Merge bk://bk.arm.linux.org.uk/linux-2.5-rmk

into home.transmeta.com:/home/torvalds/v2.5/linux

arch/arm/common/Makefile

@@ -2,7 +2,7 @@
 # Makefile for the linux kernel.
 #
 
+obj-y				+= platform.o
 obj-$(CONFIG_SA1111)		+= sa1111.o sa1111-pcibuf.o sa1111-pcipool.o
-
 obj-$(CONFIG_PCI_HOST_PLX90X0)	+= plx90x0.o
 obj-$(CONFIG_PCI_HOST_VIA82C505) += via82c505.o

arch/arm/common/platform.c

+#include <linux/ioport.h>
+#include <linux/device.h>
+#include <linux/init.h>
+
+int __init platform_add_device(struct platform_device *dev)
+{
+	int i;
+
+	for (i = 0; i < dev->num_resources; i++) {
+		struct resource *r = &dev->resource[i];
+
+		r->name = dev->dev.name;
+
+		if (r->flags & IORESOURCE_MEM &&
+		    request_resource(&iomem_resource, r)) {
+			printk(KERN_ERR
+			       "%s%d: failed to claim resource %d\n",
+			       dev->name, dev->id, i);
+			break;
+		}
+	}
+	if (i == dev->num_resources)
+		platform_device_register(dev);
+	return 0;
+}
+
+int __init platform_add_devices(struct platform_device **devs, int num)
+{
+	int i;
+
+	for (i = 0; i < num; i++)
+		platform_add_device(devs[i]);
+
+	return 0;
+}

arch/arm/common/sa1111.c

@@ -42,7 +42,7 @@
  */
 struct sa1111 {
 	struct device	*dev;
-	struct resource	res;
+	unsigned long	phys;
 	int		irq;
 	spinlock_t	lock;
 	void		*base;
@@ -60,7 +60,6 @@ static struct sa1111_dev usb_dev = {
 	},
 	.skpcr_mask	= SKPCR_UCLKEN,
 	.devid		= SA1111_DEVID_USB,
-	.dma_mask	= 0xffffffffLL,
 	.irq = {
 		IRQ_USBPWR,
 		IRQ_HCIM,
@@ -470,6 +469,17 @@ static void sa1111_wake(struct sa1111 *sachip)
 
 #ifdef CONFIG_ARCH_SA1100
 
+static u32 sa1111_dma_mask[] = {
+	~0,
+	~(1 << 20),
+	~(1 << 23),
+	~(1 << 24),
+	~(1 << 25),
+	~(1 << 20),
+	~(1 << 20),
+	0,
+};
+
 /*
  * Configure the SA1111 shared memory controller.
  */
@@ -483,26 +493,43 @@ sa1111_configure_smc(struct sa1111 *sachip, int sdram, unsigned int drac,
 		smcr |= SMCR_CLAT;
 
 	sa1111_writel(smcr, sachip->base + SA1111_SMCR);
+
+	/*
+	 * Now clear the bits in the DMA mask to work around the SA1111
+	 * DMA erratum (Intel StrongARM SA-1111 Microprocessor Companion
+	 * Chip Specification Update, June 2000, Erratum #7).
+	 */
+	if (sachip->dev->dma_mask)
+		*sachip->dev->dma_mask &= sa1111_dma_mask[drac >> 2];
 }
 
 #endif
 
 static void
-sa1111_init_one_child(struct sa1111 *sachip, struct sa1111_dev *sadev, unsigned int offset)
+sa1111_init_one_child(struct sa1111 *sachip, struct resource *parent,
+		      struct sa1111_dev *sadev, unsigned int offset)
 {
 	snprintf(sadev->dev.bus_id, sizeof(sadev->dev.bus_id),
 		 "%4.4x", offset);
 
+	/*
+	 * If the parent device has a DMA mask associated with it,
+	 * propagate it down to the children.
+	 */
+	if (sachip->dev->dma_mask) {
+		sadev->dma_mask = *sachip->dev->dma_mask;
+		sadev->dev.dma_mask = &sadev->dma_mask;
+	}
+
 	sadev->dev.parent = sachip->dev;
 	sadev->dev.bus    = &sa1111_bus_type;
-	sadev->dev.dma_mask = &sadev->dma_mask;
-	sadev->res.start  = sachip->res.start + offset;
+	sadev->res.start  = sachip->phys + offset;
 	sadev->res.end    = sadev->res.start + 511;
 	sadev->res.name   = sadev->dev.name;
 	sadev->res.flags  = IORESOURCE_MEM;
 	sadev->mapbase    = sachip->base + offset;
 
-	if (request_resource(&sachip->res, &sadev->res)) {
+	if (request_resource(parent, &sadev->res)) {
 		printk("SA1111: failed to allocate resource for %s\n",
 			sadev->res.name);
 		return;
@@ -524,7 +551,7 @@ sa1111_init_one_child(struct sa1111 *sachip, struct sa1111_dev *sadev, unsigned
  *	%0		successful.
  */
 static int __init
-__sa1111_probe(struct device *me, unsigned long phys_addr, int irq)
+__sa1111_probe(struct device *me, struct resource *mem, int irq)
 {
 	struct sa1111 *sachip;
 	unsigned long id;
@@ -542,24 +569,17 @@ __sa1111_probe(struct device *me, unsigned long phys_addr, int irq)
 	sachip->dev = me;
 	dev_set_drvdata(sachip->dev, sachip);
 
-	sachip->res.name  = me->name;
-	sachip->res.start = phys_addr;
-	sachip->res.end   = phys_addr + 0x2000;
+	sachip->phys = mem->start;
 	sachip->irq = irq;
 
-	if (request_resource(&iomem_resource, &sachip->res)) {
-		ret = -EBUSY;
-		goto out;
-	}
-
 	/*
 	 * Map the whole region.  This also maps the
 	 * registers for our children.
 	 */
-	sachip->base = ioremap(phys_addr, PAGE_SIZE * 2);
+	sachip->base = ioremap(mem->start, PAGE_SIZE * 2);
 	if (!sachip->base) {
 		ret = -ENOMEM;
-		goto release;
+		goto out;
 	}
 
 	/*
@@ -611,9 +631,11 @@ __sa1111_probe(struct device *me, unsigned long phys_addr, int irq)
 	 * The interrupt controller must be initialised before any
 	 * other device to ensure that the interrupts are available.
 	 */
+	if (irq != NO_IRQ) {
 		int_dev.irq[0] = irq;
-	sa1111_init_one_child(sachip, &int_dev, SA1111_INTC);
+		sa1111_init_one_child(sachip, mem, &int_dev, SA1111_INTC);
 		sa1111_init_irq(&int_dev);
+	}
 
 	g_sa1111 = sachip;
 
@@ -626,14 +648,12 @@ __sa1111_probe(struct device *me, unsigned long phys_addr, int irq)
 
 	for (i = 0; i < ARRAY_SIZE(devs); i++)
 		if (has_devs & (1 << i))
-			sa1111_init_one_child(sachip, devs[i], dev_offset[i]);
+			sa1111_init_one_child(sachip, mem, devs[i], dev_offset[i]);
 
 	return 0;
 
  unmap:
 	iounmap(sachip->base);
- release:
-	release_resource(&sachip->res);
  out:
 	kfree(sachip);
 	return ret;
@@ -649,7 +669,6 @@ static void __sa1111_remove(struct sa1111 *sachip)
 	}
 
 	iounmap(sachip->base);
-	release_resource(&sachip->res);
 	kfree(sachip);
 }
 
@@ -874,7 +893,17 @@ static int sa1111_resume(struct device *dev, u32 level)
 
 static int sa1111_probe(struct device *dev)
 {
-	return -ENODEV;
+	struct platform_device *pdev = to_platform_device(dev);
+	struct resource *mem = NULL, *irq = NULL;
+	int i;
+
+	for (i = 0; i < pdev->num_resources; i++) {
+		if (pdev->resource[i].flags & IORESOURCE_MEM)
+			mem = &pdev->resource[i];
+		if (pdev->resource[i].flags & IORESOURCE_IRQ)
+			irq = &pdev->resource[i];
+	}
+	return __sa1111_probe(dev, mem, irq ? irq->start : NO_IRQ);
 }
 
 static int sa1111_remove(struct device *dev)
@@ -903,7 +932,7 @@ static int sa1111_remove(struct device *dev)
  */
 static struct device_driver sa1111_device_driver = {
 	.name		= "sa1111",
-	.bus		= &system_bus_type,
+	.bus		= &platform_bus_type,
 	.probe		= sa1111_probe,
 	.remove		= sa1111_remove,
 	.suspend	= sa1111_suspend,
@@ -921,29 +950,6 @@ static int sa1111_driver_init(void)
 
 arch_initcall(sa1111_driver_init);
 
-static struct sys_device sa1111_device = {
-	.name		= "SA1111",
-	.id		= 0,
-	.root		= NULL,
-	.dev = {
-		.name	= "Intel Corporation SA1111",
-		.driver	= &sa1111_device_driver,
-	},
-};
-
-int sa1111_init(unsigned long phys, unsigned int irq)
-{
-	int ret;
-
-	snprintf(sa1111_device.dev.bus_id, sizeof(sa1111_device.dev.bus_id), "%8.8lx", phys);
-
-	ret = sys_device_register(&sa1111_device);
-	if (ret)
-		printk("sa1111 device_register failed: %d\n", ret);
-
-	return __sa1111_probe(&sa1111_device.dev, phys, irq);
-}
-
 /*
  *	Get the parent device driver (us) structure
  *	from a child function device

arch/arm/mach-footbridge/isa-irq.c

@@ -84,10 +84,6 @@ static struct irqchip isa_hi_chip = {
 	.unmask = isa_unmask_pic_hi_irq,
 };
 
-static void no_action(int irq, void *dev_id, struct pt_regs *regs)
-{
-}
-
 static void
 isa_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
 {

arch/arm/mach-integrator/Makefile

@@ -4,10 +4,7 @@
 
 # Object file lists.
 
-obj-y			:= arch.o irq.o mm.o time.o
-obj-m			:=
-obj-n			:=
-obj-			:=
+obj-y			:= core.o time.o
 
 obj-$(CONFIG_LEDS)	+= leds.o
 obj-$(CONFIG_PCI)	+= pci_v3.o pci.o

arch/arm/mach-integrator/arch.c

-/*
- *  linux/arch/arm/mach-integrator/arch.c
- *
- *  Copyright (C) 2000 Deep Blue Solutions Ltd
- *
- * 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
- */
-#include <linux/config.h>
-#include <linux/types.h>
-#include <linux/init.h>
-
-#include <asm/hardware.h>
-#include <asm/irq.h>
-#include <asm/setup.h>
-#include <asm/mach-types.h>
-
-#include <asm/mach/arch.h>
-
-extern void integrator_map_io(void);
-extern void integrator_init_irq(void);
-
-MACHINE_START(INTEGRATOR, "ARM-Integrator")
-	MAINTAINER("ARM Ltd/Deep Blue Solutions Ltd")
-	BOOT_MEM(0x00000000, 0x16000000, 0xf1600000)
-	BOOT_PARAMS(0x00000100)
-	MAPIO(integrator_map_io)
-	INITIRQ(integrator_init_irq)
-MACHINE_END

arch/arm/mach-integrator/mm.c → arch/arm/mach-integrator/core.c

 /*
- *  linux/arch/arm/mach-integrator/mm.c
+ *  linux/arch/arm/mach-integrator/arch.c
  *
- *  Extra MM routines for the ARM Integrator board
- *
- *  Copyright (C) 1999,2000 Arm Limited
  *  Copyright (C) 2000 Deep Blue Solutions Ltd
  *
  * This program is free software; you can redistribute it and/or modify
@@ -20,14 +17,35 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
+#include <linux/config.h>
+#include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
+#include <linux/list.h>
+#include <linux/device.h>
+#include <linux/slab.h>
+#include <linux/string.h>
 
 #include <asm/hardware.h>
 #include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/setup.h>
+#include <asm/mach-types.h>
 
+#include <asm/mach/arch.h>
+#include <asm/mach/irq.h>
 #include <asm/mach/map.h>
 
+/* 
+ * All IO addresses are mapped onto VA 0xFFFx.xxxx, where x.xxxx
+ * is the (PA >> 12).
+ *
+ * Setup a VA for the Integrator interrupt controller (for header #0,
+ * just for now).
+ */
+#define VA_IC_BASE	IO_ADDRESS(INTEGRATOR_IC_BASE) 
+#define VA_CMIC_BASE	IO_ADDRESS(INTEGRATOR_HDR_BASE) + INTEGRATOR_HDR_IC_OFFSET
+
 /*
  * Logical      Physical
  * e8000000	40000000	PCI memory		PHYS_PCI_MEM_BASE	(max 512M)
@@ -64,7 +82,54 @@ static struct map_desc integrator_io_desc[] __initdata = {
  { PCI_IO_VADDR,                      PHYS_PCI_IO_BASE,      SZ_64K, MT_DEVICE }
 };
 
-void __init integrator_map_io(void)
+static void __init integrator_map_io(void)
 {
 	iotable_init(integrator_io_desc, ARRAY_SIZE(integrator_io_desc));
 }
+
+#define ALLPCI ( (1 << IRQ_PCIINT0) | (1 << IRQ_PCIINT1) | (1 << IRQ_PCIINT2) | (1 << IRQ_PCIINT3) ) 
+
+static void sc_mask_irq(unsigned int irq)
+{
+	writel(1 << irq, VA_IC_BASE + IRQ_ENABLE_CLEAR);
+}
+
+static void sc_unmask_irq(unsigned int irq)
+{
+	writel(1 << irq, VA_IC_BASE + IRQ_ENABLE_SET);
+}
+
+static struct irqchip sc_chip = {
+	.ack	= sc_mask_irq,
+	.mask	= sc_mask_irq,
+	.unmask = sc_unmask_irq,
+};
+ 
+static void __init integrator_init_irq(void)
+{
+	unsigned int i;
+
+	/* Disable all interrupts initially. */
+	/* Do the core module ones */
+	writel(-1, VA_CMIC_BASE + IRQ_ENABLE_CLEAR);
+
+	/* do the header card stuff next */
+	writel(-1, VA_IC_BASE + IRQ_ENABLE_CLEAR);
+	writel(-1, VA_IC_BASE + FIQ_ENABLE_CLEAR);
+
+	for (i = 0; i < NR_IRQS; i++) {
+		if (((1 << i) && INTEGRATOR_SC_VALID_INT) != 0) {
+			set_irq_chip(i, &sc_chip);
+			set_irq_handler(i, do_level_IRQ);
+			set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
+		}
+	}
+}
+
+MACHINE_START(INTEGRATOR, "ARM-Integrator")
+	MAINTAINER("ARM Ltd/Deep Blue Solutions Ltd")
+	BOOT_MEM(0x00000000, 0x16000000, 0xf1600000)
+	BOOT_PARAMS(0x00000100)
+	MAPIO(integrator_map_io)
+	INITIRQ(integrator_init_irq)
+MACHINE_END

arch/arm/mach-integrator/irq.c

-/*
- *  linux/arch/arm/mach-integrator/irq.c
- *
- *  Copyright (C) 1999 ARM Limited
- *
- * 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
- */
-#include <linux/init.h>
-#include <linux/list.h>
-
-#include <asm/hardware.h>
-#include <asm/irq.h>
-#include <asm/io.h>
-
-#include <asm/mach/irq.h>
-
-/* 
- * All IO addresses are mapped onto VA 0xFFFx.xxxx, where x.xxxx
- * is the (PA >> 12).
- *
- * Setup a VA for the Integrator interrupt controller (for header #0,
- * just for now).
- */
-#define VA_IC_BASE              IO_ADDRESS(INTEGRATOR_IC_BASE) 
-#define VA_CMIC_BASE            IO_ADDRESS(INTEGRATOR_HDR_BASE) + INTEGRATOR_HDR_IC_OFFSET
-
-#define ALLPCI ( (1 << IRQ_PCIINT0) | (1 << IRQ_PCIINT1) | (1 << IRQ_PCIINT2) | (1 << IRQ_PCIINT3) ) 
-
-static void sc_mask_irq(unsigned int irq)
-{
-        __raw_writel(1 << irq, VA_IC_BASE + IRQ_ENABLE_CLEAR);
-}
-
-static void sc_unmask_irq(unsigned int irq)
-{
-        __raw_writel(1 << irq, VA_IC_BASE + IRQ_ENABLE_SET);
-}
-
-static struct irqchip sc_chip = {
-	.ack	= sc_mask_irq,
-	.mask	= sc_mask_irq,
-	.unmask = sc_unmask_irq,
-};
- 
-void __init integrator_init_irq(void)
-{
-	unsigned int i;
-
-	/* Disable all interrupts initially. */
-	/* Do the core module ones */
-	__raw_writel(-1, VA_CMIC_BASE + IRQ_ENABLE_CLEAR);
-
-	/* do the header card stuff next */
-	__raw_writel(-1, VA_IC_BASE + IRQ_ENABLE_CLEAR);
-	__raw_writel(-1, VA_IC_BASE + FIQ_ENABLE_CLEAR);
-
-	for (i = 0; i < NR_IRQS; i++) {
-	        if (((1 << i) && INTEGRATOR_SC_VALID_INT) != 0) {
-	        	set_irq_chip(i, &sc_chip);
-	        	set_irq_handler(i, do_level_IRQ);
-	        	set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
-		}
-	}
-}

arch/arm/mach-integrator/pci_v3.c

@@ -441,7 +441,7 @@ v3_pci_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
 	return 1;
 }
 
-static void v3_irq(int irq, void *devid, struct pt_regs *regs)
+static irqreturn_t v3_irq(int irq, void *devid, struct pt_regs *regs)
 {
 #ifdef CONFIG_DEBUG_LL
 	unsigned long pc = instruction_pointer(regs);
@@ -469,6 +469,7 @@ static void v3_irq(int irq, void *devid, struct pt_regs *regs)
 		printascii(buf);
 	}
 #endif
+	return IRQ_HANDLED;
 }
 
 int __init pci_v3_setup(int nr, struct pci_sys_data *sys)

arch/arm/mach-pxa/lubbock.c

@@ -88,9 +88,36 @@ static void __init lubbock_init_irq(void)
 	set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
 }
 
+static struct resource sa1111_resources[] = {
+	[0] = {
+		.start	= 0x10000000,
+		.end	= 0x10001fff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= LUBBOCK_SA1111_IRQ,
+		.end	= LUBBOCK_SA1111_IRQ,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device sa1111_device = {
+	.name		= "sa1111",
+	.id		= 0,
+	.dev		= {
+		.name	= "Intel Corporation SA1111",
+	},
+	.num_resources	= ARRAY_SIZE(sa1111_resources),
+	.resource	= sa1111_resources,
+};
+
+static struct platform_device *devices[] __initdata = {
+	&sa1111_device,
+};
+
 static int __init lubbock_init(void)
 {
-	return sa1111_init(0x10000000, LUBBOCK_SA1111_IRQ);
+	return platform_add_devices(devices, ARRAY_SIZE(devices));
 }
 
 subsys_initcall(lubbock_init);

arch/arm/mach-sa1100/adsbitsy.c

@@ -27,6 +27,36 @@
 
 #include "generic.h"
 
+static struct resource sa1111_resources[] = {
+	[0] = {
+		.start		= 0x18000000,
+		.end		= 0x18001fff,
+		.flags		= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= IRQ_GPIO0,
+		.end		= IRQ_GPIO0,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static u64 sa1111_dmamask = 0xffffffffUL;
+
+static struct platform_device sa1111_device = {
+	.name		= "sa1111",
+	.id		= 0,
+	.dev		= {
+		.name	= "Intel Corporation SA1111",
+		.dma_mask = &sa1111_dmamask,
+	},
+	.num_resources	= ARRAY_SIZE(sa1111_resources),
+	.resource	= sa1111_resources,
+};
+
+static struct platform_device *devices[] __initdata = {
+	&sa1111_device,
+};
+
 static int __init adsbitsy_init(void)
 {
 	int ret;
@@ -50,7 +80,7 @@ static int __init adsbitsy_init(void)
 	/*
 	 * Probe for SA1111.
 	 */
-	ret = sa1111_init(0x18000000, IRQ_GPIO0);
+	ret = platform_add_devices(devices, ARRAY_SIZE(devices));
 	if (ret < 0)
 		return ret;
 

arch/arm/mach-sa1100/badge4.c

@@ -35,6 +35,36 @@
 
 #include "generic.h"
 
+static struct resource sa1111_resources[] = {
+	[0] = {
+		.start		= BADGE4_SA1111_BASE,
+		.end		= BADGE4_SA1111_BASE + 0x00001fff,
+		.flags		= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= BADGE4_IRQ_GPIO_SA1111,
+		.end		= BADGE4_IRQ_GPIO_SA1111,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static u64 sa1111_dmamask = 0xffffffffUL;
+
+static struct platform_device sa1111_device = {
+	.name		= "sa1111",
+	.id		= 0,
+	.dev		= {
+		.name	= "Intel Corporation SA1111",
+		.dma_mask = &sa1111_dmamask;
+	},
+	.num_resources	= ARRAY_SIZE(sa1111_resources),
+	.resource	= sa1111_resources,
+};
+
+static struct platform_device *devices[] __initdata = {
+	&sa1111_device,
+};
+
 static int __init badge4_sa1111_init(void)
 {
 	/*
@@ -46,7 +76,7 @@ static int __init badge4_sa1111_init(void)
 	/*
 	 * Probe for SA1111.
 	 */
-	return sa1111_init(BADGE4_SA1111_BASE, BADGE4_IRQ_GPIO_SA1111);
+	return platform_add_devices(devices, ARRAY_SIZE(devices));
 }
 
 

arch/arm/mach-sa1100/dma.c

@@ -42,7 +42,7 @@ static sa1100_dma_t dma_chan[SA1100_DMA_CHANNELS];
 static spinlock_t dma_list_lock;
 
 
-static void dma_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t dma_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
 {
 	dma_regs_t *dma_regs = dev_id;
 	sa1100_dma_t *dma = dma_chan + (((u_int)dma_regs >> 5) & 7);
@@ -60,6 +60,7 @@ static void dma_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
 		if (status & DCSR_DONEB)
 			dma->callback(dma->data);
 	}
+	return IRQ_HANDLED;
 }
 
 

arch/arm/mach-sa1100/generic.c

@@ -16,11 +16,13 @@
 #include <linux/delay.h>
 #include <linux/pm.h>
 #include <linux/cpufreq.h>
+#include <linux/ioport.h>
 
 #include <asm/hardware.h>
 #include <asm/system.h>
 #include <asm/pgtable.h>
 #include <asm/mach/map.h>
+#include <asm/irq.h>
 
 #include "generic.h"
 
@@ -128,13 +130,88 @@ static void sa1100_power_off(void)
 	PMCR = PMCR_SF;
 }
 
+static struct resource sa11x0udc_resources[] = {
+	[0] = {
+		.start	= 0x80000000,
+		.end	= 0x8000ffff,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static struct platform_device sa11x0udc_device = {
+	.name		= "sa11x0-udc",
+	.id		= 0,
+	.dev		= {
+		.name	= "Intel Corporation SA11x0 [UDC]",
+	},
+	.num_resources	= ARRAY_SIZE(sa11x0udc_resources),
+	.resource	= sa11x0udc_resources,
+};
+
+static struct resource sa11x0mcp_resources[] = {
+	[0] = {
+		.start	= 0x80060000,
+		.end	= 0x8006ffff,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static struct platform_device sa11x0mcp_device = {
+	.name		= "sa11x0-mcp",
+	.id		= 0,
+	.dev = {
+		.name	= "Intel Corporation SA11x0 [MCP]",
+	},
+	.num_resources	= ARRAY_SIZE(sa11x0mcp_resources),
+	.resource	= sa11x0mcp_resources,
+};
+
+static struct resource sa11x0fb_resources[] = {
+	[0] = {
+		.start	= 0xb0100000,
+		.end	= 0xb010ffff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= IRQ_LCD,
+		.end	= IRQ_LCD,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device sa11x0fb_device = {
+	.name		= "sa11x0-fb",
+	.id		= 0,
+	.dev		= {
+		.name	= "Intel Corporation SA11x0 [LCD]",
+	},
+	.num_resources	= ARRAY_SIZE(sa11x0fb_resources),
+	.resource	= sa11x0fb_resources,
+};
+
+static struct platform_device sa11x0pcmcia_device = {
+	.name		= "sa11x0-pcmcia",
+	.id		= 0,
+	.dev		= {
+		.name	= "Intel Corporation SA11x0 [PCMCIA]",
+	},
+};
+
+static struct platform_device *sa11x0_devices[] __initdata = {
+	&sa11x0udc_device,
+	&sa11x0mcp_device,
+	&sa11x0pcmcia_device,
+	&sa11x0fb_device,
+};
+
 static int __init sa1100_init(void)
 {
 	pm_power_off = sa1100_power_off;
-	return 0;
+
+	return platform_add_devices(sa11x0_devices, ARRAY_SIZE(sa11x0_devices));
 }
 
-core_initcall(sa1100_init);
+arch_initcall(sa1100_init);
 
 void (*sa1100fb_backlight_power)(int on);
 void (*sa1100fb_lcd_power)(int on);

arch/arm/mach-sa1100/graphicsmaster.c

@@ -24,6 +24,36 @@
 
 #include "generic.h"
 
+static struct resource sa1111_resources[] = {
+	[0] = {
+		.start		= 0x18000000,
+		.end		= 0x18001fff,
+		.flags		= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= ADS_EXT_IRQ(0),
+		.end		= ADS_EXT_IRQ(0),
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static u64 sa1111_dmamask = 0xffffffffUL;
+
+static struct platform_device sa1111_device = {
+	.name		= "sa1111",
+	.id		= 0,
+	.dev		= {
+		.name	= "Intel Corporation SA1111",
+		.dma_mask = &sa1111_dmamask,
+	},
+	.num_resources	= ARRAY_SIZE(sa1111_resources),
+	.resource	= sa1111_resources,
+};
+
+static struct platform_device *devices[] __initdata = {
+	&sa1111_device,
+};
+
 static int __init graphicsmaster_init(void)
 {
 	int ret;
@@ -40,7 +70,7 @@ static int __init graphicsmaster_init(void)
 	/*
 	 * Probe for SA1111.
 	 */
-	ret = sa1111_init(0x18000000, ADS_EXT_IRQ(0));
+	ret = platform_add_devices(devices, ARRAY_SIZE(devices));
 	if (ret < 0)
 		return ret;
 

arch/arm/mach-sa1100/jornada720.c

@@ -24,6 +24,36 @@
 
 #define JORTUCR_VAL	0x20000400
 
+static struct resource sa1111_resources[] = {
+	[0] = {
+		.start		= 0x40000000,
+		.end		= 0x40001fff,
+		.flags		= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= IRQ_GPIO1,
+		.end		= IRQ_GPIO1,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static u64 sa1111_dmamask = 0xffffffffUL;
+
+static struct platform_device sa1111_device = {
+	.name		= "sa1111",
+	.id		= 0,
+	.dev		= {
+		.name	= "Intel Corporation SA1111",
+		.dma_mask = &sa1111_dmamask,
+	},
+	.num_resources	= ARRAY_SIZE(sa1111_resources),
+	.resource	= sa1111_resources,
+};
+
+static struct platform_device *devices[] __initdata = {
+	&sa1111_device,
+};
+
 static int __init jornada720_init(void)
 {
 	int ret = -ENODEV;
@@ -43,7 +73,7 @@ static int __init jornada720_init(void)
 		PPSR &= ~(PPC_LDD3 | PPC_LDD4);
 		PPDR |= PPC_LDD3 | PPC_LDD4;
 
-		ret = sa1111_init(0x40000000, IRQ_GPIO1);
+		ret = platform_add_devices(devices, ARRAY_SIZE(devices));
 	}
 	return ret;
 }

arch/arm/mach-sa1100/neponset.c

@@ -79,33 +79,6 @@ neponset_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *reg
 	}
 }
 
-static inline void __init neponset_init_irq(void)
-{
-	/*
-	 * Install handler for GPIO25.
-	 */
-	set_irq_type(IRQ_GPIO25, IRQT_RISING);
-	set_irq_chained_handler(IRQ_GPIO25, neponset_irq_handler);
-
-	/*
-	 * We would set IRQ_GPIO25 to be a wake-up IRQ, but
-	 * unfortunately something on the Neponset activates
-	 * this IRQ on sleep (ethernet?)
-	 */
-#if 0
-	enable_irq_wake(IRQ_GPIO25);
-#endif
-
-	/*
-	 * Setup other Neponset IRQs.  SA1111 will be done by the
-	 * generic SA1111 code.
-	 */
-	set_irq_handler(IRQ_NEPONSET_SMC9196, do_simple_IRQ);
-	set_irq_flags(IRQ_NEPONSET_SMC9196, IRQF_VALID | IRQF_PROBE);
-	set_irq_handler(IRQ_NEPONSET_USAR, do_simple_IRQ);
-	set_irq_flags(IRQ_NEPONSET_USAR, IRQF_VALID | IRQF_PROBE);
-}
-
 static void neponset_set_mctrl(struct uart_port *port, u_int mctrl)
 {
 	u_int mdm_ctl0 = MDM_CTL_0;
@@ -164,6 +137,42 @@ static struct sa1100_port_fns neponset_port_fns __initdata = {
 	.get_mctrl	= neponset_get_mctrl,
 };
 
+static int neponset_probe(struct device *dev)
+{
+	sa1100_register_uart_fns(&neponset_port_fns);
+
+	/*
+	 * Install handler for GPIO25.
+	 */
+	set_irq_type(IRQ_GPIO25, IRQT_RISING);
+	set_irq_chained_handler(IRQ_GPIO25, neponset_irq_handler);
+
+	/*
+	 * We would set IRQ_GPIO25 to be a wake-up IRQ, but
+	 * unfortunately something on the Neponset activates
+	 * this IRQ on sleep (ethernet?)
+	 */
+#if 0
+	enable_irq_wake(IRQ_GPIO25);
+#endif
+
+	/*
+	 * Setup other Neponset IRQs.  SA1111 will be done by the
+	 * generic SA1111 code.
+	 */
+	set_irq_handler(IRQ_NEPONSET_SMC9196, do_simple_IRQ);
+	set_irq_flags(IRQ_NEPONSET_SMC9196, IRQF_VALID | IRQF_PROBE);
+	set_irq_handler(IRQ_NEPONSET_USAR, do_simple_IRQ);
+	set_irq_flags(IRQ_NEPONSET_USAR, IRQF_VALID | IRQF_PROBE);
+
+	/*
+	 * Disable GPIO 0/1 drivers so the buttons work on the module.
+	 */
+	NCR_0 = NCR_GP01_OFF;
+
+	return 0;
+}
+
 /*
  * LDM power management.
  */
@@ -201,27 +210,63 @@ static int neponset_resume(struct device *dev, u32 level)
 
 static struct device_driver neponset_device_driver = {
 	.name		= "neponset",
-	.bus		= &system_bus_type,
+	.bus		= &platform_bus_type,
+	.probe		= neponset_probe,
 	.suspend	= neponset_suspend,
 	.resume		= neponset_resume,
 };
 
-static struct sys_device neponset_device = {
-	.name		= "NEPONSET",
+static struct resource neponset_resources[] = {
+	[0] = {
+		.start	= 0x10000000,
+		.end	= 0x17ffffff,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static struct platform_device neponset_device = {
+	.name		= "neponset",
 	.id		= 0,
-	.root		= NULL,
 	.dev = {
 		.name	= "Neponset",
-		.bus_id	= "neponset",
-		.bus	= &system_bus_type,
-		.driver = &neponset_device_driver,
 	},
+	.num_resources	= ARRAY_SIZE(neponset_resources),
+	.resource	= neponset_resources,
+};
+
+static struct resource sa1111_resources[] = {
+	[0] = {
+		.start	= 0x40000000,
+		.end	= 0x40001fff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= IRQ_NEPONSET_SA1111,
+		.end	= IRQ_NEPONSET_SA1111,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static u64 sa1111_dmamask = 0xffffffffUL;
+
+static struct platform_device sa1111_device = {
+	.name		= "sa1111",
+	.id		= 0,
+	.dev		= {
+		.name	= "Intel Corporation SA1111",
+		.dma_mask = &sa1111_dmamask,
+	},
+	.num_resources	= ARRAY_SIZE(sa1111_resources),
+	.resource	= sa1111_resources,
+};
+
+static struct platform_device *devices[] __initdata = {
+	&neponset_device,
+	&sa1111_device,
 };
 
 static int __init neponset_init(void)
 {
-	int ret;
-
 	driver_register(&neponset_device_driver);
 
 	/*
@@ -248,29 +293,7 @@ static int __init neponset_init(void)
 		return -ENODEV;
 	}
 
-	ret = sys_device_register(&neponset_device);
-	if (ret)
-		return ret;
-
-	sa1100_register_uart_fns(&neponset_port_fns);
-
-	neponset_init_irq();
-
-	/*
-	 * Disable GPIO 0/1 drivers so the buttons work on the module.
-	 */
-	NCR_0 = NCR_GP01_OFF;
-
-	/*
-	 * Neponset has SA1111 connected to CS4.  We know that after
-	 * reset the chip will be configured for variable latency IO.
-	 */
-	/* FIXME: setup MSC2 */
-
-	/*
-	 * Probe and initialise the SA1111.
-	 */
-	return sa1111_init(0x40000000, IRQ_NEPONSET_SA1111);
+	return platform_add_devices(devices, ARRAY_SIZE(devices));
 }
 
 subsys_initcall(neponset_init);

arch/arm/mach-sa1100/pfs168.c

@@ -7,6 +7,7 @@
 #include <linux/tty.h>
 #include <linux/errno.h>
 #include <linux/ioport.h>
+#include <linux/device.h>
 
 #include <asm/hardware.h>
 #include <asm/mach-types.h>
@@ -18,6 +19,35 @@
 
 #include "generic.h"
 
+static struct resource sa1111_resources[] = {
+	[0] = {
+		.start		= 0x40000000,
+		.end		= 0x40001fff,
+		.flags		= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= IRQ_GPIO25,
+		.end		= IRQ_GPIO25,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static u64 sa1111_dmamask = 0xffffffffUL;
+
+static struct platform_device sa1111_device = {
+	.name		= "sa1111",
+	.id		= 0,
+	.dev		= {
+		.name	= "Intel Corporation SA1111",
+		.dma_mask = &sa1111_dmamask,
+	},
+	.num_resources	= ARRAY_SIZE(sa1111_resources),
+	.resource	= sa1111_resources,
+};
+
+static struct platform_device *devices[] __initdata = {
+	&sa1111_device,
+};
 
 static int __init pfs168_init(void)
 {
@@ -32,10 +62,7 @@ static int __init pfs168_init(void)
 	 */
 	sa1110_mb_disable();
 
-	/*
-	 * Probe for SA1111.
-	 */
-	return sa1111_init(0x40000000, IRQ_GPIO25);
+	return platform_add_devices(devices, ARRAY_SIZE(devices));
 }
 
 arch_initcall(pfs168_init);

arch/arm/mach-sa1100/system3.c

@@ -373,6 +373,36 @@ static void system3_backlight_power(int on)
 	}
 }
 
+static struct resource sa1111_resources[] = {
+	[0] = {
+		.start		= PT_SA1111_BASE,
+		.end		= PT_SA1111_BASE + 0x00001fff,
+		.flags		= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= IRQ_SYSTEM3_SA1111,
+		.end		= IRQ_SYSTEM3_SA1111,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static u64 sa1111_dmamask = 0xffffffffUL;
+
+static struct platform_device sa1111_device = {
+	.name		= "sa1111",
+	.id		= 0,
+	.dev		= {
+		.name	= "Intel Corporation SA1111",
+		.dma_mask = &sa1111_dmamask,
+	},
+	.num_resources	= ARRAY_SIZE(sa1111_resources),
+	.resource	= sa1111_resources,
+};
+
+static struct platform_device *devices[] __initdata = {
+	&sa1111_device,
+};
+
 static int __init system3_init(void)
 {
 	int ret = 0;
@@ -405,7 +435,7 @@ static int __init system3_init(void)
 	/*
 	 * Probe for a SA1111.
 	 */
-	ret = sa1111_init(PT_SA1111_BASE, IRQ_SYSTEM3_SA1111);
+	ret = platform_add_devices(devices, ARRAY_SIZE(devices));
 	if (ret < 0) {
 		printk( KERN_WARNING"PT Digital Board: no SA1111 found!\n" );
 		goto DONE;

arch/arm/mach-sa1100/xp860.c

@@ -30,6 +30,31 @@ static void xp860_power_off(void)
 	while(1);
 }
 
+static struct resource sa1111_resources[] = {
+	[0] = {
+		.start		= 0x40000000,
+		.end		= 0x40001fff,
+		.flags		= IORESOURCE_MEM,
+	},
+};
+
+static u64 sa1111_dmamask = 0xffffffffUL;
+
+static struct platform_device sa1111_device = {
+	.name		= "sa1111",
+	.id		= 0,
+	.dev		= {
+		.name	= "Intel Corporation SA1111",
+		.dma_mask = &sa1111_dmamask,
+	},
+	.num_resources	= ARRAY_SIZE(sa1111_resources),
+	.resource	= sa1111_resources,
+};
+
+static struct platform_device *devices[] __initdata = {
+	&sa1111_device,
+};
+
 /*
  * Note: I replaced the sa1111_init() without the full SA1111 initialisation
  * because this machine doesn't appear to use the DMA features.  If this is
@@ -39,19 +64,7 @@ static int __init xp860_init(void)
 {
 	pm_power_off = xp860_power_off;
 
-	/*
-	 * Probe for SA1111.
-	 */
-	ret = sa1111_probe(0x40000000);
-	if (ret < 0)
-		return ret;
-
-	/*
-	 * We found it.  Wake the chip up.
-	 */
-	sa1111_wake();
-
-	return 0;
+	return platform_add_devices(devices, ARRAY_SIZE(devices));
 }
 
 arch_initcall(xp860_init);

arch/arm/mm/consistent.c

@@ -10,7 +10,7 @@
  *  DMA uncached mapping support.
  */
 #include <linux/config.h>
-#include <linux/types.h>
+#include <linux/module.h>
 #include <linux/mm.h>
 #include <linux/slab.h>
 #include <linux/string.h>
@@ -145,6 +145,7 @@ void *consistent_alloc(int gfp, size_t size, dma_addr_t *handle,
 	struct vm_region *c;
 	unsigned long order, flags;
 	void *ret = NULL;
+	int res;
 
 	if (!consistent_pte) {
 		printk(KERN_ERR "consistent_alloc: not initialised\n");
@@ -177,14 +178,19 @@ void *consistent_alloc(int gfp, size_t size, dma_addr_t *handle,
 	if (!c)
 		goto no_remap;
 
-	spin_lock_irqsave(&consistent_lock, flags);
-	vm_region_dump(&consistent_head, "before alloc");
-
 	/*
 	 * Attempt to allocate a virtual address in the
 	 * consistent mapping region.
 	 */
-	if (!vm_region_alloc(&consistent_head, c, size)) {
+	spin_lock_irqsave(&consistent_lock, flags);
+	vm_region_dump(&consistent_head, "before alloc");
+
+	res = vm_region_alloc(&consistent_head, c, size);
+
+	vm_region_dump(&consistent_head, "after alloc");
+	spin_unlock_irqrestore(&consistent_lock, flags);
+
+	if (!res) {
 		pte_t *pte = consistent_pte + CONSISTENT_OFFSET(c->vm_start);
 		struct page *end = page + (1 << order);
 		pgprot_t prot = __pgprot(L_PTE_PRESENT | L_PTE_YOUNG |
@@ -218,9 +224,6 @@ void *consistent_alloc(int gfp, size_t size, dma_addr_t *handle,
 		ret = (void *)c->vm_start;
 	}
 
-	vm_region_dump(&consistent_head, "after alloc");
-	spin_unlock_irqrestore(&consistent_lock, flags);
-
  no_remap:
 	if (ret == NULL) {
 		kfree(c);
@@ -230,6 +233,22 @@ void *consistent_alloc(int gfp, size_t size, dma_addr_t *handle,
 	return ret;
 }
 
+/*
+ * Since we have the DMA mask available to us here, we could try to do
+ * a normal allocation, and only fall back to a "DMA" allocation if the
+ * resulting bus address does not satisfy the dma_mask requirements.
+ */
+void *
+dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *handle, int gfp)
+{
+	if (dev == NULL || *dev->dma_mask != 0xffffffff)
+		gfp |= GFP_DMA;
+
+	return consistent_alloc(gfp, size, handle, 0);
+}
+
+EXPORT_SYMBOL(dma_alloc_coherent);
+
 /*
  * free a page as defined by the above mapping.
  */

drivers/video/sa1100fb.c

@@ -1753,25 +1753,7 @@ static struct sa1100fb_info * __init sa1100fb_init_fbinfo(void)
 	return fbi;
 }
 
-static struct device_driver sa1100fb_driver = {
-	.name		= "sa1100fb",
-	.bus		= &system_bus_type,
-	.suspend	= sa1100fb_suspend,
-	.resume		= sa1100fb_resume,
-};
-
-static struct sys_device sa1100fb_dev = {
-	.name	= "LCD",
-	.id	= 0,
-	.root	= NULL,
-	.dev	= {
-		.name	= "Intel Corporation SA11x0 [LCD]",
-		.bus_id	= "b0100000",
-		.driver	= &sa1100fb_driver,
-	},
-};
-
-int __init sa1100fb_init(void)
+static int __init sa1100fb_probe(struct device *dev)
 {
 	struct sa1100fb_info *fbi;
 	int ret;
@@ -1779,16 +1761,11 @@ int __init sa1100fb_init(void)
 	if (!request_mem_region(0xb0100000, 0x10000, "LCD"))
 		return -EBUSY;
 
-	driver_register(&sa1100fb_driver);
-	sys_device_register(&sa1100fb_dev);
-
 	fbi = sa1100fb_init_fbinfo();
 	ret = -ENOMEM;
 	if (!fbi)
 		goto failed;
 
-	dev_set_drvdata(&sa1100fb_dev.dev, fbi);
-
 	/* Initialize video memory */
 	ret = sa1100fb_map_video_memory(fbi);
 	if (ret)
@@ -1822,6 +1799,8 @@ int __init sa1100fb_init(void)
 	 */
 	sa1100fb_check_var(&fbi->fb.var, &fbi->fb);
 
+	dev_set_drvdata(dev, fbi);
+
 	ret = register_framebuffer(&fbi->fb);
 	if (ret < 0)
 		goto failed;
@@ -1839,14 +1818,26 @@ int __init sa1100fb_init(void)
 	return 0;
 
 failed:
-	sys_device_unregister(&sa1100fb_dev);
-	driver_unregister(&sa1100fb_driver);
+	dev_set_drvdata(dev, NULL);
 	if (fbi)
 		kfree(fbi);
 	release_mem_region(0xb0100000, 0x10000);
 	return ret;
 }
 
+static struct device_driver sa1100fb_driver = {
+	.name		= "sa11x0-fb",
+	.bus		= &platform_bus_type,
+	.probe		= sa1100fb_probe,
+	.suspend	= sa1100fb_suspend,
+	.resume		= sa1100fb_resume,
+};
+
+int __init sa1100fb_init(void)
+{
+	return driver_register(&sa1100fb_driver);
+}
+
 int __init sa1100fb_setup(char *options)
 {
 #if 0

include/asm-arm/dma-mapping.h

@@ -42,12 +42,12 @@ extern struct bus_type sa1111_bus_type;
 /*
  * Return whether the given device DMA address mask can be supported
  * properly.  For example, if your device can only drive the low 24-bits
- * during PCI bus mastering, then you would pass 0x00ffffff as the mask
+ * during bus mastering, then you would pass 0x00ffffff as the mask
  * to this function.
  */
 static inline int dma_supported(struct device *dev, u64 mask)
 {
-	return 1;
+	return dev->dma_mask && *dev->dma_mask != 0;
 }
 
 static inline int dma_set_mask(struct device *dev, u64 dma_mask)
@@ -81,14 +81,8 @@ static inline int dma_is_consistent(dma_addr_t handle)
  * return the CPU-viewed address, and sets @handle to be the
  * device-viewed address.
  */
-static inline void *
-dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *handle, int gfp)
-{
-	if (dev == NULL || dmadev_is_sa1111(dev) || *dev->dma_mask != 0xffffffff)
-		gfp |= GFP_DMA;
-
-	return consistent_alloc(gfp, size, handle, 0);
-}
+extern void *
+dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *handle, int gfp);
 
 /**
  * dma_free_coherent - free memory allocated by dma_alloc_coherent

include/asm-arm/hardware.h

@@ -15,4 +15,13 @@
 
 #include <asm/arch/hardware.h>
 
+#ifndef __ASSEMBLY__
+
+struct platform_device;
+
+extern int platform_add_devices(struct platform_device *, int);
+extern int platform_add_device(struct platform_device *);
+
+#endif
+
 #endif

include/linux/device.h

@@ -385,6 +385,8 @@ struct platform_device {
 	struct resource	* resource;
 };
 
+#define to_platform_device(x) container_of((x), struct platform_device, dev)
+
 extern int platform_device_register(struct platform_device *);
 extern void platform_device_unregister(struct platform_device *);