flags = IORESOURCE_MEM,
},
{
.name = "irq",
.start = IRQ_DB8500_PRCMU1,
.end = IRQ_DB8500_PRCMU1,
.flags = IORESOURCE_IRQ,
},
{
.name = "prcmu-tcpm",
.start = U8500_PRCMU_TCPM_BASE,
.end = U8500_PRCMU_TCPM_BASE + SZ_4K - 1,
.flags = IORESOURCE_MEM,
},
};
struct platform_device db8500_prcmu_device = {
.name = "db8500-prcmu",
.resource = db8500_prcmu_res,
.num_resources = ARRAY_SIZE(db8500_prcmu_res),
.dev = {
.platform_data = &db8500_prcmu_pdata,
},
};
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