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Message-Id: <1270682061-7317-1-git-send-email-linus.walleij@stericsson.com>
Date: Thu, 8 Apr 2010 01:14:21 +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 10/11] ARM: config U300 PL180 PL011 PL022 for DMA v5
This will configure the platform data for the PL180, PL011 and
PL022 PrimeCells found in the U300 to use DMA with the generic
PrimeCell DMA engine.
Signed-off-by: Linus Walleij <linus.walleij@...ricsson.com>
---
arch/arm/mach-u300/core.c | 173 ++++++++++++++++++++++++++++++++++++++++-----
arch/arm/mach-u300/mmc.c | 13 +++-
arch/arm/mach-u300/spi.c | 21 ++++--
3 files changed, 181 insertions(+), 26 deletions(-)
diff --git a/arch/arm/mach-u300/core.c b/arch/arm/mach-u300/core.c
index 5f34eb6..7f7e738 100644
--- a/arch/arm/mach-u300/core.c
+++ b/arch/arm/mach-u300/core.c
@@ -3,7 +3,7 @@
* arch/arm/mach-u300/core.c
*
*
- * Copyright (C) 2007-2010 ST-Ericsson AB
+ * Copyright (C) 2007-2010 ST-Ericsson SA
* License terms: GNU General Public License (GPL) version 2
* Core platform support, IRQ handling and device definitions.
* Author: Linus Walleij <linus.walleij@...ricsson.com>
@@ -16,7 +16,9 @@
#include <linux/device.h>
#include <linux/mm.h>
#include <linux/termios.h>
+#include <linux/dmaengine.h>
#include <linux/amba/bus.h>
+#include <linux/amba/serial.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <mach/coh901318.h>
@@ -92,10 +94,20 @@ void __init u300_map_io(void)
* Declaration of devices found on the U300 board and
* their respective memory locations.
*/
+
+static struct amba_pl011_data uart0_plat_data = {
+#ifdef CONFIG_COH901318
+ .dma_filter = coh901318_filter_id,
+ .dma_rx_param = (void *) U300_DMA_UART0_RX,
+ .dma_tx_param = (void *) U300_DMA_UART0_TX,
+#endif
+};
+
static struct amba_device uart0_device = {
.dev = {
+ .coherent_dma_mask = ~0,
.init_name = "uart0", /* Slow device at 0x3000 offset */
- .platform_data = NULL,
+ .platform_data = &uart0_plat_data,
},
.res = {
.start = U300_UART0_BASE,
@@ -107,10 +119,19 @@ static struct amba_device uart0_device = {
/* The U335 have an additional UART1 on the APP CPU */
#ifdef CONFIG_MACH_U300_BS335
+static struct amba_pl011_data uart1_plat_data = {
+#ifdef CONFIG_COH901318
+ .dma_filter = coh901318_filter_id,
+ .dma_rx_param = (void *) U300_DMA_UART1_RX,
+ .dma_tx_param = (void *) U300_DMA_UART1_TX,
+#endif
+};
+
static struct amba_device uart1_device = {
.dev = {
+ .coherent_dma_mask = ~0,
.init_name = "uart1", /* Fast device at 0x7000 offset */
- .platform_data = NULL,
+ .platform_data = &uart1_plat_data,
},
.res = {
.start = U300_UART1_BASE,
@@ -949,20 +970,21 @@ const struct coh_dma_channel chan_config[U300_DMA_CHANNELS] = {
.priority_high = 0,
.dev_addr = U300_MSL_BASE + 6 * 0x40 + 0x220,
},
+ /*
+ * Don't set up device address, burst count or size of src
+ * or dst bus for this peripheral - handled by PrimeCell
+ * DMA extension.
+ */
{
.number = U300_DMA_MMCSD_RX_TX,
.name = "MMCSD RX TX",
.priority_high = 0,
- .dev_addr = U300_MMCSD_BASE + 0x080,
.param.config = COH901318_CX_CFG_CH_DISABLE |
COH901318_CX_CFG_LCR_DISABLE |
COH901318_CX_CFG_TC_IRQ_ENABLE |
COH901318_CX_CFG_BE_IRQ_ENABLE,
.param.ctrl_lli_chained = 0 |
COH901318_CX_CTRL_TC_ENABLE |
- COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
- COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
- COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
COH901318_CX_CTRL_MASTER_MODE_M1RW |
COH901318_CX_CTRL_TCP_ENABLE |
COH901318_CX_CTRL_TC_IRQ_ENABLE |
@@ -971,9 +993,6 @@ const struct coh_dma_channel chan_config[U300_DMA_CHANNELS] = {
COH901318_CX_CTRL_DDMA_LEGACY,
.param.ctrl_lli = 0 |
COH901318_CX_CTRL_TC_ENABLE |
- COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
- COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
- COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
COH901318_CX_CTRL_MASTER_MODE_M1RW |
COH901318_CX_CTRL_TCP_ENABLE |
COH901318_CX_CTRL_TC_IRQ_ENABLE |
@@ -982,9 +1001,6 @@ const struct coh_dma_channel chan_config[U300_DMA_CHANNELS] = {
COH901318_CX_CTRL_DDMA_LEGACY,
.param.ctrl_lli_last = 0 |
COH901318_CX_CTRL_TC_ENABLE |
- COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
- COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
- COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
COH901318_CX_CTRL_MASTER_MODE_M1RW |
COH901318_CX_CTRL_TCP_DISABLE |
COH901318_CX_CTRL_TC_IRQ_ENABLE |
@@ -1003,15 +1019,76 @@ const struct coh_dma_channel chan_config[U300_DMA_CHANNELS] = {
.name = "MSPRO RX",
.priority_high = 0,
},
+ /*
+ * Don't set up device address, burst count or size of src
+ * or dst bus for this peripheral - handled by PrimeCell
+ * DMA extension.
+ */
{
.number = U300_DMA_UART0_TX,
.name = "UART0 TX",
.priority_high = 0,
+ .param.config = COH901318_CX_CFG_CH_DISABLE |
+ COH901318_CX_CFG_LCR_DISABLE |
+ COH901318_CX_CFG_TC_IRQ_ENABLE |
+ COH901318_CX_CFG_BE_IRQ_ENABLE,
+ .param.ctrl_lli_chained = 0 |
+ COH901318_CX_CTRL_TC_ENABLE |
+ COH901318_CX_CTRL_MASTER_MODE_M1RW |
+ COH901318_CX_CTRL_TCP_ENABLE |
+ COH901318_CX_CTRL_TC_IRQ_DISABLE |
+ COH901318_CX_CTRL_HSP_ENABLE |
+ COH901318_CX_CTRL_HSS_DISABLE |
+ COH901318_CX_CTRL_DDMA_LEGACY,
+ .param.ctrl_lli = 0 |
+ COH901318_CX_CTRL_TC_ENABLE |
+ COH901318_CX_CTRL_MASTER_MODE_M1RW |
+ COH901318_CX_CTRL_TCP_ENABLE |
+ COH901318_CX_CTRL_TC_IRQ_ENABLE |
+ COH901318_CX_CTRL_HSP_ENABLE |
+ COH901318_CX_CTRL_HSS_DISABLE |
+ COH901318_CX_CTRL_DDMA_LEGACY,
+ .param.ctrl_lli_last = 0 |
+ COH901318_CX_CTRL_TC_ENABLE |
+ COH901318_CX_CTRL_MASTER_MODE_M1RW |
+ COH901318_CX_CTRL_TCP_ENABLE |
+ COH901318_CX_CTRL_TC_IRQ_ENABLE |
+ COH901318_CX_CTRL_HSP_ENABLE |
+ COH901318_CX_CTRL_HSS_DISABLE |
+ COH901318_CX_CTRL_DDMA_LEGACY,
},
{
.number = U300_DMA_UART0_RX,
.name = "UART0 RX",
.priority_high = 0,
+ .param.config = COH901318_CX_CFG_CH_DISABLE |
+ COH901318_CX_CFG_LCR_DISABLE |
+ COH901318_CX_CFG_TC_IRQ_ENABLE |
+ COH901318_CX_CFG_BE_IRQ_ENABLE,
+ .param.ctrl_lli_chained = 0 |
+ COH901318_CX_CTRL_TC_ENABLE |
+ COH901318_CX_CTRL_MASTER_MODE_M1RW |
+ COH901318_CX_CTRL_TCP_ENABLE |
+ COH901318_CX_CTRL_TC_IRQ_DISABLE |
+ COH901318_CX_CTRL_HSP_ENABLE |
+ COH901318_CX_CTRL_HSS_DISABLE |
+ COH901318_CX_CTRL_DDMA_LEGACY,
+ .param.ctrl_lli = 0 |
+ COH901318_CX_CTRL_TC_ENABLE |
+ COH901318_CX_CTRL_MASTER_MODE_M1RW |
+ COH901318_CX_CTRL_TCP_ENABLE |
+ COH901318_CX_CTRL_TC_IRQ_ENABLE |
+ COH901318_CX_CTRL_HSP_ENABLE |
+ COH901318_CX_CTRL_HSS_DISABLE |
+ COH901318_CX_CTRL_DDMA_LEGACY,
+ .param.ctrl_lli_last = 0 |
+ COH901318_CX_CTRL_TC_ENABLE |
+ COH901318_CX_CTRL_MASTER_MODE_M1RW |
+ COH901318_CX_CTRL_TCP_ENABLE |
+ COH901318_CX_CTRL_TC_IRQ_ENABLE |
+ COH901318_CX_CTRL_HSP_ENABLE |
+ COH901318_CX_CTRL_HSS_DISABLE |
+ COH901318_CX_CTRL_DDMA_LEGACY,
},
{
.number = U300_DMA_APEX_TX,
@@ -1241,15 +1318,77 @@ const struct coh_dma_channel chan_config[U300_DMA_CHANNELS] = {
.name = "XGAM PDI",
.priority_high = 0,
},
+ /*
+ * Don't set up device address, burst count or size of src
+ * or dst bus for this peripheral - handled by PrimeCell
+ * DMA extension.
+ */
{
.number = U300_DMA_SPI_TX,
.name = "SPI TX",
.priority_high = 0,
+ .param.config = COH901318_CX_CFG_CH_DISABLE |
+ COH901318_CX_CFG_LCR_DISABLE |
+ COH901318_CX_CFG_TC_IRQ_ENABLE |
+ COH901318_CX_CFG_BE_IRQ_ENABLE,
+ .param.ctrl_lli_chained = 0 |
+ COH901318_CX_CTRL_TC_ENABLE |
+ COH901318_CX_CTRL_MASTER_MODE_M1RW |
+ COH901318_CX_CTRL_TCP_DISABLE |
+ COH901318_CX_CTRL_TC_IRQ_DISABLE |
+ COH901318_CX_CTRL_HSP_ENABLE |
+ COH901318_CX_CTRL_HSS_DISABLE |
+ COH901318_CX_CTRL_DDMA_LEGACY,
+ .param.ctrl_lli = 0 |
+ COH901318_CX_CTRL_TC_ENABLE |
+ COH901318_CX_CTRL_MASTER_MODE_M1RW |
+ COH901318_CX_CTRL_TCP_DISABLE |
+ COH901318_CX_CTRL_TC_IRQ_ENABLE |
+ COH901318_CX_CTRL_HSP_ENABLE |
+ COH901318_CX_CTRL_HSS_DISABLE |
+ COH901318_CX_CTRL_DDMA_LEGACY,
+ .param.ctrl_lli_last = 0 |
+ COH901318_CX_CTRL_TC_ENABLE |
+ COH901318_CX_CTRL_MASTER_MODE_M1RW |
+ COH901318_CX_CTRL_TCP_DISABLE |
+ COH901318_CX_CTRL_TC_IRQ_ENABLE |
+ COH901318_CX_CTRL_HSP_ENABLE |
+ COH901318_CX_CTRL_HSS_DISABLE |
+ COH901318_CX_CTRL_DDMA_LEGACY,
},
{
.number = U300_DMA_SPI_RX,
.name = "SPI RX",
.priority_high = 0,
+ .param.config = COH901318_CX_CFG_CH_DISABLE |
+ COH901318_CX_CFG_LCR_DISABLE |
+ COH901318_CX_CFG_TC_IRQ_ENABLE |
+ COH901318_CX_CFG_BE_IRQ_ENABLE,
+ .param.ctrl_lli_chained = 0 |
+ COH901318_CX_CTRL_TC_ENABLE |
+ COH901318_CX_CTRL_MASTER_MODE_M1RW |
+ COH901318_CX_CTRL_TCP_DISABLE |
+ COH901318_CX_CTRL_TC_IRQ_DISABLE |
+ COH901318_CX_CTRL_HSP_ENABLE |
+ COH901318_CX_CTRL_HSS_DISABLE |
+ COH901318_CX_CTRL_DDMA_LEGACY,
+ .param.ctrl_lli = 0 |
+ COH901318_CX_CTRL_TC_ENABLE |
+ COH901318_CX_CTRL_MASTER_MODE_M1RW |
+ COH901318_CX_CTRL_TCP_DISABLE |
+ COH901318_CX_CTRL_TC_IRQ_ENABLE |
+ COH901318_CX_CTRL_HSP_ENABLE |
+ COH901318_CX_CTRL_HSS_DISABLE |
+ COH901318_CX_CTRL_DDMA_LEGACY,
+ .param.ctrl_lli_last = 0 |
+ COH901318_CX_CTRL_TC_ENABLE |
+ COH901318_CX_CTRL_MASTER_MODE_M1RW |
+ COH901318_CX_CTRL_TCP_DISABLE |
+ COH901318_CX_CTRL_TC_IRQ_ENABLE |
+ COH901318_CX_CTRL_HSP_ENABLE |
+ COH901318_CX_CTRL_HSS_DISABLE |
+ COH901318_CX_CTRL_DDMA_LEGACY,
+
},
{
.number = U300_DMA_GENERAL_PURPOSE_0,
@@ -1577,7 +1716,7 @@ static void __init u300_init_check_chip(void)
#endif
#ifdef CONFIG_MACH_U300_BS335
if ((val & 0xFF00U) != 0xf000 && (val & 0xFF00U) != 0xf100) {
- printk(KERN_ERR "Platform configured for BS365 " \
+ printk(KERN_ERR "Platform configured for BS335 " \
" with DB3350 but %s detected, expect problems!",
chipname);
}
@@ -1654,12 +1793,12 @@ void __init u300_init_devices(void)
/* Register subdevices on the I2C buses */
u300_i2c_register_board_devices();
- /* Register subdevices on the SPI bus */
- u300_spi_register_board_devices();
-
/* Register the platform devices */
platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
+ /* Register subdevices on the SPI bus */
+ u300_spi_register_board_devices();
+
#ifndef CONFIG_MACH_U300_SEMI_IS_SHARED
/*
* Enable SEMI self refresh. Self-refresh of the SDRAM is entered when
diff --git a/arch/arm/mach-u300/mmc.c b/arch/arm/mach-u300/mmc.c
index 88506d0..3acb710 100644
--- a/arch/arm/mach-u300/mmc.c
+++ b/arch/arm/mach-u300/mmc.c
@@ -3,11 +3,11 @@
* arch/arm/mach-u300/mmc.c
*
*
- * Copyright (C) 2009 ST-Ericsson AB
+ * Copyright (C) 2009 ST-Ericsson SA
* License terms: GNU General Public License (GPL) version 2
*
* Author: Linus Walleij <linus.walleij@...ricsson.com>
- * Author: Johan Lundin <johan.lundin@...ricsson.com>
+ * Author: Johan Lundin
* Author: Jonas Aaberg <jonas.aberg@...ricsson.com>
*/
#include <linux/device.h>
@@ -19,8 +19,11 @@
#include <linux/regulator/consumer.h>
#include <linux/regulator/machine.h>
#include <linux/gpio.h>
+#include <linux/dmaengine.h>
#include <linux/amba/mmci.h>
#include <linux/slab.h>
+#include <mach/coh901318.h>
+#include <mach/dma_channels.h>
#include "mmc.h"
#include "padmux.h"
@@ -108,6 +111,12 @@ int __devinit mmc_init(struct amba_device *adev)
mmci_card->mmc0_plat_data.gpio_cd = -1;
mmci_card->mmc0_plat_data.capabilities = MMC_CAP_MMC_HIGHSPEED |
MMC_CAP_SD_HIGHSPEED | MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA;
+#ifdef CONFIG_COH901318
+ mmci_card->mmc0_plat_data.dma_filter = coh901318_filter_id;
+ mmci_card->mmc0_plat_data.dma_rx_param =
+ (void *) U300_DMA_MMCSD_RX_TX;
+ /* Don't specify a TX channel, this RX channel is bidirectional */
+#endif
mmcsd_device->platform_data = (void *) &mmci_card->mmc0_plat_data;
diff --git a/arch/arm/mach-u300/spi.c b/arch/arm/mach-u300/spi.c
index f0e887b..243c999 100644
--- a/arch/arm/mach-u300/spi.c
+++ b/arch/arm/mach-u300/spi.c
@@ -11,6 +11,9 @@
#include <linux/spi/spi.h>
#include <linux/amba/pl022.h>
#include <linux/err.h>
+#include <mach/coh901318.h>
+#include <mach/dma_channels.h>
+
#include "padmux.h"
/*
@@ -32,11 +35,8 @@ static void select_dummy_chip(u32 chipselect)
struct pl022_config_chip dummy_chip_info = {
/* Nominally this is LOOPBACK_DISABLED, but this is our dummy chip! */
.lbm = LOOPBACK_ENABLED,
- /*
- * available POLLING_TRANSFER and INTERRUPT_TRANSFER,
- * DMA_TRANSFER does not work
- */
- .com_mode = INTERRUPT_TRANSFER,
+ /* available POLLING_TRANSFER, INTERRUPT_TRANSFER, DMA_TRANSFER */
+ .com_mode = DMA_TRANSFER,
.iface = SSP_INTERFACE_MOTOROLA_SPI,
/* We can only act as master but SSP_SLAVE is possible in theory */
.hierarchy = SSP_MASTER,
@@ -83,8 +83,6 @@ static struct spi_board_info u300_spi_devices[] = {
static struct pl022_ssp_controller ssp_platform_data = {
/* If you have several SPI buses this varies, we have only bus 0 */
.bus_id = 0,
- /* Set this to 1 when we think we got DMA working */
- .enable_dma = 0,
/*
* On the APP CPU GPIO 4, 5 and 6 are connected as generic
* chip selects for SPI. (Same on U330, U335 and U365.)
@@ -92,6 +90,14 @@ static struct pl022_ssp_controller ssp_platform_data = {
* and do padmuxing accordingly too.
*/
.num_chipselect = 3,
+#ifdef CONFIG_COH901318
+ .enable_dma = 1,
+ .dma_filter = coh901318_filter_id,
+ .dma_rx_param = (void *) U300_DMA_SPI_RX,
+ .dma_tx_param = (void *) U300_DMA_SPI_TX,
+#else
+ .enable_dma = 0,
+#endif
};
@@ -117,6 +123,7 @@ void __init u300_spi_init(struct amba_device *adev)
}
}
+
void __init u300_spi_register_board_devices(void)
{
/* Register any SPI devices */
--
1.6.3.3
--
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