[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / arm / mach-pxa / pxa25x.c

/*
 *  linux/arch/arm/mach-pxa/pxa25x.c
 *
 *  Author:	Nicolas Pitre
 *  Created:	Jun 15, 2001
 *  Copyright:	MontaVista Software Inc.
 *
 * Code specific to PXA21x/25x/26x variants.
 *
 * 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/platform_device.h>
#include <linux/suspend.h>
#include <linux/sysdev.h>

#include <mach/hardware.h>
#include <mach/irqs.h>
#include <mach/pxa-regs.h>
#include <mach/pxa2xx-regs.h>
#include <mach/mfp-pxa25x.h>
#include <mach/pm.h>
#include <mach/dma.h>

#include "generic.h"
#include "devices.h"
#include "clock.h"

/*
 * Various clock factors driven by the CCCR register.
 */

/* Crystal Frequency to Memory Frequency Multiplier (L) */
static unsigned char L_clk_mult[32] = { 0, 27, 32, 36, 40, 45, 0, };

/* Memory Frequency to Run Mode Frequency Multiplier (M) */
static unsigned char M_clk_mult[4] = { 0, 1, 2, 4 };

/* Run Mode Frequency to Turbo Mode Frequency Multiplier (N) */
/* Note: we store the value N * 2 here. */
static unsigned char N2_clk_mult[8] = { 0, 0, 2, 3, 4, 0, 6, 0 };

/* Crystal clock */
#define BASE_CLK	3686400

/*
 * 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 pxa25x_get_clk_frequency_khz(int info)
{
	unsigned long cccr, turbo;
	unsigned int l, L, m, M, n2, N;

	cccr = CCCR;
	asm( "mrc\tp14, 0, %0, c6, c0, 0" : "=r" (turbo) );

	l  =  L_clk_mult[(cccr >> 0) & 0x1f];
	m  =  M_clk_mult[(cccr >> 5) & 0x03];
	n2 = N2_clk_mult[(cccr >> 7) & 0x07];

	L = l * BASE_CLK;
	M = m * L;
	N = n2 * M / 2;

	if(info)
	{
		L += 5000;
		printk( KERN_INFO "Memory clock: %d.%02dMHz (*%d)\n",
			L / 1000000, (L % 1000000) / 10000, l );
		M += 5000;
		printk( KERN_INFO "Run Mode clock: %d.%02dMHz (*%d)\n",
			M / 1000000, (M % 1000000) / 10000, m );
		N += 5000;
		printk( KERN_INFO "Turbo Mode clock: %d.%02dMHz (*%d.%d, %sactive)\n",
			N / 1000000, (N % 1000000) / 10000, n2 / 2, (n2 % 2) * 5,
			(turbo & 1) ? "" : "in" );
	}

	return (turbo & 1) ? (N/1000) : (M/1000);
}

/*
 * Return the current memory clock frequency in units of 10kHz
 */
unsigned int pxa25x_get_memclk_frequency_10khz(void)
{
	return L_clk_mult[(CCCR >> 0) & 0x1f] * BASE_CLK / 10000;
}

static unsigned long clk_pxa25x_lcd_getrate(struct clk *clk)
{
	return pxa25x_get_memclk_frequency_10khz() * 10000;
}

static const struct clkops clk_pxa25x_lcd_ops = {
	.enable		= clk_cken_enable,
	.disable	= clk_cken_disable,
	.getrate	= clk_pxa25x_lcd_getrate,
};

static unsigned long gpio12_config_32k[] = {
	GPIO12_32KHz,
};

static unsigned long gpio12_config_gpio[] = {
	GPIO12_GPIO,
};

static void clk_gpio12_enable(struct clk *clk)
{
	pxa2xx_mfp_config(gpio12_config_32k, 1);
}

static void clk_gpio12_disable(struct clk *clk)
{
	pxa2xx_mfp_config(gpio12_config_gpio, 1);
}

static const struct clkops clk_pxa25x_gpio12_ops = {
	.enable         = clk_gpio12_enable,
	.disable        = clk_gpio12_disable,
};

static unsigned long gpio11_config_3m6[] = {
	GPIO11_3_6MHz,
};

static unsigned long gpio11_config_gpio[] = {
	GPIO11_GPIO,
};

static void clk_gpio11_enable(struct clk *clk)
{
	pxa2xx_mfp_config(gpio11_config_3m6, 1);
}

static void clk_gpio11_disable(struct clk *clk)
{
	pxa2xx_mfp_config(gpio11_config_gpio, 1);
}

static const struct clkops clk_pxa25x_gpio11_ops = {
	.enable         = clk_gpio11_enable,
	.disable        = clk_gpio11_disable,
};

/*
 * 3.6864MHz -> OST, GPIO, SSP, PWM, PLLs (95.842MHz, 147.456MHz)
 * 95.842MHz -> MMC 19.169MHz, I2C 31.949MHz, FICP 47.923MHz, USB 47.923MHz
 * 147.456MHz -> UART 14.7456MHz, AC97 12.288MHz, I2S 5.672MHz (allegedly)
 */
static struct clk pxa25x_hwuart_clk =
	INIT_CKEN("UARTCLK", HWUART, 14745600, 1, &pxa_device_hwuart.dev)
;

/*
 * PXA 2xx clock declarations. Order is important (see aliases below)
 * Please be careful not to disrupt the ordering.
 */
static struct clk pxa25x_clks[] = {
	INIT_CK("LCDCLK", LCD, &clk_pxa25x_lcd_ops, &pxa_device_fb.dev),
	INIT_CKEN("UARTCLK", FFUART, 14745600, 1, &pxa_device_ffuart.dev),
	INIT_CKEN("UARTCLK", BTUART, 14745600, 1, &pxa_device_btuart.dev),
	INIT_CKEN("UARTCLK", STUART, 14745600, 1, NULL),
	INIT_CKEN("UDCCLK", USB, 47923000, 5, &pxa25x_device_udc.dev),
	INIT_CLK("GPIO11_CLK", &clk_pxa25x_gpio11_ops, 3686400, 0, NULL),
	INIT_CLK("GPIO12_CLK", &clk_pxa25x_gpio12_ops, 32768, 0, NULL),
	INIT_CKEN("MMCCLK", MMC, 19169000, 0, &pxa_device_mci.dev),
	INIT_CKEN("I2CCLK", I2C, 31949000, 0, &pxa_device_i2c.dev),

	INIT_CKEN("SSPCLK",  SSP, 3686400, 0, &pxa25x_device_ssp.dev),
	INIT_CKEN("SSPCLK", NSSP, 3686400, 0, &pxa25x_device_nssp.dev),
	INIT_CKEN("SSPCLK", ASSP, 3686400, 0, &pxa25x_device_assp.dev),
	INIT_CKEN("PWMCLK", PWM0, 3686400, 0, &pxa25x_device_pwm0.dev),
	INIT_CKEN("PWMCLK", PWM1, 3686400, 0, &pxa25x_device_pwm1.dev),

	INIT_CKEN("AC97CLK",     AC97,     24576000, 0, NULL),

	/*
	INIT_CKEN("I2SCLK",  I2S,  14745600, 0, NULL),
	*/
	INIT_CKEN("FICPCLK", FICP, 47923000, 0, NULL),
};

static struct clk pxa2xx_clk_aliases[] = {
	INIT_CKOTHER("GPIO7_CLK", &pxa25x_clks[4], NULL),
	INIT_CKOTHER("SA1111_CLK", &pxa25x_clks[5], NULL),
};

#ifdef CONFIG_PM

#define SAVE(x)		sleep_save[SLEEP_SAVE_##x] = x
#define RESTORE(x)	x = sleep_save[SLEEP_SAVE_##x]

/*
 * List of global PXA peripheral registers to preserve.
 * More ones like CP and general purpose register values are preserved
 * with the stack pointer in sleep.S.
 */
enum {	SLEEP_SAVE_PGSR0, SLEEP_SAVE_PGSR1, SLEEP_SAVE_PGSR2,

	SLEEP_SAVE_GAFR0_L, SLEEP_SAVE_GAFR0_U,
	SLEEP_SAVE_GAFR1_L, SLEEP_SAVE_GAFR1_U,
	SLEEP_SAVE_GAFR2_L, SLEEP_SAVE_GAFR2_U,

	SLEEP_SAVE_PSTR,

	SLEEP_SAVE_CKEN,

	SLEEP_SAVE_COUNT
};


static void pxa25x_cpu_pm_save(unsigned long *sleep_save)
{
	SAVE(PGSR0); SAVE(PGSR1); SAVE(PGSR2);

	SAVE(GAFR0_L); SAVE(GAFR0_U);
	SAVE(GAFR1_L); SAVE(GAFR1_U);
	SAVE(GAFR2_L); SAVE(GAFR2_U);

	SAVE(CKEN);
	SAVE(PSTR);

	/* Clear GPIO transition detect bits */
	GEDR0 = GEDR0; GEDR1 = GEDR1; GEDR2 = GEDR2;
}

static void pxa25x_cpu_pm_restore(unsigned long *sleep_save)
{
	/* ensure not to come back here if it wasn't intended */
	PSPR = 0;

	/* restore registers */
	RESTORE(GAFR0_L); RESTORE(GAFR0_U);
	RESTORE(GAFR1_L); RESTORE(GAFR1_U);
	RESTORE(GAFR2_L); RESTORE(GAFR2_U);
	RESTORE(PGSR0); RESTORE(PGSR1); RESTORE(PGSR2);

	PSSR = PSSR_RDH | PSSR_PH;

	RESTORE(CKEN);
	RESTORE(PSTR);
}

static void pxa25x_cpu_pm_enter(suspend_state_t state)
{
	/* Clear reset status */
	RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;

	switch (state) {
	case PM_SUSPEND_MEM:
		/* set resume return address */
		PSPR = virt_to_phys(pxa_cpu_resume);
		pxa25x_cpu_suspend(PWRMODE_SLEEP);
		break;
	}
}

static struct pxa_cpu_pm_fns pxa25x_cpu_pm_fns = {
	.save_count	= SLEEP_SAVE_COUNT,
	.valid		= suspend_valid_only_mem,
	.save		= pxa25x_cpu_pm_save,
	.restore	= pxa25x_cpu_pm_restore,
	.enter		= pxa25x_cpu_pm_enter,
};

static void __init pxa25x_init_pm(void)
{
	pxa_cpu_pm_fns = &pxa25x_cpu_pm_fns;
}
#else
static inline void pxa25x_init_pm(void) {}
#endif

/* PXA25x: supports wakeup from GPIO0..GPIO15 and RTC alarm
 */

static int pxa25x_set_wake(unsigned int irq, unsigned int on)
{
	int gpio = IRQ_TO_GPIO(irq);
	uint32_t mask = 0;

	if (gpio >= 0 && gpio < 85)
		return gpio_set_wake(gpio, on);

	if (irq == IRQ_RTCAlrm) {
		mask = PWER_RTC;
		goto set_pwer;
	}

	return -EINVAL;

set_pwer:
	if (on)
		PWER |= mask;
	else
		PWER &=~mask;

	return 0;
}

void __init pxa25x_init_irq(void)
{
	pxa_init_irq(32, pxa25x_set_wake);
	pxa_init_gpio(85, pxa25x_set_wake);
}

static struct platform_device *pxa25x_devices[] __initdata = {
	&pxa25x_device_udc,
	&pxa_device_ffuart,
	&pxa_device_btuart,
	&pxa_device_stuart,
	&pxa_device_i2s,
	&pxa_device_rtc,
	&pxa25x_device_ssp,
	&pxa25x_device_nssp,
	&pxa25x_device_assp,
	&pxa25x_device_pwm0,
	&pxa25x_device_pwm1,
};

static struct sys_device pxa25x_sysdev[] = {
	{
		.cls	= &pxa_irq_sysclass,
	}, {
		.cls	= &pxa_gpio_sysclass,
	},
};

static int __init pxa25x_init(void)
{
	int i, ret = 0;

	/* Only add HWUART for PXA255/26x; PXA210/250/27x do not have it. */
	if (cpu_is_pxa255())
		clks_register(&pxa25x_hwuart_clk, 1);

	if (cpu_is_pxa21x() || cpu_is_pxa25x()) {
		clks_register(pxa25x_clks, ARRAY_SIZE(pxa25x_clks));

		if ((ret = pxa_init_dma(16)))
			return ret;

		pxa25x_init_pm();

		for (i = 0; i < ARRAY_SIZE(pxa25x_sysdev); i++) {
			ret = sysdev_register(&pxa25x_sysdev[i]);
			if (ret)
				pr_err("failed to register sysdev[%d]\n", i);
		}

		ret = platform_add_devices(pxa25x_devices,
					   ARRAY_SIZE(pxa25x_devices));
		if (ret)
			return ret;
	}

	/* Only add HWUART for PXA255/26x; PXA210/250/27x do not have it. */
	if (cpu_is_pxa255())
		ret = platform_device_register(&pxa_device_hwuart);

	clks_register(pxa2xx_clk_aliases, ARRAY_SIZE(pxa2xx_clk_aliases));

	return ret;
}

postcore_initcall(pxa25x_init);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/arch/arm/mach-pxa/pxa25x.c
	3	*
	4	* Author: Nicolas Pitre
	5	* Created: Jun 15, 2001
	6	* Copyright: MontaVista Software Inc.
	7	*
	8	* Code specific to PXA21x/25x/26x variants.
	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>
34f3231f	22	#include <linux/platform_device.h>
95d9ffbe	23	#include <linux/suspend.h>
c0165504	24	#include <linux/sysdev.h>
1da177e4	25
a09e64fb RK	26	#include <mach/hardware.h>
	27	#include <mach/irqs.h>
	28	#include <mach/pxa-regs.h>
	29	#include <mach/pxa2xx-regs.h>
	30	#include <mach/mfp-pxa25x.h>
	31	#include <mach/pm.h>
	32	#include <mach/dma.h>
1da177e4 LT	33
1da177e4 LT	34	#include "generic.h"
46c41e62	35	#include "devices.h"
a6dba20c	36	#include "clock.h"
1da177e4 LT	37
	38	/*
	39	* Various clock factors driven by the CCCR register.
	40	*/
	41
	42	/* Crystal Frequency to Memory Frequency Multiplier (L) */
	43	static unsigned char L_clk_mult[32] = { 0, 27, 32, 36, 40, 45, 0, };
	44
	45	/* Memory Frequency to Run Mode Frequency Multiplier (M) */
	46	static unsigned char M_clk_mult[4] = { 0, 1, 2, 4 };
	47
	48	/* Run Mode Frequency to Turbo Mode Frequency Multiplier (N) */
	49	/* Note: we store the value N * 2 here. */
	50	static unsigned char N2_clk_mult[8] = { 0, 0, 2, 3, 4, 0, 6, 0 };
	51
	52	/* Crystal clock */
	53	#define BASE_CLK 3686400
	54
	55	/*
	56	* Get the clock frequency as reflected by CCCR and the turbo flag.
	57	* We assume these values have been applied via a fcs.
	58	* If info is not 0 we also display the current settings.
	59	*/
15a40333	60	unsigned int pxa25x_get_clk_frequency_khz(int info)
1da177e4 LT	61	{
	62	unsigned long cccr, turbo;
	63	unsigned int l, L, m, M, n2, N;
	64
	65	cccr = CCCR;
	66	asm( "mrc\tp14, 0, %0, c6, c0, 0" : "=r" (turbo) );
	67
	68	l = L_clk_mult[(cccr >> 0) & 0x1f];
	69	m = M_clk_mult[(cccr >> 5) & 0x03];
	70	n2 = N2_clk_mult[(cccr >> 7) & 0x07];
	71
	72	L = l * BASE_CLK;
	73	M = m * L;
	74	N = n2 * M / 2;
	75
	76	if(info)
	77	{
	78	L += 5000;
	79	printk( KERN_INFO "Memory clock: %d.%02dMHz (*%d)\n",
	80	L / 1000000, (L % 1000000) / 10000, l );
	81	M += 5000;
	82	printk( KERN_INFO "Run Mode clock: %d.%02dMHz (*%d)\n",
	83	M / 1000000, (M % 1000000) / 10000, m );
	84	N += 5000;
	85	printk( KERN_INFO "Turbo Mode clock: %d.%02dMHz (*%d.%d, %sactive)\n",
	86	N / 1000000, (N % 1000000) / 10000, n2 / 2, (n2 % 2) * 5,
	87	(turbo & 1) ? "" : "in" );
	88	}
	89
	90	return (turbo & 1) ? (N/1000) : (M/1000);
	91	}
	92
1da177e4 LT	93	/*
	94	* Return the current memory clock frequency in units of 10kHz
	95	*/
15a40333	96	unsigned int pxa25x_get_memclk_frequency_10khz(void)
1da177e4 LT	97	{
	98	return L_clk_mult[(CCCR >> 0) & 0x1f] * BASE_CLK / 10000;
	99	}
	100
a6dba20c RK	101	static unsigned long clk_pxa25x_lcd_getrate(struct clk *clk)
	102	{
	103	return pxa25x_get_memclk_frequency_10khz() * 10000;
	104	}
	105
	106	static const struct clkops clk_pxa25x_lcd_ops = {
	107	.enable = clk_cken_enable,
	108	.disable = clk_cken_disable,
	109	.getrate = clk_pxa25x_lcd_getrate,
	110	};
	111
ed847782 IM	112	static unsigned long gpio12_config_32k[] = {
	113	GPIO12_32KHz,
	114	};
	115
	116	static unsigned long gpio12_config_gpio[] = {
	117	GPIO12_GPIO,
	118	};
	119
	120	static void clk_gpio12_enable(struct clk *clk)
	121	{
	122	pxa2xx_mfp_config(gpio12_config_32k, 1);
	123	}
	124
	125	static void clk_gpio12_disable(struct clk *clk)
	126	{
	127	pxa2xx_mfp_config(gpio12_config_gpio, 1);
	128	}
	129
	130	static const struct clkops clk_pxa25x_gpio12_ops = {
	131	.enable = clk_gpio12_enable,
	132	.disable = clk_gpio12_disable,
	133	};
	134
13f75582 IM	135	static unsigned long gpio11_config_3m6[] = {
	136	GPIO11_3_6MHz,
	137	};
	138
	139	static unsigned long gpio11_config_gpio[] = {
	140	GPIO11_GPIO,
	141	};
	142
	143	static void clk_gpio11_enable(struct clk *clk)
	144	{
	145	pxa2xx_mfp_config(gpio11_config_3m6, 1);
	146	}
	147
	148	static void clk_gpio11_disable(struct clk *clk)
	149	{
	150	pxa2xx_mfp_config(gpio11_config_gpio, 1);
	151	}
	152
	153	static const struct clkops clk_pxa25x_gpio11_ops = {
	154	.enable = clk_gpio11_enable,
	155	.disable = clk_gpio11_disable,
	156	};
	157
a6dba20c RK	158	/*
	159	* 3.6864MHz -> OST, GPIO, SSP, PWM, PLLs (95.842MHz, 147.456MHz)
	160	* 95.842MHz -> MMC 19.169MHz, I2C 31.949MHz, FICP 47.923MHz, USB 47.923MHz
	161	* 147.456MHz -> UART 14.7456MHz, AC97 12.288MHz, I2S 5.672MHz (allegedly)
	162	*/
e01dbdb4 DES	163	static struct clk pxa25x_hwuart_clk =
	164	INIT_CKEN("UARTCLK", HWUART, 14745600, 1, &pxa_device_hwuart.dev)
	165	;
	166
bdb08cb2 RK	167	/*
	168	* PXA 2xx clock declarations. Order is important (see aliases below)
	169	* Please be careful not to disrupt the ordering.
	170	*/
a6dba20c RK	171	static struct clk pxa25x_clks[] = {
	172	INIT_CK("LCDCLK", LCD, &clk_pxa25x_lcd_ops, &pxa_device_fb.dev),
	173	INIT_CKEN("UARTCLK", FFUART, 14745600, 1, &pxa_device_ffuart.dev),
	174	INIT_CKEN("UARTCLK", BTUART, 14745600, 1, &pxa_device_btuart.dev),
435b6e94	175	INIT_CKEN("UARTCLK", STUART, 14745600, 1, NULL),
7a857620	176	INIT_CKEN("UDCCLK", USB, 47923000, 5, &pxa25x_device_udc.dev),
13f75582	177	INIT_CLK("GPIO11_CLK", &clk_pxa25x_gpio11_ops, 3686400, 0, NULL),
ed847782	178	INIT_CLK("GPIO12_CLK", &clk_pxa25x_gpio12_ops, 32768, 0, NULL),
a6dba20c RK	179	INIT_CKEN("MMCCLK", MMC, 19169000, 0, &pxa_device_mci.dev),
a6dba20c RK	180	INIT_CKEN("I2CCLK", I2C, 31949000, 0, &pxa_device_i2c.dev),
d8e0db11	181
	182	INIT_CKEN("SSPCLK", SSP, 3686400, 0, &pxa25x_device_ssp.dev),
	183	INIT_CKEN("SSPCLK", NSSP, 3686400, 0, &pxa25x_device_nssp.dev),
	184	INIT_CKEN("SSPCLK", ASSP, 3686400, 0, &pxa25x_device_assp.dev),
75540c1a	185	INIT_CKEN("PWMCLK", PWM0, 3686400, 0, &pxa25x_device_pwm0.dev),
75540c1a	186	INIT_CKEN("PWMCLK", PWM1, 3686400, 0, &pxa25x_device_pwm1.dev),
d8e0db11	187
27b98a67 MB	188	INIT_CKEN("AC97CLK", AC97, 24576000, 0, NULL),
27b98a67 MB	189
a6dba20c	190	/*
a6dba20c	191	INIT_CKEN("I2SCLK", I2S, 14745600, 0, NULL),
a6dba20c	192	*/
435b6e94	193	INIT_CKEN("FICPCLK", FICP, 47923000, 0, NULL),
a6dba20c RK	194	};
a6dba20c RK	195
13f75582 IM	196	static struct clk pxa2xx_clk_aliases[] = {
	197	INIT_CKOTHER("GPIO7_CLK", &pxa25x_clks[4], NULL),
	198	INIT_CKOTHER("SA1111_CLK", &pxa25x_clks[5], NULL),
	199	};
bdb08cb2	200
a8fa3f0c	201	#ifdef CONFIG_PM
8775420d	202
711be5cc EM	203	#define SAVE(x) sleep_save[SLEEP_SAVE_##x] = x
	204	#define RESTORE(x) x = sleep_save[SLEEP_SAVE_##x]
	205
711be5cc EM	206	/*
	207	* List of global PXA peripheral registers to preserve.
	208	* More ones like CP and general purpose register values are preserved
	209	* with the stack pointer in sleep.S.
	210	*/
649de51b	211	enum { SLEEP_SAVE_PGSR0, SLEEP_SAVE_PGSR1, SLEEP_SAVE_PGSR2,
711be5cc EM	212
	213	SLEEP_SAVE_GAFR0_L, SLEEP_SAVE_GAFR0_U,
	214	SLEEP_SAVE_GAFR1_L, SLEEP_SAVE_GAFR1_U,
	215	SLEEP_SAVE_GAFR2_L, SLEEP_SAVE_GAFR2_U,
	216
	217	SLEEP_SAVE_PSTR,
	218
711be5cc EM	219	SLEEP_SAVE_CKEN,
711be5cc EM	220
649de51b	221	SLEEP_SAVE_COUNT
711be5cc EM	222	};
	223
	224
	225	static void pxa25x_cpu_pm_save(unsigned long *sleep_save)
	226	{
711be5cc EM	227	SAVE(PGSR0); SAVE(PGSR1); SAVE(PGSR2);
	228
	229	SAVE(GAFR0_L); SAVE(GAFR0_U);
	230	SAVE(GAFR1_L); SAVE(GAFR1_U);
	231	SAVE(GAFR2_L); SAVE(GAFR2_U);
	232
711be5cc EM	233	SAVE(CKEN);
711be5cc EM	234	SAVE(PSTR);
56b11288 RP	235
	236	/* Clear GPIO transition detect bits */
	237	GEDR0 = GEDR0; GEDR1 = GEDR1; GEDR2 = GEDR2;
711be5cc EM	238	}
	239
	240	static void pxa25x_cpu_pm_restore(unsigned long *sleep_save)
	241	{
56b11288 RP	242	/* ensure not to come back here if it wasn't intended */
	243	PSPR = 0;
	244
711be5cc	245	/* restore registers */
711be5cc EM	246	RESTORE(GAFR0_L); RESTORE(GAFR0_U);
	247	RESTORE(GAFR1_L); RESTORE(GAFR1_U);
	248	RESTORE(GAFR2_L); RESTORE(GAFR2_U);
711be5cc EM	249	RESTORE(PGSR0); RESTORE(PGSR1); RESTORE(PGSR2);
711be5cc EM	250
56b11288 RP	251	PSSR = PSSR_RDH \| PSSR_PH;
56b11288 RP	252
711be5cc	253	RESTORE(CKEN);
711be5cc EM	254	RESTORE(PSTR);
	255	}
	256
	257	static void pxa25x_cpu_pm_enter(suspend_state_t state)
8775420d	258	{
dc38e2ad RK	259	/* Clear reset status */
	260	RCSR = RCSR_HWR \| RCSR_WDR \| RCSR_SMR \| RCSR_GPR;
	261
8775420d TP	262	switch (state) {
	263	case PM_SUSPEND_MEM:
	264	/* set resume return address */
	265	PSPR = virt_to_phys(pxa_cpu_resume);
b750a093	266	pxa25x_cpu_suspend(PWRMODE_SLEEP);
8775420d TP	267	break;
	268	}
	269	}
a8fa3f0c	270
711be5cc	271	static struct pxa_cpu_pm_fns pxa25x_cpu_pm_fns = {
649de51b	272	.save_count = SLEEP_SAVE_COUNT,
26398a70	273	.valid = suspend_valid_only_mem,
711be5cc EM	274	.save = pxa25x_cpu_pm_save,
	275	.restore = pxa25x_cpu_pm_restore,
	276	.enter = pxa25x_cpu_pm_enter,
e176bb05	277	};
711be5cc EM	278
	279	static void __init pxa25x_init_pm(void)
	280	{
	281	pxa_cpu_pm_fns = &pxa25x_cpu_pm_fns;
	282	}
f79299ca	283	#else
f79299ca	284	static inline void pxa25x_init_pm(void) {}
a8fa3f0c	285	#endif
e176bb05	286
c95530c7	287	/* PXA25x: supports wakeup from GPIO0..GPIO15 and RTC alarm
	288	*/
	289
	290	static int pxa25x_set_wake(unsigned int irq, unsigned int on)
	291	{
	292	int gpio = IRQ_TO_GPIO(irq);
c0a596d6	293	uint32_t mask = 0;
	294
	295	if (gpio >= 0 && gpio < 85)
	296	return gpio_set_wake(gpio, on);
c95530c7	297
	298	if (irq == IRQ_RTCAlrm) {
	299	mask = PWER_RTC;
	300	goto set_pwer;
	301	}
	302
	303	return -EINVAL;
	304
	305	set_pwer:
	306	if (on)
	307	PWER \|= mask;
	308	else
	309	PWER &=~mask;
	310
	311	return 0;
	312	}
	313
cd49104d EM	314	void __init pxa25x_init_irq(void)
cd49104d EM	315	{
b9e25ace	316	pxa_init_irq(32, pxa25x_set_wake);
b9e25ace	317	pxa_init_gpio(85, pxa25x_set_wake);
cd49104d EM	318	}
cd49104d EM	319
34f3231f	320	static struct platform_device *pxa25x_devices[] __initdata = {
7a857620	321	&pxa25x_device_udc,
e09d02e1 EM	322	&pxa_device_ffuart,
	323	&pxa_device_btuart,
	324	&pxa_device_stuart,
e09d02e1	325	&pxa_device_i2s,
e09d02e1	326	&pxa_device_rtc,
d8e0db11	327	&pxa25x_device_ssp,
	328	&pxa25x_device_nssp,
	329	&pxa25x_device_assp,
75540c1a	330	&pxa25x_device_pwm0,
75540c1a	331	&pxa25x_device_pwm1,
34f3231f RK	332	};
34f3231f RK	333
c0165504	334	static struct sys_device pxa25x_sysdev[] = {
	335	{
	336	.cls = &pxa_irq_sysclass,
16dfdbf0	337	}, {
16dfdbf0	338	.cls = &pxa_gpio_sysclass,
c0165504	339	},
	340	};
	341
e176bb05 RK	342	static int __init pxa25x_init(void)
e176bb05 RK	343	{
c0165504	344	int i, ret = 0;
f53f066c	345
e01dbdb4	346	/* Only add HWUART for PXA255/26x; PXA210/250/27x do not have it. */
aa9ae8eb	347	if (cpu_is_pxa255())
e01dbdb4 DES	348	clks_register(&pxa25x_hwuart_clk, 1);
e01dbdb4 DES	349
e176bb05	350	if (cpu_is_pxa21x() \|\| cpu_is_pxa25x()) {
a6dba20c RK	351	clks_register(pxa25x_clks, ARRAY_SIZE(pxa25x_clks));
a6dba20c RK	352
f53f066c EM	353	if ((ret = pxa_init_dma(16)))
f53f066c EM	354	return ret;
f79299ca	355
711be5cc	356	pxa25x_init_pm();
f79299ca	357
c0165504	358	for (i = 0; i < ARRAY_SIZE(pxa25x_sysdev); i++) {
	359	ret = sysdev_register(&pxa25x_sysdev[i]);
	360	if (ret)
	361	pr_err("failed to register sysdev[%d]\n", i);
	362	}
	363
34f3231f RK	364	ret = platform_add_devices(pxa25x_devices,
34f3231f RK	365	ARRAY_SIZE(pxa25x_devices));
c0165504	366	if (ret)
c0165504	367	return ret;
e176bb05	368	}
c0165504	369
34f3231f	370	/* Only add HWUART for PXA255/26x; PXA210/250/27x do not have it. */
aa9ae8eb	371	if (cpu_is_pxa255())
e09d02e1	372	ret = platform_device_register(&pxa_device_hwuart);
34f3231f	373
13f75582	374	clks_register(pxa2xx_clk_aliases, ARRAY_SIZE(pxa2xx_clk_aliases));
bdb08cb2	375
34f3231f	376	return ret;
e176bb05 RK	377	}
e176bb05 RK	378
1c104e0e	379	postcore_initcall(pxa25x_init);