DMAENGINE: DMA40 U8500 platform configuration

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>

6 files changed, 283 insertions, 1 deletions

diff --git a/arch/arm/mach-ux500/clock.c b/arch/arm/mach-ux500/clock.c
index 1b2c9890e8b4..6544855af2f1 100644
--- a/arch/arm/mach-ux500/clock.c
+++ b/arch/arm/mach-ux500/clock.c
@@ -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),
 };
diff --git a/arch/arm/mach-ux500/cpu-db8500.c b/arch/arm/mach-ux500/cpu-db8500.c
index d04299f3b6b5..f21c444edd99 100644
--- a/arch/arm/mach-ux500/cpu-db8500.c
+++ b/arch/arm/mach-ux500/cpu-db8500.c
@@ -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 */
@@ -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));
 
diff --git a/arch/arm/mach-ux500/devices-db8500.c b/arch/arm/mach-ux500/devices-db8500.c
index 20334236afce..822903421943 100644
--- a/arch/arm/mach-ux500/devices-db8500.c
+++ b/arch/arm/mach-ux500/devices-db8500.c
@@ -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 */
@@ -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;
+}
diff --git a/arch/arm/mach-ux500/include/mach/db8500-regs.h b/arch/arm/mach-ux500/include/mach/db8500-regs.h
index 9169e1e382a3..85fc6a80b386 100644
--- a/arch/arm/mach-ux500/include/mach/db8500-regs.h
+++ b/arch/arm/mach-ux500/include/mach/db8500-regs.h
@@ -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)
diff --git a/arch/arm/mach-ux500/include/mach/devices.h b/arch/arm/mach-ux500/include/mach/devices.h
index 0422af00a56e..c2b2f2574947 100644
--- a/arch/arm/mach-ux500/include/mach/devices.h
+++ b/arch/arm/mach-ux500/include/mach/devices.h
@@ -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
diff --git a/arch/arm/mach-ux500/ste-dma40-db8500.h b/arch/arm/mach-ux500/ste-dma40-db8500.h
new file mode 100644
index 000000000000..e7016278dfa9
--- /dev/null
+++ b/arch/arm/mach-ux500/ste-dma40-db8500.h
@@ -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