Skip to content

Commit

Permalink
DMAENGINE: DMA40 U8500 platform configuration
Browse files Browse the repository at this point in the history 
This completes the DMA40 support with the platform-specific
configuration for U8500/DB8500.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Acked-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Reviewed-by: Alessandro Rubini <rubini@unipv.it>
Cc: STEricsson_nomadik_linux@list.st.com
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
[fixed up dma40_{tx|rx}_map declaration/initialization]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
  • Loading branch information
Linus Walleij authored and Dan Williams committed May 27, 2010
1 parent b3040e4 commit 7b8ddb0
Show file tree
Hide file tree
Showing 6 changed files with 283 additions and 1 deletion.
2 changes: 1 addition & 1 deletion arch/arm/mach-ux500/clock.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -411,7 +411,7 @@ static struct clk_lookup u8500_common_clks[] = {
CLK(apetraceclk, "apetrace", NULL),
CLK(mcdeclk, "mcde", NULL),
CLK(ipi2clk, "ipi2", NULL),
CLK(dmaclk, "dma40", NULL),
CLK(dmaclk, "dma40.0", NULL),
CLK(b2r2clk, "b2r2", NULL),
CLK(tvclk, "tv", NULL),
};
Expand Down
4 changes: 4 additions & 0 deletions arch/arm/mach-ux500/cpu-db8500.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,7 @@ static struct platform_device *platform_devs[] __initdata = {
&u8500_gpio_devs[6],
&u8500_gpio_devs[7],
&u8500_gpio_devs[8],
&u8500_dma40_device,
};

/* minimum static i/o mapping required to boot U8500 platforms */
Expand Down Expand Up @@ -71,6 +72,9 @@ void __init u8500_init_devices(void)
{
ux500_init_devices();

if (cpu_is_u8500ed())
dma40_u8500ed_fixup();

/* Register the platform devices */
platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));

Expand Down
109 changes: 109 additions & 0 deletions arch/arm/mach-ux500/devices-db8500.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -12,9 +12,13 @@
#include <linux/gpio.h>
#include <linux/amba/bus.h>

#include <plat/ste_dma40.h>

#include <mach/hardware.h>
#include <mach/setup.h>

#include "ste-dma40-db8500.h"

static struct nmk_gpio_platform_data u8500_gpio_data[] = {
GPIO_DATA("GPIO-0-31", 0),
GPIO_DATA("GPIO-32-63", 32), /* 37..63 not routed to pin */
Expand Down Expand Up @@ -105,3 +109,108 @@ struct platform_device u8500_i2c4_device = {
.resource = u8500_i2c4_resources,
.num_resources = ARRAY_SIZE(u8500_i2c4_resources),
};

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 + SZ_4K - 1,
.flags = IORESOURCE_MEM,
.name = "lcpa",
},
[2] = {
.start = U8500_DMA_LCLA_BASE,
.end = U8500_DMA_LCLA_BASE + 16 * 1024 - 1,
.flags = IORESOURCE_MEM,
.name = "lcla",
},
[3] = {
.start = IRQ_DMA,
.end = IRQ_DMA,
.flags = IORESOURCE_IRQ}
};

/* Default configuration for physcial memcpy */
struct stedma40_chan_cfg dma40_memcpy_conf_phy = {
.channel_type = (STEDMA40_CHANNEL_IN_PHY_MODE |
STEDMA40_LOW_PRIORITY_CHANNEL |
STEDMA40_PCHAN_BASIC_MODE),
.dir = STEDMA40_MEM_TO_MEM,

.src_info.endianess = STEDMA40_LITTLE_ENDIAN,
.src_info.data_width = STEDMA40_BYTE_WIDTH,
.src_info.psize = STEDMA40_PSIZE_PHY_1,

.dst_info.endianess = STEDMA40_LITTLE_ENDIAN,
.dst_info.data_width = STEDMA40_BYTE_WIDTH,
.dst_info.psize = STEDMA40_PSIZE_PHY_1,

};
/* Default configuration for logical memcpy */
struct stedma40_chan_cfg dma40_memcpy_conf_log = {
.channel_type = (STEDMA40_CHANNEL_IN_LOG_MODE |
STEDMA40_LOW_PRIORITY_CHANNEL |
STEDMA40_LCHAN_SRC_LOG_DST_LOG |
STEDMA40_NO_TIM_FOR_LINK),
.dir = STEDMA40_MEM_TO_MEM,

.src_info.endianess = STEDMA40_LITTLE_ENDIAN,
.src_info.data_width = STEDMA40_BYTE_WIDTH,
.src_info.psize = STEDMA40_PSIZE_LOG_1,

.dst_info.endianess = STEDMA40_LITTLE_ENDIAN,
.dst_info.data_width = STEDMA40_BYTE_WIDTH,
.dst_info.psize = STEDMA40_PSIZE_LOG_1,

};

/*
* Mapping between destination event lines and physical device address.
* The event line is tied to a device and therefor the address is constant.
*/
static const dma_addr_t dma40_tx_map[STEDMA40_NR_DEV];

/* Mapping between source event lines and physical device address */
static const dma_addr_t dma40_rx_map[STEDMA40_NR_DEV];

/* Reserved event lines for memcpy only */
static int dma40_memcpy_event[] = {
STEDMA40_MEMCPY_TX_1,
STEDMA40_MEMCPY_TX_2,
STEDMA40_MEMCPY_TX_3,
STEDMA40_MEMCPY_TX_4,
};

static struct stedma40_platform_data dma40_plat_data = {
.dev_len = STEDMA40_NR_DEV,
.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,
.llis_per_log = 8,
};

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
};

void dma40_u8500ed_fixup(void)
{
dma40_plat_data.memcpy = NULL;
dma40_plat_data.memcpy_len = 0;
dma40_resources[0].start = U8500_DMA_BASE_ED;
dma40_resources[0].end = U8500_DMA_BASE_ED + SZ_4K - 1;
}
12 changes: 12 additions & 0 deletions arch/arm/mach-ux500/include/mach/db8500-regs.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,18 @@
#ifndef __MACH_DB8500_REGS_H
#define __MACH_DB8500_REGS_H

/* Base address and bank offsets for ESRAM */
#define U8500_ESRAM_BASE 0x40000000
#define U8500_ESRAM_BANK_SIZE 0x00020000
#define U8500_ESRAM_BANK0 U8500_ESRAM_BASE
#define U8500_ESRAM_BANK1 (U8500_ESRAM_BASE + U8500_ESRAM_BANK_SIZE)
#define U8500_ESRAM_BANK2 (U8500_ESRAM_BANK1 + U8500_ESRAM_BANK_SIZE)
#define U8500_ESRAM_BANK3 (U8500_ESRAM_BANK2 + U8500_ESRAM_BANK_SIZE)
#define U8500_ESRAM_BANK4 (U8500_ESRAM_BANK3 + U8500_ESRAM_BANK_SIZE)
/* Use bank 4 for DMA LCLA and LCPA */
#define U8500_DMA_LCLA_BASE U8500_ESRAM_BANK4
#define U8500_DMA_LCPA_BASE (U8500_ESRAM_BANK4 + 0x4000)

#define U8500_PER3_BASE 0x80000000
#define U8500_STM_BASE 0x80100000
#define U8500_STM_REG_BASE (U8500_STM_BASE + 0xF000)
Expand Down
3 changes: 3 additions & 0 deletions arch/arm/mach-ux500/include/mach/devices.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -25,5 +25,8 @@ extern struct platform_device ux500_i2c3_device;

extern struct platform_device u8500_i2c0_device;
extern struct platform_device u8500_i2c4_device;
extern struct platform_device u8500_dma40_device;

void dma40_u8500ed_fixup(void);

#endif
154 changes: 154 additions & 0 deletions arch/arm/mach-ux500/ste-dma40-db8500.h
View file
Original file line number Diff line number Diff line change
@@ -0,0 +1,154 @@
/*
* arch/arm/mach-ux500/ste_dma40_db8500.h
* DB8500-SoC-specific configuration for DMA40
*
* Copyright (C) ST-Ericsson 2007-2010
* License terms: GNU General Public License (GPL) version 2
* Author: Per Friden <per.friden@stericsson.com>
* Author: Jonas Aaberg <jonas.aberg@stericsson.com>
*/
#ifndef STE_DMA40_DB8500_H
#define STE_DMA40_DB8500_H

#define STEDMA40_NR_DEV 64

enum dma_src_dev_type {
STEDMA40_DEV_SPI0_RX = 0,
STEDMA40_DEV_SD_MMC0_RX = 1,
STEDMA40_DEV_SD_MMC1_RX = 2,
STEDMA40_DEV_SD_MMC2_RX = 3,
STEDMA40_DEV_I2C1_RX = 4,
STEDMA40_DEV_I2C3_RX = 5,
STEDMA40_DEV_I2C2_RX = 6,
STEDMA40_DEV_I2C4_RX = 7, /* Only on V1 */
STEDMA40_DEV_SSP0_RX = 8,
STEDMA40_DEV_SSP1_RX = 9,
STEDMA40_DEV_MCDE_RX = 10,
STEDMA40_DEV_UART2_RX = 11,
STEDMA40_DEV_UART1_RX = 12,
STEDMA40_DEV_UART0_RX = 13,
STEDMA40_DEV_MSP2_RX = 14,
STEDMA40_DEV_I2C0_RX = 15,
STEDMA40_DEV_USB_OTG_IEP_8 = 16,
STEDMA40_DEV_USB_OTG_IEP_1_9 = 17,
STEDMA40_DEV_USB_OTG_IEP_2_10 = 18,
STEDMA40_DEV_USB_OTG_IEP_3_11 = 19,
STEDMA40_DEV_SLIM0_CH0_RX_HSI_RX_CH0 = 20,
STEDMA40_DEV_SLIM0_CH1_RX_HSI_RX_CH1 = 21,
STEDMA40_DEV_SLIM0_CH2_RX_HSI_RX_CH2 = 22,
STEDMA40_DEV_SLIM0_CH3_RX_HSI_RX_CH3 = 23,
STEDMA40_DEV_SRC_SXA0_RX_TX = 24,
STEDMA40_DEV_SRC_SXA1_RX_TX = 25,
STEDMA40_DEV_SRC_SXA2_RX_TX = 26,
STEDMA40_DEV_SRC_SXA3_RX_TX = 27,
STEDMA40_DEV_SD_MM2_RX = 28,
STEDMA40_DEV_SD_MM0_RX = 29,
STEDMA40_DEV_MSP1_RX = 30,
/*
* This channel is either SlimBus or MSP,
* never both at the same time.
*/
STEDMA40_SLIM0_CH0_RX = 31,
STEDMA40_DEV_MSP0_RX = 31,
STEDMA40_DEV_SD_MM1_RX = 32,
STEDMA40_DEV_SPI2_RX = 33,
STEDMA40_DEV_I2C3_RX2 = 34,
STEDMA40_DEV_SPI1_RX = 35,
STEDMA40_DEV_USB_OTG_IEP_4_12 = 36,
STEDMA40_DEV_USB_OTG_IEP_5_13 = 37,
STEDMA40_DEV_USB_OTG_IEP_6_14 = 38,
STEDMA40_DEV_USB_OTG_IEP_7_15 = 39,
STEDMA40_DEV_SPI3_RX = 40,
STEDMA40_DEV_SD_MM3_RX = 41,
STEDMA40_DEV_SD_MM4_RX = 42,
STEDMA40_DEV_SD_MM5_RX = 43,
STEDMA40_DEV_SRC_SXA4_RX_TX = 44,
STEDMA40_DEV_SRC_SXA5_RX_TX = 45,
STEDMA40_DEV_SRC_SXA6_RX_TX = 46,
STEDMA40_DEV_SRC_SXA7_RX_TX = 47,
STEDMA40_DEV_CAC1_RX = 48,
/* RX channels 49 and 50 are unused */
STEDMA40_DEV_MSHC_RX = 51,
STEDMA40_DEV_SLIM1_CH0_RX_HSI_RX_CH4 = 52,
STEDMA40_DEV_SLIM1_CH1_RX_HSI_RX_CH5 = 53,
STEDMA40_DEV_SLIM1_CH2_RX_HSI_RX_CH6 = 54,
STEDMA40_DEV_SLIM1_CH3_RX_HSI_RX_CH7 = 55,
/* RX channels 56 thru 60 are unused */
STEDMA40_DEV_CAC0_RX = 61,
/* RX channels 62 and 63 are unused */
};

enum dma_dest_dev_type {
STEDMA40_DEV_SPI0_TX = 0,
STEDMA40_DEV_SD_MMC0_TX = 1,
STEDMA40_DEV_SD_MMC1_TX = 2,
STEDMA40_DEV_SD_MMC2_TX = 3,
STEDMA40_DEV_I2C1_TX = 4,
STEDMA40_DEV_I2C3_TX = 5,
STEDMA40_DEV_I2C2_TX = 6,
STEDMA50_DEV_I2C4_TX = 7, /* Only on V1 */
STEDMA40_DEV_SSP0_TX = 8,
STEDMA40_DEV_SSP1_TX = 9,
/* TX channel 10 is unused */
STEDMA40_DEV_UART2_TX = 11,
STEDMA40_DEV_UART1_TX = 12,
STEDMA40_DEV_UART0_TX= 13,
STEDMA40_DEV_MSP2_TX = 14,
STEDMA40_DEV_I2C0_TX = 15,
STEDMA40_DEV_USB_OTG_OEP_8 = 16,
STEDMA40_DEV_USB_OTG_OEP_1_9 = 17,
STEDMA40_DEV_USB_OTG_OEP_2_10= 18,
STEDMA40_DEV_USB_OTG_OEP_3_11 = 19,
STEDMA40_DEV_SLIM0_CH0_TX_HSI_TX_CH0 = 20,
STEDMA40_DEV_SLIM0_CH1_TX_HSI_TX_CH1 = 21,
STEDMA40_DEV_SLIM0_CH2_TX_HSI_TX_CH2 = 22,
STEDMA40_DEV_SLIM0_CH3_TX_HSI_TX_CH3 = 23,
STEDMA40_DEV_DST_SXA0_RX_TX = 24,
STEDMA40_DEV_DST_SXA1_RX_TX = 25,
STEDMA40_DEV_DST_SXA2_RX_TX = 26,
STEDMA40_DEV_DST_SXA3_RX_TX = 27,
STEDMA40_DEV_SD_MM2_TX = 28,
STEDMA40_DEV_SD_MM0_TX = 29,
STEDMA40_DEV_MSP1_TX = 30,
/*
* This channel is either SlimBus or MSP,
* never both at the same time.
*/
STEDMA40_SLIM0_CH0_TX = 31,
STEDMA40_DEV_MSP0_TX = 31,
STEDMA40_DEV_SD_MM1_TX = 32,
STEDMA40_DEV_SPI2_TX = 33,
/* Secondary I2C3 channel */
STEDMA40_DEV_I2C3_TX2 = 34,
STEDMA40_DEV_SPI1_TX = 35,
STEDMA40_DEV_USB_OTG_OEP_4_12 = 36,
STEDMA40_DEV_USB_OTG_OEP_5_13 = 37,
STEDMA40_DEV_USB_OTG_OEP_6_14 = 38,
STEDMA40_DEV_USB_OTG_OEP_7_15 = 39,
STEDMA40_DEV_SPI3_TX = 40,
STEDMA40_DEV_SD_MM3_TX = 41,
STEDMA40_DEV_SD_MM4_TX = 42,
STEDMA40_DEV_SD_MM5_TX = 43,
STEDMA40_DEV_DST_SXA4_RX_TX = 44,
STEDMA40_DEV_DST_SXA5_RX_TX = 45,
STEDMA40_DEV_DST_SXA6_RX_TX = 46,
STEDMA40_DEV_DST_SXA7_RX_TX = 47,
STEDMA40_DEV_CAC1_TX = 48,
STEDMA40_DEV_CAC1_TX_HAC1_TX = 49,
STEDMA40_DEV_HAC1_TX = 50,
STEDMA40_MEMXCPY_TX_0 = 51,
STEDMA40_DEV_SLIM1_CH0_TX_HSI_TX_CH4 = 52,
STEDMA40_DEV_SLIM1_CH1_TX_HSI_TX_CH5 = 53,
STEDMA40_DEV_SLIM1_CH2_TX_HSI_TX_CH6 = 54,
STEDMA40_DEV_SLIM1_CH3_TX_HSI_TX_CH7 = 55,
STEDMA40_MEMCPY_TX_1 = 56,
STEDMA40_MEMCPY_TX_2 = 57,
STEDMA40_MEMCPY_TX_3 = 58,
STEDMA40_MEMCPY_TX_4 = 59,
STEDMA40_MEMCPY_TX_5 = 60,
STEDMA40_DEV_CAC0_TX = 61,
STEDMA40_DEV_CAC0_TX_HAC0_TX = 62,
STEDMA40_DEV_HAC0_TX = 63,
};

#endif

0 comments on commit 7b8ddb0

Please sign in to comment.