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Date: Thu, 8 Apr 2010 01:14:30 +0200
From: Linus Walleij <linus.walleij@...ricsson.com>
To: akpm@...ux-foundation.org,
Russell King - ARM Linux <linux@....linux.org.uk>,
Grant Likely <grant.likely@...retlab.ca>,
Dan Williams <dan.j.williams@...el.com>
Cc: linux-arm-kernel@...ts.infradead.org, linux-mmc@...r.kernel.org,
STEricsson_nomadik_linux@...t.st.com, linux-kernel@...r.kernel.org,
Linus Walleij <linus.walleij@...ricsson.com>
Subject: [PATCH 11/11] ARM: config Ux500 PL011 PL022 for DMA v1
This will configure the platform data for the PL011 and PL022
PrimeCells found in the Ux500 to use DMA with the generic
PrimeCell DMA engine.
Signed-off-by: Linus Walleij <linus.walleij@...ricsson.com>
---
arch/arm/mach-ux500/board-mop500.c | 236 +++++++++++++++++++++++++++++------
1 files changed, 195 insertions(+), 41 deletions(-)
diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c
index 6e95678..2cad265 100644
--- a/arch/arm/mach-ux500/board-mop500.c
+++ b/arch/arm/mach-ux500/board-mop500.c
@@ -14,7 +14,9 @@
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/amba/bus.h>
+#include <linux/amba/dma.h>
#include <linux/amba/pl022.h>
+#include <linux/amba/serial.h>
#include <linux/spi/spi.h>
#include <asm/mach-types.h>
@@ -31,21 +33,137 @@
#define __MEM_4K_RESOURCE(x) \
.res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM}
+#ifdef CONFIG_STE_DMA40
+struct stedma40_chan_cfg uart0_dma_cfg_rx = {
+ .channel_type = (STEDMA40_CHANNEL_IN_LOG_MODE|
+ STEDMA40_LCHAN_SRC_LOG_DST_LOG|STEDMA40_NO_TIM_FOR_LINK|
+ STEDMA40_LOW_PRIORITY_CHANNEL),
+ .dir = STEDMA40_PERIPH_TO_MEM,
+ .src_dev_type = STEDMA40_DEV_UART0_RX,
+ .dst_dev_type = STEDMA40_DEV_DST_MEMORY,
+ .src_info.endianess = STEDMA40_LITTLE_ENDIAN,
+ .src_info.data_width = STEDMA40_BYTE_WIDTH,
+ .dst_info.endianess = STEDMA40_LITTLE_ENDIAN,
+ .dst_info.data_width = STEDMA40_BYTE_WIDTH,
+};
+
+static struct stedma40_chan_cfg uart0_dma_cfg_tx = {
+ .channel_type = (STEDMA40_CHANNEL_IN_LOG_MODE|
+ STEDMA40_LCHAN_SRC_LOG_DST_LOG|STEDMA40_NO_TIM_FOR_LINK|
+ STEDMA40_LOW_PRIORITY_CHANNEL),
+ .dir = STEDMA40_MEM_TO_PERIPH,
+ .src_dev_type = STEDMA40_DEV_SRC_MEMORY,
+ .dst_dev_type = STEDMA40_DEV_UART0_TX,
+ .src_info.endianess = STEDMA40_LITTLE_ENDIAN,
+ .src_info.data_width = STEDMA40_BYTE_WIDTH,
+ .dst_info.endianess = STEDMA40_LITTLE_ENDIAN,
+ .dst_info.data_width = STEDMA40_BYTE_WIDTH,
+};
+
+struct stedma40_chan_cfg uart1_dma_cfg_rx = {
+ .channel_type = (STEDMA40_CHANNEL_IN_LOG_MODE|
+ STEDMA40_LCHAN_SRC_LOG_DST_LOG|STEDMA40_NO_TIM_FOR_LINK|
+ STEDMA40_LOW_PRIORITY_CHANNEL),
+ .dir = STEDMA40_PERIPH_TO_MEM,
+ .src_dev_type = STEDMA40_DEV_UART1_RX,
+ .dst_dev_type = STEDMA40_DEV_DST_MEMORY,
+ .src_info.endianess = STEDMA40_LITTLE_ENDIAN,
+ .src_info.data_width = STEDMA40_BYTE_WIDTH,
+ .dst_info.endianess = STEDMA40_LITTLE_ENDIAN,
+ .dst_info.data_width = STEDMA40_BYTE_WIDTH,
+};
+
+static struct stedma40_chan_cfg uart1_dma_cfg_tx = {
+ .channel_type = (STEDMA40_CHANNEL_IN_LOG_MODE|
+ STEDMA40_LCHAN_SRC_LOG_DST_LOG|STEDMA40_NO_TIM_FOR_LINK|
+ STEDMA40_LOW_PRIORITY_CHANNEL),
+ .dir = STEDMA40_MEM_TO_PERIPH,
+ .src_dev_type = STEDMA40_DEV_SRC_MEMORY,
+ .dst_dev_type = STEDMA40_DEV_UART1_TX,
+ .src_info.endianess = STEDMA40_LITTLE_ENDIAN,
+ .src_info.data_width = STEDMA40_BYTE_WIDTH,
+ .dst_info.endianess = STEDMA40_LITTLE_ENDIAN,
+ .dst_info.data_width = STEDMA40_BYTE_WIDTH,
+};
+
+struct stedma40_chan_cfg uart2_dma_cfg_rx = {
+ .channel_type = (STEDMA40_CHANNEL_IN_LOG_MODE|
+ STEDMA40_LCHAN_SRC_LOG_DST_LOG|STEDMA40_NO_TIM_FOR_LINK|
+ STEDMA40_LOW_PRIORITY_CHANNEL),
+ .dir = STEDMA40_PERIPH_TO_MEM,
+ .src_dev_type = STEDMA40_DEV_UART2_RX,
+ .dst_dev_type = STEDMA40_DEV_DST_MEMORY,
+ .src_info.endianess = STEDMA40_LITTLE_ENDIAN,
+ .src_info.data_width = STEDMA40_BYTE_WIDTH,
+ .dst_info.endianess = STEDMA40_LITTLE_ENDIAN,
+ .dst_info.data_width = STEDMA40_BYTE_WIDTH,
+};
+
+static struct stedma40_chan_cfg uart2_dma_cfg_tx = {
+ .channel_type = (STEDMA40_CHANNEL_IN_LOG_MODE|
+ STEDMA40_LCHAN_SRC_LOG_DST_LOG|STEDMA40_NO_TIM_FOR_LINK|
+ STEDMA40_LOW_PRIORITY_CHANNEL),
+ .dir = STEDMA40_MEM_TO_PERIPH,
+ .src_dev_type = STEDMA40_DEV_SRC_MEMORY,
+ .dst_dev_type = STEDMA40_DEV_UART2_TX,
+ .src_info.endianess = STEDMA40_LITTLE_ENDIAN,
+ .src_info.data_width = STEDMA40_BYTE_WIDTH,
+ .dst_info.endianess = STEDMA40_LITTLE_ENDIAN,
+ .dst_info.data_width = STEDMA40_BYTE_WIDTH,
+};
+#endif
+
+static struct amba_pl011_data uart0_plat = {
+#ifdef CONFIG_STE_DMA40
+ .dma_filter = stedma40_filter,
+ .dma_rx_param = &uart0_dma_cfg_rx,
+ .dma_tx_param = &uart0_dma_cfg_tx,
+#endif
+};
+
+static struct amba_pl011_data uart1_plat = {
+#ifdef CONFIG_STE_DMA40
+ .dma_filter = stedma40_filter,
+ .dma_rx_param = &uart1_dma_cfg_rx,
+ .dma_tx_param = &uart1_dma_cfg_tx,
+#endif
+};
+
+static struct amba_pl011_data uart2_plat = {
+#ifdef CONFIG_STE_DMA40
+ .dma_filter = stedma40_filter,
+ .dma_rx_param = &uart2_dma_cfg_rx,
+ .dma_tx_param = &uart2_dma_cfg_tx,
+#endif
+};
+
/* These are active devices on this board */
static struct amba_device uart0_device = {
- .dev = { .init_name = "uart0" },
+ .dev = {
+ .coherent_dma_mask = ~0,
+ .init_name = "uart0",
+ .platform_data = &uart0_plat,
+ },
__MEM_4K_RESOURCE(U8500_UART0_BASE),
.irq = {IRQ_UART0, NO_IRQ},
};
static struct amba_device uart1_device = {
- .dev = { .init_name = "uart1" },
+ .dev = {
+ .coherent_dma_mask = ~0,
+ .init_name = "uart1",
+ .platform_data = &uart1_plat,
+ },
__MEM_4K_RESOURCE(U8500_UART1_BASE),
.irq = {IRQ_UART1, NO_IRQ},
};
static struct amba_device uart2_device = {
- .dev = { .init_name = "uart2" },
+ .dev = {
+ .coherent_dma_mask = ~0,
+ .init_name = "uart2",
+ .platform_data = &uart2_plat,
+ },
__MEM_4K_RESOURCE(U8500_UART2_BASE),
.irq = {IRQ_UART2, NO_IRQ},
};
@@ -84,10 +202,44 @@ static struct spi_board_info u8500_spi_devices[] = {
},
};
+#ifdef CONFIG_STE_DMA40
+struct stedma40_chan_cfg ssp0_dma_cfg_rx = {
+ .channel_type = (STEDMA40_CHANNEL_IN_LOG_MODE|
+ STEDMA40_LCHAN_SRC_LOG_DST_LOG|STEDMA40_NO_TIM_FOR_LINK|
+ STEDMA40_LOW_PRIORITY_CHANNEL),
+ .dir = STEDMA40_PERIPH_TO_MEM,
+ .src_dev_type = STEDMA40_DEV_SSP0_RX,
+ .dst_dev_type = STEDMA40_DEV_DST_MEMORY,
+ .src_info.endianess = STEDMA40_LITTLE_ENDIAN,
+ .src_info.data_width = STEDMA40_BYTE_WIDTH,
+ .dst_info.endianess = STEDMA40_LITTLE_ENDIAN,
+ .dst_info.data_width = STEDMA40_BYTE_WIDTH,
+};
+
+static struct stedma40_chan_cfg ssp0_dma_cfg_tx = {
+ .channel_type = (STEDMA40_CHANNEL_IN_LOG_MODE|
+ STEDMA40_LCHAN_SRC_LOG_DST_LOG|STEDMA40_NO_TIM_FOR_LINK|
+ STEDMA40_LOW_PRIORITY_CHANNEL),
+ .dir = STEDMA40_MEM_TO_PERIPH,
+ .src_dev_type = STEDMA40_DEV_SRC_MEMORY,
+ .dst_dev_type = STEDMA40_DEV_SSP0_TX,
+ .src_info.endianess = STEDMA40_LITTLE_ENDIAN,
+ .src_info.data_width = STEDMA40_BYTE_WIDTH,
+ .dst_info.endianess = STEDMA40_LITTLE_ENDIAN,
+ .dst_info.data_width = STEDMA40_BYTE_WIDTH,
+};
+#endif
+
static struct pl022_ssp_controller ssp0_platform_data = {
.bus_id = 0,
- /* pl022 not yet supports dma */
+#ifdef CONFIG_STE_DMA40
+ .enable_dma = 1,
+ .dma_filter = stedma40_filter,
+ .dma_rx_param = &ssp0_dma_cfg_rx,
+ .dma_tx_param = &ssp0_dma_cfg_tx,
+#else
.enable_dma = 0,
+#endif
/* on this platform, gpio 31,142,144,214 &
* 224 are connected as chip selects
*/
@@ -247,21 +399,23 @@ struct stedma40_chan_cfg dma40_memcpy_conf_log = {
/*
* Mapping between destination event lines and physical device address.
- * The event line is tied to a device and therefor the address is constant.
+ * 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.
*/
const static dma_addr_t dma40_tx_map[STEDMA40_DEV_MAX] = {
- [STEDMA40_DEV_SPI0_TX] = 0,
- [STEDMA40_DEV_SD_MMC0_TX] = 0,
- [STEDMA40_DEV_SD_MMC1_TX] = 0,
- [STEDMA40_DEV_SD_MMC2_TX] = 0,
+ [STEDMA40_DEV_SPI0_TX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_SD_MMC0_TX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_SD_MMC1_TX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_SD_MMC2_TX] = -1, /* PrimeCell DMA */
[STEDMA40_DEV_I2C1_TX] = 0,
[STEDMA40_DEV_I2C3_TX] = 0,
[STEDMA40_DEV_I2C2_TX] = 0,
- [STEDMA40_DEV_SSP0_TX] = 0,
- [STEDMA40_DEV_SSP1_TX] = 0,
- [STEDMA40_DEV_UART2_TX] = 0,
- [STEDMA40_DEV_UART1_TX] = 0,
- [STEDMA40_DEV_UART0_TX] = 0,
+ [STEDMA40_DEV_SSP0_TX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_SSP1_TX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_UART2_TX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_UART1_TX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_UART0_TX] = -1, /* PrimeCell DMA */
[STEDMA40_DEV_MSP2_TX] = 0,
[STEDMA40_DEV_I2C0_TX] = 0,
[STEDMA40_DEV_USB_OTG_OEP_8] = 0,
@@ -276,23 +430,23 @@ const static dma_addr_t dma40_tx_map[STEDMA40_DEV_MAX] = {
[STEDMA40_DEV_DST_SXA1_RX_TX] = 0,
[STEDMA40_DEV_DST_SXA2_RX_TX] = 0,
[STEDMA40_DEV_DST_SXA3_RX_TX] = 0,
- [STEDMA40_DEV_SD_MM2_TX] = 0,
- [STEDMA40_DEV_SD_MM0_TX] = 0,
+ [STEDMA40_DEV_SD_MM2_TX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_SD_MM0_TX] = -1, /* PrimeCell DMA */
[STEDMA40_DEV_MSP1_TX] = 0,
[STEDMA40_SLIM0_CH0_TX] = 0,
[STEDMA40_DEV_MSP0_TX] = 0,
- [STEDMA40_DEV_SD_MM1_TX] = 0,
- [STEDMA40_DEV_SPI2_TX] = 0,
+ [STEDMA40_DEV_SD_MM1_TX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_SPI2_TX] = -1, /* PrimeCell DMA */
[STEDMA40_DEV_I2C3_TX2] = 0,
- [STEDMA40_DEV_SPI1_TX] = 0,
+ [STEDMA40_DEV_SPI1_TX] = -1, /* PrimeCell DMA */
[STEDMA40_DEV_USB_OTG_OEP_4_12] = 0,
[STEDMA40_DEV_USB_OTG_OEP_5_13] = 0,
[STEDMA40_DEV_USB_OTG_OEP_6_14] = 0,
[STEDMA40_DEV_USB_OTG_OEP_7_15] = 0,
- [STEDMA40_DEV_SPI3_TX] = 0,
- [STEDMA40_DEV_SD_MM3_TX] = 0,
- [STEDMA40_DEV_SD_MM4_TX] = 0,
- [STEDMA40_DEV_SD_MM5_TX] = 0,
+ [STEDMA40_DEV_SPI3_TX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_SD_MM3_TX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_SD_MM4_TX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_SD_MM5_TX] = -1, /* PrimeCell DMA */
[STEDMA40_DEV_DST_SXA4_RX_TX] = 0,
[STEDMA40_DEV_DST_SXA5_RX_TX] = 0,
[STEDMA40_DEV_DST_SXA6_RX_TX] = 0,
@@ -307,19 +461,19 @@ const static dma_addr_t dma40_tx_map[STEDMA40_DEV_MAX] = {
/* Mapping between source event lines and physical device address */
const static dma_addr_t dma40_rx_map[STEDMA40_DEV_MAX] = {
- [STEDMA40_DEV_SPI0_RX] = 0,
- [STEDMA40_DEV_SD_MMC0_RX] = 0,
- [STEDMA40_DEV_SD_MMC1_RX] = 0,
- [STEDMA40_DEV_SD_MMC2_RX] = 0,
+ [STEDMA40_DEV_SPI0_RX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_SD_MMC0_RX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_SD_MMC1_RX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_SD_MMC2_RX] = -1, /* PrimeCell DMA */
[STEDMA40_DEV_I2C1_RX] = 0,
[STEDMA40_DEV_I2C3_RX] = 0,
[STEDMA40_DEV_I2C2_RX] = 0,
- [STEDMA40_DEV_SSP0_RX] = 0,
- [STEDMA40_DEV_SSP1_RX] = 0,
+ [STEDMA40_DEV_SSP0_RX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_SSP1_RX] = -1, /* PrimeCell DMA */
[STEDMA40_DEV_MCDE_RX] = 0,
- [STEDMA40_DEV_UART2_RX] = 0,
- [STEDMA40_DEV_UART1_RX] = 0,
- [STEDMA40_DEV_UART0_RX] = 0,
+ [STEDMA40_DEV_UART2_RX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_UART1_RX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_UART0_RX] = -1, /* PrimeCell DMA */
[STEDMA40_DEV_MSP2_RX] = 0,
[STEDMA40_DEV_I2C0_RX] = 0,
[STEDMA40_DEV_USB_OTG_IEP_8] = 0,
@@ -334,23 +488,23 @@ const static dma_addr_t dma40_rx_map[STEDMA40_DEV_MAX] = {
[STEDMA40_DEV_SRC_SXA1_RX_TX] = 0,
[STEDMA40_DEV_SRC_SXA2_RX_TX] = 0,
[STEDMA40_DEV_SRC_SXA3_RX_TX] = 0,
- [STEDMA40_DEV_SD_MM2_RX] = 0,
- [STEDMA40_DEV_SD_MM0_RX] = 0,
+ [STEDMA40_DEV_SD_MM2_RX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_SD_MM0_RX] = -1, /* PrimeCell DMA */
[STEDMA40_DEV_MSP1_RX] = 0,
[STEDMA40_SLIM0_CH0_RX] = 0,
[STEDMA40_DEV_MSP0_RX] = 0,
- [STEDMA40_DEV_SD_MM1_RX] = 0,
- [STEDMA40_DEV_SPI2_RX] = 0,
+ [STEDMA40_DEV_SD_MM1_RX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_SPI2_RX] = -1, /* PrimeCell DMA */
[STEDMA40_DEV_I2C3_RX2] = 0,
- [STEDMA40_DEV_SPI1_RX] = 0,
+ [STEDMA40_DEV_SPI1_RX] = -1, /* PrimeCell DMA */
[STEDMA40_DEV_USB_OTG_IEP_4_12] = 0,
[STEDMA40_DEV_USB_OTG_IEP_5_13] = 0,
[STEDMA40_DEV_USB_OTG_IEP_6_14] = 0,
[STEDMA40_DEV_USB_OTG_IEP_7_15] = 0,
- [STEDMA40_DEV_SPI3_RX] = 0,
- [STEDMA40_DEV_SD_MM3_RX] = 0,
- [STEDMA40_DEV_SD_MM4_RX] = 0,
- [STEDMA40_DEV_SD_MM5_RX] = 0,
+ [STEDMA40_DEV_SPI3_RX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_SD_MM3_RX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_SD_MM4_RX] = -1, /* PrimeCell DMA */
+ [STEDMA40_DEV_SD_MM5_RX] = -1, /* PrimeCell DMA */
[STEDMA40_DEV_SRC_SXA4_RX_TX] = 0,
[STEDMA40_DEV_SRC_SXA5_RX_TX] = 0,
[STEDMA40_DEV_SRC_SXA6_RX_TX] = 0,
--
1.6.3.3
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