[deliverable/linux.git] / arch / arm / mach-pxa / pxa27x.c

/*
 *  linux/arch/arm/mach-pxa/pxa27x.c
 *
 *  Author:	Nicolas Pitre
 *  Created:	Nov 05, 2002
 *  Copyright:	MontaVista Software Inc.
 *
 * Code specific to PXA27x aka Bulverde.
 *
 * 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/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/suspend.h>
#include <linux/platform_device.h>
#include <linux/sysdev.h>

#include <asm/hardware.h>
#include <asm/irq.h>
#include <asm/arch/irqs.h>
#include <asm/arch/pxa-regs.h>
#include <asm/arch/pxa2xx-regs.h>
#include <asm/arch/mfp-pxa27x.h>
#include <asm/arch/ohci.h>
#include <asm/arch/pm.h>
#include <asm/arch/dma.h>
#include <asm/arch/i2c.h>

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

/* Crystal clock: 13MHz */
#define BASE_CLK	13000000

/*
 * Get the clock frequency as reflected by CCSR 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 pxa27x_get_clk_frequency_khz(int info)
{
	unsigned long ccsr, clkcfg;
	unsigned int l, L, m, M, n2, N, S;
       	int cccr_a, t, ht, b;

	ccsr = CCSR;
	cccr_a = CCCR & (1 << 25);

	/* Read clkcfg register: it has turbo, b, half-turbo (and f) */
	asm( "mrc\tp14, 0, %0, c6, c0, 0" : "=r" (clkcfg) );
	t  = clkcfg & (1 << 0);
	ht = clkcfg & (1 << 2);
	b  = clkcfg & (1 << 3);

	l  = ccsr & 0x1f;
	n2 = (ccsr>>7) & 0xf;
	m  = (l <= 10) ? 1 : (l <= 20) ? 2 : 4;

	L  = l * BASE_CLK;
	N  = (L * n2) / 2;
	M  = (!cccr_a) ? (L/m) : ((b) ? L : (L/2));
	S  = (b) ? L : (L/2);

	if (info) {
		printk( KERN_INFO "Run Mode clock: %d.%02dMHz (*%d)\n",
			L / 1000000, (L % 1000000) / 10000, l );
		printk( KERN_INFO "Turbo Mode clock: %d.%02dMHz (*%d.%d, %sactive)\n",
			N / 1000000, (N % 1000000)/10000, n2 / 2, (n2 % 2)*5,
			(t) ? "" : "in" );
		printk( KERN_INFO "Memory clock: %d.%02dMHz (/%d)\n",
			M / 1000000, (M % 1000000) / 10000, m );
		printk( KERN_INFO "System bus clock: %d.%02dMHz \n",
			S / 1000000, (S % 1000000) / 10000 );
	}

	return (t) ? (N/1000) : (L/1000);
}

/*
 * Return the current mem clock frequency in units of 10kHz as
 * reflected by CCCR[A], B, and L
 */
unsigned int pxa27x_get_memclk_frequency_10khz(void)
{
	unsigned long ccsr, clkcfg;
	unsigned int l, L, m, M;
       	int cccr_a, b;

	ccsr = CCSR;
	cccr_a = CCCR & (1 << 25);

	/* Read clkcfg register: it has turbo, b, half-turbo (and f) */
	asm( "mrc\tp14, 0, %0, c6, c0, 0" : "=r" (clkcfg) );
	b = clkcfg & (1 << 3);

	l = ccsr & 0x1f;
	m = (l <= 10) ? 1 : (l <= 20) ? 2 : 4;

	L = l * BASE_CLK;
	M = (!cccr_a) ? (L/m) : ((b) ? L : (L/2));

	return (M / 10000);
}

/*
 * Return the current LCD clock frequency in units of 10kHz as
 */
static unsigned int pxa27x_get_lcdclk_frequency_10khz(void)
{
	unsigned long ccsr;
	unsigned int l, L, k, K;

	ccsr = CCSR;

	l = ccsr & 0x1f;
	k = (l <= 7) ? 1 : (l <= 16) ? 2 : 4;

	L = l * BASE_CLK;
	K = L / k;

	return (K / 10000);
}

static unsigned long clk_pxa27x_lcd_getrate(struct clk *clk)
{
	return pxa27x_get_lcdclk_frequency_10khz() * 10000;
}

static const struct clkops clk_pxa27x_lcd_ops = {
	.enable		= clk_cken_enable,
	.disable	= clk_cken_disable,
	.getrate	= clk_pxa27x_lcd_getrate,
};

static struct clk pxa27x_clks[] = {
	INIT_CK("LCDCLK", LCD,    &clk_pxa27x_lcd_ops, &pxa_device_fb.dev),
	INIT_CK("CAMCLK", CAMERA, &clk_pxa27x_lcd_ops, NULL),

	INIT_CKEN("UARTCLK", FFUART, 14857000, 1, &pxa_device_ffuart.dev),
	INIT_CKEN("UARTCLK", BTUART, 14857000, 1, &pxa_device_btuart.dev),
	INIT_CKEN("UARTCLK", STUART, 14857000, 1, NULL),

	INIT_CKEN("I2SCLK",  I2S,  14682000, 0, &pxa_device_i2s.dev),
	INIT_CKEN("I2CCLK",  I2C,  32842000, 0, &pxa_device_i2c.dev),
	INIT_CKEN("UDCCLK",  USB,  48000000, 5, &pxa_device_udc.dev),
	INIT_CKEN("MMCCLK",  MMC,  19500000, 0, &pxa_device_mci.dev),
	INIT_CKEN("FICPCLK", FICP, 48000000, 0, &pxa_device_ficp.dev),

	INIT_CKEN("USBCLK", USBHOST, 48000000, 0, &pxa27x_device_ohci.dev),
	INIT_CKEN("I2CCLK", PWRI2C, 13000000, 0, &pxa27x_device_i2c_power.dev),
	INIT_CKEN("KBDCLK", KEYPAD, 32768, 0, &pxa27x_device_keypad.dev),

	INIT_CKEN("SSPCLK", SSP1, 13000000, 0, &pxa27x_device_ssp1.dev),
	INIT_CKEN("SSPCLK", SSP2, 13000000, 0, &pxa27x_device_ssp2.dev),
	INIT_CKEN("SSPCLK", SSP3, 13000000, 0, &pxa27x_device_ssp3.dev),

	INIT_CKEN("AC97CLK",     AC97,     24576000, 0, NULL),
	INIT_CKEN("AC97CONFCLK", AC97CONF, 24576000, 0, NULL),

	/*
	INIT_CKEN("PWMCLK",  PWM0, 13000000, 0, NULL),
	INIT_CKEN("MSLCLK",  MSL,  48000000, 0, NULL),
	INIT_CKEN("USIMCLK", USIM, 48000000, 0, NULL),
	INIT_CKEN("MSTKCLK", MEMSTK, 19500000, 0, NULL),
	INIT_CKEN("IMCLK",   IM,   0, 0, NULL),
	INIT_CKEN("MEMCLK",  MEMC, 0, 0, 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_PGSR3,

	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_GAFR3_L, SLEEP_SAVE_GAFR3_U,

	SLEEP_SAVE_PSTR,

	SLEEP_SAVE_CKEN,

	SLEEP_SAVE_MDREFR,
	SLEEP_SAVE_PWER, SLEEP_SAVE_PCFR, SLEEP_SAVE_PRER,
	SLEEP_SAVE_PFER, SLEEP_SAVE_PKWR,

	SLEEP_SAVE_COUNT
};

void pxa27x_cpu_pm_save(unsigned long *sleep_save)
{
	SAVE(PGSR0); SAVE(PGSR1); SAVE(PGSR2); SAVE(PGSR3);

	SAVE(GAFR0_L); SAVE(GAFR0_U);
	SAVE(GAFR1_L); SAVE(GAFR1_U);
	SAVE(GAFR2_L); SAVE(GAFR2_U);
	SAVE(GAFR3_L); SAVE(GAFR3_U);

	SAVE(MDREFR);
	SAVE(PWER); SAVE(PCFR); SAVE(PRER);
	SAVE(PFER); SAVE(PKWR);

	SAVE(CKEN);
	SAVE(PSTR);
}

void pxa27x_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(GAFR3_L); RESTORE(GAFR3_U);
	RESTORE(PGSR0); RESTORE(PGSR1); RESTORE(PGSR2); RESTORE(PGSR3);

	RESTORE(MDREFR);
	RESTORE(PWER); RESTORE(PCFR); RESTORE(PRER);
	RESTORE(PFER); RESTORE(PKWR);

	PSSR = PSSR_RDH | PSSR_PH;

	RESTORE(CKEN);

	RESTORE(PSTR);
}

void pxa27x_cpu_pm_enter(suspend_state_t state)
{
	extern void pxa_cpu_standby(void);

	/* ensure voltage-change sequencer not initiated, which hangs */
	PCFR &= ~PCFR_FVC;

	/* Clear edge-detect status register. */
	PEDR = 0xDF12FE1B;

	/* Clear reset status */
	RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;

	switch (state) {
	case PM_SUSPEND_STANDBY:
		pxa_cpu_standby();
		break;
	case PM_SUSPEND_MEM:
		/* set resume return address */
		PSPR = virt_to_phys(pxa_cpu_resume);
		pxa27x_cpu_suspend(PWRMODE_SLEEP);
		break;
	}
}

static int pxa27x_cpu_pm_valid(suspend_state_t state)
{
	return state == PM_SUSPEND_MEM || state == PM_SUSPEND_STANDBY;
}

static struct pxa_cpu_pm_fns pxa27x_cpu_pm_fns = {
	.save_count	= SLEEP_SAVE_COUNT,
	.save		= pxa27x_cpu_pm_save,
	.restore	= pxa27x_cpu_pm_restore,
	.valid		= pxa27x_cpu_pm_valid,
	.enter		= pxa27x_cpu_pm_enter,
};

static void __init pxa27x_init_pm(void)
{
	pxa_cpu_pm_fns = &pxa27x_cpu_pm_fns;
}
#else
static inline void pxa27x_init_pm(void) {}
#endif

/* PXA27x:  Various gpios can issue wakeup events.  This logic only
 * handles the simple cases, not the WEMUX2 and WEMUX3 options
 */
static int pxa27x_set_wake(unsigned int irq, unsigned int on)
{
	int gpio = IRQ_TO_GPIO(irq);
	uint32_t mask;

	if (gpio >= 0 && gpio < 128)
		return gpio_set_wake(gpio, on);

	if (irq == IRQ_KEYPAD)
		return keypad_set_wake(on);

	switch (irq) {
	case IRQ_RTCAlrm:
		mask = PWER_RTC;
		break;
	case IRQ_USB:
		mask = 1u << 26;
		break;
	default:
		return -EINVAL;
	}

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

	return 0;
}

void __init pxa27x_init_irq(void)
{
	pxa_init_irq(34, pxa27x_set_wake);
	pxa_init_gpio(128, pxa27x_set_wake);
}

/*
 * device registration specific to PXA27x.
 */

static struct resource i2c_power_resources[] = {
	{
		.start	= 0x40f00180,
		.end	= 0x40f001a3,
		.flags	= IORESOURCE_MEM,
	}, {
		.start	= IRQ_PWRI2C,
		.end	= IRQ_PWRI2C,
		.flags	= IORESOURCE_IRQ,
	},
};

struct platform_device pxa27x_device_i2c_power = {
	.name		= "pxa2xx-i2c",
	.id		= 1,
	.resource	= i2c_power_resources,
	.num_resources	= ARRAY_SIZE(i2c_power_resources),
};

void __init pxa_set_i2c_power_info(struct i2c_pxa_platform_data *info)
{
	local_irq_disable();
	PCFR |= PCFR_PI2CEN;
	local_irq_enable();
	pxa27x_device_i2c_power.dev.platform_data = info;
}

static struct platform_device *devices[] __initdata = {
/*	&pxa_device_udc,	The UDC driver is PXA25x only */
	&pxa_device_ffuart,
	&pxa_device_btuart,
	&pxa_device_stuart,
	&pxa_device_i2s,
	&pxa_device_rtc,
	&pxa27x_device_i2c_power,
	&pxa27x_device_ssp1,
	&pxa27x_device_ssp2,
	&pxa27x_device_ssp3,
};

static struct sys_device pxa27x_sysdev[] = {
	{
		.cls	= &pxa_irq_sysclass,
	}, {
		.cls	= &pxa_gpio_sysclass,
	},
};

static int __init pxa27x_init(void)
{
	int i, ret = 0;

	if (cpu_is_pxa27x()) {
		clks_register(pxa27x_clks, ARRAY_SIZE(pxa27x_clks));

		if ((ret = pxa_init_dma(32)))
			return ret;

		pxa27x_init_pm();

		for (i = 0; i < ARRAY_SIZE(pxa27x_sysdev); i++) {
			ret = sysdev_register(&pxa27x_sysdev[i]);
			if (ret)
				pr_err("failed to register sysdev[%d]\n", i);
		}

		ret = platform_add_devices(devices, ARRAY_SIZE(devices));
	}

	return ret;
}

postcore_initcall(pxa27x_init);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/arch/arm/mach-pxa/pxa27x.c
	3	*
	4	* Author: Nicolas Pitre
	5	* Created: Nov 05, 2002
	6	* Copyright: MontaVista Software Inc.
	7	*
	8	* Code specific to PXA27x aka Bulverde.
	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	*/
1da177e4 LT	14	#include <linux/module.h>
	15	#include <linux/kernel.h>
	16	#include <linux/init.h>
95d9ffbe	17	#include <linux/suspend.h>
d052d1be	18	#include <linux/platform_device.h>
c0165504	19	#include <linux/sysdev.h>
1da177e4 LT	20
	21	#include <asm/hardware.h>
	22	#include <asm/irq.h>
cd49104d	23	#include <asm/arch/irqs.h>
1da177e4	24	#include <asm/arch/pxa-regs.h>
8785a8fb	25	#include <asm/arch/pxa2xx-regs.h>
c0a596d6	26	#include <asm/arch/mfp-pxa27x.h>
81f280e2	27	#include <asm/arch/ohci.h>
e176bb05	28	#include <asm/arch/pm.h>
f53f066c	29	#include <asm/arch/dma.h>
b7a36701	30	#include <asm/arch/i2c.h>
1da177e4 LT	31
1da177e4 LT	32	#include "generic.h"
46c41e62	33	#include "devices.h"
a6dba20c	34	#include "clock.h"
1da177e4 LT	35
	36	/* Crystal clock: 13MHz */
	37	#define BASE_CLK 13000000
	38
	39	/*
	40	* Get the clock frequency as reflected by CCSR and the turbo flag.
	41	* We assume these values have been applied via a fcs.
	42	* If info is not 0 we also display the current settings.
	43	*/
15a40333	44	unsigned int pxa27x_get_clk_frequency_khz(int info)
1da177e4 LT	45	{
	46	unsigned long ccsr, clkcfg;
	47	unsigned int l, L, m, M, n2, N, S;
	48	int cccr_a, t, ht, b;
	49
	50	ccsr = CCSR;
	51	cccr_a = CCCR & (1 << 25);
	52
	53	/* Read clkcfg register: it has turbo, b, half-turbo (and f) */
	54	asm( "mrc\tp14, 0, %0, c6, c0, 0" : "=r" (clkcfg) );
afe5df20	55	t = clkcfg & (1 << 0);
1da177e4 LT	56	ht = clkcfg & (1 << 2);
	57	b = clkcfg & (1 << 3);
	58
	59	l = ccsr & 0x1f;
	60	n2 = (ccsr>>7) & 0xf;
	61	m = (l <= 10) ? 1 : (l <= 20) ? 2 : 4;
	62
	63	L = l * BASE_CLK;
	64	N = (L * n2) / 2;
	65	M = (!cccr_a) ? (L/m) : ((b) ? L : (L/2));
	66	S = (b) ? L : (L/2);
	67
	68	if (info) {
	69	printk( KERN_INFO "Run Mode clock: %d.%02dMHz (*%d)\n",
	70	L / 1000000, (L % 1000000) / 10000, l );
	71	printk( KERN_INFO "Turbo Mode clock: %d.%02dMHz (*%d.%d, %sactive)\n",
	72	N / 1000000, (N % 1000000)/10000, n2 / 2, (n2 % 2)*5,
	73	(t) ? "" : "in" );
	74	printk( KERN_INFO "Memory clock: %d.%02dMHz (/%d)\n",
	75	M / 1000000, (M % 1000000) / 10000, m );
	76	printk( KERN_INFO "System bus clock: %d.%02dMHz \n",
	77	S / 1000000, (S % 1000000) / 10000 );
	78	}
	79
	80	return (t) ? (N/1000) : (L/1000);
	81	}
	82
	83	/*
	84	* Return the current mem clock frequency in units of 10kHz as
	85	* reflected by CCCR[A], B, and L
	86	*/
15a40333	87	unsigned int pxa27x_get_memclk_frequency_10khz(void)
1da177e4 LT	88	{
	89	unsigned long ccsr, clkcfg;
	90	unsigned int l, L, m, M;
	91	int cccr_a, b;
	92
	93	ccsr = CCSR;
	94	cccr_a = CCCR & (1 << 25);
	95
	96	/* Read clkcfg register: it has turbo, b, half-turbo (and f) */
	97	asm( "mrc\tp14, 0, %0, c6, c0, 0" : "=r" (clkcfg) );
	98	b = clkcfg & (1 << 3);
	99
	100	l = ccsr & 0x1f;
	101	m = (l <= 10) ? 1 : (l <= 20) ? 2 : 4;
	102
	103	L = l * BASE_CLK;
	104	M = (!cccr_a) ? (L/m) : ((b) ? L : (L/2));
	105
	106	return (M / 10000);
	107	}
	108
	109	/*
	110	* Return the current LCD clock frequency in units of 10kHz as
	111	*/
a88a447d	112	static unsigned int pxa27x_get_lcdclk_frequency_10khz(void)
1da177e4 LT	113	{
	114	unsigned long ccsr;
	115	unsigned int l, L, k, K;
	116
	117	ccsr = CCSR;
	118
	119	l = ccsr & 0x1f;
	120	k = (l <= 7) ? 1 : (l <= 16) ? 2 : 4;
	121
	122	L = l * BASE_CLK;
	123	K = L / k;
	124
	125	return (K / 10000);
	126	}
	127
a6dba20c RK	128	static unsigned long clk_pxa27x_lcd_getrate(struct clk *clk)
	129	{
	130	return pxa27x_get_lcdclk_frequency_10khz() * 10000;
	131	}
	132
	133	static const struct clkops clk_pxa27x_lcd_ops = {
	134	.enable = clk_cken_enable,
	135	.disable = clk_cken_disable,
	136	.getrate = clk_pxa27x_lcd_getrate,
	137	};
	138
	139	static struct clk pxa27x_clks[] = {
	140	INIT_CK("LCDCLK", LCD, &clk_pxa27x_lcd_ops, &pxa_device_fb.dev),
	141	INIT_CK("CAMCLK", CAMERA, &clk_pxa27x_lcd_ops, NULL),
	142
a6dba20c RK	143	INIT_CKEN("UARTCLK", FFUART, 14857000, 1, &pxa_device_ffuart.dev),
a6dba20c RK	144	INIT_CKEN("UARTCLK", BTUART, 14857000, 1, &pxa_device_btuart.dev),
435b6e94	145	INIT_CKEN("UARTCLK", STUART, 14857000, 1, NULL),
a6dba20c RK	146
	147	INIT_CKEN("I2SCLK", I2S, 14682000, 0, &pxa_device_i2s.dev),
	148	INIT_CKEN("I2CCLK", I2C, 32842000, 0, &pxa_device_i2c.dev),
	149	INIT_CKEN("UDCCLK", USB, 48000000, 5, &pxa_device_udc.dev),
	150	INIT_CKEN("MMCCLK", MMC, 19500000, 0, &pxa_device_mci.dev),
	151	INIT_CKEN("FICPCLK", FICP, 48000000, 0, &pxa_device_ficp.dev),
	152
8854cb49	153	INIT_CKEN("USBCLK", USBHOST, 48000000, 0, &pxa27x_device_ohci.dev),
a6dba20c	154	INIT_CKEN("I2CCLK", PWRI2C, 13000000, 0, &pxa27x_device_i2c_power.dev),
37320980	155	INIT_CKEN("KBDCLK", KEYPAD, 32768, 0, &pxa27x_device_keypad.dev),
a6dba20c	156
d8e0db11	157	INIT_CKEN("SSPCLK", SSP1, 13000000, 0, &pxa27x_device_ssp1.dev),
	158	INIT_CKEN("SSPCLK", SSP2, 13000000, 0, &pxa27x_device_ssp2.dev),
	159	INIT_CKEN("SSPCLK", SSP3, 13000000, 0, &pxa27x_device_ssp3.dev),
	160
27b98a67 MB	161	INIT_CKEN("AC97CLK", AC97, 24576000, 0, NULL),
	162	INIT_CKEN("AC97CONFCLK", AC97CONF, 24576000, 0, NULL),
	163
a6dba20c RK	164	/*
a6dba20c RK	165	INIT_CKEN("PWMCLK", PWM0, 13000000, 0, NULL),
a6dba20c RK	166	INIT_CKEN("MSLCLK", MSL, 48000000, 0, NULL),
	167	INIT_CKEN("USIMCLK", USIM, 48000000, 0, NULL),
	168	INIT_CKEN("MSTKCLK", MEMSTK, 19500000, 0, NULL),
	169	INIT_CKEN("IMCLK", IM, 0, 0, NULL),
	170	INIT_CKEN("MEMCLK", MEMC, 0, 0, NULL),
	171	*/
	172	};
	173
a8fa3f0c NP	174	#ifdef CONFIG_PM
a8fa3f0c NP	175
711be5cc EM	176	#define SAVE(x) sleep_save[SLEEP_SAVE_##x] = x
	177	#define RESTORE(x) x = sleep_save[SLEEP_SAVE_##x]
	178
711be5cc EM	179	/*
	180	* List of global PXA peripheral registers to preserve.
	181	* More ones like CP and general purpose register values are preserved
	182	* with the stack pointer in sleep.S.
	183	*/
649de51b	184	enum { SLEEP_SAVE_PGSR0, SLEEP_SAVE_PGSR1, SLEEP_SAVE_PGSR2, SLEEP_SAVE_PGSR3,
711be5cc EM	185
	186	SLEEP_SAVE_GAFR0_L, SLEEP_SAVE_GAFR0_U,
	187	SLEEP_SAVE_GAFR1_L, SLEEP_SAVE_GAFR1_U,
	188	SLEEP_SAVE_GAFR2_L, SLEEP_SAVE_GAFR2_U,
	189	SLEEP_SAVE_GAFR3_L, SLEEP_SAVE_GAFR3_U,
	190
	191	SLEEP_SAVE_PSTR,
	192
711be5cc EM	193	SLEEP_SAVE_CKEN,
	194
	195	SLEEP_SAVE_MDREFR,
	196	SLEEP_SAVE_PWER, SLEEP_SAVE_PCFR, SLEEP_SAVE_PRER,
	197	SLEEP_SAVE_PFER, SLEEP_SAVE_PKWR,
	198
649de51b	199	SLEEP_SAVE_COUNT
711be5cc EM	200	};
	201
	202	void pxa27x_cpu_pm_save(unsigned long *sleep_save)
	203	{
711be5cc EM	204	SAVE(PGSR0); SAVE(PGSR1); SAVE(PGSR2); SAVE(PGSR3);
	205
	206	SAVE(GAFR0_L); SAVE(GAFR0_U);
	207	SAVE(GAFR1_L); SAVE(GAFR1_U);
	208	SAVE(GAFR2_L); SAVE(GAFR2_U);
	209	SAVE(GAFR3_L); SAVE(GAFR3_U);
	210
	211	SAVE(MDREFR);
	212	SAVE(PWER); SAVE(PCFR); SAVE(PRER);
	213	SAVE(PFER); SAVE(PKWR);
	214
711be5cc EM	215	SAVE(CKEN);
711be5cc EM	216	SAVE(PSTR);
711be5cc EM	217	}
	218
	219	void pxa27x_cpu_pm_restore(unsigned long *sleep_save)
	220	{
	221	/* ensure not to come back here if it wasn't intended */
	222	PSPR = 0;
	223
	224	/* restore registers */
711be5cc EM	225	RESTORE(GAFR0_L); RESTORE(GAFR0_U);
	226	RESTORE(GAFR1_L); RESTORE(GAFR1_U);
	227	RESTORE(GAFR2_L); RESTORE(GAFR2_U);
	228	RESTORE(GAFR3_L); RESTORE(GAFR3_U);
711be5cc EM	229	RESTORE(PGSR0); RESTORE(PGSR1); RESTORE(PGSR2); RESTORE(PGSR3);
	230
	231	RESTORE(MDREFR);
	232	RESTORE(PWER); RESTORE(PCFR); RESTORE(PRER);
	233	RESTORE(PFER); RESTORE(PKWR);
	234
	235	PSSR = PSSR_RDH \| PSSR_PH;
	236
	237	RESTORE(CKEN);
	238
711be5cc EM	239	RESTORE(PSTR);
	240	}
	241
	242	void pxa27x_cpu_pm_enter(suspend_state_t state)
8775420d TP	243	{
8775420d TP	244	extern void pxa_cpu_standby(void);
8775420d	245
8775420d TP	246	/* ensure voltage-change sequencer not initiated, which hangs */
	247	PCFR &= ~PCFR_FVC;
	248
	249	/* Clear edge-detect status register. */
	250	PEDR = 0xDF12FE1B;
	251
dc38e2ad RK	252	/* Clear reset status */
	253	RCSR = RCSR_HWR \| RCSR_WDR \| RCSR_SMR \| RCSR_GPR;
	254
8775420d	255	switch (state) {
26705ca4 TP	256	case PM_SUSPEND_STANDBY:
	257	pxa_cpu_standby();
	258	break;
8775420d TP	259	case PM_SUSPEND_MEM:
	260	/* set resume return address */
	261	PSPR = virt_to_phys(pxa_cpu_resume);
b750a093	262	pxa27x_cpu_suspend(PWRMODE_SLEEP);
8775420d TP	263	break;
	264	}
	265	}
1da177e4	266
711be5cc	267	static int pxa27x_cpu_pm_valid(suspend_state_t state)
88dfe98c RK	268	{
	269	return state == PM_SUSPEND_MEM \|\| state == PM_SUSPEND_STANDBY;
	270	}
	271
711be5cc	272	static struct pxa_cpu_pm_fns pxa27x_cpu_pm_fns = {
649de51b	273	.save_count = SLEEP_SAVE_COUNT,
711be5cc EM	274	.save = pxa27x_cpu_pm_save,
	275	.restore = pxa27x_cpu_pm_restore,
	276	.valid = pxa27x_cpu_pm_valid,
	277	.enter = pxa27x_cpu_pm_enter,
e176bb05	278	};
711be5cc EM	279
	280	static void __init pxa27x_init_pm(void)
	281	{
	282	pxa_cpu_pm_fns = &pxa27x_cpu_pm_fns;
	283	}
f79299ca	284	#else
f79299ca	285	static inline void pxa27x_init_pm(void) {}
a8fa3f0c NP	286	#endif
a8fa3f0c NP	287
c95530c7	288	/* PXA27x: Various gpios can issue wakeup events. This logic only
	289	* handles the simple cases, not the WEMUX2 and WEMUX3 options
	290	*/
c95530c7	291	static int pxa27x_set_wake(unsigned int irq, unsigned int on)
	292	{
	293	int gpio = IRQ_TO_GPIO(irq);
	294	uint32_t mask;
	295
c0a596d6	296	if (gpio >= 0 && gpio < 128)
c0a596d6	297	return gpio_set_wake(gpio, on);
c95530c7	298
c0a596d6	299	if (irq == IRQ_KEYPAD)
c0a596d6	300	return keypad_set_wake(on);
c95530c7	301
	302	switch (irq) {
	303	case IRQ_RTCAlrm:
	304	mask = PWER_RTC;
	305	break;
	306	case IRQ_USB:
	307	mask = 1u << 26;
	308	break;
	309	default:
	310	return -EINVAL;
	311	}
	312
c95530c7	313	if (on)
	314	PWER \|= mask;
	315	else
	316	PWER &=~mask;
	317
	318	return 0;
	319	}
	320
	321	void __init pxa27x_init_irq(void)
	322	{
b9e25ace	323	pxa_init_irq(34, pxa27x_set_wake);
b9e25ace	324	pxa_init_gpio(128, pxa27x_set_wake);
c95530c7	325	}
c95530c7	326
1da177e4 LT	327	/*
	328	* device registration specific to PXA27x.
	329	*/
	330
34f3231f RK	331	static struct resource i2c_power_resources[] = {
	332	{
	333	.start = 0x40f00180,
	334	.end = 0x40f001a3,
	335	.flags = IORESOURCE_MEM,
	336	}, {
	337	.start = IRQ_PWRI2C,
	338	.end = IRQ_PWRI2C,
	339	.flags = IORESOURCE_IRQ,
	340	},
	341	};
	342
00dc4f94	343	struct platform_device pxa27x_device_i2c_power = {
34f3231f RK	344	.name = "pxa2xx-i2c",
	345	.id = 1,
	346	.resource = i2c_power_resources,
	347	.num_resources = ARRAY_SIZE(i2c_power_resources),
	348	};
	349
b7a36701 MR	350	void __init pxa_set_i2c_power_info(struct i2c_pxa_platform_data *info)
b7a36701 MR	351	{
bc3a5959 PZ	352	local_irq_disable();
	353	PCFR \|= PCFR_PI2CEN;
	354	local_irq_enable();
b7a36701 MR	355	pxa27x_device_i2c_power.dev.platform_data = info;
	356	}
	357
1da177e4	358	static struct platform_device *devices[] __initdata = {
284d115e	359	/* &pxa_device_udc, The UDC driver is PXA25x only */
e09d02e1 EM	360	&pxa_device_ffuart,
	361	&pxa_device_btuart,
	362	&pxa_device_stuart,
e09d02e1	363	&pxa_device_i2s,
e09d02e1 EM	364	&pxa_device_rtc,
e09d02e1 EM	365	&pxa27x_device_i2c_power,
d8e0db11	366	&pxa27x_device_ssp1,
	367	&pxa27x_device_ssp2,
	368	&pxa27x_device_ssp3,
1da177e4 LT	369	};
1da177e4 LT	370
c0165504	371	static struct sys_device pxa27x_sysdev[] = {
c0165504	372	{
c0165504	373	.cls = &pxa_irq_sysclass,
16dfdbf0	374	}, {
16dfdbf0	375	.cls = &pxa_gpio_sysclass,
c0165504	376	},
	377	};
	378
1da177e4 LT	379	static int __init pxa27x_init(void)
1da177e4 LT	380	{
c0165504	381	int i, ret = 0;
c0165504	382
e176bb05	383	if (cpu_is_pxa27x()) {
a6dba20c RK	384	clks_register(pxa27x_clks, ARRAY_SIZE(pxa27x_clks));
a6dba20c RK	385
f53f066c EM	386	if ((ret = pxa_init_dma(32)))
f53f066c EM	387	return ret;
f79299ca	388
711be5cc	389	pxa27x_init_pm();
f79299ca	390
c0165504	391	for (i = 0; i < ARRAY_SIZE(pxa27x_sysdev); i++) {
	392	ret = sysdev_register(&pxa27x_sysdev[i]);
	393	if (ret)
	394	pr_err("failed to register sysdev[%d]\n", i);
	395	}
	396
e176bb05 RK	397	ret = platform_add_devices(devices, ARRAY_SIZE(devices));
e176bb05 RK	398	}
c0165504	399
e176bb05	400	return ret;
1da177e4 LT	401	}
1da177e4 LT	402
1c104e0e	403	postcore_initcall(pxa27x_init);