[PATCH 4/7] S5PC100: DMA: Add platform devices for PL330 DMACs
jassisinghbrar at gmail.com
jassisinghbrar at gmail.com
Wed Apr 21 03:41:25 EDT 2010
From: Jassi Brar <jassi.brar at samsung.com>
Samsung's Soc S5PC100 has three PL330 DMACs. First is dedicated for
Memory->Memory data transfer while the other two meant for data
transfer with peripherals.
Define and add latter two PL330 DMACs as platform devices on the
S5PC100 platform.
Signed-off-by: Jassi Brar <jassi.brar at samsung.com>
---
arch/arm/mach-s5pc100/Kconfig | 1 +
arch/arm/mach-s5pc100/Makefile | 2 +-
arch/arm/mach-s5pc100/dma.c | 167 ++++++++++++++++++++++++++++++
arch/arm/mach-s5pc100/include/mach/dma.h | 26 +++++
4 files changed, 195 insertions(+), 1 deletions(-)
create mode 100644 arch/arm/mach-s5pc100/dma.c
create mode 100644 arch/arm/mach-s5pc100/include/mach/dma.h
diff --git a/arch/arm/mach-s5pc100/Kconfig b/arch/arm/mach-s5pc100/Kconfig
index 27ec167..0b157b0 100644
--- a/arch/arm/mach-s5pc100/Kconfig
+++ b/arch/arm/mach-s5pc100/Kconfig
@@ -7,6 +7,7 @@
config CPU_S5PC100
bool
+ select S3C_PL330_DMA
select CPU_S5PC100_INIT
select CPU_S5PC100_CLOCK
help
diff --git a/arch/arm/mach-s5pc100/Makefile b/arch/arm/mach-s5pc100/Makefile
index 809ff10..c32801e 100644
--- a/arch/arm/mach-s5pc100/Makefile
+++ b/arch/arm/mach-s5pc100/Makefile
@@ -11,7 +11,7 @@ obj- :=
# Core support for S5PC100 system
-obj-$(CONFIG_CPU_S5PC100) += cpu.o
+obj-$(CONFIG_CPU_S5PC100) += cpu.o dma.o
# Helper and device support
diff --git a/arch/arm/mach-s5pc100/dma.c b/arch/arm/mach-s5pc100/dma.c
new file mode 100644
index 0000000..8e7af46
--- /dev/null
+++ b/arch/arm/mach-s5pc100/dma.c
@@ -0,0 +1,167 @@
+/*
+ * Copyright (C) 2010 Samsung Electronics Co. Ltd.
+ * Jaswinder Singh <jassi.brar at samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+
+#include <plat/devs.h>
+#include <plat/irqs.h>
+
+#include <mach/map.h>
+
+#include <plat/s3c-pl330-pdata.h>
+
+static u64 dma_dmamask = DMA_BIT_MASK(32);
+
+static struct resource s5pc100_pdma0_resource[] = {
+ [0] = {
+ .start = S5PC100_PA_PDMA0,
+ .end = S5PC100_PA_PDMA0 + SZ_4K,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_PDMA0,
+ .end = IRQ_PDMA0,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct s3c_pl330_platdata s5pc100_pdma0_pdata = {
+ .peri = {
+ [0] = DMACH_UART0_RX,
+ [1] = DMACH_UART0_TX,
+ [2] = DMACH_UART1_RX,
+ [3] = DMACH_UART1_TX,
+ [4] = DMACH_UART2_RX,
+ [5] = DMACH_UART2_TX,
+ [6] = DMACH_UART3_RX,
+ [7] = DMACH_UART3_TX,
+ [8] = DMACH_IRDA,
+ [9] = DMACH_I2S0_RX,
+ [10] = DMACH_I2S0_TX,
+ [11] = DMACH_I2S0S_TX,
+ [12] = DMACH_I2S1_RX,
+ [13] = DMACH_I2S1_TX,
+ [14] = DMACH_I2S2_RX,
+ [15] = DMACH_I2S2_TX,
+ [16] = DMACH_SPI0_RX,
+ [17] = DMACH_SPI0_TX,
+ [18] = DMACH_SPI1_RX,
+ [19] = DMACH_SPI1_TX,
+ [20] = DMACH_SPI2_RX,
+ [21] = DMACH_SPI2_TX,
+ [22] = DMACH_AC97_MICIN,
+ [23] = DMACH_AC97_PCMIN,
+ [24] = DMACH_AC97_PCMOUT,
+ [25] = DMACH_EXTERNAL,
+ [26] = DMACH_PWM,
+ [27] = DMACH_SPDIF,
+ [28] = DMACH_HSI_RX,
+ [29] = DMACH_HSI_TX,
+ [30] = DMACH_MAX,
+ [31] = DMACH_MAX,
+ },
+};
+
+static struct platform_device s5pc100_device_pdma0 = {
+ .name = "s3c-pl330",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(s5pc100_pdma0_resource),
+ .resource = s5pc100_pdma0_resource,
+ .dev = {
+ .dma_mask = &dma_dmamask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ .platform_data = &s5pc100_pdma0_pdata,
+ },
+};
+
+static struct resource s5pc100_pdma1_resource[] = {
+ [0] = {
+ .start = S5PC100_PA_PDMA1,
+ .end = S5PC100_PA_PDMA1 + SZ_4K,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_PDMA1,
+ .end = IRQ_PDMA1,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct s3c_pl330_platdata s5pc100_pdma1_pdata = {
+ .peri = {
+ [0] = DMACH_UART0_RX,
+ [1] = DMACH_UART0_TX,
+ [2] = DMACH_UART1_RX,
+ [3] = DMACH_UART1_TX,
+ [4] = DMACH_UART2_RX,
+ [5] = DMACH_UART2_TX,
+ [6] = DMACH_UART3_RX,
+ [7] = DMACH_UART3_TX,
+ [8] = DMACH_IRDA,
+ [9] = DMACH_I2S0_RX,
+ [10] = DMACH_I2S0_TX,
+ [11] = DMACH_I2S0S_TX,
+ [12] = DMACH_I2S1_RX,
+ [13] = DMACH_I2S1_TX,
+ [14] = DMACH_I2S2_RX,
+ [15] = DMACH_I2S2_TX,
+ [16] = DMACH_SPI0_RX,
+ [17] = DMACH_SPI0_TX,
+ [18] = DMACH_SPI1_RX,
+ [19] = DMACH_SPI1_TX,
+ [20] = DMACH_SPI2_RX,
+ [21] = DMACH_SPI2_TX,
+ [22] = DMACH_PCM0_RX,
+ [23] = DMACH_PCM0_TX,
+ [24] = DMACH_PCM1_RX,
+ [25] = DMACH_PCM1_TX,
+ [26] = DMACH_MSM_REQ0,
+ [27] = DMACH_MSM_REQ1,
+ [28] = DMACH_MSM_REQ2,
+ [29] = DMACH_MSM_REQ3,
+ [30] = DMACH_MAX,
+ [31] = DMACH_MAX,
+ },
+};
+
+static struct platform_device s5pc100_device_pdma1 = {
+ .name = "s3c-pl330",
+ .id = 2,
+ .num_resources = ARRAY_SIZE(s5pc100_pdma1_resource),
+ .resource = s5pc100_pdma1_resource,
+ .dev = {
+ .dma_mask = &dma_dmamask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ .platform_data = &s5pc100_pdma1_pdata,
+ },
+};
+
+static struct platform_device *s5pc100_dmacs[] __initdata = {
+ &s5pc100_device_pdma0,
+ &s5pc100_device_pdma1,
+};
+
+static int __init s5pc100_dma_init(void)
+{
+ platform_add_devices(s5pc100_dmacs, ARRAY_SIZE(s5pc100_dmacs));
+
+ return 0;
+}
+arch_initcall(s5pc100_dma_init);
diff --git a/arch/arm/mach-s5pc100/include/mach/dma.h b/arch/arm/mach-s5pc100/include/mach/dma.h
new file mode 100644
index 0000000..81209eb
--- /dev/null
+++ b/arch/arm/mach-s5pc100/include/mach/dma.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2010 Samsung Electronics Co. Ltd.
+ * Jaswinder Singh <jassi.brar at samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __MACH_DMA_H
+#define __MACH_DMA_H
+
+/* This platform uses the common S3C DMA API driver for PL330 */
+#include <plat/s3c-dma-pl330.h>
+
+#endif /* __MACH_DMA_H */
--
1.6.2.5
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