[v2,08/11] OMAP: DMA: Convert DMA library into DMA platform Driver
diff mbox

Message ID 1282647866-6918-9-git-send-email-manjugk@ti.com
State Changes Requested
Delegated to: Kevin Hilman
Headers show

Commit Message

manjugk manjugk Aug. 24, 2010, 11:04 a.m. UTC
None

Patch
diff mbox

diff --git a/arch/arm/mach-omap1/Makefile b/arch/arm/mach-omap1/Makefile
index 9a304d8..b7dfc54 100644
--- a/arch/arm/mach-omap1/Makefile
+++ b/arch/arm/mach-omap1/Makefile
@@ -3,7 +3,7 @@ 
 #
 
 # Common support
-obj-y := io.o id.o sram.o irq.o mux.o flash.o serial.o devices.o
+obj-y := io.o id.o sram.o irq.o mux.o flash.o serial.o devices.o dma.o
 obj-y += clock.o clock_data.o opp_data.o
 
 obj-$(CONFIG_OMAP_MCBSP) += mcbsp.o
diff --git a/arch/arm/mach-omap1/include/mach/dma.h b/arch/arm/mach-omap1/include/mach/dma.h
index d446cdd..1eb0d31 100644
--- a/arch/arm/mach-omap1/include/mach/dma.h
+++ b/arch/arm/mach-omap1/include/mach/dma.h
@@ -77,4 +77,70 @@ 
 #define OMAP1_DMA_CCR2(n)		(0x40 * (n) + 0x24)
 #define OMAP1_DMA_LCH_CTRL(n)		(0x40 * (n) + 0x2a)
 
+/* Dummy defines to support multi omap code */
+/* Channel specific registers */
+#define OMAP_DMA4_CCR(n)		0
+#define OMAP_DMA4_CSDP(n)		0
+#define OMAP_DMA4_CEN(n)		0
+#define OMAP_DMA4_CFN(n)		0
+#define OMAP_DMA4_COLOR(n)		0
+#define OMAP_DMA4_CSSA(n)		0
+#define OMAP_DMA4_CSEI(n)		0
+#define OMAP_DMA4_CSFI(n)		0
+#define OMAP_DMA4_CDSA(n)		0
+#define OMAP_DMA4_CDEI(n)		0
+#define OMAP_DMA4_CDFI(n)		0
+#define OMAP_DMA4_CSR(n)		0
+#define OMAP_DMA4_CICR(n)		0
+#define OMAP_DMA4_CLNK_CTRL(n)		0
+#define OMAP_DMA4_CH_BASE(n)		0
+#define OMAP_DMA4_CDAC(n)		0
+#define OMAP_DMA4_CSAC(n)		0
+
+/* Common registers */
+#define OMAP_DMA4_IRQENABLE_L0		0
+#define OMAP_DMA4_OCP_SYSCONFIG		0
+#define OMAP_DMA4_GCR			0
+#define OMAP_DMA4_IRQSTATUS_L0		0
+#define OMAP_DMA4_CAPS_2		0
+#define OMAP_DMA4_CAPS_3		0
+#define OMAP_DMA4_CAPS_4		0
+#define OMAP_DMA4_REVISION		0
+
+#define OMAP_DMA4_CCR2(n)		0
+#define OMAP_DMA4_LCH_CTRL(n)		0
+#define OMAP_DMA4_COLOR_L(n)		0
+#define OMAP_DMA4_COLOR_U(n)		0
+#define OMAP1_DMA_COLOR(n)		0
+#define OMAP_DMA4_CSSA_U(n)		0
+#define OMAP_DMA4_CSSA_L(n)		0
+#define OMAP1_DMA_CSSA(n)		0
+#define OMAP_DMA4_CDSA_U(n)		0
+#define OMAP_DMA4_CDSA_L(n)		0
+#define OMAP1_DMA_CDSA(n)		0
+#define OMAP_DMA4_CPC(n)		0
+
+#define OMAP1_DMA_IRQENABLE_L0		0
+#define OMAP1_DMA_IRQENABLE_L0		0
+#define OMAP1_DMA_IRQSTATUS_L0		0
+#define OMAP1_DMA_OCP_SYSCONFIG		0
+#define OMAP_DMA4_HW_ID			0
+#define OMAP_DMA4_CAPS_0_U		0
+#define OMAP_DMA4_CAPS_0_L		0
+#define OMAP_DMA4_CAPS_1_U		0
+#define OMAP_DMA4_CAPS_1_L		0
+#define OMAP_DMA4_GSCR			0
+#define OMAP1_DMA_REVISION		0
+
+struct omap_dma_lch {
+	int next_lch;
+	int dev_id;
+	u16 saved_csr;
+	u16 enabled_irqs;
+	const char *dev_name;
+	void (*callback)(int lch, u16 ch_status, void *data);
+	void *data;
+	long flags;
+};
+
 #endif /* __ASM_ARCH_OMAP1_DMA_H */
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 9b44773..6a8b231 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -3,7 +3,7 @@ 
 #
 
 # Common support
-obj-y := id.o io.o control.o mux.o devices.o serial.o gpmc.o timer-gp.o pm.o
+obj-y := id.o io.o control.o mux.o devices.o serial.o gpmc.o timer-gp.o pm.o dma.o
 
 omap-2-3-common				= irq.o sdrc.o
 hwmod-common				= omap_hwmod.o \
diff --git a/arch/arm/mach-omap2/include/mach/dma.h b/arch/arm/mach-omap2/include/mach/dma.h
index 3eca7d8..22f4b41 100644
--- a/arch/arm/mach-omap2/include/mach/dma.h
+++ b/arch/arm/mach-omap2/include/mach/dma.h
@@ -77,4 +77,87 @@ 
 #define OMAP_DMA4_CNDP(n)		(0x60 * (n) + 0xd4)
 #define OMAP_DMA4_CCDN(n)		(0x60 * (n) + 0xd8)
 
+
+/* Dummy defines for support multi omap code */
+/* Common registers */
+#define OMAP1_DMA_GCR				0
+#define OMAP1_DMA_HW_ID				0
+#define OMAP1_DMA_CAPS_0_U			0
+#define OMAP1_DMA_CAPS_0_L			0
+#define OMAP1_DMA_CAPS_1_U			0
+#define OMAP1_DMA_CAPS_1_L			0
+#define OMAP1_DMA_CAPS_2			0
+#define OMAP1_DMA_CAPS_3			0
+#define OMAP1_DMA_CAPS_4			0
+#define OMAP1_DMA_GSCR				0
+
+/* Channel specific registers */
+#define OMAP1_DMA_CH_BASE(n)			0
+#define OMAP1_DMA_CCR(n)			0
+#define OMAP1_DMA_CSDP(n)			0
+#define OMAP1_DMA_CCR2(n)			0
+#define OMAP1_DMA_CEN(n)			0
+#define OMAP1_DMA_CFN(n)			0
+#define OMAP1_DMA_LCH_CTRL(n)			0
+#define OMAP1_DMA_COLOR_L(n)			0
+#define OMAP1_DMA_COLOR_U(n)			0
+#define OMAP1_DMA_CSSA_U(n)			0
+#define OMAP1_DMA_CSSA_L(n)			0
+#define OMAP1_DMA_CSEI(n)			0
+#define OMAP1_DMA_CSFI(n)			0
+#define OMAP1_DMA_CDSA_U(n)			0
+#define OMAP1_DMA_CDSA_L(n)			0
+#define OMAP1_DMA_CDEI(n)			0
+#define OMAP1_DMA_CDFI(n)			0
+#define OMAP1_DMA_CSR(n)			0
+#define OMAP1_DMA_CICR(n)			0
+#define OMAP1_DMA_CLNK_CTRL(n)			0
+#define OMAP1_DMA_CPC(n)			0
+#define OMAP1_DMA_CDAC(n)			0
+#define OMAP1_DMA_CSAC(n)			0
+#define OMAP1_DMA_CCEN(n)			0
+#define OMAP1_DMA_CCFN(n)			0
+
+#define OMAP_DMA4_CCR2(n)			0
+#define OMAP_DMA4_LCH_CTRL(n)			0
+#define OMAP_DMA4_COLOR_L(n)			0
+#define OMAP_DMA4_COLOR_U(n)			0
+#define OMAP1_DMA_COLOR(n)			0
+#define OMAP_DMA4_CSSA_U(n)			0
+#define OMAP_DMA4_CSSA_L(n)			0
+#define OMAP1_DMA_CSSA(n)			0
+#define OMAP_DMA4_CDSA_U(n)			0
+#define OMAP_DMA4_CDSA_L(n)			0
+#define OMAP1_DMA_CDSA(n)			0
+#define OMAP_DMA4_CPC(n)			0
+
+#define OMAP1_DMA_IRQENABLE_L0			0
+#define OMAP1_DMA_IRQSTATUS_L0			0
+#define OMAP1_DMA_OCP_SYSCONFIG			0
+#define OMAP1_DMA_OCP_SYSCONFIG			0
+#define OMAP_DMA4_HW_ID				0
+#define OMAP_DMA4_CAPS_0_U			0
+#define OMAP_DMA4_CAPS_0_L			0
+#define OMAP_DMA4_CAPS_1_U			0
+#define OMAP_DMA4_CAPS_1_L			0
+#define OMAP_DMA4_GSCR				0
+#define OMAP1_DMA_REVISION			0
+
+struct omap_dma_lch {
+	int next_lch;
+	int dev_id;
+	u16 saved_csr;
+	u16 enabled_irqs;
+	const char *dev_name;
+	void (*callback)(int lch, u16 ch_status, void *data);
+	void *data;
+	long flags;
+	/* required for Dynamic chaining */
+	int prev_linked_ch;
+	int next_linked_ch;
+	int state;
+	int chain_id;
+	int status;
+};
+
 #endif /* __ASM_ARCH_OMAP2_DMA_H */
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
index ec7eddf..36c3dde 100644
--- a/arch/arm/plat-omap/dma.c
+++ b/arch/arm/plat-omap/dma.c
@@ -15,6 +15,9 @@ 
  *
  * Support functions for the OMAP internal DMA channels.
  *
+ * Copyright (C) 2010 Texas Instruments
+ * Converted DMA library into DMA platform driver.
+ *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
@@ -30,13 +33,17 @@ 
 #include <linux/irq.h>
 #include <linux/io.h>
 #include <linux/slab.h>
+#include <linux/pm_runtime.h>
 
 #include <asm/system.h>
+
 #include <mach/hardware.h>
-#include <plat/dma.h>
 
+#include <plat/dma.h>
+#include <plat/omap_device.h>
 #include <plat/tc.h>
 
+
 #undef DEBUG
 
 #ifndef CONFIG_ARCH_OMAP1
@@ -60,27 +67,6 @@  static struct omap_dma_global_context_registers {
 	u32 dma_gcr;
 } omap_dma_global_context;
 
-struct omap_dma_lch {
-	int next_lch;
-	int dev_id;
-	u16 saved_csr;
-	u16 enabled_irqs;
-	const char *dev_name;
-	void (*callback)(int lch, u16 ch_status, void *data);
-	void *data;
-
-#ifndef CONFIG_ARCH_OMAP1
-	/* required for Dynamic chaining */
-	int prev_linked_ch;
-	int next_linked_ch;
-	int state;
-	int chain_id;
-
-	int status;
-#endif
-	long flags;
-};
-
 struct dma_link_info {
 	int *linked_dmach_q;
 	int no_of_lchs_linked;
@@ -95,6 +81,7 @@  struct dma_link_info {
 };
 
 static struct dma_link_info *dma_linked_lch;
+static struct platform_device *ddev;
 
 #ifndef CONFIG_ARCH_OMAP1
 
@@ -136,15 +123,10 @@  static int omap_dma_reserve_channels;
 
 static spinlock_t dma_chan_lock;
 static struct omap_dma_lch *dma_chan;
-static void __iomem *omap_dma_base;
 
-static const u8 omap1_dma_irq[OMAP1_LOGICAL_DMA_CH_COUNT] = {
-	INT_DMA_CH0_6, INT_DMA_CH1_7, INT_DMA_CH2_8, INT_DMA_CH3,
-	INT_DMA_CH4, INT_DMA_CH5, INT_1610_DMA_CH6, INT_1610_DMA_CH7,
-	INT_1610_DMA_CH8, INT_1610_DMA_CH9, INT_1610_DMA_CH10,
-	INT_1610_DMA_CH11, INT_1610_DMA_CH12, INT_1610_DMA_CH13,
-	INT_1610_DMA_CH14, INT_1610_DMA_CH15, INT_DMA_LCD
-};
+static void __iomem *omap_dma_base;
+static struct omap_system_dma_plat_info *p;
+static struct omap_dma_dev_attr *d;
 
 static inline void disable_lnk(int lch);
 static void omap_disable_channel_irq(int lch);
@@ -753,6 +735,8 @@  int omap_request_dma(int dev_id, const char *dev_name,
 	chan = dma_chan + free_ch;
 	chan->dev_id = dev_id;
 
+	pm_runtime_get_sync(&ddev->dev);
+
 	if (cpu_class_is_omap1())
 		clear_lch_regs(free_ch);
 
@@ -846,6 +830,9 @@  void omap_free_dma(int lch)
 	dma_chan[lch].dev_id = -1;
 	dma_chan[lch].next_lch = -1;
 	dma_chan[lch].callback = NULL;
+
+	pm_runtime_put_sync(&ddev->dev);
+
 	spin_unlock_irqrestore(&dma_chan_lock, flags);
 }
 EXPORT_SYMBOL(omap_free_dma);
@@ -962,7 +949,7 @@  void omap_start_dma(int lch)
 
 	if (!omap_dma_in_1510_mode() && dma_chan[lch].next_lch != -1) {
 		int next_lch, cur_lch;
-		char dma_chan_link_map[OMAP_DMA4_LOGICAL_DMA_CH_COUNT];
+		char dma_chan_link_map[dma_chan_count];
 
 		dma_chan_link_map[lch] = 1;
 		/* Set the link register of the first channel */
@@ -1023,7 +1010,7 @@  void omap_stop_dma(int lch)
 
 	if (!omap_dma_in_1510_mode() && dma_chan[lch].next_lch != -1) {
 		int next_lch, cur_lch = lch;
-		char dma_chan_link_map[OMAP_DMA4_LOGICAL_DMA_CH_COUNT];
+		char dma_chan_link_map[dma_chan_count];
 
 		memset(dma_chan_link_map, 0, sizeof(dma_chan_link_map));
 		do {
@@ -2039,57 +2026,56 @@  void omap_dma_global_context_restore(void)
 			omap_clear_dma(ch);
 }
 
-/*----------------------------------------------------------------------------*/
-
-static int __init omap_init_dma(void)
+static int __devinit omap_system_dma_probe(struct platform_device *pdev)
 {
-	unsigned long base;
-	int ch, r;
+	struct omap_system_dma_plat_info *pdata = pdev->dev.platform_data;
+	struct resource *mem;
+	int ch, ret = 0;
+	int dma_irq;
+	char irq_name[4];
+
+	if (!pdata) {
+		dev_err(&pdev->dev, "%s: System DMA initialized without"
+			"platform data\n", __func__);
+		return -EINVAL;
+	}
 
-	if (cpu_class_is_omap1()) {
-		base = OMAP1_DMA_BASE;
-		dma_lch_count = OMAP1_LOGICAL_DMA_CH_COUNT;
-	} else if (cpu_is_omap24xx()) {
-		base = OMAP24XX_DMA4_BASE;
-		dma_lch_count = OMAP_DMA4_LOGICAL_DMA_CH_COUNT;
-	} else if (cpu_is_omap34xx()) {
-		base = OMAP34XX_DMA4_BASE;
-		dma_lch_count = OMAP_DMA4_LOGICAL_DMA_CH_COUNT;
-	} else if (cpu_is_omap44xx()) {
-		base = OMAP44XX_DMA4_BASE;
-		dma_lch_count = OMAP_DMA4_LOGICAL_DMA_CH_COUNT;
-	} else {
-		pr_err("DMA init failed for unsupported omap\n");
-		return -ENODEV;
+	p = pdata;
+	d = p->dma_attr;
+
+	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!mem) {
+		dev_err(&pdev->dev, "%s: no mem resource\n", __func__);
+		return -EINVAL;
 	}
 
-	omap_dma_base = ioremap(base, SZ_4K);
-	BUG_ON(!omap_dma_base);
+	omap_dma_base = ioremap(mem->start, resource_size(mem));
+	if (!omap_dma_base) {
+		dev_err(&pdev->dev, "%s: ioremap fail\n", __func__);
+		ret = -ENOMEM;
+		goto exit_release_region;
+	}
 
 	if (cpu_class_is_omap2() && omap_dma_reserve_channels
 			&& (omap_dma_reserve_channels <= dma_lch_count))
-		dma_lch_count = omap_dma_reserve_channels;
+		d->lch_count = omap_dma_reserve_channels;
 
-	dma_chan = kzalloc(sizeof(struct omap_dma_lch) * dma_lch_count,
-				GFP_KERNEL);
-	if (!dma_chan) {
-		r = -ENOMEM;
-		goto out_unmap;
-	}
+	dma_lch_count		= d->lch_count;
+	dma_chan_count		= d->chan_count;
+	dma_chan		= d->chan;
 
 	if (cpu_class_is_omap2()) {
 		dma_linked_lch = kzalloc(sizeof(struct dma_link_info) *
 						dma_lch_count, GFP_KERNEL);
 		if (!dma_linked_lch) {
-			r = -ENOMEM;
-			goto out_free;
+			ret = -ENOMEM;
+			goto exit_dma_chan;
 		}
 	}
+	enable_1510_mode = d->dev_caps & ENABLE_1510_MODE;
 
 	if (cpu_is_omap15xx()) {
 		printk(KERN_INFO "DMA support for OMAP15xx initialized\n");
-		dma_chan_count = 9;
-		enable_1510_mode = 1;
 	} else if (cpu_is_omap16xx() || cpu_is_omap7xx()) {
 		printk(KERN_INFO "OMAP DMA hardware version %d\n",
 		       dma_read(HW_ID));
@@ -2107,21 +2093,14 @@  static int __init omap_init_dma(void)
 			w = dma_read(GSCR);
 			w |= 1 << 3;
 			dma_write(w, GSCR);
-			dma_chan_count = 16;
-		} else
-			dma_chan_count = 9;
+		}
 	} else if (cpu_class_is_omap2()) {
 		u8 revision = dma_read(REVISION) & 0xff;
 		printk(KERN_INFO "OMAP DMA hardware revision %d.%d\n",
 		       revision >> 4, revision & 0xf);
-		dma_chan_count = dma_lch_count;
-	} else {
-		dma_chan_count = 0;
-		return 0;
 	}
 
 	spin_lock_init(&dma_chan_lock);
-
 	for (ch = 0; ch < dma_chan_count; ch++) {
 		omap_clear_dma(ch);
 		if (cpu_class_is_omap2())
@@ -2138,19 +2117,30 @@  static int __init omap_init_dma(void)
 			 * request_irq() doesn't like dev_id (ie. ch) being
 			 * zero, so we have to kludge around this.
 			 */
-			r = request_irq(omap1_dma_irq[ch],
+			sprintf(&irq_name[0], "%d", ch);
+			dma_irq = platform_get_irq_byname(pdev, irq_name);
+
+			if (dma_irq < 0) {
+				dev_err(&pdev->dev, "%s:unable to get irq\n",
+								__func__);
+				ret = dma_irq;
+				goto exit_unmap;
+			}
+			ret = request_irq(dma_irq,
 					omap1_dma_irq_handler, 0, "DMA",
 					(void *) (ch + 1));
-			if (r != 0) {
-				int i;
-
-				printk(KERN_ERR "unable to request IRQ %d "
-				       "for DMA (error %d)\n",
-				       omap1_dma_irq[ch], r);
-				for (i = 0; i < ch; i++)
-					free_irq(omap1_dma_irq[i],
-						 (void *) (i + 1));
-				goto out_free;
+			if (ret != 0) {
+				int irq_rel;
+				printk(KERN_ERR "unable to request IRQ %d"
+					"for DMA (error %d)\n", dma_irq, ret);
+				for (irq_rel = 0; irq_rel < ch;
+								irq_rel++) {
+					dma_irq = platform_get_irq(pdev,
+								irq_rel);
+					free_irq(dma_irq, (void *)
+							(irq_rel + 1));
+					goto exit_dma_chan;
+				}
 			}
 		}
 	}
@@ -2160,46 +2150,72 @@  static int __init omap_init_dma(void)
 				DMA_DEFAULT_FIFO_DEPTH, 0);
 
 	if (cpu_class_is_omap2()) {
-		int irq;
-		if (cpu_is_omap44xx())
-			irq = OMAP44XX_IRQ_SDMA_0;
-		else
-			irq = INT_24XX_SDMA_IRQ0;
-		setup_irq(irq, &omap24xx_dma_irq);
-	}
-
-	if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
-		/* Enable smartidle idlemodes and autoidle */
-		u32 v = dma_read(OCP_SYSCONFIG);
-		v &= ~(DMA_SYSCONFIG_MIDLEMODE_MASK |
-				DMA_SYSCONFIG_SIDLEMODE_MASK |
-				DMA_SYSCONFIG_AUTOIDLE);
-		v |= (DMA_SYSCONFIG_MIDLEMODE(DMA_IDLEMODE_SMARTIDLE) |
-			DMA_SYSCONFIG_SIDLEMODE(DMA_IDLEMODE_SMARTIDLE) |
-			DMA_SYSCONFIG_AUTOIDLE);
-		dma_write(v , OCP_SYSCONFIG);
-		/* reserve dma channels 0 and 1 in high security devices */
-		if (cpu_is_omap34xx() &&
-			(omap_type() != OMAP2_DEVICE_TYPE_GP)) {
-			printk(KERN_INFO "Reserving DMA channels 0 and 1 for "
-					"HS ROM code\n");
-			dma_chan[0].dev_id = 0;
-			dma_chan[1].dev_id = 1;
-		}
+		strcpy(irq_name, "0");
+		dma_irq = platform_get_irq_byname(pdev, irq_name);
+		setup_irq(dma_irq, &omap24xx_dma_irq);
 	}
 
+	/* reserve dma channels 0 and 1 in high security devices */
+	if (cpu_is_omap34xx() &&
+		(omap_type() != OMAP2_DEVICE_TYPE_GP)) {
+		printk(KERN_INFO "Reserving DMA channels 0 and 1 for "
+				"HS ROM code\n");
+		dma_chan[0].dev_id = 0;
+		dma_chan[1].dev_id = 1;
+	}
+
+	/* Enable run timer PM */
+	ddev = pdev;
+	pm_runtime_enable(&ddev->dev);
+
+	if (omap_dma_reserve_channels)
+		pm_runtime_get_sync(&ddev->dev);
+
+	dev_info(&pdev->dev, "System DMA registered\n");
 	return 0;
 
-out_free:
+exit_dma_chan:
 	kfree(dma_chan);
+exit_unmap:
+	iounmap(omap_dma_base);
+exit_release_region:
+	release_mem_region(mem->start, resource_size(mem));
+	return ret;
+}
 
-out_unmap:
+static int __devexit omap_system_dma_remove(struct platform_device *pdev)
+{
+	struct resource *mem;
 	iounmap(omap_dma_base);
+	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	release_mem_region(mem->start, resource_size(mem));
+	return 0;
+}
 
-	return r;
+static struct platform_driver omap_system_dma_driver = {
+	.probe		= omap_system_dma_probe,
+	.remove		= omap_system_dma_remove,
+	.driver		= {
+		.name	= "dma"
+	},
+};
+
+static int __init omap_system_dma_init(void)
+{
+	return platform_driver_register(&omap_system_dma_driver);
+}
+
+arch_initcall(omap_system_dma_init);
+
+static void __exit omap_system_dma_exit(void)
+{
+	platform_driver_unregister(&omap_system_dma_driver);
 }
 
-arch_initcall(omap_init_dma);
+MODULE_DESCRIPTION("OMAP SYSTEM DMA DRIVER");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRIVER_NAME);
+MODULE_AUTHOR("Texas Instruments Inc");
 
 /*
  * Reserve the omap SDMA channels using cmdline bootarg
diff --git a/arch/arm/plat-omap/include/plat/dma.h b/arch/arm/plat-omap/include/plat/dma.h
index 67b9489..a44b11b 100644
--- a/arch/arm/plat-omap/include/plat/dma.h
+++ b/arch/arm/plat-omap/include/plat/dma.h
@@ -21,142 +21,11 @@ 
 #ifndef __ASM_ARCH_DMA_H
 #define __ASM_ARCH_DMA_H
 
+#include <linux/platform_device.h>
+
 /* Move omap4 specific defines to dma-44xx.h */
 #include "dma-44xx.h"
 
-/* Hardware registers for omap1 */
-#define OMAP1_DMA_BASE			(0xfffed800)
-
-#define OMAP1_DMA_GCR			0x400
-#define OMAP1_DMA_GSCR			0x404
-#define OMAP1_DMA_GRST			0x408
-#define OMAP1_DMA_HW_ID			0x442
-#define OMAP1_DMA_PCH2_ID		0x444
-#define OMAP1_DMA_PCH0_ID		0x446
-#define OMAP1_DMA_PCH1_ID		0x448
-#define OMAP1_DMA_PCHG_ID		0x44a
-#define OMAP1_DMA_PCHD_ID		0x44c
-#define OMAP1_DMA_CAPS_0_U		0x44e
-#define OMAP1_DMA_CAPS_0_L		0x450
-#define OMAP1_DMA_CAPS_1_U		0x452
-#define OMAP1_DMA_CAPS_1_L		0x454
-#define OMAP1_DMA_CAPS_2		0x456
-#define OMAP1_DMA_CAPS_3		0x458
-#define OMAP1_DMA_CAPS_4		0x45a
-#define OMAP1_DMA_PCH2_SR		0x460
-#define OMAP1_DMA_PCH0_SR		0x480
-#define OMAP1_DMA_PCH1_SR		0x482
-#define OMAP1_DMA_PCHD_SR		0x4c0
-
-/* Hardware registers for omap2 and omap3 */
-#define OMAP24XX_DMA4_BASE		(L4_24XX_BASE + 0x56000)
-#define OMAP34XX_DMA4_BASE		(L4_34XX_BASE + 0x56000)
-#define OMAP44XX_DMA4_BASE		(L4_44XX_BASE + 0x56000)
-
-#define OMAP_DMA4_REVISION		0x00
-#define OMAP_DMA4_GCR			0x78
-#define OMAP_DMA4_IRQSTATUS_L0		0x08
-#define OMAP_DMA4_IRQSTATUS_L1		0x0c
-#define OMAP_DMA4_IRQSTATUS_L2		0x10
-#define OMAP_DMA4_IRQSTATUS_L3		0x14
-#define OMAP_DMA4_IRQENABLE_L0		0x18
-#define OMAP_DMA4_IRQENABLE_L1		0x1c
-#define OMAP_DMA4_IRQENABLE_L2		0x20
-#define OMAP_DMA4_IRQENABLE_L3		0x24
-#define OMAP_DMA4_SYSSTATUS		0x28
-#define OMAP_DMA4_OCP_SYSCONFIG		0x2c
-#define OMAP_DMA4_CAPS_0		0x64
-#define OMAP_DMA4_CAPS_2		0x6c
-#define OMAP_DMA4_CAPS_3		0x70
-#define OMAP_DMA4_CAPS_4		0x74
-
-#define OMAP1_LOGICAL_DMA_CH_COUNT	17
-#define OMAP_DMA4_LOGICAL_DMA_CH_COUNT	32	/* REVISIT: Is this 32 + 2? */
-
-/* Common channel specific registers for omap1 */
-#define OMAP1_DMA_CH_BASE(n)		(0x40 * (n) + 0x00)
-#define OMAP1_DMA_CSDP(n)		(0x40 * (n) + 0x00)
-#define OMAP1_DMA_CCR(n)		(0x40 * (n) + 0x02)
-#define OMAP1_DMA_CICR(n)		(0x40 * (n) + 0x04)
-#define OMAP1_DMA_CSR(n)		(0x40 * (n) + 0x06)
-#define OMAP1_DMA_CEN(n)		(0x40 * (n) + 0x10)
-#define OMAP1_DMA_CFN(n)		(0x40 * (n) + 0x12)
-#define OMAP1_DMA_CSFI(n)		(0x40 * (n) + 0x14)
-#define OMAP1_DMA_CSEI(n)		(0x40 * (n) + 0x16)
-#define OMAP1_DMA_CPC(n)		(0x40 * (n) + 0x18)	/* 15xx only */
-#define OMAP1_DMA_CSAC(n)		(0x40 * (n) + 0x18)
-#define OMAP1_DMA_CDAC(n)		(0x40 * (n) + 0x1a)
-#define OMAP1_DMA_CDEI(n)		(0x40 * (n) + 0x1c)
-#define OMAP1_DMA_CDFI(n)		(0x40 * (n) + 0x1e)
-#define OMAP1_DMA_CLNK_CTRL(n)		(0x40 * (n) + 0x28)
-
-/* Common channel specific registers for omap2 */
-#define OMAP_DMA4_CH_BASE(n)		(0x60 * (n) + 0x80)
-#define OMAP_DMA4_CCR(n)		(0x60 * (n) + 0x80)
-#define OMAP_DMA4_CLNK_CTRL(n)		(0x60 * (n) + 0x84)
-#define OMAP_DMA4_CICR(n)		(0x60 * (n) + 0x88)
-#define OMAP_DMA4_CSR(n)		(0x60 * (n) + 0x8c)
-#define OMAP_DMA4_CSDP(n)		(0x60 * (n) + 0x90)
-#define OMAP_DMA4_CEN(n)		(0x60 * (n) + 0x94)
-#define OMAP_DMA4_CFN(n)		(0x60 * (n) + 0x98)
-#define OMAP_DMA4_CSEI(n)		(0x60 * (n) + 0xa4)
-#define OMAP_DMA4_CSFI(n)		(0x60 * (n) + 0xa8)
-#define OMAP_DMA4_CDEI(n)		(0x60 * (n) + 0xac)
-#define OMAP_DMA4_CDFI(n)		(0x60 * (n) + 0xb0)
-#define OMAP_DMA4_CSAC(n)		(0x60 * (n) + 0xb4)
-#define OMAP_DMA4_CDAC(n)		(0x60 * (n) + 0xb8)
-
-/* Channel specific registers only on omap1 */
-#define OMAP1_DMA_CSSA_L(n)		(0x40 * (n) + 0x08)
-#define OMAP1_DMA_CSSA_U(n)		(0x40 * (n) + 0x0a)
-#define OMAP1_DMA_CDSA_L(n)		(0x40 * (n) + 0x0c)
-#define OMAP1_DMA_CDSA_U(n)		(0x40 * (n) + 0x0e)
-#define OMAP1_DMA_COLOR_L(n)		(0x40 * (n) + 0x20)
-#define OMAP1_DMA_COLOR_U(n)		(0x40 * (n) + 0x22)
-#define OMAP1_DMA_CCR2(n)		(0x40 * (n) + 0x24)
-#define OMAP1_DMA_LCH_CTRL(n)		(0x40 * (n) + 0x2a)	/* not on 15xx */
-#define OMAP1_DMA_CCEN(n)		0
-#define OMAP1_DMA_CCFN(n)		0
-
-/* Channel specific registers only on omap2 */
-#define OMAP_DMA4_CSSA(n)		(0x60 * (n) + 0x9c)
-#define OMAP_DMA4_CDSA(n)		(0x60 * (n) + 0xa0)
-#define OMAP_DMA4_CCEN(n)		(0x60 * (n) + 0xbc)
-#define OMAP_DMA4_CCFN(n)		(0x60 * (n) + 0xc0)
-#define OMAP_DMA4_COLOR(n)		(0x60 * (n) + 0xc4)
-
-/* Additional registers available on OMAP4 */
-#define OMAP_DMA4_CDP(n)		(0x60 * (n) + 0xd0)
-#define OMAP_DMA4_CNDP(n)		(0x60 * (n) + 0xd4)
-#define OMAP_DMA4_CCDN(n)		(0x60 * (n) + 0xd8)
-
-/* Dummy defines to keep multi-omap compiles happy */
-#define OMAP1_DMA_REVISION		0
-#define OMAP1_DMA_IRQSTATUS_L0		0
-#define OMAP1_DMA_IRQENABLE_L0		0
-#define OMAP1_DMA_OCP_SYSCONFIG		0
-#define OMAP_DMA4_HW_ID			0
-#define OMAP_DMA4_CAPS_0_L		0
-#define OMAP_DMA4_CAPS_0_U		0
-#define OMAP_DMA4_CAPS_1_L		0
-#define OMAP_DMA4_CAPS_1_U		0
-#define OMAP_DMA4_GSCR			0
-#define OMAP_DMA4_CPC(n)		0
-
-#define OMAP_DMA4_LCH_CTRL(n)		0
-#define OMAP_DMA4_COLOR_L(n)		0
-#define OMAP_DMA4_COLOR_U(n)		0
-#define OMAP_DMA4_CCR2(n)		0
-#define OMAP1_DMA_CSSA(n)		0
-#define OMAP1_DMA_CDSA(n)		0
-#define OMAP_DMA4_CSSA_L(n)		0
-#define OMAP_DMA4_CSSA_U(n)		0
-#define OMAP_DMA4_CDSA_L(n)		0
-#define OMAP_DMA4_CDSA_U(n)		0
-#define OMAP1_DMA_COLOR(n)		0
-
-/*----------------------------------------------------------------------------*/
-
 /* DMA channels for omap1 */
 #define OMAP_DMA_NO_DEVICE		0
 #define OMAP_DMA_MCSI1_TX		1
@@ -373,21 +242,6 @@ 
 #define DMA_THREAD_FIFO_25		(0x02 << 14)
 #define DMA_THREAD_FIFO_50		(0x03 << 14)
 
-/* DMA4_OCP_SYSCONFIG bits */
-#define DMA_SYSCONFIG_MIDLEMODE_MASK		(3 << 12)
-#define DMA_SYSCONFIG_CLOCKACTIVITY_MASK	(3 << 8)
-#define DMA_SYSCONFIG_EMUFREE			(1 << 5)
-#define DMA_SYSCONFIG_SIDLEMODE_MASK		(3 << 3)
-#define DMA_SYSCONFIG_SOFTRESET			(1 << 2)
-#define DMA_SYSCONFIG_AUTOIDLE			(1 << 0)
-
-#define DMA_SYSCONFIG_MIDLEMODE(n)		((n) << 12)
-#define DMA_SYSCONFIG_SIDLEMODE(n)		((n) << 3)
-
-#define DMA_IDLEMODE_SMARTIDLE			0x2
-#define DMA_IDLEMODE_NO_IDLE			0x1
-#define DMA_IDLEMODE_FORCE_IDLE			0x0
-
 /* Chaining modes*/
 #ifndef CONFIG_ARCH_OMAP1
 #define OMAP_DMA_STATIC_CHAIN		0x1
@@ -480,6 +334,7 @@  struct omap_dma_channel_params {
 #endif
 };
 
+#include <mach/dma.h>
 struct omap_dma_dev_attr {
 	u32 dev_caps;
 	u16 lch_count;
@@ -487,6 +342,12 @@  struct omap_dma_dev_attr {
 	struct omap_dma_lch *chan;
 };
 
+/* System DMA platform data structure */
+struct omap_system_dma_plat_info {
+	struct omap_dma_dev_attr *dma_attr;
+	void __iomem *omap_dma_base;
+};
+
 extern void omap_set_dma_priority(int lch, int dst_port, int priority);
 extern int omap_request_dma(int dev_id, const char *dev_name,
 			void (*callback)(int lch, u16 ch_status, void *data),