arch/arm/mach-pxa/generic.c - kernel/msm - Gitiles

 /*
  *  linux/arch/arm/mach-pxa/generic.c
  *
  *  Author:	Nicolas Pitre
  *  Created:	Jun 15, 2001
  *  Copyright:	MontaVista Software Inc.
  *
  * Code common to all PXA machines.
  *
  * 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.
  *
  * Since this file should be linked before any other machine specific file,
  * the __initcall() here will be executed first.  This serves as default
  * initialization stuff for PXA machines which can be overridden later if
  * need be.
  */
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/platform_device.h>
 #include <linux/ioport.h>
 #include <linux/pm.h>
 #include <linux/string.h>

 #include <asm/hardware.h>
 #include <asm/irq.h>
 #include <asm/system.h>
 #include <asm/pgtable.h>
 #include <asm/mach/map.h>

 #include <asm/arch/pxa-regs.h>
 #include <asm/arch/udc.h>
 #include <asm/arch/pxafb.h>
 #include <asm/arch/mmc.h>
 #include <asm/arch/irda.h>
 #include <asm/arch/i2c.h>

 #include "generic.h"

 /*
  * Handy function to set GPIO alternate functions
  */

 void pxa_gpio_mode(int gpio_mode)
 {
 	unsigned long flags;
 	int gpio = gpio_mode & GPIO_MD_MASK_NR;
 	int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8;
 	int gafr;

 	local_irq_save(flags);
 	if (gpio_mode & GPIO_DFLT_LOW)
 		GPCR(gpio) = GPIO_bit(gpio);
 	else if (gpio_mode & GPIO_DFLT_HIGH)
 		GPSR(gpio) = GPIO_bit(gpio);
 	if (gpio_mode & GPIO_MD_MASK_DIR)
 		GPDR(gpio) |= GPIO_bit(gpio);
 	else
 		GPDR(gpio) &= ~GPIO_bit(gpio);
 	gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2));
 	GAFR(gpio) = gafr |  (fn  << (((gpio) & 0xf)*2));
 	local_irq_restore(flags);
 }

 EXPORT_SYMBOL(pxa_gpio_mode);

 /*
  * Routine to safely enable or disable a clock in the CKEN
  */
 void pxa_set_cken(int clock, int enable)
 {
 	unsigned long flags;
 	local_irq_save(flags);

 	if (enable)
 		CKEN |= clock;
 	else
 		CKEN &= ~clock;

 	local_irq_restore(flags);
 }

 EXPORT_SYMBOL(pxa_set_cken);

 /*
  * Intel PXA2xx internal register mapping.
  *
  * Note 1: not all PXA2xx variants implement all those addresses.
  *
  * Note 2: virtual 0xfffe0000-0xffffffff is reserved for the vector table
  *         and cache flush area.
  */
 static struct map_desc standard_io_desc[] __initdata = {
   	{	/* Devs */
 		.virtual	=  0xf2000000,
 		.pfn		= __phys_to_pfn(0x40000000),
 		.length		= 0x02000000,
 		.type		= MT_DEVICE
 	}, {	/* LCD */
 		.virtual	=  0xf4000000,
 		.pfn		= __phys_to_pfn(0x44000000),
 		.length		= 0x00100000,
 		.type		= MT_DEVICE
 	}, {	/* Mem Ctl */
 		.virtual	=  0xf6000000,
 		.pfn		= __phys_to_pfn(0x48000000),
 		.length		= 0x00100000,
 		.type		= MT_DEVICE
 	}, {	/* USB host */
 		.virtual	=  0xf8000000,
 		.pfn		= __phys_to_pfn(0x4c000000),
 		.length		= 0x00100000,
 		.type		= MT_DEVICE
 	}, {	/* Camera */
 		.virtual	=  0xfa000000,
 		.pfn		= __phys_to_pfn(0x50000000),
 		.length		= 0x00100000,
 		.type		= MT_DEVICE
 	}, {	/* IMem ctl */
 		.virtual	=  0xfe000000,
 		.pfn		= __phys_to_pfn(0x58000000),
 		.length		= 0x00100000,
 		.type		= MT_DEVICE
 	}, {	/* UNCACHED_PHYS_0 */
 		.virtual	= 0xff000000,
 		.pfn		= __phys_to_pfn(0x00000000),
 		.length		= 0x00100000,
 		.type		= MT_DEVICE
 	}
 };

 void __init pxa_map_io(void)
 {
 	iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
 	get_clk_frequency_khz(1);
 }


 static struct resource pxamci_resources[] = {
 	[0] = {
 		.start	= 0x41100000,
 		.end	= 0x41100fff,
 		.flags	= IORESOURCE_MEM,
 	},
 	[1] = {
 		.start	= IRQ_MMC,
 		.end	= IRQ_MMC,
 		.flags	= IORESOURCE_IRQ,
 	},
 };

 static u64 pxamci_dmamask = 0xffffffffUL;

 static struct platform_device pxamci_device = {
 	.name		= "pxa2xx-mci",
 	.id		= -1,
 	.dev		= {
 		.dma_mask = &pxamci_dmamask,
 		.coherent_dma_mask = 0xffffffff,
 	},
 	.num_resources	= ARRAY_SIZE(pxamci_resources),
 	.resource	= pxamci_resources,
 };

 void __init pxa_set_mci_info(struct pxamci_platform_data *info)
 {
 	pxamci_device.dev.platform_data = info;
 }


 static struct pxa2xx_udc_mach_info pxa_udc_info;

 void __init pxa_set_udc_info(struct pxa2xx_udc_mach_info *info)
 {
 	memcpy(&pxa_udc_info, info, sizeof *info);
 }

 static struct resource pxa2xx_udc_resources[] = {
 	[0] = {
 		.start	= 0x40600000,
 		.end	= 0x4060ffff,
 		.flags	= IORESOURCE_MEM,
 	},
 	[1] = {
 		.start	= IRQ_USB,
 		.end	= IRQ_USB,
 		.flags	= IORESOURCE_IRQ,
 	},
 };

 static u64 udc_dma_mask = ~(u32)0;

 static struct platform_device udc_device = {
 	.name		= "pxa2xx-udc",
 	.id		= -1,
 	.resource	= pxa2xx_udc_resources,
 	.num_resources	= ARRAY_SIZE(pxa2xx_udc_resources),
 	.dev		=  {
 		.platform_data	= &pxa_udc_info,
 		.dma_mask	= &udc_dma_mask,
 	}
 };

 static struct resource pxafb_resources[] = {
 	[0] = {
 		.start	= 0x44000000,
 		.end	= 0x4400ffff,
 		.flags	= IORESOURCE_MEM,
 	},
 	[1] = {
 		.start	= IRQ_LCD,
 		.end	= IRQ_LCD,
 		.flags	= IORESOURCE_IRQ,
 	},
 };

 static u64 fb_dma_mask = ~(u64)0;

 static struct platform_device pxafb_device = {
 	.name		= "pxa2xx-fb",
 	.id		= -1,
 	.dev		= {
 		.dma_mask	= &fb_dma_mask,
 		.coherent_dma_mask = 0xffffffff,
 	},
 	.num_resources	= ARRAY_SIZE(pxafb_resources),
 	.resource	= pxafb_resources,
 };

 void __init set_pxa_fb_info(struct pxafb_mach_info *info)
 {
 	pxafb_device.dev.platform_data = info;
 }

 void __init set_pxa_fb_parent(struct device *parent_dev)
 {
 	pxafb_device.dev.parent = parent_dev;
 }

 static struct platform_device ffuart_device = {
 	.name		= "pxa2xx-uart",
 	.id		= 0,
 };
 static struct platform_device btuart_device = {
 	.name		= "pxa2xx-uart",
 	.id		= 1,
 };
 static struct platform_device stuart_device = {
 	.name		= "pxa2xx-uart",
 	.id		= 2,
 };
 static struct platform_device hwuart_device = {
 	.name		= "pxa2xx-uart",
 	.id		= 3,
 };

 static struct resource i2c_resources[] = {
 	{
 		.start	= 0x40301680,
 		.end	= 0x403016a3,
 		.flags	= IORESOURCE_MEM,
 	}, {
 		.start	= IRQ_I2C,
 		.end	= IRQ_I2C,
 		.flags	= IORESOURCE_IRQ,
 	},
 };

 static struct platform_device i2c_device = {
 	.name		= "pxa2xx-i2c",
 	.id		= 0,
 	.resource	= i2c_resources,
 	.num_resources	= ARRAY_SIZE(i2c_resources),
 };

 void __init pxa_set_i2c_info(struct i2c_pxa_platform_data *info)
 {
 	i2c_device.dev.platform_data = info;
 }

 static struct resource i2s_resources[] = {
 	{
 		.start	= 0x40400000,
 		.end	= 0x40400083,
 		.flags	= IORESOURCE_MEM,
 	}, {
 		.start	= IRQ_I2S,
 		.end	= IRQ_I2S,
 		.flags	= IORESOURCE_IRQ,
 	},
 };

 static struct platform_device i2s_device = {
 	.name		= "pxa2xx-i2s",
 	.id		= -1,
 	.resource	= i2s_resources,
 	.num_resources	= ARRAY_SIZE(i2s_resources),
 };

 static u64 pxaficp_dmamask = ~(u32)0;

 static struct platform_device pxaficp_device = {
 	.name		= "pxa2xx-ir",
 	.id		= -1,
 	.dev		= {
 		.dma_mask = &pxaficp_dmamask,
 		.coherent_dma_mask = 0xffffffff,
 	},
 };

 void __init pxa_set_ficp_info(struct pxaficp_platform_data *info)
 {
 	pxaficp_device.dev.platform_data = info;
 }

 static struct platform_device pxartc_device = {
 	.name		= "sa1100-rtc",
 	.id		= -1,
 };

 static struct platform_device *devices[] __initdata = {
 	&pxamci_device,
 	&udc_device,
 	&pxafb_device,
 	&ffuart_device,
 	&btuart_device,
 	&stuart_device,
 	&pxaficp_device,
 	&i2c_device,
 	&i2s_device,
 	&pxartc_device,
 };

 static int __init pxa_init(void)
 {
 	int cpuid, ret;

 	ret = platform_add_devices(devices, ARRAY_SIZE(devices));
 	if (ret)
 		return ret;

 	/* Only add HWUART for PXA255/26x; PXA210/250/27x do not have it. */
 	cpuid = read_cpuid(CPUID_ID);
 	if (((cpuid >> 4) & 0xfff) == 0x2d0 ||
 	    ((cpuid >> 4) & 0xfff) == 0x290)
 		ret = platform_device_register(&hwuart_device);

 	return ret;
 }

 subsys_initcall(pxa_init);
	/*
	* linux/arch/arm/mach-pxa/generic.c
	*
	* Author: Nicolas Pitre
	* Created: Jun 15, 2001
	* Copyright: MontaVista Software Inc.
	*
	* Code common to all PXA machines.
	*
	* 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.
	*
	* Since this file should be linked before any other machine specific file,
	* the __initcall() here will be executed first. This serves as default
	* initialization stuff for PXA machines which can be overridden later if
	* need be.
	*/
	#include <linux/module.h>
	#include <linux/kernel.h>
	#include <linux/init.h>
	#include <linux/delay.h>
	#include <linux/platform_device.h>
	#include <linux/ioport.h>
	#include <linux/pm.h>
	#include <linux/string.h>

	#include <asm/hardware.h>
	#include <asm/irq.h>
	#include <asm/system.h>
	#include <asm/pgtable.h>
	#include <asm/mach/map.h>

	#include <asm/arch/pxa-regs.h>
	#include <asm/arch/udc.h>
	#include <asm/arch/pxafb.h>
	#include <asm/arch/mmc.h>
	#include <asm/arch/irda.h>
	#include <asm/arch/i2c.h>

	#include "generic.h"

	/*
	* Handy function to set GPIO alternate functions
	*/

	void pxa_gpio_mode(int gpio_mode)
	{
	unsigned long flags;
	int gpio = gpio_mode & GPIO_MD_MASK_NR;
	int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8;
	int gafr;

	local_irq_save(flags);
	if (gpio_mode & GPIO_DFLT_LOW)
	GPCR(gpio) = GPIO_bit(gpio);
	else if (gpio_mode & GPIO_DFLT_HIGH)
	GPSR(gpio) = GPIO_bit(gpio);
	if (gpio_mode & GPIO_MD_MASK_DIR)
	GPDR(gpio) \|= GPIO_bit(gpio);
	else
	GPDR(gpio) &= ~GPIO_bit(gpio);
	gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2));
	GAFR(gpio) = gafr \| (fn << (((gpio) & 0xf)*2));
	local_irq_restore(flags);
	}

	EXPORT_SYMBOL(pxa_gpio_mode);

	/*
	* Routine to safely enable or disable a clock in the CKEN
	*/
	void pxa_set_cken(int clock, int enable)
	{
	unsigned long flags;
	local_irq_save(flags);

	if (enable)
	CKEN \|= clock;
	else
	CKEN &= ~clock;

	local_irq_restore(flags);
	}

	EXPORT_SYMBOL(pxa_set_cken);

	/*
	* Intel PXA2xx internal register mapping.
	*
	* Note 1: not all PXA2xx variants implement all those addresses.
	*
	* Note 2: virtual 0xfffe0000-0xffffffff is reserved for the vector table
	* and cache flush area.
	*/
	static struct map_desc standard_io_desc[] __initdata = {
	{ /* Devs */
	.virtual = 0xf2000000,
	.pfn = __phys_to_pfn(0x40000000),
	.length = 0x02000000,
	.type = MT_DEVICE
	}, { /* LCD */
	.virtual = 0xf4000000,
	.pfn = __phys_to_pfn(0x44000000),
	.length = 0x00100000,
	.type = MT_DEVICE
	}, { /* Mem Ctl */
	.virtual = 0xf6000000,
	.pfn = __phys_to_pfn(0x48000000),
	.length = 0x00100000,
	.type = MT_DEVICE
	}, { /* USB host */
	.virtual = 0xf8000000,
	.pfn = __phys_to_pfn(0x4c000000),
	.length = 0x00100000,
	.type = MT_DEVICE
	}, { /* Camera */
	.virtual = 0xfa000000,
	.pfn = __phys_to_pfn(0x50000000),
	.length = 0x00100000,
	.type = MT_DEVICE
	}, { /* IMem ctl */
	.virtual = 0xfe000000,
	.pfn = __phys_to_pfn(0x58000000),
	.length = 0x00100000,
	.type = MT_DEVICE
	}, { /* UNCACHED_PHYS_0 */
	.virtual = 0xff000000,
	.pfn = __phys_to_pfn(0x00000000),
	.length = 0x00100000,
	.type = MT_DEVICE
	}
	};

	void __init pxa_map_io(void)
	{
	iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
	get_clk_frequency_khz(1);
	}


	static struct resource pxamci_resources[] = {
	[0] = {
	.start = 0x41100000,
	.end = 0x41100fff,
	.flags = IORESOURCE_MEM,
	},
	[1] = {
	.start = IRQ_MMC,
	.end = IRQ_MMC,
	.flags = IORESOURCE_IRQ,
	},
	};

	static u64 pxamci_dmamask = 0xffffffffUL;

	static struct platform_device pxamci_device = {
	.name = "pxa2xx-mci",
	.id = -1,
	.dev = {
	.dma_mask = &pxamci_dmamask,
	.coherent_dma_mask = 0xffffffff,
	},
	.num_resources = ARRAY_SIZE(pxamci_resources),
	.resource = pxamci_resources,
	};

	void __init pxa_set_mci_info(struct pxamci_platform_data *info)
	{
	pxamci_device.dev.platform_data = info;
	}


	static struct pxa2xx_udc_mach_info pxa_udc_info;

	void __init pxa_set_udc_info(struct pxa2xx_udc_mach_info *info)
	{
	memcpy(&pxa_udc_info, info, sizeof *info);
	}

	static struct resource pxa2xx_udc_resources[] = {
	[0] = {
	.start = 0x40600000,
	.end = 0x4060ffff,
	.flags = IORESOURCE_MEM,
	},
	[1] = {
	.start = IRQ_USB,
	.end = IRQ_USB,
	.flags = IORESOURCE_IRQ,
	},
	};

	static u64 udc_dma_mask = ~(u32)0;

	static struct platform_device udc_device = {
	.name = "pxa2xx-udc",
	.id = -1,
	.resource = pxa2xx_udc_resources,
	.num_resources = ARRAY_SIZE(pxa2xx_udc_resources),
	.dev = {
	.platform_data = &pxa_udc_info,
	.dma_mask = &udc_dma_mask,
	}
	};

	static struct resource pxafb_resources[] = {
	[0] = {
	.start = 0x44000000,
	.end = 0x4400ffff,
	.flags = IORESOURCE_MEM,
	},
	[1] = {
	.start = IRQ_LCD,
	.end = IRQ_LCD,
	.flags = IORESOURCE_IRQ,
	},
	};

	static u64 fb_dma_mask = ~(u64)0;

	static struct platform_device pxafb_device = {
	.name = "pxa2xx-fb",
	.id = -1,
	.dev = {
	.dma_mask = &fb_dma_mask,
	.coherent_dma_mask = 0xffffffff,
	},
	.num_resources = ARRAY_SIZE(pxafb_resources),
	.resource = pxafb_resources,
	};

	void __init set_pxa_fb_info(struct pxafb_mach_info *info)
	{
	pxafb_device.dev.platform_data = info;
	}

	void __init set_pxa_fb_parent(struct device *parent_dev)
	{
	pxafb_device.dev.parent = parent_dev;
	}

	static struct platform_device ffuart_device = {
	.name = "pxa2xx-uart",
	.id = 0,
	};
	static struct platform_device btuart_device = {
	.name = "pxa2xx-uart",
	.id = 1,
	};
	static struct platform_device stuart_device = {
	.name = "pxa2xx-uart",
	.id = 2,
	};
	static struct platform_device hwuart_device = {
	.name = "pxa2xx-uart",
	.id = 3,
	};

	static struct resource i2c_resources[] = {
	{
	.start = 0x40301680,
	.end = 0x403016a3,
	.flags = IORESOURCE_MEM,
	}, {
	.start = IRQ_I2C,
	.end = IRQ_I2C,
	.flags = IORESOURCE_IRQ,
	},
	};

	static struct platform_device i2c_device = {
	.name = "pxa2xx-i2c",
	.id = 0,
	.resource = i2c_resources,
	.num_resources = ARRAY_SIZE(i2c_resources),
	};

	void __init pxa_set_i2c_info(struct i2c_pxa_platform_data *info)
	{
	i2c_device.dev.platform_data = info;
	}

	static struct resource i2s_resources[] = {
	{
	.start = 0x40400000,
	.end = 0x40400083,
	.flags = IORESOURCE_MEM,
	}, {
	.start = IRQ_I2S,
	.end = IRQ_I2S,
	.flags = IORESOURCE_IRQ,
	},
	};

	static struct platform_device i2s_device = {
	.name = "pxa2xx-i2s",
	.id = -1,
	.resource = i2s_resources,
	.num_resources = ARRAY_SIZE(i2s_resources),
	};

	static u64 pxaficp_dmamask = ~(u32)0;

	static struct platform_device pxaficp_device = {
	.name = "pxa2xx-ir",
	.id = -1,
	.dev = {
	.dma_mask = &pxaficp_dmamask,
	.coherent_dma_mask = 0xffffffff,
	},
	};

	void __init pxa_set_ficp_info(struct pxaficp_platform_data *info)
	{
	pxaficp_device.dev.platform_data = info;
	}

	static struct platform_device pxartc_device = {
	.name = "sa1100-rtc",
	.id = -1,
	};

	static struct platform_device *devices[] __initdata = {
	&pxamci_device,
	&udc_device,
	&pxafb_device,
	&ffuart_device,
	&btuart_device,
	&stuart_device,
	&pxaficp_device,
	&i2c_device,
	&i2s_device,
	&pxartc_device,
	};

	static int __init pxa_init(void)
	{
	int cpuid, ret;

	ret = platform_add_devices(devices, ARRAY_SIZE(devices));
	if (ret)
	return ret;

	/* Only add HWUART for PXA255/26x; PXA210/250/27x do not have it. */
	cpuid = read_cpuid(CPUID_ID);
	if (((cpuid >> 4) & 0xfff) == 0x2d0 \|\|
	((cpuid >> 4) & 0xfff) == 0x290)
	ret = platform_device_register(&hwuart_device);

	return ret;
	}

	subsys_initcall(pxa_init);