[deliverable/linux.git] / arch / arm / mach-pxa / generic.c

/*
 *  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 <mach/hardware.h>
#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/mach/map.h>
#include <asm/mach-types.h>

#include <mach/reset.h>
#include <mach/gpio.h>

#include "generic.h"

void clear_reset_status(unsigned int mask)
{
	if (cpu_is_pxa2xx())
		pxa2xx_clear_reset_status(mask);

	if (cpu_is_pxa3xx())
		pxa3xx_clear_reset_status(mask);
}

unsigned long get_clock_tick_rate(void)
{
	unsigned long clock_tick_rate;

	if (cpu_is_pxa25x())
		clock_tick_rate = 3686400;
	else if (machine_is_mainstone())
		clock_tick_rate = 3249600;
	else
		clock_tick_rate = 3250000;

	return clock_tick_rate;
}
EXPORT_SYMBOL(get_clock_tick_rate);

/*
 * Get the clock frequency as reflected by CCCR and the turbo flag.
 * We assume these values have been applied via a fcs.
 * If info is not 0 we also display the current settings.
 */
unsigned int get_clk_frequency_khz(int info)
{
	if (cpu_is_pxa25x())
		return pxa25x_get_clk_frequency_khz(info);
	else if (cpu_is_pxa27x())
		return pxa27x_get_clk_frequency_khz(info);
	return 0;
}
EXPORT_SYMBOL(get_clk_frequency_khz);

/*
 * Return the current memory clock frequency in units of 10kHz
 */
unsigned int get_memclk_frequency_10khz(void)
{
	if (cpu_is_pxa25x())
		return pxa25x_get_memclk_frequency_10khz();
	else if (cpu_is_pxa27x())
		return pxa27x_get_memclk_frequency_10khz();
	return 0;
}
EXPORT_SYMBOL(get_memclk_frequency_10khz);

/*
 * Intel PXA2xx internal register mapping.
 *
 * Note: virtual 0xfffe0000-0xffffffff is reserved for the vector table
 *       and cache flush area.
 */
static struct map_desc common_io_desc[] __initdata = {
  	{	/* Devs */
		.virtual	=  0xf2000000,
		.pfn		= __phys_to_pfn(0x40000000),
		.length		= 0x02000000,
		.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(ARRAY_AND_SIZE(common_io_desc));
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/arch/arm/mach-pxa/generic.c
	3	*
	4	* Author: Nicolas Pitre
	5	* Created: Jun 15, 2001
	6	* Copyright: MontaVista Software Inc.
	7	*
	8	* Code common to all PXA machines.
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License version 2 as
	12	* published by the Free Software Foundation.
	13	*
	14	* Since this file should be linked before any other machine specific file,
	15	* the __initcall() here will be executed first. This serves as default
	16	* initialization stuff for PXA machines which can be overridden later if
	17	* need be.
	18	*/
	19	#include <linux/module.h>
	20	#include <linux/kernel.h>
	21	#include <linux/init.h>
1da177e4	22
a09e64fb	23	#include <mach/hardware.h>
1da177e4 LT	24	#include <asm/system.h>
	25	#include <asm/pgtable.h>
	26	#include <asm/mach/map.h>
6769717d	27	#include <asm/mach-types.h>
1da177e4	28
afd2fc02	29	#include <mach/reset.h>
da065a0b	30	#include <mach/gpio.h>
1da177e4 LT	31
	32	#include "generic.h"
	33
04fef228 EM	34	void clear_reset_status(unsigned int mask)
	35	{
	36	if (cpu_is_pxa2xx())
	37	pxa2xx_clear_reset_status(mask);
	38
	39	if (cpu_is_pxa3xx())
	40	pxa3xx_clear_reset_status(mask);
	41	}
	42
6769717d EM	43	unsigned long get_clock_tick_rate(void)
	44	{
	45	unsigned long clock_tick_rate;
	46
	47	if (cpu_is_pxa25x())
	48	clock_tick_rate = 3686400;
	49	else if (machine_is_mainstone())
	50	clock_tick_rate = 3249600;
	51	else
	52	clock_tick_rate = 3250000;
	53
	54	return clock_tick_rate;
	55	}
	56	EXPORT_SYMBOL(get_clock_tick_rate);
	57
15a40333 RK	58	/*
	59	* Get the clock frequency as reflected by CCCR and the turbo flag.
	60	* We assume these values have been applied via a fcs.
	61	* If info is not 0 we also display the current settings.
	62	*/
	63	unsigned int get_clk_frequency_khz(int info)
	64	{
0ffcbfd5	65	if (cpu_is_pxa25x())
15a40333	66	return pxa25x_get_clk_frequency_khz(info);
2c8086a5	67	else if (cpu_is_pxa27x())
15a40333	68	return pxa27x_get_clk_frequency_khz(info);
ecf89b8a	69	return 0;
15a40333 RK	70	}
	71	EXPORT_SYMBOL(get_clk_frequency_khz);
	72
	73	/*
	74	* Return the current memory clock frequency in units of 10kHz
	75	*/
	76	unsigned int get_memclk_frequency_10khz(void)
	77	{
0ffcbfd5	78	if (cpu_is_pxa25x())
15a40333	79	return pxa25x_get_memclk_frequency_10khz();
2c8086a5	80	else if (cpu_is_pxa27x())
15a40333	81	return pxa27x_get_memclk_frequency_10khz();
799929d7	82	return 0;
15a40333 RK	83	}
	84	EXPORT_SYMBOL(get_memclk_frequency_10khz);
	85
1da177e4 LT	86	/*
	87	* Intel PXA2xx internal register mapping.
	88	*
851982c1 MV	89	* Note: virtual 0xfffe0000-0xffffffff is reserved for the vector table
851982c1 MV	90	* and cache flush area.
1da177e4	91	*/
851982c1	92	static struct map_desc common_io_desc[] __initdata = {
6f9182eb DS	93	{ /* Devs */
	94	.virtual = 0xf2000000,
	95	.pfn = __phys_to_pfn(0x40000000),
	96	.length = 0x02000000,
	97	.type = MT_DEVICE
6f9182eb DS	98	}, { /* UNCACHED_PHYS_0 */
	99	.virtual = 0xff000000,
	100	.pfn = __phys_to_pfn(0x00000000),
	101	.length = 0x00100000,
	102	.type = MT_DEVICE
	103	}
1da177e4 LT	104	};
	105
	106	void __init pxa_map_io(void)
	107	{
851982c1	108	iotable_init(ARRAY_AND_SIZE(common_io_desc));
1da177e4	109	}