[PATCH v4 08/13] OMAP1: DMA: Introduce DMA driver as platform device

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Register OMAP1 DMA driver as platform device and add support
for registering through platform device layer using resource
structures.

Signed-off-by: G, Manjunath Kondaiah <manjugk@xxxxxx>
Cc: Benoit Cousson <b-cousson@xxxxxx>
Cc: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>
Cc: Santosh Shilimkar <santosh.shilimkar@xxxxxx>
---
 arch/arm/mach-omap1/dma.c              |  182 ++++++++++++++++++++++++++++++++
 arch/arm/mach-omap1/include/mach/dma.h |   29 +++++
 2 files changed, 211 insertions(+), 0 deletions(-)
 create mode 100644 arch/arm/mach-omap1/dma.c
 create mode 100644 arch/arm/mach-omap1/include/mach/dma.h

diff --git a/arch/arm/mach-omap1/dma.c b/arch/arm/mach-omap1/dma.c
new file mode 100644
index 0000000..e756069
--- /dev/null
+++ b/arch/arm/mach-omap1/dma.c
@@ -0,0 +1,182 @@
+/*
+ * dma.c - OMAP1/OMAP7xx-specific DMA code
+ *
+ * Copyright (C) 2003 - 2008 Nokia Corporation
+ * Author: Juha Yrjölä <juha.yrjola@xxxxxxxxx>
+ * DMA channel linking for 1610 by Samuel Ortiz <samuel.ortiz@xxxxxxxxx>
+ * Graphics DMA and LCD DMA graphics tranformations
+ * by Imre Deak <imre.deak@xxxxxxxxx>
+ * OMAP2/3 support Copyright (C) 2004-2007 Texas Instruments, Inc.
+ * Some functions based on earlier dma-omap.c Copyright (C) 2001 RidgeRun, Inc.
+ *
+ * Copyright (C) 2010 Texas Instruments, Inc.
+ * Converted DMA library into platform driver
+ *                   - G, Manjunath Kondaiah <manjugk@xxxxxx>
+ *
+ * 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.
+ */
+
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/pm_runtime.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/spinlock.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/device.h>
+
+#include <plat/dma.h>
+#include <plat/tc.h>
+
+#define OMAP1_DMA_BASE			(0xfffed800)
+
+static struct resource res[] __initdata = {
+	[0] = {
+		.start	= OMAP1_DMA_BASE,
+		.end	= OMAP1_DMA_BASE + SZ_2K - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.name   = "0",
+		.start  = INT_DMA_CH0_6,
+		.flags  = IORESOURCE_IRQ,
+	},
+	[2] = {
+		.name   = "1",
+		.start  = INT_DMA_CH1_7,
+		.flags  = IORESOURCE_IRQ,
+	},
+	[3] = {
+		.name   = "2",
+		.start  = INT_DMA_CH2_8,
+		.flags  = IORESOURCE_IRQ,
+	},
+	[4] = {
+		.name   = "3",
+		.start  = INT_DMA_CH3,
+		.flags  = IORESOURCE_IRQ,
+	},
+	[5] = {
+		.name   = "4",
+		.start  = INT_DMA_CH4,
+		.flags  = IORESOURCE_IRQ,
+	},
+	[6] = {
+		.name   = "5",
+		.start  = INT_DMA_CH5,
+		.flags  = IORESOURCE_IRQ,
+	},
+	[7] = {
+		.name   = "6",
+		.start  = INT_DMA_LCD,
+		.flags  = IORESOURCE_IRQ,
+	},
+	/* irq's for omap16xx and omap7xx */
+	[8] = {
+		.name   = "7",
+		.start  = 53 + IH2_BASE,
+		.flags  = IORESOURCE_IRQ,
+	},
+	[9] = {
+		.name   = "8",
+		.start  = 54 + IH2_BASE,
+		.flags  = IORESOURCE_IRQ,
+	},
+	[10] = {
+		.name  = "9",
+		.start = 55 + IH2_BASE,
+		.flags = IORESOURCE_IRQ,
+	},
+	[11] = {
+		.name  = "10",
+		.start = 56 + IH2_BASE,
+		.flags = IORESOURCE_IRQ,
+	},
+	[12] = {
+		.name  = "11",
+		.start = 57 + IH2_BASE,
+		.flags = IORESOURCE_IRQ,
+	},
+	[13] = {
+		.name  = "12",
+		.start = 58 + IH2_BASE,
+		.flags = IORESOURCE_IRQ,
+	},
+	[14] = {
+		.name  = "13",
+		.start = 59 + IH2_BASE,
+		.flags = IORESOURCE_IRQ,
+	},
+	[15] = {
+		.name  = "14",
+		.start = 60 + IH2_BASE,
+		.flags = IORESOURCE_IRQ,
+	},
+	[16] = {
+		.name  = "15",
+		.start = 61 + IH2_BASE,
+		.flags = IORESOURCE_IRQ,
+	},
+	[17] = {
+		.name  = "16",
+		.start = 62 + IH2_BASE,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
+static int __init omap1_system_dma_init(void)
+{
+	struct omap_system_dma_plat_info	*p;
+	struct platform_device			*pdev;
+	int ret;
+
+	pdev = platform_device_alloc("omap_dma_system", 0);
+	if (!pdev) {
+		pr_err("%s: Unable to device alloc for dma\n",
+			__func__);
+		return -ENOMEM;
+	}
+
+	ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
+	if (ret) {
+		pr_err("%s: Unable to add resources for %s%d\n",
+			__func__, pdev->name, pdev->id);
+		goto exit_device_del;
+	}
+
+	p = kzalloc(sizeof(struct omap_system_dma_plat_info), GFP_KERNEL);
+	if (!p) {
+		dev_err(&pdev->dev, "%s: Unable to allocate 'p' for %s\n",
+			__func__, pdev->name);
+		ret = -ENOMEM;
+		goto exit_device_put;
+	}
+
+	ret = platform_device_add_data(pdev, p, sizeof(*p));
+	if (ret) {
+		dev_err(&pdev->dev, "%s: Unable to add resources for %s%d\n",
+			__func__, pdev->name, pdev->id);
+		goto exit_device_put;
+	}
+	ret = platform_device_add(pdev);
+	if (ret) {
+		dev_err(&pdev->dev, "%s: Unable to add resources for %s%d\n",
+			__func__, pdev->name, pdev->id);
+		goto exit_device_put;
+	}
+	return ret;
+
+exit_device_put:
+	platform_device_put(pdev);
+exit_device_del:
+	platform_device_del(pdev);
+
+	return ret;
+}
+arch_initcall(omap1_system_dma_init);
diff --git a/arch/arm/mach-omap1/include/mach/dma.h b/arch/arm/mach-omap1/include/mach/dma.h
new file mode 100644
index 0000000..7949e3f
--- /dev/null
+++ b/arch/arm/mach-omap1/include/mach/dma.h
@@ -0,0 +1,29 @@
+/*
+ *  OMAP DMA controller register offsets.
+ *
+ *  Copyright (C) 2003 Nokia Corporation
+ *  Author: Juha Yrjölä <juha.yrjola@xxxxxxxxx>
+ *
+ *  Copyright (C) 2010 Texas Instruments
+ *  Converted DMA library into platform driver
+ *       by G, Manjunath Kondaiah <manjugk@xxxxxx>
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __ASM_ARCH_OMAP1_DMA_H
+#define __ASM_ARCH_OMAP1_DMA_H
+
+#endif /* __ASM_ARCH_OMAP1_DMA_H */
-- 
1.7.1

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